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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_config.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2012 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains the external function pcre_config(). */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* Keep the original link size. */
static int real_link_size = LINK_SIZE;
#include "pcre_internal.h"
/*************************************************
* Return info about what features are configured *
*************************************************/
/* This function has an extensible interface so that additional items can be
added compatibly.
Arguments:
what what information is required
where where to put the information
Returns: 0 if data returned, negative on error
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_config(int what, void *where)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_config(int what, void *where)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_config(int what, void *where)
#endif
{
switch (what)
{
case PCRE_CONFIG_UTF8:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
*((int *)where) = 0;
return PCRE_ERROR_BADOPTION;
#else
#if defined SUPPORT_UTF
*((int *)where) = 1;
#else
*((int *)where) = 0;
#endif
break;
#endif
case PCRE_CONFIG_UTF16:
#if defined COMPILE_PCRE8 || defined COMPILE_PCRE32
*((int *)where) = 0;
return PCRE_ERROR_BADOPTION;
#else
#if defined SUPPORT_UTF
*((int *)where) = 1;
#else
*((int *)where) = 0;
#endif
break;
#endif
case PCRE_CONFIG_UTF32:
#if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
*((int *)where) = 0;
return PCRE_ERROR_BADOPTION;
#else
#if defined SUPPORT_UTF
*((int *)where) = 1;
#else
*((int *)where) = 0;
#endif
break;
#endif
case PCRE_CONFIG_UNICODE_PROPERTIES:
#ifdef SUPPORT_UCP
*((int *)where) = 1;
#else
*((int *)where) = 0;
#endif
break;
case PCRE_CONFIG_JIT:
#ifdef SUPPORT_JIT
*((int *)where) = 1;
#else
*((int *)where) = 0;
#endif
break;
case PCRE_CONFIG_JITTARGET:
#ifdef SUPPORT_JIT
*((const char **)where) = PRIV(jit_get_target)();
#else
*((const char **)where) = NULL;
#endif
break;
case PCRE_CONFIG_NEWLINE:
*((int *)where) = NEWLINE;
break;
case PCRE_CONFIG_BSR:
#ifdef BSR_ANYCRLF
*((int *)where) = 1;
#else
*((int *)where) = 0;
#endif
break;
case PCRE_CONFIG_LINK_SIZE:
*((int *)where) = real_link_size;
break;
case PCRE_CONFIG_POSIX_MALLOC_THRESHOLD:
*((int *)where) = POSIX_MALLOC_THRESHOLD;
break;
case PCRE_CONFIG_PARENS_LIMIT:
*((unsigned long int *)where) = PARENS_NEST_LIMIT;
break;
case PCRE_CONFIG_MATCH_LIMIT:
*((unsigned long int *)where) = MATCH_LIMIT;
break;
case PCRE_CONFIG_MATCH_LIMIT_RECURSION:
*((unsigned long int *)where) = MATCH_LIMIT_RECURSION;
break;
case PCRE_CONFIG_STACKRECURSE:
#ifdef NO_RECURSE
*((int *)where) = 0;
#else
*((int *)where) = 1;
#endif
break;
default: return PCRE_ERROR_BADOPTION;
}
return 0;
}
/* End of pcre_config.c */
|
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_maketables.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2012 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains the external function pcre_maketables(), which builds
character tables for PCRE in the current locale. The file is compiled on its
own as part of the PCRE library. However, it is also included in the
compilation of dftables.c, in which case the macro DFTABLES is defined. */
#ifndef DFTABLES
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# include "pcre_internal.h"
#endif
/*************************************************
* Create PCRE character tables *
*************************************************/
/* This function builds a set of character tables for use by PCRE and returns
a pointer to them. They are build using the ctype functions, and consequently
their contents will depend upon the current locale setting. When compiled as
part of the library, the store is obtained via PUBL(malloc)(), but when
compiled inside dftables, use malloc().
Arguments: none
Returns: pointer to the contiguous block of data
*/
#if defined COMPILE_PCRE8
const unsigned char *
pcre_maketables(void)
#elif defined COMPILE_PCRE16
const unsigned char *
pcre16_maketables(void)
#elif defined COMPILE_PCRE32
const unsigned char *
pcre32_maketables(void)
#endif
{
unsigned char *yield, *p;
int i;
#ifndef DFTABLES
yield = (unsigned char*)(PUBL(malloc))(tables_length);
#else
yield = (unsigned char*)malloc(tables_length);
#endif
if (yield == NULL) return NULL;
p = yield;
/* First comes the lower casing table */
for (i = 0; i < 256; i++) *p++ = tolower(i);
/* Next the case-flipping table */
for (i = 0; i < 256; i++) *p++ = islower(i)? toupper(i) : tolower(i);
/* Then the character class tables. Don't try to be clever and save effort on
exclusive ones - in some locales things may be different.
Note that the table for "space" includes everything "isspace" gives, including
VT in the default locale. This makes it work for the POSIX class [:space:].
From release 8.34 is is also correct for Perl space, because Perl added VT at
release 5.18.
Note also that it is possible for a character to be alnum or alpha without
being lower or upper, such as "male and female ordinals" (\xAA and \xBA) in the
fr_FR locale (at least under Debian Linux's locales as of 12/2005). So we must
test for alnum specially. */
memset(p, 0, cbit_length);
for (i = 0; i < 256; i++)
{
if (isdigit(i)) p[cbit_digit + i/8] |= 1 << (i&7);
if (isupper(i)) p[cbit_upper + i/8] |= 1 << (i&7);
if (islower(i)) p[cbit_lower + i/8] |= 1 << (i&7);
if (isalnum(i)) p[cbit_word + i/8] |= 1 << (i&7);
if (i == '_') p[cbit_word + i/8] |= 1 << (i&7);
if (isspace(i)) p[cbit_space + i/8] |= 1 << (i&7);
if (isxdigit(i))p[cbit_xdigit + i/8] |= 1 << (i&7);
if (isgraph(i)) p[cbit_graph + i/8] |= 1 << (i&7);
if (isprint(i)) p[cbit_print + i/8] |= 1 << (i&7);
if (ispunct(i)) p[cbit_punct + i/8] |= 1 << (i&7);
if (iscntrl(i)) p[cbit_cntrl + i/8] |= 1 << (i&7);
}
p += cbit_length;
/* Finally, the character type table. In this, we used to exclude VT from the
white space chars, because Perl didn't recognize it as such for \s and for
comments within regexes. However, Perl changed at release 5.18, so PCRE changed
at release 8.34. */
for (i = 0; i < 256; i++)
{
int x = 0;
if (isspace(i)) x += ctype_space;
if (isalpha(i)) x += ctype_letter;
if (isdigit(i)) x += ctype_digit;
if (isxdigit(i)) x += ctype_xdigit;
if (isalnum(i) || i == '_') x += ctype_word;
/* Note: strchr includes the terminating zero in the characters it considers.
In this instance, that is ok because we want binary zero to be flagged as a
meta-character, which in this sense is any character that terminates a run
of data characters. */
if (strchr("\\*+?{^.$|()[", i) != 0) x += ctype_meta;
*p++ = x;
}
return yield;
}
/* End of pcre_maketables.c */
|
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_fullinfo.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2013 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains the external function pcre_fullinfo(), which returns
information about a compiled pattern. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
/*************************************************
* Return info about compiled pattern *
*************************************************/
/* This is a newer "info" function which has an extensible interface so
that additional items can be added compatibly.
Arguments:
argument_re points to compiled code
extra_data points extra data, or NULL
what what information is required
where where to put the information
Returns: 0 if data returned, negative on error
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_fullinfo(const pcre *argument_re, const pcre_extra *extra_data,
int what, void *where)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_fullinfo(const pcre16 *argument_re, const pcre16_extra *extra_data,
int what, void *where)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_fullinfo(const pcre32 *argument_re, const pcre32_extra *extra_data,
int what, void *where)
#endif
{
const REAL_PCRE *re = (const REAL_PCRE *)argument_re;
const pcre_study_data *study = NULL;
if (re == NULL || where == NULL) return PCRE_ERROR_NULL;
if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_STUDY_DATA) != 0)
study = (const pcre_study_data *)extra_data->study_data;
/* Check that the first field in the block is the magic number. If it is not,
return with PCRE_ERROR_BADMAGIC. However, if the magic number is equal to
REVERSED_MAGIC_NUMBER we return with PCRE_ERROR_BADENDIANNESS, which
means that the pattern is likely compiled with different endianness. */
if (re->magic_number != MAGIC_NUMBER)
return re->magic_number == REVERSED_MAGIC_NUMBER?
PCRE_ERROR_BADENDIANNESS:PCRE_ERROR_BADMAGIC;
/* Check that this pattern was compiled in the correct bit mode */
if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
switch (what)
{
case PCRE_INFO_OPTIONS:
*((unsigned long int *)where) = re->options & PUBLIC_COMPILE_OPTIONS;
break;
case PCRE_INFO_SIZE:
*((size_t *)where) = re->size;
break;
case PCRE_INFO_STUDYSIZE:
*((size_t *)where) = (study == NULL)? 0 : study->size;
break;
case PCRE_INFO_JITSIZE:
#ifdef SUPPORT_JIT
*((size_t *)where) =
(extra_data != NULL &&
(extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
extra_data->executable_jit != NULL)?
PRIV(jit_get_size)(extra_data->executable_jit) : 0;
#else
*((size_t *)where) = 0;
#endif
break;
case PCRE_INFO_CAPTURECOUNT:
*((int *)where) = re->top_bracket;
break;
case PCRE_INFO_BACKREFMAX:
*((int *)where) = re->top_backref;
break;
case PCRE_INFO_FIRSTBYTE:
*((int *)where) =
((re->flags & PCRE_FIRSTSET) != 0)? (int)re->first_char :
((re->flags & PCRE_STARTLINE) != 0)? -1 : -2;
break;
case PCRE_INFO_FIRSTCHARACTER:
*((pcre_uint32 *)where) =
(re->flags & PCRE_FIRSTSET) != 0 ? re->first_char : 0;
break;
case PCRE_INFO_FIRSTCHARACTERFLAGS:
*((int *)where) =
((re->flags & PCRE_FIRSTSET) != 0) ? 1 :
((re->flags & PCRE_STARTLINE) != 0) ? 2 : 0;
break;
/* Make sure we pass back the pointer to the bit vector in the external
block, not the internal copy (with flipped integer fields). */
case PCRE_INFO_FIRSTTABLE:
*((const pcre_uint8 **)where) =
(study != NULL && (study->flags & PCRE_STUDY_MAPPED) != 0)?
((const pcre_study_data *)extra_data->study_data)->start_bits : NULL;
break;
case PCRE_INFO_MINLENGTH:
*((int *)where) =
(study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0)?
(int)(study->minlength) : -1;
break;
case PCRE_INFO_JIT:
*((int *)where) = extra_data != NULL &&
(extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
extra_data->executable_jit != NULL;
break;
case PCRE_INFO_LASTLITERAL:
*((int *)where) =
((re->flags & PCRE_REQCHSET) != 0)? (int)re->req_char : -1;
break;
case PCRE_INFO_REQUIREDCHAR:
*((pcre_uint32 *)where) =
((re->flags & PCRE_REQCHSET) != 0) ? re->req_char : 0;
break;
case PCRE_INFO_REQUIREDCHARFLAGS:
*((int *)where) =
((re->flags & PCRE_REQCHSET) != 0);
break;
case PCRE_INFO_NAMEENTRYSIZE:
*((int *)where) = re->name_entry_size;
break;
case PCRE_INFO_NAMECOUNT:
*((int *)where) = re->name_count;
break;
case PCRE_INFO_NAMETABLE:
*((const pcre_uchar **)where) = (const pcre_uchar *)re + re->name_table_offset;
break;
case PCRE_INFO_DEFAULT_TABLES:
*((const pcre_uint8 **)where) = (const pcre_uint8 *)(PRIV(default_tables));
break;
/* From release 8.00 this will always return TRUE because NOPARTIAL is
no longer ever set (the restrictions have been removed). */
case PCRE_INFO_OKPARTIAL:
*((int *)where) = (re->flags & PCRE_NOPARTIAL) == 0;
break;
case PCRE_INFO_JCHANGED:
*((int *)where) = (re->flags & PCRE_JCHANGED) != 0;
break;
case PCRE_INFO_HASCRORLF:
*((int *)where) = (re->flags & PCRE_HASCRORLF) != 0;
break;
case PCRE_INFO_MAXLOOKBEHIND:
*((int *)where) = re->max_lookbehind;
break;
case PCRE_INFO_MATCHLIMIT:
if ((re->flags & PCRE_MLSET) == 0) return PCRE_ERROR_UNSET;
*((pcre_uint32 *)where) = re->limit_match;
break;
case PCRE_INFO_RECURSIONLIMIT:
if ((re->flags & PCRE_RLSET) == 0) return PCRE_ERROR_UNSET;
*((pcre_uint32 *)where) = re->limit_recursion;
break;
case PCRE_INFO_MATCH_EMPTY:
*((int *)where) = (re->flags & PCRE_MATCH_EMPTY) != 0;
break;
default: return PCRE_ERROR_BADOPTION;
}
return 0;
}
/* End of pcre_fullinfo.c */
|
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_globals.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2014 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains global variables that are exported by the PCRE library.
PCRE is thread-clean and doesn't use any global variables in the normal sense.
However, it calls memory allocation and freeing functions via the four
indirections below, and it can optionally do callouts, using the fifth
indirection. These values can be changed by the caller, but are shared between
all threads.
For MS Visual Studio and Symbian OS, there are problems in initializing these
variables to non-local functions. In these cases, therefore, an indirection via
a local function is used.
Also, when compiling for Virtual Pascal, things are done differently, and
global variables are not used. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
#if defined _MSC_VER || defined __SYMBIAN32__
static void* LocalPcreMalloc(size_t aSize)
{
return malloc(aSize);
}
static void LocalPcreFree(void* aPtr)
{
free(aPtr);
}
PCRE_EXP_DATA_DEFN void *(*PUBL(malloc))(size_t) = LocalPcreMalloc;
PCRE_EXP_DATA_DEFN void (*PUBL(free))(void *) = LocalPcreFree;
PCRE_EXP_DATA_DEFN void *(*PUBL(stack_malloc))(size_t) = LocalPcreMalloc;
PCRE_EXP_DATA_DEFN void (*PUBL(stack_free))(void *) = LocalPcreFree;
PCRE_EXP_DATA_DEFN int (*PUBL(callout))(PUBL(callout_block) *) = NULL;
PCRE_EXP_DATA_DEFN int (*PUBL(stack_guard))(void) = NULL;
#elif !defined VPCOMPAT
PCRE_EXP_DATA_DEFN void *(*PUBL(malloc))(size_t) = malloc;
PCRE_EXP_DATA_DEFN void (*PUBL(free))(void *) = free;
PCRE_EXP_DATA_DEFN void *(*PUBL(stack_malloc))(size_t) = malloc;
PCRE_EXP_DATA_DEFN void (*PUBL(stack_free))(void *) = free;
PCRE_EXP_DATA_DEFN int (*PUBL(callout))(PUBL(callout_block) *) = NULL;
PCRE_EXP_DATA_DEFN int (*PUBL(stack_guard))(void) = NULL;
#endif
/* End of pcre_globals.c */
|
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_get.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2012 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains some convenience functions for extracting substrings
from the subject string after a regex match has succeeded. The original idea
for these functions came from Scott Wimer. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
/*************************************************
* Find number for named string *
*************************************************/
/* This function is used by the get_first_set() function below, as well
as being generally available. It assumes that names are unique.
Arguments:
code the compiled regex
stringname the name whose number is required
Returns: the number of the named parentheses, or a negative number
(PCRE_ERROR_NOSUBSTRING) if not found
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_get_stringnumber(const pcre *code, const char *stringname)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_get_stringnumber(const pcre16 *code, PCRE_SPTR16 stringname)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_get_stringnumber(const pcre32 *code, PCRE_SPTR32 stringname)
#endif
{
int rc;
int entrysize;
int top, bot;
pcre_uchar *nametable;
#ifdef COMPILE_PCRE8
if ((rc = pcre_fullinfo(code, NULL, PCRE_INFO_NAMECOUNT, &top)) != 0)
return rc;
if (top <= 0) return PCRE_ERROR_NOSUBSTRING;
if ((rc = pcre_fullinfo(code, NULL, PCRE_INFO_NAMEENTRYSIZE, &entrysize)) != 0)
return rc;
if ((rc = pcre_fullinfo(code, NULL, PCRE_INFO_NAMETABLE, &nametable)) != 0)
return rc;
#endif
#ifdef COMPILE_PCRE16
if ((rc = pcre16_fullinfo(code, NULL, PCRE_INFO_NAMECOUNT, &top)) != 0)
return rc;
if (top <= 0) return PCRE_ERROR_NOSUBSTRING;
if ((rc = pcre16_fullinfo(code, NULL, PCRE_INFO_NAMEENTRYSIZE, &entrysize)) != 0)
return rc;
if ((rc = pcre16_fullinfo(code, NULL, PCRE_INFO_NAMETABLE, &nametable)) != 0)
return rc;
#endif
#ifdef COMPILE_PCRE32
if ((rc = pcre32_fullinfo(code, NULL, PCRE_INFO_NAMECOUNT, &top)) != 0)
return rc;
if (top <= 0) return PCRE_ERROR_NOSUBSTRING;
if ((rc = pcre32_fullinfo(code, NULL, PCRE_INFO_NAMEENTRYSIZE, &entrysize)) != 0)
return rc;
if ((rc = pcre32_fullinfo(code, NULL, PCRE_INFO_NAMETABLE, &nametable)) != 0)
return rc;
#endif
bot = 0;
while (top > bot)
{
int mid = (top + bot) / 2;
pcre_uchar *entry = nametable + entrysize*mid;
int c = STRCMP_UC_UC((pcre_uchar *)stringname,
(pcre_uchar *)(entry + IMM2_SIZE));
if (c == 0) return GET2(entry, 0);
if (c > 0) bot = mid + 1; else top = mid;
}
return PCRE_ERROR_NOSUBSTRING;
}
/*************************************************
* Find (multiple) entries for named string *
*************************************************/
/* This is used by the get_first_set() function below, as well as being
generally available. It is used when duplicated names are permitted.
Arguments:
code the compiled regex
stringname the name whose entries required
firstptr where to put the pointer to the first entry
lastptr where to put the pointer to the last entry
Returns: the length of each entry, or a negative number
(PCRE_ERROR_NOSUBSTRING) if not found
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_get_stringtable_entries(const pcre *code, const char *stringname,
char **firstptr, char **lastptr)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_get_stringtable_entries(const pcre16 *code, PCRE_SPTR16 stringname,
PCRE_UCHAR16 **firstptr, PCRE_UCHAR16 **lastptr)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_get_stringtable_entries(const pcre32 *code, PCRE_SPTR32 stringname,
PCRE_UCHAR32 **firstptr, PCRE_UCHAR32 **lastptr)
#endif
{
int rc;
int entrysize;
int top, bot;
pcre_uchar *nametable, *lastentry;
#ifdef COMPILE_PCRE8
if ((rc = pcre_fullinfo(code, NULL, PCRE_INFO_NAMECOUNT, &top)) != 0)
return rc;
if (top <= 0) return PCRE_ERROR_NOSUBSTRING;
if ((rc = pcre_fullinfo(code, NULL, PCRE_INFO_NAMEENTRYSIZE, &entrysize)) != 0)
return rc;
if ((rc = pcre_fullinfo(code, NULL, PCRE_INFO_NAMETABLE, &nametable)) != 0)
return rc;
#endif
#ifdef COMPILE_PCRE16
if ((rc = pcre16_fullinfo(code, NULL, PCRE_INFO_NAMECOUNT, &top)) != 0)
return rc;
if (top <= 0) return PCRE_ERROR_NOSUBSTRING;
if ((rc = pcre16_fullinfo(code, NULL, PCRE_INFO_NAMEENTRYSIZE, &entrysize)) != 0)
return rc;
if ((rc = pcre16_fullinfo(code, NULL, PCRE_INFO_NAMETABLE, &nametable)) != 0)
return rc;
#endif
#ifdef COMPILE_PCRE32
if ((rc = pcre32_fullinfo(code, NULL, PCRE_INFO_NAMECOUNT, &top)) != 0)
return rc;
if (top <= 0) return PCRE_ERROR_NOSUBSTRING;
if ((rc = pcre32_fullinfo(code, NULL, PCRE_INFO_NAMEENTRYSIZE, &entrysize)) != 0)
return rc;
if ((rc = pcre32_fullinfo(code, NULL, PCRE_INFO_NAMETABLE, &nametable)) != 0)
return rc;
#endif
lastentry = nametable + entrysize * (top - 1);
bot = 0;
while (top > bot)
{
int mid = (top + bot) / 2;
pcre_uchar *entry = nametable + entrysize*mid;
int c = STRCMP_UC_UC((pcre_uchar *)stringname,
(pcre_uchar *)(entry + IMM2_SIZE));
if (c == 0)
{
pcre_uchar *first = entry;
pcre_uchar *last = entry;
while (first > nametable)
{
if (STRCMP_UC_UC((pcre_uchar *)stringname,
(pcre_uchar *)(first - entrysize + IMM2_SIZE)) != 0) break;
first -= entrysize;
}
while (last < lastentry)
{
if (STRCMP_UC_UC((pcre_uchar *)stringname,
(pcre_uchar *)(last + entrysize + IMM2_SIZE)) != 0) break;
last += entrysize;
}
#if defined COMPILE_PCRE8
*firstptr = (char *)first;
*lastptr = (char *)last;
#elif defined COMPILE_PCRE16
*firstptr = (PCRE_UCHAR16 *)first;
*lastptr = (PCRE_UCHAR16 *)last;
#elif defined COMPILE_PCRE32
*firstptr = (PCRE_UCHAR32 *)first;
*lastptr = (PCRE_UCHAR32 *)last;
#endif
return entrysize;
}
if (c > 0) bot = mid + 1; else top = mid;
}
return PCRE_ERROR_NOSUBSTRING;
}
/*************************************************
* Find first set of multiple named strings *
*************************************************/
/* This function allows for duplicate names in the table of named substrings.
It returns the number of the first one that was set in a pattern match.
Arguments:
code the compiled regex
stringname the name of the capturing substring
ovector the vector of matched substrings
stringcount number of captured substrings
Returns: the number of the first that is set,
or the number of the last one if none are set,
or a negative number on error
*/
#if defined COMPILE_PCRE8
static int
get_first_set(const pcre *code, const char *stringname, int *ovector,
int stringcount)
#elif defined COMPILE_PCRE16
static int
get_first_set(const pcre16 *code, PCRE_SPTR16 stringname, int *ovector,
int stringcount)
#elif defined COMPILE_PCRE32
static int
get_first_set(const pcre32 *code, PCRE_SPTR32 stringname, int *ovector,
int stringcount)
#endif
{
const REAL_PCRE *re = (const REAL_PCRE *)code;
int entrysize;
pcre_uchar *entry;
#if defined COMPILE_PCRE8
char *first, *last;
#elif defined COMPILE_PCRE16
PCRE_UCHAR16 *first, *last;
#elif defined COMPILE_PCRE32
PCRE_UCHAR32 *first, *last;
#endif
#if defined COMPILE_PCRE8
if ((re->options & PCRE_DUPNAMES) == 0 && (re->flags & PCRE_JCHANGED) == 0)
return pcre_get_stringnumber(code, stringname);
entrysize = pcre_get_stringtable_entries(code, stringname, &first, &last);
#elif defined COMPILE_PCRE16
if ((re->options & PCRE_DUPNAMES) == 0 && (re->flags & PCRE_JCHANGED) == 0)
return pcre16_get_stringnumber(code, stringname);
entrysize = pcre16_get_stringtable_entries(code, stringname, &first, &last);
#elif defined COMPILE_PCRE32
if ((re->options & PCRE_DUPNAMES) == 0 && (re->flags & PCRE_JCHANGED) == 0)
return pcre32_get_stringnumber(code, stringname);
entrysize = pcre32_get_stringtable_entries(code, stringname, &first, &last);
#endif
if (entrysize <= 0) return entrysize;
for (entry = (pcre_uchar *)first; entry <= (pcre_uchar *)last; entry += entrysize)
{
int n = GET2(entry, 0);
if (n < stringcount && ovector[n*2] >= 0) return n;
}
return GET2(entry, 0);
}
/*************************************************
* Copy captured string to given buffer *
*************************************************/
/* This function copies a single captured substring into a given buffer.
Note that we use memcpy() rather than strncpy() in case there are binary zeros
in the string.
Arguments:
subject the subject string that was matched
ovector pointer to the offsets table
stringcount the number of substrings that were captured
(i.e. the yield of the pcre_exec call, unless
that was zero, in which case it should be 1/3
of the offset table size)
stringnumber the number of the required substring
buffer where to put the substring
size the size of the buffer
Returns: if successful:
the length of the copied string, not including the zero
that is put on the end; can be zero
if not successful:
PCRE_ERROR_NOMEMORY (-6) buffer too small
PCRE_ERROR_NOSUBSTRING (-7) no such captured substring
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_copy_substring(const char *subject, int *ovector, int stringcount,
int stringnumber, char *buffer, int size)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_copy_substring(PCRE_SPTR16 subject, int *ovector, int stringcount,
int stringnumber, PCRE_UCHAR16 *buffer, int size)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_copy_substring(PCRE_SPTR32 subject, int *ovector, int stringcount,
int stringnumber, PCRE_UCHAR32 *buffer, int size)
#endif
{
int yield;
if (stringnumber < 0 || stringnumber >= stringcount)
return PCRE_ERROR_NOSUBSTRING;
stringnumber *= 2;
yield = ovector[stringnumber+1] - ovector[stringnumber];
if (size < yield + 1) return PCRE_ERROR_NOMEMORY;
memcpy(buffer, subject + ovector[stringnumber], IN_UCHARS(yield));
buffer[yield] = 0;
return yield;
}
/*************************************************
* Copy named captured string to given buffer *
*************************************************/
/* This function copies a single captured substring into a given buffer,
identifying it by name. If the regex permits duplicate names, the first
substring that is set is chosen.
Arguments:
code the compiled regex
subject the subject string that was matched
ovector pointer to the offsets table
stringcount the number of substrings that were captured
(i.e. the yield of the pcre_exec call, unless
that was zero, in which case it should be 1/3
of the offset table size)
stringname the name of the required substring
buffer where to put the substring
size the size of the buffer
Returns: if successful:
the length of the copied string, not including the zero
that is put on the end; can be zero
if not successful:
PCRE_ERROR_NOMEMORY (-6) buffer too small
PCRE_ERROR_NOSUBSTRING (-7) no such captured substring
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_copy_named_substring(const pcre *code, const char *subject,
int *ovector, int stringcount, const char *stringname,
char *buffer, int size)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_copy_named_substring(const pcre16 *code, PCRE_SPTR16 subject,
int *ovector, int stringcount, PCRE_SPTR16 stringname,
PCRE_UCHAR16 *buffer, int size)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_copy_named_substring(const pcre32 *code, PCRE_SPTR32 subject,
int *ovector, int stringcount, PCRE_SPTR32 stringname,
PCRE_UCHAR32 *buffer, int size)
#endif
{
int n = get_first_set(code, stringname, ovector, stringcount);
if (n <= 0) return n;
#if defined COMPILE_PCRE8
return pcre_copy_substring(subject, ovector, stringcount, n, buffer, size);
#elif defined COMPILE_PCRE16
return pcre16_copy_substring(subject, ovector, stringcount, n, buffer, size);
#elif defined COMPILE_PCRE32
return pcre32_copy_substring(subject, ovector, stringcount, n, buffer, size);
#endif
}
/*************************************************
* Copy all captured strings to new store *
*************************************************/
/* This function gets one chunk of store and builds a list of pointers and all
of the captured substrings in it. A NULL pointer is put on the end of the list.
Arguments:
subject the subject string that was matched
ovector pointer to the offsets table
stringcount the number of substrings that were captured
(i.e. the yield of the pcre_exec call, unless
that was zero, in which case it should be 1/3
of the offset table size)
listptr set to point to the list of pointers
Returns: if successful: 0
if not successful:
PCRE_ERROR_NOMEMORY (-6) failed to get store
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_get_substring_list(const char *subject, int *ovector, int stringcount,
const char ***listptr)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_get_substring_list(PCRE_SPTR16 subject, int *ovector, int stringcount,
PCRE_SPTR16 **listptr)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_get_substring_list(PCRE_SPTR32 subject, int *ovector, int stringcount,
PCRE_SPTR32 **listptr)
#endif
{
int i;
int size = sizeof(pcre_uchar *);
int double_count = stringcount * 2;
pcre_uchar **stringlist;
pcre_uchar *p;
for (i = 0; i < double_count; i += 2)
{
size += sizeof(pcre_uchar *) + IN_UCHARS(1);
if (ovector[i+1] > ovector[i]) size += IN_UCHARS(ovector[i+1] - ovector[i]);
}
stringlist = (pcre_uchar **)(PUBL(malloc))(size);
if (stringlist == NULL) return PCRE_ERROR_NOMEMORY;
#if defined COMPILE_PCRE8
*listptr = (const char **)stringlist;
#elif defined COMPILE_PCRE16
*listptr = (PCRE_SPTR16 *)stringlist;
#elif defined COMPILE_PCRE32
*listptr = (PCRE_SPTR32 *)stringlist;
#endif
p = (pcre_uchar *)(stringlist + stringcount + 1);
for (i = 0; i < double_count; i += 2)
{
int len = (ovector[i+1] > ovector[i])? (ovector[i+1] - ovector[i]) : 0;
memcpy(p, subject + ovector[i], IN_UCHARS(len));
*stringlist++ = p;
p += len;
*p++ = 0;
}
*stringlist = NULL;
return 0;
}
/*************************************************
* Free store obtained by get_substring_list *
*************************************************/
/* This function exists for the benefit of people calling PCRE from non-C
programs that can call its functions, but not free() or (PUBL(free))()
directly.
Argument: the result of a previous pcre_get_substring_list()
Returns: nothing
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN void PCRE_CALL_CONVENTION
pcre_free_substring_list(const char **pointer)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN void PCRE_CALL_CONVENTION
pcre16_free_substring_list(PCRE_SPTR16 *pointer)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN void PCRE_CALL_CONVENTION
pcre32_free_substring_list(PCRE_SPTR32 *pointer)
#endif
{
(PUBL(free))((void *)pointer);
}
/*************************************************
* Copy captured string to new store *
*************************************************/
/* This function copies a single captured substring into a piece of new
store
Arguments:
subject the subject string that was matched
ovector pointer to the offsets table
stringcount the number of substrings that were captured
(i.e. the yield of the pcre_exec call, unless
that was zero, in which case it should be 1/3
of the offset table size)
stringnumber the number of the required substring
stringptr where to put a pointer to the substring
Returns: if successful:
the length of the string, not including the zero that
is put on the end; can be zero
if not successful:
PCRE_ERROR_NOMEMORY (-6) failed to get store
PCRE_ERROR_NOSUBSTRING (-7) substring not present
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_get_substring(const char *subject, int *ovector, int stringcount,
int stringnumber, const char **stringptr)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_get_substring(PCRE_SPTR16 subject, int *ovector, int stringcount,
int stringnumber, PCRE_SPTR16 *stringptr)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_get_substring(PCRE_SPTR32 subject, int *ovector, int stringcount,
int stringnumber, PCRE_SPTR32 *stringptr)
#endif
{
int yield;
pcre_uchar *substring;
if (stringnumber < 0 || stringnumber >= stringcount)
return PCRE_ERROR_NOSUBSTRING;
stringnumber *= 2;
yield = ovector[stringnumber+1] - ovector[stringnumber];
substring = (pcre_uchar *)(PUBL(malloc))(IN_UCHARS(yield + 1));
if (substring == NULL) return PCRE_ERROR_NOMEMORY;
memcpy(substring, subject + ovector[stringnumber], IN_UCHARS(yield));
substring[yield] = 0;
#if defined COMPILE_PCRE8
*stringptr = (const char *)substring;
#elif defined COMPILE_PCRE16
*stringptr = (PCRE_SPTR16)substring;
#elif defined COMPILE_PCRE32
*stringptr = (PCRE_SPTR32)substring;
#endif
return yield;
}
/*************************************************
* Copy named captured string to new store *
*************************************************/
/* This function copies a single captured substring, identified by name, into
new store. If the regex permits duplicate names, the first substring that is
set is chosen.
Arguments:
code the compiled regex
subject the subject string that was matched
ovector pointer to the offsets table
stringcount the number of substrings that were captured
(i.e. the yield of the pcre_exec call, unless
that was zero, in which case it should be 1/3
of the offset table size)
stringname the name of the required substring
stringptr where to put the pointer
Returns: if successful:
the length of the copied string, not including the zero
that is put on the end; can be zero
if not successful:
PCRE_ERROR_NOMEMORY (-6) couldn't get memory
PCRE_ERROR_NOSUBSTRING (-7) no such captured substring
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_get_named_substring(const pcre *code, const char *subject,
int *ovector, int stringcount, const char *stringname,
const char **stringptr)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_get_named_substring(const pcre16 *code, PCRE_SPTR16 subject,
int *ovector, int stringcount, PCRE_SPTR16 stringname,
PCRE_SPTR16 *stringptr)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_get_named_substring(const pcre32 *code, PCRE_SPTR32 subject,
int *ovector, int stringcount, PCRE_SPTR32 stringname,
PCRE_SPTR32 *stringptr)
#endif
{
int n = get_first_set(code, stringname, ovector, stringcount);
if (n <= 0) return n;
#if defined COMPILE_PCRE8
return pcre_get_substring(subject, ovector, stringcount, n, stringptr);
#elif defined COMPILE_PCRE16
return pcre16_get_substring(subject, ovector, stringcount, n, stringptr);
#elif defined COMPILE_PCRE32
return pcre32_get_substring(subject, ovector, stringcount, n, stringptr);
#endif
}
/*************************************************
* Free store obtained by get_substring *
*************************************************/
/* This function exists for the benefit of people calling PCRE from non-C
programs that can call its functions, but not free() or (PUBL(free))()
directly.
Argument: the result of a previous pcre_get_substring()
Returns: nothing
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN void PCRE_CALL_CONVENTION
pcre_free_substring(const char *pointer)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN void PCRE_CALL_CONVENTION
pcre16_free_substring(PCRE_SPTR16 pointer)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN void PCRE_CALL_CONVENTION
pcre32_free_substring(PCRE_SPTR32 pointer)
#endif
{
(PUBL(free))((void *)pointer);
}
/* End of pcre_get.c */
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/CMakeLists.txt
|
INCLUDE(CheckIncludeFile)
INCLUDE(CheckFunctionExists)
INCLUDE(CheckTypeSize)
CHECK_INCLUDE_FILE(dirent.h HAVE_DIRENT_H)
CHECK_INCLUDE_FILE(stdint.h HAVE_STDINT_H)
CHECK_INCLUDE_FILE(inttypes.h HAVE_INTTYPES_H)
CHECK_INCLUDE_FILE(sys/stat.h HAVE_SYS_STAT_H)
CHECK_INCLUDE_FILE(sys/types.h HAVE_SYS_TYPES_H)
CHECK_INCLUDE_FILE(unistd.h HAVE_UNISTD_H)
CHECK_INCLUDE_FILE(windows.h HAVE_WINDOWS_H)
CHECK_FUNCTION_EXISTS(bcopy HAVE_BCOPY)
CHECK_FUNCTION_EXISTS(memmove HAVE_MEMMOVE)
CHECK_FUNCTION_EXISTS(strerror HAVE_STRERROR)
CHECK_FUNCTION_EXISTS(strtoll HAVE_STRTOLL)
CHECK_FUNCTION_EXISTS(strtoq HAVE_STRTOQ)
CHECK_FUNCTION_EXISTS(_strtoi64 HAVE__STRTOI64)
CHECK_TYPE_SIZE("long long" LONG_LONG)
CHECK_TYPE_SIZE("unsigned long long" UNSIGNED_LONG_LONG)
DISABLE_WARNINGS(unused-function)
DISABLE_WARNINGS(implicit-fallthrough)
# User-configurable options
SET(SUPPORT_PCRE8 1)
SET(PCRE_LINK_SIZE "2")
SET(PCRE_PARENS_NEST_LIMIT "250")
SET(PCRE_MATCH_LIMIT "10000000")
SET(PCRE_MATCH_LIMIT_RECURSION "MATCH_LIMIT")
SET(PCRE_NEWLINE "LF")
SET(NO_RECURSE 1)
SET(PCRE_POSIX_MALLOC_THRESHOLD "10")
SET(BSR_ANYCRLF 0)
IF (MINGW)
OPTION(NON_STANDARD_LIB_PREFIX
"ON=Shared libraries built in mingw will be named pcre.dll, etc., instead of libpcre.dll, etc."
OFF)
OPTION(NON_STANDARD_LIB_SUFFIX
"ON=Shared libraries built in mingw will be named libpcre-0.dll, etc., instead of libpcre.dll, etc."
OFF)
ENDIF(MINGW)
# Prepare build configuration
SET(pcre_have_long_long 0)
SET(pcre_have_ulong_long 0)
IF(HAVE_LONG_LONG)
SET(pcre_have_long_long 1)
ENDIF(HAVE_LONG_LONG)
IF(HAVE_UNSIGNED_LONG_LONG)
SET(pcre_have_ulong_long 1)
ENDIF(HAVE_UNSIGNED_LONG_LONG)
SET(NEWLINE "")
IF(PCRE_NEWLINE STREQUAL "LF")
SET(NEWLINE "10")
ENDIF(PCRE_NEWLINE STREQUAL "LF")
IF(PCRE_NEWLINE STREQUAL "CR")
SET(NEWLINE "13")
ENDIF(PCRE_NEWLINE STREQUAL "CR")
IF(PCRE_NEWLINE STREQUAL "CRLF")
SET(NEWLINE "3338")
ENDIF(PCRE_NEWLINE STREQUAL "CRLF")
IF(PCRE_NEWLINE STREQUAL "ANY")
SET(NEWLINE "-1")
ENDIF(PCRE_NEWLINE STREQUAL "ANY")
IF(PCRE_NEWLINE STREQUAL "ANYCRLF")
SET(NEWLINE "-2")
ENDIF(PCRE_NEWLINE STREQUAL "ANYCRLF")
IF(NEWLINE STREQUAL "")
MESSAGE(FATAL_ERROR "The PCRE_NEWLINE variable must be set to one of the following values: \"LF\", \"CR\", \"CRLF\", \"ANY\", \"ANYCRLF\".")
ENDIF(NEWLINE STREQUAL "")
# Output files
CONFIGURE_FILE(config.h.in
${PROJECT_BINARY_DIR}/src/pcre/config.h
@ONLY)
# Source code
SET(PCRE_HEADERS ${PROJECT_BINARY_DIR}/src/pcre/config.h)
SET(PCRE_SOURCES
pcre_byte_order.c
pcre_chartables.c
pcre_compile.c
pcre_config.c
pcre_dfa_exec.c
pcre_exec.c
pcre_fullinfo.c
pcre_get.c
pcre_globals.c
pcre_jit_compile.c
pcre_maketables.c
pcre_newline.c
pcre_ord2utf8.c
pcre_refcount.c
pcre_string_utils.c
pcre_study.c
pcre_tables.c
pcre_ucd.c
pcre_valid_utf8.c
pcre_version.c
pcre_xclass.c
)
SET(PCREPOSIX_HEADERS pcreposix.h)
SET(PCREPOSIX_SOURCES pcreposix.c)
# Fix static compilation with MSVC: https://bugs.exim.org/show_bug.cgi?id=1681
# This code was taken from the CMake wiki, not from WebM.
# Build setup
ADD_DEFINITIONS(-DHAVE_CONFIG_H)
IF(MSVC)
ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS)
ENDIF(MSVC)
SET(CMAKE_INCLUDE_CURRENT_DIR 1)
SET(targets)
# Libraries
# pcre
INCLUDE_DIRECTORIES(${PROJECT_BINARY_DIR}/src/pcre)
ADD_LIBRARY(pcre OBJECT ${PCRE_HEADERS} ${PCRE_SOURCES} ${PCREPOSIX_SOURCES})
# end CMakeLists.txt
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_internal.h
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/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2016 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This header contains definitions that are shared between the different
modules, but which are not relevant to the exported API. This includes some
functions whose names all begin with "_pcre_", "_pcre16_" or "_pcre32_"
depending on the PRIV macro. */
#ifndef PCRE_INTERNAL_H
#define PCRE_INTERNAL_H
/* Define PCRE_DEBUG to get debugging output on stdout. */
#if 0
#define PCRE_DEBUG
#endif
/* PCRE is compiled as an 8 bit library if it is not requested otherwise. */
#if !defined COMPILE_PCRE16 && !defined COMPILE_PCRE32
#define COMPILE_PCRE8
#endif
/* If SUPPORT_UCP is defined, SUPPORT_UTF must also be defined. The
"configure" script ensures this, but not everybody uses "configure". */
#if defined SUPPORT_UCP && !(defined SUPPORT_UTF)
#define SUPPORT_UTF 1
#endif
/* We define SUPPORT_UTF if SUPPORT_UTF8 is enabled for compatibility
reasons with existing code. */
#if defined SUPPORT_UTF8 && !(defined SUPPORT_UTF)
#define SUPPORT_UTF 1
#endif
/* Fixme: SUPPORT_UTF8 should be eventually disappear from the code.
Until then we define it if SUPPORT_UTF is defined. */
#if defined SUPPORT_UTF && !(defined SUPPORT_UTF8)
#define SUPPORT_UTF8 1
#endif
/* We do not support both EBCDIC and UTF-8/16/32 at the same time. The "configure"
script prevents both being selected, but not everybody uses "configure". */
#if defined EBCDIC && defined SUPPORT_UTF
#error The use of both EBCDIC and SUPPORT_UTF is not supported.
#endif
/* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
inline, and there are *still* stupid compilers about that don't like indented
pre-processor statements, or at least there were when I first wrote this. After
all, it had only been about 10 years then...
It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
be absolutely sure we get our version. */
#undef DPRINTF
#ifdef PCRE_DEBUG
#define DPRINTF(p) printf p
#else
#define DPRINTF(p) /* Nothing */
#endif
/* Standard C headers plus the external interface definition. The only time
setjmp and stdarg are used is when NO_RECURSE is set. */
#include <ctype.h>
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* Valgrind (memcheck) support */
#ifdef SUPPORT_VALGRIND
#include <valgrind/memcheck.h>
#endif
/* When compiling a DLL for Windows, the exported symbols have to be declared
using some MS magic. I found some useful information on this web page:
http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
information there, using __declspec(dllexport) without "extern" we have a
definition; with "extern" we have a declaration. The settings here override the
setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
which is all that is needed for applications (they just import the symbols). We
use:
PCRE_EXP_DECL for declarations
PCRE_EXP_DEFN for definitions of exported functions
PCRE_EXP_DATA_DEFN for definitions of exported variables
The reason for the two DEFN macros is that in non-Windows environments, one
does not want to have "extern" before variable definitions because it leads to
compiler warnings. So we distinguish between functions and variables. In
Windows, the two should always be the same.
The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
which is an application, but needs to import this file in order to "peek" at
internals, can #include pcre.h first to get an application's-eye view.
In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
special-purpose environments) might want to stick other stuff in front of
exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
PCRE_EXP_DATA_DEFN only if they are not already set. */
#ifndef PCRE_EXP_DECL
# define PCRE_EXP_DECL extern
# define PCRE_EXP_DEFN
# define PCRE_EXP_DATA_DEFN
#endif
/* When compiling with the MSVC compiler, it is sometimes necessary to include
a "calling convention" before exported function names. (This is secondhand
information; I know nothing about MSVC myself). For example, something like
void __cdecl function(....)
might be needed. In order so make this easy, all the exported functions have
PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
set, we ensure here that it has no effect. */
#ifndef PCRE_CALL_CONVENTION
#define PCRE_CALL_CONVENTION
#endif
/* We need to have types that specify unsigned 8, 16 and 32-bit integers. We
cannot determine these outside the compilation (e.g. by running a program as
part of "configure") because PCRE is often cross-compiled for use on other
systems. Instead we make use of the maximum sizes that are available at
preprocessor time in standard C environments. */
typedef unsigned char pcre_uint8;
#if USHRT_MAX == 65535
typedef unsigned short pcre_uint16;
typedef short pcre_int16;
#define PCRE_UINT16_MAX USHRT_MAX
#define PCRE_INT16_MAX SHRT_MAX
#elif UINT_MAX == 65535
typedef unsigned int pcre_uint16;
typedef int pcre_int16;
#define PCRE_UINT16_MAX UINT_MAX
#define PCRE_INT16_MAX INT_MAX
#else
#error Cannot determine a type for 16-bit integers
#endif
#if UINT_MAX == 4294967295U
typedef unsigned int pcre_uint32;
typedef int pcre_int32;
#define PCRE_UINT32_MAX UINT_MAX
#define PCRE_INT32_MAX INT_MAX
#elif ULONG_MAX == 4294967295UL
typedef unsigned long int pcre_uint32;
typedef long int pcre_int32;
#define PCRE_UINT32_MAX ULONG_MAX
#define PCRE_INT32_MAX LONG_MAX
#else
#error Cannot determine a type for 32-bit integers
#endif
/* When checking for integer overflow in pcre_compile(), we need to handle
large integers. If a 64-bit integer type is available, we can use that.
Otherwise we have to cast to double, which of course requires floating point
arithmetic. Handle this by defining a macro for the appropriate type. If
stdint.h is available, include it; it may define INT64_MAX. Systems that do not
have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
by "configure". */
#if defined HAVE_STDINT_H
#include <stdint.h>
#elif defined HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#if defined INT64_MAX || defined int64_t
#define INT64_OR_DOUBLE int64_t
#else
#define INT64_OR_DOUBLE double
#endif
/* All character handling must be done as unsigned characters. Otherwise there
are problems with top-bit-set characters and functions such as isspace().
However, we leave the interface to the outside world as char * or short *,
because that should make things easier for callers. This character type is
called pcre_uchar.
The IN_UCHARS macro multiply its argument with the byte size of the current
pcre_uchar type. Useful for memcpy and such operations, whose require the
byte size of their input/output buffers.
The MAX_255 macro checks whether its pcre_uchar input is less than 256.
The TABLE_GET macro is designed for accessing elements of tables whose contain
exactly 256 items. When the character is able to contain more than 256
items, some check is needed before accessing these tables.
*/
#if defined COMPILE_PCRE8
typedef unsigned char pcre_uchar;
#define IN_UCHARS(x) (x)
#define MAX_255(c) 1
#define TABLE_GET(c, table, default) ((table)[c])
#elif defined COMPILE_PCRE16
#if USHRT_MAX != 65535
/* This is a warning message. Change PCRE_UCHAR16 to a 16 bit data type in
pcre.h(.in) and disable (comment out) this message. */
#error Warning: PCRE_UCHAR16 is not a 16 bit data type.
#endif
typedef pcre_uint16 pcre_uchar;
#define UCHAR_SHIFT (1)
#define IN_UCHARS(x) ((x) * 2)
#define MAX_255(c) ((c) <= 255u)
#define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
#elif defined COMPILE_PCRE32
typedef pcre_uint32 pcre_uchar;
#define UCHAR_SHIFT (2)
#define IN_UCHARS(x) ((x) * 4)
#define MAX_255(c) ((c) <= 255u)
#define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
#else
#error Unsupported compiling mode
#endif /* COMPILE_PCRE[8|16|32] */
/* This is an unsigned int value that no character can ever have. UTF-8
characters only go up to 0x7fffffff (though Unicode doesn't go beyond
0x0010ffff). */
#define NOTACHAR 0xffffffff
/* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
"any" and "anycrlf" at present). The following macros are used to package up
testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
modules to indicate in which datablock the parameters exist, and what the
start/end of string field names are. */
#define NLTYPE_FIXED 0 /* Newline is a fixed length string */
#define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
#define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
/* This macro checks for a newline at the given position */
#define IS_NEWLINE(p) \
((NLBLOCK->nltype != NLTYPE_FIXED)? \
((p) < NLBLOCK->PSEND && \
PRIV(is_newline)((p), NLBLOCK->nltype, NLBLOCK->PSEND, \
&(NLBLOCK->nllen), utf)) \
: \
((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
UCHAR21TEST(p) == NLBLOCK->nl[0] && \
(NLBLOCK->nllen == 1 || UCHAR21TEST(p+1) == NLBLOCK->nl[1]) \
) \
)
/* This macro checks for a newline immediately preceding the given position */
#define WAS_NEWLINE(p) \
((NLBLOCK->nltype != NLTYPE_FIXED)? \
((p) > NLBLOCK->PSSTART && \
PRIV(was_newline)((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
&(NLBLOCK->nllen), utf)) \
: \
((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
UCHAR21TEST(p - NLBLOCK->nllen) == NLBLOCK->nl[0] && \
(NLBLOCK->nllen == 1 || UCHAR21TEST(p - NLBLOCK->nllen + 1) == NLBLOCK->nl[1]) \
) \
)
/* When PCRE is compiled as a C++ library, the subject pointer can be replaced
with a custom type. This makes it possible, for example, to allow pcre_exec()
to process subject strings that are discontinuous by using a smart pointer
class. It must always be possible to inspect all of the subject string in
pcre_exec() because of the way it backtracks. Two macros are required in the
normal case, for sign-unspecified and unsigned char pointers. The former is
used for the external interface and appears in pcre.h, which is why its name
must begin with PCRE_. */
#ifdef CUSTOM_SUBJECT_PTR
#define PCRE_PUCHAR CUSTOM_SUBJECT_PTR
#else
#define PCRE_PUCHAR const pcre_uchar *
#endif
/* Include the public PCRE header and the definitions of UCP character property
values. */
#include "pcre.h"
#include "ucp.h"
#ifdef COMPILE_PCRE32
/* Assert that the public PCRE_UCHAR32 is a 32-bit type */
typedef int __assert_pcre_uchar32_size[sizeof(PCRE_UCHAR32) == 4 ? 1 : -1];
#endif
/* When compiling for use with the Virtual Pascal compiler, these functions
need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
option on the command line. */
#ifdef VPCOMPAT
#define strlen(s) _strlen(s)
#define strncmp(s1,s2,m) _strncmp(s1,s2,m)
#define memcmp(s,c,n) _memcmp(s,c,n)
#define memcpy(d,s,n) _memcpy(d,s,n)
#define memmove(d,s,n) _memmove(d,s,n)
#define memset(s,c,n) _memset(s,c,n)
#else /* VPCOMPAT */
/* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
is set. Otherwise, include an emulating function for those systems that have
neither (there some non-Unix environments where this is the case). */
#ifndef HAVE_MEMMOVE
#undef memmove /* some systems may have a macro */
#ifdef HAVE_BCOPY
#define memmove(a, b, c) bcopy(b, a, c)
#else /* HAVE_BCOPY */
static void *
pcre_memmove(void *d, const void *s, size_t n)
{
size_t i;
unsigned char *dest = (unsigned char *)d;
const unsigned char *src = (const unsigned char *)s;
if (dest > src)
{
dest += n;
src += n;
for (i = 0; i < n; ++i) *(--dest) = *(--src);
return (void *)dest;
}
else
{
for (i = 0; i < n; ++i) *dest++ = *src++;
return (void *)(dest - n);
}
}
#define memmove(a, b, c) pcre_memmove(a, b, c)
#endif /* not HAVE_BCOPY */
#endif /* not HAVE_MEMMOVE */
#endif /* not VPCOMPAT */
/* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
in big-endian order) by default. These are used, for example, to link from the
start of a subpattern to its alternatives and its end. The use of 2 bytes per
offset limits the size of the compiled regex to around 64K, which is big enough
for almost everybody. However, I received a request for an even bigger limit.
For this reason, and also to make the code easier to maintain, the storing and
loading of offsets from the byte string is now handled by the macros that are
defined here.
The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
the config.h file, but can be overridden by using -D on the command line. This
is automated on Unix systems via the "configure" command. */
#if defined COMPILE_PCRE8
#if LINK_SIZE == 2
#define PUT(a,n,d) \
(a[n] = (d) >> 8), \
(a[(n)+1] = (d) & 255)
#define GET(a,n) \
(((a)[n] << 8) | (a)[(n)+1])
#define MAX_PATTERN_SIZE (1 << 16)
#elif LINK_SIZE == 3
#define PUT(a,n,d) \
(a[n] = (d) >> 16), \
(a[(n)+1] = (d) >> 8), \
(a[(n)+2] = (d) & 255)
#define GET(a,n) \
(((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
#define MAX_PATTERN_SIZE (1 << 24)
#elif LINK_SIZE == 4
#define PUT(a,n,d) \
(a[n] = (d) >> 24), \
(a[(n)+1] = (d) >> 16), \
(a[(n)+2] = (d) >> 8), \
(a[(n)+3] = (d) & 255)
#define GET(a,n) \
(((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
/* Keep it positive */
#define MAX_PATTERN_SIZE (1 << 30)
#else
#error LINK_SIZE must be either 2, 3, or 4
#endif
#elif defined COMPILE_PCRE16
#if LINK_SIZE == 2
/* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
#undef LINK_SIZE
#define LINK_SIZE 1
#define PUT(a,n,d) \
(a[n] = (d))
#define GET(a,n) \
(a[n])
#define MAX_PATTERN_SIZE (1 << 16)
#elif LINK_SIZE == 3 || LINK_SIZE == 4
/* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
#undef LINK_SIZE
#define LINK_SIZE 2
#define PUT(a,n,d) \
(a[n] = (d) >> 16), \
(a[(n)+1] = (d) & 65535)
#define GET(a,n) \
(((a)[n] << 16) | (a)[(n)+1])
/* Keep it positive */
#define MAX_PATTERN_SIZE (1 << 30)
#else
#error LINK_SIZE must be either 2, 3, or 4
#endif
#elif defined COMPILE_PCRE32
/* Only supported LINK_SIZE is 4 */
/* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
#undef LINK_SIZE
#define LINK_SIZE 1
#define PUT(a,n,d) \
(a[n] = (d))
#define GET(a,n) \
(a[n])
/* Keep it positive */
#define MAX_PATTERN_SIZE (1 << 30)
#else
#error Unsupported compiling mode
#endif /* COMPILE_PCRE[8|16|32] */
/* Convenience macro defined in terms of the others */
#define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
/* PCRE uses some other 2-byte quantities that do not change when the size of
offsets changes. There are used for repeat counts and for other things such as
capturing parenthesis numbers in back references. */
#if defined COMPILE_PCRE8
#define IMM2_SIZE 2
#define PUT2(a,n,d) \
a[n] = (d) >> 8; \
a[(n)+1] = (d) & 255
/* For reasons that I do not understand, the expression in this GET2 macro is
treated by gcc as a signed expression, even when a is declared as unsigned. It
seems that any kind of arithmetic results in a signed value. */
#define GET2(a,n) \
(unsigned int)(((a)[n] << 8) | (a)[(n)+1])
#elif defined COMPILE_PCRE16
#define IMM2_SIZE 1
#define PUT2(a,n,d) \
a[n] = d
#define GET2(a,n) \
a[n]
#elif defined COMPILE_PCRE32
#define IMM2_SIZE 1
#define PUT2(a,n,d) \
a[n] = d
#define GET2(a,n) \
a[n]
#else
#error Unsupported compiling mode
#endif /* COMPILE_PCRE[8|16|32] */
#define PUT2INC(a,n,d) PUT2(a,n,d), a += IMM2_SIZE
/* The maximum length of a MARK name is currently one data unit; it may be
changed in future to be a fixed number of bytes or to depend on LINK_SIZE. */
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
#define MAX_MARK ((1u << 16) - 1)
#else
#define MAX_MARK ((1u << 8) - 1)
#endif
/* There is a proposed future special "UTF-21" mode, in which only the lowest
21 bits of a 32-bit character are interpreted as UTF, with the remaining 11
high-order bits available to the application for other uses. In preparation for
the future implementation of this mode, there are macros that load a data item
and, if in this special mode, mask it to 21 bits. These macros all have names
starting with UCHAR21. In all other modes, including the normal 32-bit
library, the macros all have the same simple definitions. When the new mode is
implemented, it is expected that these definitions will be varied appropriately
using #ifdef when compiling the library that supports the special mode. */
#define UCHAR21(eptr) (*(eptr))
#define UCHAR21TEST(eptr) (*(eptr))
#define UCHAR21INC(eptr) (*(eptr)++)
#define UCHAR21INCTEST(eptr) (*(eptr)++)
/* When UTF encoding is being used, a character is no longer just a single
byte in 8-bit mode or a single short in 16-bit mode. The macros for character
handling generate simple sequences when used in the basic mode, and more
complicated ones for UTF characters. GETCHARLENTEST and other macros are not
used when UTF is not supported. To make sure they can never even appear when
UTF support is omitted, we don't even define them. */
#ifndef SUPPORT_UTF
/* #define MAX_VALUE_FOR_SINGLE_CHAR */
/* #define HAS_EXTRALEN(c) */
/* #define GET_EXTRALEN(c) */
/* #define NOT_FIRSTCHAR(c) */
#define GETCHAR(c, eptr) c = *eptr;
#define GETCHARTEST(c, eptr) c = *eptr;
#define GETCHARINC(c, eptr) c = *eptr++;
#define GETCHARINCTEST(c, eptr) c = *eptr++;
#define GETCHARLEN(c, eptr, len) c = *eptr;
/* #define GETCHARLENTEST(c, eptr, len) */
/* #define BACKCHAR(eptr) */
/* #define FORWARDCHAR(eptr) */
/* #define ACROSSCHAR(condition, eptr, action) */
#else /* SUPPORT_UTF */
/* Tests whether the code point needs extra characters to decode. */
#define HASUTF8EXTRALEN(c) ((c) >= 0xc0)
/* Base macro to pick up the remaining bytes of a UTF-8 character, not
advancing the pointer. */
#define GETUTF8(c, eptr) \
{ \
if ((c & 0x20) == 0) \
c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
else if ((c & 0x10) == 0) \
c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
else if ((c & 0x08) == 0) \
c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
else if ((c & 0x04) == 0) \
c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
(eptr[4] & 0x3f); \
else \
c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
}
/* Base macro to pick up the remaining bytes of a UTF-8 character, advancing
the pointer. */
#define GETUTF8INC(c, eptr) \
{ \
if ((c & 0x20) == 0) \
c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \
else if ((c & 0x10) == 0) \
{ \
c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \
eptr += 2; \
} \
else if ((c & 0x08) == 0) \
{ \
c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \
((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
eptr += 3; \
} \
else if ((c & 0x04) == 0) \
{ \
c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \
((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \
(eptr[3] & 0x3f); \
eptr += 4; \
} \
else \
{ \
c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \
((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \
((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \
eptr += 5; \
} \
}
#if defined COMPILE_PCRE8
/* These macros were originally written in the form of loops that used data
from the tables whose names start with PRIV(utf8_table). They were rewritten by
a user so as not to use loops, because in some environments this gives a
significant performance advantage, and it seems never to do any harm. */
/* Tells the biggest code point which can be encoded as a single character. */
#define MAX_VALUE_FOR_SINGLE_CHAR 127
/* Tests whether the code point needs extra characters to decode. */
#define HAS_EXTRALEN(c) ((c) >= 0xc0)
/* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
Otherwise it has an undefined behaviour. */
#define GET_EXTRALEN(c) (PRIV(utf8_table4)[(c) & 0x3f])
/* Returns TRUE, if the given character is not the first character
of a UTF sequence. */
#define NOT_FIRSTCHAR(c) (((c) & 0xc0) == 0x80)
/* Get the next UTF-8 character, not advancing the pointer. This is called when
we know we are in UTF-8 mode. */
#define GETCHAR(c, eptr) \
c = *eptr; \
if (c >= 0xc0) GETUTF8(c, eptr);
/* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
pointer. */
#define GETCHARTEST(c, eptr) \
c = *eptr; \
if (utf && c >= 0xc0) GETUTF8(c, eptr);
/* Get the next UTF-8 character, advancing the pointer. This is called when we
know we are in UTF-8 mode. */
#define GETCHARINC(c, eptr) \
c = *eptr++; \
if (c >= 0xc0) GETUTF8INC(c, eptr);
/* Get the next character, testing for UTF-8 mode, and advancing the pointer.
This is called when we don't know if we are in UTF-8 mode. */
#define GETCHARINCTEST(c, eptr) \
c = *eptr++; \
if (utf && c >= 0xc0) GETUTF8INC(c, eptr);
/* Base macro to pick up the remaining bytes of a UTF-8 character, not
advancing the pointer, incrementing the length. */
#define GETUTF8LEN(c, eptr, len) \
{ \
if ((c & 0x20) == 0) \
{ \
c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
len++; \
} \
else if ((c & 0x10) == 0) \
{ \
c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
len += 2; \
} \
else if ((c & 0x08) == 0) \
{\
c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
len += 3; \
} \
else if ((c & 0x04) == 0) \
{ \
c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
(eptr[4] & 0x3f); \
len += 4; \
} \
else \
{\
c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
len += 5; \
} \
}
/* Get the next UTF-8 character, not advancing the pointer, incrementing length
if there are extra bytes. This is called when we know we are in UTF-8 mode. */
#define GETCHARLEN(c, eptr, len) \
c = *eptr; \
if (c >= 0xc0) GETUTF8LEN(c, eptr, len);
/* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
pointer, incrementing length if there are extra bytes. This is called when we
do not know if we are in UTF-8 mode. */
#define GETCHARLENTEST(c, eptr, len) \
c = *eptr; \
if (utf && c >= 0xc0) GETUTF8LEN(c, eptr, len);
/* If the pointer is not at the start of a character, move it back until
it is. This is called only in UTF-8 mode - we don't put a test within the macro
because almost all calls are already within a block of UTF-8 only code. */
#define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
/* Same as above, just in the other direction. */
#define FORWARDCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr++
/* Same as above, but it allows a fully customizable form. */
#define ACROSSCHAR(condition, eptr, action) \
while((condition) && ((eptr) & 0xc0) == 0x80) action
#elif defined COMPILE_PCRE16
/* Tells the biggest code point which can be encoded as a single character. */
#define MAX_VALUE_FOR_SINGLE_CHAR 65535
/* Tests whether the code point needs extra characters to decode. */
#define HAS_EXTRALEN(c) (((c) & 0xfc00) == 0xd800)
/* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
Otherwise it has an undefined behaviour. */
#define GET_EXTRALEN(c) 1
/* Returns TRUE, if the given character is not the first character
of a UTF sequence. */
#define NOT_FIRSTCHAR(c) (((c) & 0xfc00) == 0xdc00)
/* Base macro to pick up the low surrogate of a UTF-16 character, not
advancing the pointer. */
#define GETUTF16(c, eptr) \
{ c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; }
/* Get the next UTF-16 character, not advancing the pointer. This is called when
we know we are in UTF-16 mode. */
#define GETCHAR(c, eptr) \
c = *eptr; \
if ((c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
/* Get the next UTF-16 character, testing for UTF-16 mode, and not advancing the
pointer. */
#define GETCHARTEST(c, eptr) \
c = *eptr; \
if (utf && (c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
/* Base macro to pick up the low surrogate of a UTF-16 character, advancing
the pointer. */
#define GETUTF16INC(c, eptr) \
{ c = (((c & 0x3ff) << 10) | (*eptr++ & 0x3ff)) + 0x10000; }
/* Get the next UTF-16 character, advancing the pointer. This is called when we
know we are in UTF-16 mode. */
#define GETCHARINC(c, eptr) \
c = *eptr++; \
if ((c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
/* Get the next character, testing for UTF-16 mode, and advancing the pointer.
This is called when we don't know if we are in UTF-16 mode. */
#define GETCHARINCTEST(c, eptr) \
c = *eptr++; \
if (utf && (c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
/* Base macro to pick up the low surrogate of a UTF-16 character, not
advancing the pointer, incrementing the length. */
#define GETUTF16LEN(c, eptr, len) \
{ c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; len++; }
/* Get the next UTF-16 character, not advancing the pointer, incrementing
length if there is a low surrogate. This is called when we know we are in
UTF-16 mode. */
#define GETCHARLEN(c, eptr, len) \
c = *eptr; \
if ((c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
/* Get the next UTF-816character, testing for UTF-16 mode, not advancing the
pointer, incrementing length if there is a low surrogate. This is called when
we do not know if we are in UTF-16 mode. */
#define GETCHARLENTEST(c, eptr, len) \
c = *eptr; \
if (utf && (c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
/* If the pointer is not at the start of a character, move it back until
it is. This is called only in UTF-16 mode - we don't put a test within the
macro because almost all calls are already within a block of UTF-16 only
code. */
#define BACKCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr--
/* Same as above, just in the other direction. */
#define FORWARDCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr++
/* Same as above, but it allows a fully customizable form. */
#define ACROSSCHAR(condition, eptr, action) \
if ((condition) && ((eptr) & 0xfc00) == 0xdc00) action
#elif defined COMPILE_PCRE32
/* These are trivial for the 32-bit library, since all UTF-32 characters fit
into one pcre_uchar unit. */
#define MAX_VALUE_FOR_SINGLE_CHAR (0x10ffffu)
#define HAS_EXTRALEN(c) (0)
#define GET_EXTRALEN(c) (0)
#define NOT_FIRSTCHAR(c) (0)
/* Get the next UTF-32 character, not advancing the pointer. This is called when
we know we are in UTF-32 mode. */
#define GETCHAR(c, eptr) \
c = *(eptr);
/* Get the next UTF-32 character, testing for UTF-32 mode, and not advancing the
pointer. */
#define GETCHARTEST(c, eptr) \
c = *(eptr);
/* Get the next UTF-32 character, advancing the pointer. This is called when we
know we are in UTF-32 mode. */
#define GETCHARINC(c, eptr) \
c = *((eptr)++);
/* Get the next character, testing for UTF-32 mode, and advancing the pointer.
This is called when we don't know if we are in UTF-32 mode. */
#define GETCHARINCTEST(c, eptr) \
c = *((eptr)++);
/* Get the next UTF-32 character, not advancing the pointer, not incrementing
length (since all UTF-32 is of length 1). This is called when we know we are in
UTF-32 mode. */
#define GETCHARLEN(c, eptr, len) \
GETCHAR(c, eptr)
/* Get the next UTF-32character, testing for UTF-32 mode, not advancing the
pointer, not incrementing the length (since all UTF-32 is of length 1).
This is called when we do not know if we are in UTF-32 mode. */
#define GETCHARLENTEST(c, eptr, len) \
GETCHARTEST(c, eptr)
/* If the pointer is not at the start of a character, move it back until
it is. This is called only in UTF-32 mode - we don't put a test within the
macro because almost all calls are already within a block of UTF-32 only
code.
These are all no-ops since all UTF-32 characters fit into one pcre_uchar. */
#define BACKCHAR(eptr) do { } while (0)
/* Same as above, just in the other direction. */
#define FORWARDCHAR(eptr) do { } while (0)
/* Same as above, but it allows a fully customizable form. */
#define ACROSSCHAR(condition, eptr, action) do { } while (0)
#else
#error Unsupported compiling mode
#endif /* COMPILE_PCRE[8|16|32] */
#endif /* SUPPORT_UTF */
/* Tests for Unicode horizontal and vertical whitespace characters must check a
number of different values. Using a switch statement for this generates the
fastest code (no loop, no memory access), and there are several places in the
interpreter code where this happens. In order to ensure that all the case lists
remain in step, we use macros so that there is only one place where the lists
are defined.
These values are also required as lists in pcre_compile.c when processing \h,
\H, \v and \V in a character class. The lists are defined in pcre_tables.c, but
macros that define the values are here so that all the definitions are
together. The lists must be in ascending character order, terminated by
NOTACHAR (which is 0xffffffff).
Any changes should ensure that the various macros are kept in step with each
other. NOTE: The values also appear in pcre_jit_compile.c. */
/* ------ ASCII/Unicode environments ------ */
#ifndef EBCDIC
#define HSPACE_LIST \
CHAR_HT, CHAR_SPACE, CHAR_NBSP, \
0x1680, 0x180e, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, \
0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202f, 0x205f, 0x3000, \
NOTACHAR
#define HSPACE_MULTIBYTE_CASES \
case 0x1680: /* OGHAM SPACE MARK */ \
case 0x180e: /* MONGOLIAN VOWEL SEPARATOR */ \
case 0x2000: /* EN QUAD */ \
case 0x2001: /* EM QUAD */ \
case 0x2002: /* EN SPACE */ \
case 0x2003: /* EM SPACE */ \
case 0x2004: /* THREE-PER-EM SPACE */ \
case 0x2005: /* FOUR-PER-EM SPACE */ \
case 0x2006: /* SIX-PER-EM SPACE */ \
case 0x2007: /* FIGURE SPACE */ \
case 0x2008: /* PUNCTUATION SPACE */ \
case 0x2009: /* THIN SPACE */ \
case 0x200A: /* HAIR SPACE */ \
case 0x202f: /* NARROW NO-BREAK SPACE */ \
case 0x205f: /* MEDIUM MATHEMATICAL SPACE */ \
case 0x3000 /* IDEOGRAPHIC SPACE */
#define HSPACE_BYTE_CASES \
case CHAR_HT: \
case CHAR_SPACE: \
case CHAR_NBSP
#define HSPACE_CASES \
HSPACE_BYTE_CASES: \
HSPACE_MULTIBYTE_CASES
#define VSPACE_LIST \
CHAR_LF, CHAR_VT, CHAR_FF, CHAR_CR, CHAR_NEL, 0x2028, 0x2029, NOTACHAR
#define VSPACE_MULTIBYTE_CASES \
case 0x2028: /* LINE SEPARATOR */ \
case 0x2029 /* PARAGRAPH SEPARATOR */
#define VSPACE_BYTE_CASES \
case CHAR_LF: \
case CHAR_VT: \
case CHAR_FF: \
case CHAR_CR: \
case CHAR_NEL
#define VSPACE_CASES \
VSPACE_BYTE_CASES: \
VSPACE_MULTIBYTE_CASES
/* ------ EBCDIC environments ------ */
#else
#define HSPACE_LIST CHAR_HT, CHAR_SPACE, CHAR_NBSP, NOTACHAR
#define HSPACE_BYTE_CASES \
case CHAR_HT: \
case CHAR_SPACE: \
case CHAR_NBSP
#define HSPACE_CASES HSPACE_BYTE_CASES
#ifdef EBCDIC_NL25
#define VSPACE_LIST \
CHAR_VT, CHAR_FF, CHAR_CR, CHAR_NEL, CHAR_LF, NOTACHAR
#else
#define VSPACE_LIST \
CHAR_VT, CHAR_FF, CHAR_CR, CHAR_LF, CHAR_NEL, NOTACHAR
#endif
#define VSPACE_BYTE_CASES \
case CHAR_LF: \
case CHAR_VT: \
case CHAR_FF: \
case CHAR_CR: \
case CHAR_NEL
#define VSPACE_CASES VSPACE_BYTE_CASES
#endif /* EBCDIC */
/* ------ End of whitespace macros ------ */
/* Private flags containing information about the compiled regex. They used to
live at the top end of the options word, but that got almost full, so they were
moved to a 16-bit flags word - which got almost full, so now they are in a
32-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as the
restrictions on partial matching have been lifted. It remains for backwards
compatibility. */
#define PCRE_MODE8 0x00000001 /* compiled in 8 bit mode */
#define PCRE_MODE16 0x00000002 /* compiled in 16 bit mode */
#define PCRE_MODE32 0x00000004 /* compiled in 32 bit mode */
#define PCRE_FIRSTSET 0x00000010 /* first_char is set */
#define PCRE_FCH_CASELESS 0x00000020 /* caseless first char */
#define PCRE_REQCHSET 0x00000040 /* req_byte is set */
#define PCRE_RCH_CASELESS 0x00000080 /* caseless requested char */
#define PCRE_STARTLINE 0x00000100 /* start after \n for multiline */
#define PCRE_NOPARTIAL 0x00000200 /* can't use partial with this regex */
#define PCRE_JCHANGED 0x00000400 /* j option used in regex */
#define PCRE_HASCRORLF 0x00000800 /* explicit \r or \n in pattern */
#define PCRE_HASTHEN 0x00001000 /* pattern contains (*THEN) */
#define PCRE_MLSET 0x00002000 /* match limit set by regex */
#define PCRE_RLSET 0x00004000 /* recursion limit set by regex */
#define PCRE_MATCH_EMPTY 0x00008000 /* pattern can match empty string */
#if defined COMPILE_PCRE8
#define PCRE_MODE PCRE_MODE8
#elif defined COMPILE_PCRE16
#define PCRE_MODE PCRE_MODE16
#elif defined COMPILE_PCRE32
#define PCRE_MODE PCRE_MODE32
#endif
#define PCRE_MODE_MASK (PCRE_MODE8 | PCRE_MODE16 | PCRE_MODE32)
/* Flags for the "extra" block produced by pcre_study(). */
#define PCRE_STUDY_MAPPED 0x0001 /* a map of starting chars exists */
#define PCRE_STUDY_MINLEN 0x0002 /* a minimum length field exists */
/* Masks for identifying the public options that are permitted at compile
time, run time, or study time, respectively. */
#define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
PCRE_NEWLINE_ANYCRLF)
#define PUBLIC_COMPILE_OPTIONS \
(PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
PCRE_NO_AUTO_CAPTURE|PCRE_NO_AUTO_POSSESS| \
PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE|PCRE_NEVER_UTF)
#define PUBLIC_EXEC_OPTIONS \
(PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
#define PUBLIC_DFA_EXEC_OPTIONS \
(PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \
PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
PCRE_NO_START_OPTIMIZE)
#define PUBLIC_STUDY_OPTIONS \
(PCRE_STUDY_JIT_COMPILE|PCRE_STUDY_JIT_PARTIAL_SOFT_COMPILE| \
PCRE_STUDY_JIT_PARTIAL_HARD_COMPILE|PCRE_STUDY_EXTRA_NEEDED)
#define PUBLIC_JIT_EXEC_OPTIONS \
(PCRE_NO_UTF8_CHECK|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|\
PCRE_NOTEMPTY_ATSTART|PCRE_PARTIAL_SOFT|PCRE_PARTIAL_HARD)
/* Magic number to provide a small check against being handed junk. */
#define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
/* This variable is used to detect a loaded regular expression
in different endianness. */
#define REVERSED_MAGIC_NUMBER 0x45524350UL /* 'ERCP' */
/* The maximum remaining length of subject we are prepared to search for a
req_byte match. */
#define REQ_BYTE_MAX 1000
/* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
environments where these macros are defined elsewhere. Unfortunately, there
is no way to do the same for the typedef. */
typedef int BOOL;
#ifndef FALSE
#define FALSE 0
#define TRUE 1
#endif
/* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
character constants like '*' because the compiler would emit their EBCDIC code,
which is different from their ASCII/UTF-8 code. Instead we define macros for
the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
is enabled. When UTF-8 support is not enabled, the definitions use character
literals. Both character and string versions of each character are needed, and
there are some longer strings as well.
This means that, on EBCDIC platforms, the PCRE library can handle either
EBCDIC, or UTF-8, but not both. To support both in the same compiled library
would need different lookups depending on whether PCRE_UTF8 was set or not.
This would make it impossible to use characters in switch/case statements,
which would reduce performance. For a theoretical use (which nobody has asked
for) in a minority area (EBCDIC platforms), this is not sensible. Any
application that did need both could compile two versions of the library, using
macros to give the functions distinct names. */
#ifndef SUPPORT_UTF
/* UTF-8 support is not enabled; use the platform-dependent character literals
so that PCRE works in both ASCII and EBCDIC environments, but only in non-UTF
mode. Newline characters are problematic in EBCDIC. Though it has CR and LF
characters, a common practice has been to use its NL (0x15) character as the
line terminator in C-like processing environments. However, sometimes the LF
(0x25) character is used instead, according to this Unicode document:
http://unicode.org/standard/reports/tr13/tr13-5.html
PCRE defaults EBCDIC NL to 0x15, but has a build-time option to select 0x25
instead. Whichever is *not* chosen is defined as NEL.
In both ASCII and EBCDIC environments, CHAR_NL and CHAR_LF are synonyms for the
same code point. */
#ifdef EBCDIC
#ifndef EBCDIC_NL25
#define CHAR_NL '\x15'
#define CHAR_NEL '\x25'
#define STR_NL "\x15"
#define STR_NEL "\x25"
#else
#define CHAR_NL '\x25'
#define CHAR_NEL '\x15'
#define STR_NL "\x25"
#define STR_NEL "\x15"
#endif
#define CHAR_LF CHAR_NL
#define STR_LF STR_NL
#define CHAR_ESC '\047'
#define CHAR_DEL '\007'
#define CHAR_NBSP '\x41'
#define STR_ESC "\047"
#define STR_DEL "\007"
#else /* Not EBCDIC */
/* In ASCII/Unicode, linefeed is '\n' and we equate this to NL for
compatibility. NEL is the Unicode newline character; make sure it is
a positive value. */
#define CHAR_LF '\n'
#define CHAR_NL CHAR_LF
#define CHAR_NEL ((unsigned char)'\x85')
#define CHAR_ESC '\033'
#define CHAR_DEL '\177'
#define CHAR_NBSP ((unsigned char)'\xa0')
#define STR_LF "\n"
#define STR_NL STR_LF
#define STR_NEL "\x85"
#define STR_ESC "\033"
#define STR_DEL "\177"
#endif /* EBCDIC */
/* The remaining definitions work in both environments. */
#define CHAR_NULL '\0'
#define CHAR_HT '\t'
#define CHAR_VT '\v'
#define CHAR_FF '\f'
#define CHAR_CR '\r'
#define CHAR_BS '\b'
#define CHAR_BEL '\a'
#define CHAR_SPACE ' '
#define CHAR_EXCLAMATION_MARK '!'
#define CHAR_QUOTATION_MARK '"'
#define CHAR_NUMBER_SIGN '#'
#define CHAR_DOLLAR_SIGN '$'
#define CHAR_PERCENT_SIGN '%'
#define CHAR_AMPERSAND '&'
#define CHAR_APOSTROPHE '\''
#define CHAR_LEFT_PARENTHESIS '('
#define CHAR_RIGHT_PARENTHESIS ')'
#define CHAR_ASTERISK '*'
#define CHAR_PLUS '+'
#define CHAR_COMMA ','
#define CHAR_MINUS '-'
#define CHAR_DOT '.'
#define CHAR_SLASH '/'
#define CHAR_0 '0'
#define CHAR_1 '1'
#define CHAR_2 '2'
#define CHAR_3 '3'
#define CHAR_4 '4'
#define CHAR_5 '5'
#define CHAR_6 '6'
#define CHAR_7 '7'
#define CHAR_8 '8'
#define CHAR_9 '9'
#define CHAR_COLON ':'
#define CHAR_SEMICOLON ';'
#define CHAR_LESS_THAN_SIGN '<'
#define CHAR_EQUALS_SIGN '='
#define CHAR_GREATER_THAN_SIGN '>'
#define CHAR_QUESTION_MARK '?'
#define CHAR_COMMERCIAL_AT '@'
#define CHAR_A 'A'
#define CHAR_B 'B'
#define CHAR_C 'C'
#define CHAR_D 'D'
#define CHAR_E 'E'
#define CHAR_F 'F'
#define CHAR_G 'G'
#define CHAR_H 'H'
#define CHAR_I 'I'
#define CHAR_J 'J'
#define CHAR_K 'K'
#define CHAR_L 'L'
#define CHAR_M 'M'
#define CHAR_N 'N'
#define CHAR_O 'O'
#define CHAR_P 'P'
#define CHAR_Q 'Q'
#define CHAR_R 'R'
#define CHAR_S 'S'
#define CHAR_T 'T'
#define CHAR_U 'U'
#define CHAR_V 'V'
#define CHAR_W 'W'
#define CHAR_X 'X'
#define CHAR_Y 'Y'
#define CHAR_Z 'Z'
#define CHAR_LEFT_SQUARE_BRACKET '['
#define CHAR_BACKSLASH '\\'
#define CHAR_RIGHT_SQUARE_BRACKET ']'
#define CHAR_CIRCUMFLEX_ACCENT '^'
#define CHAR_UNDERSCORE '_'
#define CHAR_GRAVE_ACCENT '`'
#define CHAR_a 'a'
#define CHAR_b 'b'
#define CHAR_c 'c'
#define CHAR_d 'd'
#define CHAR_e 'e'
#define CHAR_f 'f'
#define CHAR_g 'g'
#define CHAR_h 'h'
#define CHAR_i 'i'
#define CHAR_j 'j'
#define CHAR_k 'k'
#define CHAR_l 'l'
#define CHAR_m 'm'
#define CHAR_n 'n'
#define CHAR_o 'o'
#define CHAR_p 'p'
#define CHAR_q 'q'
#define CHAR_r 'r'
#define CHAR_s 's'
#define CHAR_t 't'
#define CHAR_u 'u'
#define CHAR_v 'v'
#define CHAR_w 'w'
#define CHAR_x 'x'
#define CHAR_y 'y'
#define CHAR_z 'z'
#define CHAR_LEFT_CURLY_BRACKET '{'
#define CHAR_VERTICAL_LINE '|'
#define CHAR_RIGHT_CURLY_BRACKET '}'
#define CHAR_TILDE '~'
#define STR_HT "\t"
#define STR_VT "\v"
#define STR_FF "\f"
#define STR_CR "\r"
#define STR_BS "\b"
#define STR_BEL "\a"
#define STR_SPACE " "
#define STR_EXCLAMATION_MARK "!"
#define STR_QUOTATION_MARK "\""
#define STR_NUMBER_SIGN "#"
#define STR_DOLLAR_SIGN "$"
#define STR_PERCENT_SIGN "%"
#define STR_AMPERSAND "&"
#define STR_APOSTROPHE "'"
#define STR_LEFT_PARENTHESIS "("
#define STR_RIGHT_PARENTHESIS ")"
#define STR_ASTERISK "*"
#define STR_PLUS "+"
#define STR_COMMA ","
#define STR_MINUS "-"
#define STR_DOT "."
#define STR_SLASH "/"
#define STR_0 "0"
#define STR_1 "1"
#define STR_2 "2"
#define STR_3 "3"
#define STR_4 "4"
#define STR_5 "5"
#define STR_6 "6"
#define STR_7 "7"
#define STR_8 "8"
#define STR_9 "9"
#define STR_COLON ":"
#define STR_SEMICOLON ";"
#define STR_LESS_THAN_SIGN "<"
#define STR_EQUALS_SIGN "="
#define STR_GREATER_THAN_SIGN ">"
#define STR_QUESTION_MARK "?"
#define STR_COMMERCIAL_AT "@"
#define STR_A "A"
#define STR_B "B"
#define STR_C "C"
#define STR_D "D"
#define STR_E "E"
#define STR_F "F"
#define STR_G "G"
#define STR_H "H"
#define STR_I "I"
#define STR_J "J"
#define STR_K "K"
#define STR_L "L"
#define STR_M "M"
#define STR_N "N"
#define STR_O "O"
#define STR_P "P"
#define STR_Q "Q"
#define STR_R "R"
#define STR_S "S"
#define STR_T "T"
#define STR_U "U"
#define STR_V "V"
#define STR_W "W"
#define STR_X "X"
#define STR_Y "Y"
#define STR_Z "Z"
#define STR_LEFT_SQUARE_BRACKET "["
#define STR_BACKSLASH "\\"
#define STR_RIGHT_SQUARE_BRACKET "]"
#define STR_CIRCUMFLEX_ACCENT "^"
#define STR_UNDERSCORE "_"
#define STR_GRAVE_ACCENT "`"
#define STR_a "a"
#define STR_b "b"
#define STR_c "c"
#define STR_d "d"
#define STR_e "e"
#define STR_f "f"
#define STR_g "g"
#define STR_h "h"
#define STR_i "i"
#define STR_j "j"
#define STR_k "k"
#define STR_l "l"
#define STR_m "m"
#define STR_n "n"
#define STR_o "o"
#define STR_p "p"
#define STR_q "q"
#define STR_r "r"
#define STR_s "s"
#define STR_t "t"
#define STR_u "u"
#define STR_v "v"
#define STR_w "w"
#define STR_x "x"
#define STR_y "y"
#define STR_z "z"
#define STR_LEFT_CURLY_BRACKET "{"
#define STR_VERTICAL_LINE "|"
#define STR_RIGHT_CURLY_BRACKET "}"
#define STR_TILDE "~"
#define STRING_ACCEPT0 "ACCEPT\0"
#define STRING_COMMIT0 "COMMIT\0"
#define STRING_F0 "F\0"
#define STRING_FAIL0 "FAIL\0"
#define STRING_MARK0 "MARK\0"
#define STRING_PRUNE0 "PRUNE\0"
#define STRING_SKIP0 "SKIP\0"
#define STRING_THEN "THEN"
#define STRING_alpha0 "alpha\0"
#define STRING_lower0 "lower\0"
#define STRING_upper0 "upper\0"
#define STRING_alnum0 "alnum\0"
#define STRING_ascii0 "ascii\0"
#define STRING_blank0 "blank\0"
#define STRING_cntrl0 "cntrl\0"
#define STRING_digit0 "digit\0"
#define STRING_graph0 "graph\0"
#define STRING_print0 "print\0"
#define STRING_punct0 "punct\0"
#define STRING_space0 "space\0"
#define STRING_word0 "word\0"
#define STRING_xdigit "xdigit"
#define STRING_DEFINE "DEFINE"
#define STRING_WEIRD_STARTWORD "[:<:]]"
#define STRING_WEIRD_ENDWORD "[:>:]]"
#define STRING_CR_RIGHTPAR "CR)"
#define STRING_LF_RIGHTPAR "LF)"
#define STRING_CRLF_RIGHTPAR "CRLF)"
#define STRING_ANY_RIGHTPAR "ANY)"
#define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
#define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
#define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
#define STRING_UTF8_RIGHTPAR "UTF8)"
#define STRING_UTF16_RIGHTPAR "UTF16)"
#define STRING_UTF32_RIGHTPAR "UTF32)"
#define STRING_UTF_RIGHTPAR "UTF)"
#define STRING_UCP_RIGHTPAR "UCP)"
#define STRING_NO_AUTO_POSSESS_RIGHTPAR "NO_AUTO_POSSESS)"
#define STRING_NO_START_OPT_RIGHTPAR "NO_START_OPT)"
#define STRING_LIMIT_MATCH_EQ "LIMIT_MATCH="
#define STRING_LIMIT_RECURSION_EQ "LIMIT_RECURSION="
#else /* SUPPORT_UTF */
/* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
only. */
#define CHAR_HT '\011'
#define CHAR_VT '\013'
#define CHAR_FF '\014'
#define CHAR_CR '\015'
#define CHAR_LF '\012'
#define CHAR_NL CHAR_LF
#define CHAR_NEL ((unsigned char)'\x85')
#define CHAR_BS '\010'
#define CHAR_BEL '\007'
#define CHAR_ESC '\033'
#define CHAR_DEL '\177'
#define CHAR_NULL '\0'
#define CHAR_SPACE '\040'
#define CHAR_EXCLAMATION_MARK '\041'
#define CHAR_QUOTATION_MARK '\042'
#define CHAR_NUMBER_SIGN '\043'
#define CHAR_DOLLAR_SIGN '\044'
#define CHAR_PERCENT_SIGN '\045'
#define CHAR_AMPERSAND '\046'
#define CHAR_APOSTROPHE '\047'
#define CHAR_LEFT_PARENTHESIS '\050'
#define CHAR_RIGHT_PARENTHESIS '\051'
#define CHAR_ASTERISK '\052'
#define CHAR_PLUS '\053'
#define CHAR_COMMA '\054'
#define CHAR_MINUS '\055'
#define CHAR_DOT '\056'
#define CHAR_SLASH '\057'
#define CHAR_0 '\060'
#define CHAR_1 '\061'
#define CHAR_2 '\062'
#define CHAR_3 '\063'
#define CHAR_4 '\064'
#define CHAR_5 '\065'
#define CHAR_6 '\066'
#define CHAR_7 '\067'
#define CHAR_8 '\070'
#define CHAR_9 '\071'
#define CHAR_COLON '\072'
#define CHAR_SEMICOLON '\073'
#define CHAR_LESS_THAN_SIGN '\074'
#define CHAR_EQUALS_SIGN '\075'
#define CHAR_GREATER_THAN_SIGN '\076'
#define CHAR_QUESTION_MARK '\077'
#define CHAR_COMMERCIAL_AT '\100'
#define CHAR_A '\101'
#define CHAR_B '\102'
#define CHAR_C '\103'
#define CHAR_D '\104'
#define CHAR_E '\105'
#define CHAR_F '\106'
#define CHAR_G '\107'
#define CHAR_H '\110'
#define CHAR_I '\111'
#define CHAR_J '\112'
#define CHAR_K '\113'
#define CHAR_L '\114'
#define CHAR_M '\115'
#define CHAR_N '\116'
#define CHAR_O '\117'
#define CHAR_P '\120'
#define CHAR_Q '\121'
#define CHAR_R '\122'
#define CHAR_S '\123'
#define CHAR_T '\124'
#define CHAR_U '\125'
#define CHAR_V '\126'
#define CHAR_W '\127'
#define CHAR_X '\130'
#define CHAR_Y '\131'
#define CHAR_Z '\132'
#define CHAR_LEFT_SQUARE_BRACKET '\133'
#define CHAR_BACKSLASH '\134'
#define CHAR_RIGHT_SQUARE_BRACKET '\135'
#define CHAR_CIRCUMFLEX_ACCENT '\136'
#define CHAR_UNDERSCORE '\137'
#define CHAR_GRAVE_ACCENT '\140'
#define CHAR_a '\141'
#define CHAR_b '\142'
#define CHAR_c '\143'
#define CHAR_d '\144'
#define CHAR_e '\145'
#define CHAR_f '\146'
#define CHAR_g '\147'
#define CHAR_h '\150'
#define CHAR_i '\151'
#define CHAR_j '\152'
#define CHAR_k '\153'
#define CHAR_l '\154'
#define CHAR_m '\155'
#define CHAR_n '\156'
#define CHAR_o '\157'
#define CHAR_p '\160'
#define CHAR_q '\161'
#define CHAR_r '\162'
#define CHAR_s '\163'
#define CHAR_t '\164'
#define CHAR_u '\165'
#define CHAR_v '\166'
#define CHAR_w '\167'
#define CHAR_x '\170'
#define CHAR_y '\171'
#define CHAR_z '\172'
#define CHAR_LEFT_CURLY_BRACKET '\173'
#define CHAR_VERTICAL_LINE '\174'
#define CHAR_RIGHT_CURLY_BRACKET '\175'
#define CHAR_TILDE '\176'
#define CHAR_NBSP ((unsigned char)'\xa0')
#define STR_HT "\011"
#define STR_VT "\013"
#define STR_FF "\014"
#define STR_CR "\015"
#define STR_NL "\012"
#define STR_BS "\010"
#define STR_BEL "\007"
#define STR_ESC "\033"
#define STR_DEL "\177"
#define STR_SPACE "\040"
#define STR_EXCLAMATION_MARK "\041"
#define STR_QUOTATION_MARK "\042"
#define STR_NUMBER_SIGN "\043"
#define STR_DOLLAR_SIGN "\044"
#define STR_PERCENT_SIGN "\045"
#define STR_AMPERSAND "\046"
#define STR_APOSTROPHE "\047"
#define STR_LEFT_PARENTHESIS "\050"
#define STR_RIGHT_PARENTHESIS "\051"
#define STR_ASTERISK "\052"
#define STR_PLUS "\053"
#define STR_COMMA "\054"
#define STR_MINUS "\055"
#define STR_DOT "\056"
#define STR_SLASH "\057"
#define STR_0 "\060"
#define STR_1 "\061"
#define STR_2 "\062"
#define STR_3 "\063"
#define STR_4 "\064"
#define STR_5 "\065"
#define STR_6 "\066"
#define STR_7 "\067"
#define STR_8 "\070"
#define STR_9 "\071"
#define STR_COLON "\072"
#define STR_SEMICOLON "\073"
#define STR_LESS_THAN_SIGN "\074"
#define STR_EQUALS_SIGN "\075"
#define STR_GREATER_THAN_SIGN "\076"
#define STR_QUESTION_MARK "\077"
#define STR_COMMERCIAL_AT "\100"
#define STR_A "\101"
#define STR_B "\102"
#define STR_C "\103"
#define STR_D "\104"
#define STR_E "\105"
#define STR_F "\106"
#define STR_G "\107"
#define STR_H "\110"
#define STR_I "\111"
#define STR_J "\112"
#define STR_K "\113"
#define STR_L "\114"
#define STR_M "\115"
#define STR_N "\116"
#define STR_O "\117"
#define STR_P "\120"
#define STR_Q "\121"
#define STR_R "\122"
#define STR_S "\123"
#define STR_T "\124"
#define STR_U "\125"
#define STR_V "\126"
#define STR_W "\127"
#define STR_X "\130"
#define STR_Y "\131"
#define STR_Z "\132"
#define STR_LEFT_SQUARE_BRACKET "\133"
#define STR_BACKSLASH "\134"
#define STR_RIGHT_SQUARE_BRACKET "\135"
#define STR_CIRCUMFLEX_ACCENT "\136"
#define STR_UNDERSCORE "\137"
#define STR_GRAVE_ACCENT "\140"
#define STR_a "\141"
#define STR_b "\142"
#define STR_c "\143"
#define STR_d "\144"
#define STR_e "\145"
#define STR_f "\146"
#define STR_g "\147"
#define STR_h "\150"
#define STR_i "\151"
#define STR_j "\152"
#define STR_k "\153"
#define STR_l "\154"
#define STR_m "\155"
#define STR_n "\156"
#define STR_o "\157"
#define STR_p "\160"
#define STR_q "\161"
#define STR_r "\162"
#define STR_s "\163"
#define STR_t "\164"
#define STR_u "\165"
#define STR_v "\166"
#define STR_w "\167"
#define STR_x "\170"
#define STR_y "\171"
#define STR_z "\172"
#define STR_LEFT_CURLY_BRACKET "\173"
#define STR_VERTICAL_LINE "\174"
#define STR_RIGHT_CURLY_BRACKET "\175"
#define STR_TILDE "\176"
#define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0"
#define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0"
#define STRING_F0 STR_F "\0"
#define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0"
#define STRING_MARK0 STR_M STR_A STR_R STR_K "\0"
#define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0"
#define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0"
#define STRING_THEN STR_T STR_H STR_E STR_N
#define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0"
#define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0"
#define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0"
#define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0"
#define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0"
#define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0"
#define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0"
#define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0"
#define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0"
#define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0"
#define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0"
#define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0"
#define STRING_word0 STR_w STR_o STR_r STR_d "\0"
#define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
#define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
#define STRING_WEIRD_STARTWORD STR_LEFT_SQUARE_BRACKET STR_COLON STR_LESS_THAN_SIGN STR_COLON STR_RIGHT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET
#define STRING_WEIRD_ENDWORD STR_LEFT_SQUARE_BRACKET STR_COLON STR_GREATER_THAN_SIGN STR_COLON STR_RIGHT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET
#define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
#define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
#define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
#define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
#define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
#define STRING_BSR_ANYCRLF_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
#define STRING_BSR_UNICODE_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_U STR_N STR_I STR_C STR_O STR_D STR_E STR_RIGHT_PARENTHESIS
#define STRING_UTF8_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
#define STRING_UTF16_RIGHTPAR STR_U STR_T STR_F STR_1 STR_6 STR_RIGHT_PARENTHESIS
#define STRING_UTF32_RIGHTPAR STR_U STR_T STR_F STR_3 STR_2 STR_RIGHT_PARENTHESIS
#define STRING_UTF_RIGHTPAR STR_U STR_T STR_F STR_RIGHT_PARENTHESIS
#define STRING_UCP_RIGHTPAR STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
#define STRING_NO_AUTO_POSSESS_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_A STR_U STR_T STR_O STR_UNDERSCORE STR_P STR_O STR_S STR_S STR_E STR_S STR_S STR_RIGHT_PARENTHESIS
#define STRING_NO_START_OPT_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_S STR_T STR_A STR_R STR_T STR_UNDERSCORE STR_O STR_P STR_T STR_RIGHT_PARENTHESIS
#define STRING_LIMIT_MATCH_EQ STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_M STR_A STR_T STR_C STR_H STR_EQUALS_SIGN
#define STRING_LIMIT_RECURSION_EQ STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_R STR_E STR_C STR_U STR_R STR_S STR_I STR_O STR_N STR_EQUALS_SIGN
#endif /* SUPPORT_UTF */
/* Escape items that are just an encoding of a particular data value. */
#ifndef ESC_a
#define ESC_a CHAR_BEL
#endif
#ifndef ESC_e
#define ESC_e CHAR_ESC
#endif
#ifndef ESC_f
#define ESC_f CHAR_FF
#endif
#ifndef ESC_n
#define ESC_n CHAR_LF
#endif
#ifndef ESC_r
#define ESC_r CHAR_CR
#endif
/* We can't officially use ESC_t because it is a POSIX reserved identifier
(presumably because of all the others like size_t). */
#ifndef ESC_tee
#define ESC_tee CHAR_HT
#endif
/* Codes for different types of Unicode property */
#define PT_ANY 0 /* Any property - matches all chars */
#define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
#define PT_GC 2 /* Specified general characteristic (e.g. L) */
#define PT_PC 3 /* Specified particular characteristic (e.g. Lu) */
#define PT_SC 4 /* Script (e.g. Han) */
#define PT_ALNUM 5 /* Alphanumeric - the union of L and N */
#define PT_SPACE 6 /* Perl space - Z plus 9,10,12,13 */
#define PT_PXSPACE 7 /* POSIX space - Z plus 9,10,11,12,13 */
#define PT_WORD 8 /* Word - L plus N plus underscore */
#define PT_CLIST 9 /* Pseudo-property: match character list */
#define PT_UCNC 10 /* Universal Character nameable character */
#define PT_TABSIZE 11 /* Size of square table for autopossessify tests */
/* The following special properties are used only in XCLASS items, when POSIX
classes are specified and PCRE_UCP is set - in other words, for Unicode
handling of these classes. They are not available via the \p or \P escapes like
those in the above list, and so they do not take part in the autopossessifying
table. */
#define PT_PXGRAPH 11 /* [:graph:] - characters that mark the paper */
#define PT_PXPRINT 12 /* [:print:] - [:graph:] plus non-control spaces */
#define PT_PXPUNCT 13 /* [:punct:] - punctuation characters */
/* Flag bits and data types for the extended class (OP_XCLASS) for classes that
contain characters with values greater than 255. */
#define XCL_NOT 0x01 /* Flag: this is a negative class */
#define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
#define XCL_HASPROP 0x04 /* Flag: property checks are present. */
#define XCL_END 0 /* Marks end of individual items */
#define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
#define XCL_RANGE 2 /* A range (two multibyte chars) follows */
#define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
#define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
/* These are escaped items that aren't just an encoding of a particular data
value such as \n. They must have non-zero values, as check_escape() returns 0
for a data character. Also, they must appear in the same order as in the
opcode definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
corresponds to "." in DOTALL mode rather than an escape sequence. It is also
used for [^] in JavaScript compatibility mode, and for \C in non-utf mode. In
non-DOTALL mode, "." behaves like \N.
The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc.
when PCRE_UCP is set and replacement of \d etc by \p sequences is required.
They must be contiguous, and remain in order so that the replacements can be
looked up from a table.
Negative numbers are used to encode a backreference (\1, \2, \3, etc.) in
check_escape(). There are two tests in the code for an escape
greater than ESC_b and less than ESC_Z to detect the types that may be
repeated. These are the types that consume characters. If any new escapes are
put in between that don't consume a character, that code will have to change.
*/
enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z,
ESC_E, ESC_Q, ESC_g, ESC_k,
ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu };
/********************** Opcode definitions ******************/
/****** NOTE NOTE NOTE ******
Starting from 1 (i.e. after OP_END), the values up to OP_EOD must correspond in
order to the list of escapes immediately above. Furthermore, values up to
OP_DOLLM must not be changed without adjusting the table called autoposstab in
pcre_compile.c
Whenever this list is updated, the two macro definitions that follow must be
updated to match. The possessification table called "opcode_possessify" in
pcre_compile.c must also be updated, and also the tables called "coptable"
and "poptable" in pcre_dfa_exec.c.
****** NOTE NOTE NOTE ******/
/* The values between FIRST_AUTOTAB_OP and LAST_AUTOTAB_RIGHT_OP, inclusive,
are used in a table for deciding whether a repeated character type can be
auto-possessified. */
#define FIRST_AUTOTAB_OP OP_NOT_DIGIT
#define LAST_AUTOTAB_LEFT_OP OP_EXTUNI
#define LAST_AUTOTAB_RIGHT_OP OP_DOLLM
enum {
OP_END, /* 0 End of pattern */
/* Values corresponding to backslashed metacharacters */
OP_SOD, /* 1 Start of data: \A */
OP_SOM, /* 2 Start of match (subject + offset): \G */
OP_SET_SOM, /* 3 Set start of match (\K) */
OP_NOT_WORD_BOUNDARY, /* 4 \B */
OP_WORD_BOUNDARY, /* 5 \b */
OP_NOT_DIGIT, /* 6 \D */
OP_DIGIT, /* 7 \d */
OP_NOT_WHITESPACE, /* 8 \S */
OP_WHITESPACE, /* 9 \s */
OP_NOT_WORDCHAR, /* 10 \W */
OP_WORDCHAR, /* 11 \w */
OP_ANY, /* 12 Match any character except newline (\N) */
OP_ALLANY, /* 13 Match any character */
OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
OP_NOTPROP, /* 15 \P (not Unicode property) */
OP_PROP, /* 16 \p (Unicode property) */
OP_ANYNL, /* 17 \R (any newline sequence) */
OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */
OP_HSPACE, /* 19 \h (horizontal whitespace) */
OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */
OP_VSPACE, /* 21 \v (vertical whitespace) */
OP_EXTUNI, /* 22 \X (extended Unicode sequence */
OP_EODN, /* 23 End of data or \n at end of data (\Z) */
OP_EOD, /* 24 End of data (\z) */
/* Line end assertions */
OP_DOLL, /* 25 End of line - not multiline */
OP_DOLLM, /* 26 End of line - multiline */
OP_CIRC, /* 27 Start of line - not multiline */
OP_CIRCM, /* 28 Start of line - multiline */
/* Single characters; caseful must precede the caseless ones */
OP_CHAR, /* 29 Match one character, casefully */
OP_CHARI, /* 30 Match one character, caselessly */
OP_NOT, /* 31 Match one character, not the given one, casefully */
OP_NOTI, /* 32 Match one character, not the given one, caselessly */
/* The following sets of 13 opcodes must always be kept in step because
the offset from the first one is used to generate the others. */
/* Repeated characters; caseful must precede the caseless ones */
OP_STAR, /* 33 The maximizing and minimizing versions of */
OP_MINSTAR, /* 34 these six opcodes must come in pairs, with */
OP_PLUS, /* 35 the minimizing one second. */
OP_MINPLUS, /* 36 */
OP_QUERY, /* 37 */
OP_MINQUERY, /* 38 */
OP_UPTO, /* 39 From 0 to n matches of one character, caseful*/
OP_MINUPTO, /* 40 */
OP_EXACT, /* 41 Exactly n matches */
OP_POSSTAR, /* 42 Possessified star, caseful */
OP_POSPLUS, /* 43 Possessified plus, caseful */
OP_POSQUERY, /* 44 Posesssified query, caseful */
OP_POSUPTO, /* 45 Possessified upto, caseful */
/* Repeated characters; caseless must follow the caseful ones */
OP_STARI, /* 46 */
OP_MINSTARI, /* 47 */
OP_PLUSI, /* 48 */
OP_MINPLUSI, /* 49 */
OP_QUERYI, /* 50 */
OP_MINQUERYI, /* 51 */
OP_UPTOI, /* 52 From 0 to n matches of one character, caseless */
OP_MINUPTOI, /* 53 */
OP_EXACTI, /* 54 */
OP_POSSTARI, /* 55 Possessified star, caseless */
OP_POSPLUSI, /* 56 Possessified plus, caseless */
OP_POSQUERYI, /* 57 Posesssified query, caseless */
OP_POSUPTOI, /* 58 Possessified upto, caseless */
/* The negated ones must follow the non-negated ones, and match them */
/* Negated repeated character, caseful; must precede the caseless ones */
OP_NOTSTAR, /* 59 The maximizing and minimizing versions of */
OP_NOTMINSTAR, /* 60 these six opcodes must come in pairs, with */
OP_NOTPLUS, /* 61 the minimizing one second. They must be in */
OP_NOTMINPLUS, /* 62 exactly the same order as those above. */
OP_NOTQUERY, /* 63 */
OP_NOTMINQUERY, /* 64 */
OP_NOTUPTO, /* 65 From 0 to n matches, caseful */
OP_NOTMINUPTO, /* 66 */
OP_NOTEXACT, /* 67 Exactly n matches */
OP_NOTPOSSTAR, /* 68 Possessified versions, caseful */
OP_NOTPOSPLUS, /* 69 */
OP_NOTPOSQUERY, /* 70 */
OP_NOTPOSUPTO, /* 71 */
/* Negated repeated character, caseless; must follow the caseful ones */
OP_NOTSTARI, /* 72 */
OP_NOTMINSTARI, /* 73 */
OP_NOTPLUSI, /* 74 */
OP_NOTMINPLUSI, /* 75 */
OP_NOTQUERYI, /* 76 */
OP_NOTMINQUERYI, /* 77 */
OP_NOTUPTOI, /* 78 From 0 to n matches, caseless */
OP_NOTMINUPTOI, /* 79 */
OP_NOTEXACTI, /* 80 Exactly n matches */
OP_NOTPOSSTARI, /* 81 Possessified versions, caseless */
OP_NOTPOSPLUSI, /* 82 */
OP_NOTPOSQUERYI, /* 83 */
OP_NOTPOSUPTOI, /* 84 */
/* Character types */
OP_TYPESTAR, /* 85 The maximizing and minimizing versions of */
OP_TYPEMINSTAR, /* 86 these six opcodes must come in pairs, with */
OP_TYPEPLUS, /* 87 the minimizing one second. These codes must */
OP_TYPEMINPLUS, /* 88 be in exactly the same order as those above. */
OP_TYPEQUERY, /* 89 */
OP_TYPEMINQUERY, /* 90 */
OP_TYPEUPTO, /* 91 From 0 to n matches */
OP_TYPEMINUPTO, /* 92 */
OP_TYPEEXACT, /* 93 Exactly n matches */
OP_TYPEPOSSTAR, /* 94 Possessified versions */
OP_TYPEPOSPLUS, /* 95 */
OP_TYPEPOSQUERY, /* 96 */
OP_TYPEPOSUPTO, /* 97 */
/* These are used for character classes and back references; only the
first six are the same as the sets above. */
OP_CRSTAR, /* 98 The maximizing and minimizing versions of */
OP_CRMINSTAR, /* 99 all these opcodes must come in pairs, with */
OP_CRPLUS, /* 100 the minimizing one second. These codes must */
OP_CRMINPLUS, /* 101 be in exactly the same order as those above. */
OP_CRQUERY, /* 102 */
OP_CRMINQUERY, /* 103 */
OP_CRRANGE, /* 104 These are different to the three sets above. */
OP_CRMINRANGE, /* 105 */
OP_CRPOSSTAR, /* 106 Possessified versions */
OP_CRPOSPLUS, /* 107 */
OP_CRPOSQUERY, /* 108 */
OP_CRPOSRANGE, /* 109 */
/* End of quantifier opcodes */
OP_CLASS, /* 110 Match a character class, chars < 256 only */
OP_NCLASS, /* 111 Same, but the bitmap was created from a negative
class - the difference is relevant only when a
character > 255 is encountered. */
OP_XCLASS, /* 112 Extended class for handling > 255 chars within the
class. This does both positive and negative. */
OP_REF, /* 113 Match a back reference, casefully */
OP_REFI, /* 114 Match a back reference, caselessly */
OP_DNREF, /* 115 Match a duplicate name backref, casefully */
OP_DNREFI, /* 116 Match a duplicate name backref, caselessly */
OP_RECURSE, /* 117 Match a numbered subpattern (possibly recursive) */
OP_CALLOUT, /* 118 Call out to external function if provided */
OP_ALT, /* 119 Start of alternation */
OP_KET, /* 120 End of group that doesn't have an unbounded repeat */
OP_KETRMAX, /* 121 These two must remain together and in this */
OP_KETRMIN, /* 122 order. They are for groups the repeat for ever. */
OP_KETRPOS, /* 123 Possessive unlimited repeat. */
/* The assertions must come before BRA, CBRA, ONCE, and COND, and the four
asserts must remain in order. */
OP_REVERSE, /* 124 Move pointer back - used in lookbehind assertions */
OP_ASSERT, /* 125 Positive lookahead */
OP_ASSERT_NOT, /* 126 Negative lookahead */
OP_ASSERTBACK, /* 127 Positive lookbehind */
OP_ASSERTBACK_NOT, /* 128 Negative lookbehind */
/* ONCE, ONCE_NC, BRA, BRAPOS, CBRA, CBRAPOS, and COND must come immediately
after the assertions, with ONCE first, as there's a test for >= ONCE for a
subpattern that isn't an assertion. The POS versions must immediately follow
the non-POS versions in each case. */
OP_ONCE, /* 129 Atomic group, contains captures */
OP_ONCE_NC, /* 130 Atomic group containing no captures */
OP_BRA, /* 131 Start of non-capturing bracket */
OP_BRAPOS, /* 132 Ditto, with unlimited, possessive repeat */
OP_CBRA, /* 133 Start of capturing bracket */
OP_CBRAPOS, /* 134 Ditto, with unlimited, possessive repeat */
OP_COND, /* 135 Conditional group */
/* These five must follow the previous five, in the same order. There's a
check for >= SBRA to distinguish the two sets. */
OP_SBRA, /* 136 Start of non-capturing bracket, check empty */
OP_SBRAPOS, /* 137 Ditto, with unlimited, possessive repeat */
OP_SCBRA, /* 138 Start of capturing bracket, check empty */
OP_SCBRAPOS, /* 139 Ditto, with unlimited, possessive repeat */
OP_SCOND, /* 140 Conditional group, check empty */
/* The next two pairs must (respectively) be kept together. */
OP_CREF, /* 141 Used to hold a capture number as condition */
OP_DNCREF, /* 142 Used to point to duplicate names as a condition */
OP_RREF, /* 143 Used to hold a recursion number as condition */
OP_DNRREF, /* 144 Used to point to duplicate names as a condition */
OP_DEF, /* 145 The DEFINE condition */
OP_BRAZERO, /* 146 These two must remain together and in this */
OP_BRAMINZERO, /* 147 order. */
OP_BRAPOSZERO, /* 148 */
/* These are backtracking control verbs */
OP_MARK, /* 149 always has an argument */
OP_PRUNE, /* 150 */
OP_PRUNE_ARG, /* 151 same, but with argument */
OP_SKIP, /* 152 */
OP_SKIP_ARG, /* 153 same, but with argument */
OP_THEN, /* 154 */
OP_THEN_ARG, /* 155 same, but with argument */
OP_COMMIT, /* 156 */
/* These are forced failure and success verbs */
OP_FAIL, /* 157 */
OP_ACCEPT, /* 158 */
OP_ASSERT_ACCEPT, /* 159 Used inside assertions */
OP_CLOSE, /* 160 Used before OP_ACCEPT to close open captures */
/* This is used to skip a subpattern with a {0} quantifier */
OP_SKIPZERO, /* 161 */
/* This is not an opcode, but is used to check that tables indexed by opcode
are the correct length, in order to catch updating errors - there have been
some in the past. */
OP_TABLE_LENGTH
};
/* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
definitions that follow must also be updated to match. There are also tables
called "opcode_possessify" in pcre_compile.c and "coptable" and "poptable" in
pcre_dfa_exec.c that must be updated. */
/* This macro defines textual names for all the opcodes. These are used only
for debugging, and some of them are only partial names. The macro is referenced
only in pcre_printint.c, which fills out the full names in many cases (and in
some cases doesn't actually use these names at all). */
#define OP_NAME_LIST \
"End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
"\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
"notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
"extuni", "\\Z", "\\z", \
"$", "$", "^", "^", "char", "chari", "not", "noti", \
"*", "*?", "+", "+?", "?", "??", \
"{", "{", "{", \
"*+","++", "?+", "{", \
"*", "*?", "+", "+?", "?", "??", \
"{", "{", "{", \
"*+","++", "?+", "{", \
"*", "*?", "+", "+?", "?", "??", \
"{", "{", "{", \
"*+","++", "?+", "{", \
"*", "*?", "+", "+?", "?", "??", \
"{", "{", "{", \
"*+","++", "?+", "{", \
"*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
"*+","++", "?+", "{", \
"*", "*?", "+", "+?", "?", "??", "{", "{", \
"*+","++", "?+", "{", \
"class", "nclass", "xclass", "Ref", "Refi", "DnRef", "DnRefi", \
"Recurse", "Callout", \
"Alt", "Ket", "KetRmax", "KetRmin", "KetRpos", \
"Reverse", "Assert", "Assert not", "AssertB", "AssertB not", \
"Once", "Once_NC", \
"Bra", "BraPos", "CBra", "CBraPos", \
"Cond", \
"SBra", "SBraPos", "SCBra", "SCBraPos", \
"SCond", \
"Cond ref", "Cond dnref", "Cond rec", "Cond dnrec", "Cond def", \
"Brazero", "Braminzero", "Braposzero", \
"*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP", \
"*THEN", "*THEN", "*COMMIT", "*FAIL", \
"*ACCEPT", "*ASSERT_ACCEPT", \
"Close", "Skip zero"
/* This macro defines the length of fixed length operations in the compiled
regex. The lengths are used when searching for specific things, and also in the
debugging printing of a compiled regex. We use a macro so that it can be
defined close to the definitions of the opcodes themselves.
As things have been extended, some of these are no longer fixed lenths, but are
minima instead. For example, the length of a single-character repeat may vary
in UTF-8 mode. The code that uses this table must know about such things. */
#define OP_LENGTHS \
1, /* End */ \
1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
1, 1, 1, /* Any, AllAny, Anybyte */ \
3, 3, /* \P, \p */ \
1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
1, /* \X */ \
1, 1, 1, 1, 1, 1, /* \Z, \z, $, $M ^, ^M */ \
2, /* Char - the minimum length */ \
2, /* Chari - the minimum length */ \
2, /* not */ \
2, /* noti */ \
/* Positive single-char repeats ** These are */ \
2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
2+IMM2_SIZE, 2+IMM2_SIZE, /* upto, minupto ** mode */ \
2+IMM2_SIZE, /* exact */ \
2, 2, 2, 2+IMM2_SIZE, /* *+, ++, ?+, upto+ */ \
2, 2, 2, 2, 2, 2, /* *I, *?I, +I, +?I, ?I, ??I ** UTF-8 */ \
2+IMM2_SIZE, 2+IMM2_SIZE, /* upto I, minupto I */ \
2+IMM2_SIZE, /* exact I */ \
2, 2, 2, 2+IMM2_SIZE, /* *+I, ++I, ?+I, upto+I */ \
/* Negative single-char repeats - only for chars < 256 */ \
2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
2+IMM2_SIZE, 2+IMM2_SIZE, /* NOT upto, minupto */ \
2+IMM2_SIZE, /* NOT exact */ \
2, 2, 2, 2+IMM2_SIZE, /* Possessive NOT *, +, ?, upto */ \
2, 2, 2, 2, 2, 2, /* NOT *I, *?I, +I, +?I, ?I, ??I */ \
2+IMM2_SIZE, 2+IMM2_SIZE, /* NOT upto I, minupto I */ \
2+IMM2_SIZE, /* NOT exact I */ \
2, 2, 2, 2+IMM2_SIZE, /* Possessive NOT *I, +I, ?I, upto I */ \
/* Positive type repeats */ \
2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
2+IMM2_SIZE, 2+IMM2_SIZE, /* Type upto, minupto */ \
2+IMM2_SIZE, /* Type exact */ \
2, 2, 2, 2+IMM2_SIZE, /* Possessive *+, ++, ?+, upto+ */ \
/* Character class & ref repeats */ \
1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
1+2*IMM2_SIZE, 1+2*IMM2_SIZE, /* CRRANGE, CRMINRANGE */ \
1, 1, 1, 1+2*IMM2_SIZE, /* Possessive *+, ++, ?+, CRPOSRANGE */ \
1+(32/sizeof(pcre_uchar)), /* CLASS */ \
1+(32/sizeof(pcre_uchar)), /* NCLASS */ \
0, /* XCLASS - variable length */ \
1+IMM2_SIZE, /* REF */ \
1+IMM2_SIZE, /* REFI */ \
1+2*IMM2_SIZE, /* DNREF */ \
1+2*IMM2_SIZE, /* DNREFI */ \
1+LINK_SIZE, /* RECURSE */ \
2+2*LINK_SIZE, /* CALLOUT */ \
1+LINK_SIZE, /* Alt */ \
1+LINK_SIZE, /* Ket */ \
1+LINK_SIZE, /* KetRmax */ \
1+LINK_SIZE, /* KetRmin */ \
1+LINK_SIZE, /* KetRpos */ \
1+LINK_SIZE, /* Reverse */ \
1+LINK_SIZE, /* Assert */ \
1+LINK_SIZE, /* Assert not */ \
1+LINK_SIZE, /* Assert behind */ \
1+LINK_SIZE, /* Assert behind not */ \
1+LINK_SIZE, /* ONCE */ \
1+LINK_SIZE, /* ONCE_NC */ \
1+LINK_SIZE, /* BRA */ \
1+LINK_SIZE, /* BRAPOS */ \
1+LINK_SIZE+IMM2_SIZE, /* CBRA */ \
1+LINK_SIZE+IMM2_SIZE, /* CBRAPOS */ \
1+LINK_SIZE, /* COND */ \
1+LINK_SIZE, /* SBRA */ \
1+LINK_SIZE, /* SBRAPOS */ \
1+LINK_SIZE+IMM2_SIZE, /* SCBRA */ \
1+LINK_SIZE+IMM2_SIZE, /* SCBRAPOS */ \
1+LINK_SIZE, /* SCOND */ \
1+IMM2_SIZE, 1+2*IMM2_SIZE, /* CREF, DNCREF */ \
1+IMM2_SIZE, 1+2*IMM2_SIZE, /* RREF, DNRREF */ \
1, /* DEF */ \
1, 1, 1, /* BRAZERO, BRAMINZERO, BRAPOSZERO */ \
3, 1, 3, /* MARK, PRUNE, PRUNE_ARG */ \
1, 3, /* SKIP, SKIP_ARG */ \
1, 3, /* THEN, THEN_ARG */ \
1, 1, 1, 1, /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT */ \
1+IMM2_SIZE, 1 /* CLOSE, SKIPZERO */
/* A magic value for OP_RREF to indicate the "any recursion" condition. */
#define RREF_ANY 0xffff
/* Compile time error code numbers. They are given names so that they can more
easily be tracked. When a new number is added, the table called eint in
pcreposix.c must be updated. */
enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69,
ERR70, ERR71, ERR72, ERR73, ERR74, ERR75, ERR76, ERR77, ERR78, ERR79,
ERR80, ERR81, ERR82, ERR83, ERR84, ERR85, ERR86, ERR87, ERRCOUNT };
/* JIT compiling modes. The function list is indexed by them. */
enum { JIT_COMPILE, JIT_PARTIAL_SOFT_COMPILE, JIT_PARTIAL_HARD_COMPILE,
JIT_NUMBER_OF_COMPILE_MODES };
/* The real format of the start of the pcre block; the index of names and the
code vector run on as long as necessary after the end. We store an explicit
offset to the name table so that if a regex is compiled on one host, saved, and
then run on another where the size of pointers is different, all might still
be well.
The size of the structure must be a multiple of 8 bytes. For the case of
compiled-on-4 and run-on-8, we include an extra pointer that is always NULL so
that there are an even number of pointers which therefore are a multiple of 8
bytes.
It is necessary to fork the struct for the 32 bit library, since it needs to
use pcre_uint32 for first_char and req_char. We can't put an ifdef inside the
typedef because pcretest needs access to the struct of the 8-, 16- and 32-bit
variants.
*** WARNING ***
When new fields are added to these structures, remember to adjust the code in
pcre_byte_order.c that is concerned with swapping the byte order of the fields
when a compiled regex is reloaded on a host with different endianness.
*** WARNING ***
There is also similar byte-flipping code in pcretest.c, which is used for
testing the byte-flipping features. It must also be kept in step.
*** WARNING ***
*/
typedef struct real_pcre8_or_16 {
pcre_uint32 magic_number;
pcre_uint32 size; /* Total that was malloced */
pcre_uint32 options; /* Public options */
pcre_uint32 flags; /* Private flags */
pcre_uint32 limit_match; /* Limit set from regex */
pcre_uint32 limit_recursion; /* Limit set from regex */
pcre_uint16 first_char; /* Starting character */
pcre_uint16 req_char; /* This character must be seen */
pcre_uint16 max_lookbehind; /* Longest lookbehind (characters) */
pcre_uint16 top_bracket; /* Highest numbered group */
pcre_uint16 top_backref; /* Highest numbered back reference */
pcre_uint16 name_table_offset; /* Offset to name table that follows */
pcre_uint16 name_entry_size; /* Size of any name items */
pcre_uint16 name_count; /* Number of name items */
pcre_uint16 ref_count; /* Reference count */
pcre_uint16 dummy1; /* To ensure size is a multiple of 8 */
pcre_uint16 dummy2; /* To ensure size is a multiple of 8 */
pcre_uint16 dummy3; /* To ensure size is a multiple of 8 */
const pcre_uint8 *tables; /* Pointer to tables or NULL for std */
void *nullpad; /* NULL padding */
} real_pcre8_or_16;
typedef struct real_pcre8_or_16 real_pcre;
typedef struct real_pcre8_or_16 real_pcre16;
typedef struct real_pcre32 {
pcre_uint32 magic_number;
pcre_uint32 size; /* Total that was malloced */
pcre_uint32 options; /* Public options */
pcre_uint32 flags; /* Private flags */
pcre_uint32 limit_match; /* Limit set from regex */
pcre_uint32 limit_recursion; /* Limit set from regex */
pcre_uint32 first_char; /* Starting character */
pcre_uint32 req_char; /* This character must be seen */
pcre_uint16 max_lookbehind; /* Longest lookbehind (characters) */
pcre_uint16 top_bracket; /* Highest numbered group */
pcre_uint16 top_backref; /* Highest numbered back reference */
pcre_uint16 name_table_offset; /* Offset to name table that follows */
pcre_uint16 name_entry_size; /* Size of any name items */
pcre_uint16 name_count; /* Number of name items */
pcre_uint16 ref_count; /* Reference count */
pcre_uint16 dummy; /* To ensure size is a multiple of 8 */
const pcre_uint8 *tables; /* Pointer to tables or NULL for std */
void *nullpad; /* NULL padding */
} real_pcre32;
#if defined COMPILE_PCRE8
#define REAL_PCRE real_pcre
#elif defined COMPILE_PCRE16
#define REAL_PCRE real_pcre16
#elif defined COMPILE_PCRE32
#define REAL_PCRE real_pcre32
#endif
/* Assert that the size of REAL_PCRE is divisible by 8 */
typedef int __assert_real_pcre_size_divisible_8[(sizeof(REAL_PCRE) % 8) == 0 ? 1 : -1];
/* Needed in pcretest to access some fields in the real_pcre* structures
* directly. They're unified for 8/16/32 bits since the structs only differ
* after these fields; if that ever changes, need to fork those defines into
* 8/16 and 32 bit versions. */
#define REAL_PCRE_MAGIC(re) (((REAL_PCRE*)re)->magic_number)
#define REAL_PCRE_SIZE(re) (((REAL_PCRE*)re)->size)
#define REAL_PCRE_OPTIONS(re) (((REAL_PCRE*)re)->options)
#define REAL_PCRE_FLAGS(re) (((REAL_PCRE*)re)->flags)
/* The format of the block used to store data from pcre_study(). The same
remark (see NOTE above) about extending this structure applies. */
typedef struct pcre_study_data {
pcre_uint32 size; /* Total that was malloced */
pcre_uint32 flags; /* Private flags */
pcre_uint8 start_bits[32]; /* Starting char bits */
pcre_uint32 minlength; /* Minimum subject length */
} pcre_study_data;
/* Structure for building a chain of open capturing subpatterns during
compiling, so that instructions to close them can be compiled when (*ACCEPT) is
encountered. This is also used to identify subpatterns that contain recursive
back references to themselves, so that they can be made atomic. */
typedef struct open_capitem {
struct open_capitem *next; /* Chain link */
pcre_uint16 number; /* Capture number */
pcre_uint16 flag; /* Set TRUE if recursive back ref */
} open_capitem;
/* Structure for building a list of named groups during the first pass of
compiling. */
typedef struct named_group {
const pcre_uchar *name; /* Points to the name in the pattern */
int length; /* Length of the name */
pcre_uint32 number; /* Group number */
} named_group;
/* Structure for passing "static" information around between the functions
doing the compiling, so that they are thread-safe. */
typedef struct compile_data {
const pcre_uint8 *lcc; /* Points to lower casing table */
const pcre_uint8 *fcc; /* Points to case-flipping table */
const pcre_uint8 *cbits; /* Points to character type table */
const pcre_uint8 *ctypes; /* Points to table of type maps */
const pcre_uchar *start_workspace;/* The start of working space */
const pcre_uchar *start_code; /* The start of the compiled code */
const pcre_uchar *start_pattern; /* The start of the pattern */
const pcre_uchar *end_pattern; /* The end of the pattern */
pcre_uchar *hwm; /* High watermark of workspace */
open_capitem *open_caps; /* Chain of open capture items */
named_group *named_groups; /* Points to vector in pre-compile */
pcre_uchar *name_table; /* The name/number table */
int names_found; /* Number of entries so far */
int name_entry_size; /* Size of each entry */
int named_group_list_size; /* Number of entries in the list */
int workspace_size; /* Size of workspace */
unsigned int bracount; /* Count of capturing parens as we compile */
int final_bracount; /* Saved value after first pass */
int max_lookbehind; /* Maximum lookbehind (characters) */
int top_backref; /* Maximum back reference */
unsigned int backref_map; /* Bitmap of low back refs */
unsigned int namedrefcount; /* Number of backreferences by name */
int parens_depth; /* Depth of nested parentheses */
int assert_depth; /* Depth of nested assertions */
pcre_uint32 external_options; /* External (initial) options */
pcre_uint32 external_flags; /* External flag bits to be set */
int req_varyopt; /* "After variable item" flag for reqbyte */
BOOL had_accept; /* (*ACCEPT) encountered */
BOOL had_pruneorskip; /* (*PRUNE) or (*SKIP) encountered */
BOOL check_lookbehind; /* Lookbehinds need later checking */
BOOL dupnames; /* Duplicate names exist */
BOOL dupgroups; /* Duplicate groups exist: (?| found */
BOOL iscondassert; /* Next assert is a condition */
int nltype; /* Newline type */
int nllen; /* Newline string length */
pcre_uchar nl[4]; /* Newline string when fixed length */
} compile_data;
/* Structure for maintaining a chain of pointers to the currently incomplete
branches, for testing for left recursion while compiling. */
typedef struct branch_chain {
struct branch_chain *outer;
pcre_uchar *current_branch;
} branch_chain;
/* Structure for mutual recursion detection. */
typedef struct recurse_check {
struct recurse_check *prev;
const pcre_uchar *group;
} recurse_check;
/* Structure for items in a linked list that represents an explicit recursive
call within the pattern; used by pcre_exec(). */
typedef struct recursion_info {
struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
unsigned int group_num; /* Number of group that was called */
int *offset_save; /* Pointer to start of saved offsets */
int saved_max; /* Number of saved offsets */
int saved_capture_last; /* Last capture number */
PCRE_PUCHAR subject_position; /* Position at start of recursion */
} recursion_info;
/* A similar structure for pcre_dfa_exec(). */
typedef struct dfa_recursion_info {
struct dfa_recursion_info *prevrec;
int group_num;
PCRE_PUCHAR subject_position;
} dfa_recursion_info;
/* Structure for building a chain of data for holding the values of the subject
pointer at the start of each subpattern, so as to detect when an empty string
has been matched by a subpattern - to break infinite loops; used by
pcre_exec(). */
typedef struct eptrblock {
struct eptrblock *epb_prev;
PCRE_PUCHAR epb_saved_eptr;
} eptrblock;
/* Structure for passing "static" information around between the functions
doing traditional NFA matching, so that they are thread-safe. */
typedef struct match_data {
unsigned long int match_call_count; /* As it says */
unsigned long int match_limit; /* As it says */
unsigned long int match_limit_recursion; /* As it says */
int *offset_vector; /* Offset vector */
int offset_end; /* One past the end */
int offset_max; /* The maximum usable for return data */
int nltype; /* Newline type */
int nllen; /* Newline string length */
int name_count; /* Number of names in name table */
int name_entry_size; /* Size of entry in names table */
unsigned int skip_arg_count; /* For counting SKIP_ARGs */
unsigned int ignore_skip_arg; /* For re-run when SKIP arg name not found */
pcre_uchar *name_table; /* Table of names */
pcre_uchar nl[4]; /* Newline string when fixed */
const pcre_uint8 *lcc; /* Points to lower casing table */
const pcre_uint8 *fcc; /* Points to case-flipping table */
const pcre_uint8 *ctypes; /* Points to table of type maps */
BOOL notbol; /* NOTBOL flag */
BOOL noteol; /* NOTEOL flag */
BOOL utf; /* UTF-8 / UTF-16 flag */
BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
BOOL use_ucp; /* PCRE_UCP flag */
BOOL endonly; /* Dollar not before final \n */
BOOL notempty; /* Empty string match not wanted */
BOOL notempty_atstart; /* Empty string match at start not wanted */
BOOL hitend; /* Hit the end of the subject at some point */
BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
BOOL hasthen; /* Pattern contains (*THEN) */
const pcre_uchar *start_code; /* For use when recursing */
PCRE_PUCHAR start_subject; /* Start of the subject string */
PCRE_PUCHAR end_subject; /* End of the subject string */
PCRE_PUCHAR start_match_ptr; /* Start of matched string */
PCRE_PUCHAR end_match_ptr; /* Subject position at end match */
PCRE_PUCHAR start_used_ptr; /* Earliest consulted character */
int partial; /* PARTIAL options */
int end_offset_top; /* Highwater mark at end of match */
pcre_int32 capture_last; /* Most recent capture number + overflow flag */
int start_offset; /* The start offset value */
int match_function_type; /* Set for certain special calls of MATCH() */
eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
int eptrn; /* Next free eptrblock */
recursion_info *recursive; /* Linked list of recursion data */
void *callout_data; /* To pass back to callouts */
const pcre_uchar *mark; /* Mark pointer to pass back on success */
const pcre_uchar *nomatch_mark;/* Mark pointer to pass back on failure */
const pcre_uchar *once_target; /* Where to back up to for atomic groups */
#ifdef NO_RECURSE
void *match_frames_base; /* For remembering malloc'd frames */
#endif
} match_data;
/* A similar structure is used for the same purpose by the DFA matching
functions. */
typedef struct dfa_match_data {
const pcre_uchar *start_code; /* Start of the compiled pattern */
const pcre_uchar *start_subject ; /* Start of the subject string */
const pcre_uchar *end_subject; /* End of subject string */
const pcre_uchar *start_used_ptr; /* Earliest consulted character */
const pcre_uint8 *tables; /* Character tables */
int start_offset; /* The start offset value */
int moptions; /* Match options */
int poptions; /* Pattern options */
int nltype; /* Newline type */
int nllen; /* Newline string length */
pcre_uchar nl[4]; /* Newline string when fixed */
void *callout_data; /* To pass back to callouts */
dfa_recursion_info *recursive; /* Linked list of recursion data */
} dfa_match_data;
/* Bit definitions for entries in the pcre_ctypes table. */
#define ctype_space 0x01
#define ctype_letter 0x02
#define ctype_digit 0x04
#define ctype_xdigit 0x08
#define ctype_word 0x10 /* alphanumeric or '_' */
#define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
/* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
of bits for a class map. Some classes are built by combining these tables. */
#define cbit_space 0 /* [:space:] or \s */
#define cbit_xdigit 32 /* [:xdigit:] */
#define cbit_digit 64 /* [:digit:] or \d */
#define cbit_upper 96 /* [:upper:] */
#define cbit_lower 128 /* [:lower:] */
#define cbit_word 160 /* [:word:] or \w */
#define cbit_graph 192 /* [:graph:] */
#define cbit_print 224 /* [:print:] */
#define cbit_punct 256 /* [:punct:] */
#define cbit_cntrl 288 /* [:cntrl:] */
#define cbit_length 320 /* Length of the cbits table */
/* Offsets of the various tables from the base tables pointer, and
total length. */
#define lcc_offset 0
#define fcc_offset 256
#define cbits_offset 512
#define ctypes_offset (cbits_offset + cbit_length)
#define tables_length (ctypes_offset + 256)
/* Internal function and data prefixes. */
#if defined COMPILE_PCRE8
#ifndef PUBL
#define PUBL(name) pcre_##name
#endif
#ifndef PRIV
#define PRIV(name) _pcre_##name
#endif
#elif defined COMPILE_PCRE16
#ifndef PUBL
#define PUBL(name) pcre16_##name
#endif
#ifndef PRIV
#define PRIV(name) _pcre16_##name
#endif
#elif defined COMPILE_PCRE32
#ifndef PUBL
#define PUBL(name) pcre32_##name
#endif
#ifndef PRIV
#define PRIV(name) _pcre32_##name
#endif
#else
#error Unsupported compiling mode
#endif /* COMPILE_PCRE[8|16|32] */
/* Layout of the UCP type table that translates property names into types and
codes. Each entry used to point directly to a name, but to reduce the number of
relocations in shared libraries, it now has an offset into a single string
instead. */
typedef struct {
pcre_uint16 name_offset;
pcre_uint16 type;
pcre_uint16 value;
} ucp_type_table;
/* Internal shared data tables. These are tables that are used by more than one
of the exported public functions. They have to be "external" in the C sense,
but are not part of the PCRE public API. The data for these tables is in the
pcre_tables.c module. */
#ifdef COMPILE_PCRE8
extern const int PRIV(utf8_table1)[];
extern const int PRIV(utf8_table1_size);
extern const int PRIV(utf8_table2)[];
extern const int PRIV(utf8_table3)[];
extern const pcre_uint8 PRIV(utf8_table4)[];
#endif /* COMPILE_PCRE8 */
extern const char PRIV(utt_names)[];
extern const ucp_type_table PRIV(utt)[];
extern const int PRIV(utt_size);
extern const pcre_uint8 PRIV(OP_lengths)[];
extern const pcre_uint8 PRIV(default_tables)[];
extern const pcre_uint32 PRIV(hspace_list)[];
extern const pcre_uint32 PRIV(vspace_list)[];
/* Internal shared functions. These are functions that are used by more than
one of the exported public functions. They have to be "external" in the C
sense, but are not part of the PCRE public API. */
/* String comparison functions. */
#if defined COMPILE_PCRE8
#define STRCMP_UC_UC(str1, str2) \
strcmp((char *)(str1), (char *)(str2))
#define STRCMP_UC_C8(str1, str2) \
strcmp((char *)(str1), (str2))
#define STRNCMP_UC_UC(str1, str2, num) \
strncmp((char *)(str1), (char *)(str2), (num))
#define STRNCMP_UC_C8(str1, str2, num) \
strncmp((char *)(str1), (str2), (num))
#define STRLEN_UC(str) strlen((const char *)str)
#elif defined COMPILE_PCRE16 || defined COMPILE_PCRE32
extern int PRIV(strcmp_uc_uc)(const pcre_uchar *,
const pcre_uchar *);
extern int PRIV(strcmp_uc_c8)(const pcre_uchar *,
const char *);
extern int PRIV(strncmp_uc_uc)(const pcre_uchar *,
const pcre_uchar *, unsigned int num);
extern int PRIV(strncmp_uc_c8)(const pcre_uchar *,
const char *, unsigned int num);
extern unsigned int PRIV(strlen_uc)(const pcre_uchar *str);
#define STRCMP_UC_UC(str1, str2) \
PRIV(strcmp_uc_uc)((str1), (str2))
#define STRCMP_UC_C8(str1, str2) \
PRIV(strcmp_uc_c8)((str1), (str2))
#define STRNCMP_UC_UC(str1, str2, num) \
PRIV(strncmp_uc_uc)((str1), (str2), (num))
#define STRNCMP_UC_C8(str1, str2, num) \
PRIV(strncmp_uc_c8)((str1), (str2), (num))
#define STRLEN_UC(str) PRIV(strlen_uc)(str)
#endif /* COMPILE_PCRE[8|16|32] */
#if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
#define STRCMP_UC_UC_TEST(str1, str2) STRCMP_UC_UC(str1, str2)
#define STRCMP_UC_C8_TEST(str1, str2) STRCMP_UC_C8(str1, str2)
#elif defined COMPILE_PCRE32
extern int PRIV(strcmp_uc_uc_utf)(const pcre_uchar *,
const pcre_uchar *);
extern int PRIV(strcmp_uc_c8_utf)(const pcre_uchar *,
const char *);
#define STRCMP_UC_UC_TEST(str1, str2) \
(utf ? PRIV(strcmp_uc_uc_utf)((str1), (str2)) : PRIV(strcmp_uc_uc)((str1), (str2)))
#define STRCMP_UC_C8_TEST(str1, str2) \
(utf ? PRIV(strcmp_uc_c8_utf)((str1), (str2)) : PRIV(strcmp_uc_c8)((str1), (str2)))
#endif /* COMPILE_PCRE[8|16|32] */
extern const pcre_uchar *PRIV(find_bracket)(const pcre_uchar *, BOOL, int);
extern BOOL PRIV(is_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
int *, BOOL);
extern unsigned int PRIV(ord2utf)(pcre_uint32, pcre_uchar *);
extern int PRIV(valid_utf)(PCRE_PUCHAR, int, int *);
extern BOOL PRIV(was_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
int *, BOOL);
extern BOOL PRIV(xclass)(pcre_uint32, const pcre_uchar *, BOOL);
#ifdef SUPPORT_JIT
extern void PRIV(jit_compile)(const REAL_PCRE *,
PUBL(extra) *, int);
extern int PRIV(jit_exec)(const PUBL(extra) *,
const pcre_uchar *, int, int, int, int *, int);
extern void PRIV(jit_free)(void *);
extern int PRIV(jit_get_size)(void *);
extern const char* PRIV(jit_get_target)(void);
#endif
/* Unicode character database (UCD) */
typedef struct {
pcre_uint8 script; /* ucp_Arabic, etc. */
pcre_uint8 chartype; /* ucp_Cc, etc. (general categories) */
pcre_uint8 gbprop; /* ucp_gbControl, etc. (grapheme break property) */
pcre_uint8 caseset; /* offset to multichar other cases or zero */
pcre_int32 other_case; /* offset to other case, or zero if none */
} ucd_record;
extern const pcre_uint32 PRIV(ucd_caseless_sets)[];
extern const ucd_record PRIV(ucd_records)[];
extern const pcre_uint8 PRIV(ucd_stage1)[];
extern const pcre_uint16 PRIV(ucd_stage2)[];
extern const pcre_uint32 PRIV(ucp_gentype)[];
extern const pcre_uint32 PRIV(ucp_gbtable)[];
#ifdef COMPILE_PCRE32
extern const ucd_record PRIV(dummy_ucd_record)[];
#endif
#ifdef SUPPORT_JIT
extern const int PRIV(ucp_typerange)[];
#endif
#ifdef SUPPORT_UCP
/* UCD access macros */
#define UCD_BLOCK_SIZE 128
#define REAL_GET_UCD(ch) (PRIV(ucd_records) + \
PRIV(ucd_stage2)[PRIV(ucd_stage1)[(int)(ch) / UCD_BLOCK_SIZE] * \
UCD_BLOCK_SIZE + (int)(ch) % UCD_BLOCK_SIZE])
#ifdef COMPILE_PCRE32
#define GET_UCD(ch) ((ch > 0x10ffff)? PRIV(dummy_ucd_record) : REAL_GET_UCD(ch))
#else
#define GET_UCD(ch) REAL_GET_UCD(ch)
#endif
#define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
#define UCD_SCRIPT(ch) GET_UCD(ch)->script
#define UCD_CATEGORY(ch) PRIV(ucp_gentype)[UCD_CHARTYPE(ch)]
#define UCD_GRAPHBREAK(ch) GET_UCD(ch)->gbprop
#define UCD_CASESET(ch) GET_UCD(ch)->caseset
#define UCD_OTHERCASE(ch) ((pcre_uint32)((int)ch + (int)(GET_UCD(ch)->other_case)))
#endif /* SUPPORT_UCP */
#endif
/* End of pcre_internal.h */
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_newline.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2012 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains internal functions for testing newlines when more than
one kind of newline is to be recognized. When a newline is found, its length is
returned. In principle, we could implement several newline "types", each
referring to a different set of newline characters. At present, PCRE supports
only NLTYPE_FIXED, which gets handled without these functions, NLTYPE_ANYCRLF,
and NLTYPE_ANY. The full list of Unicode newline characters is taken from
http://unicode.org/unicode/reports/tr18/. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
/*************************************************
* Check for newline at given position *
*************************************************/
/* It is guaranteed that the initial value of ptr is less than the end of the
string that is being processed.
Arguments:
ptr pointer to possible newline
type the newline type
endptr pointer to the end of the string
lenptr where to return the length
utf TRUE if in utf mode
Returns: TRUE or FALSE
*/
BOOL
PRIV(is_newline)(PCRE_PUCHAR ptr, int type, PCRE_PUCHAR endptr, int *lenptr,
BOOL utf)
{
pcre_uint32 c;
(void)utf;
#ifdef SUPPORT_UTF
if (utf)
{
GETCHAR(c, ptr);
}
else
#endif /* SUPPORT_UTF */
c = *ptr;
/* Note that this function is called only for ANY or ANYCRLF. */
if (type == NLTYPE_ANYCRLF) switch(c)
{
case CHAR_LF: *lenptr = 1; return TRUE;
case CHAR_CR: *lenptr = (ptr < endptr - 1 && ptr[1] == CHAR_LF)? 2 : 1;
return TRUE;
default: return FALSE;
}
/* NLTYPE_ANY */
else switch(c)
{
#ifdef EBCDIC
case CHAR_NEL:
#endif
case CHAR_LF:
case CHAR_VT:
case CHAR_FF: *lenptr = 1; return TRUE;
case CHAR_CR:
*lenptr = (ptr < endptr - 1 && ptr[1] == CHAR_LF)? 2 : 1;
return TRUE;
#ifndef EBCDIC
#ifdef COMPILE_PCRE8
case CHAR_NEL: *lenptr = utf? 2 : 1; return TRUE;
case 0x2028: /* LS */
case 0x2029: *lenptr = 3; return TRUE; /* PS */
#else /* COMPILE_PCRE16 || COMPILE_PCRE32 */
case CHAR_NEL:
case 0x2028: /* LS */
case 0x2029: *lenptr = 1; return TRUE; /* PS */
#endif /* COMPILE_PCRE8 */
#endif /* Not EBCDIC */
default: return FALSE;
}
}
/*************************************************
* Check for newline at previous position *
*************************************************/
/* It is guaranteed that the initial value of ptr is greater than the start of
the string that is being processed.
Arguments:
ptr pointer to possible newline
type the newline type
startptr pointer to the start of the string
lenptr where to return the length
utf TRUE if in utf mode
Returns: TRUE or FALSE
*/
BOOL
PRIV(was_newline)(PCRE_PUCHAR ptr, int type, PCRE_PUCHAR startptr, int *lenptr,
BOOL utf)
{
pcre_uint32 c;
(void)utf;
ptr--;
#ifdef SUPPORT_UTF
if (utf)
{
BACKCHAR(ptr);
GETCHAR(c, ptr);
}
else
#endif /* SUPPORT_UTF */
c = *ptr;
/* Note that this function is called only for ANY or ANYCRLF. */
if (type == NLTYPE_ANYCRLF) switch(c)
{
case CHAR_LF:
*lenptr = (ptr > startptr && ptr[-1] == CHAR_CR)? 2 : 1;
return TRUE;
case CHAR_CR: *lenptr = 1; return TRUE;
default: return FALSE;
}
/* NLTYPE_ANY */
else switch(c)
{
case CHAR_LF:
*lenptr = (ptr > startptr && ptr[-1] == CHAR_CR)? 2 : 1;
return TRUE;
#ifdef EBCDIC
case CHAR_NEL:
#endif
case CHAR_VT:
case CHAR_FF:
case CHAR_CR: *lenptr = 1; return TRUE;
#ifndef EBCDIC
#ifdef COMPILE_PCRE8
case CHAR_NEL: *lenptr = utf? 2 : 1; return TRUE;
case 0x2028: /* LS */
case 0x2029: *lenptr = 3; return TRUE; /* PS */
#else /* COMPILE_PCRE16 || COMPILE_PCRE32 */
case CHAR_NEL:
case 0x2028: /* LS */
case 0x2029: *lenptr = 1; return TRUE; /* PS */
#endif /* COMPILE_PCRE8 */
#endif /* NotEBCDIC */
default: return FALSE;
}
}
/* End of pcre_newline.c */
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_dfa_exec.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language (but see
below for why this module is different).
Written by Philip Hazel
Copyright (c) 1997-2017 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains the external function pcre_dfa_exec(), which is an
alternative matching function that uses a sort of DFA algorithm (not a true
FSM). This is NOT Perl-compatible, but it has advantages in certain
applications. */
/* NOTE ABOUT PERFORMANCE: A user of this function sent some code that improved
the performance of his patterns greatly. I could not use it as it stood, as it
was not thread safe, and made assumptions about pattern sizes. Also, it caused
test 7 to loop, and test 9 to crash with a segfault.
The issue is the check for duplicate states, which is done by a simple linear
search up the state list. (Grep for "duplicate" below to find the code.) For
many patterns, there will never be many states active at one time, so a simple
linear search is fine. In patterns that have many active states, it might be a
bottleneck. The suggested code used an indexing scheme to remember which states
had previously been used for each character, and avoided the linear search when
it knew there was no chance of a duplicate. This was implemented when adding
states to the state lists.
I wrote some thread-safe, not-limited code to try something similar at the time
of checking for duplicates (instead of when adding states), using index vectors
on the stack. It did give a 13% improvement with one specially constructed
pattern for certain subject strings, but on other strings and on many of the
simpler patterns in the test suite it did worse. The major problem, I think,
was the extra time to initialize the index. This had to be done for each call
of internal_dfa_exec(). (The supplied patch used a static vector, initialized
only once - I suspect this was the cause of the problems with the tests.)
Overall, I concluded that the gains in some cases did not outweigh the losses
in others, so I abandoned this code. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define NLBLOCK md /* Block containing newline information */
#define PSSTART start_subject /* Field containing processed string start */
#define PSEND end_subject /* Field containing processed string end */
#include "pcre_internal.h"
/* For use to indent debugging output */
#define SP " "
/*************************************************
* Code parameters and static tables *
*************************************************/
/* These are offsets that are used to turn the OP_TYPESTAR and friends opcodes
into others, under special conditions. A gap of 20 between the blocks should be
enough. The resulting opcodes don't have to be less than 256 because they are
never stored, so we push them well clear of the normal opcodes. */
#define OP_PROP_EXTRA 300
#define OP_EXTUNI_EXTRA 320
#define OP_ANYNL_EXTRA 340
#define OP_HSPACE_EXTRA 360
#define OP_VSPACE_EXTRA 380
/* This table identifies those opcodes that are followed immediately by a
character that is to be tested in some way. This makes it possible to
centralize the loading of these characters. In the case of Type * etc, the
"character" is the opcode for \D, \d, \S, \s, \W, or \w, which will always be a
small value. Non-zero values in the table are the offsets from the opcode where
the character is to be found. ***NOTE*** If the start of this table is
modified, the three tables that follow must also be modified. */
static const pcre_uint8 coptable[] = {
0, /* End */
0, 0, 0, 0, 0, /* \A, \G, \K, \B, \b */
0, 0, 0, 0, 0, 0, /* \D, \d, \S, \s, \W, \w */
0, 0, 0, /* Any, AllAny, Anybyte */
0, 0, /* \P, \p */
0, 0, 0, 0, 0, /* \R, \H, \h, \V, \v */
0, /* \X */
0, 0, 0, 0, 0, 0, /* \Z, \z, $, $M, ^, ^M */
1, /* Char */
1, /* Chari */
1, /* not */
1, /* noti */
/* Positive single-char repeats */
1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */
1+IMM2_SIZE, 1+IMM2_SIZE, /* upto, minupto */
1+IMM2_SIZE, /* exact */
1, 1, 1, 1+IMM2_SIZE, /* *+, ++, ?+, upto+ */
1, 1, 1, 1, 1, 1, /* *I, *?I, +I, +?I, ?I, ??I */
1+IMM2_SIZE, 1+IMM2_SIZE, /* upto I, minupto I */
1+IMM2_SIZE, /* exact I */
1, 1, 1, 1+IMM2_SIZE, /* *+I, ++I, ?+I, upto+I */
/* Negative single-char repeats - only for chars < 256 */
1, 1, 1, 1, 1, 1, /* NOT *, *?, +, +?, ?, ?? */
1+IMM2_SIZE, 1+IMM2_SIZE, /* NOT upto, minupto */
1+IMM2_SIZE, /* NOT exact */
1, 1, 1, 1+IMM2_SIZE, /* NOT *+, ++, ?+, upto+ */
1, 1, 1, 1, 1, 1, /* NOT *I, *?I, +I, +?I, ?I, ??I */
1+IMM2_SIZE, 1+IMM2_SIZE, /* NOT upto I, minupto I */
1+IMM2_SIZE, /* NOT exact I */
1, 1, 1, 1+IMM2_SIZE, /* NOT *+I, ++I, ?+I, upto+I */
/* Positive type repeats */
1, 1, 1, 1, 1, 1, /* Type *, *?, +, +?, ?, ?? */
1+IMM2_SIZE, 1+IMM2_SIZE, /* Type upto, minupto */
1+IMM2_SIZE, /* Type exact */
1, 1, 1, 1+IMM2_SIZE, /* Type *+, ++, ?+, upto+ */
/* Character class & ref repeats */
0, 0, 0, 0, 0, 0, /* *, *?, +, +?, ?, ?? */
0, 0, /* CRRANGE, CRMINRANGE */
0, 0, 0, 0, /* Possessive *+, ++, ?+, CRPOSRANGE */
0, /* CLASS */
0, /* NCLASS */
0, /* XCLASS - variable length */
0, /* REF */
0, /* REFI */
0, /* DNREF */
0, /* DNREFI */
0, /* RECURSE */
0, /* CALLOUT */
0, /* Alt */
0, /* Ket */
0, /* KetRmax */
0, /* KetRmin */
0, /* KetRpos */
0, /* Reverse */
0, /* Assert */
0, /* Assert not */
0, /* Assert behind */
0, /* Assert behind not */
0, 0, /* ONCE, ONCE_NC */
0, 0, 0, 0, 0, /* BRA, BRAPOS, CBRA, CBRAPOS, COND */
0, 0, 0, 0, 0, /* SBRA, SBRAPOS, SCBRA, SCBRAPOS, SCOND */
0, 0, /* CREF, DNCREF */
0, 0, /* RREF, DNRREF */
0, /* DEF */
0, 0, 0, /* BRAZERO, BRAMINZERO, BRAPOSZERO */
0, 0, 0, /* MARK, PRUNE, PRUNE_ARG */
0, 0, 0, 0, /* SKIP, SKIP_ARG, THEN, THEN_ARG */
0, 0, 0, 0, /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT */
0, 0 /* CLOSE, SKIPZERO */
};
/* This table identifies those opcodes that inspect a character. It is used to
remember the fact that a character could have been inspected when the end of
the subject is reached. ***NOTE*** If the start of this table is modified, the
two tables that follow must also be modified. */
static const pcre_uint8 poptable[] = {
0, /* End */
0, 0, 0, 1, 1, /* \A, \G, \K, \B, \b */
1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */
1, 1, 1, /* Any, AllAny, Anybyte */
1, 1, /* \P, \p */
1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */
1, /* \X */
0, 0, 0, 0, 0, 0, /* \Z, \z, $, $M, ^, ^M */
1, /* Char */
1, /* Chari */
1, /* not */
1, /* noti */
/* Positive single-char repeats */
1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */
1, 1, 1, /* upto, minupto, exact */
1, 1, 1, 1, /* *+, ++, ?+, upto+ */
1, 1, 1, 1, 1, 1, /* *I, *?I, +I, +?I, ?I, ??I */
1, 1, 1, /* upto I, minupto I, exact I */
1, 1, 1, 1, /* *+I, ++I, ?+I, upto+I */
/* Negative single-char repeats - only for chars < 256 */
1, 1, 1, 1, 1, 1, /* NOT *, *?, +, +?, ?, ?? */
1, 1, 1, /* NOT upto, minupto, exact */
1, 1, 1, 1, /* NOT *+, ++, ?+, upto+ */
1, 1, 1, 1, 1, 1, /* NOT *I, *?I, +I, +?I, ?I, ??I */
1, 1, 1, /* NOT upto I, minupto I, exact I */
1, 1, 1, 1, /* NOT *+I, ++I, ?+I, upto+I */
/* Positive type repeats */
1, 1, 1, 1, 1, 1, /* Type *, *?, +, +?, ?, ?? */
1, 1, 1, /* Type upto, minupto, exact */
1, 1, 1, 1, /* Type *+, ++, ?+, upto+ */
/* Character class & ref repeats */
1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */
1, 1, /* CRRANGE, CRMINRANGE */
1, 1, 1, 1, /* Possessive *+, ++, ?+, CRPOSRANGE */
1, /* CLASS */
1, /* NCLASS */
1, /* XCLASS - variable length */
0, /* REF */
0, /* REFI */
0, /* DNREF */
0, /* DNREFI */
0, /* RECURSE */
0, /* CALLOUT */
0, /* Alt */
0, /* Ket */
0, /* KetRmax */
0, /* KetRmin */
0, /* KetRpos */
0, /* Reverse */
0, /* Assert */
0, /* Assert not */
0, /* Assert behind */
0, /* Assert behind not */
0, 0, /* ONCE, ONCE_NC */
0, 0, 0, 0, 0, /* BRA, BRAPOS, CBRA, CBRAPOS, COND */
0, 0, 0, 0, 0, /* SBRA, SBRAPOS, SCBRA, SCBRAPOS, SCOND */
0, 0, /* CREF, DNCREF */
0, 0, /* RREF, DNRREF */
0, /* DEF */
0, 0, 0, /* BRAZERO, BRAMINZERO, BRAPOSZERO */
0, 0, 0, /* MARK, PRUNE, PRUNE_ARG */
0, 0, 0, 0, /* SKIP, SKIP_ARG, THEN, THEN_ARG */
0, 0, 0, 0, /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT */
0, 0 /* CLOSE, SKIPZERO */
};
/* These 2 tables allow for compact code for testing for \D, \d, \S, \s, \W,
and \w */
static const pcre_uint8 toptable1[] = {
0, 0, 0, 0, 0, 0,
ctype_digit, ctype_digit,
ctype_space, ctype_space,
ctype_word, ctype_word,
0, 0 /* OP_ANY, OP_ALLANY */
};
static const pcre_uint8 toptable2[] = {
0, 0, 0, 0, 0, 0,
ctype_digit, 0,
ctype_space, 0,
ctype_word, 0,
1, 1 /* OP_ANY, OP_ALLANY */
};
/* Structure for holding data about a particular state, which is in effect the
current data for an active path through the match tree. It must consist
entirely of ints because the working vector we are passed, and which we put
these structures in, is a vector of ints. */
typedef struct stateblock {
int offset; /* Offset to opcode */
int count; /* Count for repeats */
int data; /* Some use extra data */
} stateblock;
#define INTS_PER_STATEBLOCK (int)(sizeof(stateblock)/sizeof(int))
#ifdef PCRE_DEBUG
/*************************************************
* Print character string *
*************************************************/
/* Character string printing function for debugging.
Arguments:
p points to string
length number of bytes
f where to print
Returns: nothing
*/
static void
pchars(const pcre_uchar *p, int length, FILE *f)
{
pcre_uint32 c;
while (length-- > 0)
{
if (isprint(c = *(p++)))
fprintf(f, "%c", c);
else
fprintf(f, "\\x{%02x}", c);
}
}
#endif
/*************************************************
* Execute a Regular Expression - DFA engine *
*************************************************/
/* This internal function applies a compiled pattern to a subject string,
starting at a given point, using a DFA engine. This function is called from the
external one, possibly multiple times if the pattern is not anchored. The
function calls itself recursively for some kinds of subpattern.
Arguments:
md the match_data block with fixed information
this_start_code the opening bracket of this subexpression's code
current_subject where we currently are in the subject string
start_offset start offset in the subject string
offsets vector to contain the matching string offsets
offsetcount size of same
workspace vector of workspace
wscount size of same
rlevel function call recursion level
Returns: > 0 => number of match offset pairs placed in offsets
= 0 => offsets overflowed; longest matches are present
-1 => failed to match
< -1 => some kind of unexpected problem
The following macros are used for adding states to the two state vectors (one
for the current character, one for the following character). */
#define ADD_ACTIVE(x,y) \
if (active_count++ < wscount) \
{ \
next_active_state->offset = (x); \
next_active_state->count = (y); \
next_active_state++; \
DPRINTF(("%.*sADD_ACTIVE(%d,%d)\n", rlevel*2-2, SP, (x), (y))); \
} \
else return PCRE_ERROR_DFA_WSSIZE
#define ADD_ACTIVE_DATA(x,y,z) \
if (active_count++ < wscount) \
{ \
next_active_state->offset = (x); \
next_active_state->count = (y); \
next_active_state->data = (z); \
next_active_state++; \
DPRINTF(("%.*sADD_ACTIVE_DATA(%d,%d,%d)\n", rlevel*2-2, SP, (x), (y), (z))); \
} \
else return PCRE_ERROR_DFA_WSSIZE
#define ADD_NEW(x,y) \
if (new_count++ < wscount) \
{ \
next_new_state->offset = (x); \
next_new_state->count = (y); \
next_new_state++; \
DPRINTF(("%.*sADD_NEW(%d,%d)\n", rlevel*2-2, SP, (x), (y))); \
} \
else return PCRE_ERROR_DFA_WSSIZE
#define ADD_NEW_DATA(x,y,z) \
if (new_count++ < wscount) \
{ \
next_new_state->offset = (x); \
next_new_state->count = (y); \
next_new_state->data = (z); \
next_new_state++; \
DPRINTF(("%.*sADD_NEW_DATA(%d,%d,%d) line %d\n", rlevel*2-2, SP, \
(x), (y), (z), __LINE__)); \
} \
else return PCRE_ERROR_DFA_WSSIZE
/* And now, here is the code */
static int
internal_dfa_exec(
dfa_match_data *md,
const pcre_uchar *this_start_code,
const pcre_uchar *current_subject,
int start_offset,
int *offsets,
int offsetcount,
int *workspace,
int wscount,
int rlevel)
{
stateblock *active_states, *new_states, *temp_states;
stateblock *next_active_state, *next_new_state;
const pcre_uint8 *ctypes, *lcc, *fcc;
const pcre_uchar *ptr;
const pcre_uchar *end_code, *first_op;
dfa_recursion_info new_recursive;
int active_count, new_count, match_count;
/* Some fields in the md block are frequently referenced, so we load them into
independent variables in the hope that this will perform better. */
const pcre_uchar *start_subject = md->start_subject;
const pcre_uchar *end_subject = md->end_subject;
const pcre_uchar *start_code = md->start_code;
#ifdef SUPPORT_UTF
BOOL utf = (md->poptions & PCRE_UTF8) != 0;
#else
BOOL utf = FALSE;
#endif
BOOL reset_could_continue = FALSE;
rlevel++;
offsetcount &= (-2);
wscount -= 2;
wscount = (wscount - (wscount % (INTS_PER_STATEBLOCK * 2))) /
(2 * INTS_PER_STATEBLOCK);
DPRINTF(("\n%.*s---------------------\n"
"%.*sCall to internal_dfa_exec f=%d\n",
rlevel*2-2, SP, rlevel*2-2, SP, rlevel));
ctypes = md->tables + ctypes_offset;
lcc = md->tables + lcc_offset;
fcc = md->tables + fcc_offset;
match_count = PCRE_ERROR_NOMATCH; /* A negative number */
active_states = (stateblock *)(workspace + 2);
next_new_state = new_states = active_states + wscount;
new_count = 0;
first_op = this_start_code + 1 + LINK_SIZE +
((*this_start_code == OP_CBRA || *this_start_code == OP_SCBRA ||
*this_start_code == OP_CBRAPOS || *this_start_code == OP_SCBRAPOS)
? IMM2_SIZE:0);
/* The first thing in any (sub) pattern is a bracket of some sort. Push all
the alternative states onto the list, and find out where the end is. This
makes is possible to use this function recursively, when we want to stop at a
matching internal ket rather than at the end.
If the first opcode in the first alternative is OP_REVERSE, we are dealing with
a backward assertion. In that case, we have to find out the maximum amount to
move back, and set up each alternative appropriately. */
if (*first_op == OP_REVERSE)
{
int max_back = 0;
int gone_back;
end_code = this_start_code;
do
{
int back = GET(end_code, 2+LINK_SIZE);
if (back > max_back) max_back = back;
end_code += GET(end_code, 1);
}
while (*end_code == OP_ALT);
/* If we can't go back the amount required for the longest lookbehind
pattern, go back as far as we can; some alternatives may still be viable. */
#ifdef SUPPORT_UTF
/* In character mode we have to step back character by character */
if (utf)
{
for (gone_back = 0; gone_back < max_back; gone_back++)
{
if (current_subject <= start_subject) break;
current_subject--;
ACROSSCHAR(current_subject > start_subject, *current_subject, current_subject--);
}
}
else
#endif
/* In byte-mode we can do this quickly. */
{
gone_back = (current_subject - max_back < start_subject)?
(int)(current_subject - start_subject) : max_back;
current_subject -= gone_back;
}
/* Save the earliest consulted character */
if (current_subject < md->start_used_ptr)
md->start_used_ptr = current_subject;
/* Now we can process the individual branches. */
end_code = this_start_code;
do
{
int back = GET(end_code, 2+LINK_SIZE);
if (back <= gone_back)
{
int bstate = (int)(end_code - start_code + 2 + 2*LINK_SIZE);
ADD_NEW_DATA(-bstate, 0, gone_back - back);
}
end_code += GET(end_code, 1);
}
while (*end_code == OP_ALT);
}
/* This is the code for a "normal" subpattern (not a backward assertion). The
start of a whole pattern is always one of these. If we are at the top level,
we may be asked to restart matching from the same point that we reached for a
previous partial match. We still have to scan through the top-level branches to
find the end state. */
else
{
end_code = this_start_code;
/* Restarting */
if (rlevel == 1 && (md->moptions & PCRE_DFA_RESTART) != 0)
{
do { end_code += GET(end_code, 1); } while (*end_code == OP_ALT);
new_count = workspace[1];
if (!workspace[0])
memcpy(new_states, active_states, new_count * sizeof(stateblock));
}
/* Not restarting */
else
{
int length = 1 + LINK_SIZE +
((*this_start_code == OP_CBRA || *this_start_code == OP_SCBRA ||
*this_start_code == OP_CBRAPOS || *this_start_code == OP_SCBRAPOS)
? IMM2_SIZE:0);
do
{
ADD_NEW((int)(end_code - start_code + length), 0);
end_code += GET(end_code, 1);
length = 1 + LINK_SIZE;
}
while (*end_code == OP_ALT);
}
}
workspace[0] = 0; /* Bit indicating which vector is current */
DPRINTF(("%.*sEnd state = %d\n", rlevel*2-2, SP, (int)(end_code - start_code)));
/* Loop for scanning the subject */
ptr = current_subject;
for (;;)
{
int i, j;
int clen, dlen;
pcre_uint32 c, d;
int forced_fail = 0;
BOOL partial_newline = FALSE;
BOOL could_continue = reset_could_continue;
reset_could_continue = FALSE;
/* Make the new state list into the active state list and empty the
new state list. */
temp_states = active_states;
active_states = new_states;
new_states = temp_states;
active_count = new_count;
new_count = 0;
workspace[0] ^= 1; /* Remember for the restarting feature */
workspace[1] = active_count;
#ifdef PCRE_DEBUG
printf("%.*sNext character: rest of subject = \"", rlevel*2-2, SP);
pchars(ptr, STRLEN_UC(ptr), stdout);
printf("\"\n");
printf("%.*sActive states: ", rlevel*2-2, SP);
for (i = 0; i < active_count; i++)
printf("%d/%d ", active_states[i].offset, active_states[i].count);
printf("\n");
#endif
/* Set the pointers for adding new states */
next_active_state = active_states + active_count;
next_new_state = new_states;
/* Load the current character from the subject outside the loop, as many
different states may want to look at it, and we assume that at least one
will. */
if (ptr < end_subject)
{
clen = 1; /* Number of data items in the character */
#ifdef SUPPORT_UTF
GETCHARLENTEST(c, ptr, clen);
#else
c = *ptr;
#endif /* SUPPORT_UTF */
}
else
{
clen = 0; /* This indicates the end of the subject */
c = NOTACHAR; /* This value should never actually be used */
}
/* Scan up the active states and act on each one. The result of an action
may be to add more states to the currently active list (e.g. on hitting a
parenthesis) or it may be to put states on the new list, for considering
when we move the character pointer on. */
for (i = 0; i < active_count; i++)
{
stateblock *current_state = active_states + i;
BOOL caseless = FALSE;
const pcre_uchar *code;
int state_offset = current_state->offset;
int codevalue, rrc;
int count;
#ifdef PCRE_DEBUG
printf ("%.*sProcessing state %d c=", rlevel*2-2, SP, state_offset);
if (clen == 0) printf("EOL\n");
else if (c > 32 && c < 127) printf("'%c'\n", c);
else printf("0x%02x\n", c);
#endif
/* A negative offset is a special case meaning "hold off going to this
(negated) state until the number of characters in the data field have
been skipped". If the could_continue flag was passed over from a previous
state, arrange for it to passed on. */
if (state_offset < 0)
{
if (current_state->data > 0)
{
DPRINTF(("%.*sSkipping this character\n", rlevel*2-2, SP));
ADD_NEW_DATA(state_offset, current_state->count,
current_state->data - 1);
if (could_continue) reset_could_continue = TRUE;
continue;
}
else
{
current_state->offset = state_offset = -state_offset;
}
}
/* Check for a duplicate state with the same count, and skip if found.
See the note at the head of this module about the possibility of improving
performance here. */
for (j = 0; j < i; j++)
{
if (active_states[j].offset == state_offset &&
active_states[j].count == current_state->count)
{
DPRINTF(("%.*sDuplicate state: skipped\n", rlevel*2-2, SP));
goto NEXT_ACTIVE_STATE;
}
}
/* The state offset is the offset to the opcode */
code = start_code + state_offset;
codevalue = *code;
/* If this opcode inspects a character, but we are at the end of the
subject, remember the fact for use when testing for a partial match. */
if (clen == 0 && poptable[codevalue] != 0)
could_continue = TRUE;
/* If this opcode is followed by an inline character, load it. It is
tempting to test for the presence of a subject character here, but that
is wrong, because sometimes zero repetitions of the subject are
permitted.
We also use this mechanism for opcodes such as OP_TYPEPLUS that take an
argument that is not a data character - but is always one byte long because
the values are small. We have to take special action to deal with \P, \p,
\H, \h, \V, \v and \X in this case. To keep the other cases fast, convert
these ones to new opcodes. */
if (coptable[codevalue] > 0)
{
dlen = 1;
#ifdef SUPPORT_UTF
if (utf) { GETCHARLEN(d, (code + coptable[codevalue]), dlen); } else
#endif /* SUPPORT_UTF */
d = code[coptable[codevalue]];
if (codevalue >= OP_TYPESTAR)
{
switch(d)
{
case OP_ANYBYTE: return PCRE_ERROR_DFA_UITEM;
case OP_NOTPROP:
case OP_PROP: codevalue += OP_PROP_EXTRA; break;
case OP_ANYNL: codevalue += OP_ANYNL_EXTRA; break;
case OP_EXTUNI: codevalue += OP_EXTUNI_EXTRA; break;
case OP_NOT_HSPACE:
case OP_HSPACE: codevalue += OP_HSPACE_EXTRA; break;
case OP_NOT_VSPACE:
case OP_VSPACE: codevalue += OP_VSPACE_EXTRA; break;
default: break;
}
}
}
else
{
dlen = 0; /* Not strictly necessary, but compilers moan */
d = NOTACHAR; /* if these variables are not set. */
}
/* Now process the individual opcodes */
switch (codevalue)
{
/* ========================================================================== */
/* These cases are never obeyed. This is a fudge that causes a compile-
time error if the vectors coptable or poptable, which are indexed by
opcode, are not the correct length. It seems to be the only way to do
such a check at compile time, as the sizeof() operator does not work
in the C preprocessor. */
case OP_TABLE_LENGTH:
case OP_TABLE_LENGTH +
((sizeof(coptable) == OP_TABLE_LENGTH) &&
(sizeof(poptable) == OP_TABLE_LENGTH)):
break;
/* ========================================================================== */
/* Reached a closing bracket. If not at the end of the pattern, carry
on with the next opcode. For repeating opcodes, also add the repeat
state. Note that KETRPOS will always be encountered at the end of the
subpattern, because the possessive subpattern repeats are always handled
using recursive calls. Thus, it never adds any new states.
At the end of the (sub)pattern, unless we have an empty string and
PCRE_NOTEMPTY is set, or PCRE_NOTEMPTY_ATSTART is set and we are at the
start of the subject, save the match data, shifting up all previous
matches so we always have the longest first. */
case OP_KET:
case OP_KETRMIN:
case OP_KETRMAX:
case OP_KETRPOS:
if (code != end_code)
{
ADD_ACTIVE(state_offset + 1 + LINK_SIZE, 0);
if (codevalue != OP_KET)
{
ADD_ACTIVE(state_offset - GET(code, 1), 0);
}
}
else
{
if (ptr > current_subject ||
((md->moptions & PCRE_NOTEMPTY) == 0 &&
((md->moptions & PCRE_NOTEMPTY_ATSTART) == 0 ||
current_subject > start_subject + md->start_offset)))
{
if (match_count < 0) match_count = (offsetcount >= 2)? 1 : 0;
else if (match_count > 0 && ++match_count * 2 > offsetcount)
match_count = 0;
count = ((match_count == 0)? offsetcount : match_count * 2) - 2;
if (count > 0) memmove(offsets + 2, offsets, count * sizeof(int));
if (offsetcount >= 2)
{
offsets[0] = (int)(current_subject - start_subject);
offsets[1] = (int)(ptr - start_subject);
DPRINTF(("%.*sSet matched string = \"%.*s\"\n", rlevel*2-2, SP,
offsets[1] - offsets[0], (char *)current_subject));
}
if ((md->moptions & PCRE_DFA_SHORTEST) != 0)
{
DPRINTF(("%.*sEnd of internal_dfa_exec %d: returning %d\n"
"%.*s---------------------\n\n", rlevel*2-2, SP, rlevel,
match_count, rlevel*2-2, SP));
return match_count;
}
}
}
break;
/* ========================================================================== */
/* These opcodes add to the current list of states without looking
at the current character. */
/*-----------------------------------------------------------------*/
case OP_ALT:
do { code += GET(code, 1); } while (*code == OP_ALT);
ADD_ACTIVE((int)(code - start_code), 0);
break;
/*-----------------------------------------------------------------*/
case OP_BRA:
case OP_SBRA:
do
{
ADD_ACTIVE((int)(code - start_code + 1 + LINK_SIZE), 0);
code += GET(code, 1);
}
while (*code == OP_ALT);
break;
/*-----------------------------------------------------------------*/
case OP_CBRA:
case OP_SCBRA:
ADD_ACTIVE((int)(code - start_code + 1 + LINK_SIZE + IMM2_SIZE), 0);
code += GET(code, 1);
while (*code == OP_ALT)
{
ADD_ACTIVE((int)(code - start_code + 1 + LINK_SIZE), 0);
code += GET(code, 1);
}
break;
/*-----------------------------------------------------------------*/
case OP_BRAZERO:
case OP_BRAMINZERO:
ADD_ACTIVE(state_offset + 1, 0);
code += 1 + GET(code, 2);
while (*code == OP_ALT) code += GET(code, 1);
ADD_ACTIVE((int)(code - start_code + 1 + LINK_SIZE), 0);
break;
/*-----------------------------------------------------------------*/
case OP_SKIPZERO:
code += 1 + GET(code, 2);
while (*code == OP_ALT) code += GET(code, 1);
ADD_ACTIVE((int)(code - start_code + 1 + LINK_SIZE), 0);
break;
/*-----------------------------------------------------------------*/
case OP_CIRC:
if (ptr == start_subject && (md->moptions & PCRE_NOTBOL) == 0)
{ ADD_ACTIVE(state_offset + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_CIRCM:
if ((ptr == start_subject && (md->moptions & PCRE_NOTBOL) == 0) ||
(ptr != end_subject && WAS_NEWLINE(ptr)))
{ ADD_ACTIVE(state_offset + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_EOD:
if (ptr >= end_subject)
{
if ((md->moptions & PCRE_PARTIAL_HARD) != 0)
could_continue = TRUE;
else { ADD_ACTIVE(state_offset + 1, 0); }
}
break;
/*-----------------------------------------------------------------*/
case OP_SOD:
if (ptr == start_subject) { ADD_ACTIVE(state_offset + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_SOM:
if (ptr == start_subject + start_offset) { ADD_ACTIVE(state_offset + 1, 0); }
break;
/* ========================================================================== */
/* These opcodes inspect the next subject character, and sometimes
the previous one as well, but do not have an argument. The variable
clen contains the length of the current character and is zero if we are
at the end of the subject. */
/*-----------------------------------------------------------------*/
case OP_ANY:
if (clen > 0 && !IS_NEWLINE(ptr))
{
if (ptr + 1 >= md->end_subject &&
(md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
could_continue = partial_newline = TRUE;
}
else
{
ADD_NEW(state_offset + 1, 0);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_ALLANY:
if (clen > 0)
{ ADD_NEW(state_offset + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_EODN:
if (clen == 0 && (md->moptions & PCRE_PARTIAL_HARD) != 0)
could_continue = TRUE;
else if (clen == 0 || (IS_NEWLINE(ptr) && ptr == end_subject - md->nllen))
{ ADD_ACTIVE(state_offset + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_DOLL:
if ((md->moptions & PCRE_NOTEOL) == 0)
{
if (clen == 0 && (md->moptions & PCRE_PARTIAL_HARD) != 0)
could_continue = TRUE;
else if (clen == 0 ||
((md->poptions & PCRE_DOLLAR_ENDONLY) == 0 && IS_NEWLINE(ptr) &&
(ptr == end_subject - md->nllen)
))
{ ADD_ACTIVE(state_offset + 1, 0); }
else if (ptr + 1 >= md->end_subject &&
(md->moptions & (PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT)) != 0 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
if ((md->moptions & PCRE_PARTIAL_HARD) != 0)
{
reset_could_continue = TRUE;
ADD_NEW_DATA(-(state_offset + 1), 0, 1);
}
else could_continue = partial_newline = TRUE;
}
}
break;
/*-----------------------------------------------------------------*/
case OP_DOLLM:
if ((md->moptions & PCRE_NOTEOL) == 0)
{
if (clen == 0 && (md->moptions & PCRE_PARTIAL_HARD) != 0)
could_continue = TRUE;
else if (clen == 0 ||
((md->poptions & PCRE_DOLLAR_ENDONLY) == 0 && IS_NEWLINE(ptr)))
{ ADD_ACTIVE(state_offset + 1, 0); }
else if (ptr + 1 >= md->end_subject &&
(md->moptions & (PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT)) != 0 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
if ((md->moptions & PCRE_PARTIAL_HARD) != 0)
{
reset_could_continue = TRUE;
ADD_NEW_DATA(-(state_offset + 1), 0, 1);
}
else could_continue = partial_newline = TRUE;
}
}
else if (IS_NEWLINE(ptr))
{ ADD_ACTIVE(state_offset + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_DIGIT:
case OP_WHITESPACE:
case OP_WORDCHAR:
if (clen > 0 && c < 256 &&
((ctypes[c] & toptable1[codevalue]) ^ toptable2[codevalue]) != 0)
{ ADD_NEW(state_offset + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_NOT_DIGIT:
case OP_NOT_WHITESPACE:
case OP_NOT_WORDCHAR:
if (clen > 0 && (c >= 256 ||
((ctypes[c] & toptable1[codevalue]) ^ toptable2[codevalue]) != 0))
{ ADD_NEW(state_offset + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_WORD_BOUNDARY:
case OP_NOT_WORD_BOUNDARY:
{
int left_word, right_word;
if (ptr > start_subject)
{
const pcre_uchar *temp = ptr - 1;
if (temp < md->start_used_ptr) md->start_used_ptr = temp;
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf) { BACKCHAR(temp); }
#endif
GETCHARTEST(d, temp);
#ifdef SUPPORT_UCP
if ((md->poptions & PCRE_UCP) != 0)
{
if (d == '_') left_word = TRUE; else
{
int cat = UCD_CATEGORY(d);
left_word = (cat == ucp_L || cat == ucp_N);
}
}
else
#endif
left_word = d < 256 && (ctypes[d] & ctype_word) != 0;
}
else left_word = FALSE;
if (clen > 0)
{
#ifdef SUPPORT_UCP
if ((md->poptions & PCRE_UCP) != 0)
{
if (c == '_') right_word = TRUE; else
{
int cat = UCD_CATEGORY(c);
right_word = (cat == ucp_L || cat == ucp_N);
}
}
else
#endif
right_word = c < 256 && (ctypes[c] & ctype_word) != 0;
}
else right_word = FALSE;
if ((left_word == right_word) == (codevalue == OP_NOT_WORD_BOUNDARY))
{ ADD_ACTIVE(state_offset + 1, 0); }
}
break;
/*-----------------------------------------------------------------*/
/* Check the next character by Unicode property. We will get here only
if the support is in the binary; otherwise a compile-time error occurs.
*/
#ifdef SUPPORT_UCP
case OP_PROP:
case OP_NOTPROP:
if (clen > 0)
{
BOOL OK;
const pcre_uint32 *cp;
const ucd_record * prop = GET_UCD(c);
switch(code[1])
{
case PT_ANY:
OK = TRUE;
break;
case PT_LAMP:
OK = prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
prop->chartype == ucp_Lt;
break;
case PT_GC:
OK = PRIV(ucp_gentype)[prop->chartype] == code[2];
break;
case PT_PC:
OK = prop->chartype == code[2];
break;
case PT_SC:
OK = prop->script == code[2];
break;
/* These are specials for combination cases. */
case PT_ALNUM:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N;
break;
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
OK = TRUE;
break;
default:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_Z;
break;
}
break;
case PT_WORD:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N ||
c == CHAR_UNDERSCORE;
break;
case PT_CLIST:
cp = PRIV(ucd_caseless_sets) + code[2];
for (;;)
{
if (c < *cp) { OK = FALSE; break; }
if (c == *cp++) { OK = TRUE; break; }
}
break;
case PT_UCNC:
OK = c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
c >= 0xe000;
break;
/* Should never occur, but keep compilers from grumbling. */
default:
OK = codevalue != OP_PROP;
break;
}
if (OK == (codevalue == OP_PROP)) { ADD_NEW(state_offset + 3, 0); }
}
break;
#endif
/* ========================================================================== */
/* These opcodes likewise inspect the subject character, but have an
argument that is not a data character. It is one of these opcodes:
OP_ANY, OP_ALLANY, OP_DIGIT, OP_NOT_DIGIT, OP_WHITESPACE, OP_NOT_SPACE,
OP_WORDCHAR, OP_NOT_WORDCHAR. The value is loaded into d. */
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEPOSPLUS:
count = current_state->count; /* Already matched */
if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
if (clen > 0)
{
if (d == OP_ANY && ptr + 1 >= md->end_subject &&
(md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
could_continue = partial_newline = TRUE;
}
else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
(c < 256 &&
(d != OP_ANY || !IS_NEWLINE(ptr)) &&
((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
{
if (count > 0 && codevalue == OP_TYPEPOSPLUS)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
count++;
ADD_NEW(state_offset, count);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
case OP_TYPEPOSQUERY:
ADD_ACTIVE(state_offset + 2, 0);
if (clen > 0)
{
if (d == OP_ANY && ptr + 1 >= md->end_subject &&
(md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
could_continue = partial_newline = TRUE;
}
else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
(c < 256 &&
(d != OP_ANY || !IS_NEWLINE(ptr)) &&
((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
{
if (codevalue == OP_TYPEPOSQUERY)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW(state_offset + 2, 0);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPOSSTAR:
ADD_ACTIVE(state_offset + 2, 0);
if (clen > 0)
{
if (d == OP_ANY && ptr + 1 >= md->end_subject &&
(md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
could_continue = partial_newline = TRUE;
}
else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
(c < 256 &&
(d != OP_ANY || !IS_NEWLINE(ptr)) &&
((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
{
if (codevalue == OP_TYPEPOSSTAR)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW(state_offset, 0);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_TYPEEXACT:
count = current_state->count; /* Number already matched */
if (clen > 0)
{
if (d == OP_ANY && ptr + 1 >= md->end_subject &&
(md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
could_continue = partial_newline = TRUE;
}
else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
(c < 256 &&
(d != OP_ANY || !IS_NEWLINE(ptr)) &&
((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
{
if (++count >= (int)GET2(code, 1))
{ ADD_NEW(state_offset + 1 + IMM2_SIZE + 1, 0); }
else
{ ADD_NEW(state_offset, count); }
}
}
break;
/*-----------------------------------------------------------------*/
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
case OP_TYPEPOSUPTO:
ADD_ACTIVE(state_offset + 2 + IMM2_SIZE, 0);
count = current_state->count; /* Number already matched */
if (clen > 0)
{
if (d == OP_ANY && ptr + 1 >= md->end_subject &&
(md->moptions & (PCRE_PARTIAL_HARD)) != 0 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
could_continue = partial_newline = TRUE;
}
else if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
(c < 256 &&
(d != OP_ANY || !IS_NEWLINE(ptr)) &&
((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
{
if (codevalue == OP_TYPEPOSUPTO)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
if (++count >= (int)GET2(code, 1))
{ ADD_NEW(state_offset + 2 + IMM2_SIZE, 0); }
else
{ ADD_NEW(state_offset, count); }
}
}
break;
/* ========================================================================== */
/* These are virtual opcodes that are used when something like
OP_TYPEPLUS has OP_PROP, OP_NOTPROP, OP_ANYNL, or OP_EXTUNI as its
argument. It keeps the code above fast for the other cases. The argument
is in the d variable. */
#ifdef SUPPORT_UCP
case OP_PROP_EXTRA + OP_TYPEPLUS:
case OP_PROP_EXTRA + OP_TYPEMINPLUS:
case OP_PROP_EXTRA + OP_TYPEPOSPLUS:
count = current_state->count; /* Already matched */
if (count > 0) { ADD_ACTIVE(state_offset + 4, 0); }
if (clen > 0)
{
BOOL OK;
const pcre_uint32 *cp;
const ucd_record * prop = GET_UCD(c);
switch(code[2])
{
case PT_ANY:
OK = TRUE;
break;
case PT_LAMP:
OK = prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
prop->chartype == ucp_Lt;
break;
case PT_GC:
OK = PRIV(ucp_gentype)[prop->chartype] == code[3];
break;
case PT_PC:
OK = prop->chartype == code[3];
break;
case PT_SC:
OK = prop->script == code[3];
break;
/* These are specials for combination cases. */
case PT_ALNUM:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N;
break;
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
OK = TRUE;
break;
default:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_Z;
break;
}
break;
case PT_WORD:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N ||
c == CHAR_UNDERSCORE;
break;
case PT_CLIST:
cp = PRIV(ucd_caseless_sets) + code[3];
for (;;)
{
if (c < *cp) { OK = FALSE; break; }
if (c == *cp++) { OK = TRUE; break; }
}
break;
case PT_UCNC:
OK = c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
c >= 0xe000;
break;
/* Should never occur, but keep compilers from grumbling. */
default:
OK = codevalue != OP_PROP;
break;
}
if (OK == (d == OP_PROP))
{
if (count > 0 && codevalue == OP_PROP_EXTRA + OP_TYPEPOSPLUS)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
count++;
ADD_NEW(state_offset, count);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_EXTUNI_EXTRA + OP_TYPEPLUS:
case OP_EXTUNI_EXTRA + OP_TYPEMINPLUS:
case OP_EXTUNI_EXTRA + OP_TYPEPOSPLUS:
count = current_state->count; /* Already matched */
if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
if (clen > 0)
{
int lgb, rgb;
const pcre_uchar *nptr = ptr + clen;
int ncount = 0;
if (count > 0 && codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSPLUS)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
lgb = UCD_GRAPHBREAK(c);
while (nptr < end_subject)
{
dlen = 1;
if (!utf) d = *nptr; else { GETCHARLEN(d, nptr, dlen); }
rgb = UCD_GRAPHBREAK(d);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
ncount++;
lgb = rgb;
nptr += dlen;
}
count++;
ADD_NEW_DATA(-state_offset, count, ncount);
}
break;
#endif
/*-----------------------------------------------------------------*/
case OP_ANYNL_EXTRA + OP_TYPEPLUS:
case OP_ANYNL_EXTRA + OP_TYPEMINPLUS:
case OP_ANYNL_EXTRA + OP_TYPEPOSPLUS:
count = current_state->count; /* Already matched */
if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
if (clen > 0)
{
int ncount = 0;
switch (c)
{
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#ifndef EBCDIC
case 0x2028:
case 0x2029:
#endif /* Not EBCDIC */
if ((md->moptions & PCRE_BSR_ANYCRLF) != 0) break;
goto ANYNL01;
case CHAR_CR:
if (ptr + 1 < end_subject && UCHAR21TEST(ptr + 1) == CHAR_LF) ncount = 1;
/* Fall through */
ANYNL01:
case CHAR_LF:
if (count > 0 && codevalue == OP_ANYNL_EXTRA + OP_TYPEPOSPLUS)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
count++;
ADD_NEW_DATA(-state_offset, count, ncount);
break;
default:
break;
}
}
break;
/*-----------------------------------------------------------------*/
case OP_VSPACE_EXTRA + OP_TYPEPLUS:
case OP_VSPACE_EXTRA + OP_TYPEMINPLUS:
case OP_VSPACE_EXTRA + OP_TYPEPOSPLUS:
count = current_state->count; /* Already matched */
if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
if (clen > 0)
{
BOOL OK;
switch (c)
{
VSPACE_CASES:
OK = TRUE;
break;
default:
OK = FALSE;
break;
}
if (OK == (d == OP_VSPACE))
{
if (count > 0 && codevalue == OP_VSPACE_EXTRA + OP_TYPEPOSPLUS)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
count++;
ADD_NEW_DATA(-state_offset, count, 0);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_HSPACE_EXTRA + OP_TYPEPLUS:
case OP_HSPACE_EXTRA + OP_TYPEMINPLUS:
case OP_HSPACE_EXTRA + OP_TYPEPOSPLUS:
count = current_state->count; /* Already matched */
if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
if (clen > 0)
{
BOOL OK;
switch (c)
{
HSPACE_CASES:
OK = TRUE;
break;
default:
OK = FALSE;
break;
}
if (OK == (d == OP_HSPACE))
{
if (count > 0 && codevalue == OP_HSPACE_EXTRA + OP_TYPEPOSPLUS)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
count++;
ADD_NEW_DATA(-state_offset, count, 0);
}
}
break;
/*-----------------------------------------------------------------*/
#ifdef SUPPORT_UCP
case OP_PROP_EXTRA + OP_TYPEQUERY:
case OP_PROP_EXTRA + OP_TYPEMINQUERY:
case OP_PROP_EXTRA + OP_TYPEPOSQUERY:
count = 4;
goto QS1;
case OP_PROP_EXTRA + OP_TYPESTAR:
case OP_PROP_EXTRA + OP_TYPEMINSTAR:
case OP_PROP_EXTRA + OP_TYPEPOSSTAR:
count = 0;
QS1:
ADD_ACTIVE(state_offset + 4, 0);
if (clen > 0)
{
BOOL OK;
const pcre_uint32 *cp;
const ucd_record * prop = GET_UCD(c);
switch(code[2])
{
case PT_ANY:
OK = TRUE;
break;
case PT_LAMP:
OK = prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
prop->chartype == ucp_Lt;
break;
case PT_GC:
OK = PRIV(ucp_gentype)[prop->chartype] == code[3];
break;
case PT_PC:
OK = prop->chartype == code[3];
break;
case PT_SC:
OK = prop->script == code[3];
break;
/* These are specials for combination cases. */
case PT_ALNUM:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N;
break;
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
OK = TRUE;
break;
default:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_Z;
break;
}
break;
case PT_WORD:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N ||
c == CHAR_UNDERSCORE;
break;
case PT_CLIST:
cp = PRIV(ucd_caseless_sets) + code[3];
for (;;)
{
if (c < *cp) { OK = FALSE; break; }
if (c == *cp++) { OK = TRUE; break; }
}
break;
case PT_UCNC:
OK = c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
c >= 0xe000;
break;
/* Should never occur, but keep compilers from grumbling. */
default:
OK = codevalue != OP_PROP;
break;
}
if (OK == (d == OP_PROP))
{
if (codevalue == OP_PROP_EXTRA + OP_TYPEPOSSTAR ||
codevalue == OP_PROP_EXTRA + OP_TYPEPOSQUERY)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW(state_offset + count, 0);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_EXTUNI_EXTRA + OP_TYPEQUERY:
case OP_EXTUNI_EXTRA + OP_TYPEMINQUERY:
case OP_EXTUNI_EXTRA + OP_TYPEPOSQUERY:
count = 2;
goto QS2;
case OP_EXTUNI_EXTRA + OP_TYPESTAR:
case OP_EXTUNI_EXTRA + OP_TYPEMINSTAR:
case OP_EXTUNI_EXTRA + OP_TYPEPOSSTAR:
count = 0;
QS2:
ADD_ACTIVE(state_offset + 2, 0);
if (clen > 0)
{
int lgb, rgb;
const pcre_uchar *nptr = ptr + clen;
int ncount = 0;
if (codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSSTAR ||
codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSQUERY)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
lgb = UCD_GRAPHBREAK(c);
while (nptr < end_subject)
{
dlen = 1;
if (!utf) d = *nptr; else { GETCHARLEN(d, nptr, dlen); }
rgb = UCD_GRAPHBREAK(d);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
ncount++;
lgb = rgb;
nptr += dlen;
}
ADD_NEW_DATA(-(state_offset + count), 0, ncount);
}
break;
#endif
/*-----------------------------------------------------------------*/
case OP_ANYNL_EXTRA + OP_TYPEQUERY:
case OP_ANYNL_EXTRA + OP_TYPEMINQUERY:
case OP_ANYNL_EXTRA + OP_TYPEPOSQUERY:
count = 2;
goto QS3;
case OP_ANYNL_EXTRA + OP_TYPESTAR:
case OP_ANYNL_EXTRA + OP_TYPEMINSTAR:
case OP_ANYNL_EXTRA + OP_TYPEPOSSTAR:
count = 0;
QS3:
ADD_ACTIVE(state_offset + 2, 0);
if (clen > 0)
{
int ncount = 0;
switch (c)
{
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#ifndef EBCDIC
case 0x2028:
case 0x2029:
#endif /* Not EBCDIC */
if ((md->moptions & PCRE_BSR_ANYCRLF) != 0) break;
goto ANYNL02;
case CHAR_CR:
if (ptr + 1 < end_subject && UCHAR21TEST(ptr + 1) == CHAR_LF) ncount = 1;
/* Fall through */
ANYNL02:
case CHAR_LF:
if (codevalue == OP_ANYNL_EXTRA + OP_TYPEPOSSTAR ||
codevalue == OP_ANYNL_EXTRA + OP_TYPEPOSQUERY)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW_DATA(-(state_offset + (int)count), 0, ncount);
break;
default:
break;
}
}
break;
/*-----------------------------------------------------------------*/
case OP_VSPACE_EXTRA + OP_TYPEQUERY:
case OP_VSPACE_EXTRA + OP_TYPEMINQUERY:
case OP_VSPACE_EXTRA + OP_TYPEPOSQUERY:
count = 2;
goto QS4;
case OP_VSPACE_EXTRA + OP_TYPESTAR:
case OP_VSPACE_EXTRA + OP_TYPEMINSTAR:
case OP_VSPACE_EXTRA + OP_TYPEPOSSTAR:
count = 0;
QS4:
ADD_ACTIVE(state_offset + 2, 0);
if (clen > 0)
{
BOOL OK;
switch (c)
{
VSPACE_CASES:
OK = TRUE;
break;
default:
OK = FALSE;
break;
}
if (OK == (d == OP_VSPACE))
{
if (codevalue == OP_VSPACE_EXTRA + OP_TYPEPOSSTAR ||
codevalue == OP_VSPACE_EXTRA + OP_TYPEPOSQUERY)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW_DATA(-(state_offset + (int)count), 0, 0);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_HSPACE_EXTRA + OP_TYPEQUERY:
case OP_HSPACE_EXTRA + OP_TYPEMINQUERY:
case OP_HSPACE_EXTRA + OP_TYPEPOSQUERY:
count = 2;
goto QS5;
case OP_HSPACE_EXTRA + OP_TYPESTAR:
case OP_HSPACE_EXTRA + OP_TYPEMINSTAR:
case OP_HSPACE_EXTRA + OP_TYPEPOSSTAR:
count = 0;
QS5:
ADD_ACTIVE(state_offset + 2, 0);
if (clen > 0)
{
BOOL OK;
switch (c)
{
HSPACE_CASES:
OK = TRUE;
break;
default:
OK = FALSE;
break;
}
if (OK == (d == OP_HSPACE))
{
if (codevalue == OP_HSPACE_EXTRA + OP_TYPEPOSSTAR ||
codevalue == OP_HSPACE_EXTRA + OP_TYPEPOSQUERY)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW_DATA(-(state_offset + (int)count), 0, 0);
}
}
break;
/*-----------------------------------------------------------------*/
#ifdef SUPPORT_UCP
case OP_PROP_EXTRA + OP_TYPEEXACT:
case OP_PROP_EXTRA + OP_TYPEUPTO:
case OP_PROP_EXTRA + OP_TYPEMINUPTO:
case OP_PROP_EXTRA + OP_TYPEPOSUPTO:
if (codevalue != OP_PROP_EXTRA + OP_TYPEEXACT)
{ ADD_ACTIVE(state_offset + 1 + IMM2_SIZE + 3, 0); }
count = current_state->count; /* Number already matched */
if (clen > 0)
{
BOOL OK;
const pcre_uint32 *cp;
const ucd_record * prop = GET_UCD(c);
switch(code[1 + IMM2_SIZE + 1])
{
case PT_ANY:
OK = TRUE;
break;
case PT_LAMP:
OK = prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
prop->chartype == ucp_Lt;
break;
case PT_GC:
OK = PRIV(ucp_gentype)[prop->chartype] == code[1 + IMM2_SIZE + 2];
break;
case PT_PC:
OK = prop->chartype == code[1 + IMM2_SIZE + 2];
break;
case PT_SC:
OK = prop->script == code[1 + IMM2_SIZE + 2];
break;
/* These are specials for combination cases. */
case PT_ALNUM:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N;
break;
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
OK = TRUE;
break;
default:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_Z;
break;
}
break;
case PT_WORD:
OK = PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N ||
c == CHAR_UNDERSCORE;
break;
case PT_CLIST:
cp = PRIV(ucd_caseless_sets) + code[1 + IMM2_SIZE + 2];
for (;;)
{
if (c < *cp) { OK = FALSE; break; }
if (c == *cp++) { OK = TRUE; break; }
}
break;
case PT_UCNC:
OK = c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
c >= 0xe000;
break;
/* Should never occur, but keep compilers from grumbling. */
default:
OK = codevalue != OP_PROP;
break;
}
if (OK == (d == OP_PROP))
{
if (codevalue == OP_PROP_EXTRA + OP_TYPEPOSUPTO)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
if (++count >= (int)GET2(code, 1))
{ ADD_NEW(state_offset + 1 + IMM2_SIZE + 3, 0); }
else
{ ADD_NEW(state_offset, count); }
}
}
break;
/*-----------------------------------------------------------------*/
case OP_EXTUNI_EXTRA + OP_TYPEEXACT:
case OP_EXTUNI_EXTRA + OP_TYPEUPTO:
case OP_EXTUNI_EXTRA + OP_TYPEMINUPTO:
case OP_EXTUNI_EXTRA + OP_TYPEPOSUPTO:
if (codevalue != OP_EXTUNI_EXTRA + OP_TYPEEXACT)
{ ADD_ACTIVE(state_offset + 2 + IMM2_SIZE, 0); }
count = current_state->count; /* Number already matched */
if (clen > 0)
{
int lgb, rgb;
const pcre_uchar *nptr = ptr + clen;
int ncount = 0;
if (codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSUPTO)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
lgb = UCD_GRAPHBREAK(c);
while (nptr < end_subject)
{
dlen = 1;
if (!utf) d = *nptr; else { GETCHARLEN(d, nptr, dlen); }
rgb = UCD_GRAPHBREAK(d);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
ncount++;
lgb = rgb;
nptr += dlen;
}
if (nptr >= end_subject && (md->moptions & PCRE_PARTIAL_HARD) != 0)
reset_could_continue = TRUE;
if (++count >= (int)GET2(code, 1))
{ ADD_NEW_DATA(-(state_offset + 2 + IMM2_SIZE), 0, ncount); }
else
{ ADD_NEW_DATA(-state_offset, count, ncount); }
}
break;
#endif
/*-----------------------------------------------------------------*/
case OP_ANYNL_EXTRA + OP_TYPEEXACT:
case OP_ANYNL_EXTRA + OP_TYPEUPTO:
case OP_ANYNL_EXTRA + OP_TYPEMINUPTO:
case OP_ANYNL_EXTRA + OP_TYPEPOSUPTO:
if (codevalue != OP_ANYNL_EXTRA + OP_TYPEEXACT)
{ ADD_ACTIVE(state_offset + 2 + IMM2_SIZE, 0); }
count = current_state->count; /* Number already matched */
if (clen > 0)
{
int ncount = 0;
switch (c)
{
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#ifndef EBCDIC
case 0x2028:
case 0x2029:
#endif /* Not EBCDIC */
if ((md->moptions & PCRE_BSR_ANYCRLF) != 0) break;
goto ANYNL03;
case CHAR_CR:
if (ptr + 1 < end_subject && UCHAR21TEST(ptr + 1) == CHAR_LF) ncount = 1;
/* Fall through */
ANYNL03:
case CHAR_LF:
if (codevalue == OP_ANYNL_EXTRA + OP_TYPEPOSUPTO)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
if (++count >= (int)GET2(code, 1))
{ ADD_NEW_DATA(-(state_offset + 2 + IMM2_SIZE), 0, ncount); }
else
{ ADD_NEW_DATA(-state_offset, count, ncount); }
break;
default:
break;
}
}
break;
/*-----------------------------------------------------------------*/
case OP_VSPACE_EXTRA + OP_TYPEEXACT:
case OP_VSPACE_EXTRA + OP_TYPEUPTO:
case OP_VSPACE_EXTRA + OP_TYPEMINUPTO:
case OP_VSPACE_EXTRA + OP_TYPEPOSUPTO:
if (codevalue != OP_VSPACE_EXTRA + OP_TYPEEXACT)
{ ADD_ACTIVE(state_offset + 2 + IMM2_SIZE, 0); }
count = current_state->count; /* Number already matched */
if (clen > 0)
{
BOOL OK;
switch (c)
{
VSPACE_CASES:
OK = TRUE;
break;
default:
OK = FALSE;
}
if (OK == (d == OP_VSPACE))
{
if (codevalue == OP_VSPACE_EXTRA + OP_TYPEPOSUPTO)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
if (++count >= (int)GET2(code, 1))
{ ADD_NEW_DATA(-(state_offset + 2 + IMM2_SIZE), 0, 0); }
else
{ ADD_NEW_DATA(-state_offset, count, 0); }
}
}
break;
/*-----------------------------------------------------------------*/
case OP_HSPACE_EXTRA + OP_TYPEEXACT:
case OP_HSPACE_EXTRA + OP_TYPEUPTO:
case OP_HSPACE_EXTRA + OP_TYPEMINUPTO:
case OP_HSPACE_EXTRA + OP_TYPEPOSUPTO:
if (codevalue != OP_HSPACE_EXTRA + OP_TYPEEXACT)
{ ADD_ACTIVE(state_offset + 2 + IMM2_SIZE, 0); }
count = current_state->count; /* Number already matched */
if (clen > 0)
{
BOOL OK;
switch (c)
{
HSPACE_CASES:
OK = TRUE;
break;
default:
OK = FALSE;
break;
}
if (OK == (d == OP_HSPACE))
{
if (codevalue == OP_HSPACE_EXTRA + OP_TYPEPOSUPTO)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
if (++count >= (int)GET2(code, 1))
{ ADD_NEW_DATA(-(state_offset + 2 + IMM2_SIZE), 0, 0); }
else
{ ADD_NEW_DATA(-state_offset, count, 0); }
}
}
break;
/* ========================================================================== */
/* These opcodes are followed by a character that is usually compared
to the current subject character; it is loaded into d. We still get
here even if there is no subject character, because in some cases zero
repetitions are permitted. */
/*-----------------------------------------------------------------*/
case OP_CHAR:
if (clen > 0 && c == d) { ADD_NEW(state_offset + dlen + 1, 0); }
break;
/*-----------------------------------------------------------------*/
case OP_CHARI:
if (clen == 0) break;
#ifdef SUPPORT_UTF
if (utf)
{
if (c == d) { ADD_NEW(state_offset + dlen + 1, 0); } else
{
unsigned int othercase;
if (c < 128)
othercase = fcc[c];
else
/* If we have Unicode property support, we can use it to test the
other case of the character. */
#ifdef SUPPORT_UCP
othercase = UCD_OTHERCASE(c);
#else
othercase = NOTACHAR;
#endif
if (d == othercase) { ADD_NEW(state_offset + dlen + 1, 0); }
}
}
else
#endif /* SUPPORT_UTF */
/* Not UTF mode */
{
if (TABLE_GET(c, lcc, c) == TABLE_GET(d, lcc, d))
{ ADD_NEW(state_offset + 2, 0); }
}
break;
#ifdef SUPPORT_UCP
/*-----------------------------------------------------------------*/
/* This is a tricky one because it can match more than one character.
Find out how many characters to skip, and then set up a negative state
to wait for them to pass before continuing. */
case OP_EXTUNI:
if (clen > 0)
{
int lgb, rgb;
const pcre_uchar *nptr = ptr + clen;
int ncount = 0;
lgb = UCD_GRAPHBREAK(c);
while (nptr < end_subject)
{
dlen = 1;
if (!utf) d = *nptr; else { GETCHARLEN(d, nptr, dlen); }
rgb = UCD_GRAPHBREAK(d);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
ncount++;
lgb = rgb;
nptr += dlen;
}
if (nptr >= end_subject && (md->moptions & PCRE_PARTIAL_HARD) != 0)
reset_could_continue = TRUE;
ADD_NEW_DATA(-(state_offset + 1), 0, ncount);
}
break;
#endif
/*-----------------------------------------------------------------*/
/* This is a tricky like EXTUNI because it too can match more than one
character (when CR is followed by LF). In this case, set up a negative
state to wait for one character to pass before continuing. */
case OP_ANYNL:
if (clen > 0) switch(c)
{
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#ifndef EBCDIC
case 0x2028:
case 0x2029:
#endif /* Not EBCDIC */
if ((md->moptions & PCRE_BSR_ANYCRLF) != 0) break;
case CHAR_LF:
ADD_NEW(state_offset + 1, 0);
break;
case CHAR_CR:
if (ptr + 1 >= end_subject)
{
ADD_NEW(state_offset + 1, 0);
if ((md->moptions & PCRE_PARTIAL_HARD) != 0)
reset_could_continue = TRUE;
}
else if (UCHAR21TEST(ptr + 1) == CHAR_LF)
{
ADD_NEW_DATA(-(state_offset + 1), 0, 1);
}
else
{
ADD_NEW(state_offset + 1, 0);
}
break;
}
break;
/*-----------------------------------------------------------------*/
case OP_NOT_VSPACE:
if (clen > 0) switch(c)
{
VSPACE_CASES:
break;
default:
ADD_NEW(state_offset + 1, 0);
break;
}
break;
/*-----------------------------------------------------------------*/
case OP_VSPACE:
if (clen > 0) switch(c)
{
VSPACE_CASES:
ADD_NEW(state_offset + 1, 0);
break;
default:
break;
}
break;
/*-----------------------------------------------------------------*/
case OP_NOT_HSPACE:
if (clen > 0) switch(c)
{
HSPACE_CASES:
break;
default:
ADD_NEW(state_offset + 1, 0);
break;
}
break;
/*-----------------------------------------------------------------*/
case OP_HSPACE:
if (clen > 0) switch(c)
{
HSPACE_CASES:
ADD_NEW(state_offset + 1, 0);
break;
default:
break;
}
break;
/*-----------------------------------------------------------------*/
/* Match a negated single character casefully. */
case OP_NOT:
if (clen > 0 && c != d) { ADD_NEW(state_offset + dlen + 1, 0); }
break;
/*-----------------------------------------------------------------*/
/* Match a negated single character caselessly. */
case OP_NOTI:
if (clen > 0)
{
pcre_uint32 otherd;
#ifdef SUPPORT_UTF
if (utf && d >= 128)
{
#ifdef SUPPORT_UCP
otherd = UCD_OTHERCASE(d);
#else
otherd = d;
#endif /* SUPPORT_UCP */
}
else
#endif /* SUPPORT_UTF */
otherd = TABLE_GET(d, fcc, d);
if (c != d && c != otherd)
{ ADD_NEW(state_offset + dlen + 1, 0); }
}
break;
/*-----------------------------------------------------------------*/
case OP_PLUSI:
case OP_MINPLUSI:
case OP_POSPLUSI:
case OP_NOTPLUSI:
case OP_NOTMINPLUSI:
case OP_NOTPOSPLUSI:
caseless = TRUE;
codevalue -= OP_STARI - OP_STAR;
/* Fall through */
case OP_PLUS:
case OP_MINPLUS:
case OP_POSPLUS:
case OP_NOTPLUS:
case OP_NOTMINPLUS:
case OP_NOTPOSPLUS:
count = current_state->count; /* Already matched */
if (count > 0) { ADD_ACTIVE(state_offset + dlen + 1, 0); }
if (clen > 0)
{
pcre_uint32 otherd = NOTACHAR;
if (caseless)
{
#ifdef SUPPORT_UTF
if (utf && d >= 128)
{
#ifdef SUPPORT_UCP
otherd = UCD_OTHERCASE(d);
#endif /* SUPPORT_UCP */
}
else
#endif /* SUPPORT_UTF */
otherd = TABLE_GET(d, fcc, d);
}
if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
{
if (count > 0 &&
(codevalue == OP_POSPLUS || codevalue == OP_NOTPOSPLUS))
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
count++;
ADD_NEW(state_offset, count);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_QUERYI:
case OP_MINQUERYI:
case OP_POSQUERYI:
case OP_NOTQUERYI:
case OP_NOTMINQUERYI:
case OP_NOTPOSQUERYI:
caseless = TRUE;
codevalue -= OP_STARI - OP_STAR;
/* Fall through */
case OP_QUERY:
case OP_MINQUERY:
case OP_POSQUERY:
case OP_NOTQUERY:
case OP_NOTMINQUERY:
case OP_NOTPOSQUERY:
ADD_ACTIVE(state_offset + dlen + 1, 0);
if (clen > 0)
{
pcre_uint32 otherd = NOTACHAR;
if (caseless)
{
#ifdef SUPPORT_UTF
if (utf && d >= 128)
{
#ifdef SUPPORT_UCP
otherd = UCD_OTHERCASE(d);
#endif /* SUPPORT_UCP */
}
else
#endif /* SUPPORT_UTF */
otherd = TABLE_GET(d, fcc, d);
}
if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
{
if (codevalue == OP_POSQUERY || codevalue == OP_NOTPOSQUERY)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW(state_offset + dlen + 1, 0);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_STARI:
case OP_MINSTARI:
case OP_POSSTARI:
case OP_NOTSTARI:
case OP_NOTMINSTARI:
case OP_NOTPOSSTARI:
caseless = TRUE;
codevalue -= OP_STARI - OP_STAR;
/* Fall through */
case OP_STAR:
case OP_MINSTAR:
case OP_POSSTAR:
case OP_NOTSTAR:
case OP_NOTMINSTAR:
case OP_NOTPOSSTAR:
ADD_ACTIVE(state_offset + dlen + 1, 0);
if (clen > 0)
{
pcre_uint32 otherd = NOTACHAR;
if (caseless)
{
#ifdef SUPPORT_UTF
if (utf && d >= 128)
{
#ifdef SUPPORT_UCP
otherd = UCD_OTHERCASE(d);
#endif /* SUPPORT_UCP */
}
else
#endif /* SUPPORT_UTF */
otherd = TABLE_GET(d, fcc, d);
}
if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
{
if (codevalue == OP_POSSTAR || codevalue == OP_NOTPOSSTAR)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW(state_offset, 0);
}
}
break;
/*-----------------------------------------------------------------*/
case OP_EXACTI:
case OP_NOTEXACTI:
caseless = TRUE;
codevalue -= OP_STARI - OP_STAR;
/* Fall through */
case OP_EXACT:
case OP_NOTEXACT:
count = current_state->count; /* Number already matched */
if (clen > 0)
{
pcre_uint32 otherd = NOTACHAR;
if (caseless)
{
#ifdef SUPPORT_UTF
if (utf && d >= 128)
{
#ifdef SUPPORT_UCP
otherd = UCD_OTHERCASE(d);
#endif /* SUPPORT_UCP */
}
else
#endif /* SUPPORT_UTF */
otherd = TABLE_GET(d, fcc, d);
}
if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
{
if (++count >= (int)GET2(code, 1))
{ ADD_NEW(state_offset + dlen + 1 + IMM2_SIZE, 0); }
else
{ ADD_NEW(state_offset, count); }
}
}
break;
/*-----------------------------------------------------------------*/
case OP_UPTOI:
case OP_MINUPTOI:
case OP_POSUPTOI:
case OP_NOTUPTOI:
case OP_NOTMINUPTOI:
case OP_NOTPOSUPTOI:
caseless = TRUE;
codevalue -= OP_STARI - OP_STAR;
/* Fall through */
case OP_UPTO:
case OP_MINUPTO:
case OP_POSUPTO:
case OP_NOTUPTO:
case OP_NOTMINUPTO:
case OP_NOTPOSUPTO:
ADD_ACTIVE(state_offset + dlen + 1 + IMM2_SIZE, 0);
count = current_state->count; /* Number already matched */
if (clen > 0)
{
pcre_uint32 otherd = NOTACHAR;
if (caseless)
{
#ifdef SUPPORT_UTF
if (utf && d >= 128)
{
#ifdef SUPPORT_UCP
otherd = UCD_OTHERCASE(d);
#endif /* SUPPORT_UCP */
}
else
#endif /* SUPPORT_UTF */
otherd = TABLE_GET(d, fcc, d);
}
if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
{
if (codevalue == OP_POSUPTO || codevalue == OP_NOTPOSUPTO)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
if (++count >= (int)GET2(code, 1))
{ ADD_NEW(state_offset + dlen + 1 + IMM2_SIZE, 0); }
else
{ ADD_NEW(state_offset, count); }
}
}
break;
/* ========================================================================== */
/* These are the class-handling opcodes */
case OP_CLASS:
case OP_NCLASS:
case OP_XCLASS:
{
BOOL isinclass = FALSE;
int next_state_offset;
const pcre_uchar *ecode;
/* For a simple class, there is always just a 32-byte table, and we
can set isinclass from it. */
if (codevalue != OP_XCLASS)
{
ecode = code + 1 + (32 / sizeof(pcre_uchar));
if (clen > 0)
{
isinclass = (c > 255)? (codevalue == OP_NCLASS) :
((((pcre_uint8 *)(code + 1))[c/8] & (1 << (c&7))) != 0);
}
}
/* An extended class may have a table or a list of single characters,
ranges, or both, and it may be positive or negative. There's a
function that sorts all this out. */
else
{
ecode = code + GET(code, 1);
if (clen > 0) isinclass = PRIV(xclass)(c, code + 1 + LINK_SIZE, utf);
}
/* At this point, isinclass is set for all kinds of class, and ecode
points to the byte after the end of the class. If there is a
quantifier, this is where it will be. */
next_state_offset = (int)(ecode - start_code);
switch (*ecode)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPOSSTAR:
ADD_ACTIVE(next_state_offset + 1, 0);
if (isinclass)
{
if (*ecode == OP_CRPOSSTAR)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW(state_offset, 0);
}
break;
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRPOSPLUS:
count = current_state->count; /* Already matched */
if (count > 0) { ADD_ACTIVE(next_state_offset + 1, 0); }
if (isinclass)
{
if (count > 0 && *ecode == OP_CRPOSPLUS)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
count++;
ADD_NEW(state_offset, count);
}
break;
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRPOSQUERY:
ADD_ACTIVE(next_state_offset + 1, 0);
if (isinclass)
{
if (*ecode == OP_CRPOSQUERY)
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
ADD_NEW(next_state_offset + 1, 0);
}
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSRANGE:
count = current_state->count; /* Already matched */
if (count >= (int)GET2(ecode, 1))
{ ADD_ACTIVE(next_state_offset + 1 + 2 * IMM2_SIZE, 0); }
if (isinclass)
{
int max = (int)GET2(ecode, 1 + IMM2_SIZE);
if (*ecode == OP_CRPOSRANGE && count >= (int)GET2(ecode, 1))
{
active_count--; /* Remove non-match possibility */
next_active_state--;
}
if (++count >= max && max != 0) /* Max 0 => no limit */
{ ADD_NEW(next_state_offset + 1 + 2 * IMM2_SIZE, 0); }
else
{ ADD_NEW(state_offset, count); }
}
break;
default:
if (isinclass) { ADD_NEW(next_state_offset, 0); }
break;
}
}
break;
/* ========================================================================== */
/* These are the opcodes for fancy brackets of various kinds. We have
to use recursion in order to handle them. The "always failing" assertion
(?!) is optimised to OP_FAIL when compiling, so we have to support that,
though the other "backtracking verbs" are not supported. */
case OP_FAIL:
forced_fail++; /* Count FAILs for multiple states */
break;
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
{
int rc;
int local_offsets[2];
int local_workspace[1000];
const pcre_uchar *endasscode = code + GET(code, 1);
while (*endasscode == OP_ALT) endasscode += GET(endasscode, 1);
rc = internal_dfa_exec(
md, /* static match data */
code, /* this subexpression's code */
ptr, /* where we currently are */
(int)(ptr - start_subject), /* start offset */
local_offsets, /* offset vector */
sizeof(local_offsets)/sizeof(int), /* size of same */
local_workspace, /* workspace vector */
sizeof(local_workspace)/sizeof(int), /* size of same */
rlevel); /* function recursion level */
if (rc == PCRE_ERROR_DFA_UITEM) return rc;
if ((rc >= 0) == (codevalue == OP_ASSERT || codevalue == OP_ASSERTBACK))
{ ADD_ACTIVE((int)(endasscode + LINK_SIZE + 1 - start_code), 0); }
}
break;
/*-----------------------------------------------------------------*/
case OP_COND:
case OP_SCOND:
{
int local_offsets[1000];
int local_workspace[1000];
int codelink = GET(code, 1);
int condcode;
/* Because of the way auto-callout works during compile, a callout item
is inserted between OP_COND and an assertion condition. This does not
happen for the other conditions. */
if (code[LINK_SIZE+1] == OP_CALLOUT)
{
rrc = 0;
if (PUBL(callout) != NULL)
{
PUBL(callout_block) cb;
cb.version = 1; /* Version 1 of the callout block */
cb.callout_number = code[LINK_SIZE+2];
cb.offset_vector = offsets;
#if defined COMPILE_PCRE8
cb.subject = (PCRE_SPTR)start_subject;
#elif defined COMPILE_PCRE16
cb.subject = (PCRE_SPTR16)start_subject;
#elif defined COMPILE_PCRE32
cb.subject = (PCRE_SPTR32)start_subject;
#endif
cb.subject_length = (int)(end_subject - start_subject);
cb.start_match = (int)(current_subject - start_subject);
cb.current_position = (int)(ptr - start_subject);
cb.pattern_position = GET(code, LINK_SIZE + 3);
cb.next_item_length = GET(code, 3 + 2*LINK_SIZE);
cb.capture_top = 1;
cb.capture_last = -1;
cb.callout_data = md->callout_data;
cb.mark = NULL; /* No (*MARK) support */
if ((rrc = (*PUBL(callout))(&cb)) < 0) return rrc; /* Abandon */
}
if (rrc > 0) break; /* Fail this thread */
code += PRIV(OP_lengths)[OP_CALLOUT]; /* Skip callout data */
}
condcode = code[LINK_SIZE+1];
/* Back reference conditions and duplicate named recursion conditions
are not supported */
if (condcode == OP_CREF || condcode == OP_DNCREF ||
condcode == OP_DNRREF)
return PCRE_ERROR_DFA_UCOND;
/* The DEFINE condition is always false, and the assertion (?!) is
converted to OP_FAIL. */
if (condcode == OP_DEF || condcode == OP_FAIL)
{ ADD_ACTIVE(state_offset + codelink + LINK_SIZE + 1, 0); }
/* The only supported version of OP_RREF is for the value RREF_ANY,
which means "test if in any recursion". We can't test for specifically
recursed groups. */
else if (condcode == OP_RREF)
{
int value = GET2(code, LINK_SIZE + 2);
if (value != RREF_ANY) return PCRE_ERROR_DFA_UCOND;
if (md->recursive != NULL)
{ ADD_ACTIVE(state_offset + LINK_SIZE + 2 + IMM2_SIZE, 0); }
else { ADD_ACTIVE(state_offset + codelink + LINK_SIZE + 1, 0); }
}
/* Otherwise, the condition is an assertion */
else
{
int rc;
const pcre_uchar *asscode = code + LINK_SIZE + 1;
const pcre_uchar *endasscode = asscode + GET(asscode, 1);
while (*endasscode == OP_ALT) endasscode += GET(endasscode, 1);
rc = internal_dfa_exec(
md, /* fixed match data */
asscode, /* this subexpression's code */
ptr, /* where we currently are */
(int)(ptr - start_subject), /* start offset */
local_offsets, /* offset vector */
sizeof(local_offsets)/sizeof(int), /* size of same */
local_workspace, /* workspace vector */
sizeof(local_workspace)/sizeof(int), /* size of same */
rlevel); /* function recursion level */
if (rc == PCRE_ERROR_DFA_UITEM) return rc;
if ((rc >= 0) ==
(condcode == OP_ASSERT || condcode == OP_ASSERTBACK))
{ ADD_ACTIVE((int)(endasscode + LINK_SIZE + 1 - start_code), 0); }
else
{ ADD_ACTIVE(state_offset + codelink + LINK_SIZE + 1, 0); }
}
}
break;
/*-----------------------------------------------------------------*/
case OP_RECURSE:
{
dfa_recursion_info *ri;
int local_offsets[1000];
int local_workspace[1000];
const pcre_uchar *callpat = start_code + GET(code, 1);
int recno = (callpat == md->start_code)? 0 :
GET2(callpat, 1 + LINK_SIZE);
int rc;
DPRINTF(("%.*sStarting regex recursion\n", rlevel*2-2, SP));
/* Check for repeating a recursion without advancing the subject
pointer. This should catch convoluted mutual recursions. (Some simple
cases are caught at compile time.) */
for (ri = md->recursive; ri != NULL; ri = ri->prevrec)
if (recno == ri->group_num && ptr == ri->subject_position)
return PCRE_ERROR_RECURSELOOP;
/* Remember this recursion and where we started it so as to
catch infinite loops. */
new_recursive.group_num = recno;
new_recursive.subject_position = ptr;
new_recursive.prevrec = md->recursive;
md->recursive = &new_recursive;
rc = internal_dfa_exec(
md, /* fixed match data */
callpat, /* this subexpression's code */
ptr, /* where we currently are */
(int)(ptr - start_subject), /* start offset */
local_offsets, /* offset vector */
sizeof(local_offsets)/sizeof(int), /* size of same */
local_workspace, /* workspace vector */
sizeof(local_workspace)/sizeof(int), /* size of same */
rlevel); /* function recursion level */
md->recursive = new_recursive.prevrec; /* Done this recursion */
DPRINTF(("%.*sReturn from regex recursion: rc=%d\n", rlevel*2-2, SP,
rc));
/* Ran out of internal offsets */
if (rc == 0) return PCRE_ERROR_DFA_RECURSE;
/* For each successful matched substring, set up the next state with a
count of characters to skip before trying it. Note that the count is in
characters, not bytes. */
if (rc > 0)
{
for (rc = rc*2 - 2; rc >= 0; rc -= 2)
{
int charcount = local_offsets[rc+1] - local_offsets[rc];
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf)
{
const pcre_uchar *p = start_subject + local_offsets[rc];
const pcre_uchar *pp = start_subject + local_offsets[rc+1];
while (p < pp) if (NOT_FIRSTCHAR(*p++)) charcount--;
}
#endif
if (charcount > 0)
{
ADD_NEW_DATA(-(state_offset + LINK_SIZE + 1), 0, (charcount - 1));
}
else
{
ADD_ACTIVE(state_offset + LINK_SIZE + 1, 0);
}
}
}
else if (rc != PCRE_ERROR_NOMATCH) return rc;
}
break;
/*-----------------------------------------------------------------*/
case OP_BRAPOS:
case OP_SBRAPOS:
case OP_CBRAPOS:
case OP_SCBRAPOS:
case OP_BRAPOSZERO:
{
int charcount, matched_count;
const pcre_uchar *local_ptr = ptr;
BOOL allow_zero;
if (codevalue == OP_BRAPOSZERO)
{
allow_zero = TRUE;
codevalue = *(++code); /* Codevalue will be one of above BRAs */
}
else allow_zero = FALSE;
/* Loop to match the subpattern as many times as possible as if it were
a complete pattern. */
for (matched_count = 0;; matched_count++)
{
int local_offsets[2];
int local_workspace[1000];
int rc = internal_dfa_exec(
md, /* fixed match data */
code, /* this subexpression's code */
local_ptr, /* where we currently are */
(int)(ptr - start_subject), /* start offset */
local_offsets, /* offset vector */
sizeof(local_offsets)/sizeof(int), /* size of same */
local_workspace, /* workspace vector */
sizeof(local_workspace)/sizeof(int), /* size of same */
rlevel); /* function recursion level */
/* Failed to match */
if (rc < 0)
{
if (rc != PCRE_ERROR_NOMATCH) return rc;
break;
}
/* Matched: break the loop if zero characters matched. */
charcount = local_offsets[1] - local_offsets[0];
if (charcount == 0) break;
local_ptr += charcount; /* Advance temporary position ptr */
}
/* At this point we have matched the subpattern matched_count
times, and local_ptr is pointing to the character after the end of the
last match. */
if (matched_count > 0 || allow_zero)
{
const pcre_uchar *end_subpattern = code;
int next_state_offset;
do { end_subpattern += GET(end_subpattern, 1); }
while (*end_subpattern == OP_ALT);
next_state_offset =
(int)(end_subpattern - start_code + LINK_SIZE + 1);
/* Optimization: if there are no more active states, and there
are no new states yet set up, then skip over the subject string
right here, to save looping. Otherwise, set up the new state to swing
into action when the end of the matched substring is reached. */
if (i + 1 >= active_count && new_count == 0)
{
ptr = local_ptr;
clen = 0;
ADD_NEW(next_state_offset, 0);
}
else
{
const pcre_uchar *p = ptr;
const pcre_uchar *pp = local_ptr;
charcount = (int)(pp - p);
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf) while (p < pp) if (NOT_FIRSTCHAR(*p++)) charcount--;
#endif
ADD_NEW_DATA(-next_state_offset, 0, (charcount - 1));
}
}
}
break;
/*-----------------------------------------------------------------*/
case OP_ONCE:
case OP_ONCE_NC:
{
int local_offsets[2];
int local_workspace[1000];
int rc = internal_dfa_exec(
md, /* fixed match data */
code, /* this subexpression's code */
ptr, /* where we currently are */
(int)(ptr - start_subject), /* start offset */
local_offsets, /* offset vector */
sizeof(local_offsets)/sizeof(int), /* size of same */
local_workspace, /* workspace vector */
sizeof(local_workspace)/sizeof(int), /* size of same */
rlevel); /* function recursion level */
if (rc >= 0)
{
const pcre_uchar *end_subpattern = code;
int charcount = local_offsets[1] - local_offsets[0];
int next_state_offset, repeat_state_offset;
do { end_subpattern += GET(end_subpattern, 1); }
while (*end_subpattern == OP_ALT);
next_state_offset =
(int)(end_subpattern - start_code + LINK_SIZE + 1);
/* If the end of this subpattern is KETRMAX or KETRMIN, we must
arrange for the repeat state also to be added to the relevant list.
Calculate the offset, or set -1 for no repeat. */
repeat_state_offset = (*end_subpattern == OP_KETRMAX ||
*end_subpattern == OP_KETRMIN)?
(int)(end_subpattern - start_code - GET(end_subpattern, 1)) : -1;
/* If we have matched an empty string, add the next state at the
current character pointer. This is important so that the duplicate
checking kicks in, which is what breaks infinite loops that match an
empty string. */
if (charcount == 0)
{
ADD_ACTIVE(next_state_offset, 0);
}
/* Optimization: if there are no more active states, and there
are no new states yet set up, then skip over the subject string
right here, to save looping. Otherwise, set up the new state to swing
into action when the end of the matched substring is reached. */
else if (i + 1 >= active_count && new_count == 0)
{
ptr += charcount;
clen = 0;
ADD_NEW(next_state_offset, 0);
/* If we are adding a repeat state at the new character position,
we must fudge things so that it is the only current state.
Otherwise, it might be a duplicate of one we processed before, and
that would cause it to be skipped. */
if (repeat_state_offset >= 0)
{
next_active_state = active_states;
active_count = 0;
i = -1;
ADD_ACTIVE(repeat_state_offset, 0);
}
}
else
{
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf)
{
const pcre_uchar *p = start_subject + local_offsets[0];
const pcre_uchar *pp = start_subject + local_offsets[1];
while (p < pp) if (NOT_FIRSTCHAR(*p++)) charcount--;
}
#endif
ADD_NEW_DATA(-next_state_offset, 0, (charcount - 1));
if (repeat_state_offset >= 0)
{ ADD_NEW_DATA(-repeat_state_offset, 0, (charcount - 1)); }
}
}
else if (rc != PCRE_ERROR_NOMATCH) return rc;
}
break;
/* ========================================================================== */
/* Handle callouts */
case OP_CALLOUT:
rrc = 0;
if (PUBL(callout) != NULL)
{
PUBL(callout_block) cb;
cb.version = 1; /* Version 1 of the callout block */
cb.callout_number = code[1];
cb.offset_vector = offsets;
#if defined COMPILE_PCRE8
cb.subject = (PCRE_SPTR)start_subject;
#elif defined COMPILE_PCRE16
cb.subject = (PCRE_SPTR16)start_subject;
#elif defined COMPILE_PCRE32
cb.subject = (PCRE_SPTR32)start_subject;
#endif
cb.subject_length = (int)(end_subject - start_subject);
cb.start_match = (int)(current_subject - start_subject);
cb.current_position = (int)(ptr - start_subject);
cb.pattern_position = GET(code, 2);
cb.next_item_length = GET(code, 2 + LINK_SIZE);
cb.capture_top = 1;
cb.capture_last = -1;
cb.callout_data = md->callout_data;
cb.mark = NULL; /* No (*MARK) support */
if ((rrc = (*PUBL(callout))(&cb)) < 0) return rrc; /* Abandon */
}
if (rrc == 0)
{ ADD_ACTIVE(state_offset + PRIV(OP_lengths)[OP_CALLOUT], 0); }
break;
/* ========================================================================== */
default: /* Unsupported opcode */
return PCRE_ERROR_DFA_UITEM;
}
NEXT_ACTIVE_STATE: continue;
} /* End of loop scanning active states */
/* We have finished the processing at the current subject character. If no
new states have been set for the next character, we have found all the
matches that we are going to find. If we are at the top level and partial
matching has been requested, check for appropriate conditions.
The "forced_ fail" variable counts the number of (*F) encountered for the
character. If it is equal to the original active_count (saved in
workspace[1]) it means that (*F) was found on every active state. In this
case we don't want to give a partial match.
The "could_continue" variable is true if a state could have continued but
for the fact that the end of the subject was reached. */
if (new_count <= 0)
{
if (rlevel == 1 && /* Top level, and */
could_continue && /* Some could go on, and */
forced_fail != workspace[1] && /* Not all forced fail & */
( /* either... */
(md->moptions & PCRE_PARTIAL_HARD) != 0 /* Hard partial */
|| /* or... */
((md->moptions & PCRE_PARTIAL_SOFT) != 0 && /* Soft partial and */
match_count < 0) /* no matches */
) && /* And... */
(
partial_newline || /* Either partial NL */
( /* or ... */
ptr >= end_subject && /* End of subject and */
ptr > md->start_used_ptr) /* Inspected non-empty string */
)
)
match_count = PCRE_ERROR_PARTIAL;
DPRINTF(("%.*sEnd of internal_dfa_exec %d: returning %d\n"
"%.*s---------------------\n\n", rlevel*2-2, SP, rlevel, match_count,
rlevel*2-2, SP));
break; /* In effect, "return", but see the comment below */
}
/* One or more states are active for the next character. */
ptr += clen; /* Advance to next subject character */
} /* Loop to move along the subject string */
/* Control gets here from "break" a few lines above. We do it this way because
if we use "return" above, we have compiler trouble. Some compilers warn if
there's nothing here because they think the function doesn't return a value. On
the other hand, if we put a dummy statement here, some more clever compilers
complain that it can't be reached. Sigh. */
return match_count;
}
/*************************************************
* Execute a Regular Expression - DFA engine *
*************************************************/
/* This external function applies a compiled re to a subject string using a DFA
engine. This function calls the internal function multiple times if the pattern
is not anchored.
Arguments:
argument_re points to the compiled expression
extra_data points to extra data or is NULL
subject points to the subject string
length length of subject string (may contain binary zeros)
start_offset where to start in the subject string
options option bits
offsets vector of match offsets
offsetcount size of same
workspace workspace vector
wscount size of same
Returns: > 0 => number of match offset pairs placed in offsets
= 0 => offsets overflowed; longest matches are present
-1 => failed to match
< -1 => some kind of unexpected problem
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_dfa_exec(const pcre *argument_re, const pcre_extra *extra_data,
const char *subject, int length, int start_offset, int options, int *offsets,
int offsetcount, int *workspace, int wscount)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_dfa_exec(const pcre16 *argument_re, const pcre16_extra *extra_data,
PCRE_SPTR16 subject, int length, int start_offset, int options, int *offsets,
int offsetcount, int *workspace, int wscount)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_dfa_exec(const pcre32 *argument_re, const pcre32_extra *extra_data,
PCRE_SPTR32 subject, int length, int start_offset, int options, int *offsets,
int offsetcount, int *workspace, int wscount)
#endif
{
REAL_PCRE *re = (REAL_PCRE *)argument_re;
dfa_match_data match_block;
dfa_match_data *md = &match_block;
BOOL utf, anchored, startline, firstline;
const pcre_uchar *current_subject, *end_subject;
const pcre_study_data *study = NULL;
const pcre_uchar *req_char_ptr;
const pcre_uint8 *start_bits = NULL;
BOOL has_first_char = FALSE;
BOOL has_req_char = FALSE;
pcre_uchar first_char = 0;
pcre_uchar first_char2 = 0;
pcre_uchar req_char = 0;
pcre_uchar req_char2 = 0;
int newline;
/* Plausibility checks */
if ((options & ~PUBLIC_DFA_EXEC_OPTIONS) != 0) return PCRE_ERROR_BADOPTION;
if (re == NULL || subject == NULL || workspace == NULL ||
(offsets == NULL && offsetcount > 0)) return PCRE_ERROR_NULL;
if (offsetcount < 0) return PCRE_ERROR_BADCOUNT;
if (wscount < 20) return PCRE_ERROR_DFA_WSSIZE;
if (length < 0) return PCRE_ERROR_BADLENGTH;
if (start_offset < 0 || start_offset > length) return PCRE_ERROR_BADOFFSET;
/* Check that the first field in the block is the magic number. If it is not,
return with PCRE_ERROR_BADMAGIC. However, if the magic number is equal to
REVERSED_MAGIC_NUMBER we return with PCRE_ERROR_BADENDIANNESS, which
means that the pattern is likely compiled with different endianness. */
if (re->magic_number != MAGIC_NUMBER)
return re->magic_number == REVERSED_MAGIC_NUMBER?
PCRE_ERROR_BADENDIANNESS:PCRE_ERROR_BADMAGIC;
if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
/* If restarting after a partial match, do some sanity checks on the contents
of the workspace. */
if ((options & PCRE_DFA_RESTART) != 0)
{
if ((workspace[0] & (-2)) != 0 || workspace[1] < 1 ||
workspace[1] > (wscount - 2)/INTS_PER_STATEBLOCK)
return PCRE_ERROR_DFA_BADRESTART;
}
/* Set up study, callout, and table data */
md->tables = re->tables;
md->callout_data = NULL;
if (extra_data != NULL)
{
unsigned long int flags = extra_data->flags;
if ((flags & PCRE_EXTRA_STUDY_DATA) != 0)
study = (const pcre_study_data *)extra_data->study_data;
if ((flags & PCRE_EXTRA_MATCH_LIMIT) != 0) return PCRE_ERROR_DFA_UMLIMIT;
if ((flags & PCRE_EXTRA_MATCH_LIMIT_RECURSION) != 0)
return PCRE_ERROR_DFA_UMLIMIT;
if ((flags & PCRE_EXTRA_CALLOUT_DATA) != 0)
md->callout_data = extra_data->callout_data;
if ((flags & PCRE_EXTRA_TABLES) != 0)
md->tables = extra_data->tables;
}
/* Set some local values */
current_subject = (const pcre_uchar *)subject + start_offset;
end_subject = (const pcre_uchar *)subject + length;
req_char_ptr = current_subject - 1;
#ifdef SUPPORT_UTF
/* PCRE_UTF(16|32) have the same value as PCRE_UTF8. */
utf = (re->options & PCRE_UTF8) != 0;
#else
utf = FALSE;
#endif
anchored = (options & (PCRE_ANCHORED|PCRE_DFA_RESTART)) != 0 ||
(re->options & PCRE_ANCHORED) != 0;
/* The remaining fixed data for passing around. */
md->start_code = (const pcre_uchar *)argument_re +
re->name_table_offset + re->name_count * re->name_entry_size;
md->start_subject = (const pcre_uchar *)subject;
md->end_subject = end_subject;
md->start_offset = start_offset;
md->moptions = options;
md->poptions = re->options;
/* If the BSR option is not set at match time, copy what was set
at compile time. */
if ((md->moptions & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)) == 0)
{
if ((re->options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)) != 0)
md->moptions |= re->options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE);
#ifdef BSR_ANYCRLF
else md->moptions |= PCRE_BSR_ANYCRLF;
#endif
}
/* Handle different types of newline. The three bits give eight cases. If
nothing is set at run time, whatever was used at compile time applies. */
switch ((((options & PCRE_NEWLINE_BITS) == 0)? re->options : (pcre_uint32)options) &
PCRE_NEWLINE_BITS)
{
case 0: newline = NEWLINE; break; /* Compile-time default */
case PCRE_NEWLINE_CR: newline = CHAR_CR; break;
case PCRE_NEWLINE_LF: newline = CHAR_NL; break;
case PCRE_NEWLINE_CR+
PCRE_NEWLINE_LF: newline = (CHAR_CR << 8) | CHAR_NL; break;
case PCRE_NEWLINE_ANY: newline = -1; break;
case PCRE_NEWLINE_ANYCRLF: newline = -2; break;
default: return PCRE_ERROR_BADNEWLINE;
}
if (newline == -2)
{
md->nltype = NLTYPE_ANYCRLF;
}
else if (newline < 0)
{
md->nltype = NLTYPE_ANY;
}
else
{
md->nltype = NLTYPE_FIXED;
if (newline > 255)
{
md->nllen = 2;
md->nl[0] = (newline >> 8) & 255;
md->nl[1] = newline & 255;
}
else
{
md->nllen = 1;
md->nl[0] = newline;
}
}
/* Check a UTF-8 string if required. Unfortunately there's no way of passing
back the character offset. */
#ifdef SUPPORT_UTF
if (utf && (options & PCRE_NO_UTF8_CHECK) == 0)
{
int erroroffset;
int errorcode = PRIV(valid_utf)((pcre_uchar *)subject, length, &erroroffset);
if (errorcode != 0)
{
if (offsetcount >= 2)
{
offsets[0] = erroroffset;
offsets[1] = errorcode;
}
#if defined COMPILE_PCRE8
return (errorcode <= PCRE_UTF8_ERR5 && (options & PCRE_PARTIAL_HARD) != 0) ?
PCRE_ERROR_SHORTUTF8 : PCRE_ERROR_BADUTF8;
#elif defined COMPILE_PCRE16
return (errorcode <= PCRE_UTF16_ERR1 && (options & PCRE_PARTIAL_HARD) != 0) ?
PCRE_ERROR_SHORTUTF16 : PCRE_ERROR_BADUTF16;
#elif defined COMPILE_PCRE32
return PCRE_ERROR_BADUTF32;
#endif
}
#if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
if (start_offset > 0 && start_offset < length &&
NOT_FIRSTCHAR(((PCRE_PUCHAR)subject)[start_offset]))
return PCRE_ERROR_BADUTF8_OFFSET;
#endif
}
#endif
/* If the exec call supplied NULL for tables, use the inbuilt ones. This
is a feature that makes it possible to save compiled regex and re-use them
in other programs later. */
if (md->tables == NULL) md->tables = PRIV(default_tables);
/* The "must be at the start of a line" flags are used in a loop when finding
where to start. */
startline = (re->flags & PCRE_STARTLINE) != 0;
firstline = (re->options & PCRE_FIRSTLINE) != 0;
/* Set up the first character to match, if available. The first_byte value is
never set for an anchored regular expression, but the anchoring may be forced
at run time, so we have to test for anchoring. The first char may be unset for
an unanchored pattern, of course. If there's no first char and the pattern was
studied, there may be a bitmap of possible first characters. */
if (!anchored)
{
if ((re->flags & PCRE_FIRSTSET) != 0)
{
has_first_char = TRUE;
first_char = first_char2 = (pcre_uchar)(re->first_char);
if ((re->flags & PCRE_FCH_CASELESS) != 0)
{
first_char2 = TABLE_GET(first_char, md->tables + fcc_offset, first_char);
#if defined SUPPORT_UCP && !(defined COMPILE_PCRE8)
if (utf && first_char > 127)
first_char2 = UCD_OTHERCASE(first_char);
#endif
}
}
else
{
if (!startline && study != NULL &&
(study->flags & PCRE_STUDY_MAPPED) != 0)
start_bits = study->start_bits;
}
}
/* For anchored or unanchored matches, there may be a "last known required
character" set. */
if ((re->flags & PCRE_REQCHSET) != 0)
{
has_req_char = TRUE;
req_char = req_char2 = (pcre_uchar)(re->req_char);
if ((re->flags & PCRE_RCH_CASELESS) != 0)
{
req_char2 = TABLE_GET(req_char, md->tables + fcc_offset, req_char);
#if defined SUPPORT_UCP && !(defined COMPILE_PCRE8)
if (utf && req_char > 127)
req_char2 = UCD_OTHERCASE(req_char);
#endif
}
}
/* Call the main matching function, looping for a non-anchored regex after a
failed match. If not restarting, perform certain optimizations at the start of
a match. */
for (;;)
{
int rc;
if ((options & PCRE_DFA_RESTART) == 0)
{
const pcre_uchar *save_end_subject = end_subject;
/* If firstline is TRUE, the start of the match is constrained to the first
line of a multiline string. Implement this by temporarily adjusting
end_subject so that we stop scanning at a newline. If the match fails at
the newline, later code breaks this loop. */
if (firstline)
{
PCRE_PUCHAR t = current_subject;
#ifdef SUPPORT_UTF
if (utf)
{
while (t < md->end_subject && !IS_NEWLINE(t))
{
t++;
ACROSSCHAR(t < end_subject, *t, t++);
}
}
else
#endif
while (t < md->end_subject && !IS_NEWLINE(t)) t++;
end_subject = t;
}
/* There are some optimizations that avoid running the match if a known
starting point is not found. However, there is an option that disables
these, for testing and for ensuring that all callouts do actually occur.
The option can be set in the regex by (*NO_START_OPT) or passed in
match-time options. */
if (((options | re->options) & PCRE_NO_START_OPTIMIZE) == 0)
{
/* Advance to a known first pcre_uchar (i.e. data item) */
if (has_first_char)
{
if (first_char != first_char2)
{
pcre_uchar csc;
while (current_subject < end_subject &&
(csc = UCHAR21TEST(current_subject)) != first_char && csc != first_char2)
current_subject++;
}
else
while (current_subject < end_subject &&
UCHAR21TEST(current_subject) != first_char)
current_subject++;
}
/* Or to just after a linebreak for a multiline match if possible */
else if (startline)
{
if (current_subject > md->start_subject + start_offset)
{
#ifdef SUPPORT_UTF
if (utf)
{
while (current_subject < end_subject &&
!WAS_NEWLINE(current_subject))
{
current_subject++;
ACROSSCHAR(current_subject < end_subject, *current_subject,
current_subject++);
}
}
else
#endif
while (current_subject < end_subject && !WAS_NEWLINE(current_subject))
current_subject++;
/* If we have just passed a CR and the newline option is ANY or
ANYCRLF, and we are now at a LF, advance the match position by one
more character. */
if (UCHAR21TEST(current_subject - 1) == CHAR_CR &&
(md->nltype == NLTYPE_ANY || md->nltype == NLTYPE_ANYCRLF) &&
current_subject < end_subject &&
UCHAR21TEST(current_subject) == CHAR_NL)
current_subject++;
}
}
/* Advance to a non-unique first pcre_uchar after study */
else if (start_bits != NULL)
{
while (current_subject < end_subject)
{
register pcre_uint32 c = UCHAR21TEST(current_subject);
#ifndef COMPILE_PCRE8
if (c > 255) c = 255;
#endif
if ((start_bits[c/8] & (1 << (c&7))) != 0) break;
current_subject++;
}
}
}
/* Restore fudged end_subject */
end_subject = save_end_subject;
/* The following two optimizations are disabled for partial matching or if
disabling is explicitly requested (and of course, by the test above, this
code is not obeyed when restarting after a partial match). */
if (((options | re->options) & PCRE_NO_START_OPTIMIZE) == 0 &&
(options & (PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT)) == 0)
{
/* If the pattern was studied, a minimum subject length may be set. This
is a lower bound; no actual string of that length may actually match the
pattern. Although the value is, strictly, in characters, we treat it as
in pcre_uchar units to avoid spending too much time in this optimization.
*/
if (study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0 &&
(pcre_uint32)(end_subject - current_subject) < study->minlength)
return PCRE_ERROR_NOMATCH;
/* If req_char is set, we know that that pcre_uchar must appear in the
subject for the match to succeed. If the first pcre_uchar is set,
req_char must be later in the subject; otherwise the test starts at the
match point. This optimization can save a huge amount of work in patterns
with nested unlimited repeats that aren't going to match. Writing
separate code for cased/caseless versions makes it go faster, as does
using an autoincrement and backing off on a match.
HOWEVER: when the subject string is very, very long, searching to its end
can take a long time, and give bad performance on quite ordinary
patterns. This showed up when somebody was matching /^C/ on a 32-megabyte
string... so we don't do this when the string is sufficiently long. */
if (has_req_char && end_subject - current_subject < REQ_BYTE_MAX)
{
register PCRE_PUCHAR p = current_subject + (has_first_char? 1:0);
/* We don't need to repeat the search if we haven't yet reached the
place we found it at last time. */
if (p > req_char_ptr)
{
if (req_char != req_char2)
{
while (p < end_subject)
{
register pcre_uint32 pp = UCHAR21INCTEST(p);
if (pp == req_char || pp == req_char2) { p--; break; }
}
}
else
{
while (p < end_subject)
{
if (UCHAR21INCTEST(p) == req_char) { p--; break; }
}
}
/* If we can't find the required pcre_uchar, break the matching loop,
which will cause a return or PCRE_ERROR_NOMATCH. */
if (p >= end_subject) break;
/* If we have found the required pcre_uchar, save the point where we
found it, so that we don't search again next time round the loop if
the start hasn't passed this point yet. */
req_char_ptr = p;
}
}
}
} /* End of optimizations that are done when not restarting */
/* OK, now we can do the business */
md->start_used_ptr = current_subject;
md->recursive = NULL;
rc = internal_dfa_exec(
md, /* fixed match data */
md->start_code, /* this subexpression's code */
current_subject, /* where we currently are */
start_offset, /* start offset in subject */
offsets, /* offset vector */
offsetcount, /* size of same */
workspace, /* workspace vector */
wscount, /* size of same */
0); /* function recurse level */
/* Anything other than "no match" means we are done, always; otherwise, carry
on only if not anchored. */
if (rc != PCRE_ERROR_NOMATCH || anchored)
{
if (rc == PCRE_ERROR_PARTIAL && offsetcount >= 2)
{
offsets[0] = (int)(md->start_used_ptr - (PCRE_PUCHAR)subject);
offsets[1] = (int)(end_subject - (PCRE_PUCHAR)subject);
if (offsetcount > 2)
offsets[2] = (int)(current_subject - (PCRE_PUCHAR)subject);
}
return rc;
}
/* Advance to the next subject character unless we are at the end of a line
and firstline is set. */
if (firstline && IS_NEWLINE(current_subject)) break;
current_subject++;
#ifdef SUPPORT_UTF
if (utf)
{
ACROSSCHAR(current_subject < end_subject, *current_subject,
current_subject++);
}
#endif
if (current_subject > end_subject) break;
/* If we have just passed a CR and we are now at a LF, and the pattern does
not contain any explicit matches for \r or \n, and the newline option is CRLF
or ANY or ANYCRLF, advance the match position by one more character. */
if (UCHAR21TEST(current_subject - 1) == CHAR_CR &&
current_subject < end_subject &&
UCHAR21TEST(current_subject) == CHAR_NL &&
(re->flags & PCRE_HASCRORLF) == 0 &&
(md->nltype == NLTYPE_ANY ||
md->nltype == NLTYPE_ANYCRLF ||
md->nllen == 2))
current_subject++;
} /* "Bumpalong" loop */
return PCRE_ERROR_NOMATCH;
}
/* End of pcre_dfa_exec.c */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre.h
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* This is the public header file for the PCRE library, to be #included by
applications that call the PCRE functions.
Copyright (c) 1997-2014 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
#ifndef _PCRE_H
#define _PCRE_H
/* The current PCRE version information. */
#define PCRE_MAJOR 8
#define PCRE_MINOR 44
#define PCRE_PRERELEASE
#define PCRE_DATE 2020-02-12
#define PCRE_EXP_DECL extern
/* Have to include stdlib.h in order to ensure that size_t is defined;
it is needed here for malloc. */
#include <stdlib.h>
/* Allow for C++ users */
#ifdef __cplusplus
extern "C" {
#endif
/* Public options. Some are compile-time only, some are run-time only, and some
are both. Most of the compile-time options are saved with the compiled regex so
that they can be inspected during studying (and therefore JIT compiling). Note
that pcre_study() has its own set of options. Originally, all the options
defined here used distinct bits. However, almost all the bits in a 32-bit word
are now used, so in order to conserve them, option bits that were previously
only recognized at matching time (i.e. by pcre_exec() or pcre_dfa_exec()) may
also be used for compile-time options that affect only compiling and are not
relevant for studying or JIT compiling.
Some options for pcre_compile() change its behaviour but do not affect the
behaviour of the execution functions. Other options are passed through to the
execution functions and affect their behaviour, with or without affecting the
behaviour of pcre_compile().
Options that can be passed to pcre_compile() are tagged Cx below, with these
variants:
C1 Affects compile only
C2 Does not affect compile; affects exec, dfa_exec
C3 Affects compile, exec, dfa_exec
C4 Affects compile, exec, dfa_exec, study
C5 Affects compile, exec, study
Options that can be set for pcre_exec() and/or pcre_dfa_exec() are flagged with
E and D, respectively. They take precedence over C3, C4, and C5 settings passed
from pcre_compile(). Those that are compatible with JIT execution are flagged
with J. */
#define PCRE_CASELESS 0x00000001 /* C1 */
#define PCRE_MULTILINE 0x00000002 /* C1 */
#define PCRE_DOTALL 0x00000004 /* C1 */
#define PCRE_EXTENDED 0x00000008 /* C1 */
#define PCRE_ANCHORED 0x00000010 /* C4 E D */
#define PCRE_DOLLAR_ENDONLY 0x00000020 /* C2 */
#define PCRE_EXTRA 0x00000040 /* C1 */
#define PCRE_NOTBOL 0x00000080 /* E D J */
#define PCRE_NOTEOL 0x00000100 /* E D J */
#define PCRE_UNGREEDY 0x00000200 /* C1 */
#define PCRE_NOTEMPTY 0x00000400 /* E D J */
#define PCRE_UTF8 0x00000800 /* C4 ) */
#define PCRE_UTF16 0x00000800 /* C4 ) Synonyms */
#define PCRE_UTF32 0x00000800 /* C4 ) */
#define PCRE_NO_AUTO_CAPTURE 0x00001000 /* C1 */
#define PCRE_NO_UTF8_CHECK 0x00002000 /* C1 E D J ) */
#define PCRE_NO_UTF16_CHECK 0x00002000 /* C1 E D J ) Synonyms */
#define PCRE_NO_UTF32_CHECK 0x00002000 /* C1 E D J ) */
#define PCRE_AUTO_CALLOUT 0x00004000 /* C1 */
#define PCRE_PARTIAL_SOFT 0x00008000 /* E D J ) Synonyms */
#define PCRE_PARTIAL 0x00008000 /* E D J ) */
/* This pair use the same bit. */
#define PCRE_NEVER_UTF 0x00010000 /* C1 ) Overlaid */
#define PCRE_DFA_SHORTEST 0x00010000 /* D ) Overlaid */
/* This pair use the same bit. */
#define PCRE_NO_AUTO_POSSESS 0x00020000 /* C1 ) Overlaid */
#define PCRE_DFA_RESTART 0x00020000 /* D ) Overlaid */
#define PCRE_FIRSTLINE 0x00040000 /* C3 */
#define PCRE_DUPNAMES 0x00080000 /* C1 */
#define PCRE_NEWLINE_CR 0x00100000 /* C3 E D */
#define PCRE_NEWLINE_LF 0x00200000 /* C3 E D */
#define PCRE_NEWLINE_CRLF 0x00300000 /* C3 E D */
#define PCRE_NEWLINE_ANY 0x00400000 /* C3 E D */
#define PCRE_NEWLINE_ANYCRLF 0x00500000 /* C3 E D */
#define PCRE_BSR_ANYCRLF 0x00800000 /* C3 E D */
#define PCRE_BSR_UNICODE 0x01000000 /* C3 E D */
#define PCRE_JAVASCRIPT_COMPAT 0x02000000 /* C5 */
#define PCRE_NO_START_OPTIMIZE 0x04000000 /* C2 E D ) Synonyms */
#define PCRE_NO_START_OPTIMISE 0x04000000 /* C2 E D ) */
#define PCRE_PARTIAL_HARD 0x08000000 /* E D J */
#define PCRE_NOTEMPTY_ATSTART 0x10000000 /* E D J */
#define PCRE_UCP 0x20000000 /* C3 */
/* Exec-time and get/set-time error codes */
#define PCRE_ERROR_NOMATCH (-1)
#define PCRE_ERROR_NULL (-2)
#define PCRE_ERROR_BADOPTION (-3)
#define PCRE_ERROR_BADMAGIC (-4)
#define PCRE_ERROR_UNKNOWN_OPCODE (-5)
#define PCRE_ERROR_UNKNOWN_NODE (-5) /* For backward compatibility */
#define PCRE_ERROR_NOMEMORY (-6)
#define PCRE_ERROR_NOSUBSTRING (-7)
#define PCRE_ERROR_MATCHLIMIT (-8)
#define PCRE_ERROR_CALLOUT (-9) /* Never used by PCRE itself */
#define PCRE_ERROR_BADUTF8 (-10) /* Same for 8/16/32 */
#define PCRE_ERROR_BADUTF16 (-10) /* Same for 8/16/32 */
#define PCRE_ERROR_BADUTF32 (-10) /* Same for 8/16/32 */
#define PCRE_ERROR_BADUTF8_OFFSET (-11) /* Same for 8/16 */
#define PCRE_ERROR_BADUTF16_OFFSET (-11) /* Same for 8/16 */
#define PCRE_ERROR_PARTIAL (-12)
#define PCRE_ERROR_BADPARTIAL (-13)
#define PCRE_ERROR_INTERNAL (-14)
#define PCRE_ERROR_BADCOUNT (-15)
#define PCRE_ERROR_DFA_UITEM (-16)
#define PCRE_ERROR_DFA_UCOND (-17)
#define PCRE_ERROR_DFA_UMLIMIT (-18)
#define PCRE_ERROR_DFA_WSSIZE (-19)
#define PCRE_ERROR_DFA_RECURSE (-20)
#define PCRE_ERROR_RECURSIONLIMIT (-21)
#define PCRE_ERROR_NULLWSLIMIT (-22) /* No longer actually used */
#define PCRE_ERROR_BADNEWLINE (-23)
#define PCRE_ERROR_BADOFFSET (-24)
#define PCRE_ERROR_SHORTUTF8 (-25)
#define PCRE_ERROR_SHORTUTF16 (-25) /* Same for 8/16 */
#define PCRE_ERROR_RECURSELOOP (-26)
#define PCRE_ERROR_JIT_STACKLIMIT (-27)
#define PCRE_ERROR_BADMODE (-28)
#define PCRE_ERROR_BADENDIANNESS (-29)
#define PCRE_ERROR_DFA_BADRESTART (-30)
#define PCRE_ERROR_JIT_BADOPTION (-31)
#define PCRE_ERROR_BADLENGTH (-32)
#define PCRE_ERROR_UNSET (-33)
/* Specific error codes for UTF-8 validity checks */
#define PCRE_UTF8_ERR0 0
#define PCRE_UTF8_ERR1 1
#define PCRE_UTF8_ERR2 2
#define PCRE_UTF8_ERR3 3
#define PCRE_UTF8_ERR4 4
#define PCRE_UTF8_ERR5 5
#define PCRE_UTF8_ERR6 6
#define PCRE_UTF8_ERR7 7
#define PCRE_UTF8_ERR8 8
#define PCRE_UTF8_ERR9 9
#define PCRE_UTF8_ERR10 10
#define PCRE_UTF8_ERR11 11
#define PCRE_UTF8_ERR12 12
#define PCRE_UTF8_ERR13 13
#define PCRE_UTF8_ERR14 14
#define PCRE_UTF8_ERR15 15
#define PCRE_UTF8_ERR16 16
#define PCRE_UTF8_ERR17 17
#define PCRE_UTF8_ERR18 18
#define PCRE_UTF8_ERR19 19
#define PCRE_UTF8_ERR20 20
#define PCRE_UTF8_ERR21 21
#define PCRE_UTF8_ERR22 22 /* Unused (was non-character) */
/* Specific error codes for UTF-16 validity checks */
#define PCRE_UTF16_ERR0 0
#define PCRE_UTF16_ERR1 1
#define PCRE_UTF16_ERR2 2
#define PCRE_UTF16_ERR3 3
#define PCRE_UTF16_ERR4 4 /* Unused (was non-character) */
/* Specific error codes for UTF-32 validity checks */
#define PCRE_UTF32_ERR0 0
#define PCRE_UTF32_ERR1 1
#define PCRE_UTF32_ERR2 2 /* Unused (was non-character) */
#define PCRE_UTF32_ERR3 3
/* Request types for pcre_fullinfo() */
#define PCRE_INFO_OPTIONS 0
#define PCRE_INFO_SIZE 1
#define PCRE_INFO_CAPTURECOUNT 2
#define PCRE_INFO_BACKREFMAX 3
#define PCRE_INFO_FIRSTBYTE 4
#define PCRE_INFO_FIRSTCHAR 4 /* For backwards compatibility */
#define PCRE_INFO_FIRSTTABLE 5
#define PCRE_INFO_LASTLITERAL 6
#define PCRE_INFO_NAMEENTRYSIZE 7
#define PCRE_INFO_NAMECOUNT 8
#define PCRE_INFO_NAMETABLE 9
#define PCRE_INFO_STUDYSIZE 10
#define PCRE_INFO_DEFAULT_TABLES 11
#define PCRE_INFO_OKPARTIAL 12
#define PCRE_INFO_JCHANGED 13
#define PCRE_INFO_HASCRORLF 14
#define PCRE_INFO_MINLENGTH 15
#define PCRE_INFO_JIT 16
#define PCRE_INFO_JITSIZE 17
#define PCRE_INFO_MAXLOOKBEHIND 18
#define PCRE_INFO_FIRSTCHARACTER 19
#define PCRE_INFO_FIRSTCHARACTERFLAGS 20
#define PCRE_INFO_REQUIREDCHAR 21
#define PCRE_INFO_REQUIREDCHARFLAGS 22
#define PCRE_INFO_MATCHLIMIT 23
#define PCRE_INFO_RECURSIONLIMIT 24
#define PCRE_INFO_MATCH_EMPTY 25
/* Request types for pcre_config(). Do not re-arrange, in order to remain
compatible. */
#define PCRE_CONFIG_UTF8 0
#define PCRE_CONFIG_NEWLINE 1
#define PCRE_CONFIG_LINK_SIZE 2
#define PCRE_CONFIG_POSIX_MALLOC_THRESHOLD 3
#define PCRE_CONFIG_MATCH_LIMIT 4
#define PCRE_CONFIG_STACKRECURSE 5
#define PCRE_CONFIG_UNICODE_PROPERTIES 6
#define PCRE_CONFIG_MATCH_LIMIT_RECURSION 7
#define PCRE_CONFIG_BSR 8
#define PCRE_CONFIG_JIT 9
#define PCRE_CONFIG_UTF16 10
#define PCRE_CONFIG_JITTARGET 11
#define PCRE_CONFIG_UTF32 12
#define PCRE_CONFIG_PARENS_LIMIT 13
/* Request types for pcre_study(). Do not re-arrange, in order to remain
compatible. */
#define PCRE_STUDY_JIT_COMPILE 0x0001
#define PCRE_STUDY_JIT_PARTIAL_SOFT_COMPILE 0x0002
#define PCRE_STUDY_JIT_PARTIAL_HARD_COMPILE 0x0004
#define PCRE_STUDY_EXTRA_NEEDED 0x0008
/* Bit flags for the pcre[16|32]_extra structure. Do not re-arrange or redefine
these bits, just add new ones on the end, in order to remain compatible. */
#define PCRE_EXTRA_STUDY_DATA 0x0001
#define PCRE_EXTRA_MATCH_LIMIT 0x0002
#define PCRE_EXTRA_CALLOUT_DATA 0x0004
#define PCRE_EXTRA_TABLES 0x0008
#define PCRE_EXTRA_MATCH_LIMIT_RECURSION 0x0010
#define PCRE_EXTRA_MARK 0x0020
#define PCRE_EXTRA_EXECUTABLE_JIT 0x0040
/* Types */
struct real_pcre8_or_16; /* declaration; the definition is private */
typedef struct real_pcre8_or_16 pcre;
struct real_pcre8_or_16; /* declaration; the definition is private */
typedef struct real_pcre8_or_16 pcre16;
struct real_pcre32; /* declaration; the definition is private */
typedef struct real_pcre32 pcre32;
struct real_pcre_jit_stack; /* declaration; the definition is private */
typedef struct real_pcre_jit_stack pcre_jit_stack;
struct real_pcre16_jit_stack; /* declaration; the definition is private */
typedef struct real_pcre16_jit_stack pcre16_jit_stack;
struct real_pcre32_jit_stack; /* declaration; the definition is private */
typedef struct real_pcre32_jit_stack pcre32_jit_stack;
/* If PCRE is compiled with 16 bit character support, PCRE_UCHAR16 must contain
a 16 bit wide signed data type. Otherwise it can be a dummy data type since
pcre16 functions are not implemented. There is a check for this in pcre_internal.h. */
#ifndef PCRE_UCHAR16
#define PCRE_UCHAR16 unsigned short
#endif
#ifndef PCRE_SPTR16
#define PCRE_SPTR16 const PCRE_UCHAR16 *
#endif
/* If PCRE is compiled with 32 bit character support, PCRE_UCHAR32 must contain
a 32 bit wide signed data type. Otherwise it can be a dummy data type since
pcre32 functions are not implemented. There is a check for this in pcre_internal.h. */
#ifndef PCRE_UCHAR32
#define PCRE_UCHAR32 unsigned int
#endif
#ifndef PCRE_SPTR32
#define PCRE_SPTR32 const PCRE_UCHAR32 *
#endif
/* When PCRE is compiled as a C++ library, the subject pointer type can be
replaced with a custom type. For conventional use, the public interface is a
const char *. */
#ifndef PCRE_SPTR
#define PCRE_SPTR const char *
#endif
/* The structure for passing additional data to pcre_exec(). This is defined in
such as way as to be extensible. Always add new fields at the end, in order to
remain compatible. */
typedef struct pcre_extra {
unsigned long int flags; /* Bits for which fields are set */
void *study_data; /* Opaque data from pcre_study() */
unsigned long int match_limit; /* Maximum number of calls to match() */
void *callout_data; /* Data passed back in callouts */
const unsigned char *tables; /* Pointer to character tables */
unsigned long int match_limit_recursion; /* Max recursive calls to match() */
unsigned char **mark; /* For passing back a mark pointer */
void *executable_jit; /* Contains a pointer to a compiled jit code */
} pcre_extra;
/* Same structure as above, but with 16 bit char pointers. */
typedef struct pcre16_extra {
unsigned long int flags; /* Bits for which fields are set */
void *study_data; /* Opaque data from pcre_study() */
unsigned long int match_limit; /* Maximum number of calls to match() */
void *callout_data; /* Data passed back in callouts */
const unsigned char *tables; /* Pointer to character tables */
unsigned long int match_limit_recursion; /* Max recursive calls to match() */
PCRE_UCHAR16 **mark; /* For passing back a mark pointer */
void *executable_jit; /* Contains a pointer to a compiled jit code */
} pcre16_extra;
/* Same structure as above, but with 32 bit char pointers. */
typedef struct pcre32_extra {
unsigned long int flags; /* Bits for which fields are set */
void *study_data; /* Opaque data from pcre_study() */
unsigned long int match_limit; /* Maximum number of calls to match() */
void *callout_data; /* Data passed back in callouts */
const unsigned char *tables; /* Pointer to character tables */
unsigned long int match_limit_recursion; /* Max recursive calls to match() */
PCRE_UCHAR32 **mark; /* For passing back a mark pointer */
void *executable_jit; /* Contains a pointer to a compiled jit code */
} pcre32_extra;
/* The structure for passing out data via the pcre_callout_function. We use a
structure so that new fields can be added on the end in future versions,
without changing the API of the function, thereby allowing old clients to work
without modification. */
typedef struct pcre_callout_block {
int version; /* Identifies version of block */
/* ------------------------ Version 0 ------------------------------- */
int callout_number; /* Number compiled into pattern */
int *offset_vector; /* The offset vector */
PCRE_SPTR subject; /* The subject being matched */
int subject_length; /* The length of the subject */
int start_match; /* Offset to start of this match attempt */
int current_position; /* Where we currently are in the subject */
int capture_top; /* Max current capture */
int capture_last; /* Most recently closed capture */
void *callout_data; /* Data passed in with the call */
/* ------------------- Added for Version 1 -------------------------- */
int pattern_position; /* Offset to next item in the pattern */
int next_item_length; /* Length of next item in the pattern */
/* ------------------- Added for Version 2 -------------------------- */
const unsigned char *mark; /* Pointer to current mark or NULL */
/* ------------------------------------------------------------------ */
} pcre_callout_block;
/* Same structure as above, but with 16 bit char pointers. */
typedef struct pcre16_callout_block {
int version; /* Identifies version of block */
/* ------------------------ Version 0 ------------------------------- */
int callout_number; /* Number compiled into pattern */
int *offset_vector; /* The offset vector */
PCRE_SPTR16 subject; /* The subject being matched */
int subject_length; /* The length of the subject */
int start_match; /* Offset to start of this match attempt */
int current_position; /* Where we currently are in the subject */
int capture_top; /* Max current capture */
int capture_last; /* Most recently closed capture */
void *callout_data; /* Data passed in with the call */
/* ------------------- Added for Version 1 -------------------------- */
int pattern_position; /* Offset to next item in the pattern */
int next_item_length; /* Length of next item in the pattern */
/* ------------------- Added for Version 2 -------------------------- */
const PCRE_UCHAR16 *mark; /* Pointer to current mark or NULL */
/* ------------------------------------------------------------------ */
} pcre16_callout_block;
/* Same structure as above, but with 32 bit char pointers. */
typedef struct pcre32_callout_block {
int version; /* Identifies version of block */
/* ------------------------ Version 0 ------------------------------- */
int callout_number; /* Number compiled into pattern */
int *offset_vector; /* The offset vector */
PCRE_SPTR32 subject; /* The subject being matched */
int subject_length; /* The length of the subject */
int start_match; /* Offset to start of this match attempt */
int current_position; /* Where we currently are in the subject */
int capture_top; /* Max current capture */
int capture_last; /* Most recently closed capture */
void *callout_data; /* Data passed in with the call */
/* ------------------- Added for Version 1 -------------------------- */
int pattern_position; /* Offset to next item in the pattern */
int next_item_length; /* Length of next item in the pattern */
/* ------------------- Added for Version 2 -------------------------- */
const PCRE_UCHAR32 *mark; /* Pointer to current mark or NULL */
/* ------------------------------------------------------------------ */
} pcre32_callout_block;
/* Indirection for store get and free functions. These can be set to
alternative malloc/free functions if required. Special ones are used in the
non-recursive case for "frames". There is also an optional callout function
that is triggered by the (?) regex item. For Virtual Pascal, these definitions
have to take another form. */
#ifndef VPCOMPAT
PCRE_EXP_DECL void *(*pcre_malloc)(size_t);
PCRE_EXP_DECL void (*pcre_free)(void *);
PCRE_EXP_DECL void *(*pcre_stack_malloc)(size_t);
PCRE_EXP_DECL void (*pcre_stack_free)(void *);
PCRE_EXP_DECL int (*pcre_callout)(pcre_callout_block *);
PCRE_EXP_DECL int (*pcre_stack_guard)(void);
PCRE_EXP_DECL void *(*pcre16_malloc)(size_t);
PCRE_EXP_DECL void (*pcre16_free)(void *);
PCRE_EXP_DECL void *(*pcre16_stack_malloc)(size_t);
PCRE_EXP_DECL void (*pcre16_stack_free)(void *);
PCRE_EXP_DECL int (*pcre16_callout)(pcre16_callout_block *);
PCRE_EXP_DECL int (*pcre16_stack_guard)(void);
PCRE_EXP_DECL void *(*pcre32_malloc)(size_t);
PCRE_EXP_DECL void (*pcre32_free)(void *);
PCRE_EXP_DECL void *(*pcre32_stack_malloc)(size_t);
PCRE_EXP_DECL void (*pcre32_stack_free)(void *);
PCRE_EXP_DECL int (*pcre32_callout)(pcre32_callout_block *);
PCRE_EXP_DECL int (*pcre32_stack_guard)(void);
#else /* VPCOMPAT */
PCRE_EXP_DECL void *pcre_malloc(size_t);
PCRE_EXP_DECL void pcre_free(void *);
PCRE_EXP_DECL void *pcre_stack_malloc(size_t);
PCRE_EXP_DECL void pcre_stack_free(void *);
PCRE_EXP_DECL int pcre_callout(pcre_callout_block *);
PCRE_EXP_DECL int pcre_stack_guard(void);
PCRE_EXP_DECL void *pcre16_malloc(size_t);
PCRE_EXP_DECL void pcre16_free(void *);
PCRE_EXP_DECL void *pcre16_stack_malloc(size_t);
PCRE_EXP_DECL void pcre16_stack_free(void *);
PCRE_EXP_DECL int pcre16_callout(pcre16_callout_block *);
PCRE_EXP_DECL int pcre16_stack_guard(void);
PCRE_EXP_DECL void *pcre32_malloc(size_t);
PCRE_EXP_DECL void pcre32_free(void *);
PCRE_EXP_DECL void *pcre32_stack_malloc(size_t);
PCRE_EXP_DECL void pcre32_stack_free(void *);
PCRE_EXP_DECL int pcre32_callout(pcre32_callout_block *);
PCRE_EXP_DECL int pcre32_stack_guard(void);
#endif /* VPCOMPAT */
/* User defined callback which provides a stack just before the match starts. */
typedef pcre_jit_stack *(*pcre_jit_callback)(void *);
typedef pcre16_jit_stack *(*pcre16_jit_callback)(void *);
typedef pcre32_jit_stack *(*pcre32_jit_callback)(void *);
/* Exported PCRE functions */
PCRE_EXP_DECL pcre *pcre_compile(const char *, int, const char **, int *,
const unsigned char *);
PCRE_EXP_DECL pcre16 *pcre16_compile(PCRE_SPTR16, int, const char **, int *,
const unsigned char *);
PCRE_EXP_DECL pcre32 *pcre32_compile(PCRE_SPTR32, int, const char **, int *,
const unsigned char *);
PCRE_EXP_DECL pcre *pcre_compile2(const char *, int, int *, const char **,
int *, const unsigned char *);
PCRE_EXP_DECL pcre16 *pcre16_compile2(PCRE_SPTR16, int, int *, const char **,
int *, const unsigned char *);
PCRE_EXP_DECL pcre32 *pcre32_compile2(PCRE_SPTR32, int, int *, const char **,
int *, const unsigned char *);
PCRE_EXP_DECL int pcre_config(int, void *);
PCRE_EXP_DECL int pcre16_config(int, void *);
PCRE_EXP_DECL int pcre32_config(int, void *);
PCRE_EXP_DECL int pcre_copy_named_substring(const pcre *, const char *,
int *, int, const char *, char *, int);
PCRE_EXP_DECL int pcre16_copy_named_substring(const pcre16 *, PCRE_SPTR16,
int *, int, PCRE_SPTR16, PCRE_UCHAR16 *, int);
PCRE_EXP_DECL int pcre32_copy_named_substring(const pcre32 *, PCRE_SPTR32,
int *, int, PCRE_SPTR32, PCRE_UCHAR32 *, int);
PCRE_EXP_DECL int pcre_copy_substring(const char *, int *, int, int,
char *, int);
PCRE_EXP_DECL int pcre16_copy_substring(PCRE_SPTR16, int *, int, int,
PCRE_UCHAR16 *, int);
PCRE_EXP_DECL int pcre32_copy_substring(PCRE_SPTR32, int *, int, int,
PCRE_UCHAR32 *, int);
PCRE_EXP_DECL int pcre_dfa_exec(const pcre *, const pcre_extra *,
const char *, int, int, int, int *, int , int *, int);
PCRE_EXP_DECL int pcre16_dfa_exec(const pcre16 *, const pcre16_extra *,
PCRE_SPTR16, int, int, int, int *, int , int *, int);
PCRE_EXP_DECL int pcre32_dfa_exec(const pcre32 *, const pcre32_extra *,
PCRE_SPTR32, int, int, int, int *, int , int *, int);
PCRE_EXP_DECL int pcre_exec(const pcre *, const pcre_extra *, PCRE_SPTR,
int, int, int, int *, int);
PCRE_EXP_DECL int pcre16_exec(const pcre16 *, const pcre16_extra *,
PCRE_SPTR16, int, int, int, int *, int);
PCRE_EXP_DECL int pcre32_exec(const pcre32 *, const pcre32_extra *,
PCRE_SPTR32, int, int, int, int *, int);
PCRE_EXP_DECL int pcre_jit_exec(const pcre *, const pcre_extra *,
PCRE_SPTR, int, int, int, int *, int,
pcre_jit_stack *);
PCRE_EXP_DECL int pcre16_jit_exec(const pcre16 *, const pcre16_extra *,
PCRE_SPTR16, int, int, int, int *, int,
pcre16_jit_stack *);
PCRE_EXP_DECL int pcre32_jit_exec(const pcre32 *, const pcre32_extra *,
PCRE_SPTR32, int, int, int, int *, int,
pcre32_jit_stack *);
PCRE_EXP_DECL void pcre_free_substring(const char *);
PCRE_EXP_DECL void pcre16_free_substring(PCRE_SPTR16);
PCRE_EXP_DECL void pcre32_free_substring(PCRE_SPTR32);
PCRE_EXP_DECL void pcre_free_substring_list(const char **);
PCRE_EXP_DECL void pcre16_free_substring_list(PCRE_SPTR16 *);
PCRE_EXP_DECL void pcre32_free_substring_list(PCRE_SPTR32 *);
PCRE_EXP_DECL int pcre_fullinfo(const pcre *, const pcre_extra *, int,
void *);
PCRE_EXP_DECL int pcre16_fullinfo(const pcre16 *, const pcre16_extra *, int,
void *);
PCRE_EXP_DECL int pcre32_fullinfo(const pcre32 *, const pcre32_extra *, int,
void *);
PCRE_EXP_DECL int pcre_get_named_substring(const pcre *, const char *,
int *, int, const char *, const char **);
PCRE_EXP_DECL int pcre16_get_named_substring(const pcre16 *, PCRE_SPTR16,
int *, int, PCRE_SPTR16, PCRE_SPTR16 *);
PCRE_EXP_DECL int pcre32_get_named_substring(const pcre32 *, PCRE_SPTR32,
int *, int, PCRE_SPTR32, PCRE_SPTR32 *);
PCRE_EXP_DECL int pcre_get_stringnumber(const pcre *, const char *);
PCRE_EXP_DECL int pcre16_get_stringnumber(const pcre16 *, PCRE_SPTR16);
PCRE_EXP_DECL int pcre32_get_stringnumber(const pcre32 *, PCRE_SPTR32);
PCRE_EXP_DECL int pcre_get_stringtable_entries(const pcre *, const char *,
char **, char **);
PCRE_EXP_DECL int pcre16_get_stringtable_entries(const pcre16 *, PCRE_SPTR16,
PCRE_UCHAR16 **, PCRE_UCHAR16 **);
PCRE_EXP_DECL int pcre32_get_stringtable_entries(const pcre32 *, PCRE_SPTR32,
PCRE_UCHAR32 **, PCRE_UCHAR32 **);
PCRE_EXP_DECL int pcre_get_substring(const char *, int *, int, int,
const char **);
PCRE_EXP_DECL int pcre16_get_substring(PCRE_SPTR16, int *, int, int,
PCRE_SPTR16 *);
PCRE_EXP_DECL int pcre32_get_substring(PCRE_SPTR32, int *, int, int,
PCRE_SPTR32 *);
PCRE_EXP_DECL int pcre_get_substring_list(const char *, int *, int,
const char ***);
PCRE_EXP_DECL int pcre16_get_substring_list(PCRE_SPTR16, int *, int,
PCRE_SPTR16 **);
PCRE_EXP_DECL int pcre32_get_substring_list(PCRE_SPTR32, int *, int,
PCRE_SPTR32 **);
PCRE_EXP_DECL const unsigned char *pcre_maketables(void);
PCRE_EXP_DECL const unsigned char *pcre16_maketables(void);
PCRE_EXP_DECL const unsigned char *pcre32_maketables(void);
PCRE_EXP_DECL int pcre_refcount(pcre *, int);
PCRE_EXP_DECL int pcre16_refcount(pcre16 *, int);
PCRE_EXP_DECL int pcre32_refcount(pcre32 *, int);
PCRE_EXP_DECL pcre_extra *pcre_study(const pcre *, int, const char **);
PCRE_EXP_DECL pcre16_extra *pcre16_study(const pcre16 *, int, const char **);
PCRE_EXP_DECL pcre32_extra *pcre32_study(const pcre32 *, int, const char **);
PCRE_EXP_DECL void pcre_free_study(pcre_extra *);
PCRE_EXP_DECL void pcre16_free_study(pcre16_extra *);
PCRE_EXP_DECL void pcre32_free_study(pcre32_extra *);
PCRE_EXP_DECL const char *pcre_version(void);
PCRE_EXP_DECL const char *pcre16_version(void);
PCRE_EXP_DECL const char *pcre32_version(void);
/* Utility functions for byte order swaps. */
PCRE_EXP_DECL int pcre_pattern_to_host_byte_order(pcre *, pcre_extra *,
const unsigned char *);
PCRE_EXP_DECL int pcre16_pattern_to_host_byte_order(pcre16 *, pcre16_extra *,
const unsigned char *);
PCRE_EXP_DECL int pcre32_pattern_to_host_byte_order(pcre32 *, pcre32_extra *,
const unsigned char *);
PCRE_EXP_DECL int pcre16_utf16_to_host_byte_order(PCRE_UCHAR16 *,
PCRE_SPTR16, int, int *, int);
PCRE_EXP_DECL int pcre32_utf32_to_host_byte_order(PCRE_UCHAR32 *,
PCRE_SPTR32, int, int *, int);
/* JIT compiler related functions. */
PCRE_EXP_DECL pcre_jit_stack *pcre_jit_stack_alloc(int, int);
PCRE_EXP_DECL pcre16_jit_stack *pcre16_jit_stack_alloc(int, int);
PCRE_EXP_DECL pcre32_jit_stack *pcre32_jit_stack_alloc(int, int);
PCRE_EXP_DECL void pcre_jit_stack_free(pcre_jit_stack *);
PCRE_EXP_DECL void pcre16_jit_stack_free(pcre16_jit_stack *);
PCRE_EXP_DECL void pcre32_jit_stack_free(pcre32_jit_stack *);
PCRE_EXP_DECL void pcre_assign_jit_stack(pcre_extra *,
pcre_jit_callback, void *);
PCRE_EXP_DECL void pcre16_assign_jit_stack(pcre16_extra *,
pcre16_jit_callback, void *);
PCRE_EXP_DECL void pcre32_assign_jit_stack(pcre32_extra *,
pcre32_jit_callback, void *);
PCRE_EXP_DECL void pcre_jit_free_unused_memory(void);
PCRE_EXP_DECL void pcre16_jit_free_unused_memory(void);
PCRE_EXP_DECL void pcre32_jit_free_unused_memory(void);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* End of pcre.h */
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_exec.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2018 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains pcre_exec(), the externally visible function that does
pattern matching using an NFA algorithm, trying to mimic Perl as closely as
possible. There are also some static supporting functions. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define NLBLOCK md /* Block containing newline information */
#define PSSTART start_subject /* Field containing processed string start */
#define PSEND end_subject /* Field containing processed string end */
#include "pcre_internal.h"
/* Undefine some potentially clashing cpp symbols */
#undef min
#undef max
/* The md->capture_last field uses the lower 16 bits for the last captured
substring (which can never be greater than 65535) and a bit in the top half
to mean "capture vector overflowed". This odd way of doing things was
implemented when it was realized that preserving and restoring the overflow bit
whenever the last capture number was saved/restored made for a neater
interface, and doing it this way saved on (a) another variable, which would
have increased the stack frame size (a big NO-NO in PCRE) and (b) another
separate set of save/restore instructions. The following defines are used in
implementing this. */
#define CAPLMASK 0x0000ffff /* The bits used for last_capture */
#define OVFLMASK 0xffff0000 /* The bits used for the overflow flag */
#define OVFLBIT 0x00010000 /* The bit that is set for overflow */
/* Values for setting in md->match_function_type to indicate two special types
of call to match(). We do it this way to save on using another stack variable,
as stack usage is to be discouraged. */
#define MATCH_CONDASSERT 1 /* Called to check a condition assertion */
#define MATCH_CBEGROUP 2 /* Could-be-empty unlimited repeat group */
/* Non-error returns from the match() function. Error returns are externally
defined PCRE_ERROR_xxx codes, which are all negative. */
#define MATCH_MATCH 1
#define MATCH_NOMATCH 0
/* Special internal returns from the match() function. Make them sufficiently
negative to avoid the external error codes. */
#define MATCH_ACCEPT (-999)
#define MATCH_KETRPOS (-998)
#define MATCH_ONCE (-997)
/* The next 5 must be kept together and in sequence so that a test that checks
for any one of them can use a range. */
#define MATCH_COMMIT (-996)
#define MATCH_PRUNE (-995)
#define MATCH_SKIP (-994)
#define MATCH_SKIP_ARG (-993)
#define MATCH_THEN (-992)
#define MATCH_BACKTRACK_MAX MATCH_THEN
#define MATCH_BACKTRACK_MIN MATCH_COMMIT
/* Maximum number of ints of offset to save on the stack for recursive calls.
If the offset vector is bigger, malloc is used. This should be a multiple of 3,
because the offset vector is always a multiple of 3 long. */
#define REC_STACK_SAVE_MAX 30
/* Min and max values for the common repeats; for the maxima, 0 => infinity */
static const char rep_min[] = { 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, };
static const char rep_max[] = { 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, };
#ifdef PCRE_DEBUG
/*************************************************
* Debugging function to print chars *
*************************************************/
/* Print a sequence of chars in printable format, stopping at the end of the
subject if the requested.
Arguments:
p points to characters
length number to print
is_subject TRUE if printing from within md->start_subject
md pointer to matching data block, if is_subject is TRUE
Returns: nothing
*/
static void
pchars(const pcre_uchar *p, int length, BOOL is_subject, match_data *md)
{
pcre_uint32 c;
BOOL utf = md->utf;
if (is_subject && length > md->end_subject - p) length = md->end_subject - p;
while (length-- > 0)
if (isprint(c = UCHAR21INCTEST(p))) printf("%c", (char)c); else printf("\\x{%02x}", c);
}
#endif
/*************************************************
* Match a back-reference *
*************************************************/
/* Normally, if a back reference hasn't been set, the length that is passed is
negative, so the match always fails. However, in JavaScript compatibility mode,
the length passed is zero. Note that in caseless UTF-8 mode, the number of
subject bytes matched may be different to the number of reference bytes.
Arguments:
offset index into the offset vector
eptr pointer into the subject
length length of reference to be matched (number of bytes)
md points to match data block
caseless TRUE if caseless
Returns: >= 0 the number of subject bytes matched
-1 no match
-2 partial match; always given if at end subject
*/
static int
match_ref(int offset, register PCRE_PUCHAR eptr, int length, match_data *md,
BOOL caseless)
{
PCRE_PUCHAR eptr_start = eptr;
register PCRE_PUCHAR p = md->start_subject + md->offset_vector[offset];
#if defined SUPPORT_UTF && defined SUPPORT_UCP
BOOL utf = md->utf;
#endif
#ifdef PCRE_DEBUG
if (eptr >= md->end_subject)
printf("matching subject <null>");
else
{
printf("matching subject ");
pchars(eptr, length, TRUE, md);
}
printf(" against backref ");
pchars(p, length, FALSE, md);
printf("\n");
#endif
/* Always fail if reference not set (and not JavaScript compatible - in that
case the length is passed as zero). */
if (length < 0) return -1;
/* Separate the caseless case for speed. In UTF-8 mode we can only do this
properly if Unicode properties are supported. Otherwise, we can check only
ASCII characters. */
if (caseless)
{
#if defined SUPPORT_UTF && defined SUPPORT_UCP
if (utf)
{
/* Match characters up to the end of the reference. NOTE: the number of
data units matched may differ, because in UTF-8 there are some characters
whose upper and lower case versions code have different numbers of bytes.
For example, U+023A (2 bytes in UTF-8) is the upper case version of U+2C65
(3 bytes in UTF-8); a sequence of 3 of the former uses 6 bytes, as does a
sequence of two of the latter. It is important, therefore, to check the
length along the reference, not along the subject (earlier code did this
wrong). */
PCRE_PUCHAR endptr = p + length;
while (p < endptr)
{
pcre_uint32 c, d;
const ucd_record *ur;
if (eptr >= md->end_subject) return -2; /* Partial match */
GETCHARINC(c, eptr);
GETCHARINC(d, p);
ur = GET_UCD(d);
if (c != d && c != d + ur->other_case)
{
const pcre_uint32 *pp = PRIV(ucd_caseless_sets) + ur->caseset;
for (;;)
{
if (c < *pp) return -1;
if (c == *pp++) break;
}
}
}
}
else
#endif
/* The same code works when not in UTF-8 mode and in UTF-8 mode when there
is no UCP support. */
{
while (length-- > 0)
{
pcre_uint32 cc, cp;
if (eptr >= md->end_subject) return -2; /* Partial match */
cc = UCHAR21TEST(eptr);
cp = UCHAR21TEST(p);
if (TABLE_GET(cp, md->lcc, cp) != TABLE_GET(cc, md->lcc, cc)) return -1;
p++;
eptr++;
}
}
}
/* In the caseful case, we can just compare the bytes, whether or not we
are in UTF-8 mode. */
else
{
while (length-- > 0)
{
if (eptr >= md->end_subject) return -2; /* Partial match */
if (UCHAR21INCTEST(p) != UCHAR21INCTEST(eptr)) return -1;
}
}
return (int)(eptr - eptr_start);
}
/***************************************************************************
****************************************************************************
RECURSION IN THE match() FUNCTION
The match() function is highly recursive, though not every recursive call
increases the recursive depth. Nevertheless, some regular expressions can cause
it to recurse to a great depth. I was writing for Unix, so I just let it call
itself recursively. This uses the stack for saving everything that has to be
saved for a recursive call. On Unix, the stack can be large, and this works
fine.
It turns out that on some non-Unix-like systems there are problems with
programs that use a lot of stack. (This despite the fact that every last chip
has oodles of memory these days, and techniques for extending the stack have
been known for decades.) So....
There is a fudge, triggered by defining NO_RECURSE, which avoids recursive
calls by keeping local variables that need to be preserved in blocks of memory
obtained from malloc() instead instead of on the stack. Macros are used to
achieve this so that the actual code doesn't look very different to what it
always used to.
The original heap-recursive code used longjmp(). However, it seems that this
can be very slow on some operating systems. Following a suggestion from Stan
Switzer, the use of longjmp() has been abolished, at the cost of having to
provide a unique number for each call to RMATCH. There is no way of generating
a sequence of numbers at compile time in C. I have given them names, to make
them stand out more clearly.
Crude tests on x86 Linux show a small speedup of around 5-8%. However, on
FreeBSD, avoiding longjmp() more than halves the time taken to run the standard
tests. Furthermore, not using longjmp() means that local dynamic variables
don't have indeterminate values; this has meant that the frame size can be
reduced because the result can be "passed back" by straight setting of the
variable instead of being passed in the frame.
****************************************************************************
***************************************************************************/
/* Numbers for RMATCH calls. When this list is changed, the code at HEAP_RETURN
below must be updated in sync. */
enum { RM1=1, RM2, RM3, RM4, RM5, RM6, RM7, RM8, RM9, RM10,
RM11, RM12, RM13, RM14, RM15, RM16, RM17, RM18, RM19, RM20,
RM21, RM22, RM23, RM24, RM25, RM26, RM27, RM28, RM29, RM30,
RM31, RM32, RM33, RM34, RM35, RM36, RM37, RM38, RM39, RM40,
RM41, RM42, RM43, RM44, RM45, RM46, RM47, RM48, RM49, RM50,
RM51, RM52, RM53, RM54, RM55, RM56, RM57, RM58, RM59, RM60,
RM61, RM62, RM63, RM64, RM65, RM66, RM67 };
/* These versions of the macros use the stack, as normal. There are debugging
versions and production versions. Note that the "rw" argument of RMATCH isn't
actually used in this definition. */
#ifndef NO_RECURSE
#define REGISTER register
#ifdef PCRE_DEBUG
#define RMATCH(ra,rb,rc,rd,re,rw) \
{ \
printf("match() called in line %d\n", __LINE__); \
rrc = match(ra,rb,mstart,rc,rd,re,rdepth+1); \
printf("to line %d\n", __LINE__); \
}
#define RRETURN(ra) \
{ \
printf("match() returned %d from line %d\n", ra, __LINE__); \
return ra; \
}
#else
#define RMATCH(ra,rb,rc,rd,re,rw) \
rrc = match(ra,rb,mstart,rc,rd,re,rdepth+1)
#define RRETURN(ra) return ra
#endif
#else
/* These versions of the macros manage a private stack on the heap. Note that
the "rd" argument of RMATCH isn't actually used in this definition. It's the md
argument of match(), which never changes. */
#define REGISTER
#define RMATCH(ra,rb,rc,rd,re,rw)\
{\
heapframe *newframe = frame->Xnextframe;\
if (newframe == NULL)\
{\
newframe = (heapframe *)(PUBL(stack_malloc))(sizeof(heapframe));\
if (newframe == NULL) RRETURN(PCRE_ERROR_NOMEMORY);\
newframe->Xnextframe = NULL;\
frame->Xnextframe = newframe;\
}\
frame->Xwhere = rw;\
newframe->Xeptr = ra;\
newframe->Xecode = rb;\
newframe->Xmstart = mstart;\
newframe->Xoffset_top = rc;\
newframe->Xeptrb = re;\
newframe->Xrdepth = frame->Xrdepth + 1;\
newframe->Xprevframe = frame;\
frame = newframe;\
DPRINTF(("restarting from line %d\n", __LINE__));\
goto HEAP_RECURSE;\
L_##rw:\
DPRINTF(("jumped back to line %d\n", __LINE__));\
}
#define RRETURN(ra)\
{\
heapframe *oldframe = frame;\
frame = oldframe->Xprevframe;\
if (frame != NULL)\
{\
rrc = ra;\
goto HEAP_RETURN;\
}\
return ra;\
}
/* Structure for remembering the local variables in a private frame */
typedef struct heapframe {
struct heapframe *Xprevframe;
struct heapframe *Xnextframe;
/* Function arguments that may change */
PCRE_PUCHAR Xeptr;
const pcre_uchar *Xecode;
PCRE_PUCHAR Xmstart;
int Xoffset_top;
eptrblock *Xeptrb;
unsigned int Xrdepth;
/* Function local variables */
PCRE_PUCHAR Xcallpat;
#ifdef SUPPORT_UTF
PCRE_PUCHAR Xcharptr;
#endif
PCRE_PUCHAR Xdata;
PCRE_PUCHAR Xnext;
PCRE_PUCHAR Xpp;
PCRE_PUCHAR Xprev;
PCRE_PUCHAR Xsaved_eptr;
recursion_info Xnew_recursive;
BOOL Xcur_is_word;
BOOL Xcondition;
BOOL Xprev_is_word;
#ifdef SUPPORT_UCP
int Xprop_type;
unsigned int Xprop_value;
int Xprop_fail_result;
int Xoclength;
pcre_uchar Xocchars[6];
#endif
int Xcodelink;
int Xctype;
unsigned int Xfc;
int Xfi;
int Xlength;
int Xmax;
int Xmin;
unsigned int Xnumber;
int Xoffset;
unsigned int Xop;
pcre_int32 Xsave_capture_last;
int Xsave_offset1, Xsave_offset2, Xsave_offset3;
int Xstacksave[REC_STACK_SAVE_MAX];
eptrblock Xnewptrb;
/* Where to jump back to */
int Xwhere;
} heapframe;
#endif
/***************************************************************************
***************************************************************************/
/*************************************************
* Match from current position *
*************************************************/
/* This function is called recursively in many circumstances. Whenever it
returns a negative (error) response, the outer incarnation must also return the
same response. */
/* These macros pack up tests that are used for partial matching, and which
appear several times in the code. We set the "hit end" flag if the pointer is
at the end of the subject and also past the start of the subject (i.e.
something has been matched). For hard partial matching, we then return
immediately. The second one is used when we already know we are past the end of
the subject. */
#define CHECK_PARTIAL()\
if (md->partial != 0 && eptr >= md->end_subject && \
eptr > md->start_used_ptr) \
{ \
md->hitend = TRUE; \
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL); \
}
#define SCHECK_PARTIAL()\
if (md->partial != 0 && eptr > md->start_used_ptr) \
{ \
md->hitend = TRUE; \
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL); \
}
/* Performance note: It might be tempting to extract commonly used fields from
the md structure (e.g. utf, end_subject) into individual variables to improve
performance. Tests using gcc on a SPARC disproved this; in the first case, it
made performance worse.
Arguments:
eptr pointer to current character in subject
ecode pointer to current position in compiled code
mstart pointer to the current match start position (can be modified
by encountering \K)
offset_top current top pointer
md pointer to "static" info for the match
eptrb pointer to chain of blocks containing eptr at start of
brackets - for testing for empty matches
rdepth the recursion depth
Returns: MATCH_MATCH if matched ) these values are >= 0
MATCH_NOMATCH if failed to match )
a negative MATCH_xxx value for PRUNE, SKIP, etc
a negative PCRE_ERROR_xxx value if aborted by an error condition
(e.g. stopped by repeated call or recursion limit)
*/
static int
match(REGISTER PCRE_PUCHAR eptr, REGISTER const pcre_uchar *ecode,
PCRE_PUCHAR mstart, int offset_top, match_data *md, eptrblock *eptrb,
unsigned int rdepth)
{
/* These variables do not need to be preserved over recursion in this function,
so they can be ordinary variables in all cases. Mark some of them with
"register" because they are used a lot in loops. */
register int rrc; /* Returns from recursive calls */
register int i; /* Used for loops not involving calls to RMATCH() */
register pcre_uint32 c; /* Character values not kept over RMATCH() calls */
register BOOL utf; /* Local copy of UTF flag for speed */
BOOL minimize, possessive; /* Quantifier options */
BOOL caseless;
int condcode;
/* When recursion is not being used, all "local" variables that have to be
preserved over calls to RMATCH() are part of a "frame". We set up the top-level
frame on the stack here; subsequent instantiations are obtained from the heap
whenever RMATCH() does a "recursion". See the macro definitions above. Putting
the top-level on the stack rather than malloc-ing them all gives a performance
boost in many cases where there is not much "recursion". */
#ifdef NO_RECURSE
heapframe *frame = (heapframe *)md->match_frames_base;
/* Copy in the original argument variables */
frame->Xeptr = eptr;
frame->Xecode = ecode;
frame->Xmstart = mstart;
frame->Xoffset_top = offset_top;
frame->Xeptrb = eptrb;
frame->Xrdepth = rdepth;
/* This is where control jumps back to to effect "recursion" */
HEAP_RECURSE:
/* Macros make the argument variables come from the current frame */
#define eptr frame->Xeptr
#define ecode frame->Xecode
#define mstart frame->Xmstart
#define offset_top frame->Xoffset_top
#define eptrb frame->Xeptrb
#define rdepth frame->Xrdepth
/* Ditto for the local variables */
#ifdef SUPPORT_UTF
#define charptr frame->Xcharptr
#endif
#define callpat frame->Xcallpat
#define codelink frame->Xcodelink
#define data frame->Xdata
#define next frame->Xnext
#define pp frame->Xpp
#define prev frame->Xprev
#define saved_eptr frame->Xsaved_eptr
#define new_recursive frame->Xnew_recursive
#define cur_is_word frame->Xcur_is_word
#define condition frame->Xcondition
#define prev_is_word frame->Xprev_is_word
#ifdef SUPPORT_UCP
#define prop_type frame->Xprop_type
#define prop_value frame->Xprop_value
#define prop_fail_result frame->Xprop_fail_result
#define oclength frame->Xoclength
#define occhars frame->Xocchars
#endif
#define ctype frame->Xctype
#define fc frame->Xfc
#define fi frame->Xfi
#define length frame->Xlength
#define max frame->Xmax
#define min frame->Xmin
#define number frame->Xnumber
#define offset frame->Xoffset
#define op frame->Xop
#define save_capture_last frame->Xsave_capture_last
#define save_offset1 frame->Xsave_offset1
#define save_offset2 frame->Xsave_offset2
#define save_offset3 frame->Xsave_offset3
#define stacksave frame->Xstacksave
#define newptrb frame->Xnewptrb
/* When recursion is being used, local variables are allocated on the stack and
get preserved during recursion in the normal way. In this environment, fi and
i, and fc and c, can be the same variables. */
#else /* NO_RECURSE not defined */
#define fi i
#define fc c
/* Many of the following variables are used only in small blocks of the code.
My normal style of coding would have declared them within each of those blocks.
However, in order to accommodate the version of this code that uses an external
"stack" implemented on the heap, it is easier to declare them all here, so the
declarations can be cut out in a block. The only declarations within blocks
below are for variables that do not have to be preserved over a recursive call
to RMATCH(). */
#ifdef SUPPORT_UTF
const pcre_uchar *charptr;
#endif
const pcre_uchar *callpat;
const pcre_uchar *data;
const pcre_uchar *next;
PCRE_PUCHAR pp;
const pcre_uchar *prev;
PCRE_PUCHAR saved_eptr;
recursion_info new_recursive;
BOOL cur_is_word;
BOOL condition;
BOOL prev_is_word;
#ifdef SUPPORT_UCP
int prop_type;
unsigned int prop_value;
int prop_fail_result;
int oclength;
pcre_uchar occhars[6];
#endif
int codelink;
int ctype;
int length;
int max;
int min;
unsigned int number;
int offset;
unsigned int op;
pcre_int32 save_capture_last;
int save_offset1, save_offset2, save_offset3;
int stacksave[REC_STACK_SAVE_MAX];
eptrblock newptrb;
/* There is a special fudge for calling match() in a way that causes it to
measure the size of its basic stack frame when the stack is being used for
recursion. The second argument (ecode) being NULL triggers this behaviour. It
cannot normally ever be NULL. The return is the negated value of the frame
size. */
if (ecode == NULL)
{
if (rdepth == 0)
return match((PCRE_PUCHAR)&rdepth, NULL, NULL, 0, NULL, NULL, 1);
else
{
int len = (int)((char *)&rdepth - (char *)eptr);
return (len > 0)? -len : len;
}
}
#endif /* NO_RECURSE */
/* To save space on the stack and in the heap frame, I have doubled up on some
of the local variables that are used only in localised parts of the code, but
still need to be preserved over recursive calls of match(). These macros define
the alternative names that are used. */
#define allow_zero cur_is_word
#define cbegroup condition
#define code_offset codelink
#define condassert condition
#define matched_once prev_is_word
#define foc number
#define save_mark data
/* These statements are here to stop the compiler complaining about unitialized
variables. */
#ifdef SUPPORT_UCP
prop_value = 0;
prop_fail_result = 0;
#endif
/* This label is used for tail recursion, which is used in a few cases even
when NO_RECURSE is not defined, in order to reduce the amount of stack that is
used. Thanks to Ian Taylor for noticing this possibility and sending the
original patch. */
TAIL_RECURSE:
/* OK, now we can get on with the real code of the function. Recursive calls
are specified by the macro RMATCH and RRETURN is used to return. When
NO_RECURSE is *not* defined, these just turn into a recursive call to match()
and a "return", respectively (possibly with some debugging if PCRE_DEBUG is
defined). However, RMATCH isn't like a function call because it's quite a
complicated macro. It has to be used in one particular way. This shouldn't,
however, impact performance when true recursion is being used. */
#ifdef SUPPORT_UTF
utf = md->utf; /* Local copy of the flag */
#else
utf = FALSE;
#endif
/* First check that we haven't called match() too many times, or that we
haven't exceeded the recursive call limit. */
if (md->match_call_count++ >= md->match_limit) RRETURN(PCRE_ERROR_MATCHLIMIT);
if (rdepth >= md->match_limit_recursion) RRETURN(PCRE_ERROR_RECURSIONLIMIT);
/* At the start of a group with an unlimited repeat that may match an empty
string, the variable md->match_function_type is set to MATCH_CBEGROUP. It is
done this way to save having to use another function argument, which would take
up space on the stack. See also MATCH_CONDASSERT below.
When MATCH_CBEGROUP is set, add the current subject pointer to the chain of
such remembered pointers, to be checked when we hit the closing ket, in order
to break infinite loops that match no characters. When match() is called in
other circumstances, don't add to the chain. The MATCH_CBEGROUP feature must
NOT be used with tail recursion, because the memory block that is used is on
the stack, so a new one may be required for each match(). */
if (md->match_function_type == MATCH_CBEGROUP)
{
newptrb.epb_saved_eptr = eptr;
newptrb.epb_prev = eptrb;
eptrb = &newptrb;
md->match_function_type = 0;
}
/* Now start processing the opcodes. */
for (;;)
{
minimize = possessive = FALSE;
op = *ecode;
switch(op)
{
case OP_MARK:
md->nomatch_mark = ecode + 2;
md->mark = NULL; /* In case previously set by assertion */
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
eptrb, RM55);
if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
md->mark == NULL) md->mark = ecode + 2;
/* A return of MATCH_SKIP_ARG means that matching failed at SKIP with an
argument, and we must check whether that argument matches this MARK's
argument. It is passed back in md->start_match_ptr (an overloading of that
variable). If it does match, we reset that variable to the current subject
position and return MATCH_SKIP. Otherwise, pass back the return code
unaltered. */
else if (rrc == MATCH_SKIP_ARG &&
STRCMP_UC_UC_TEST(ecode + 2, md->start_match_ptr) == 0)
{
md->start_match_ptr = eptr;
RRETURN(MATCH_SKIP);
}
RRETURN(rrc);
case OP_FAIL:
RRETURN(MATCH_NOMATCH);
case OP_COMMIT:
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
eptrb, RM52);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
RRETURN(MATCH_COMMIT);
case OP_PRUNE:
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
eptrb, RM51);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
RRETURN(MATCH_PRUNE);
case OP_PRUNE_ARG:
md->nomatch_mark = ecode + 2;
md->mark = NULL; /* In case previously set by assertion */
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
eptrb, RM56);
if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
md->mark == NULL) md->mark = ecode + 2;
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
RRETURN(MATCH_PRUNE);
case OP_SKIP:
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
eptrb, RM53);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
md->start_match_ptr = eptr; /* Pass back current position */
RRETURN(MATCH_SKIP);
/* Note that, for Perl compatibility, SKIP with an argument does NOT set
nomatch_mark. When a pattern match ends with a SKIP_ARG for which there was
not a matching mark, we have to re-run the match, ignoring the SKIP_ARG
that failed and any that precede it (either they also failed, or were not
triggered). To do this, we maintain a count of executed SKIP_ARGs. If a
SKIP_ARG gets to top level, the match is re-run with md->ignore_skip_arg
set to the count of the one that failed. */
case OP_SKIP_ARG:
md->skip_arg_count++;
if (md->skip_arg_count <= md->ignore_skip_arg)
{
ecode += PRIV(OP_lengths)[*ecode] + ecode[1];
break;
}
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
eptrb, RM57);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
/* Pass back the current skip name by overloading md->start_match_ptr and
returning the special MATCH_SKIP_ARG return code. This will either be
caught by a matching MARK, or get to the top, where it causes a rematch
with md->ignore_skip_arg set to the value of md->skip_arg_count. */
md->start_match_ptr = ecode + 2;
RRETURN(MATCH_SKIP_ARG);
/* For THEN (and THEN_ARG) we pass back the address of the opcode, so that
the branch in which it occurs can be determined. Overload the start of
match pointer to do this. */
case OP_THEN:
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
eptrb, RM54);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
md->start_match_ptr = ecode;
RRETURN(MATCH_THEN);
case OP_THEN_ARG:
md->nomatch_mark = ecode + 2;
md->mark = NULL; /* In case previously set by assertion */
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top,
md, eptrb, RM58);
if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
md->mark == NULL) md->mark = ecode + 2;
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
md->start_match_ptr = ecode;
RRETURN(MATCH_THEN);
/* Handle an atomic group that does not contain any capturing parentheses.
This can be handled like an assertion. Prior to 8.13, all atomic groups
were handled this way. In 8.13, the code was changed as below for ONCE, so
that backups pass through the group and thereby reset captured values.
However, this uses a lot more stack, so in 8.20, atomic groups that do not
contain any captures generate OP_ONCE_NC, which can be handled in the old,
less stack intensive way.
Check the alternative branches in turn - the matching won't pass the KET
for this kind of subpattern. If any one branch matches, we carry on as at
the end of a normal bracket, leaving the subject pointer, but resetting
the start-of-match value in case it was changed by \K. */
case OP_ONCE_NC:
prev = ecode;
saved_eptr = eptr;
save_mark = md->mark;
do
{
RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM64);
if (rrc == MATCH_MATCH) /* Note: _not_ MATCH_ACCEPT */
{
mstart = md->start_match_ptr;
break;
}
if (rrc == MATCH_THEN)
{
next = ecode + GET(ecode,1);
if (md->start_match_ptr < next &&
(*ecode == OP_ALT || *next == OP_ALT))
rrc = MATCH_NOMATCH;
}
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
ecode += GET(ecode,1);
md->mark = save_mark;
}
while (*ecode == OP_ALT);
/* If hit the end of the group (which could be repeated), fail */
if (*ecode != OP_ONCE_NC && *ecode != OP_ALT) RRETURN(MATCH_NOMATCH);
/* Continue as from after the group, updating the offsets high water
mark, since extracts may have been taken. */
do ecode += GET(ecode, 1); while (*ecode == OP_ALT);
offset_top = md->end_offset_top;
eptr = md->end_match_ptr;
/* For a non-repeating ket, just continue at this level. This also
happens for a repeating ket if no characters were matched in the group.
This is the forcible breaking of infinite loops as implemented in Perl
5.005. */
if (*ecode == OP_KET || eptr == saved_eptr)
{
ecode += 1+LINK_SIZE;
break;
}
/* The repeating kets try the rest of the pattern or restart from the
preceding bracket, in the appropriate order. The second "call" of match()
uses tail recursion, to avoid using another stack frame. */
if (*ecode == OP_KETRMIN)
{
RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM65);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
ecode = prev;
goto TAIL_RECURSE;
}
else /* OP_KETRMAX */
{
RMATCH(eptr, prev, offset_top, md, eptrb, RM66);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
ecode += 1 + LINK_SIZE;
goto TAIL_RECURSE;
}
/* Control never gets here */
/* Handle a capturing bracket, other than those that are possessive with an
unlimited repeat. If there is space in the offset vector, save the current
subject position in the working slot at the top of the vector. We mustn't
change the current values of the data slot, because they may be set from a
previous iteration of this group, and be referred to by a reference inside
the group. A failure to match might occur after the group has succeeded,
if something later on doesn't match. For this reason, we need to restore
the working value and also the values of the final offsets, in case they
were set by a previous iteration of the same bracket.
If there isn't enough space in the offset vector, treat this as if it were
a non-capturing bracket. Don't worry about setting the flag for the error
case here; that is handled in the code for KET. */
case OP_CBRA:
case OP_SCBRA:
number = GET2(ecode, 1+LINK_SIZE);
offset = number << 1;
#ifdef PCRE_DEBUG
printf("start bracket %d\n", number);
printf("subject=");
pchars(eptr, 16, TRUE, md);
printf("\n");
#endif
if (offset < md->offset_max)
{
save_offset1 = md->offset_vector[offset];
save_offset2 = md->offset_vector[offset+1];
save_offset3 = md->offset_vector[md->offset_end - number];
save_capture_last = md->capture_last;
save_mark = md->mark;
DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));
md->offset_vector[md->offset_end - number] =
(int)(eptr - md->start_subject);
for (;;)
{
if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
eptrb, RM1);
if (rrc == MATCH_ONCE) break; /* Backing up through an atomic group */
/* If we backed up to a THEN, check whether it is within the current
branch by comparing the address of the THEN that is passed back with
the end of the branch. If it is within the current branch, and the
branch is one of two or more alternatives (it either starts or ends
with OP_ALT), we have reached the limit of THEN's action, so convert
the return code to NOMATCH, which will cause normal backtracking to
happen from now on. Otherwise, THEN is passed back to an outer
alternative. This implements Perl's treatment of parenthesized groups,
where a group not containing | does not affect the current alternative,
that is, (X) is NOT the same as (X|(*F)). */
if (rrc == MATCH_THEN)
{
next = ecode + GET(ecode,1);
if (md->start_match_ptr < next &&
(*ecode == OP_ALT || *next == OP_ALT))
rrc = MATCH_NOMATCH;
}
/* Anything other than NOMATCH is passed back. */
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
md->capture_last = save_capture_last;
ecode += GET(ecode, 1);
md->mark = save_mark;
if (*ecode != OP_ALT) break;
}
DPRINTF(("bracket %d failed\n", number));
md->offset_vector[offset] = save_offset1;
md->offset_vector[offset+1] = save_offset2;
md->offset_vector[md->offset_end - number] = save_offset3;
/* At this point, rrc will be one of MATCH_ONCE or MATCH_NOMATCH. */
RRETURN(rrc);
}
/* FALL THROUGH ... Insufficient room for saving captured contents. Treat
as a non-capturing bracket. */
/* VVVVVVVVVVVVVVVVVVVVVVVVV */
/* VVVVVVVVVVVVVVVVVVVVVVVVV */
DPRINTF(("insufficient capture room: treat as non-capturing\n"));
/* VVVVVVVVVVVVVVVVVVVVVVVVV */
/* VVVVVVVVVVVVVVVVVVVVVVVVV */
/* Non-capturing or atomic group, except for possessive with unlimited
repeat and ONCE group with no captures. Loop for all the alternatives.
When we get to the final alternative within the brackets, we used to return
the result of a recursive call to match() whatever happened so it was
possible to reduce stack usage by turning this into a tail recursion,
except in the case of a possibly empty group. However, now that there is
the possiblity of (*THEN) occurring in the final alternative, this
optimization is no longer always possible.
We can optimize if we know there are no (*THEN)s in the pattern; at present
this is the best that can be done.
MATCH_ONCE is returned when the end of an atomic group is successfully
reached, but subsequent matching fails. It passes back up the tree (causing
captured values to be reset) until the original atomic group level is
reached. This is tested by comparing md->once_target with the start of the
group. At this point, the return is converted into MATCH_NOMATCH so that
previous backup points can be taken. */
case OP_ONCE:
case OP_BRA:
case OP_SBRA:
DPRINTF(("start non-capturing bracket\n"));
for (;;)
{
if (op >= OP_SBRA || op == OP_ONCE)
md->match_function_type = MATCH_CBEGROUP;
/* If this is not a possibly empty group, and there are no (*THEN)s in
the pattern, and this is the final alternative, optimize as described
above. */
else if (!md->hasthen && ecode[GET(ecode, 1)] != OP_ALT)
{
ecode += PRIV(OP_lengths)[*ecode];
goto TAIL_RECURSE;
}
/* In all other cases, we have to make another call to match(). */
save_mark = md->mark;
save_capture_last = md->capture_last;
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md, eptrb,
RM2);
/* See comment in the code for capturing groups above about handling
THEN. */
if (rrc == MATCH_THEN)
{
next = ecode + GET(ecode,1);
if (md->start_match_ptr < next &&
(*ecode == OP_ALT || *next == OP_ALT))
rrc = MATCH_NOMATCH;
}
if (rrc != MATCH_NOMATCH)
{
if (rrc == MATCH_ONCE)
{
const pcre_uchar *scode = ecode;
if (*scode != OP_ONCE) /* If not at start, find it */
{
while (*scode == OP_ALT) scode += GET(scode, 1);
scode -= GET(scode, 1);
}
if (md->once_target == scode) rrc = MATCH_NOMATCH;
}
RRETURN(rrc);
}
ecode += GET(ecode, 1);
md->mark = save_mark;
if (*ecode != OP_ALT) break;
md->capture_last = save_capture_last;
}
RRETURN(MATCH_NOMATCH);
/* Handle possessive capturing brackets with an unlimited repeat. We come
here from BRAZERO with allow_zero set TRUE. The offset_vector values are
handled similarly to the normal case above. However, the matching is
different. The end of these brackets will always be OP_KETRPOS, which
returns MATCH_KETRPOS without going further in the pattern. By this means
we can handle the group by iteration rather than recursion, thereby
reducing the amount of stack needed. */
case OP_CBRAPOS:
case OP_SCBRAPOS:
allow_zero = FALSE;
POSSESSIVE_CAPTURE:
number = GET2(ecode, 1+LINK_SIZE);
offset = number << 1;
#ifdef PCRE_DEBUG
printf("start possessive bracket %d\n", number);
printf("subject=");
pchars(eptr, 16, TRUE, md);
printf("\n");
#endif
if (offset >= md->offset_max) goto POSSESSIVE_NON_CAPTURE;
matched_once = FALSE;
code_offset = (int)(ecode - md->start_code);
save_offset1 = md->offset_vector[offset];
save_offset2 = md->offset_vector[offset+1];
save_offset3 = md->offset_vector[md->offset_end - number];
save_capture_last = md->capture_last;
DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));
/* Each time round the loop, save the current subject position for use
when the group matches. For MATCH_MATCH, the group has matched, so we
restart it with a new subject starting position, remembering that we had
at least one match. For MATCH_NOMATCH, carry on with the alternatives, as
usual. If we haven't matched any alternatives in any iteration, check to
see if a previous iteration matched. If so, the group has matched;
continue from afterwards. Otherwise it has failed; restore the previous
capture values before returning NOMATCH. */
for (;;)
{
md->offset_vector[md->offset_end - number] =
(int)(eptr - md->start_subject);
if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
eptrb, RM63);
if (rrc == MATCH_KETRPOS)
{
offset_top = md->end_offset_top;
ecode = md->start_code + code_offset;
save_capture_last = md->capture_last;
matched_once = TRUE;
mstart = md->start_match_ptr; /* In case \K changed it */
if (eptr == md->end_match_ptr) /* Matched an empty string */
{
do ecode += GET(ecode, 1); while (*ecode == OP_ALT);
break;
}
eptr = md->end_match_ptr;
continue;
}
/* See comment in the code for capturing groups above about handling
THEN. */
if (rrc == MATCH_THEN)
{
next = ecode + GET(ecode,1);
if (md->start_match_ptr < next &&
(*ecode == OP_ALT || *next == OP_ALT))
rrc = MATCH_NOMATCH;
}
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
md->capture_last = save_capture_last;
ecode += GET(ecode, 1);
if (*ecode != OP_ALT) break;
}
if (!matched_once)
{
md->offset_vector[offset] = save_offset1;
md->offset_vector[offset+1] = save_offset2;
md->offset_vector[md->offset_end - number] = save_offset3;
}
if (allow_zero || matched_once)
{
ecode += 1 + LINK_SIZE;
break;
}
RRETURN(MATCH_NOMATCH);
/* Non-capturing possessive bracket with unlimited repeat. We come here
from BRAZERO with allow_zero = TRUE. The code is similar to the above,
without the capturing complication. It is written out separately for speed
and cleanliness. */
case OP_BRAPOS:
case OP_SBRAPOS:
allow_zero = FALSE;
POSSESSIVE_NON_CAPTURE:
matched_once = FALSE;
code_offset = (int)(ecode - md->start_code);
save_capture_last = md->capture_last;
for (;;)
{
if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
eptrb, RM48);
if (rrc == MATCH_KETRPOS)
{
offset_top = md->end_offset_top;
ecode = md->start_code + code_offset;
matched_once = TRUE;
mstart = md->start_match_ptr; /* In case \K reset it */
if (eptr == md->end_match_ptr) /* Matched an empty string */
{
do ecode += GET(ecode, 1); while (*ecode == OP_ALT);
break;
}
eptr = md->end_match_ptr;
continue;
}
/* See comment in the code for capturing groups above about handling
THEN. */
if (rrc == MATCH_THEN)
{
next = ecode + GET(ecode,1);
if (md->start_match_ptr < next &&
(*ecode == OP_ALT || *next == OP_ALT))
rrc = MATCH_NOMATCH;
}
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
ecode += GET(ecode, 1);
if (*ecode != OP_ALT) break;
md->capture_last = save_capture_last;
}
if (matched_once || allow_zero)
{
ecode += 1 + LINK_SIZE;
break;
}
RRETURN(MATCH_NOMATCH);
/* Control never reaches here. */
/* Conditional group: compilation checked that there are no more than two
branches. If the condition is false, skipping the first branch takes us
past the end of the item if there is only one branch, but that's exactly
what we want. */
case OP_COND:
case OP_SCOND:
/* The variable codelink will be added to ecode when the condition is
false, to get to the second branch. Setting it to the offset to the ALT
or KET, then incrementing ecode achieves this effect. We now have ecode
pointing to the condition or callout. */
codelink = GET(ecode, 1); /* Offset to the second branch */
ecode += 1 + LINK_SIZE; /* From this opcode */
/* Because of the way auto-callout works during compile, a callout item is
inserted between OP_COND and an assertion condition. */
if (*ecode == OP_CALLOUT)
{
if (PUBL(callout) != NULL)
{
PUBL(callout_block) cb;
cb.version = 2; /* Version 1 of the callout block */
cb.callout_number = ecode[1];
cb.offset_vector = md->offset_vector;
#if defined COMPILE_PCRE8
cb.subject = (PCRE_SPTR)md->start_subject;
#elif defined COMPILE_PCRE16
cb.subject = (PCRE_SPTR16)md->start_subject;
#elif defined COMPILE_PCRE32
cb.subject = (PCRE_SPTR32)md->start_subject;
#endif
cb.subject_length = (int)(md->end_subject - md->start_subject);
cb.start_match = (int)(mstart - md->start_subject);
cb.current_position = (int)(eptr - md->start_subject);
cb.pattern_position = GET(ecode, 2);
cb.next_item_length = GET(ecode, 2 + LINK_SIZE);
cb.capture_top = offset_top/2;
cb.capture_last = md->capture_last & CAPLMASK;
/* Internal change requires this for API compatibility. */
if (cb.capture_last == 0) cb.capture_last = -1;
cb.callout_data = md->callout_data;
cb.mark = md->nomatch_mark;
if ((rrc = (*PUBL(callout))(&cb)) > 0) RRETURN(MATCH_NOMATCH);
if (rrc < 0) RRETURN(rrc);
}
/* Advance ecode past the callout, so it now points to the condition. We
must adjust codelink so that the value of ecode+codelink is unchanged. */
ecode += PRIV(OP_lengths)[OP_CALLOUT];
codelink -= PRIV(OP_lengths)[OP_CALLOUT];
}
/* Test the various possible conditions */
condition = FALSE;
switch(condcode = *ecode)
{
case OP_RREF: /* Numbered group recursion test */
if (md->recursive != NULL) /* Not recursing => FALSE */
{
unsigned int recno = GET2(ecode, 1); /* Recursion group number*/
condition = (recno == RREF_ANY || recno == md->recursive->group_num);
}
break;
case OP_DNRREF: /* Duplicate named group recursion test */
if (md->recursive != NULL)
{
int count = GET2(ecode, 1 + IMM2_SIZE);
pcre_uchar *slot = md->name_table + GET2(ecode, 1) * md->name_entry_size;
while (count-- > 0)
{
unsigned int recno = GET2(slot, 0);
condition = recno == md->recursive->group_num;
if (condition) break;
slot += md->name_entry_size;
}
}
break;
case OP_CREF: /* Numbered group used test */
offset = GET2(ecode, 1) << 1; /* Doubled ref number */
condition = offset < offset_top && md->offset_vector[offset] >= 0;
break;
case OP_DNCREF: /* Duplicate named group used test */
{
int count = GET2(ecode, 1 + IMM2_SIZE);
pcre_uchar *slot = md->name_table + GET2(ecode, 1) * md->name_entry_size;
while (count-- > 0)
{
offset = GET2(slot, 0) << 1;
condition = offset < offset_top && md->offset_vector[offset] >= 0;
if (condition) break;
slot += md->name_entry_size;
}
}
break;
case OP_DEF: /* DEFINE - always false */
case OP_FAIL: /* From optimized (?!) condition */
break;
/* The condition is an assertion. Call match() to evaluate it - setting
md->match_function_type to MATCH_CONDASSERT causes it to stop at the end
of an assertion. */
default:
md->match_function_type = MATCH_CONDASSERT;
RMATCH(eptr, ecode, offset_top, md, NULL, RM3);
if (rrc == MATCH_MATCH)
{
if (md->end_offset_top > offset_top)
offset_top = md->end_offset_top; /* Captures may have happened */
condition = TRUE;
/* Advance ecode past the assertion to the start of the first branch,
but adjust it so that the general choosing code below works. If the
assertion has a quantifier that allows zero repeats we must skip over
the BRAZERO. This is a lunatic thing to do, but somebody did! */
if (*ecode == OP_BRAZERO) ecode++;
ecode += GET(ecode, 1);
while (*ecode == OP_ALT) ecode += GET(ecode, 1);
ecode += 1 + LINK_SIZE - PRIV(OP_lengths)[condcode];
}
/* PCRE doesn't allow the effect of (*THEN) to escape beyond an
assertion; it is therefore treated as NOMATCH. Any other return is an
error. */
else if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN)
{
RRETURN(rrc); /* Need braces because of following else */
}
break;
}
/* Choose branch according to the condition */
ecode += condition? PRIV(OP_lengths)[condcode] : codelink;
/* We are now at the branch that is to be obeyed. As there is only one, we
can use tail recursion to avoid using another stack frame, except when
there is unlimited repeat of a possibly empty group. In the latter case, a
recursive call to match() is always required, unless the second alternative
doesn't exist, in which case we can just plough on. Note that, for
compatibility with Perl, the | in a conditional group is NOT treated as
creating two alternatives. If a THEN is encountered in the branch, it
propagates out to the enclosing alternative (unless nested in a deeper set
of alternatives, of course). */
if (condition || ecode[-(1+LINK_SIZE)] == OP_ALT)
{
if (op != OP_SCOND)
{
goto TAIL_RECURSE;
}
md->match_function_type = MATCH_CBEGROUP;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM49);
RRETURN(rrc);
}
/* Condition false & no alternative; continue after the group. */
else
{
}
break;
/* Before OP_ACCEPT there may be any number of OP_CLOSE opcodes,
to close any currently open capturing brackets. */
case OP_CLOSE:
number = GET2(ecode, 1); /* Must be less than 65536 */
offset = number << 1;
#ifdef PCRE_DEBUG
printf("end bracket %d at *ACCEPT", number);
printf("\n");
#endif
md->capture_last = (md->capture_last & OVFLMASK) | number;
if (offset >= md->offset_max) md->capture_last |= OVFLBIT; else
{
md->offset_vector[offset] =
md->offset_vector[md->offset_end - number];
md->offset_vector[offset+1] = (int)(eptr - md->start_subject);
/* If this group is at or above the current highwater mark, ensure that
any groups between the current high water mark and this group are marked
unset and then update the high water mark. */
if (offset >= offset_top)
{
register int *iptr = md->offset_vector + offset_top;
register int *iend = md->offset_vector + offset;
while (iptr < iend) *iptr++ = -1;
offset_top = offset + 2;
}
}
ecode += 1 + IMM2_SIZE;
break;
/* End of the pattern, either real or forced. */
case OP_END:
case OP_ACCEPT:
case OP_ASSERT_ACCEPT:
/* If we have matched an empty string, fail if not in an assertion and not
in a recursion if either PCRE_NOTEMPTY is set, or if PCRE_NOTEMPTY_ATSTART
is set and we have matched at the start of the subject. In both cases,
backtracking will then try other alternatives, if any. */
if (eptr == mstart && op != OP_ASSERT_ACCEPT &&
md->recursive == NULL &&
(md->notempty ||
(md->notempty_atstart &&
mstart == md->start_subject + md->start_offset)))
RRETURN(MATCH_NOMATCH);
/* Otherwise, we have a match. */
md->end_match_ptr = eptr; /* Record where we ended */
md->end_offset_top = offset_top; /* and how many extracts were taken */
md->start_match_ptr = mstart; /* and the start (\K can modify) */
/* For some reason, the macros don't work properly if an expression is
given as the argument to RRETURN when the heap is in use. */
rrc = (op == OP_END)? MATCH_MATCH : MATCH_ACCEPT;
RRETURN(rrc);
/* Assertion brackets. Check the alternative branches in turn - the
matching won't pass the KET for an assertion. If any one branch matches,
the assertion is true. Lookbehind assertions have an OP_REVERSE item at the
start of each branch to move the current point backwards, so the code at
this level is identical to the lookahead case. When the assertion is part
of a condition, we want to return immediately afterwards. The caller of
this incarnation of the match() function will have set MATCH_CONDASSERT in
md->match_function type, and one of these opcodes will be the first opcode
that is processed. We use a local variable that is preserved over calls to
match() to remember this case. */
case OP_ASSERT:
case OP_ASSERTBACK:
save_mark = md->mark;
if (md->match_function_type == MATCH_CONDASSERT)
{
condassert = TRUE;
md->match_function_type = 0;
}
else condassert = FALSE;
/* Loop for each branch */
do
{
RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM4);
/* A match means that the assertion is true; break out of the loop
that matches its alternatives. */
if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT)
{
mstart = md->start_match_ptr; /* In case \K reset it */
break;
}
/* If not matched, restore the previous mark setting. */
md->mark = save_mark;
/* See comment in the code for capturing groups above about handling
THEN. */
if (rrc == MATCH_THEN)
{
next = ecode + GET(ecode,1);
if (md->start_match_ptr < next &&
(*ecode == OP_ALT || *next == OP_ALT))
rrc = MATCH_NOMATCH;
}
/* Anything other than NOMATCH causes the entire assertion to fail,
passing back the return code. This includes COMMIT, SKIP, PRUNE and an
uncaptured THEN, which means they take their normal effect. This
consistent approach does not always have exactly the same effect as in
Perl. */
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
ecode += GET(ecode, 1);
}
while (*ecode == OP_ALT); /* Continue for next alternative */
/* If we have tried all the alternative branches, the assertion has
failed. If not, we broke out after a match. */
if (*ecode == OP_KET) RRETURN(MATCH_NOMATCH);
/* If checking an assertion for a condition, return MATCH_MATCH. */
if (condassert) RRETURN(MATCH_MATCH);
/* Continue from after a successful assertion, updating the offsets high
water mark, since extracts may have been taken during the assertion. */
do ecode += GET(ecode,1); while (*ecode == OP_ALT);
ecode += 1 + LINK_SIZE;
offset_top = md->end_offset_top;
continue;
/* Negative assertion: all branches must fail to match for the assertion to
succeed. */
case OP_ASSERT_NOT:
case OP_ASSERTBACK_NOT:
save_mark = md->mark;
if (md->match_function_type == MATCH_CONDASSERT)
{
condassert = TRUE;
md->match_function_type = 0;
}
else condassert = FALSE;
/* Loop for each alternative branch. */
do
{
RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM5);
md->mark = save_mark; /* Always restore the mark setting */
switch(rrc)
{
case MATCH_MATCH: /* A successful match means */
case MATCH_ACCEPT: /* the assertion has failed. */
RRETURN(MATCH_NOMATCH);
case MATCH_NOMATCH: /* Carry on with next branch */
break;
/* See comment in the code for capturing groups above about handling
THEN. */
case MATCH_THEN:
next = ecode + GET(ecode,1);
if (md->start_match_ptr < next &&
(*ecode == OP_ALT || *next == OP_ALT))
{
rrc = MATCH_NOMATCH;
break;
}
/* Otherwise fall through. */
/* COMMIT, SKIP, PRUNE, and an uncaptured THEN cause the whole
assertion to fail to match, without considering any more alternatives.
Failing to match means the assertion is true. This is a consistent
approach, but does not always have the same effect as in Perl. */
case MATCH_COMMIT:
case MATCH_SKIP:
case MATCH_SKIP_ARG:
case MATCH_PRUNE:
do ecode += GET(ecode,1); while (*ecode == OP_ALT);
goto NEG_ASSERT_TRUE; /* Break out of alternation loop */
/* Anything else is an error */
default:
RRETURN(rrc);
}
/* Continue with next branch */
ecode += GET(ecode,1);
}
while (*ecode == OP_ALT);
/* All branches in the assertion failed to match. */
NEG_ASSERT_TRUE:
if (condassert) RRETURN(MATCH_MATCH); /* Condition assertion */
ecode += 1 + LINK_SIZE; /* Continue with current branch */
continue;
/* Move the subject pointer back. This occurs only at the start of
each branch of a lookbehind assertion. If we are too close to the start to
move back, this match function fails. When working with UTF-8 we move
back a number of characters, not bytes. */
case OP_REVERSE:
#ifdef SUPPORT_UTF
if (utf)
{
i = GET(ecode, 1);
while (i-- > 0)
{
eptr--;
if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);
BACKCHAR(eptr);
}
}
else
#endif
/* No UTF-8 support, or not in UTF-8 mode: count is byte count */
{
eptr -= GET(ecode, 1);
if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);
}
/* Save the earliest consulted character, then skip to next op code */
if (eptr < md->start_used_ptr) md->start_used_ptr = eptr;
ecode += 1 + LINK_SIZE;
break;
/* The callout item calls an external function, if one is provided, passing
details of the match so far. This is mainly for debugging, though the
function is able to force a failure. */
case OP_CALLOUT:
if (PUBL(callout) != NULL)
{
PUBL(callout_block) cb;
cb.version = 2; /* Version 1 of the callout block */
cb.callout_number = ecode[1];
cb.offset_vector = md->offset_vector;
#if defined COMPILE_PCRE8
cb.subject = (PCRE_SPTR)md->start_subject;
#elif defined COMPILE_PCRE16
cb.subject = (PCRE_SPTR16)md->start_subject;
#elif defined COMPILE_PCRE32
cb.subject = (PCRE_SPTR32)md->start_subject;
#endif
cb.subject_length = (int)(md->end_subject - md->start_subject);
cb.start_match = (int)(mstart - md->start_subject);
cb.current_position = (int)(eptr - md->start_subject);
cb.pattern_position = GET(ecode, 2);
cb.next_item_length = GET(ecode, 2 + LINK_SIZE);
cb.capture_top = offset_top/2;
cb.capture_last = md->capture_last & CAPLMASK;
/* Internal change requires this for API compatibility. */
if (cb.capture_last == 0) cb.capture_last = -1;
cb.callout_data = md->callout_data;
cb.mark = md->nomatch_mark;
if ((rrc = (*PUBL(callout))(&cb)) > 0) RRETURN(MATCH_NOMATCH);
if (rrc < 0) RRETURN(rrc);
}
ecode += 2 + 2*LINK_SIZE;
break;
/* Recursion either matches the current regex, or some subexpression. The
offset data is the offset to the starting bracket from the start of the
whole pattern. (This is so that it works from duplicated subpatterns.)
The state of the capturing groups is preserved over recursion, and
re-instated afterwards. We don't know how many are started and not yet
finished (offset_top records the completed total) so we just have to save
all the potential data. There may be up to 65535 such values, which is too
large to put on the stack, but using malloc for small numbers seems
expensive. As a compromise, the stack is used when there are no more than
REC_STACK_SAVE_MAX values to store; otherwise malloc is used.
There are also other values that have to be saved. We use a chained
sequence of blocks that actually live on the stack. Thanks to Robin Houston
for the original version of this logic. It has, however, been hacked around
a lot, so he is not to blame for the current way it works. */
case OP_RECURSE:
{
recursion_info *ri;
unsigned int recno;
callpat = md->start_code + GET(ecode, 1);
recno = (callpat == md->start_code)? 0 :
GET2(callpat, 1 + LINK_SIZE);
/* Check for repeating a recursion without advancing the subject pointer.
This should catch convoluted mutual recursions. (Some simple cases are
caught at compile time.) */
for (ri = md->recursive; ri != NULL; ri = ri->prevrec)
if (recno == ri->group_num && eptr == ri->subject_position)
RRETURN(PCRE_ERROR_RECURSELOOP);
/* Add to "recursing stack" */
new_recursive.group_num = recno;
new_recursive.saved_capture_last = md->capture_last;
new_recursive.subject_position = eptr;
new_recursive.prevrec = md->recursive;
md->recursive = &new_recursive;
/* Where to continue from afterwards */
ecode += 1 + LINK_SIZE;
/* Now save the offset data */
new_recursive.saved_max = md->offset_end;
if (new_recursive.saved_max <= REC_STACK_SAVE_MAX)
new_recursive.offset_save = stacksave;
else
{
new_recursive.offset_save =
(int *)(PUBL(malloc))(new_recursive.saved_max * sizeof(int));
if (new_recursive.offset_save == NULL) RRETURN(PCRE_ERROR_NOMEMORY);
}
memcpy(new_recursive.offset_save, md->offset_vector,
new_recursive.saved_max * sizeof(int));
/* OK, now we can do the recursion. After processing each alternative,
restore the offset data and the last captured value. If there were nested
recursions, md->recursive might be changed, so reset it before looping.
*/
DPRINTF(("Recursing into group %d\n", new_recursive.group_num));
cbegroup = (*callpat >= OP_SBRA);
do
{
if (cbegroup) md->match_function_type = MATCH_CBEGROUP;
RMATCH(eptr, callpat + PRIV(OP_lengths)[*callpat], offset_top,
md, eptrb, RM6);
memcpy(md->offset_vector, new_recursive.offset_save,
new_recursive.saved_max * sizeof(int));
md->capture_last = new_recursive.saved_capture_last;
md->recursive = new_recursive.prevrec;
if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT)
{
DPRINTF(("Recursion matched\n"));
if (new_recursive.offset_save != stacksave)
(PUBL(free))(new_recursive.offset_save);
/* Set where we got to in the subject, and reset the start in case
it was changed by \K. This *is* propagated back out of a recursion,
for Perl compatibility. */
eptr = md->end_match_ptr;
mstart = md->start_match_ptr;
goto RECURSION_MATCHED; /* Exit loop; end processing */
}
/* PCRE does not allow THEN, SKIP, PRUNE or COMMIT to escape beyond a
recursion; they cause a NOMATCH for the entire recursion. These codes
are defined in a range that can be tested for. */
if (rrc >= MATCH_BACKTRACK_MIN && rrc <= MATCH_BACKTRACK_MAX)
{
if (new_recursive.offset_save != stacksave)
(PUBL(free))(new_recursive.offset_save);
RRETURN(MATCH_NOMATCH);
}
/* Any return code other than NOMATCH is an error. */
if (rrc != MATCH_NOMATCH)
{
DPRINTF(("Recursion gave error %d\n", rrc));
if (new_recursive.offset_save != stacksave)
(PUBL(free))(new_recursive.offset_save);
RRETURN(rrc);
}
md->recursive = &new_recursive;
callpat += GET(callpat, 1);
}
while (*callpat == OP_ALT);
DPRINTF(("Recursion didn't match\n"));
md->recursive = new_recursive.prevrec;
if (new_recursive.offset_save != stacksave)
(PUBL(free))(new_recursive.offset_save);
RRETURN(MATCH_NOMATCH);
}
RECURSION_MATCHED:
break;
/* An alternation is the end of a branch; scan along to find the end of the
bracketed group and go to there. */
case OP_ALT:
do ecode += GET(ecode,1); while (*ecode == OP_ALT);
break;
/* BRAZERO, BRAMINZERO and SKIPZERO occur just before a bracket group,
indicating that it may occur zero times. It may repeat infinitely, or not
at all - i.e. it could be ()* or ()? or even (){0} in the pattern. Brackets
with fixed upper repeat limits are compiled as a number of copies, with the
optional ones preceded by BRAZERO or BRAMINZERO. */
case OP_BRAZERO:
next = ecode + 1;
RMATCH(eptr, next, offset_top, md, eptrb, RM10);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
do next += GET(next, 1); while (*next == OP_ALT);
ecode = next + 1 + LINK_SIZE;
break;
case OP_BRAMINZERO:
next = ecode + 1;
do next += GET(next, 1); while (*next == OP_ALT);
RMATCH(eptr, next + 1+LINK_SIZE, offset_top, md, eptrb, RM11);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
ecode++;
break;
case OP_SKIPZERO:
next = ecode+1;
do next += GET(next,1); while (*next == OP_ALT);
ecode = next + 1 + LINK_SIZE;
break;
/* BRAPOSZERO occurs before a possessive bracket group. Don't do anything
here; just jump to the group, with allow_zero set TRUE. */
case OP_BRAPOSZERO:
op = *(++ecode);
allow_zero = TRUE;
if (op == OP_CBRAPOS || op == OP_SCBRAPOS) goto POSSESSIVE_CAPTURE;
goto POSSESSIVE_NON_CAPTURE;
/* End of a group, repeated or non-repeating. */
case OP_KET:
case OP_KETRMIN:
case OP_KETRMAX:
case OP_KETRPOS:
prev = ecode - GET(ecode, 1);
/* If this was a group that remembered the subject start, in order to break
infinite repeats of empty string matches, retrieve the subject start from
the chain. Otherwise, set it NULL. */
if (*prev >= OP_SBRA || *prev == OP_ONCE)
{
saved_eptr = eptrb->epb_saved_eptr; /* Value at start of group */
eptrb = eptrb->epb_prev; /* Backup to previous group */
}
else saved_eptr = NULL;
/* If we are at the end of an assertion group or a non-capturing atomic
group, stop matching and return MATCH_MATCH, but record the current high
water mark for use by positive assertions. We also need to record the match
start in case it was changed by \K. */
if ((*prev >= OP_ASSERT && *prev <= OP_ASSERTBACK_NOT) ||
*prev == OP_ONCE_NC)
{
md->end_match_ptr = eptr; /* For ONCE_NC */
md->end_offset_top = offset_top;
md->start_match_ptr = mstart;
RRETURN(MATCH_MATCH); /* Sets md->mark */
}
/* For capturing groups we have to check the group number back at the start
and if necessary complete handling an extraction by setting the offsets and
bumping the high water mark. Whole-pattern recursion is coded as a recurse
into group 0, so it won't be picked up here. Instead, we catch it when the
OP_END is reached. Other recursion is handled here. We just have to record
the current subject position and start match pointer and give a MATCH
return. */
if (*prev == OP_CBRA || *prev == OP_SCBRA ||
*prev == OP_CBRAPOS || *prev == OP_SCBRAPOS)
{
number = GET2(prev, 1+LINK_SIZE);
offset = number << 1;
#ifdef PCRE_DEBUG
printf("end bracket %d", number);
printf("\n");
#endif
/* Handle a recursively called group. */
if (md->recursive != NULL && md->recursive->group_num == number)
{
md->end_match_ptr = eptr;
md->start_match_ptr = mstart;
RRETURN(MATCH_MATCH);
}
/* Deal with capturing */
md->capture_last = (md->capture_last & OVFLMASK) | number;
if (offset >= md->offset_max) md->capture_last |= OVFLBIT; else
{
/* If offset is greater than offset_top, it means that we are
"skipping" a capturing group, and that group's offsets must be marked
unset. In earlier versions of PCRE, all the offsets were unset at the
start of matching, but this doesn't work because atomic groups and
assertions can cause a value to be set that should later be unset.
Example: matching /(?>(a))b|(a)c/ against "ac". This sets group 1 as
part of the atomic group, but this is not on the final matching path,
so must be unset when 2 is set. (If there is no group 2, there is no
problem, because offset_top will then be 2, indicating no capture.) */
if (offset > offset_top)
{
register int *iptr = md->offset_vector + offset_top;
register int *iend = md->offset_vector + offset;
while (iptr < iend) *iptr++ = -1;
}
/* Now make the extraction */
md->offset_vector[offset] =
md->offset_vector[md->offset_end - number];
md->offset_vector[offset+1] = (int)(eptr - md->start_subject);
if (offset_top <= offset) offset_top = offset + 2;
}
}
/* OP_KETRPOS is a possessive repeating ket. Remember the current position,
and return the MATCH_KETRPOS. This makes it possible to do the repeats one
at a time from the outer level, thus saving stack. This must precede the
empty string test - in this case that test is done at the outer level. */
if (*ecode == OP_KETRPOS)
{
md->start_match_ptr = mstart; /* In case \K reset it */
md->end_match_ptr = eptr;
md->end_offset_top = offset_top;
RRETURN(MATCH_KETRPOS);
}
/* For an ordinary non-repeating ket, just continue at this level. This
also happens for a repeating ket if no characters were matched in the
group. This is the forcible breaking of infinite loops as implemented in
Perl 5.005. For a non-repeating atomic group that includes captures,
establish a backup point by processing the rest of the pattern at a lower
level. If this results in a NOMATCH return, pass MATCH_ONCE back to the
original OP_ONCE level, thereby bypassing intermediate backup points, but
resetting any captures that happened along the way. */
if (*ecode == OP_KET || eptr == saved_eptr)
{
if (*prev == OP_ONCE)
{
RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM12);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
md->once_target = prev; /* Level at which to change to MATCH_NOMATCH */
RRETURN(MATCH_ONCE);
}
ecode += 1 + LINK_SIZE; /* Carry on at this level */
break;
}
/* The normal repeating kets try the rest of the pattern or restart from
the preceding bracket, in the appropriate order. In the second case, we can
use tail recursion to avoid using another stack frame, unless we have an
an atomic group or an unlimited repeat of a group that can match an empty
string. */
if (*ecode == OP_KETRMIN)
{
RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM7);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (*prev == OP_ONCE)
{
RMATCH(eptr, prev, offset_top, md, eptrb, RM8);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
md->once_target = prev; /* Level at which to change to MATCH_NOMATCH */
RRETURN(MATCH_ONCE);
}
if (*prev >= OP_SBRA) /* Could match an empty string */
{
RMATCH(eptr, prev, offset_top, md, eptrb, RM50);
RRETURN(rrc);
}
ecode = prev;
goto TAIL_RECURSE;
}
else /* OP_KETRMAX */
{
RMATCH(eptr, prev, offset_top, md, eptrb, RM13);
if (rrc == MATCH_ONCE && md->once_target == prev) rrc = MATCH_NOMATCH;
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (*prev == OP_ONCE)
{
RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM9);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
md->once_target = prev;
RRETURN(MATCH_ONCE);
}
ecode += 1 + LINK_SIZE;
goto TAIL_RECURSE;
}
/* Control never gets here */
/* Not multiline mode: start of subject assertion, unless notbol. */
case OP_CIRC:
if (md->notbol && eptr == md->start_subject) RRETURN(MATCH_NOMATCH);
/* Start of subject assertion */
case OP_SOD:
if (eptr != md->start_subject) RRETURN(MATCH_NOMATCH);
ecode++;
break;
/* Multiline mode: start of subject unless notbol, or after any newline. */
case OP_CIRCM:
if (md->notbol && eptr == md->start_subject) RRETURN(MATCH_NOMATCH);
if (eptr != md->start_subject &&
(eptr == md->end_subject || !WAS_NEWLINE(eptr)))
RRETURN(MATCH_NOMATCH);
ecode++;
break;
/* Start of match assertion */
case OP_SOM:
if (eptr != md->start_subject + md->start_offset) RRETURN(MATCH_NOMATCH);
ecode++;
break;
/* Reset the start of match point */
case OP_SET_SOM:
mstart = eptr;
ecode++;
break;
/* Multiline mode: assert before any newline, or before end of subject
unless noteol is set. */
case OP_DOLLM:
if (eptr < md->end_subject)
{
if (!IS_NEWLINE(eptr))
{
if (md->partial != 0 &&
eptr + 1 >= md->end_subject &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
UCHAR21TEST(eptr) == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
RRETURN(MATCH_NOMATCH);
}
}
else
{
if (md->noteol) RRETURN(MATCH_NOMATCH);
SCHECK_PARTIAL();
}
ecode++;
break;
/* Not multiline mode: assert before a terminating newline or before end of
subject unless noteol is set. */
case OP_DOLL:
if (md->noteol) RRETURN(MATCH_NOMATCH);
if (!md->endonly) goto ASSERT_NL_OR_EOS;
/* ... else fall through for endonly */
/* End of subject assertion (\z) */
case OP_EOD:
if (eptr < md->end_subject) RRETURN(MATCH_NOMATCH);
SCHECK_PARTIAL();
ecode++;
break;
/* End of subject or ending \n assertion (\Z) */
case OP_EODN:
ASSERT_NL_OR_EOS:
if (eptr < md->end_subject &&
(!IS_NEWLINE(eptr) || eptr != md->end_subject - md->nllen))
{
if (md->partial != 0 &&
eptr + 1 >= md->end_subject &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
UCHAR21TEST(eptr) == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
RRETURN(MATCH_NOMATCH);
}
/* Either at end of string or \n before end. */
SCHECK_PARTIAL();
ecode++;
break;
/* Word boundary assertions */
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
{
/* Find out if the previous and current characters are "word" characters.
It takes a bit more work in UTF-8 mode. Characters > 255 are assumed to
be "non-word" characters. Remember the earliest consulted character for
partial matching. */
#ifdef SUPPORT_UTF
if (utf)
{
/* Get status of previous character */
if (eptr == md->start_subject) prev_is_word = FALSE; else
{
PCRE_PUCHAR lastptr = eptr - 1;
BACKCHAR(lastptr);
if (lastptr < md->start_used_ptr) md->start_used_ptr = lastptr;
GETCHAR(c, lastptr);
#ifdef SUPPORT_UCP
if (md->use_ucp)
{
if (c == '_') prev_is_word = TRUE; else
{
int cat = UCD_CATEGORY(c);
prev_is_word = (cat == ucp_L || cat == ucp_N);
}
}
else
#endif
prev_is_word = c < 256 && (md->ctypes[c] & ctype_word) != 0;
}
/* Get status of next character */
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
cur_is_word = FALSE;
}
else
{
GETCHAR(c, eptr);
#ifdef SUPPORT_UCP
if (md->use_ucp)
{
if (c == '_') cur_is_word = TRUE; else
{
int cat = UCD_CATEGORY(c);
cur_is_word = (cat == ucp_L || cat == ucp_N);
}
}
else
#endif
cur_is_word = c < 256 && (md->ctypes[c] & ctype_word) != 0;
}
}
else
#endif
/* Not in UTF-8 mode, but we may still have PCRE_UCP set, and for
consistency with the behaviour of \w we do use it in this case. */
{
/* Get status of previous character */
if (eptr == md->start_subject) prev_is_word = FALSE; else
{
if (eptr <= md->start_used_ptr) md->start_used_ptr = eptr - 1;
#ifdef SUPPORT_UCP
if (md->use_ucp)
{
c = eptr[-1];
if (c == '_') prev_is_word = TRUE; else
{
int cat = UCD_CATEGORY(c);
prev_is_word = (cat == ucp_L || cat == ucp_N);
}
}
else
#endif
prev_is_word = MAX_255(eptr[-1])
&& ((md->ctypes[eptr[-1]] & ctype_word) != 0);
}
/* Get status of next character */
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
cur_is_word = FALSE;
}
else
#ifdef SUPPORT_UCP
if (md->use_ucp)
{
c = *eptr;
if (c == '_') cur_is_word = TRUE; else
{
int cat = UCD_CATEGORY(c);
cur_is_word = (cat == ucp_L || cat == ucp_N);
}
}
else
#endif
cur_is_word = MAX_255(*eptr)
&& ((md->ctypes[*eptr] & ctype_word) != 0);
}
/* Now see if the situation is what we want */
if ((*ecode++ == OP_WORD_BOUNDARY)?
cur_is_word == prev_is_word : cur_is_word != prev_is_word)
RRETURN(MATCH_NOMATCH);
}
break;
/* Match any single character type except newline; have to take care with
CRLF newlines and partial matching. */
case OP_ANY:
if (IS_NEWLINE(eptr)) RRETURN(MATCH_NOMATCH);
if (md->partial != 0 &&
eptr == md->end_subject - 1 &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
UCHAR21TEST(eptr) == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
/* Fall through */
/* Match any single character whatsoever. */
case OP_ALLANY:
if (eptr >= md->end_subject) /* DO NOT merge the eptr++ here; it must */
{ /* not be updated before SCHECK_PARTIAL. */
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
eptr++;
#ifdef SUPPORT_UTF
if (utf) ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
#endif
ecode++;
break;
/* Match a single byte, even in UTF-8 mode. This opcode really does match
any byte, even newline, independent of the setting of PCRE_DOTALL. */
case OP_ANYBYTE:
if (eptr >= md->end_subject) /* DO NOT merge the eptr++ here; it must */
{ /* not be updated before SCHECK_PARTIAL. */
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
eptr++;
ecode++;
break;
case OP_NOT_DIGIT:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (
#if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
c < 256 &&
#endif
(md->ctypes[c] & ctype_digit) != 0
)
RRETURN(MATCH_NOMATCH);
ecode++;
break;
case OP_DIGIT:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (
#if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
c > 255 ||
#endif
(md->ctypes[c] & ctype_digit) == 0
)
RRETURN(MATCH_NOMATCH);
ecode++;
break;
case OP_NOT_WHITESPACE:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (
#if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
c < 256 &&
#endif
(md->ctypes[c] & ctype_space) != 0
)
RRETURN(MATCH_NOMATCH);
ecode++;
break;
case OP_WHITESPACE:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (
#if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
c > 255 ||
#endif
(md->ctypes[c] & ctype_space) == 0
)
RRETURN(MATCH_NOMATCH);
ecode++;
break;
case OP_NOT_WORDCHAR:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (
#if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
c < 256 &&
#endif
(md->ctypes[c] & ctype_word) != 0
)
RRETURN(MATCH_NOMATCH);
ecode++;
break;
case OP_WORDCHAR:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (
#if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
c > 255 ||
#endif
(md->ctypes[c] & ctype_word) == 0
)
RRETURN(MATCH_NOMATCH);
ecode++;
break;
case OP_ANYNL:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
switch(c)
{
default: RRETURN(MATCH_NOMATCH);
case CHAR_CR:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
}
else if (UCHAR21TEST(eptr) == CHAR_LF) eptr++;
break;
case CHAR_LF:
break;
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#ifndef EBCDIC
case 0x2028:
case 0x2029:
#endif /* Not EBCDIC */
if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
break;
}
ecode++;
break;
case OP_NOT_HSPACE:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
switch(c)
{
HSPACE_CASES: RRETURN(MATCH_NOMATCH); /* Byte and multibyte cases */
default: break;
}
ecode++;
break;
case OP_HSPACE:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
switch(c)
{
HSPACE_CASES: break; /* Byte and multibyte cases */
default: RRETURN(MATCH_NOMATCH);
}
ecode++;
break;
case OP_NOT_VSPACE:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
switch(c)
{
VSPACE_CASES: RRETURN(MATCH_NOMATCH);
default: break;
}
ecode++;
break;
case OP_VSPACE:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
switch(c)
{
VSPACE_CASES: break;
default: RRETURN(MATCH_NOMATCH);
}
ecode++;
break;
#ifdef SUPPORT_UCP
/* Check the next character by Unicode property. We will get here only
if the support is in the binary; otherwise a compile-time error occurs. */
case OP_PROP:
case OP_NOTPROP:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
{
const pcre_uint32 *cp;
const ucd_record *prop = GET_UCD(c);
switch(ecode[1])
{
case PT_ANY:
if (op == OP_NOTPROP) RRETURN(MATCH_NOMATCH);
break;
case PT_LAMP:
if ((prop->chartype == ucp_Lu ||
prop->chartype == ucp_Ll ||
prop->chartype == ucp_Lt) == (op == OP_NOTPROP))
RRETURN(MATCH_NOMATCH);
break;
case PT_GC:
if ((ecode[2] != PRIV(ucp_gentype)[prop->chartype]) == (op == OP_PROP))
RRETURN(MATCH_NOMATCH);
break;
case PT_PC:
if ((ecode[2] != prop->chartype) == (op == OP_PROP))
RRETURN(MATCH_NOMATCH);
break;
case PT_SC:
if ((ecode[2] != prop->script) == (op == OP_PROP))
RRETURN(MATCH_NOMATCH);
break;
/* These are specials */
case PT_ALNUM:
if ((PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N) == (op == OP_NOTPROP))
RRETURN(MATCH_NOMATCH);
break;
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
if (op == OP_NOTPROP) RRETURN(MATCH_NOMATCH);
break;
default:
if ((PRIV(ucp_gentype)[prop->chartype] == ucp_Z) ==
(op == OP_NOTPROP)) RRETURN(MATCH_NOMATCH);
break;
}
break;
case PT_WORD:
if ((PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N ||
c == CHAR_UNDERSCORE) == (op == OP_NOTPROP))
RRETURN(MATCH_NOMATCH);
break;
case PT_CLIST:
cp = PRIV(ucd_caseless_sets) + ecode[2];
for (;;)
{
if (c < *cp)
{ if (op == OP_PROP) { RRETURN(MATCH_NOMATCH); } else break; }
if (c == *cp++)
{ if (op == OP_PROP) break; else { RRETURN(MATCH_NOMATCH); } }
}
break;
case PT_UCNC:
if ((c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
c >= 0xe000) == (op == OP_NOTPROP))
RRETURN(MATCH_NOMATCH);
break;
/* This should never occur */
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
ecode += 3;
}
break;
/* Match an extended Unicode sequence. We will get here only if the support
is in the binary; otherwise a compile-time error occurs. */
case OP_EXTUNI:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
else
{
int lgb, rgb;
GETCHARINCTEST(c, eptr);
lgb = UCD_GRAPHBREAK(c);
while (eptr < md->end_subject)
{
int len = 1;
if (!utf) c = *eptr; else { GETCHARLEN(c, eptr, len); }
rgb = UCD_GRAPHBREAK(c);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
lgb = rgb;
eptr += len;
}
}
CHECK_PARTIAL();
ecode++;
break;
#endif /* SUPPORT_UCP */
/* Match a back reference, possibly repeatedly. Look past the end of the
item to see if there is repeat information following. The code is similar
to that for character classes, but repeated for efficiency. Then obey
similar code to character type repeats - written out again for speed.
However, if the referenced string is the empty string, always treat
it as matched, any number of times (otherwise there could be infinite
loops). If the reference is unset, there are two possibilities:
(a) In the default, Perl-compatible state, set the length negative;
this ensures that every attempt at a match fails. We can't just fail
here, because of the possibility of quantifiers with zero minima.
(b) If the JavaScript compatibility flag is set, set the length to zero
so that the back reference matches an empty string.
Otherwise, set the length to the length of what was matched by the
referenced subpattern.
The OP_REF and OP_REFI opcodes are used for a reference to a numbered group
or to a non-duplicated named group. For a duplicated named group, OP_DNREF
and OP_DNREFI are used. In this case we must scan the list of groups to
which the name refers, and use the first one that is set. */
case OP_DNREF:
case OP_DNREFI:
caseless = op == OP_DNREFI;
{
int count = GET2(ecode, 1+IMM2_SIZE);
pcre_uchar *slot = md->name_table + GET2(ecode, 1) * md->name_entry_size;
ecode += 1 + 2*IMM2_SIZE;
/* Setting the default length first and initializing 'offset' avoids
compiler warnings in the REF_REPEAT code. */
length = (md->jscript_compat)? 0 : -1;
offset = 0;
while (count-- > 0)
{
offset = GET2(slot, 0) << 1;
if (offset < offset_top && md->offset_vector[offset] >= 0)
{
length = md->offset_vector[offset+1] - md->offset_vector[offset];
break;
}
slot += md->name_entry_size;
}
}
goto REF_REPEAT;
case OP_REF:
case OP_REFI:
caseless = op == OP_REFI;
offset = GET2(ecode, 1) << 1; /* Doubled ref number */
ecode += 1 + IMM2_SIZE;
if (offset >= offset_top || md->offset_vector[offset] < 0)
length = (md->jscript_compat)? 0 : -1;
else
length = md->offset_vector[offset+1] - md->offset_vector[offset];
/* Set up for repetition, or handle the non-repeated case */
REF_REPEAT:
switch (*ecode)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRQUERY:
case OP_CRMINQUERY:
c = *ecode++ - OP_CRSTAR;
minimize = (c & 1) != 0;
min = rep_min[c]; /* Pick up values from tables; */
max = rep_max[c]; /* zero for max => infinity */
if (max == 0) max = INT_MAX;
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
minimize = (*ecode == OP_CRMINRANGE);
min = GET2(ecode, 1);
max = GET2(ecode, 1 + IMM2_SIZE);
if (max == 0) max = INT_MAX;
ecode += 1 + 2 * IMM2_SIZE;
break;
default: /* No repeat follows */
if ((length = match_ref(offset, eptr, length, md, caseless)) < 0)
{
if (length == -2) eptr = md->end_subject; /* Partial match */
CHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
eptr += length;
continue; /* With the main loop */
}
/* Handle repeated back references. If the length of the reference is
zero, just continue with the main loop. If the length is negative, it
means the reference is unset in non-Java-compatible mode. If the minimum is
zero, we can continue at the same level without recursion. For any other
minimum, carrying on will result in NOMATCH. */
if (length == 0) continue;
if (length < 0 && min == 0) continue;
/* First, ensure the minimum number of matches are present. We get back
the length of the reference string explicitly rather than passing the
address of eptr, so that eptr can be a register variable. */
for (i = 1; i <= min; i++)
{
int slength;
if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
{
if (slength == -2) eptr = md->end_subject; /* Partial match */
CHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
eptr += slength;
}
/* If min = max, continue at the same level without recursion.
They are not both allowed to be zero. */
if (min == max) continue;
/* If minimizing, keep trying and advancing the pointer */
if (minimize)
{
for (fi = min;; fi++)
{
int slength;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM14);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
{
if (slength == -2) eptr = md->end_subject; /* Partial match */
CHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
eptr += slength;
}
/* Control never gets here */
}
/* If maximizing, find the longest string and work backwards */
else
{
pp = eptr;
for (i = min; i < max; i++)
{
int slength;
if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
{
/* Can't use CHECK_PARTIAL because we don't want to update eptr in
the soft partial matching case. */
if (slength == -2 && md->partial != 0 &&
md->end_subject > md->start_used_ptr)
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
break;
}
eptr += slength;
}
while (eptr >= pp)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM15);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr -= length;
}
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
/* Match a bit-mapped character class, possibly repeatedly. This op code is
used when all the characters in the class have values in the range 0-255,
and either the matching is caseful, or the characters are in the range
0-127 when UTF-8 processing is enabled. The only difference between
OP_CLASS and OP_NCLASS occurs when a data character outside the range is
encountered.
First, look past the end of the item to see if there is repeat information
following. Then obey similar code to character type repeats - written out
again for speed. */
case OP_NCLASS:
case OP_CLASS:
{
/* The data variable is saved across frames, so the byte map needs to
be stored there. */
#define BYTE_MAP ((pcre_uint8 *)data)
data = ecode + 1; /* Save for matching */
ecode += 1 + (32 / sizeof(pcre_uchar)); /* Advance past the item */
switch (*ecode)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRPOSSTAR:
case OP_CRPOSPLUS:
case OP_CRPOSQUERY:
c = *ecode++ - OP_CRSTAR;
if (c < OP_CRPOSSTAR - OP_CRSTAR) minimize = (c & 1) != 0;
else possessive = TRUE;
min = rep_min[c]; /* Pick up values from tables; */
max = rep_max[c]; /* zero for max => infinity */
if (max == 0) max = INT_MAX;
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSRANGE:
minimize = (*ecode == OP_CRMINRANGE);
possessive = (*ecode == OP_CRPOSRANGE);
min = GET2(ecode, 1);
max = GET2(ecode, 1 + IMM2_SIZE);
if (max == 0) max = INT_MAX;
ecode += 1 + 2 * IMM2_SIZE;
break;
default: /* No repeat follows */
min = max = 1;
break;
}
/* First, ensure the minimum number of matches are present. */
#ifdef SUPPORT_UTF
if (utf)
{
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(c, eptr);
if (c > 255)
{
if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
}
else
if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
}
}
else
#endif
/* Not UTF mode */
{
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
c = *eptr++;
#ifndef COMPILE_PCRE8
if (c > 255)
{
if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
}
else
#endif
if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
}
}
/* If max == min we can continue with the main loop without the
need to recurse. */
if (min == max) continue;
/* If minimizing, keep testing the rest of the expression and advancing
the pointer while it matches the class. */
if (minimize)
{
#ifdef SUPPORT_UTF
if (utf)
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM16);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(c, eptr);
if (c > 255)
{
if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
}
else
if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
}
}
else
#endif
/* Not UTF mode */
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM17);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
c = *eptr++;
#ifndef COMPILE_PCRE8
if (c > 255)
{
if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
}
else
#endif
if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
}
}
/* Control never gets here */
}
/* If maximizing, find the longest possible run, then work backwards. */
else
{
pp = eptr;
#ifdef SUPPORT_UTF
if (utf)
{
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
if (c > 255)
{
if (op == OP_CLASS) break;
}
else
if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) break;
eptr += len;
}
if (possessive) continue; /* No backtracking */
for (;;)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM18);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (eptr-- <= pp) break; /* Stop if tried at original pos */
BACKCHAR(eptr);
}
}
else
#endif
/* Not UTF mode */
{
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
c = *eptr;
#ifndef COMPILE_PCRE8
if (c > 255)
{
if (op == OP_CLASS) break;
}
else
#endif
if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) break;
eptr++;
}
if (possessive) continue; /* No backtracking */
while (eptr >= pp)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM19);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr--;
}
}
RRETURN(MATCH_NOMATCH);
}
#undef BYTE_MAP
}
/* Control never gets here */
/* Match an extended character class. In the 8-bit library, this opcode is
encountered only when UTF-8 mode mode is supported. In the 16-bit and
32-bit libraries, codepoints greater than 255 may be encountered even when
UTF is not supported. */
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
{
data = ecode + 1 + LINK_SIZE; /* Save for matching */
ecode += GET(ecode, 1); /* Advance past the item */
switch (*ecode)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRPOSSTAR:
case OP_CRPOSPLUS:
case OP_CRPOSQUERY:
c = *ecode++ - OP_CRSTAR;
if (c < OP_CRPOSSTAR - OP_CRSTAR) minimize = (c & 1) != 0;
else possessive = TRUE;
min = rep_min[c]; /* Pick up values from tables; */
max = rep_max[c]; /* zero for max => infinity */
if (max == 0) max = INT_MAX;
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSRANGE:
minimize = (*ecode == OP_CRMINRANGE);
possessive = (*ecode == OP_CRPOSRANGE);
min = GET2(ecode, 1);
max = GET2(ecode, 1 + IMM2_SIZE);
if (max == 0) max = INT_MAX;
ecode += 1 + 2 * IMM2_SIZE;
break;
default: /* No repeat follows */
min = max = 1;
break;
}
/* First, ensure the minimum number of matches are present. */
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (!PRIV(xclass)(c, data, utf)) RRETURN(MATCH_NOMATCH);
}
/* If max == min we can continue with the main loop without the
need to recurse. */
if (min == max) continue;
/* If minimizing, keep testing the rest of the expression and advancing
the pointer while it matches the class. */
if (minimize)
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM20);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (!PRIV(xclass)(c, data, utf)) RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
}
/* If maximizing, find the longest possible run, then work backwards. */
else
{
pp = eptr;
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
#ifdef SUPPORT_UTF
GETCHARLENTEST(c, eptr, len);
#else
c = *eptr;
#endif
if (!PRIV(xclass)(c, data, utf)) break;
eptr += len;
}
if (possessive) continue; /* No backtracking */
for(;;)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM21);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (eptr-- <= pp) break; /* Stop if tried at original pos */
#ifdef SUPPORT_UTF
if (utf) BACKCHAR(eptr);
#endif
}
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
}
#endif /* End of XCLASS */
/* Match a single character, casefully */
case OP_CHAR:
#ifdef SUPPORT_UTF
if (utf)
{
length = 1;
ecode++;
GETCHARLEN(fc, ecode, length);
if (length > md->end_subject - eptr)
{
CHECK_PARTIAL(); /* Not SCHECK_PARTIAL() */
RRETURN(MATCH_NOMATCH);
}
while (length-- > 0) if (*ecode++ != UCHAR21INC(eptr)) RRETURN(MATCH_NOMATCH);
}
else
#endif
/* Not UTF mode */
{
if (md->end_subject - eptr < 1)
{
SCHECK_PARTIAL(); /* This one can use SCHECK_PARTIAL() */
RRETURN(MATCH_NOMATCH);
}
if (ecode[1] != *eptr++) RRETURN(MATCH_NOMATCH);
ecode += 2;
}
break;
/* Match a single character, caselessly. If we are at the end of the
subject, give up immediately. */
case OP_CHARI:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
#ifdef SUPPORT_UTF
if (utf)
{
length = 1;
ecode++;
GETCHARLEN(fc, ecode, length);
/* If the pattern character's value is < 128, we have only one byte, and
we know that its other case must also be one byte long, so we can use the
fast lookup table. We know that there is at least one byte left in the
subject. */
if (fc < 128)
{
pcre_uint32 cc = UCHAR21(eptr);
if (md->lcc[fc] != TABLE_GET(cc, md->lcc, cc)) RRETURN(MATCH_NOMATCH);
ecode++;
eptr++;
}
/* Otherwise we must pick up the subject character. Note that we cannot
use the value of "length" to check for sufficient bytes left, because the
other case of the character may have more or fewer bytes. */
else
{
pcre_uint32 dc;
GETCHARINC(dc, eptr);
ecode += length;
/* If we have Unicode property support, we can use it to test the other
case of the character, if there is one. */
if (fc != dc)
{
#ifdef SUPPORT_UCP
if (dc != UCD_OTHERCASE(fc))
#endif
RRETURN(MATCH_NOMATCH);
}
}
}
else
#endif /* SUPPORT_UTF */
/* Not UTF mode */
{
if (TABLE_GET(ecode[1], md->lcc, ecode[1])
!= TABLE_GET(*eptr, md->lcc, *eptr)) RRETURN(MATCH_NOMATCH);
eptr++;
ecode += 2;
}
break;
/* Match a single character repeatedly. */
case OP_EXACT:
case OP_EXACTI:
min = max = GET2(ecode, 1);
ecode += 1 + IMM2_SIZE;
goto REPEATCHAR;
case OP_POSUPTO:
case OP_POSUPTOI:
possessive = TRUE;
/* Fall through */
case OP_UPTO:
case OP_UPTOI:
case OP_MINUPTO:
case OP_MINUPTOI:
min = 0;
max = GET2(ecode, 1);
minimize = *ecode == OP_MINUPTO || *ecode == OP_MINUPTOI;
ecode += 1 + IMM2_SIZE;
goto REPEATCHAR;
case OP_POSSTAR:
case OP_POSSTARI:
possessive = TRUE;
min = 0;
max = INT_MAX;
ecode++;
goto REPEATCHAR;
case OP_POSPLUS:
case OP_POSPLUSI:
possessive = TRUE;
min = 1;
max = INT_MAX;
ecode++;
goto REPEATCHAR;
case OP_POSQUERY:
case OP_POSQUERYI:
possessive = TRUE;
min = 0;
max = 1;
ecode++;
goto REPEATCHAR;
case OP_STAR:
case OP_STARI:
case OP_MINSTAR:
case OP_MINSTARI:
case OP_PLUS:
case OP_PLUSI:
case OP_MINPLUS:
case OP_MINPLUSI:
case OP_QUERY:
case OP_QUERYI:
case OP_MINQUERY:
case OP_MINQUERYI:
c = *ecode++ - ((op < OP_STARI)? OP_STAR : OP_STARI);
minimize = (c & 1) != 0;
min = rep_min[c]; /* Pick up values from tables; */
max = rep_max[c]; /* zero for max => infinity */
if (max == 0) max = INT_MAX;
/* Common code for all repeated single-character matches. We first check
for the minimum number of characters. If the minimum equals the maximum, we
are done. Otherwise, if minimizing, check the rest of the pattern for a
match; if there isn't one, advance up to the maximum, one character at a
time.
If maximizing, advance up to the maximum number of matching characters,
until eptr is past the end of the maximum run. If possessive, we are
then done (no backing up). Otherwise, match at this position; anything
other than no match is immediately returned. For nomatch, back up one
character, unless we are matching \R and the last thing matched was
\r\n, in which case, back up two bytes. When we reach the first optional
character position, we can save stack by doing a tail recurse.
The various UTF/non-UTF and caseful/caseless cases are handled separately,
for speed. */
REPEATCHAR:
#ifdef SUPPORT_UTF
if (utf)
{
length = 1;
charptr = ecode;
GETCHARLEN(fc, ecode, length);
ecode += length;
/* Handle multibyte character matching specially here. There is
support for caseless matching if UCP support is present. */
if (length > 1)
{
#ifdef SUPPORT_UCP
pcre_uint32 othercase;
if (op >= OP_STARI && /* Caseless */
(othercase = UCD_OTHERCASE(fc)) != fc)
oclength = PRIV(ord2utf)(othercase, occhars);
else oclength = 0;
#endif /* SUPPORT_UCP */
for (i = 1; i <= min; i++)
{
if (eptr <= md->end_subject - length &&
memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
#ifdef SUPPORT_UCP
else if (oclength > 0 &&
eptr <= md->end_subject - oclength &&
memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
#endif /* SUPPORT_UCP */
else
{
CHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
}
if (min == max) continue;
if (minimize)
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM22);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr <= md->end_subject - length &&
memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
#ifdef SUPPORT_UCP
else if (oclength > 0 &&
eptr <= md->end_subject - oclength &&
memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
#endif /* SUPPORT_UCP */
else
{
CHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
}
/* Control never gets here */
}
else /* Maximize */
{
pp = eptr;
for (i = min; i < max; i++)
{
if (eptr <= md->end_subject - length &&
memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
#ifdef SUPPORT_UCP
else if (oclength > 0 &&
eptr <= md->end_subject - oclength &&
memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
#endif /* SUPPORT_UCP */
else
{
CHECK_PARTIAL();
break;
}
}
if (possessive) continue; /* No backtracking */
for(;;)
{
if (eptr <= pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM23);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
#ifdef SUPPORT_UCP
eptr--;
BACKCHAR(eptr);
#else /* without SUPPORT_UCP */
eptr -= length;
#endif /* SUPPORT_UCP */
}
}
/* Control never gets here */
}
/* If the length of a UTF-8 character is 1, we fall through here, and
obey the code as for non-UTF-8 characters below, though in this case the
value of fc will always be < 128. */
}
else
#endif /* SUPPORT_UTF */
/* When not in UTF-8 mode, load a single-byte character. */
fc = *ecode++;
/* The value of fc at this point is always one character, though we may
or may not be in UTF mode. The code is duplicated for the caseless and
caseful cases, for speed, since matching characters is likely to be quite
common. First, ensure the minimum number of matches are present. If min =
max, continue at the same level without recursing. Otherwise, if
minimizing, keep trying the rest of the expression and advancing one
matching character if failing, up to the maximum. Alternatively, if
maximizing, find the maximum number of characters and work backwards. */
DPRINTF(("matching %c{%d,%d} against subject %.*s\n", fc, min, max,
max, (char *)eptr));
if (op >= OP_STARI) /* Caseless */
{
#ifdef COMPILE_PCRE8
/* fc must be < 128 if UTF is enabled. */
foc = md->fcc[fc];
#else
#ifdef SUPPORT_UTF
#ifdef SUPPORT_UCP
if (utf && fc > 127)
foc = UCD_OTHERCASE(fc);
#else
if (utf && fc > 127)
foc = fc;
#endif /* SUPPORT_UCP */
else
#endif /* SUPPORT_UTF */
foc = TABLE_GET(fc, md->fcc, fc);
#endif /* COMPILE_PCRE8 */
for (i = 1; i <= min; i++)
{
pcre_uint32 cc; /* Faster than pcre_uchar */
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
cc = UCHAR21TEST(eptr);
if (fc != cc && foc != cc) RRETURN(MATCH_NOMATCH);
eptr++;
}
if (min == max) continue;
if (minimize)
{
for (fi = min;; fi++)
{
pcre_uint32 cc; /* Faster than pcre_uchar */
RMATCH(eptr, ecode, offset_top, md, eptrb, RM24);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
cc = UCHAR21TEST(eptr);
if (fc != cc && foc != cc) RRETURN(MATCH_NOMATCH);
eptr++;
}
/* Control never gets here */
}
else /* Maximize */
{
pp = eptr;
for (i = min; i < max; i++)
{
pcre_uint32 cc; /* Faster than pcre_uchar */
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
cc = UCHAR21TEST(eptr);
if (fc != cc && foc != cc) break;
eptr++;
}
if (possessive) continue; /* No backtracking */
for (;;)
{
if (eptr == pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM25);
eptr--;
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
}
/* Control never gets here */
}
}
/* Caseful comparisons (includes all multi-byte characters) */
else
{
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (fc != UCHAR21INCTEST(eptr)) RRETURN(MATCH_NOMATCH);
}
if (min == max) continue;
if (minimize)
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM26);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (fc != UCHAR21INCTEST(eptr)) RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
}
else /* Maximize */
{
pp = eptr;
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (fc != UCHAR21TEST(eptr)) break;
eptr++;
}
if (possessive) continue; /* No backtracking */
for (;;)
{
if (eptr == pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM27);
eptr--;
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
}
/* Control never gets here */
}
}
/* Control never gets here */
/* Match a negated single one-byte character. The character we are
checking can be multibyte. */
case OP_NOT:
case OP_NOTI:
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
#ifdef SUPPORT_UTF
if (utf)
{
register pcre_uint32 ch, och;
ecode++;
GETCHARINC(ch, ecode);
GETCHARINC(c, eptr);
if (op == OP_NOT)
{
if (ch == c) RRETURN(MATCH_NOMATCH);
}
else
{
#ifdef SUPPORT_UCP
if (ch > 127)
och = UCD_OTHERCASE(ch);
#else
if (ch > 127)
och = ch;
#endif /* SUPPORT_UCP */
else
och = TABLE_GET(ch, md->fcc, ch);
if (ch == c || och == c) RRETURN(MATCH_NOMATCH);
}
}
else
#endif
{
register pcre_uint32 ch = ecode[1];
c = *eptr++;
if (ch == c || (op == OP_NOTI && TABLE_GET(ch, md->fcc, ch) == c))
RRETURN(MATCH_NOMATCH);
ecode += 2;
}
break;
/* Match a negated single one-byte character repeatedly. This is almost a
repeat of the code for a repeated single character, but I haven't found a
nice way of commoning these up that doesn't require a test of the
positive/negative option for each character match. Maybe that wouldn't add
very much to the time taken, but character matching *is* what this is all
about... */
case OP_NOTEXACT:
case OP_NOTEXACTI:
min = max = GET2(ecode, 1);
ecode += 1 + IMM2_SIZE;
goto REPEATNOTCHAR;
case OP_NOTUPTO:
case OP_NOTUPTOI:
case OP_NOTMINUPTO:
case OP_NOTMINUPTOI:
min = 0;
max = GET2(ecode, 1);
minimize = *ecode == OP_NOTMINUPTO || *ecode == OP_NOTMINUPTOI;
ecode += 1 + IMM2_SIZE;
goto REPEATNOTCHAR;
case OP_NOTPOSSTAR:
case OP_NOTPOSSTARI:
possessive = TRUE;
min = 0;
max = INT_MAX;
ecode++;
goto REPEATNOTCHAR;
case OP_NOTPOSPLUS:
case OP_NOTPOSPLUSI:
possessive = TRUE;
min = 1;
max = INT_MAX;
ecode++;
goto REPEATNOTCHAR;
case OP_NOTPOSQUERY:
case OP_NOTPOSQUERYI:
possessive = TRUE;
min = 0;
max = 1;
ecode++;
goto REPEATNOTCHAR;
case OP_NOTPOSUPTO:
case OP_NOTPOSUPTOI:
possessive = TRUE;
min = 0;
max = GET2(ecode, 1);
ecode += 1 + IMM2_SIZE;
goto REPEATNOTCHAR;
case OP_NOTSTAR:
case OP_NOTSTARI:
case OP_NOTMINSTAR:
case OP_NOTMINSTARI:
case OP_NOTPLUS:
case OP_NOTPLUSI:
case OP_NOTMINPLUS:
case OP_NOTMINPLUSI:
case OP_NOTQUERY:
case OP_NOTQUERYI:
case OP_NOTMINQUERY:
case OP_NOTMINQUERYI:
c = *ecode++ - ((op >= OP_NOTSTARI)? OP_NOTSTARI: OP_NOTSTAR);
minimize = (c & 1) != 0;
min = rep_min[c]; /* Pick up values from tables; */
max = rep_max[c]; /* zero for max => infinity */
if (max == 0) max = INT_MAX;
/* Common code for all repeated single-byte matches. */
REPEATNOTCHAR:
GETCHARINCTEST(fc, ecode);
/* The code is duplicated for the caseless and caseful cases, for speed,
since matching characters is likely to be quite common. First, ensure the
minimum number of matches are present. If min = max, continue at the same
level without recursing. Otherwise, if minimizing, keep trying the rest of
the expression and advancing one matching character if failing, up to the
maximum. Alternatively, if maximizing, find the maximum number of
characters and work backwards. */
DPRINTF(("negative matching %c{%d,%d} against subject %.*s\n", fc, min, max,
max, (char *)eptr));
if (op >= OP_NOTSTARI) /* Caseless */
{
#ifdef SUPPORT_UTF
#ifdef SUPPORT_UCP
if (utf && fc > 127)
foc = UCD_OTHERCASE(fc);
#else
if (utf && fc > 127)
foc = fc;
#endif /* SUPPORT_UCP */
else
#endif /* SUPPORT_UTF */
foc = TABLE_GET(fc, md->fcc, fc);
#ifdef SUPPORT_UTF
if (utf)
{
register pcre_uint32 d;
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(d, eptr);
if (fc == d || (unsigned int)foc == d) RRETURN(MATCH_NOMATCH);
}
}
else
#endif /* SUPPORT_UTF */
/* Not UTF mode */
{
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (fc == *eptr || foc == *eptr) RRETURN(MATCH_NOMATCH);
eptr++;
}
}
if (min == max) continue;
if (minimize)
{
#ifdef SUPPORT_UTF
if (utf)
{
register pcre_uint32 d;
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM28);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(d, eptr);
if (fc == d || (unsigned int)foc == d) RRETURN(MATCH_NOMATCH);
}
}
else
#endif /*SUPPORT_UTF */
/* Not UTF mode */
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM29);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (fc == *eptr || foc == *eptr) RRETURN(MATCH_NOMATCH);
eptr++;
}
}
/* Control never gets here */
}
/* Maximize case */
else
{
pp = eptr;
#ifdef SUPPORT_UTF
if (utf)
{
register pcre_uint32 d;
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(d, eptr, len);
if (fc == d || (unsigned int)foc == d) break;
eptr += len;
}
if (possessive) continue; /* No backtracking */
for(;;)
{
if (eptr <= pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM30);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr--;
BACKCHAR(eptr);
}
}
else
#endif /* SUPPORT_UTF */
/* Not UTF mode */
{
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (fc == *eptr || foc == *eptr) break;
eptr++;
}
if (possessive) continue; /* No backtracking */
for (;;)
{
if (eptr == pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM31);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr--;
}
}
/* Control never gets here */
}
}
/* Caseful comparisons */
else
{
#ifdef SUPPORT_UTF
if (utf)
{
register pcre_uint32 d;
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(d, eptr);
if (fc == d) RRETURN(MATCH_NOMATCH);
}
}
else
#endif
/* Not UTF mode */
{
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (fc == *eptr++) RRETURN(MATCH_NOMATCH);
}
}
if (min == max) continue;
if (minimize)
{
#ifdef SUPPORT_UTF
if (utf)
{
register pcre_uint32 d;
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM32);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(d, eptr);
if (fc == d) RRETURN(MATCH_NOMATCH);
}
}
else
#endif
/* Not UTF mode */
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM33);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (fc == *eptr++) RRETURN(MATCH_NOMATCH);
}
}
/* Control never gets here */
}
/* Maximize case */
else
{
pp = eptr;
#ifdef SUPPORT_UTF
if (utf)
{
register pcre_uint32 d;
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(d, eptr, len);
if (fc == d) break;
eptr += len;
}
if (possessive) continue; /* No backtracking */
for(;;)
{
if (eptr <= pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM34);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr--;
BACKCHAR(eptr);
}
}
else
#endif
/* Not UTF mode */
{
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (fc == *eptr) break;
eptr++;
}
if (possessive) continue; /* No backtracking */
for (;;)
{
if (eptr == pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM35);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr--;
}
}
/* Control never gets here */
}
}
/* Control never gets here */
/* Match a single character type repeatedly; several different opcodes
share code. This is very similar to the code for single characters, but we
repeat it in the interests of efficiency. */
case OP_TYPEEXACT:
min = max = GET2(ecode, 1);
minimize = TRUE;
ecode += 1 + IMM2_SIZE;
goto REPEATTYPE;
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
min = 0;
max = GET2(ecode, 1);
minimize = *ecode == OP_TYPEMINUPTO;
ecode += 1 + IMM2_SIZE;
goto REPEATTYPE;
case OP_TYPEPOSSTAR:
possessive = TRUE;
min = 0;
max = INT_MAX;
ecode++;
goto REPEATTYPE;
case OP_TYPEPOSPLUS:
possessive = TRUE;
min = 1;
max = INT_MAX;
ecode++;
goto REPEATTYPE;
case OP_TYPEPOSQUERY:
possessive = TRUE;
min = 0;
max = 1;
ecode++;
goto REPEATTYPE;
case OP_TYPEPOSUPTO:
possessive = TRUE;
min = 0;
max = GET2(ecode, 1);
ecode += 1 + IMM2_SIZE;
goto REPEATTYPE;
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
c = *ecode++ - OP_TYPESTAR;
minimize = (c & 1) != 0;
min = rep_min[c]; /* Pick up values from tables; */
max = rep_max[c]; /* zero for max => infinity */
if (max == 0) max = INT_MAX;
/* Common code for all repeated single character type matches. Note that
in UTF-8 mode, '.' matches a character of any length, but for the other
character types, the valid characters are all one-byte long. */
REPEATTYPE:
ctype = *ecode++; /* Code for the character type */
#ifdef SUPPORT_UCP
if (ctype == OP_PROP || ctype == OP_NOTPROP)
{
prop_fail_result = ctype == OP_NOTPROP;
prop_type = *ecode++;
prop_value = *ecode++;
}
else prop_type = -1;
#endif
/* First, ensure the minimum number of matches are present. Use inline
code for maximizing the speed, and do the type test once at the start
(i.e. keep it out of the loop). Separate the UTF-8 code completely as that
is tidier. Also separate the UCP code, which can be the same for both UTF-8
and single-bytes. */
if (min > 0)
{
#ifdef SUPPORT_UCP
if (prop_type >= 0)
{
switch(prop_type)
{
case PT_ANY:
if (prop_fail_result) RRETURN(MATCH_NOMATCH);
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
}
break;
case PT_LAMP:
for (i = 1; i <= min; i++)
{
int chartype;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
chartype = UCD_CHARTYPE(c);
if ((chartype == ucp_Lu ||
chartype == ucp_Ll ||
chartype == ucp_Lt) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
break;
case PT_GC:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if ((UCD_CATEGORY(c) == prop_value) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
break;
case PT_PC:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if ((UCD_CHARTYPE(c) == prop_value) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
break;
case PT_SC:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if ((UCD_SCRIPT(c) == prop_value) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
break;
case PT_ALNUM:
for (i = 1; i <= min; i++)
{
int category;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
category = UCD_CATEGORY(c);
if ((category == ucp_L || category == ucp_N) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
break;
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
if (prop_fail_result) RRETURN(MATCH_NOMATCH);
break;
default:
if ((UCD_CATEGORY(c) == ucp_Z) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
break;
}
}
break;
case PT_WORD:
for (i = 1; i <= min; i++)
{
int category;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
category = UCD_CATEGORY(c);
if ((category == ucp_L || category == ucp_N || c == CHAR_UNDERSCORE)
== prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
break;
case PT_CLIST:
for (i = 1; i <= min; i++)
{
const pcre_uint32 *cp;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
cp = PRIV(ucd_caseless_sets) + prop_value;
for (;;)
{
if (c < *cp)
{ if (prop_fail_result) break; else { RRETURN(MATCH_NOMATCH); } }
if (c == *cp++)
{ if (prop_fail_result) { RRETURN(MATCH_NOMATCH); } else break; }
}
}
break;
case PT_UCNC:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if ((c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
c >= 0xe000) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
break;
/* This should not occur */
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
}
/* Match extended Unicode sequences. We will get here only if the
support is in the binary; otherwise a compile-time error occurs. */
else if (ctype == OP_EXTUNI)
{
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
else
{
int lgb, rgb;
GETCHARINCTEST(c, eptr);
lgb = UCD_GRAPHBREAK(c);
while (eptr < md->end_subject)
{
int len = 1;
if (!utf) c = *eptr; else { GETCHARLEN(c, eptr, len); }
rgb = UCD_GRAPHBREAK(c);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
lgb = rgb;
eptr += len;
}
}
CHECK_PARTIAL();
}
}
else
#endif /* SUPPORT_UCP */
/* Handle all other cases when the coding is UTF-8 */
#ifdef SUPPORT_UTF
if (utf) switch(ctype)
{
case OP_ANY:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (IS_NEWLINE(eptr)) RRETURN(MATCH_NOMATCH);
if (md->partial != 0 &&
eptr + 1 >= md->end_subject &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
UCHAR21(eptr) == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
eptr++;
ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
}
break;
case OP_ALLANY:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
eptr++;
ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
}
break;
case OP_ANYBYTE:
if (eptr > md->end_subject - min) RRETURN(MATCH_NOMATCH);
eptr += min;
break;
case OP_ANYNL:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(c, eptr);
switch(c)
{
default: RRETURN(MATCH_NOMATCH);
case CHAR_CR:
if (eptr < md->end_subject && UCHAR21(eptr) == CHAR_LF) eptr++;
break;
case CHAR_LF:
break;
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#ifndef EBCDIC
case 0x2028:
case 0x2029:
#endif /* Not EBCDIC */
if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
break;
}
}
break;
case OP_NOT_HSPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(c, eptr);
switch(c)
{
HSPACE_CASES: RRETURN(MATCH_NOMATCH); /* Byte and multibyte cases */
default: break;
}
}
break;
case OP_HSPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(c, eptr);
switch(c)
{
HSPACE_CASES: break; /* Byte and multibyte cases */
default: RRETURN(MATCH_NOMATCH);
}
}
break;
case OP_NOT_VSPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(c, eptr);
switch(c)
{
VSPACE_CASES: RRETURN(MATCH_NOMATCH);
default: break;
}
}
break;
case OP_VSPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(c, eptr);
switch(c)
{
VSPACE_CASES: break;
default: RRETURN(MATCH_NOMATCH);
}
}
break;
case OP_NOT_DIGIT:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINC(c, eptr);
if (c < 128 && (md->ctypes[c] & ctype_digit) != 0)
RRETURN(MATCH_NOMATCH);
}
break;
case OP_DIGIT:
for (i = 1; i <= min; i++)
{
pcre_uint32 cc;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
cc = UCHAR21(eptr);
if (cc >= 128 || (md->ctypes[cc] & ctype_digit) == 0)
RRETURN(MATCH_NOMATCH);
eptr++;
/* No need to skip more bytes - we know it's a 1-byte character */
}
break;
case OP_NOT_WHITESPACE:
for (i = 1; i <= min; i++)
{
pcre_uint32 cc;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
cc = UCHAR21(eptr);
if (cc < 128 && (md->ctypes[cc] & ctype_space) != 0)
RRETURN(MATCH_NOMATCH);
eptr++;
ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
}
break;
case OP_WHITESPACE:
for (i = 1; i <= min; i++)
{
pcre_uint32 cc;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
cc = UCHAR21(eptr);
if (cc >= 128 || (md->ctypes[cc] & ctype_space) == 0)
RRETURN(MATCH_NOMATCH);
eptr++;
/* No need to skip more bytes - we know it's a 1-byte character */
}
break;
case OP_NOT_WORDCHAR:
for (i = 1; i <= min; i++)
{
pcre_uint32 cc;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
cc = UCHAR21(eptr);
if (cc < 128 && (md->ctypes[cc] & ctype_word) != 0)
RRETURN(MATCH_NOMATCH);
eptr++;
ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
}
break;
case OP_WORDCHAR:
for (i = 1; i <= min; i++)
{
pcre_uint32 cc;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
cc = UCHAR21(eptr);
if (cc >= 128 || (md->ctypes[cc] & ctype_word) == 0)
RRETURN(MATCH_NOMATCH);
eptr++;
/* No need to skip more bytes - we know it's a 1-byte character */
}
break;
default:
RRETURN(PCRE_ERROR_INTERNAL);
} /* End switch(ctype) */
else
#endif /* SUPPORT_UTF */
/* Code for the non-UTF-8 case for minimum matching of operators other
than OP_PROP and OP_NOTPROP. */
switch(ctype)
{
case OP_ANY:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (IS_NEWLINE(eptr)) RRETURN(MATCH_NOMATCH);
if (md->partial != 0 &&
eptr + 1 >= md->end_subject &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
*eptr == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
eptr++;
}
break;
case OP_ALLANY:
if (eptr > md->end_subject - min)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
eptr += min;
break;
case OP_ANYBYTE:
if (eptr > md->end_subject - min)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
eptr += min;
break;
case OP_ANYNL:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
switch(*eptr++)
{
default: RRETURN(MATCH_NOMATCH);
case CHAR_CR:
if (eptr < md->end_subject && *eptr == CHAR_LF) eptr++;
break;
case CHAR_LF:
break;
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
case 0x2028:
case 0x2029:
#endif
if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
break;
}
}
break;
case OP_NOT_HSPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
switch(*eptr++)
{
default: break;
HSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
HSPACE_MULTIBYTE_CASES:
#endif
RRETURN(MATCH_NOMATCH);
}
}
break;
case OP_HSPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
switch(*eptr++)
{
default: RRETURN(MATCH_NOMATCH);
HSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
HSPACE_MULTIBYTE_CASES:
#endif
break;
}
}
break;
case OP_NOT_VSPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
switch(*eptr++)
{
VSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
VSPACE_MULTIBYTE_CASES:
#endif
RRETURN(MATCH_NOMATCH);
default: break;
}
}
break;
case OP_VSPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
switch(*eptr++)
{
default: RRETURN(MATCH_NOMATCH);
VSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
VSPACE_MULTIBYTE_CASES:
#endif
break;
}
}
break;
case OP_NOT_DIGIT:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (MAX_255(*eptr) && (md->ctypes[*eptr] & ctype_digit) != 0)
RRETURN(MATCH_NOMATCH);
eptr++;
}
break;
case OP_DIGIT:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (!MAX_255(*eptr) || (md->ctypes[*eptr] & ctype_digit) == 0)
RRETURN(MATCH_NOMATCH);
eptr++;
}
break;
case OP_NOT_WHITESPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (MAX_255(*eptr) && (md->ctypes[*eptr] & ctype_space) != 0)
RRETURN(MATCH_NOMATCH);
eptr++;
}
break;
case OP_WHITESPACE:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (!MAX_255(*eptr) || (md->ctypes[*eptr] & ctype_space) == 0)
RRETURN(MATCH_NOMATCH);
eptr++;
}
break;
case OP_NOT_WORDCHAR:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (MAX_255(*eptr) && (md->ctypes[*eptr] & ctype_word) != 0)
RRETURN(MATCH_NOMATCH);
eptr++;
}
break;
case OP_WORDCHAR:
for (i = 1; i <= min; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (!MAX_255(*eptr) || (md->ctypes[*eptr] & ctype_word) == 0)
RRETURN(MATCH_NOMATCH);
eptr++;
}
break;
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
}
/* If min = max, continue at the same level without recursing */
if (min == max) continue;
/* If minimizing, we have to test the rest of the pattern before each
subsequent match. Again, separate the UTF-8 case for speed, and also
separate the UCP cases. */
if (minimize)
{
#ifdef SUPPORT_UCP
if (prop_type >= 0)
{
switch(prop_type)
{
case PT_ANY:
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM36);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if (prop_fail_result) RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
case PT_LAMP:
for (fi = min;; fi++)
{
int chartype;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM37);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
chartype = UCD_CHARTYPE(c);
if ((chartype == ucp_Lu ||
chartype == ucp_Ll ||
chartype == ucp_Lt) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
case PT_GC:
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM38);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if ((UCD_CATEGORY(c) == prop_value) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
case PT_PC:
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM39);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if ((UCD_CHARTYPE(c) == prop_value) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
case PT_SC:
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM40);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if ((UCD_SCRIPT(c) == prop_value) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
case PT_ALNUM:
for (fi = min;; fi++)
{
int category;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM59);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
category = UCD_CATEGORY(c);
if ((category == ucp_L || category == ucp_N) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM61);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
if (prop_fail_result) RRETURN(MATCH_NOMATCH);
break;
default:
if ((UCD_CATEGORY(c) == ucp_Z) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
break;
}
}
/* Control never gets here */
case PT_WORD:
for (fi = min;; fi++)
{
int category;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM62);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
category = UCD_CATEGORY(c);
if ((category == ucp_L ||
category == ucp_N ||
c == CHAR_UNDERSCORE)
== prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
case PT_CLIST:
for (fi = min;; fi++)
{
const pcre_uint32 *cp;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM67);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
cp = PRIV(ucd_caseless_sets) + prop_value;
for (;;)
{
if (c < *cp)
{ if (prop_fail_result) break; else { RRETURN(MATCH_NOMATCH); } }
if (c == *cp++)
{ if (prop_fail_result) { RRETURN(MATCH_NOMATCH); } else break; }
}
}
/* Control never gets here */
case PT_UCNC:
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM60);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
GETCHARINCTEST(c, eptr);
if ((c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
c >= 0xe000) == prop_fail_result)
RRETURN(MATCH_NOMATCH);
}
/* Control never gets here */
/* This should never occur */
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
}
/* Match extended Unicode sequences. We will get here only if the
support is in the binary; otherwise a compile-time error occurs. */
else if (ctype == OP_EXTUNI)
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM41);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
else
{
int lgb, rgb;
GETCHARINCTEST(c, eptr);
lgb = UCD_GRAPHBREAK(c);
while (eptr < md->end_subject)
{
int len = 1;
if (!utf) c = *eptr; else { GETCHARLEN(c, eptr, len); }
rgb = UCD_GRAPHBREAK(c);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
lgb = rgb;
eptr += len;
}
}
CHECK_PARTIAL();
}
}
else
#endif /* SUPPORT_UCP */
#ifdef SUPPORT_UTF
if (utf)
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM42);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (ctype == OP_ANY && IS_NEWLINE(eptr))
RRETURN(MATCH_NOMATCH);
GETCHARINC(c, eptr);
switch(ctype)
{
case OP_ANY: /* This is the non-NL case */
if (md->partial != 0 && /* Take care with CRLF partial */
eptr >= md->end_subject &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
break;
case OP_ALLANY:
case OP_ANYBYTE:
break;
case OP_ANYNL:
switch(c)
{
default: RRETURN(MATCH_NOMATCH);
case CHAR_CR:
if (eptr < md->end_subject && UCHAR21(eptr) == CHAR_LF) eptr++;
break;
case CHAR_LF:
break;
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#ifndef EBCDIC
case 0x2028:
case 0x2029:
#endif /* Not EBCDIC */
if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
break;
}
break;
case OP_NOT_HSPACE:
switch(c)
{
HSPACE_CASES: RRETURN(MATCH_NOMATCH);
default: break;
}
break;
case OP_HSPACE:
switch(c)
{
HSPACE_CASES: break;
default: RRETURN(MATCH_NOMATCH);
}
break;
case OP_NOT_VSPACE:
switch(c)
{
VSPACE_CASES: RRETURN(MATCH_NOMATCH);
default: break;
}
break;
case OP_VSPACE:
switch(c)
{
VSPACE_CASES: break;
default: RRETURN(MATCH_NOMATCH);
}
break;
case OP_NOT_DIGIT:
if (c < 256 && (md->ctypes[c] & ctype_digit) != 0)
RRETURN(MATCH_NOMATCH);
break;
case OP_DIGIT:
if (c >= 256 || (md->ctypes[c] & ctype_digit) == 0)
RRETURN(MATCH_NOMATCH);
break;
case OP_NOT_WHITESPACE:
if (c < 256 && (md->ctypes[c] & ctype_space) != 0)
RRETURN(MATCH_NOMATCH);
break;
case OP_WHITESPACE:
if (c >= 256 || (md->ctypes[c] & ctype_space) == 0)
RRETURN(MATCH_NOMATCH);
break;
case OP_NOT_WORDCHAR:
if (c < 256 && (md->ctypes[c] & ctype_word) != 0)
RRETURN(MATCH_NOMATCH);
break;
case OP_WORDCHAR:
if (c >= 256 || (md->ctypes[c] & ctype_word) == 0)
RRETURN(MATCH_NOMATCH);
break;
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
}
}
else
#endif
/* Not UTF mode */
{
for (fi = min;; fi++)
{
RMATCH(eptr, ecode, offset_top, md, eptrb, RM43);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
if (fi >= max) RRETURN(MATCH_NOMATCH);
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
if (ctype == OP_ANY && IS_NEWLINE(eptr))
RRETURN(MATCH_NOMATCH);
c = *eptr++;
switch(ctype)
{
case OP_ANY: /* This is the non-NL case */
if (md->partial != 0 && /* Take care with CRLF partial */
eptr >= md->end_subject &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
c == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
break;
case OP_ALLANY:
case OP_ANYBYTE:
break;
case OP_ANYNL:
switch(c)
{
default: RRETURN(MATCH_NOMATCH);
case CHAR_CR:
if (eptr < md->end_subject && *eptr == CHAR_LF) eptr++;
break;
case CHAR_LF:
break;
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
case 0x2028:
case 0x2029:
#endif
if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
break;
}
break;
case OP_NOT_HSPACE:
switch(c)
{
default: break;
HSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
HSPACE_MULTIBYTE_CASES:
#endif
RRETURN(MATCH_NOMATCH);
}
break;
case OP_HSPACE:
switch(c)
{
default: RRETURN(MATCH_NOMATCH);
HSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
HSPACE_MULTIBYTE_CASES:
#endif
break;
}
break;
case OP_NOT_VSPACE:
switch(c)
{
default: break;
VSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
VSPACE_MULTIBYTE_CASES:
#endif
RRETURN(MATCH_NOMATCH);
}
break;
case OP_VSPACE:
switch(c)
{
default: RRETURN(MATCH_NOMATCH);
VSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
VSPACE_MULTIBYTE_CASES:
#endif
break;
}
break;
case OP_NOT_DIGIT:
if (MAX_255(c) && (md->ctypes[c] & ctype_digit) != 0) RRETURN(MATCH_NOMATCH);
break;
case OP_DIGIT:
if (!MAX_255(c) || (md->ctypes[c] & ctype_digit) == 0) RRETURN(MATCH_NOMATCH);
break;
case OP_NOT_WHITESPACE:
if (MAX_255(c) && (md->ctypes[c] & ctype_space) != 0) RRETURN(MATCH_NOMATCH);
break;
case OP_WHITESPACE:
if (!MAX_255(c) || (md->ctypes[c] & ctype_space) == 0) RRETURN(MATCH_NOMATCH);
break;
case OP_NOT_WORDCHAR:
if (MAX_255(c) && (md->ctypes[c] & ctype_word) != 0) RRETURN(MATCH_NOMATCH);
break;
case OP_WORDCHAR:
if (!MAX_255(c) || (md->ctypes[c] & ctype_word) == 0) RRETURN(MATCH_NOMATCH);
break;
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
}
}
/* Control never gets here */
}
/* If maximizing, it is worth using inline code for speed, doing the type
test once at the start (i.e. keep it out of the loop). Again, keep the
UTF-8 and UCP stuff separate. */
else
{
pp = eptr; /* Remember where we started */
#ifdef SUPPORT_UCP
if (prop_type >= 0)
{
switch(prop_type)
{
case PT_ANY:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
if (prop_fail_result) break;
eptr+= len;
}
break;
case PT_LAMP:
for (i = min; i < max; i++)
{
int chartype;
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
chartype = UCD_CHARTYPE(c);
if ((chartype == ucp_Lu ||
chartype == ucp_Ll ||
chartype == ucp_Lt) == prop_fail_result)
break;
eptr+= len;
}
break;
case PT_GC:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
if ((UCD_CATEGORY(c) == prop_value) == prop_fail_result) break;
eptr+= len;
}
break;
case PT_PC:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
if ((UCD_CHARTYPE(c) == prop_value) == prop_fail_result) break;
eptr+= len;
}
break;
case PT_SC:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
if ((UCD_SCRIPT(c) == prop_value) == prop_fail_result) break;
eptr+= len;
}
break;
case PT_ALNUM:
for (i = min; i < max; i++)
{
int category;
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
category = UCD_CATEGORY(c);
if ((category == ucp_L || category == ucp_N) == prop_fail_result)
break;
eptr+= len;
}
break;
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
if (prop_fail_result) goto ENDLOOP99; /* Break the loop */
break;
default:
if ((UCD_CATEGORY(c) == ucp_Z) == prop_fail_result)
goto ENDLOOP99; /* Break the loop */
break;
}
eptr+= len;
}
ENDLOOP99:
break;
case PT_WORD:
for (i = min; i < max; i++)
{
int category;
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
category = UCD_CATEGORY(c);
if ((category == ucp_L || category == ucp_N ||
c == CHAR_UNDERSCORE) == prop_fail_result)
break;
eptr+= len;
}
break;
case PT_CLIST:
for (i = min; i < max; i++)
{
const pcre_uint32 *cp;
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
cp = PRIV(ucd_caseless_sets) + prop_value;
for (;;)
{
if (c < *cp)
{ if (prop_fail_result) break; else goto GOT_MAX; }
if (c == *cp++)
{ if (prop_fail_result) goto GOT_MAX; else break; }
}
eptr += len;
}
GOT_MAX:
break;
case PT_UCNC:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLENTEST(c, eptr, len);
if ((c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
c >= 0xe000) == prop_fail_result)
break;
eptr += len;
}
break;
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
/* eptr is now past the end of the maximum run */
if (possessive) continue; /* No backtracking */
for(;;)
{
if (eptr <= pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM44);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr--;
if (utf) BACKCHAR(eptr);
}
}
/* Match extended Unicode grapheme clusters. We will get here only if the
support is in the binary; otherwise a compile-time error occurs. */
else if (ctype == OP_EXTUNI)
{
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
else
{
int lgb, rgb;
GETCHARINCTEST(c, eptr);
lgb = UCD_GRAPHBREAK(c);
while (eptr < md->end_subject)
{
int len = 1;
if (!utf) c = *eptr; else { GETCHARLEN(c, eptr, len); }
rgb = UCD_GRAPHBREAK(c);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
lgb = rgb;
eptr += len;
}
}
CHECK_PARTIAL();
}
/* eptr is now past the end of the maximum run */
if (possessive) continue; /* No backtracking */
/* We use <= pp rather than == pp to detect the start of the run while
backtracking because the use of \C in UTF mode can cause BACKCHAR to
move back past pp. This is just palliative; the use of \C in UTF mode
is fraught with danger. */
for(;;)
{
int lgb, rgb;
PCRE_PUCHAR fptr;
if (eptr <= pp) goto TAIL_RECURSE; /* At start of char run */
RMATCH(eptr, ecode, offset_top, md, eptrb, RM45);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
/* Backtracking over an extended grapheme cluster involves inspecting
the previous two characters (if present) to see if a break is
permitted between them. */
eptr--;
if (!utf) c = *eptr; else
{
BACKCHAR(eptr);
GETCHAR(c, eptr);
}
rgb = UCD_GRAPHBREAK(c);
for (;;)
{
if (eptr <= pp) goto TAIL_RECURSE; /* At start of char run */
fptr = eptr - 1;
if (!utf) c = *fptr; else
{
BACKCHAR(fptr);
GETCHAR(c, fptr);
}
lgb = UCD_GRAPHBREAK(c);
if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
eptr = fptr;
rgb = lgb;
}
}
}
else
#endif /* SUPPORT_UCP */
#ifdef SUPPORT_UTF
if (utf)
{
switch(ctype)
{
case OP_ANY:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (IS_NEWLINE(eptr)) break;
if (md->partial != 0 && /* Take care with CRLF partial */
eptr + 1 >= md->end_subject &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
UCHAR21(eptr) == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
eptr++;
ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
}
break;
case OP_ALLANY:
if (max < INT_MAX)
{
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
eptr++;
ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
}
}
else
{
eptr = md->end_subject; /* Unlimited UTF-8 repeat */
SCHECK_PARTIAL();
}
break;
/* The byte case is the same as non-UTF8 */
case OP_ANYBYTE:
c = max - min;
if (c > (unsigned int)(md->end_subject - eptr))
{
eptr = md->end_subject;
SCHECK_PARTIAL();
}
else eptr += c;
break;
case OP_ANYNL:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
if (c == CHAR_CR)
{
if (++eptr >= md->end_subject) break;
if (UCHAR21(eptr) == CHAR_LF) eptr++;
}
else
{
if (c != CHAR_LF &&
(md->bsr_anycrlf ||
(c != CHAR_VT && c != CHAR_FF && c != CHAR_NEL
#ifndef EBCDIC
&& c != 0x2028 && c != 0x2029
#endif /* Not EBCDIC */
)))
break;
eptr += len;
}
}
break;
case OP_NOT_HSPACE:
case OP_HSPACE:
for (i = min; i < max; i++)
{
BOOL gotspace;
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
switch(c)
{
HSPACE_CASES: gotspace = TRUE; break;
default: gotspace = FALSE; break;
}
if (gotspace == (ctype == OP_NOT_HSPACE)) break;
eptr += len;
}
break;
case OP_NOT_VSPACE:
case OP_VSPACE:
for (i = min; i < max; i++)
{
BOOL gotspace;
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
switch(c)
{
VSPACE_CASES: gotspace = TRUE; break;
default: gotspace = FALSE; break;
}
if (gotspace == (ctype == OP_NOT_VSPACE)) break;
eptr += len;
}
break;
case OP_NOT_DIGIT:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
if (c < 256 && (md->ctypes[c] & ctype_digit) != 0) break;
eptr+= len;
}
break;
case OP_DIGIT:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
if (c >= 256 ||(md->ctypes[c] & ctype_digit) == 0) break;
eptr+= len;
}
break;
case OP_NOT_WHITESPACE:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
if (c < 256 && (md->ctypes[c] & ctype_space) != 0) break;
eptr+= len;
}
break;
case OP_WHITESPACE:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
if (c >= 256 ||(md->ctypes[c] & ctype_space) == 0) break;
eptr+= len;
}
break;
case OP_NOT_WORDCHAR:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
if (c < 256 && (md->ctypes[c] & ctype_word) != 0) break;
eptr+= len;
}
break;
case OP_WORDCHAR:
for (i = min; i < max; i++)
{
int len = 1;
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
GETCHARLEN(c, eptr, len);
if (c >= 256 || (md->ctypes[c] & ctype_word) == 0) break;
eptr+= len;
}
break;
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
if (possessive) continue; /* No backtracking */
for(;;)
{
if (eptr <= pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM46);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr--;
BACKCHAR(eptr);
if (ctype == OP_ANYNL && eptr > pp && UCHAR21(eptr) == CHAR_NL &&
UCHAR21(eptr - 1) == CHAR_CR) eptr--;
}
}
else
#endif /* SUPPORT_UTF */
/* Not UTF mode */
{
switch(ctype)
{
case OP_ANY:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (IS_NEWLINE(eptr)) break;
if (md->partial != 0 && /* Take care with CRLF partial */
eptr + 1 >= md->end_subject &&
NLBLOCK->nltype == NLTYPE_FIXED &&
NLBLOCK->nllen == 2 &&
*eptr == NLBLOCK->nl[0])
{
md->hitend = TRUE;
if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
}
eptr++;
}
break;
case OP_ALLANY:
case OP_ANYBYTE:
c = max - min;
if (c > (unsigned int)(md->end_subject - eptr))
{
eptr = md->end_subject;
SCHECK_PARTIAL();
}
else eptr += c;
break;
case OP_ANYNL:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
c = *eptr;
if (c == CHAR_CR)
{
if (++eptr >= md->end_subject) break;
if (*eptr == CHAR_LF) eptr++;
}
else
{
if (c != CHAR_LF && (md->bsr_anycrlf ||
(c != CHAR_VT && c != CHAR_FF && c != CHAR_NEL
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
&& c != 0x2028 && c != 0x2029
#endif
))) break;
eptr++;
}
}
break;
case OP_NOT_HSPACE:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
switch(*eptr)
{
default: eptr++; break;
HSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
HSPACE_MULTIBYTE_CASES:
#endif
goto ENDLOOP00;
}
}
ENDLOOP00:
break;
case OP_HSPACE:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
switch(*eptr)
{
default: goto ENDLOOP01;
HSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
HSPACE_MULTIBYTE_CASES:
#endif
eptr++; break;
}
}
ENDLOOP01:
break;
case OP_NOT_VSPACE:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
switch(*eptr)
{
default: eptr++; break;
VSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
VSPACE_MULTIBYTE_CASES:
#endif
goto ENDLOOP02;
}
}
ENDLOOP02:
break;
case OP_VSPACE:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
switch(*eptr)
{
default: goto ENDLOOP03;
VSPACE_BYTE_CASES:
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
VSPACE_MULTIBYTE_CASES:
#endif
eptr++; break;
}
}
ENDLOOP03:
break;
case OP_NOT_DIGIT:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (MAX_255(*eptr) && (md->ctypes[*eptr] & ctype_digit) != 0) break;
eptr++;
}
break;
case OP_DIGIT:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (!MAX_255(*eptr) || (md->ctypes[*eptr] & ctype_digit) == 0) break;
eptr++;
}
break;
case OP_NOT_WHITESPACE:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (MAX_255(*eptr) && (md->ctypes[*eptr] & ctype_space) != 0) break;
eptr++;
}
break;
case OP_WHITESPACE:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (!MAX_255(*eptr) || (md->ctypes[*eptr] & ctype_space) == 0) break;
eptr++;
}
break;
case OP_NOT_WORDCHAR:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (MAX_255(*eptr) && (md->ctypes[*eptr] & ctype_word) != 0) break;
eptr++;
}
break;
case OP_WORDCHAR:
for (i = min; i < max; i++)
{
if (eptr >= md->end_subject)
{
SCHECK_PARTIAL();
break;
}
if (!MAX_255(*eptr) || (md->ctypes[*eptr] & ctype_word) == 0) break;
eptr++;
}
break;
default:
RRETURN(PCRE_ERROR_INTERNAL);
}
if (possessive) continue; /* No backtracking */
for (;;)
{
if (eptr == pp) goto TAIL_RECURSE;
RMATCH(eptr, ecode, offset_top, md, eptrb, RM47);
if (rrc != MATCH_NOMATCH) RRETURN(rrc);
eptr--;
if (ctype == OP_ANYNL && eptr > pp && *eptr == CHAR_LF &&
eptr[-1] == CHAR_CR) eptr--;
}
}
/* Control never gets here */
}
/* There's been some horrible disaster. Arrival here can only mean there is
something seriously wrong in the code above or the OP_xxx definitions. */
default:
DPRINTF(("Unknown opcode %d\n", *ecode));
RRETURN(PCRE_ERROR_UNKNOWN_OPCODE);
}
/* Do not stick any code in here without much thought; it is assumed
that "continue" in the code above comes out to here to repeat the main
loop. */
} /* End of main loop */
/* Control never reaches here */
/* When compiling to use the heap rather than the stack for recursive calls to
match(), the RRETURN() macro jumps here. The number that is saved in
frame->Xwhere indicates which label we actually want to return to. */
#ifdef NO_RECURSE
#define LBL(val) case val: goto L_RM##val;
HEAP_RETURN:
switch (frame->Xwhere)
{
LBL( 1) LBL( 2) LBL( 3) LBL( 4) LBL( 5) LBL( 6) LBL( 7) LBL( 8)
LBL( 9) LBL(10) LBL(11) LBL(12) LBL(13) LBL(14) LBL(15) LBL(17)
LBL(19) LBL(24) LBL(25) LBL(26) LBL(27) LBL(29) LBL(31) LBL(33)
LBL(35) LBL(43) LBL(47) LBL(48) LBL(49) LBL(50) LBL(51) LBL(52)
LBL(53) LBL(54) LBL(55) LBL(56) LBL(57) LBL(58) LBL(63) LBL(64)
LBL(65) LBL(66)
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
LBL(20) LBL(21)
#endif
#ifdef SUPPORT_UTF
LBL(16) LBL(18)
LBL(22) LBL(23) LBL(28) LBL(30)
LBL(32) LBL(34) LBL(42) LBL(46)
#ifdef SUPPORT_UCP
LBL(36) LBL(37) LBL(38) LBL(39) LBL(40) LBL(41) LBL(44) LBL(45)
LBL(59) LBL(60) LBL(61) LBL(62) LBL(67)
#endif /* SUPPORT_UCP */
#endif /* SUPPORT_UTF */
default:
DPRINTF(("jump error in pcre match: label %d non-existent\n", frame->Xwhere));
return PCRE_ERROR_INTERNAL;
}
#undef LBL
#endif /* NO_RECURSE */
}
/***************************************************************************
****************************************************************************
RECURSION IN THE match() FUNCTION
Undefine all the macros that were defined above to handle this. */
#ifdef NO_RECURSE
#undef eptr
#undef ecode
#undef mstart
#undef offset_top
#undef eptrb
#undef flags
#undef callpat
#undef charptr
#undef data
#undef next
#undef pp
#undef prev
#undef saved_eptr
#undef new_recursive
#undef cur_is_word
#undef condition
#undef prev_is_word
#undef ctype
#undef length
#undef max
#undef min
#undef number
#undef offset
#undef op
#undef save_capture_last
#undef save_offset1
#undef save_offset2
#undef save_offset3
#undef stacksave
#undef newptrb
#endif
/* These two are defined as macros in both cases */
#undef fc
#undef fi
/***************************************************************************
***************************************************************************/
#ifdef NO_RECURSE
/*************************************************
* Release allocated heap frames *
*************************************************/
/* This function releases all the allocated frames. The base frame is on the
machine stack, and so must not be freed.
Argument: the address of the base frame
Returns: nothing
*/
static void
release_match_heapframes (heapframe *frame_base)
{
heapframe *nextframe = frame_base->Xnextframe;
while (nextframe != NULL)
{
heapframe *oldframe = nextframe;
nextframe = nextframe->Xnextframe;
(PUBL(stack_free))(oldframe);
}
}
#endif
/*************************************************
* Execute a Regular Expression *
*************************************************/
/* This function applies a compiled re to a subject string and picks out
portions of the string if it matches. Two elements in the vector are set for
each substring: the offsets to the start and end of the substring.
Arguments:
argument_re points to the compiled expression
extra_data points to extra data or is NULL
subject points to the subject string
length length of subject string (may contain binary zeros)
start_offset where to start in the subject string
options option bits
offsets points to a vector of ints to be filled in with offsets
offsetcount the number of elements in the vector
Returns: > 0 => success; value is the number of elements filled in
= 0 => success, but offsets is not big enough
-1 => failed to match
< -1 => some kind of unexpected problem
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_exec(const pcre *argument_re, const pcre_extra *extra_data,
PCRE_SPTR subject, int length, int start_offset, int options, int *offsets,
int offsetcount)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_exec(const pcre16 *argument_re, const pcre16_extra *extra_data,
PCRE_SPTR16 subject, int length, int start_offset, int options, int *offsets,
int offsetcount)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_exec(const pcre32 *argument_re, const pcre32_extra *extra_data,
PCRE_SPTR32 subject, int length, int start_offset, int options, int *offsets,
int offsetcount)
#endif
{
int rc, ocount, arg_offset_max;
int newline;
BOOL using_temporary_offsets = FALSE;
BOOL anchored;
BOOL startline;
BOOL firstline;
BOOL utf;
BOOL has_first_char = FALSE;
BOOL has_req_char = FALSE;
pcre_uchar first_char = 0;
pcre_uchar first_char2 = 0;
pcre_uchar req_char = 0;
pcre_uchar req_char2 = 0;
match_data match_block;
match_data *md = &match_block;
const pcre_uint8 *tables;
const pcre_uint8 *start_bits = NULL;
PCRE_PUCHAR start_match = (PCRE_PUCHAR)subject + start_offset;
PCRE_PUCHAR end_subject;
PCRE_PUCHAR start_partial = NULL;
PCRE_PUCHAR match_partial = NULL;
PCRE_PUCHAR req_char_ptr = start_match - 1;
const pcre_study_data *study;
const REAL_PCRE *re = (const REAL_PCRE *)argument_re;
#ifdef NO_RECURSE
heapframe frame_zero;
frame_zero.Xprevframe = NULL; /* Marks the top level */
frame_zero.Xnextframe = NULL; /* None are allocated yet */
md->match_frames_base = &frame_zero;
#endif
/* Check for the special magic call that measures the size of the stack used
per recursive call of match(). Without the funny casting for sizeof, a Windows
compiler gave this error: "unary minus operator applied to unsigned type,
result still unsigned". Hopefully the cast fixes that. */
if (re == NULL && extra_data == NULL && subject == NULL && length == -999 &&
start_offset == -999)
#ifdef NO_RECURSE
return -((int)sizeof(heapframe));
#else
return match(NULL, NULL, NULL, 0, NULL, NULL, 0);
#endif
/* Plausibility checks */
if ((options & ~PUBLIC_EXEC_OPTIONS) != 0) return PCRE_ERROR_BADOPTION;
if (re == NULL || subject == NULL || (offsets == NULL && offsetcount > 0))
return PCRE_ERROR_NULL;
if (offsetcount < 0) return PCRE_ERROR_BADCOUNT;
if (length < 0) return PCRE_ERROR_BADLENGTH;
if (start_offset < 0 || start_offset > length) return PCRE_ERROR_BADOFFSET;
/* Check that the first field in the block is the magic number. If it is not,
return with PCRE_ERROR_BADMAGIC. However, if the magic number is equal to
REVERSED_MAGIC_NUMBER we return with PCRE_ERROR_BADENDIANNESS, which
means that the pattern is likely compiled with different endianness. */
if (re->magic_number != MAGIC_NUMBER)
return re->magic_number == REVERSED_MAGIC_NUMBER?
PCRE_ERROR_BADENDIANNESS:PCRE_ERROR_BADMAGIC;
if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
/* These two settings are used in the code for checking a UTF-8 string that
follows immediately afterwards. Other values in the md block are used only
during "normal" pcre_exec() processing, not when the JIT support is in use,
so they are set up later. */
/* PCRE_UTF16 has the same value as PCRE_UTF8. */
utf = md->utf = (re->options & PCRE_UTF8) != 0;
md->partial = ((options & PCRE_PARTIAL_HARD) != 0)? 2 :
((options & PCRE_PARTIAL_SOFT) != 0)? 1 : 0;
/* Check a UTF-8 string if required. Pass back the character offset and error
code for an invalid string if a results vector is available. */
#ifdef SUPPORT_UTF
if (utf && (options & PCRE_NO_UTF8_CHECK) == 0)
{
int erroroffset;
int errorcode = PRIV(valid_utf)((PCRE_PUCHAR)subject, length, &erroroffset);
if (errorcode != 0)
{
if (offsetcount >= 2)
{
offsets[0] = erroroffset;
offsets[1] = errorcode;
}
#if defined COMPILE_PCRE8
return (errorcode <= PCRE_UTF8_ERR5 && md->partial > 1)?
PCRE_ERROR_SHORTUTF8 : PCRE_ERROR_BADUTF8;
#elif defined COMPILE_PCRE16
return (errorcode <= PCRE_UTF16_ERR1 && md->partial > 1)?
PCRE_ERROR_SHORTUTF16 : PCRE_ERROR_BADUTF16;
#elif defined COMPILE_PCRE32
return PCRE_ERROR_BADUTF32;
#endif
}
#if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
/* Check that a start_offset points to the start of a UTF character. */
if (start_offset > 0 && start_offset < length &&
NOT_FIRSTCHAR(((PCRE_PUCHAR)subject)[start_offset]))
return PCRE_ERROR_BADUTF8_OFFSET;
#endif
}
#endif
/* If the pattern was successfully studied with JIT support, run the JIT
executable instead of the rest of this function. Most options must be set at
compile time for the JIT code to be usable. Fallback to the normal code path if
an unsupported flag is set. */
#ifdef SUPPORT_JIT
if (extra_data != NULL
&& (extra_data->flags & (PCRE_EXTRA_EXECUTABLE_JIT |
PCRE_EXTRA_TABLES)) == PCRE_EXTRA_EXECUTABLE_JIT
&& extra_data->executable_jit != NULL
&& (options & ~PUBLIC_JIT_EXEC_OPTIONS) == 0)
{
rc = PRIV(jit_exec)(extra_data, (const pcre_uchar *)subject, length,
start_offset, options, offsets, offsetcount);
/* PCRE_ERROR_NULL means that the selected normal or partial matching
mode is not compiled. In this case we simply fallback to interpreter. */
if (rc != PCRE_ERROR_JIT_BADOPTION) return rc;
}
#endif
/* Carry on with non-JIT matching. This information is for finding all the
numbers associated with a given name, for condition testing. */
md->name_table = (pcre_uchar *)re + re->name_table_offset;
md->name_count = re->name_count;
md->name_entry_size = re->name_entry_size;
/* Fish out the optional data from the extra_data structure, first setting
the default values. */
study = NULL;
md->match_limit = MATCH_LIMIT;
md->match_limit_recursion = MATCH_LIMIT_RECURSION;
md->callout_data = NULL;
/* The table pointer is always in native byte order. */
tables = re->tables;
/* The two limit values override the defaults, whatever their value. */
if (extra_data != NULL)
{
unsigned long int flags = extra_data->flags;
if ((flags & PCRE_EXTRA_STUDY_DATA) != 0)
study = (const pcre_study_data *)extra_data->study_data;
if ((flags & PCRE_EXTRA_MATCH_LIMIT) != 0)
md->match_limit = extra_data->match_limit;
if ((flags & PCRE_EXTRA_MATCH_LIMIT_RECURSION) != 0)
md->match_limit_recursion = extra_data->match_limit_recursion;
if ((flags & PCRE_EXTRA_CALLOUT_DATA) != 0)
md->callout_data = extra_data->callout_data;
if ((flags & PCRE_EXTRA_TABLES) != 0) tables = extra_data->tables;
}
/* Limits in the regex override only if they are smaller. */
if ((re->flags & PCRE_MLSET) != 0 && re->limit_match < md->match_limit)
md->match_limit = re->limit_match;
if ((re->flags & PCRE_RLSET) != 0 &&
re->limit_recursion < md->match_limit_recursion)
md->match_limit_recursion = re->limit_recursion;
/* If the exec call supplied NULL for tables, use the inbuilt ones. This
is a feature that makes it possible to save compiled regex and re-use them
in other programs later. */
if (tables == NULL) tables = PRIV(default_tables);
/* Set up other data */
anchored = ((re->options | options) & PCRE_ANCHORED) != 0;
startline = (re->flags & PCRE_STARTLINE) != 0;
firstline = (re->options & PCRE_FIRSTLINE) != 0;
/* The code starts after the real_pcre block and the capture name table. */
md->start_code = (const pcre_uchar *)re + re->name_table_offset +
re->name_count * re->name_entry_size;
md->start_subject = (PCRE_PUCHAR)subject;
md->start_offset = start_offset;
md->end_subject = md->start_subject + length;
end_subject = md->end_subject;
md->endonly = (re->options & PCRE_DOLLAR_ENDONLY) != 0;
md->use_ucp = (re->options & PCRE_UCP) != 0;
md->jscript_compat = (re->options & PCRE_JAVASCRIPT_COMPAT) != 0;
md->ignore_skip_arg = 0;
/* Some options are unpacked into BOOL variables in the hope that testing
them will be faster than individual option bits. */
md->notbol = (options & PCRE_NOTBOL) != 0;
md->noteol = (options & PCRE_NOTEOL) != 0;
md->notempty = (options & PCRE_NOTEMPTY) != 0;
md->notempty_atstart = (options & PCRE_NOTEMPTY_ATSTART) != 0;
md->hitend = FALSE;
md->mark = md->nomatch_mark = NULL; /* In case never set */
md->recursive = NULL; /* No recursion at top level */
md->hasthen = (re->flags & PCRE_HASTHEN) != 0;
md->lcc = tables + lcc_offset;
md->fcc = tables + fcc_offset;
md->ctypes = tables + ctypes_offset;
/* Handle different \R options. */
switch (options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE))
{
case 0:
if ((re->options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)) != 0)
md->bsr_anycrlf = (re->options & PCRE_BSR_ANYCRLF) != 0;
else
#ifdef BSR_ANYCRLF
md->bsr_anycrlf = TRUE;
#else
md->bsr_anycrlf = FALSE;
#endif
break;
case PCRE_BSR_ANYCRLF:
md->bsr_anycrlf = TRUE;
break;
case PCRE_BSR_UNICODE:
md->bsr_anycrlf = FALSE;
break;
default: return PCRE_ERROR_BADNEWLINE;
}
/* Handle different types of newline. The three bits give eight cases. If
nothing is set at run time, whatever was used at compile time applies. */
switch ((((options & PCRE_NEWLINE_BITS) == 0)? re->options :
(pcre_uint32)options) & PCRE_NEWLINE_BITS)
{
case 0: newline = NEWLINE; break; /* Compile-time default */
case PCRE_NEWLINE_CR: newline = CHAR_CR; break;
case PCRE_NEWLINE_LF: newline = CHAR_NL; break;
case PCRE_NEWLINE_CR+
PCRE_NEWLINE_LF: newline = (CHAR_CR << 8) | CHAR_NL; break;
case PCRE_NEWLINE_ANY: newline = -1; break;
case PCRE_NEWLINE_ANYCRLF: newline = -2; break;
default: return PCRE_ERROR_BADNEWLINE;
}
if (newline == -2)
{
md->nltype = NLTYPE_ANYCRLF;
}
else if (newline < 0)
{
md->nltype = NLTYPE_ANY;
}
else
{
md->nltype = NLTYPE_FIXED;
if (newline > 255)
{
md->nllen = 2;
md->nl[0] = (newline >> 8) & 255;
md->nl[1] = newline & 255;
}
else
{
md->nllen = 1;
md->nl[0] = newline;
}
}
/* Partial matching was originally supported only for a restricted set of
regexes; from release 8.00 there are no restrictions, but the bits are still
defined (though never set). So there's no harm in leaving this code. */
if (md->partial && (re->flags & PCRE_NOPARTIAL) != 0)
return PCRE_ERROR_BADPARTIAL;
/* If the expression has got more back references than the offsets supplied can
hold, we get a temporary chunk of working store to use during the matching.
Otherwise, we can use the vector supplied, rounding down its size to a multiple
of 3. */
ocount = offsetcount - (offsetcount % 3);
arg_offset_max = (2*ocount)/3;
if (re->top_backref > 0 && re->top_backref >= ocount/3)
{
ocount = re->top_backref * 3 + 3;
md->offset_vector = (int *)(PUBL(malloc))(ocount * sizeof(int));
if (md->offset_vector == NULL) return PCRE_ERROR_NOMEMORY;
using_temporary_offsets = TRUE;
DPRINTF(("Got memory to hold back references\n"));
}
else md->offset_vector = offsets;
md->offset_end = ocount;
md->offset_max = (2*ocount)/3;
md->capture_last = 0;
/* Reset the working variable associated with each extraction. These should
never be used unless previously set, but they get saved and restored, and so we
initialize them to avoid reading uninitialized locations. Also, unset the
offsets for the matched string. This is really just for tidiness with callouts,
in case they inspect these fields. */
if (md->offset_vector != NULL)
{
register int *iptr = md->offset_vector + ocount;
register int *iend = iptr - re->top_bracket;
if (iend < md->offset_vector + 2) iend = md->offset_vector + 2;
while (--iptr >= iend) *iptr = -1;
if (offsetcount > 0) md->offset_vector[0] = -1;
if (offsetcount > 1) md->offset_vector[1] = -1;
}
/* Set up the first character to match, if available. The first_char value is
never set for an anchored regular expression, but the anchoring may be forced
at run time, so we have to test for anchoring. The first char may be unset for
an unanchored pattern, of course. If there's no first char and the pattern was
studied, there may be a bitmap of possible first characters. */
if (!anchored)
{
if ((re->flags & PCRE_FIRSTSET) != 0)
{
has_first_char = TRUE;
first_char = first_char2 = (pcre_uchar)(re->first_char);
if ((re->flags & PCRE_FCH_CASELESS) != 0)
{
first_char2 = TABLE_GET(first_char, md->fcc, first_char);
#if defined SUPPORT_UCP && !(defined COMPILE_PCRE8)
if (utf && first_char > 127)
first_char2 = UCD_OTHERCASE(first_char);
#endif
}
}
else
if (!startline && study != NULL &&
(study->flags & PCRE_STUDY_MAPPED) != 0)
start_bits = study->start_bits;
}
/* For anchored or unanchored matches, there may be a "last known required
character" set. */
if ((re->flags & PCRE_REQCHSET) != 0)
{
has_req_char = TRUE;
req_char = req_char2 = (pcre_uchar)(re->req_char);
if ((re->flags & PCRE_RCH_CASELESS) != 0)
{
req_char2 = TABLE_GET(req_char, md->fcc, req_char);
#if defined SUPPORT_UCP && !(defined COMPILE_PCRE8)
if (utf && req_char > 127)
req_char2 = UCD_OTHERCASE(req_char);
#endif
}
}
/* ==========================================================================*/
/* Loop for handling unanchored repeated matching attempts; for anchored regexs
the loop runs just once. */
for(;;)
{
PCRE_PUCHAR save_end_subject = end_subject;
PCRE_PUCHAR new_start_match;
/* If firstline is TRUE, the start of the match is constrained to the first
line of a multiline string. That is, the match must be before or at the first
newline. Implement this by temporarily adjusting end_subject so that we stop
scanning at a newline. If the match fails at the newline, later code breaks
this loop. */
if (firstline)
{
PCRE_PUCHAR t = start_match;
#ifdef SUPPORT_UTF
if (utf)
{
while (t < md->end_subject && !IS_NEWLINE(t))
{
t++;
ACROSSCHAR(t < end_subject, *t, t++);
}
}
else
#endif
while (t < md->end_subject && !IS_NEWLINE(t)) t++;
end_subject = t;
}
/* There are some optimizations that avoid running the match if a known
starting point is not found, or if a known later character is not present.
However, there is an option that disables these, for testing and for ensuring
that all callouts do actually occur. The option can be set in the regex by
(*NO_START_OPT) or passed in match-time options. */
if (((options | re->options) & PCRE_NO_START_OPTIMIZE) == 0)
{
/* Advance to a unique first char if there is one. */
if (has_first_char)
{
pcre_uchar smc;
if (first_char != first_char2)
while (start_match < end_subject &&
(smc = UCHAR21TEST(start_match)) != first_char && smc != first_char2)
start_match++;
else
while (start_match < end_subject && UCHAR21TEST(start_match) != first_char)
start_match++;
}
/* Or to just after a linebreak for a multiline match */
else if (startline)
{
if (start_match > md->start_subject + start_offset)
{
#ifdef SUPPORT_UTF
if (utf)
{
while (start_match < end_subject && !WAS_NEWLINE(start_match))
{
start_match++;
ACROSSCHAR(start_match < end_subject, *start_match,
start_match++);
}
}
else
#endif
while (start_match < end_subject && !WAS_NEWLINE(start_match))
start_match++;
/* If we have just passed a CR and the newline option is ANY or ANYCRLF,
and we are now at a LF, advance the match position by one more character.
*/
if (start_match[-1] == CHAR_CR &&
(md->nltype == NLTYPE_ANY || md->nltype == NLTYPE_ANYCRLF) &&
start_match < end_subject &&
UCHAR21TEST(start_match) == CHAR_NL)
start_match++;
}
}
/* Or to a non-unique first byte after study */
else if (start_bits != NULL)
{
while (start_match < end_subject)
{
register pcre_uint32 c = UCHAR21TEST(start_match);
#ifndef COMPILE_PCRE8
if (c > 255) c = 255;
#endif
if ((start_bits[c/8] & (1 << (c&7))) != 0) break;
start_match++;
}
}
} /* Starting optimizations */
/* Restore fudged end_subject */
end_subject = save_end_subject;
/* The following two optimizations are disabled for partial matching or if
disabling is explicitly requested. */
if (((options | re->options) & PCRE_NO_START_OPTIMIZE) == 0 && !md->partial)
{
/* If the pattern was studied, a minimum subject length may be set. This is
a lower bound; no actual string of that length may actually match the
pattern. Although the value is, strictly, in characters, we treat it as
bytes to avoid spending too much time in this optimization. */
if (study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0 &&
(pcre_uint32)(end_subject - start_match) < study->minlength)
{
rc = MATCH_NOMATCH;
break;
}
/* If req_char is set, we know that that character must appear in the
subject for the match to succeed. If the first character is set, req_char
must be later in the subject; otherwise the test starts at the match point.
This optimization can save a huge amount of backtracking in patterns with
nested unlimited repeats that aren't going to match. Writing separate code
for cased/caseless versions makes it go faster, as does using an
autoincrement and backing off on a match.
HOWEVER: when the subject string is very, very long, searching to its end
can take a long time, and give bad performance on quite ordinary patterns.
This showed up when somebody was matching something like /^\d+C/ on a
32-megabyte string... so we don't do this when the string is sufficiently
long. */
if (has_req_char && end_subject - start_match < REQ_BYTE_MAX)
{
register PCRE_PUCHAR p = start_match + (has_first_char? 1:0);
/* We don't need to repeat the search if we haven't yet reached the
place we found it at last time. */
if (p > req_char_ptr)
{
if (req_char != req_char2)
{
while (p < end_subject)
{
register pcre_uint32 pp = UCHAR21INCTEST(p);
if (pp == req_char || pp == req_char2) { p--; break; }
}
}
else
{
while (p < end_subject)
{
if (UCHAR21INCTEST(p) == req_char) { p--; break; }
}
}
/* If we can't find the required character, break the matching loop,
forcing a match failure. */
if (p >= end_subject)
{
rc = MATCH_NOMATCH;
break;
}
/* If we have found the required character, save the point where we
found it, so that we don't search again next time round the loop if
the start hasn't passed this character yet. */
req_char_ptr = p;
}
}
}
#ifdef PCRE_DEBUG /* Sigh. Some compilers never learn. */
printf(">>>> Match against: ");
pchars(start_match, end_subject - start_match, TRUE, md);
printf("\n");
#endif
/* OK, we can now run the match. If "hitend" is set afterwards, remember the
first starting point for which a partial match was found. */
md->start_match_ptr = start_match;
md->start_used_ptr = start_match;
md->match_call_count = 0;
md->match_function_type = 0;
md->end_offset_top = 0;
md->skip_arg_count = 0;
rc = match(start_match, md->start_code, start_match, 2, md, NULL, 0);
if (md->hitend && start_partial == NULL)
{
start_partial = md->start_used_ptr;
match_partial = start_match;
}
switch(rc)
{
/* If MATCH_SKIP_ARG reaches this level it means that a MARK that matched
the SKIP's arg was not found. In this circumstance, Perl ignores the SKIP
entirely. The only way we can do that is to re-do the match at the same
point, with a flag to force SKIP with an argument to be ignored. Just
treating this case as NOMATCH does not work because it does not check other
alternatives in patterns such as A(*SKIP:A)B|AC when the subject is AC. */
case MATCH_SKIP_ARG:
new_start_match = start_match;
md->ignore_skip_arg = md->skip_arg_count;
break;
/* SKIP passes back the next starting point explicitly, but if it is no
greater than the match we have just done, treat it as NOMATCH. */
case MATCH_SKIP:
if (md->start_match_ptr > start_match)
{
new_start_match = md->start_match_ptr;
break;
}
/* Fall through */
/* NOMATCH and PRUNE advance by one character. THEN at this level acts
exactly like PRUNE. Unset ignore SKIP-with-argument. */
case MATCH_NOMATCH:
case MATCH_PRUNE:
case MATCH_THEN:
md->ignore_skip_arg = 0;
new_start_match = start_match + 1;
#ifdef SUPPORT_UTF
if (utf)
ACROSSCHAR(new_start_match < end_subject, *new_start_match,
new_start_match++);
#endif
break;
/* COMMIT disables the bumpalong, but otherwise behaves as NOMATCH. */
case MATCH_COMMIT:
rc = MATCH_NOMATCH;
goto ENDLOOP;
/* Any other return is either a match, or some kind of error. */
default:
goto ENDLOOP;
}
/* Control reaches here for the various types of "no match at this point"
result. Reset the code to MATCH_NOMATCH for subsequent checking. */
rc = MATCH_NOMATCH;
/* If PCRE_FIRSTLINE is set, the match must happen before or at the first
newline in the subject (though it may continue over the newline). Therefore,
if we have just failed to match, starting at a newline, do not continue. */
if (firstline && IS_NEWLINE(start_match)) break;
/* Advance to new matching position */
start_match = new_start_match;
/* Break the loop if the pattern is anchored or if we have passed the end of
the subject. */
if (anchored || start_match > end_subject) break;
/* If we have just passed a CR and we are now at a LF, and the pattern does
not contain any explicit matches for \r or \n, and the newline option is CRLF
or ANY or ANYCRLF, advance the match position by one more character. In
normal matching start_match will aways be greater than the first position at
this stage, but a failed *SKIP can cause a return at the same point, which is
why the first test exists. */
if (start_match > (PCRE_PUCHAR)subject + start_offset &&
start_match[-1] == CHAR_CR &&
start_match < end_subject &&
*start_match == CHAR_NL &&
(re->flags & PCRE_HASCRORLF) == 0 &&
(md->nltype == NLTYPE_ANY ||
md->nltype == NLTYPE_ANYCRLF ||
md->nllen == 2))
start_match++;
md->mark = NULL; /* Reset for start of next match attempt */
} /* End of for(;;) "bumpalong" loop */
/* ==========================================================================*/
/* We reach here when rc is not MATCH_NOMATCH, or if one of the stopping
conditions is true:
(1) The pattern is anchored or the match was failed by (*COMMIT);
(2) We are past the end of the subject;
(3) PCRE_FIRSTLINE is set and we have failed to match at a newline, because
this option requests that a match occur at or before the first newline in
the subject.
When we have a match and the offset vector is big enough to deal with any
backreferences, captured substring offsets will already be set up. In the case
where we had to get some local store to hold offsets for backreference
processing, copy those that we can. In this case there need not be overflow if
certain parts of the pattern were not used, even though there are more
capturing parentheses than vector slots. */
ENDLOOP:
if (rc == MATCH_MATCH || rc == MATCH_ACCEPT)
{
if (using_temporary_offsets)
{
if (arg_offset_max >= 4)
{
memcpy(offsets + 2, md->offset_vector + 2,
(arg_offset_max - 2) * sizeof(int));
DPRINTF(("Copied offsets from temporary memory\n"));
}
if (md->end_offset_top > arg_offset_max) md->capture_last |= OVFLBIT;
DPRINTF(("Freeing temporary memory\n"));
(PUBL(free))(md->offset_vector);
}
/* Set the return code to the number of captured strings, or 0 if there were
too many to fit into the vector. */
rc = ((md->capture_last & OVFLBIT) != 0 &&
md->end_offset_top >= arg_offset_max)?
0 : md->end_offset_top/2;
/* If there is space in the offset vector, set any unused pairs at the end of
the pattern to -1 for backwards compatibility. It is documented that this
happens. In earlier versions, the whole set of potential capturing offsets
was set to -1 each time round the loop, but this is handled differently now.
"Gaps" are set to -1 dynamically instead (this fixes a bug). Thus, it is only
those at the end that need unsetting here. We can't just unset them all at
the start of the whole thing because they may get set in one branch that is
not the final matching branch. */
if (md->end_offset_top/2 <= re->top_bracket && offsets != NULL)
{
register int *iptr, *iend;
int resetcount = 2 + re->top_bracket * 2;
if (resetcount > offsetcount) resetcount = offsetcount;
iptr = offsets + md->end_offset_top;
iend = offsets + resetcount;
while (iptr < iend) *iptr++ = -1;
}
/* If there is space, set up the whole thing as substring 0. The value of
md->start_match_ptr might be modified if \K was encountered on the success
matching path. */
if (offsetcount < 2) rc = 0; else
{
offsets[0] = (int)(md->start_match_ptr - md->start_subject);
offsets[1] = (int)(md->end_match_ptr - md->start_subject);
}
/* Return MARK data if requested */
if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_MARK) != 0)
*(extra_data->mark) = (pcre_uchar *)md->mark;
DPRINTF((">>>> returning %d\n", rc));
#ifdef NO_RECURSE
release_match_heapframes(&frame_zero);
#endif
return rc;
}
/* Control gets here if there has been an error, or if the overall match
attempt has failed at all permitted starting positions. */
if (using_temporary_offsets)
{
DPRINTF(("Freeing temporary memory\n"));
(PUBL(free))(md->offset_vector);
}
/* For anything other than nomatch or partial match, just return the code. */
if (rc != MATCH_NOMATCH && rc != PCRE_ERROR_PARTIAL)
{
DPRINTF((">>>> error: returning %d\n", rc));
#ifdef NO_RECURSE
release_match_heapframes(&frame_zero);
#endif
return rc;
}
/* Handle partial matches - disable any mark data */
if (match_partial != NULL)
{
DPRINTF((">>>> returning PCRE_ERROR_PARTIAL\n"));
md->mark = NULL;
if (offsetcount > 1)
{
offsets[0] = (int)(start_partial - (PCRE_PUCHAR)subject);
offsets[1] = (int)(end_subject - (PCRE_PUCHAR)subject);
if (offsetcount > 2)
offsets[2] = (int)(match_partial - (PCRE_PUCHAR)subject);
}
rc = PCRE_ERROR_PARTIAL;
}
/* This is the classic nomatch case */
else
{
DPRINTF((">>>> returning PCRE_ERROR_NOMATCH\n"));
rc = PCRE_ERROR_NOMATCH;
}
/* Return the MARK data if it has been requested. */
if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_MARK) != 0)
*(extra_data->mark) = (pcre_uchar *)md->nomatch_mark;
#ifdef NO_RECURSE
release_match_heapframes(&frame_zero);
#endif
return rc;
}
/* End of pcre_exec.c */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_byte_order.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2014 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains an internal function that tests a compiled pattern to
see if it was compiled with the opposite endianness. If so, it uses an
auxiliary local function to flip the appropriate bytes. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
/*************************************************
* Swap byte functions *
*************************************************/
/* The following functions swap the bytes of a pcre_uint16
and pcre_uint32 value.
Arguments:
value any number
Returns: the byte swapped value
*/
static pcre_uint32
swap_uint32(pcre_uint32 value)
{
return ((value & 0x000000ff) << 24) |
((value & 0x0000ff00) << 8) |
((value & 0x00ff0000) >> 8) |
(value >> 24);
}
static pcre_uint16
swap_uint16(pcre_uint16 value)
{
return (value >> 8) | (value << 8);
}
/*************************************************
* Test for a byte-flipped compiled regex *
*************************************************/
/* This function swaps the bytes of a compiled pattern usually
loaded form the disk. It also sets the tables pointer, which
is likely an invalid pointer after reload.
Arguments:
argument_re points to the compiled expression
extra_data points to extra data or is NULL
tables points to the character tables or NULL
Returns: 0 if the swap is successful, negative on error
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DECL int pcre_pattern_to_host_byte_order(pcre *argument_re,
pcre_extra *extra_data, const unsigned char *tables)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL int pcre16_pattern_to_host_byte_order(pcre16 *argument_re,
pcre16_extra *extra_data, const unsigned char *tables)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL int pcre32_pattern_to_host_byte_order(pcre32 *argument_re,
pcre32_extra *extra_data, const unsigned char *tables)
#endif
{
REAL_PCRE *re = (REAL_PCRE *)argument_re;
pcre_study_data *study;
#ifndef COMPILE_PCRE8
pcre_uchar *ptr;
int length;
#if defined SUPPORT_UTF && defined COMPILE_PCRE16
BOOL utf;
BOOL utf16_char;
#endif /* SUPPORT_UTF && COMPILE_PCRE16 */
#endif /* !COMPILE_PCRE8 */
if (re == NULL) return PCRE_ERROR_NULL;
if (re->magic_number == MAGIC_NUMBER)
{
if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
re->tables = tables;
return 0;
}
if (re->magic_number != REVERSED_MAGIC_NUMBER) return PCRE_ERROR_BADMAGIC;
if ((swap_uint32(re->flags) & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
re->magic_number = MAGIC_NUMBER;
re->size = swap_uint32(re->size);
re->options = swap_uint32(re->options);
re->flags = swap_uint32(re->flags);
re->limit_match = swap_uint32(re->limit_match);
re->limit_recursion = swap_uint32(re->limit_recursion);
#if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
re->first_char = swap_uint16(re->first_char);
re->req_char = swap_uint16(re->req_char);
#elif defined COMPILE_PCRE32
re->first_char = swap_uint32(re->first_char);
re->req_char = swap_uint32(re->req_char);
#endif
re->max_lookbehind = swap_uint16(re->max_lookbehind);
re->top_bracket = swap_uint16(re->top_bracket);
re->top_backref = swap_uint16(re->top_backref);
re->name_table_offset = swap_uint16(re->name_table_offset);
re->name_entry_size = swap_uint16(re->name_entry_size);
re->name_count = swap_uint16(re->name_count);
re->ref_count = swap_uint16(re->ref_count);
re->tables = tables;
if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_STUDY_DATA) != 0)
{
study = (pcre_study_data *)extra_data->study_data;
study->size = swap_uint32(study->size);
study->flags = swap_uint32(study->flags);
study->minlength = swap_uint32(study->minlength);
}
#ifndef COMPILE_PCRE8
ptr = (pcre_uchar *)re + re->name_table_offset;
length = re->name_count * re->name_entry_size;
#if defined SUPPORT_UTF && defined COMPILE_PCRE16
utf = (re->options & PCRE_UTF16) != 0;
utf16_char = FALSE;
#endif /* SUPPORT_UTF && COMPILE_PCRE16 */
while(TRUE)
{
/* Swap previous characters. */
while (length-- > 0)
{
#if defined COMPILE_PCRE16
*ptr = swap_uint16(*ptr);
#elif defined COMPILE_PCRE32
*ptr = swap_uint32(*ptr);
#endif
ptr++;
}
#if defined SUPPORT_UTF && defined COMPILE_PCRE16
if (utf16_char)
{
if (HAS_EXTRALEN(ptr[-1]))
{
/* We know that there is only one extra character in UTF-16. */
*ptr = swap_uint16(*ptr);
ptr++;
}
}
utf16_char = FALSE;
#endif /* SUPPORT_UTF */
/* Get next opcode. */
length = 0;
#if defined COMPILE_PCRE16
*ptr = swap_uint16(*ptr);
#elif defined COMPILE_PCRE32
*ptr = swap_uint32(*ptr);
#endif
switch (*ptr)
{
case OP_END:
return 0;
#if defined SUPPORT_UTF && defined COMPILE_PCRE16
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
case OP_STAR:
case OP_MINSTAR:
case OP_PLUS:
case OP_MINPLUS:
case OP_QUERY:
case OP_MINQUERY:
case OP_UPTO:
case OP_MINUPTO:
case OP_EXACT:
case OP_POSSTAR:
case OP_POSPLUS:
case OP_POSQUERY:
case OP_POSUPTO:
case OP_STARI:
case OP_MINSTARI:
case OP_PLUSI:
case OP_MINPLUSI:
case OP_QUERYI:
case OP_MINQUERYI:
case OP_UPTOI:
case OP_MINUPTOI:
case OP_EXACTI:
case OP_POSSTARI:
case OP_POSPLUSI:
case OP_POSQUERYI:
case OP_POSUPTOI:
case OP_NOTSTAR:
case OP_NOTMINSTAR:
case OP_NOTPLUS:
case OP_NOTMINPLUS:
case OP_NOTQUERY:
case OP_NOTMINQUERY:
case OP_NOTUPTO:
case OP_NOTMINUPTO:
case OP_NOTEXACT:
case OP_NOTPOSSTAR:
case OP_NOTPOSPLUS:
case OP_NOTPOSQUERY:
case OP_NOTPOSUPTO:
case OP_NOTSTARI:
case OP_NOTMINSTARI:
case OP_NOTPLUSI:
case OP_NOTMINPLUSI:
case OP_NOTQUERYI:
case OP_NOTMINQUERYI:
case OP_NOTUPTOI:
case OP_NOTMINUPTOI:
case OP_NOTEXACTI:
case OP_NOTPOSSTARI:
case OP_NOTPOSPLUSI:
case OP_NOTPOSQUERYI:
case OP_NOTPOSUPTOI:
if (utf) utf16_char = TRUE;
#endif
/* Fall through. */
default:
length = PRIV(OP_lengths)[*ptr] - 1;
break;
case OP_CLASS:
case OP_NCLASS:
/* Skip the character bit map. */
ptr += 32/sizeof(pcre_uchar);
length = 0;
break;
case OP_XCLASS:
/* Reverse the size of the XCLASS instance. */
ptr++;
#if defined COMPILE_PCRE16
*ptr = swap_uint16(*ptr);
#elif defined COMPILE_PCRE32
*ptr = swap_uint32(*ptr);
#endif
#ifndef COMPILE_PCRE32
if (LINK_SIZE > 1)
{
/* LINK_SIZE can be 1 or 2 in 16 bit mode. */
ptr++;
*ptr = swap_uint16(*ptr);
}
#endif
ptr++;
length = (GET(ptr, -LINK_SIZE)) - (1 + LINK_SIZE + 1);
#if defined COMPILE_PCRE16
*ptr = swap_uint16(*ptr);
#elif defined COMPILE_PCRE32
*ptr = swap_uint32(*ptr);
#endif
if ((*ptr & XCL_MAP) != 0)
{
/* Skip the character bit map. */
ptr += 32/sizeof(pcre_uchar);
length -= 32/sizeof(pcre_uchar);
}
break;
}
ptr++;
}
/* Control should never reach here in 16/32 bit mode. */
#else /* In 8-bit mode, the pattern does not need to be processed. */
return 0;
#endif /* !COMPILE_PCRE8 */
}
/* End of pcre_byte_order.c */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_jit_compile.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2013 University of Cambridge
The machine code generator part (this module) was written by Zoltan Herczeg
Copyright (c) 2010-2013
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
#if defined SUPPORT_JIT
/* All-in-one: Since we use the JIT compiler only from here,
we just include it. This way we don't need to touch the build
system files. */
#define SLJIT_MALLOC(size, allocator_data) (PUBL(malloc))(size)
#define SLJIT_FREE(ptr, allocator_data) (PUBL(free))(ptr)
#define SLJIT_CONFIG_AUTO 1
#define SLJIT_CONFIG_STATIC 1
#define SLJIT_VERBOSE 0
#define SLJIT_DEBUG 0
#include "sljit/sljitLir.c"
#if defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED
#error Unsupported architecture
#endif
/* Defines for debugging purposes. */
/* 1 - Use unoptimized capturing brackets.
2 - Enable capture_last_ptr (includes option 1). */
/* #define DEBUG_FORCE_UNOPTIMIZED_CBRAS 2 */
/* 1 - Always have a control head. */
/* #define DEBUG_FORCE_CONTROL_HEAD 1 */
/* Allocate memory for the regex stack on the real machine stack.
Fast, but limited size. */
#define MACHINE_STACK_SIZE 32768
/* Growth rate for stack allocated by the OS. Should be the multiply
of page size. */
#define STACK_GROWTH_RATE 8192
/* Enable to check that the allocation could destroy temporaries. */
#if defined SLJIT_DEBUG && SLJIT_DEBUG
#define DESTROY_REGISTERS 1
#endif
/*
Short summary about the backtracking mechanism empolyed by the jit code generator:
The code generator follows the recursive nature of the PERL compatible regular
expressions. The basic blocks of regular expressions are condition checkers
whose execute different commands depending on the result of the condition check.
The relationship between the operators can be horizontal (concatenation) and
vertical (sub-expression) (See struct backtrack_common for more details).
'ab' - 'a' and 'b' regexps are concatenated
'a+' - 'a' is the sub-expression of the '+' operator
The condition checkers are boolean (true/false) checkers. Machine code is generated
for the checker itself and for the actions depending on the result of the checker.
The 'true' case is called as the matching path (expected path), and the other is called as
the 'backtrack' path. Branch instructions are expesive for all CPUs, so we avoid taken
branches on the matching path.
Greedy star operator (*) :
Matching path: match happens.
Backtrack path: match failed.
Non-greedy star operator (*?) :
Matching path: no need to perform a match.
Backtrack path: match is required.
The following example shows how the code generated for a capturing bracket
with two alternatives. Let A, B, C, D are arbirary regular expressions, and
we have the following regular expression:
A(B|C)D
The generated code will be the following:
A matching path
'(' matching path (pushing arguments to the stack)
B matching path
')' matching path (pushing arguments to the stack)
D matching path
return with successful match
D backtrack path
')' backtrack path (If we arrived from "C" jump to the backtrack of "C")
B backtrack path
C expected path
jump to D matching path
C backtrack path
A backtrack path
Notice, that the order of backtrack code paths are the opposite of the fast
code paths. In this way the topmost value on the stack is always belong
to the current backtrack code path. The backtrack path must check
whether there is a next alternative. If so, it needs to jump back to
the matching path eventually. Otherwise it needs to clear out its own stack
frame and continue the execution on the backtrack code paths.
*/
/*
Saved stack frames:
Atomic blocks and asserts require reloading the values of private data
when the backtrack mechanism performed. Because of OP_RECURSE, the data
are not necessarly known in compile time, thus we need a dynamic restore
mechanism.
The stack frames are stored in a chain list, and have the following format:
([ capturing bracket offset ][ start value ][ end value ])+ ... [ 0 ] [ previous head ]
Thus we can restore the private data to a particular point in the stack.
*/
typedef struct jit_arguments {
/* Pointers first. */
struct sljit_stack *stack;
const pcre_uchar *str;
const pcre_uchar *begin;
const pcre_uchar *end;
int *offsets;
pcre_uchar *mark_ptr;
void *callout_data;
/* Everything else after. */
sljit_u32 limit_match;
int real_offset_count;
int offset_count;
sljit_u8 notbol;
sljit_u8 noteol;
sljit_u8 notempty;
sljit_u8 notempty_atstart;
} jit_arguments;
typedef struct executable_functions {
void *executable_funcs[JIT_NUMBER_OF_COMPILE_MODES];
void *read_only_data_heads[JIT_NUMBER_OF_COMPILE_MODES];
sljit_uw executable_sizes[JIT_NUMBER_OF_COMPILE_MODES];
PUBL(jit_callback) callback;
void *userdata;
sljit_u32 top_bracket;
sljit_u32 limit_match;
} executable_functions;
typedef struct jump_list {
struct sljit_jump *jump;
struct jump_list *next;
} jump_list;
typedef struct stub_list {
struct sljit_jump *start;
struct sljit_label *quit;
struct stub_list *next;
} stub_list;
typedef struct label_addr_list {
struct sljit_label *label;
sljit_uw *update_addr;
struct label_addr_list *next;
} label_addr_list;
enum frame_types {
no_frame = -1,
no_stack = -2
};
enum control_types {
type_mark = 0,
type_then_trap = 1
};
typedef int (SLJIT_FUNC *jit_function)(jit_arguments *args);
/* The following structure is the key data type for the recursive
code generator. It is allocated by compile_matchingpath, and contains
the arguments for compile_backtrackingpath. Must be the first member
of its descendants. */
typedef struct backtrack_common {
/* Concatenation stack. */
struct backtrack_common *prev;
jump_list *nextbacktracks;
/* Internal stack (for component operators). */
struct backtrack_common *top;
jump_list *topbacktracks;
/* Opcode pointer. */
pcre_uchar *cc;
} backtrack_common;
typedef struct assert_backtrack {
backtrack_common common;
jump_list *condfailed;
/* Less than 0 if a frame is not needed. */
int framesize;
/* Points to our private memory word on the stack. */
int private_data_ptr;
/* For iterators. */
struct sljit_label *matchingpath;
} assert_backtrack;
typedef struct bracket_backtrack {
backtrack_common common;
/* Where to coninue if an alternative is successfully matched. */
struct sljit_label *alternative_matchingpath;
/* For rmin and rmax iterators. */
struct sljit_label *recursive_matchingpath;
/* For greedy ? operator. */
struct sljit_label *zero_matchingpath;
/* Contains the branches of a failed condition. */
union {
/* Both for OP_COND, OP_SCOND. */
jump_list *condfailed;
assert_backtrack *assert;
/* For OP_ONCE. Less than 0 if not needed. */
int framesize;
} u;
/* Points to our private memory word on the stack. */
int private_data_ptr;
} bracket_backtrack;
typedef struct bracketpos_backtrack {
backtrack_common common;
/* Points to our private memory word on the stack. */
int private_data_ptr;
/* Reverting stack is needed. */
int framesize;
/* Allocated stack size. */
int stacksize;
} bracketpos_backtrack;
typedef struct braminzero_backtrack {
backtrack_common common;
struct sljit_label *matchingpath;
} braminzero_backtrack;
typedef struct char_iterator_backtrack {
backtrack_common common;
/* Next iteration. */
struct sljit_label *matchingpath;
union {
jump_list *backtracks;
struct {
unsigned int othercasebit;
pcre_uchar chr;
BOOL enabled;
} charpos;
} u;
} char_iterator_backtrack;
typedef struct ref_iterator_backtrack {
backtrack_common common;
/* Next iteration. */
struct sljit_label *matchingpath;
} ref_iterator_backtrack;
typedef struct recurse_entry {
struct recurse_entry *next;
/* Contains the function entry. */
struct sljit_label *entry;
/* Collects the calls until the function is not created. */
jump_list *calls;
/* Points to the starting opcode. */
sljit_sw start;
} recurse_entry;
typedef struct recurse_backtrack {
backtrack_common common;
BOOL inlined_pattern;
} recurse_backtrack;
#define OP_THEN_TRAP OP_TABLE_LENGTH
typedef struct then_trap_backtrack {
backtrack_common common;
/* If then_trap is not NULL, this structure contains the real
then_trap for the backtracking path. */
struct then_trap_backtrack *then_trap;
/* Points to the starting opcode. */
sljit_sw start;
/* Exit point for the then opcodes of this alternative. */
jump_list *quit;
/* Frame size of the current alternative. */
int framesize;
} then_trap_backtrack;
#define MAX_RANGE_SIZE 4
typedef struct compiler_common {
/* The sljit ceneric compiler. */
struct sljit_compiler *compiler;
/* First byte code. */
pcre_uchar *start;
/* Maps private data offset to each opcode. */
sljit_s32 *private_data_ptrs;
/* Chain list of read-only data ptrs. */
void *read_only_data_head;
/* Tells whether the capturing bracket is optimized. */
sljit_u8 *optimized_cbracket;
/* Tells whether the starting offset is a target of then. */
sljit_u8 *then_offsets;
/* Current position where a THEN must jump. */
then_trap_backtrack *then_trap;
/* Starting offset of private data for capturing brackets. */
sljit_s32 cbra_ptr;
/* Output vector starting point. Must be divisible by 2. */
sljit_s32 ovector_start;
/* Points to the starting character of the current match. */
sljit_s32 start_ptr;
/* Last known position of the requested byte. */
sljit_s32 req_char_ptr;
/* Head of the last recursion. */
sljit_s32 recursive_head_ptr;
/* First inspected character for partial matching.
(Needed for avoiding zero length partial matches.) */
sljit_s32 start_used_ptr;
/* Starting pointer for partial soft matches. */
sljit_s32 hit_start;
/* Pointer of the match end position. */
sljit_s32 match_end_ptr;
/* Points to the marked string. */
sljit_s32 mark_ptr;
/* Recursive control verb management chain. */
sljit_s32 control_head_ptr;
/* Points to the last matched capture block index. */
sljit_s32 capture_last_ptr;
/* Fast forward skipping byte code pointer. */
pcre_uchar *fast_forward_bc_ptr;
/* Locals used by fast fail optimization. */
sljit_s32 fast_fail_start_ptr;
sljit_s32 fast_fail_end_ptr;
/* Flipped and lower case tables. */
const sljit_u8 *fcc;
sljit_sw lcc;
/* Mode can be PCRE_STUDY_JIT_COMPILE and others. */
int mode;
/* TRUE, when minlength is greater than 0. */
BOOL might_be_empty;
/* \K is found in the pattern. */
BOOL has_set_som;
/* (*SKIP:arg) is found in the pattern. */
BOOL has_skip_arg;
/* (*THEN) is found in the pattern. */
BOOL has_then;
/* (*SKIP) or (*SKIP:arg) is found in lookbehind assertion. */
BOOL has_skip_in_assert_back;
/* Currently in recurse or negative assert. */
BOOL local_exit;
/* Currently in a positive assert. */
BOOL positive_assert;
/* Newline control. */
int nltype;
sljit_u32 nlmax;
sljit_u32 nlmin;
int newline;
int bsr_nltype;
sljit_u32 bsr_nlmax;
sljit_u32 bsr_nlmin;
/* Dollar endonly. */
int endonly;
/* Tables. */
sljit_sw ctypes;
/* Named capturing brackets. */
pcre_uchar *name_table;
sljit_sw name_count;
sljit_sw name_entry_size;
/* Labels and jump lists. */
struct sljit_label *partialmatchlabel;
struct sljit_label *quit_label;
struct sljit_label *forced_quit_label;
struct sljit_label *accept_label;
struct sljit_label *ff_newline_shortcut;
stub_list *stubs;
label_addr_list *label_addrs;
recurse_entry *entries;
recurse_entry *currententry;
jump_list *partialmatch;
jump_list *quit;
jump_list *positive_assert_quit;
jump_list *forced_quit;
jump_list *accept;
jump_list *calllimit;
jump_list *stackalloc;
jump_list *revertframes;
jump_list *wordboundary;
jump_list *anynewline;
jump_list *hspace;
jump_list *vspace;
jump_list *casefulcmp;
jump_list *caselesscmp;
jump_list *reset_match;
BOOL jscript_compat;
#ifdef SUPPORT_UTF
BOOL utf;
#ifdef SUPPORT_UCP
BOOL use_ucp;
jump_list *getucd;
#endif
#ifdef COMPILE_PCRE8
jump_list *utfreadchar;
jump_list *utfreadchar16;
jump_list *utfreadtype8;
#endif
#endif /* SUPPORT_UTF */
} compiler_common;
/* For byte_sequence_compare. */
typedef struct compare_context {
int length;
int sourcereg;
#if defined SLJIT_UNALIGNED && SLJIT_UNALIGNED
int ucharptr;
union {
sljit_s32 asint;
sljit_u16 asushort;
#if defined COMPILE_PCRE8
sljit_u8 asbyte;
sljit_u8 asuchars[4];
#elif defined COMPILE_PCRE16
sljit_u16 asuchars[2];
#elif defined COMPILE_PCRE32
sljit_u32 asuchars[1];
#endif
} c;
union {
sljit_s32 asint;
sljit_u16 asushort;
#if defined COMPILE_PCRE8
sljit_u8 asbyte;
sljit_u8 asuchars[4];
#elif defined COMPILE_PCRE16
sljit_u16 asuchars[2];
#elif defined COMPILE_PCRE32
sljit_u32 asuchars[1];
#endif
} oc;
#endif
} compare_context;
/* Undefine sljit macros. */
#undef CMP
/* Used for accessing the elements of the stack. */
#define STACK(i) ((i) * (int)sizeof(sljit_sw))
#ifdef SLJIT_PREF_SHIFT_REG
#if SLJIT_PREF_SHIFT_REG == SLJIT_R2
/* Nothing. */
#elif SLJIT_PREF_SHIFT_REG == SLJIT_R3
#define SHIFT_REG_IS_R3
#else
#error "Unsupported shift register"
#endif
#endif
#define TMP1 SLJIT_R0
#ifdef SHIFT_REG_IS_R3
#define TMP2 SLJIT_R3
#define TMP3 SLJIT_R2
#else
#define TMP2 SLJIT_R2
#define TMP3 SLJIT_R3
#endif
#define STR_PTR SLJIT_S0
#define STR_END SLJIT_S1
#define STACK_TOP SLJIT_R1
#define STACK_LIMIT SLJIT_S2
#define COUNT_MATCH SLJIT_S3
#define ARGUMENTS SLJIT_S4
#define RETURN_ADDR SLJIT_R4
/* Local space layout. */
/* These two locals can be used by the current opcode. */
#define LOCALS0 (0 * sizeof(sljit_sw))
#define LOCALS1 (1 * sizeof(sljit_sw))
/* Two local variables for possessive quantifiers (char1 cannot use them). */
#define POSSESSIVE0 (2 * sizeof(sljit_sw))
#define POSSESSIVE1 (3 * sizeof(sljit_sw))
/* Max limit of recursions. */
#define LIMIT_MATCH (4 * sizeof(sljit_sw))
/* The output vector is stored on the stack, and contains pointers
to characters. The vector data is divided into two groups: the first
group contains the start / end character pointers, and the second is
the start pointers when the end of the capturing group has not yet reached. */
#define OVECTOR_START (common->ovector_start)
#define OVECTOR(i) (OVECTOR_START + (i) * (sljit_sw)sizeof(sljit_sw))
#define OVECTOR_PRIV(i) (common->cbra_ptr + (i) * (sljit_sw)sizeof(sljit_sw))
#define PRIVATE_DATA(cc) (common->private_data_ptrs[(cc) - common->start])
#if defined COMPILE_PCRE8
#define MOV_UCHAR SLJIT_MOV_U8
#elif defined COMPILE_PCRE16
#define MOV_UCHAR SLJIT_MOV_U16
#elif defined COMPILE_PCRE32
#define MOV_UCHAR SLJIT_MOV_U32
#else
#error Unsupported compiling mode
#endif
/* Shortcuts. */
#define DEFINE_COMPILER \
struct sljit_compiler *compiler = common->compiler
#define OP1(op, dst, dstw, src, srcw) \
sljit_emit_op1(compiler, (op), (dst), (dstw), (src), (srcw))
#define OP2(op, dst, dstw, src1, src1w, src2, src2w) \
sljit_emit_op2(compiler, (op), (dst), (dstw), (src1), (src1w), (src2), (src2w))
#define LABEL() \
sljit_emit_label(compiler)
#define JUMP(type) \
sljit_emit_jump(compiler, (type))
#define JUMPTO(type, label) \
sljit_set_label(sljit_emit_jump(compiler, (type)), (label))
#define JUMPHERE(jump) \
sljit_set_label((jump), sljit_emit_label(compiler))
#define SET_LABEL(jump, label) \
sljit_set_label((jump), (label))
#define CMP(type, src1, src1w, src2, src2w) \
sljit_emit_cmp(compiler, (type), (src1), (src1w), (src2), (src2w))
#define CMPTO(type, src1, src1w, src2, src2w, label) \
sljit_set_label(sljit_emit_cmp(compiler, (type), (src1), (src1w), (src2), (src2w)), (label))
#define OP_FLAGS(op, dst, dstw, type) \
sljit_emit_op_flags(compiler, (op), (dst), (dstw), (type))
#define GET_LOCAL_BASE(dst, dstw, offset) \
sljit_get_local_base(compiler, (dst), (dstw), (offset))
#define READ_CHAR_MAX 0x7fffffff
#define INVALID_UTF_CHAR 888
static pcre_uchar *bracketend(pcre_uchar *cc)
{
SLJIT_ASSERT((*cc >= OP_ASSERT && *cc <= OP_ASSERTBACK_NOT) || (*cc >= OP_ONCE && *cc <= OP_SCOND));
do cc += GET(cc, 1); while (*cc == OP_ALT);
SLJIT_ASSERT(*cc >= OP_KET && *cc <= OP_KETRPOS);
cc += 1 + LINK_SIZE;
return cc;
}
static int no_alternatives(pcre_uchar *cc)
{
int count = 0;
SLJIT_ASSERT((*cc >= OP_ASSERT && *cc <= OP_ASSERTBACK_NOT) || (*cc >= OP_ONCE && *cc <= OP_SCOND));
do
{
cc += GET(cc, 1);
count++;
}
while (*cc == OP_ALT);
SLJIT_ASSERT(*cc >= OP_KET && *cc <= OP_KETRPOS);
return count;
}
/* Functions whose might need modification for all new supported opcodes:
next_opcode
check_opcode_types
set_private_data_ptrs
get_framesize
init_frame
get_private_data_copy_length
copy_private_data
compile_matchingpath
compile_backtrackingpath
*/
static pcre_uchar *next_opcode(compiler_common *common, pcre_uchar *cc)
{
SLJIT_UNUSED_ARG(common);
switch(*cc)
{
case OP_SOD:
case OP_SOM:
case OP_SET_SOM:
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
case OP_NOT_DIGIT:
case OP_DIGIT:
case OP_NOT_WHITESPACE:
case OP_WHITESPACE:
case OP_NOT_WORDCHAR:
case OP_WORDCHAR:
case OP_ANY:
case OP_ALLANY:
case OP_NOTPROP:
case OP_PROP:
case OP_ANYNL:
case OP_NOT_HSPACE:
case OP_HSPACE:
case OP_NOT_VSPACE:
case OP_VSPACE:
case OP_EXTUNI:
case OP_EODN:
case OP_EOD:
case OP_CIRC:
case OP_CIRCM:
case OP_DOLL:
case OP_DOLLM:
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSSTAR:
case OP_CRPOSPLUS:
case OP_CRPOSQUERY:
case OP_CRPOSRANGE:
case OP_CLASS:
case OP_NCLASS:
case OP_REF:
case OP_REFI:
case OP_DNREF:
case OP_DNREFI:
case OP_RECURSE:
case OP_CALLOUT:
case OP_ALT:
case OP_KET:
case OP_KETRMAX:
case OP_KETRMIN:
case OP_KETRPOS:
case OP_REVERSE:
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
case OP_ONCE:
case OP_ONCE_NC:
case OP_BRA:
case OP_BRAPOS:
case OP_CBRA:
case OP_CBRAPOS:
case OP_COND:
case OP_SBRA:
case OP_SBRAPOS:
case OP_SCBRA:
case OP_SCBRAPOS:
case OP_SCOND:
case OP_CREF:
case OP_DNCREF:
case OP_RREF:
case OP_DNRREF:
case OP_DEF:
case OP_BRAZERO:
case OP_BRAMINZERO:
case OP_BRAPOSZERO:
case OP_PRUNE:
case OP_SKIP:
case OP_THEN:
case OP_COMMIT:
case OP_FAIL:
case OP_ACCEPT:
case OP_ASSERT_ACCEPT:
case OP_CLOSE:
case OP_SKIPZERO:
return cc + PRIV(OP_lengths)[*cc];
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
case OP_STAR:
case OP_MINSTAR:
case OP_PLUS:
case OP_MINPLUS:
case OP_QUERY:
case OP_MINQUERY:
case OP_UPTO:
case OP_MINUPTO:
case OP_EXACT:
case OP_POSSTAR:
case OP_POSPLUS:
case OP_POSQUERY:
case OP_POSUPTO:
case OP_STARI:
case OP_MINSTARI:
case OP_PLUSI:
case OP_MINPLUSI:
case OP_QUERYI:
case OP_MINQUERYI:
case OP_UPTOI:
case OP_MINUPTOI:
case OP_EXACTI:
case OP_POSSTARI:
case OP_POSPLUSI:
case OP_POSQUERYI:
case OP_POSUPTOI:
case OP_NOTSTAR:
case OP_NOTMINSTAR:
case OP_NOTPLUS:
case OP_NOTMINPLUS:
case OP_NOTQUERY:
case OP_NOTMINQUERY:
case OP_NOTUPTO:
case OP_NOTMINUPTO:
case OP_NOTEXACT:
case OP_NOTPOSSTAR:
case OP_NOTPOSPLUS:
case OP_NOTPOSQUERY:
case OP_NOTPOSUPTO:
case OP_NOTSTARI:
case OP_NOTMINSTARI:
case OP_NOTPLUSI:
case OP_NOTMINPLUSI:
case OP_NOTQUERYI:
case OP_NOTMINQUERYI:
case OP_NOTUPTOI:
case OP_NOTMINUPTOI:
case OP_NOTEXACTI:
case OP_NOTPOSSTARI:
case OP_NOTPOSPLUSI:
case OP_NOTPOSQUERYI:
case OP_NOTPOSUPTOI:
cc += PRIV(OP_lengths)[*cc];
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
return cc;
/* Special cases. */
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
case OP_TYPEEXACT:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSPLUS:
case OP_TYPEPOSQUERY:
case OP_TYPEPOSUPTO:
return cc + PRIV(OP_lengths)[*cc] - 1;
case OP_ANYBYTE:
#ifdef SUPPORT_UTF
if (common->utf) return NULL;
#endif
return cc + 1;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
return cc + GET(cc, 1);
#endif
case OP_MARK:
case OP_PRUNE_ARG:
case OP_SKIP_ARG:
case OP_THEN_ARG:
return cc + 1 + 2 + cc[1];
default:
/* All opcodes are supported now! */
SLJIT_UNREACHABLE();
return NULL;
}
}
static BOOL check_opcode_types(compiler_common *common, pcre_uchar *cc, pcre_uchar *ccend)
{
int count;
pcre_uchar *slot;
pcre_uchar *assert_back_end = cc - 1;
/* Calculate important variables (like stack size) and checks whether all opcodes are supported. */
while (cc < ccend)
{
switch(*cc)
{
case OP_SET_SOM:
common->has_set_som = TRUE;
common->might_be_empty = TRUE;
cc += 1;
break;
case OP_REF:
case OP_REFI:
common->optimized_cbracket[GET2(cc, 1)] = 0;
cc += 1 + IMM2_SIZE;
break;
case OP_CBRAPOS:
case OP_SCBRAPOS:
common->optimized_cbracket[GET2(cc, 1 + LINK_SIZE)] = 0;
cc += 1 + LINK_SIZE + IMM2_SIZE;
break;
case OP_COND:
case OP_SCOND:
/* Only AUTO_CALLOUT can insert this opcode. We do
not intend to support this case. */
if (cc[1 + LINK_SIZE] == OP_CALLOUT)
return FALSE;
cc += 1 + LINK_SIZE;
break;
case OP_CREF:
common->optimized_cbracket[GET2(cc, 1)] = 0;
cc += 1 + IMM2_SIZE;
break;
case OP_DNREF:
case OP_DNREFI:
case OP_DNCREF:
count = GET2(cc, 1 + IMM2_SIZE);
slot = common->name_table + GET2(cc, 1) * common->name_entry_size;
while (count-- > 0)
{
common->optimized_cbracket[GET2(slot, 0)] = 0;
slot += common->name_entry_size;
}
cc += 1 + 2 * IMM2_SIZE;
break;
case OP_RECURSE:
/* Set its value only once. */
if (common->recursive_head_ptr == 0)
{
common->recursive_head_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
}
cc += 1 + LINK_SIZE;
break;
case OP_CALLOUT:
if (common->capture_last_ptr == 0)
{
common->capture_last_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
}
cc += 2 + 2 * LINK_SIZE;
break;
case OP_ASSERTBACK:
slot = bracketend(cc);
if (slot > assert_back_end)
assert_back_end = slot;
cc += 1 + LINK_SIZE;
break;
case OP_THEN_ARG:
common->has_then = TRUE;
common->control_head_ptr = 1;
/* Fall through. */
case OP_PRUNE_ARG:
case OP_MARK:
if (common->mark_ptr == 0)
{
common->mark_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
}
cc += 1 + 2 + cc[1];
break;
case OP_THEN:
common->has_then = TRUE;
common->control_head_ptr = 1;
cc += 1;
break;
case OP_SKIP:
if (cc < assert_back_end)
common->has_skip_in_assert_back = TRUE;
cc += 1;
break;
case OP_SKIP_ARG:
common->control_head_ptr = 1;
common->has_skip_arg = TRUE;
if (cc < assert_back_end)
common->has_skip_in_assert_back = TRUE;
cc += 1 + 2 + cc[1];
break;
default:
cc = next_opcode(common, cc);
if (cc == NULL)
return FALSE;
break;
}
}
return TRUE;
}
static BOOL is_accelerated_repeat(pcre_uchar *cc)
{
switch(*cc)
{
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSPLUS:
return (cc[1] != OP_ANYNL && cc[1] != OP_EXTUNI);
case OP_STAR:
case OP_MINSTAR:
case OP_PLUS:
case OP_MINPLUS:
case OP_POSSTAR:
case OP_POSPLUS:
case OP_STARI:
case OP_MINSTARI:
case OP_PLUSI:
case OP_MINPLUSI:
case OP_POSSTARI:
case OP_POSPLUSI:
case OP_NOTSTAR:
case OP_NOTMINSTAR:
case OP_NOTPLUS:
case OP_NOTMINPLUS:
case OP_NOTPOSSTAR:
case OP_NOTPOSPLUS:
case OP_NOTSTARI:
case OP_NOTMINSTARI:
case OP_NOTPLUSI:
case OP_NOTMINPLUSI:
case OP_NOTPOSSTARI:
case OP_NOTPOSPLUSI:
return TRUE;
case OP_CLASS:
case OP_NCLASS:
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
cc += (*cc == OP_XCLASS) ? GET(cc, 1) : (int)(1 + (32 / sizeof(pcre_uchar)));
#else
cc += (1 + (32 / sizeof(pcre_uchar)));
#endif
switch(*cc)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRPOSSTAR:
case OP_CRPOSPLUS:
return TRUE;
}
break;
}
return FALSE;
}
static SLJIT_INLINE BOOL detect_fast_forward_skip(compiler_common *common, int *private_data_start)
{
pcre_uchar *cc = common->start;
pcre_uchar *end;
/* Skip not repeated brackets. */
while (TRUE)
{
switch(*cc)
{
case OP_SOD:
case OP_SOM:
case OP_SET_SOM:
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
case OP_EODN:
case OP_EOD:
case OP_CIRC:
case OP_CIRCM:
case OP_DOLL:
case OP_DOLLM:
/* Zero width assertions. */
cc++;
continue;
}
if (*cc != OP_BRA && *cc != OP_CBRA)
break;
end = cc + GET(cc, 1);
if (*end != OP_KET || PRIVATE_DATA(end) != 0)
return FALSE;
if (*cc == OP_CBRA)
{
if (common->optimized_cbracket[GET2(cc, 1 + LINK_SIZE)] == 0)
return FALSE;
cc += IMM2_SIZE;
}
cc += 1 + LINK_SIZE;
}
if (is_accelerated_repeat(cc))
{
common->fast_forward_bc_ptr = cc;
common->private_data_ptrs[(cc + 1) - common->start] = *private_data_start;
*private_data_start += sizeof(sljit_sw);
return TRUE;
}
return FALSE;
}
static SLJIT_INLINE void detect_fast_fail(compiler_common *common, pcre_uchar *cc, int *private_data_start, sljit_s32 depth)
{
pcre_uchar *next_alt;
SLJIT_ASSERT(*cc == OP_BRA || *cc == OP_CBRA);
if (*cc == OP_CBRA && common->optimized_cbracket[GET2(cc, 1 + LINK_SIZE)] == 0)
return;
next_alt = bracketend(cc) - (1 + LINK_SIZE);
if (*next_alt != OP_KET || PRIVATE_DATA(next_alt) != 0)
return;
do
{
next_alt = cc + GET(cc, 1);
cc += 1 + LINK_SIZE + ((*cc == OP_CBRA) ? IMM2_SIZE : 0);
while (TRUE)
{
switch(*cc)
{
case OP_SOD:
case OP_SOM:
case OP_SET_SOM:
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
case OP_EODN:
case OP_EOD:
case OP_CIRC:
case OP_CIRCM:
case OP_DOLL:
case OP_DOLLM:
/* Zero width assertions. */
cc++;
continue;
}
break;
}
if (depth > 0 && (*cc == OP_BRA || *cc == OP_CBRA))
detect_fast_fail(common, cc, private_data_start, depth - 1);
if (is_accelerated_repeat(cc))
{
common->private_data_ptrs[(cc + 1) - common->start] = *private_data_start;
if (common->fast_fail_start_ptr == 0)
common->fast_fail_start_ptr = *private_data_start;
*private_data_start += sizeof(sljit_sw);
common->fast_fail_end_ptr = *private_data_start;
if (*private_data_start > SLJIT_MAX_LOCAL_SIZE)
return;
}
cc = next_alt;
}
while (*cc == OP_ALT);
}
static int get_class_iterator_size(pcre_uchar *cc)
{
sljit_u32 min;
sljit_u32 max;
switch(*cc)
{
case OP_CRSTAR:
case OP_CRPLUS:
return 2;
case OP_CRMINSTAR:
case OP_CRMINPLUS:
case OP_CRQUERY:
case OP_CRMINQUERY:
return 1;
case OP_CRRANGE:
case OP_CRMINRANGE:
min = GET2(cc, 1);
max = GET2(cc, 1 + IMM2_SIZE);
if (max == 0)
return (*cc == OP_CRRANGE) ? 2 : 1;
max -= min;
if (max > 2)
max = 2;
return max;
default:
return 0;
}
}
static BOOL detect_repeat(compiler_common *common, pcre_uchar *begin)
{
pcre_uchar *end = bracketend(begin);
pcre_uchar *next;
pcre_uchar *next_end;
pcre_uchar *max_end;
pcre_uchar type;
sljit_sw length = end - begin;
int min, max, i;
/* Detect fixed iterations first. */
if (end[-(1 + LINK_SIZE)] != OP_KET)
return FALSE;
/* Already detected repeat. */
if (common->private_data_ptrs[end - common->start - LINK_SIZE] != 0)
return TRUE;
next = end;
min = 1;
while (1)
{
if (*next != *begin)
break;
next_end = bracketend(next);
if (next_end - next != length || memcmp(begin, next, IN_UCHARS(length)) != 0)
break;
next = next_end;
min++;
}
if (min == 2)
return FALSE;
max = 0;
max_end = next;
if (*next == OP_BRAZERO || *next == OP_BRAMINZERO)
{
type = *next;
while (1)
{
if (next[0] != type || next[1] != OP_BRA || next[2 + LINK_SIZE] != *begin)
break;
next_end = bracketend(next + 2 + LINK_SIZE);
if (next_end - next != (length + 2 + LINK_SIZE) || memcmp(begin, next + 2 + LINK_SIZE, IN_UCHARS(length)) != 0)
break;
next = next_end;
max++;
}
if (next[0] == type && next[1] == *begin && max >= 1)
{
next_end = bracketend(next + 1);
if (next_end - next == (length + 1) && memcmp(begin, next + 1, IN_UCHARS(length)) == 0)
{
for (i = 0; i < max; i++, next_end += 1 + LINK_SIZE)
if (*next_end != OP_KET)
break;
if (i == max)
{
common->private_data_ptrs[max_end - common->start - LINK_SIZE] = next_end - max_end;
common->private_data_ptrs[max_end - common->start - LINK_SIZE + 1] = (type == OP_BRAZERO) ? OP_UPTO : OP_MINUPTO;
/* +2 the original and the last. */
common->private_data_ptrs[max_end - common->start - LINK_SIZE + 2] = max + 2;
if (min == 1)
return TRUE;
min--;
max_end -= (1 + LINK_SIZE) + GET(max_end, -LINK_SIZE);
}
}
}
}
if (min >= 3)
{
common->private_data_ptrs[end - common->start - LINK_SIZE] = max_end - end;
common->private_data_ptrs[end - common->start - LINK_SIZE + 1] = OP_EXACT;
common->private_data_ptrs[end - common->start - LINK_SIZE + 2] = min;
return TRUE;
}
return FALSE;
}
#define CASE_ITERATOR_PRIVATE_DATA_1 \
case OP_MINSTAR: \
case OP_MINPLUS: \
case OP_QUERY: \
case OP_MINQUERY: \
case OP_MINSTARI: \
case OP_MINPLUSI: \
case OP_QUERYI: \
case OP_MINQUERYI: \
case OP_NOTMINSTAR: \
case OP_NOTMINPLUS: \
case OP_NOTQUERY: \
case OP_NOTMINQUERY: \
case OP_NOTMINSTARI: \
case OP_NOTMINPLUSI: \
case OP_NOTQUERYI: \
case OP_NOTMINQUERYI:
#define CASE_ITERATOR_PRIVATE_DATA_2A \
case OP_STAR: \
case OP_PLUS: \
case OP_STARI: \
case OP_PLUSI: \
case OP_NOTSTAR: \
case OP_NOTPLUS: \
case OP_NOTSTARI: \
case OP_NOTPLUSI:
#define CASE_ITERATOR_PRIVATE_DATA_2B \
case OP_UPTO: \
case OP_MINUPTO: \
case OP_UPTOI: \
case OP_MINUPTOI: \
case OP_NOTUPTO: \
case OP_NOTMINUPTO: \
case OP_NOTUPTOI: \
case OP_NOTMINUPTOI:
#define CASE_ITERATOR_TYPE_PRIVATE_DATA_1 \
case OP_TYPEMINSTAR: \
case OP_TYPEMINPLUS: \
case OP_TYPEQUERY: \
case OP_TYPEMINQUERY:
#define CASE_ITERATOR_TYPE_PRIVATE_DATA_2A \
case OP_TYPESTAR: \
case OP_TYPEPLUS:
#define CASE_ITERATOR_TYPE_PRIVATE_DATA_2B \
case OP_TYPEUPTO: \
case OP_TYPEMINUPTO:
static void set_private_data_ptrs(compiler_common *common, int *private_data_start, pcre_uchar *ccend)
{
pcre_uchar *cc = common->start;
pcre_uchar *alternative;
pcre_uchar *end = NULL;
int private_data_ptr = *private_data_start;
int space, size, bracketlen;
BOOL repeat_check = TRUE;
while (cc < ccend)
{
space = 0;
size = 0;
bracketlen = 0;
if (private_data_ptr > SLJIT_MAX_LOCAL_SIZE)
break;
if (repeat_check && (*cc == OP_ONCE || *cc == OP_ONCE_NC || *cc == OP_BRA || *cc == OP_CBRA || *cc == OP_COND))
{
if (detect_repeat(common, cc))
{
/* These brackets are converted to repeats, so no global
based single character repeat is allowed. */
if (cc >= end)
end = bracketend(cc);
}
}
repeat_check = TRUE;
switch(*cc)
{
case OP_KET:
if (common->private_data_ptrs[cc + 1 - common->start] != 0)
{
common->private_data_ptrs[cc - common->start] = private_data_ptr;
private_data_ptr += sizeof(sljit_sw);
cc += common->private_data_ptrs[cc + 1 - common->start];
}
cc += 1 + LINK_SIZE;
break;
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
case OP_ONCE:
case OP_ONCE_NC:
case OP_BRAPOS:
case OP_SBRA:
case OP_SBRAPOS:
case OP_SCOND:
common->private_data_ptrs[cc - common->start] = private_data_ptr;
private_data_ptr += sizeof(sljit_sw);
bracketlen = 1 + LINK_SIZE;
break;
case OP_CBRAPOS:
case OP_SCBRAPOS:
common->private_data_ptrs[cc - common->start] = private_data_ptr;
private_data_ptr += sizeof(sljit_sw);
bracketlen = 1 + LINK_SIZE + IMM2_SIZE;
break;
case OP_COND:
/* Might be a hidden SCOND. */
alternative = cc + GET(cc, 1);
if (*alternative == OP_KETRMAX || *alternative == OP_KETRMIN)
{
common->private_data_ptrs[cc - common->start] = private_data_ptr;
private_data_ptr += sizeof(sljit_sw);
}
bracketlen = 1 + LINK_SIZE;
break;
case OP_BRA:
bracketlen = 1 + LINK_SIZE;
break;
case OP_CBRA:
case OP_SCBRA:
bracketlen = 1 + LINK_SIZE + IMM2_SIZE;
break;
case OP_BRAZERO:
case OP_BRAMINZERO:
case OP_BRAPOSZERO:
repeat_check = FALSE;
size = 1;
break;
CASE_ITERATOR_PRIVATE_DATA_1
space = 1;
size = -2;
break;
CASE_ITERATOR_PRIVATE_DATA_2A
space = 2;
size = -2;
break;
CASE_ITERATOR_PRIVATE_DATA_2B
space = 2;
size = -(2 + IMM2_SIZE);
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_1
space = 1;
size = 1;
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_2A
if (cc[1] != OP_ANYNL && cc[1] != OP_EXTUNI)
space = 2;
size = 1;
break;
case OP_TYPEUPTO:
if (cc[1 + IMM2_SIZE] != OP_ANYNL && cc[1 + IMM2_SIZE] != OP_EXTUNI)
space = 2;
size = 1 + IMM2_SIZE;
break;
case OP_TYPEMINUPTO:
space = 2;
size = 1 + IMM2_SIZE;
break;
case OP_CLASS:
case OP_NCLASS:
space = get_class_iterator_size(cc + size);
size = 1 + 32 / sizeof(pcre_uchar);
break;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
space = get_class_iterator_size(cc + size);
size = GET(cc, 1);
break;
#endif
default:
cc = next_opcode(common, cc);
SLJIT_ASSERT(cc != NULL);
break;
}
/* Character iterators, which are not inside a repeated bracket,
gets a private slot instead of allocating it on the stack. */
if (space > 0 && cc >= end)
{
common->private_data_ptrs[cc - common->start] = private_data_ptr;
private_data_ptr += sizeof(sljit_sw) * space;
}
if (size != 0)
{
if (size < 0)
{
cc += -size;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
}
else
cc += size;
}
if (bracketlen > 0)
{
if (cc >= end)
{
end = bracketend(cc);
if (end[-1 - LINK_SIZE] == OP_KET)
end = NULL;
}
cc += bracketlen;
}
}
*private_data_start = private_data_ptr;
}
/* Returns with a frame_types (always < 0) if no need for frame. */
static int get_framesize(compiler_common *common, pcre_uchar *cc, pcre_uchar *ccend, BOOL recursive, BOOL *needs_control_head)
{
int length = 0;
int possessive = 0;
BOOL stack_restore = FALSE;
BOOL setsom_found = recursive;
BOOL setmark_found = recursive;
/* The last capture is a local variable even for recursions. */
BOOL capture_last_found = FALSE;
#if defined DEBUG_FORCE_CONTROL_HEAD && DEBUG_FORCE_CONTROL_HEAD
SLJIT_ASSERT(common->control_head_ptr != 0);
*needs_control_head = TRUE;
#else
*needs_control_head = FALSE;
#endif
if (ccend == NULL)
{
ccend = bracketend(cc) - (1 + LINK_SIZE);
if (!recursive && (*cc == OP_CBRAPOS || *cc == OP_SCBRAPOS))
{
possessive = length = (common->capture_last_ptr != 0) ? 5 : 3;
/* This is correct regardless of common->capture_last_ptr. */
capture_last_found = TRUE;
}
cc = next_opcode(common, cc);
}
SLJIT_ASSERT(cc != NULL);
while (cc < ccend)
switch(*cc)
{
case OP_SET_SOM:
SLJIT_ASSERT(common->has_set_som);
stack_restore = TRUE;
if (!setsom_found)
{
length += 2;
setsom_found = TRUE;
}
cc += 1;
break;
case OP_MARK:
case OP_PRUNE_ARG:
case OP_THEN_ARG:
SLJIT_ASSERT(common->mark_ptr != 0);
stack_restore = TRUE;
if (!setmark_found)
{
length += 2;
setmark_found = TRUE;
}
if (common->control_head_ptr != 0)
*needs_control_head = TRUE;
cc += 1 + 2 + cc[1];
break;
case OP_RECURSE:
stack_restore = TRUE;
if (common->has_set_som && !setsom_found)
{
length += 2;
setsom_found = TRUE;
}
if (common->mark_ptr != 0 && !setmark_found)
{
length += 2;
setmark_found = TRUE;
}
if (common->capture_last_ptr != 0 && !capture_last_found)
{
length += 2;
capture_last_found = TRUE;
}
cc += 1 + LINK_SIZE;
break;
case OP_CBRA:
case OP_CBRAPOS:
case OP_SCBRA:
case OP_SCBRAPOS:
stack_restore = TRUE;
if (common->capture_last_ptr != 0 && !capture_last_found)
{
length += 2;
capture_last_found = TRUE;
}
length += 3;
cc += 1 + LINK_SIZE + IMM2_SIZE;
break;
case OP_THEN:
stack_restore = TRUE;
if (common->control_head_ptr != 0)
*needs_control_head = TRUE;
cc ++;
break;
default:
stack_restore = TRUE;
/* Fall through. */
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
case OP_NOT_DIGIT:
case OP_DIGIT:
case OP_NOT_WHITESPACE:
case OP_WHITESPACE:
case OP_NOT_WORDCHAR:
case OP_WORDCHAR:
case OP_ANY:
case OP_ALLANY:
case OP_ANYBYTE:
case OP_NOTPROP:
case OP_PROP:
case OP_ANYNL:
case OP_NOT_HSPACE:
case OP_HSPACE:
case OP_NOT_VSPACE:
case OP_VSPACE:
case OP_EXTUNI:
case OP_EODN:
case OP_EOD:
case OP_CIRC:
case OP_CIRCM:
case OP_DOLL:
case OP_DOLLM:
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
case OP_EXACT:
case OP_POSSTAR:
case OP_POSPLUS:
case OP_POSQUERY:
case OP_POSUPTO:
case OP_EXACTI:
case OP_POSSTARI:
case OP_POSPLUSI:
case OP_POSQUERYI:
case OP_POSUPTOI:
case OP_NOTEXACT:
case OP_NOTPOSSTAR:
case OP_NOTPOSPLUS:
case OP_NOTPOSQUERY:
case OP_NOTPOSUPTO:
case OP_NOTEXACTI:
case OP_NOTPOSSTARI:
case OP_NOTPOSPLUSI:
case OP_NOTPOSQUERYI:
case OP_NOTPOSUPTOI:
case OP_TYPEEXACT:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSPLUS:
case OP_TYPEPOSQUERY:
case OP_TYPEPOSUPTO:
case OP_CLASS:
case OP_NCLASS:
case OP_XCLASS:
case OP_CALLOUT:
cc = next_opcode(common, cc);
SLJIT_ASSERT(cc != NULL);
break;
}
/* Possessive quantifiers can use a special case. */
if (SLJIT_UNLIKELY(possessive == length))
return stack_restore ? no_frame : no_stack;
if (length > 0)
return length + 1;
return stack_restore ? no_frame : no_stack;
}
static void init_frame(compiler_common *common, pcre_uchar *cc, pcre_uchar *ccend, int stackpos, int stacktop, BOOL recursive)
{
DEFINE_COMPILER;
BOOL setsom_found = recursive;
BOOL setmark_found = recursive;
/* The last capture is a local variable even for recursions. */
BOOL capture_last_found = FALSE;
int offset;
/* >= 1 + shortest item size (2) */
SLJIT_UNUSED_ARG(stacktop);
SLJIT_ASSERT(stackpos >= stacktop + 2);
stackpos = STACK(stackpos);
if (ccend == NULL)
{
ccend = bracketend(cc) - (1 + LINK_SIZE);
if (recursive || (*cc != OP_CBRAPOS && *cc != OP_SCBRAPOS))
cc = next_opcode(common, cc);
}
SLJIT_ASSERT(cc != NULL);
while (cc < ccend)
switch(*cc)
{
case OP_SET_SOM:
SLJIT_ASSERT(common->has_set_som);
if (!setsom_found)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(0));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, SLJIT_IMM, -OVECTOR(0));
stackpos -= (int)sizeof(sljit_sw);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, TMP1, 0);
stackpos -= (int)sizeof(sljit_sw);
setsom_found = TRUE;
}
cc += 1;
break;
case OP_MARK:
case OP_PRUNE_ARG:
case OP_THEN_ARG:
SLJIT_ASSERT(common->mark_ptr != 0);
if (!setmark_found)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->mark_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, SLJIT_IMM, -common->mark_ptr);
stackpos -= (int)sizeof(sljit_sw);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, TMP1, 0);
stackpos -= (int)sizeof(sljit_sw);
setmark_found = TRUE;
}
cc += 1 + 2 + cc[1];
break;
case OP_RECURSE:
if (common->has_set_som && !setsom_found)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(0));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, SLJIT_IMM, -OVECTOR(0));
stackpos -= (int)sizeof(sljit_sw);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, TMP1, 0);
stackpos -= (int)sizeof(sljit_sw);
setsom_found = TRUE;
}
if (common->mark_ptr != 0 && !setmark_found)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->mark_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, SLJIT_IMM, -common->mark_ptr);
stackpos -= (int)sizeof(sljit_sw);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, TMP1, 0);
stackpos -= (int)sizeof(sljit_sw);
setmark_found = TRUE;
}
if (common->capture_last_ptr != 0 && !capture_last_found)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, SLJIT_IMM, -common->capture_last_ptr);
stackpos -= (int)sizeof(sljit_sw);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, TMP1, 0);
stackpos -= (int)sizeof(sljit_sw);
capture_last_found = TRUE;
}
cc += 1 + LINK_SIZE;
break;
case OP_CBRA:
case OP_CBRAPOS:
case OP_SCBRA:
case OP_SCBRAPOS:
if (common->capture_last_ptr != 0 && !capture_last_found)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, SLJIT_IMM, -common->capture_last_ptr);
stackpos -= (int)sizeof(sljit_sw);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, TMP1, 0);
stackpos -= (int)sizeof(sljit_sw);
capture_last_found = TRUE;
}
offset = (GET2(cc, 1 + LINK_SIZE)) << 1;
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, SLJIT_IMM, OVECTOR(offset));
stackpos -= (int)sizeof(sljit_sw);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, TMP1, 0);
stackpos -= (int)sizeof(sljit_sw);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, TMP2, 0);
stackpos -= (int)sizeof(sljit_sw);
cc += 1 + LINK_SIZE + IMM2_SIZE;
break;
default:
cc = next_opcode(common, cc);
SLJIT_ASSERT(cc != NULL);
break;
}
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackpos, SLJIT_IMM, 0);
SLJIT_ASSERT(stackpos == STACK(stacktop));
}
static SLJIT_INLINE int get_private_data_copy_length(compiler_common *common, pcre_uchar *cc, pcre_uchar *ccend, BOOL needs_control_head)
{
int private_data_length = needs_control_head ? 3 : 2;
int size;
pcre_uchar *alternative;
/* Calculate the sum of the private machine words. */
while (cc < ccend)
{
size = 0;
switch(*cc)
{
case OP_KET:
if (PRIVATE_DATA(cc) != 0)
{
private_data_length++;
SLJIT_ASSERT(PRIVATE_DATA(cc + 1) != 0);
cc += PRIVATE_DATA(cc + 1);
}
cc += 1 + LINK_SIZE;
break;
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
case OP_ONCE:
case OP_ONCE_NC:
case OP_BRAPOS:
case OP_SBRA:
case OP_SBRAPOS:
case OP_SCOND:
private_data_length++;
SLJIT_ASSERT(PRIVATE_DATA(cc) != 0);
cc += 1 + LINK_SIZE;
break;
case OP_CBRA:
case OP_SCBRA:
if (common->optimized_cbracket[GET2(cc, 1 + LINK_SIZE)] == 0)
private_data_length++;
cc += 1 + LINK_SIZE + IMM2_SIZE;
break;
case OP_CBRAPOS:
case OP_SCBRAPOS:
private_data_length += 2;
cc += 1 + LINK_SIZE + IMM2_SIZE;
break;
case OP_COND:
/* Might be a hidden SCOND. */
alternative = cc + GET(cc, 1);
if (*alternative == OP_KETRMAX || *alternative == OP_KETRMIN)
private_data_length++;
cc += 1 + LINK_SIZE;
break;
CASE_ITERATOR_PRIVATE_DATA_1
if (PRIVATE_DATA(cc))
private_data_length++;
cc += 2;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
break;
CASE_ITERATOR_PRIVATE_DATA_2A
if (PRIVATE_DATA(cc))
private_data_length += 2;
cc += 2;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
break;
CASE_ITERATOR_PRIVATE_DATA_2B
if (PRIVATE_DATA(cc))
private_data_length += 2;
cc += 2 + IMM2_SIZE;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_1
if (PRIVATE_DATA(cc))
private_data_length++;
cc += 1;
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_2A
if (PRIVATE_DATA(cc))
private_data_length += 2;
cc += 1;
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_2B
if (PRIVATE_DATA(cc))
private_data_length += 2;
cc += 1 + IMM2_SIZE;
break;
case OP_CLASS:
case OP_NCLASS:
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
size = (*cc == OP_XCLASS) ? GET(cc, 1) : 1 + 32 / (int)sizeof(pcre_uchar);
#else
size = 1 + 32 / (int)sizeof(pcre_uchar);
#endif
if (PRIVATE_DATA(cc))
private_data_length += get_class_iterator_size(cc + size);
cc += size;
break;
default:
cc = next_opcode(common, cc);
SLJIT_ASSERT(cc != NULL);
break;
}
}
SLJIT_ASSERT(cc == ccend);
return private_data_length;
}
static void copy_private_data(compiler_common *common, pcre_uchar *cc, pcre_uchar *ccend,
BOOL save, int stackptr, int stacktop, BOOL needs_control_head)
{
DEFINE_COMPILER;
int srcw[2];
int count, size;
BOOL tmp1next = TRUE;
BOOL tmp1empty = TRUE;
BOOL tmp2empty = TRUE;
pcre_uchar *alternative;
enum {
loop,
end
} status;
status = loop;
stackptr = STACK(stackptr);
stacktop = STACK(stacktop - 1);
if (!save)
{
stacktop -= (needs_control_head ? 2 : 1) * sizeof(sljit_sw);
if (stackptr < stacktop)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), stackptr);
stackptr += sizeof(sljit_sw);
tmp1empty = FALSE;
}
if (stackptr < stacktop)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), stackptr);
stackptr += sizeof(sljit_sw);
tmp2empty = FALSE;
}
/* The tmp1next must be TRUE in either way. */
}
SLJIT_ASSERT(common->recursive_head_ptr != 0);
do
{
count = 0;
if (cc >= ccend)
{
if (!save)
break;
count = 1;
srcw[0] = common->recursive_head_ptr;
if (needs_control_head)
{
SLJIT_ASSERT(common->control_head_ptr != 0);
count = 2;
srcw[0] = common->control_head_ptr;
srcw[1] = common->recursive_head_ptr;
}
status = end;
}
else switch(*cc)
{
case OP_KET:
if (PRIVATE_DATA(cc) != 0)
{
count = 1;
srcw[0] = PRIVATE_DATA(cc);
SLJIT_ASSERT(PRIVATE_DATA(cc + 1) != 0);
cc += PRIVATE_DATA(cc + 1);
}
cc += 1 + LINK_SIZE;
break;
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
case OP_ONCE:
case OP_ONCE_NC:
case OP_BRAPOS:
case OP_SBRA:
case OP_SBRAPOS:
case OP_SCOND:
count = 1;
srcw[0] = PRIVATE_DATA(cc);
SLJIT_ASSERT(srcw[0] != 0);
cc += 1 + LINK_SIZE;
break;
case OP_CBRA:
case OP_SCBRA:
if (common->optimized_cbracket[GET2(cc, 1 + LINK_SIZE)] == 0)
{
count = 1;
srcw[0] = OVECTOR_PRIV(GET2(cc, 1 + LINK_SIZE));
}
cc += 1 + LINK_SIZE + IMM2_SIZE;
break;
case OP_CBRAPOS:
case OP_SCBRAPOS:
count = 2;
srcw[0] = PRIVATE_DATA(cc);
srcw[1] = OVECTOR_PRIV(GET2(cc, 1 + LINK_SIZE));
SLJIT_ASSERT(srcw[0] != 0 && srcw[1] != 0);
cc += 1 + LINK_SIZE + IMM2_SIZE;
break;
case OP_COND:
/* Might be a hidden SCOND. */
alternative = cc + GET(cc, 1);
if (*alternative == OP_KETRMAX || *alternative == OP_KETRMIN)
{
count = 1;
srcw[0] = PRIVATE_DATA(cc);
SLJIT_ASSERT(srcw[0] != 0);
}
cc += 1 + LINK_SIZE;
break;
CASE_ITERATOR_PRIVATE_DATA_1
if (PRIVATE_DATA(cc))
{
count = 1;
srcw[0] = PRIVATE_DATA(cc);
}
cc += 2;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
break;
CASE_ITERATOR_PRIVATE_DATA_2A
if (PRIVATE_DATA(cc))
{
count = 2;
srcw[0] = PRIVATE_DATA(cc);
srcw[1] = PRIVATE_DATA(cc) + sizeof(sljit_sw);
}
cc += 2;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
break;
CASE_ITERATOR_PRIVATE_DATA_2B
if (PRIVATE_DATA(cc))
{
count = 2;
srcw[0] = PRIVATE_DATA(cc);
srcw[1] = PRIVATE_DATA(cc) + sizeof(sljit_sw);
}
cc += 2 + IMM2_SIZE;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_1
if (PRIVATE_DATA(cc))
{
count = 1;
srcw[0] = PRIVATE_DATA(cc);
}
cc += 1;
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_2A
if (PRIVATE_DATA(cc))
{
count = 2;
srcw[0] = PRIVATE_DATA(cc);
srcw[1] = srcw[0] + sizeof(sljit_sw);
}
cc += 1;
break;
CASE_ITERATOR_TYPE_PRIVATE_DATA_2B
if (PRIVATE_DATA(cc))
{
count = 2;
srcw[0] = PRIVATE_DATA(cc);
srcw[1] = srcw[0] + sizeof(sljit_sw);
}
cc += 1 + IMM2_SIZE;
break;
case OP_CLASS:
case OP_NCLASS:
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
size = (*cc == OP_XCLASS) ? GET(cc, 1) : 1 + 32 / (int)sizeof(pcre_uchar);
#else
size = 1 + 32 / (int)sizeof(pcre_uchar);
#endif
if (PRIVATE_DATA(cc))
switch(get_class_iterator_size(cc + size))
{
case 1:
count = 1;
srcw[0] = PRIVATE_DATA(cc);
break;
case 2:
count = 2;
srcw[0] = PRIVATE_DATA(cc);
srcw[1] = srcw[0] + sizeof(sljit_sw);
break;
default:
SLJIT_UNREACHABLE();
break;
}
cc += size;
break;
default:
cc = next_opcode(common, cc);
SLJIT_ASSERT(cc != NULL);
break;
}
while (count > 0)
{
count--;
if (save)
{
if (tmp1next)
{
if (!tmp1empty)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackptr, TMP1, 0);
stackptr += sizeof(sljit_sw);
}
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), srcw[count]);
tmp1empty = FALSE;
tmp1next = FALSE;
}
else
{
if (!tmp2empty)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackptr, TMP2, 0);
stackptr += sizeof(sljit_sw);
}
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), srcw[count]);
tmp2empty = FALSE;
tmp1next = TRUE;
}
}
else
{
if (tmp1next)
{
SLJIT_ASSERT(!tmp1empty);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), srcw[count], TMP1, 0);
tmp1empty = stackptr >= stacktop;
if (!tmp1empty)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), stackptr);
stackptr += sizeof(sljit_sw);
}
tmp1next = FALSE;
}
else
{
SLJIT_ASSERT(!tmp2empty);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), srcw[count], TMP2, 0);
tmp2empty = stackptr >= stacktop;
if (!tmp2empty)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), stackptr);
stackptr += sizeof(sljit_sw);
}
tmp1next = TRUE;
}
}
}
}
while (status != end);
if (save)
{
if (tmp1next)
{
if (!tmp1empty)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackptr, TMP1, 0);
stackptr += sizeof(sljit_sw);
}
if (!tmp2empty)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackptr, TMP2, 0);
stackptr += sizeof(sljit_sw);
}
}
else
{
if (!tmp2empty)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackptr, TMP2, 0);
stackptr += sizeof(sljit_sw);
}
if (!tmp1empty)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), stackptr, TMP1, 0);
stackptr += sizeof(sljit_sw);
}
}
}
SLJIT_ASSERT(cc == ccend && stackptr == stacktop && (save || (tmp1empty && tmp2empty)));
}
static SLJIT_INLINE pcre_uchar *set_then_offsets(compiler_common *common, pcre_uchar *cc, sljit_u8 *current_offset)
{
pcre_uchar *end = bracketend(cc);
BOOL has_alternatives = cc[GET(cc, 1)] == OP_ALT;
/* Assert captures then. */
if (*cc >= OP_ASSERT && *cc <= OP_ASSERTBACK_NOT)
current_offset = NULL;
/* Conditional block does not. */
if (*cc == OP_COND || *cc == OP_SCOND)
has_alternatives = FALSE;
cc = next_opcode(common, cc);
if (has_alternatives)
current_offset = common->then_offsets + (cc - common->start);
while (cc < end)
{
if ((*cc >= OP_ASSERT && *cc <= OP_ASSERTBACK_NOT) || (*cc >= OP_ONCE && *cc <= OP_SCOND))
cc = set_then_offsets(common, cc, current_offset);
else
{
if (*cc == OP_ALT && has_alternatives)
current_offset = common->then_offsets + (cc + 1 + LINK_SIZE - common->start);
if (*cc >= OP_THEN && *cc <= OP_THEN_ARG && current_offset != NULL)
*current_offset = 1;
cc = next_opcode(common, cc);
}
}
return end;
}
#undef CASE_ITERATOR_PRIVATE_DATA_1
#undef CASE_ITERATOR_PRIVATE_DATA_2A
#undef CASE_ITERATOR_PRIVATE_DATA_2B
#undef CASE_ITERATOR_TYPE_PRIVATE_DATA_1
#undef CASE_ITERATOR_TYPE_PRIVATE_DATA_2A
#undef CASE_ITERATOR_TYPE_PRIVATE_DATA_2B
static SLJIT_INLINE BOOL is_powerof2(unsigned int value)
{
return (value & (value - 1)) == 0;
}
static SLJIT_INLINE void set_jumps(jump_list *list, struct sljit_label *label)
{
while (list)
{
/* sljit_set_label is clever enough to do nothing
if either the jump or the label is NULL. */
SET_LABEL(list->jump, label);
list = list->next;
}
}
static SLJIT_INLINE void add_jump(struct sljit_compiler *compiler, jump_list **list, struct sljit_jump *jump)
{
jump_list *list_item = sljit_alloc_memory(compiler, sizeof(jump_list));
if (list_item)
{
list_item->next = *list;
list_item->jump = jump;
*list = list_item;
}
}
static void add_stub(compiler_common *common, struct sljit_jump *start)
{
DEFINE_COMPILER;
stub_list *list_item = sljit_alloc_memory(compiler, sizeof(stub_list));
if (list_item)
{
list_item->start = start;
list_item->quit = LABEL();
list_item->next = common->stubs;
common->stubs = list_item;
}
}
static void flush_stubs(compiler_common *common)
{
DEFINE_COMPILER;
stub_list *list_item = common->stubs;
while (list_item)
{
JUMPHERE(list_item->start);
add_jump(compiler, &common->stackalloc, JUMP(SLJIT_FAST_CALL));
JUMPTO(SLJIT_JUMP, list_item->quit);
list_item = list_item->next;
}
common->stubs = NULL;
}
static void add_label_addr(compiler_common *common, sljit_uw *update_addr)
{
DEFINE_COMPILER;
label_addr_list *label_addr;
label_addr = sljit_alloc_memory(compiler, sizeof(label_addr_list));
if (label_addr == NULL)
return;
label_addr->label = LABEL();
label_addr->update_addr = update_addr;
label_addr->next = common->label_addrs;
common->label_addrs = label_addr;
}
static SLJIT_INLINE void count_match(compiler_common *common)
{
DEFINE_COMPILER;
OP2(SLJIT_SUB | SLJIT_SET_Z, COUNT_MATCH, 0, COUNT_MATCH, 0, SLJIT_IMM, 1);
add_jump(compiler, &common->calllimit, JUMP(SLJIT_ZERO));
}
static SLJIT_INLINE void allocate_stack(compiler_common *common, int size)
{
/* May destroy all locals and registers except TMP2. */
DEFINE_COMPILER;
SLJIT_ASSERT(size > 0);
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, size * sizeof(sljit_sw));
#ifdef DESTROY_REGISTERS
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, 12345);
OP1(SLJIT_MOV, TMP3, 0, TMP1, 0);
OP1(SLJIT_MOV, RETURN_ADDR, 0, TMP1, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS0, TMP1, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS1, TMP1, 0);
#endif
add_stub(common, CMP(SLJIT_LESS, STACK_TOP, 0, STACK_LIMIT, 0));
}
static SLJIT_INLINE void free_stack(compiler_common *common, int size)
{
DEFINE_COMPILER;
SLJIT_ASSERT(size > 0);
OP2(SLJIT_ADD, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, size * sizeof(sljit_sw));
}
static sljit_uw * allocate_read_only_data(compiler_common *common, sljit_uw size)
{
DEFINE_COMPILER;
sljit_uw *result;
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return NULL;
result = (sljit_uw *)SLJIT_MALLOC(size + sizeof(sljit_uw), compiler->allocator_data);
if (SLJIT_UNLIKELY(result == NULL))
{
sljit_set_compiler_memory_error(compiler);
return NULL;
}
*(void**)result = common->read_only_data_head;
common->read_only_data_head = (void *)result;
return result + 1;
}
static void free_read_only_data(void *current, void *allocator_data)
{
void *next;
SLJIT_UNUSED_ARG(allocator_data);
while (current != NULL)
{
next = *(void**)current;
SLJIT_FREE(current, allocator_data);
current = next;
}
}
static SLJIT_INLINE void reset_ovector(compiler_common *common, int length)
{
DEFINE_COMPILER;
struct sljit_label *loop;
int i;
/* At this point we can freely use all temporary registers. */
SLJIT_ASSERT(length > 1);
/* TMP1 returns with begin - 1. */
OP2(SLJIT_SUB, SLJIT_R0, 0, SLJIT_MEM1(SLJIT_S0), SLJIT_OFFSETOF(jit_arguments, begin), SLJIT_IMM, IN_UCHARS(1));
if (length < 8)
{
for (i = 1; i < length; i++)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(i), SLJIT_R0, 0);
}
else
{
if (sljit_emit_mem(compiler, SLJIT_MOV | SLJIT_MEM_SUPP | SLJIT_MEM_STORE | SLJIT_MEM_PRE, SLJIT_R0, SLJIT_MEM1(SLJIT_R1), sizeof(sljit_sw)) == SLJIT_SUCCESS)
{
GET_LOCAL_BASE(SLJIT_R1, 0, OVECTOR_START);
OP1(SLJIT_MOV, SLJIT_R2, 0, SLJIT_IMM, length - 1);
loop = LABEL();
sljit_emit_mem(compiler, SLJIT_MOV | SLJIT_MEM_STORE | SLJIT_MEM_PRE, SLJIT_R0, SLJIT_MEM1(SLJIT_R1), sizeof(sljit_sw));
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_R2, 0, SLJIT_R2, 0, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, loop);
}
else
{
GET_LOCAL_BASE(SLJIT_R1, 0, OVECTOR_START + sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_R2, 0, SLJIT_IMM, length - 1);
loop = LABEL();
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_R1), 0, SLJIT_R0, 0);
OP2(SLJIT_ADD, SLJIT_R1, 0, SLJIT_R1, 0, SLJIT_IMM, sizeof(sljit_sw));
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_R2, 0, SLJIT_R2, 0, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, loop);
}
}
}
static SLJIT_INLINE void reset_fast_fail(compiler_common *common)
{
DEFINE_COMPILER;
sljit_s32 i;
SLJIT_ASSERT(common->fast_fail_start_ptr < common->fast_fail_end_ptr);
OP2(SLJIT_SUB, TMP1, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
for (i = common->fast_fail_start_ptr; i < common->fast_fail_end_ptr; i += sizeof(sljit_sw))
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), i, TMP1, 0);
}
static SLJIT_INLINE void do_reset_match(compiler_common *common, int length)
{
DEFINE_COMPILER;
struct sljit_label *loop;
int i;
SLJIT_ASSERT(length > 1);
/* OVECTOR(1) contains the "string begin - 1" constant. */
if (length > 2)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(1));
if (length < 8)
{
for (i = 2; i < length; i++)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(i), TMP1, 0);
}
else
{
if (sljit_emit_mem(compiler, SLJIT_MOV | SLJIT_MEM_SUPP | SLJIT_MEM_STORE | SLJIT_MEM_PRE, TMP1, SLJIT_MEM1(TMP2), sizeof(sljit_sw)) == SLJIT_SUCCESS)
{
GET_LOCAL_BASE(TMP2, 0, OVECTOR_START + sizeof(sljit_sw));
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_IMM, length - 2);
loop = LABEL();
sljit_emit_mem(compiler, SLJIT_MOV | SLJIT_MEM_STORE | SLJIT_MEM_PRE, TMP1, SLJIT_MEM1(TMP2), sizeof(sljit_sw));
OP2(SLJIT_SUB | SLJIT_SET_Z, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, loop);
}
else
{
GET_LOCAL_BASE(TMP2, 0, OVECTOR_START + 2 * sizeof(sljit_sw));
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_IMM, length - 2);
loop = LABEL();
OP1(SLJIT_MOV, SLJIT_MEM1(TMP2), 0, TMP1, 0);
OP2(SLJIT_ADD, TMP2, 0, TMP2, 0, SLJIT_IMM, sizeof(sljit_sw));
OP2(SLJIT_SUB | SLJIT_SET_Z, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, loop);
}
}
OP1(SLJIT_MOV, STACK_TOP, 0, ARGUMENTS, 0);
if (common->mark_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->mark_ptr, SLJIT_IMM, 0);
if (common->control_head_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_IMM, 0);
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(STACK_TOP), SLJIT_OFFSETOF(jit_arguments, stack));
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->start_ptr);
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(STACK_TOP), SLJIT_OFFSETOF(struct sljit_stack, end));
}
static sljit_sw SLJIT_FUNC do_search_mark(sljit_sw *current, const pcre_uchar *skip_arg)
{
while (current != NULL)
{
switch (current[1])
{
case type_then_trap:
break;
case type_mark:
if (STRCMP_UC_UC(skip_arg, (pcre_uchar *)current[2]) == 0)
return current[3];
break;
default:
SLJIT_UNREACHABLE();
break;
}
SLJIT_ASSERT(current[0] == 0 || current < (sljit_sw*)current[0]);
current = (sljit_sw*)current[0];
}
return 0;
}
static SLJIT_INLINE void copy_ovector(compiler_common *common, int topbracket)
{
DEFINE_COMPILER;
struct sljit_label *loop;
struct sljit_jump *early_quit;
BOOL has_pre;
/* At this point we can freely use all registers. */
OP1(SLJIT_MOV, SLJIT_S2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(1));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(1), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_R0, 0, ARGUMENTS, 0);
if (common->mark_ptr != 0)
OP1(SLJIT_MOV, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), common->mark_ptr);
OP1(SLJIT_MOV_S32, SLJIT_R1, 0, SLJIT_MEM1(SLJIT_R0), SLJIT_OFFSETOF(jit_arguments, offset_count));
if (common->mark_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_R0), SLJIT_OFFSETOF(jit_arguments, mark_ptr), SLJIT_R2, 0);
OP2(SLJIT_SUB, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_R0), SLJIT_OFFSETOF(jit_arguments, offsets), SLJIT_IMM, sizeof(int));
OP1(SLJIT_MOV, SLJIT_R0, 0, SLJIT_MEM1(SLJIT_R0), SLJIT_OFFSETOF(jit_arguments, begin));
has_pre = sljit_emit_mem(compiler, SLJIT_MOV | SLJIT_MEM_SUPP | SLJIT_MEM_PRE, SLJIT_S1, SLJIT_MEM1(SLJIT_S0), sizeof(sljit_sw)) == SLJIT_SUCCESS;
GET_LOCAL_BASE(SLJIT_S0, 0, OVECTOR_START - (has_pre ? sizeof(sljit_sw) : 0));
/* Unlikely, but possible */
early_quit = CMP(SLJIT_EQUAL, SLJIT_R1, 0, SLJIT_IMM, 0);
loop = LABEL();
if (has_pre)
sljit_emit_mem(compiler, SLJIT_MOV | SLJIT_MEM_PRE, SLJIT_S1, SLJIT_MEM1(SLJIT_S0), sizeof(sljit_sw));
else
{
OP1(SLJIT_MOV, SLJIT_S1, 0, SLJIT_MEM1(SLJIT_S0), 0);
OP2(SLJIT_ADD, SLJIT_S0, 0, SLJIT_S0, 0, SLJIT_IMM, sizeof(sljit_sw));
}
OP2(SLJIT_ADD, SLJIT_R2, 0, SLJIT_R2, 0, SLJIT_IMM, sizeof(int));
OP2(SLJIT_SUB, SLJIT_S1, 0, SLJIT_S1, 0, SLJIT_R0, 0);
/* Copy the integer value to the output buffer */
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
OP2(SLJIT_ASHR, SLJIT_S1, 0, SLJIT_S1, 0, SLJIT_IMM, UCHAR_SHIFT);
#endif
OP1(SLJIT_MOV_S32, SLJIT_MEM1(SLJIT_R2), 0, SLJIT_S1, 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_R1, 0, SLJIT_R1, 0, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, loop);
JUMPHERE(early_quit);
/* Calculate the return value, which is the maximum ovector value. */
if (topbracket > 1)
{
if (sljit_emit_mem(compiler, SLJIT_MOV | SLJIT_MEM_SUPP | SLJIT_MEM_PRE, SLJIT_R2, SLJIT_MEM1(SLJIT_R0), -(2 * (sljit_sw)sizeof(sljit_sw))) == SLJIT_SUCCESS)
{
GET_LOCAL_BASE(SLJIT_R0, 0, OVECTOR_START + topbracket * 2 * sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_R1, 0, SLJIT_IMM, topbracket + 1);
/* OVECTOR(0) is never equal to SLJIT_S2. */
loop = LABEL();
sljit_emit_mem(compiler, SLJIT_MOV | SLJIT_MEM_PRE, SLJIT_R2, SLJIT_MEM1(SLJIT_R0), -(2 * (sljit_sw)sizeof(sljit_sw)));
OP2(SLJIT_SUB, SLJIT_R1, 0, SLJIT_R1, 0, SLJIT_IMM, 1);
CMPTO(SLJIT_EQUAL, SLJIT_R2, 0, SLJIT_S2, 0, loop);
}
else
{
GET_LOCAL_BASE(SLJIT_R0, 0, OVECTOR_START + (topbracket - 1) * 2 * sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_R1, 0, SLJIT_IMM, topbracket + 1);
/* OVECTOR(0) is never equal to SLJIT_S2. */
loop = LABEL();
OP1(SLJIT_MOV, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_R0), 0);
OP2(SLJIT_SUB, SLJIT_R0, 0, SLJIT_R0, 0, SLJIT_IMM, 2 * (sljit_sw)sizeof(sljit_sw));
OP2(SLJIT_SUB, SLJIT_R1, 0, SLJIT_R1, 0, SLJIT_IMM, 1);
CMPTO(SLJIT_EQUAL, SLJIT_R2, 0, SLJIT_S2, 0, loop);
}
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_R1, 0);
}
else
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, 1);
}
static SLJIT_INLINE void return_with_partial_match(compiler_common *common, struct sljit_label *quit)
{
DEFINE_COMPILER;
struct sljit_jump *jump;
SLJIT_COMPILE_ASSERT(STR_END == SLJIT_S1, str_end_must_be_saved_reg2);
SLJIT_ASSERT(common->start_used_ptr != 0 && common->start_ptr != 0
&& (common->mode == JIT_PARTIAL_SOFT_COMPILE ? common->hit_start != 0 : common->hit_start == 0));
OP1(SLJIT_MOV, SLJIT_R1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, PCRE_ERROR_PARTIAL);
OP1(SLJIT_MOV_S32, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_R1), SLJIT_OFFSETOF(jit_arguments, real_offset_count));
CMPTO(SLJIT_SIG_LESS, SLJIT_R2, 0, SLJIT_IMM, 2, quit);
/* Store match begin and end. */
OP1(SLJIT_MOV, SLJIT_S0, 0, SLJIT_MEM1(SLJIT_R1), SLJIT_OFFSETOF(jit_arguments, begin));
OP1(SLJIT_MOV, SLJIT_R1, 0, SLJIT_MEM1(SLJIT_R1), SLJIT_OFFSETOF(jit_arguments, offsets));
jump = CMP(SLJIT_SIG_LESS, SLJIT_R2, 0, SLJIT_IMM, 3);
OP2(SLJIT_SUB, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), common->mode == JIT_PARTIAL_HARD_COMPILE ? common->start_ptr : (common->hit_start + (int)sizeof(sljit_sw)), SLJIT_S0, 0);
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
OP2(SLJIT_ASHR, SLJIT_R2, 0, SLJIT_R2, 0, SLJIT_IMM, UCHAR_SHIFT);
#endif
OP1(SLJIT_MOV_S32, SLJIT_MEM1(SLJIT_R1), 2 * sizeof(int), SLJIT_R2, 0);
JUMPHERE(jump);
OP1(SLJIT_MOV, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), common->mode == JIT_PARTIAL_HARD_COMPILE ? common->start_used_ptr : common->hit_start);
OP2(SLJIT_SUB, SLJIT_S1, 0, STR_END, 0, SLJIT_S0, 0);
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
OP2(SLJIT_ASHR, SLJIT_S1, 0, SLJIT_S1, 0, SLJIT_IMM, UCHAR_SHIFT);
#endif
OP1(SLJIT_MOV_S32, SLJIT_MEM1(SLJIT_R1), sizeof(int), SLJIT_S1, 0);
OP2(SLJIT_SUB, SLJIT_R2, 0, SLJIT_R2, 0, SLJIT_S0, 0);
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
OP2(SLJIT_ASHR, SLJIT_R2, 0, SLJIT_R2, 0, SLJIT_IMM, UCHAR_SHIFT);
#endif
OP1(SLJIT_MOV_S32, SLJIT_MEM1(SLJIT_R1), 0, SLJIT_R2, 0);
JUMPTO(SLJIT_JUMP, quit);
}
static SLJIT_INLINE void check_start_used_ptr(compiler_common *common)
{
/* May destroy TMP1. */
DEFINE_COMPILER;
struct sljit_jump *jump;
if (common->mode == JIT_PARTIAL_SOFT_COMPILE)
{
/* The value of -1 must be kept for start_used_ptr! */
OP2(SLJIT_ADD, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, SLJIT_IMM, 1);
/* Jumps if start_used_ptr < STR_PTR, or start_used_ptr == -1. Although overwriting
is not necessary if start_used_ptr == STR_PTR, it does not hurt as well. */
jump = CMP(SLJIT_LESS_EQUAL, TMP1, 0, STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0);
JUMPHERE(jump);
}
else if (common->mode == JIT_PARTIAL_HARD_COMPILE)
{
jump = CMP(SLJIT_LESS_EQUAL, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0);
JUMPHERE(jump);
}
}
static SLJIT_INLINE BOOL char_has_othercase(compiler_common *common, pcre_uchar *cc)
{
/* Detects if the character has an othercase. */
unsigned int c;
#ifdef SUPPORT_UTF
if (common->utf)
{
GETCHAR(c, cc);
if (c > 127)
{
#ifdef SUPPORT_UCP
return c != UCD_OTHERCASE(c);
#else
return FALSE;
#endif
}
#ifndef COMPILE_PCRE8
return common->fcc[c] != c;
#endif
}
else
#endif
c = *cc;
return MAX_255(c) ? common->fcc[c] != c : FALSE;
}
static SLJIT_INLINE unsigned int char_othercase(compiler_common *common, unsigned int c)
{
/* Returns with the othercase. */
#ifdef SUPPORT_UTF
if (common->utf && c > 127)
{
#ifdef SUPPORT_UCP
return UCD_OTHERCASE(c);
#else
return c;
#endif
}
#endif
return TABLE_GET(c, common->fcc, c);
}
static unsigned int char_get_othercase_bit(compiler_common *common, pcre_uchar *cc)
{
/* Detects if the character and its othercase has only 1 bit difference. */
unsigned int c, oc, bit;
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
int n;
#endif
#ifdef SUPPORT_UTF
if (common->utf)
{
GETCHAR(c, cc);
if (c <= 127)
oc = common->fcc[c];
else
{
#ifdef SUPPORT_UCP
oc = UCD_OTHERCASE(c);
#else
oc = c;
#endif
}
}
else
{
c = *cc;
oc = TABLE_GET(c, common->fcc, c);
}
#else
c = *cc;
oc = TABLE_GET(c, common->fcc, c);
#endif
SLJIT_ASSERT(c != oc);
bit = c ^ oc;
/* Optimized for English alphabet. */
if (c <= 127 && bit == 0x20)
return (0 << 8) | 0x20;
/* Since c != oc, they must have at least 1 bit difference. */
if (!is_powerof2(bit))
return 0;
#if defined COMPILE_PCRE8
#ifdef SUPPORT_UTF
if (common->utf && c > 127)
{
n = GET_EXTRALEN(*cc);
while ((bit & 0x3f) == 0)
{
n--;
bit >>= 6;
}
return (n << 8) | bit;
}
#endif /* SUPPORT_UTF */
return (0 << 8) | bit;
#elif defined COMPILE_PCRE16 || defined COMPILE_PCRE32
#ifdef SUPPORT_UTF
if (common->utf && c > 65535)
{
if (bit >= (1 << 10))
bit >>= 10;
else
return (bit < 256) ? ((2 << 8) | bit) : ((3 << 8) | (bit >> 8));
}
#endif /* SUPPORT_UTF */
return (bit < 256) ? ((0 << 8) | bit) : ((1 << 8) | (bit >> 8));
#endif /* COMPILE_PCRE[8|16|32] */
}
static void check_partial(compiler_common *common, BOOL force)
{
/* Checks whether a partial matching is occurred. Does not modify registers. */
DEFINE_COMPILER;
struct sljit_jump *jump = NULL;
SLJIT_ASSERT(!force || common->mode != JIT_COMPILE);
if (common->mode == JIT_COMPILE)
return;
if (!force)
jump = CMP(SLJIT_GREATER_EQUAL, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0);
else if (common->mode == JIT_PARTIAL_SOFT_COMPILE)
jump = CMP(SLJIT_EQUAL, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, SLJIT_IMM, -1);
if (common->mode == JIT_PARTIAL_SOFT_COMPILE)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->hit_start, SLJIT_IMM, 0);
else
{
if (common->partialmatchlabel != NULL)
JUMPTO(SLJIT_JUMP, common->partialmatchlabel);
else
add_jump(compiler, &common->partialmatch, JUMP(SLJIT_JUMP));
}
if (jump != NULL)
JUMPHERE(jump);
}
static void check_str_end(compiler_common *common, jump_list **end_reached)
{
/* Does not affect registers. Usually used in a tight spot. */
DEFINE_COMPILER;
struct sljit_jump *jump;
if (common->mode == JIT_COMPILE)
{
add_jump(compiler, end_reached, CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0));
return;
}
jump = CMP(SLJIT_LESS, STR_PTR, 0, STR_END, 0);
if (common->mode == JIT_PARTIAL_SOFT_COMPILE)
{
add_jump(compiler, end_reached, CMP(SLJIT_GREATER_EQUAL, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->hit_start, SLJIT_IMM, 0);
add_jump(compiler, end_reached, JUMP(SLJIT_JUMP));
}
else
{
add_jump(compiler, end_reached, CMP(SLJIT_GREATER_EQUAL, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0));
if (common->partialmatchlabel != NULL)
JUMPTO(SLJIT_JUMP, common->partialmatchlabel);
else
add_jump(compiler, &common->partialmatch, JUMP(SLJIT_JUMP));
}
JUMPHERE(jump);
}
static void detect_partial_match(compiler_common *common, jump_list **backtracks)
{
DEFINE_COMPILER;
struct sljit_jump *jump;
if (common->mode == JIT_COMPILE)
{
add_jump(compiler, backtracks, CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0));
return;
}
/* Partial matching mode. */
jump = CMP(SLJIT_LESS, STR_PTR, 0, STR_END, 0);
add_jump(compiler, backtracks, CMP(SLJIT_GREATER_EQUAL, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0));
if (common->mode == JIT_PARTIAL_SOFT_COMPILE)
{
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->hit_start, SLJIT_IMM, 0);
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
}
else
{
if (common->partialmatchlabel != NULL)
JUMPTO(SLJIT_JUMP, common->partialmatchlabel);
else
add_jump(compiler, &common->partialmatch, JUMP(SLJIT_JUMP));
}
JUMPHERE(jump);
}
static void peek_char(compiler_common *common, sljit_u32 max)
{
/* Reads the character into TMP1, keeps STR_PTR.
Does not check STR_END. TMP2 Destroyed. */
DEFINE_COMPILER;
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
struct sljit_jump *jump;
#endif
SLJIT_UNUSED_ARG(max);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf)
{
if (max < 128) return;
jump = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xc0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
add_jump(compiler, &common->utfreadchar, JUMP(SLJIT_FAST_CALL));
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
JUMPHERE(jump);
}
#endif /* SUPPORT_UTF && !COMPILE_PCRE32 */
#if defined SUPPORT_UTF && defined COMPILE_PCRE16
if (common->utf)
{
if (max < 0xd800) return;
OP2(SLJIT_SUB, TMP2, 0, TMP1, 0, SLJIT_IMM, 0xd800);
jump = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 0xdc00 - 0xd800 - 1);
/* TMP2 contains the high surrogate. */
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
OP2(SLJIT_ADD, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x40);
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, 10);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3ff);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
JUMPHERE(jump);
}
#endif
}
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
static BOOL is_char7_bitset(const sljit_u8 *bitset, BOOL nclass)
{
/* Tells whether the character codes below 128 are enough
to determine a match. */
const sljit_u8 value = nclass ? 0xff : 0;
const sljit_u8 *end = bitset + 32;
bitset += 16;
do
{
if (*bitset++ != value)
return FALSE;
}
while (bitset < end);
return TRUE;
}
static void read_char7_type(compiler_common *common, BOOL full_read)
{
/* Reads the precise character type of a character into TMP1, if the character
is less than 128. Otherwise it returns with zero. Does not check STR_END. The
full_read argument tells whether characters above max are accepted or not. */
DEFINE_COMPILER;
struct sljit_jump *jump;
SLJIT_ASSERT(common->utf);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), 0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP2), common->ctypes);
if (full_read)
{
jump = CMP(SLJIT_LESS, TMP2, 0, SLJIT_IMM, 0xc0);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP2), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
JUMPHERE(jump);
}
}
#endif /* SUPPORT_UTF && COMPILE_PCRE8 */
static void read_char_range(compiler_common *common, sljit_u32 min, sljit_u32 max, BOOL update_str_ptr)
{
/* Reads the precise value of a character into TMP1, if the character is
between min and max (c >= min && c <= max). Otherwise it returns with a value
outside the range. Does not check STR_END. */
DEFINE_COMPILER;
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
struct sljit_jump *jump;
#endif
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
struct sljit_jump *jump2;
#endif
SLJIT_UNUSED_ARG(update_str_ptr);
SLJIT_UNUSED_ARG(min);
SLJIT_UNUSED_ARG(max);
SLJIT_ASSERT(min <= max);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf)
{
if (max < 128 && !update_str_ptr) return;
jump = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xc0);
if (min >= 0x10000)
{
OP2(SLJIT_SUB, TMP2, 0, TMP1, 0, SLJIT_IMM, 0xf0);
if (update_str_ptr)
OP1(SLJIT_MOV_U8, RETURN_ADDR, 0, SLJIT_MEM1(TMP1), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
jump2 = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 0x7);
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(2));
if (!update_str_ptr)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(3));
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
JUMPHERE(jump2);
if (update_str_ptr)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, RETURN_ADDR, 0);
}
else if (min >= 0x800 && max <= 0xffff)
{
OP2(SLJIT_SUB, TMP2, 0, TMP1, 0, SLJIT_IMM, 0xe0);
if (update_str_ptr)
OP1(SLJIT_MOV_U8, RETURN_ADDR, 0, SLJIT_MEM1(TMP1), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
jump2 = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 0xf);
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
if (!update_str_ptr)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(2));
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
JUMPHERE(jump2);
if (update_str_ptr)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, RETURN_ADDR, 0);
}
else if (max >= 0x800)
add_jump(compiler, (max < 0x10000) ? &common->utfreadchar16 : &common->utfreadchar, JUMP(SLJIT_FAST_CALL));
else if (max < 128)
{
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP1), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
}
else
{
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
if (!update_str_ptr)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
else
OP1(SLJIT_MOV_U8, RETURN_ADDR, 0, SLJIT_MEM1(TMP1), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
if (update_str_ptr)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, RETURN_ADDR, 0);
}
JUMPHERE(jump);
}
#endif
#if defined SUPPORT_UTF && defined COMPILE_PCRE16
if (common->utf)
{
if (max >= 0x10000)
{
OP2(SLJIT_SUB, TMP2, 0, TMP1, 0, SLJIT_IMM, 0xd800);
jump = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 0xdc00 - 0xd800 - 1);
/* TMP2 contains the high surrogate. */
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
OP2(SLJIT_ADD, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x40);
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, 10);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3ff);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
JUMPHERE(jump);
return;
}
if (max < 0xd800 && !update_str_ptr) return;
/* Skip low surrogate if necessary. */
OP2(SLJIT_SUB, TMP2, 0, TMP1, 0, SLJIT_IMM, 0xd800);
jump = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 0xdc00 - 0xd800 - 1);
if (update_str_ptr)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
if (max >= 0xd800)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, 0x10000);
JUMPHERE(jump);
}
#endif
}
static SLJIT_INLINE void read_char(compiler_common *common)
{
read_char_range(common, 0, READ_CHAR_MAX, TRUE);
}
static void read_char8_type(compiler_common *common, BOOL update_str_ptr)
{
/* Reads the character type into TMP1, updates STR_PTR. Does not check STR_END. */
DEFINE_COMPILER;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
struct sljit_jump *jump;
#endif
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
struct sljit_jump *jump2;
#endif
SLJIT_UNUSED_ARG(update_str_ptr);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), 0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf)
{
/* This can be an extra read in some situations, but hopefully
it is needed in most cases. */
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP2), common->ctypes);
jump = CMP(SLJIT_LESS, TMP2, 0, SLJIT_IMM, 0xc0);
if (!update_str_ptr)
{
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP2, 0, TMP2, 0, TMP1, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, 0);
jump2 = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 255);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP2), common->ctypes);
JUMPHERE(jump2);
}
else
add_jump(compiler, &common->utfreadtype8, JUMP(SLJIT_FAST_CALL));
JUMPHERE(jump);
return;
}
#endif /* SUPPORT_UTF && COMPILE_PCRE8 */
#if !defined COMPILE_PCRE8
/* The ctypes array contains only 256 values. */
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, 0);
jump = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 255);
#endif
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP2), common->ctypes);
#if !defined COMPILE_PCRE8
JUMPHERE(jump);
#endif
#if defined SUPPORT_UTF && defined COMPILE_PCRE16
if (common->utf && update_str_ptr)
{
/* Skip low surrogate if necessary. */
OP2(SLJIT_SUB, TMP2, 0, TMP2, 0, SLJIT_IMM, 0xd800);
jump = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 0xdc00 - 0xd800 - 1);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
JUMPHERE(jump);
}
#endif /* SUPPORT_UTF && COMPILE_PCRE16 */
}
static void skip_char_back(compiler_common *common)
{
/* Goes one character back. Affects STR_PTR and TMP1. Does not check begin. */
DEFINE_COMPILER;
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
#if defined COMPILE_PCRE8
struct sljit_label *label;
if (common->utf)
{
label = LABEL();
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), -IN_UCHARS(1));
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xc0);
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0x80, label);
return;
}
#elif defined COMPILE_PCRE16
if (common->utf)
{
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), -IN_UCHARS(1));
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
/* Skip low surrogate if necessary. */
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xfc00);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0xdc00);
OP_FLAGS(SLJIT_MOV, TMP1, 0, SLJIT_EQUAL);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
return;
}
#endif /* COMPILE_PCRE[8|16] */
#endif /* SUPPORT_UTF && !COMPILE_PCRE32 */
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
}
static void check_newlinechar(compiler_common *common, int nltype, jump_list **backtracks, BOOL jumpifmatch)
{
/* Character comes in TMP1. Checks if it is a newline. TMP2 may be destroyed. */
DEFINE_COMPILER;
struct sljit_jump *jump;
if (nltype == NLTYPE_ANY)
{
add_jump(compiler, &common->anynewline, JUMP(SLJIT_FAST_CALL));
sljit_set_current_flags(compiler, SLJIT_SET_Z);
add_jump(compiler, backtracks, JUMP(jumpifmatch ? SLJIT_NOT_ZERO : SLJIT_ZERO));
}
else if (nltype == NLTYPE_ANYCRLF)
{
if (jumpifmatch)
{
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_CR));
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_NL));
}
else
{
jump = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_CR);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_NL));
JUMPHERE(jump);
}
}
else
{
SLJIT_ASSERT(nltype == NLTYPE_FIXED && common->newline < 256);
add_jump(compiler, backtracks, CMP(jumpifmatch ? SLJIT_EQUAL : SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, common->newline));
}
}
#ifdef SUPPORT_UTF
#if defined COMPILE_PCRE8
static void do_utfreadchar(compiler_common *common)
{
/* Fast decoding a UTF-8 character. TMP1 contains the first byte
of the character (>= 0xc0). Return char value in TMP1, length in TMP2. */
DEFINE_COMPILER;
struct sljit_jump *jump;
sljit_emit_fast_enter(compiler, RETURN_ADDR, 0);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
/* Searching for the first zero. */
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x800);
jump = JUMP(SLJIT_NOT_ZERO);
/* Two byte sequence. */
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, IN_UCHARS(2));
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
JUMPHERE(jump);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
OP2(SLJIT_XOR, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x800);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x10000);
jump = JUMP(SLJIT_NOT_ZERO);
/* Three byte sequence. */
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(2));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, IN_UCHARS(3));
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
/* Four byte sequence. */
JUMPHERE(jump);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(2));
OP2(SLJIT_XOR, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x10000);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(3));
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, IN_UCHARS(4));
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
}
static void do_utfreadchar16(compiler_common *common)
{
/* Fast decoding a UTF-8 character. TMP1 contains the first byte
of the character (>= 0xc0). Return value in TMP1. */
DEFINE_COMPILER;
struct sljit_jump *jump;
sljit_emit_fast_enter(compiler, RETURN_ADDR, 0);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
/* Searching for the first zero. */
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x800);
jump = JUMP(SLJIT_NOT_ZERO);
/* Two byte sequence. */
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
JUMPHERE(jump);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x400);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_NOT_ZERO);
/* This code runs only in 8 bit mode. No need to shift the value. */
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
OP2(SLJIT_XOR, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x800);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
/* Three byte sequence. */
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(2));
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
}
static void do_utfreadtype8(compiler_common *common)
{
/* Fast decoding a UTF-8 character type. TMP2 contains the first byte
of the character (>= 0xc0). Return value in TMP1. */
DEFINE_COMPILER;
struct sljit_jump *jump;
struct sljit_jump *compare;
sljit_emit_fast_enter(compiler, RETURN_ADDR, 0);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP2, 0, SLJIT_IMM, 0x20);
jump = JUMP(SLJIT_NOT_ZERO);
/* Two byte sequence. */
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 0x1f);
/* The upper 5 bits are known at this point. */
compare = CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, 0x3);
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, 6);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x3f);
OP2(SLJIT_OR, TMP2, 0, TMP2, 0, TMP1, 0);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP2), common->ctypes);
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
JUMPHERE(compare);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, 0);
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
/* We only have types for characters less than 256. */
JUMPHERE(jump);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP2), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, 0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
}
#endif /* COMPILE_PCRE8 */
#endif /* SUPPORT_UTF */
#ifdef SUPPORT_UCP
/* UCD_BLOCK_SIZE must be 128 (see the assert below). */
#define UCD_BLOCK_MASK 127
#define UCD_BLOCK_SHIFT 7
static void do_getucd(compiler_common *common)
{
/* Search the UCD record for the character comes in TMP1.
Returns chartype in TMP1 and UCD offset in TMP2. */
DEFINE_COMPILER;
#ifdef COMPILE_PCRE32
struct sljit_jump *jump;
#endif
#if defined SLJIT_DEBUG && SLJIT_DEBUG
/* dummy_ucd_record */
const ucd_record *record = GET_UCD(INVALID_UTF_CHAR);
SLJIT_ASSERT(record->script == ucp_Common && record->chartype == ucp_Cn && record->gbprop == ucp_gbOther);
SLJIT_ASSERT(record->caseset == 0 && record->other_case == 0);
#endif
SLJIT_ASSERT(UCD_BLOCK_SIZE == 128 && sizeof(ucd_record) == 8);
sljit_emit_fast_enter(compiler, RETURN_ADDR, 0);
#ifdef COMPILE_PCRE32
if (!common->utf)
{
jump = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0x10ffff + 1);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, INVALID_UTF_CHAR);
JUMPHERE(jump);
}
#endif
OP2(SLJIT_LSHR, TMP2, 0, TMP1, 0, SLJIT_IMM, UCD_BLOCK_SHIFT);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP2), (sljit_sw)PRIV(ucd_stage1));
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, UCD_BLOCK_MASK);
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, UCD_BLOCK_SHIFT);
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, TMP2, 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, (sljit_sw)PRIV(ucd_stage2));
OP1(SLJIT_MOV_U16, TMP2, 0, SLJIT_MEM2(TMP2, TMP1), 1);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, (sljit_sw)PRIV(ucd_records) + SLJIT_OFFSETOF(ucd_record, chartype));
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM2(TMP1, TMP2), 3);
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
}
#endif
static SLJIT_INLINE struct sljit_label *mainloop_entry(compiler_common *common, BOOL hascrorlf)
{
DEFINE_COMPILER;
struct sljit_label *mainloop;
struct sljit_label *newlinelabel = NULL;
struct sljit_jump *start;
struct sljit_jump *end = NULL;
struct sljit_jump *end2 = NULL;
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
struct sljit_jump *singlechar;
#endif
jump_list *newline = NULL;
BOOL newlinecheck = FALSE;
BOOL readuchar = FALSE;
if (!(hascrorlf || (common->match_end_ptr != 0)) &&
(common->nltype == NLTYPE_ANY || common->nltype == NLTYPE_ANYCRLF || common->newline > 255))
newlinecheck = TRUE;
if (common->match_end_ptr != 0)
{
/* Search for the end of the first line. */
OP1(SLJIT_MOV, TMP3, 0, STR_PTR, 0);
if (common->nltype == NLTYPE_FIXED && common->newline > 255)
{
mainloop = LABEL();
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
end = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-1));
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff, mainloop);
CMPTO(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, common->newline & 0xff, mainloop);
JUMPHERE(end);
OP2(SLJIT_SUB, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
}
else
{
end = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
mainloop = LABEL();
/* Continual stores does not cause data dependency. */
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr, STR_PTR, 0);
read_char_range(common, common->nlmin, common->nlmax, TRUE);
check_newlinechar(common, common->nltype, &newline, TRUE);
CMPTO(SLJIT_LESS, STR_PTR, 0, STR_END, 0, mainloop);
JUMPHERE(end);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr, STR_PTR, 0);
set_jumps(newline, LABEL());
}
OP1(SLJIT_MOV, STR_PTR, 0, TMP3, 0);
}
start = JUMP(SLJIT_JUMP);
if (newlinecheck)
{
newlinelabel = LABEL();
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
end = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, common->newline & 0xff);
OP_FLAGS(SLJIT_MOV, TMP1, 0, SLJIT_EQUAL);
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, UCHAR_SHIFT);
#endif
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
end2 = JUMP(SLJIT_JUMP);
}
mainloop = LABEL();
/* Increasing the STR_PTR here requires one less jump in the most common case. */
#ifdef SUPPORT_UTF
if (common->utf) readuchar = TRUE;
#endif
if (newlinecheck) readuchar = TRUE;
if (readuchar)
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
if (newlinecheck)
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff, newlinelabel);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
#if defined COMPILE_PCRE8
if (common->utf)
{
singlechar = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xc0);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
JUMPHERE(singlechar);
}
#elif defined COMPILE_PCRE16
if (common->utf)
{
singlechar = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xd800);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xfc00);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0xd800);
OP_FLAGS(SLJIT_MOV, TMP1, 0, SLJIT_EQUAL);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
JUMPHERE(singlechar);
}
#endif /* COMPILE_PCRE[8|16] */
#endif /* SUPPORT_UTF && !COMPILE_PCRE32 */
JUMPHERE(start);
if (newlinecheck)
{
JUMPHERE(end);
JUMPHERE(end2);
}
return mainloop;
}
#define MAX_N_CHARS 16
#define MAX_DIFF_CHARS 6
static SLJIT_INLINE void add_prefix_char(pcre_uchar chr, pcre_uchar *chars)
{
pcre_uchar i, len;
len = chars[0];
if (len == 255)
return;
if (len == 0)
{
chars[0] = 1;
chars[1] = chr;
return;
}
for (i = len; i > 0; i--)
if (chars[i] == chr)
return;
if (len >= MAX_DIFF_CHARS - 1)
{
chars[0] = 255;
return;
}
len++;
chars[len] = chr;
chars[0] = len;
}
static int scan_prefix(compiler_common *common, pcre_uchar *cc, pcre_uchar *chars, int max_chars, sljit_u32 *rec_count)
{
/* Recursive function, which scans prefix literals. */
BOOL last, any, class, caseless;
int len, repeat, len_save, consumed = 0;
sljit_u32 chr; /* Any unicode character. */
sljit_u8 *bytes, *bytes_end, byte;
pcre_uchar *alternative, *cc_save, *oc;
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
pcre_uchar othercase[8];
#elif defined SUPPORT_UTF && defined COMPILE_PCRE16
pcre_uchar othercase[2];
#else
pcre_uchar othercase[1];
#endif
repeat = 1;
while (TRUE)
{
if (*rec_count == 0)
return 0;
(*rec_count)--;
last = TRUE;
any = FALSE;
class = FALSE;
caseless = FALSE;
switch (*cc)
{
case OP_CHARI:
caseless = TRUE;
case OP_CHAR:
last = FALSE;
cc++;
break;
case OP_SOD:
case OP_SOM:
case OP_SET_SOM:
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
case OP_EODN:
case OP_EOD:
case OP_CIRC:
case OP_CIRCM:
case OP_DOLL:
case OP_DOLLM:
/* Zero width assertions. */
cc++;
continue;
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
cc = bracketend(cc);
continue;
case OP_PLUSI:
case OP_MINPLUSI:
case OP_POSPLUSI:
caseless = TRUE;
case OP_PLUS:
case OP_MINPLUS:
case OP_POSPLUS:
cc++;
break;
case OP_EXACTI:
caseless = TRUE;
case OP_EXACT:
repeat = GET2(cc, 1);
last = FALSE;
cc += 1 + IMM2_SIZE;
break;
case OP_QUERYI:
case OP_MINQUERYI:
case OP_POSQUERYI:
caseless = TRUE;
case OP_QUERY:
case OP_MINQUERY:
case OP_POSQUERY:
len = 1;
cc++;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(*cc)) len += GET_EXTRALEN(*cc);
#endif
max_chars = scan_prefix(common, cc + len, chars, max_chars, rec_count);
if (max_chars == 0)
return consumed;
last = FALSE;
break;
case OP_KET:
cc += 1 + LINK_SIZE;
continue;
case OP_ALT:
cc += GET(cc, 1);
continue;
case OP_ONCE:
case OP_ONCE_NC:
case OP_BRA:
case OP_BRAPOS:
case OP_CBRA:
case OP_CBRAPOS:
alternative = cc + GET(cc, 1);
while (*alternative == OP_ALT)
{
max_chars = scan_prefix(common, alternative + 1 + LINK_SIZE, chars, max_chars, rec_count);
if (max_chars == 0)
return consumed;
alternative += GET(alternative, 1);
}
if (*cc == OP_CBRA || *cc == OP_CBRAPOS)
cc += IMM2_SIZE;
cc += 1 + LINK_SIZE;
continue;
case OP_CLASS:
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf && !is_char7_bitset((const sljit_u8 *)(cc + 1), FALSE))
return consumed;
#endif
class = TRUE;
break;
case OP_NCLASS:
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf) return consumed;
#endif
class = TRUE;
break;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf) return consumed;
#endif
any = TRUE;
cc += GET(cc, 1);
break;
#endif
case OP_DIGIT:
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf && !is_char7_bitset((const sljit_u8 *)common->ctypes - cbit_length + cbit_digit, FALSE))
return consumed;
#endif
any = TRUE;
cc++;
break;
case OP_WHITESPACE:
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf && !is_char7_bitset((const sljit_u8 *)common->ctypes - cbit_length + cbit_space, FALSE))
return consumed;
#endif
any = TRUE;
cc++;
break;
case OP_WORDCHAR:
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf && !is_char7_bitset((const sljit_u8 *)common->ctypes - cbit_length + cbit_word, FALSE))
return consumed;
#endif
any = TRUE;
cc++;
break;
case OP_NOT:
case OP_NOTI:
cc++;
/* Fall through. */
case OP_NOT_DIGIT:
case OP_NOT_WHITESPACE:
case OP_NOT_WORDCHAR:
case OP_ANY:
case OP_ALLANY:
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf) return consumed;
#endif
any = TRUE;
cc++;
break;
#ifdef SUPPORT_UTF
case OP_NOTPROP:
case OP_PROP:
#ifndef COMPILE_PCRE32
if (common->utf) return consumed;
#endif
any = TRUE;
cc += 1 + 2;
break;
#endif
case OP_TYPEEXACT:
repeat = GET2(cc, 1);
cc += 1 + IMM2_SIZE;
continue;
case OP_NOTEXACT:
case OP_NOTEXACTI:
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf) return consumed;
#endif
any = TRUE;
repeat = GET2(cc, 1);
cc += 1 + IMM2_SIZE + 1;
break;
default:
return consumed;
}
if (any)
{
do
{
chars[0] = 255;
consumed++;
if (--max_chars == 0)
return consumed;
chars += MAX_DIFF_CHARS;
}
while (--repeat > 0);
repeat = 1;
continue;
}
if (class)
{
bytes = (sljit_u8*) (cc + 1);
cc += 1 + 32 / sizeof(pcre_uchar);
switch (*cc)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPOSSTAR:
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRPOSQUERY:
max_chars = scan_prefix(common, cc + 1, chars, max_chars, rec_count);
if (max_chars == 0)
return consumed;
break;
default:
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRPOSPLUS:
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSRANGE:
repeat = GET2(cc, 1);
if (repeat <= 0)
return consumed;
break;
}
do
{
if (bytes[31] & 0x80)
chars[0] = 255;
else if (chars[0] != 255)
{
bytes_end = bytes + 32;
chr = 0;
do
{
byte = *bytes++;
SLJIT_ASSERT((chr & 0x7) == 0);
if (byte == 0)
chr += 8;
else
{
do
{
if ((byte & 0x1) != 0)
add_prefix_char(chr, chars);
byte >>= 1;
chr++;
}
while (byte != 0);
chr = (chr + 7) & ~7;
}
}
while (chars[0] != 255 && bytes < bytes_end);
bytes = bytes_end - 32;
}
consumed++;
if (--max_chars == 0)
return consumed;
chars += MAX_DIFF_CHARS;
}
while (--repeat > 0);
switch (*cc)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPOSSTAR:
return consumed;
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRPOSQUERY:
cc++;
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSRANGE:
if (GET2(cc, 1) != GET2(cc, 1 + IMM2_SIZE))
return consumed;
cc += 1 + 2 * IMM2_SIZE;
break;
}
repeat = 1;
continue;
}
len = 1;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(*cc)) len += GET_EXTRALEN(*cc);
#endif
if (caseless && char_has_othercase(common, cc))
{
#ifdef SUPPORT_UTF
if (common->utf)
{
GETCHAR(chr, cc);
if ((int)PRIV(ord2utf)(char_othercase(common, chr), othercase) != len)
return consumed;
}
else
#endif
{
chr = *cc;
othercase[0] = TABLE_GET(chr, common->fcc, chr);
}
}
else
{
caseless = FALSE;
othercase[0] = 0; /* Stops compiler warning - PH */
}
len_save = len;
cc_save = cc;
while (TRUE)
{
oc = othercase;
do
{
chr = *cc;
add_prefix_char(*cc, chars);
if (caseless)
add_prefix_char(*oc, chars);
len--;
consumed++;
if (--max_chars == 0)
return consumed;
chars += MAX_DIFF_CHARS;
cc++;
oc++;
}
while (len > 0);
if (--repeat == 0)
break;
len = len_save;
cc = cc_save;
}
repeat = 1;
if (last)
return consumed;
}
}
#if (defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86) && !(defined SUPPORT_VALGRIND)
static sljit_s32 character_to_int32(pcre_uchar chr)
{
sljit_s32 value = (sljit_s32)chr;
#if defined COMPILE_PCRE8
#define SSE2_COMPARE_TYPE_INDEX 0
return ((unsigned int)value << 24) | ((unsigned int)value << 16) | ((unsigned int)value << 8) | (unsigned int)value;
#elif defined COMPILE_PCRE16
#define SSE2_COMPARE_TYPE_INDEX 1
return ((unsigned int)value << 16) | value;
#elif defined COMPILE_PCRE32
#define SSE2_COMPARE_TYPE_INDEX 2
return value;
#else
#error "Unsupported unit width"
#endif
}
static SLJIT_INLINE void fast_forward_first_char2_sse2(compiler_common *common, pcre_uchar char1, pcre_uchar char2)
{
DEFINE_COMPILER;
struct sljit_label *start;
struct sljit_jump *quit[3];
struct sljit_jump *nomatch;
sljit_u8 instruction[8];
sljit_s32 tmp1_ind = sljit_get_register_index(TMP1);
sljit_s32 tmp2_ind = sljit_get_register_index(TMP2);
sljit_s32 str_ptr_ind = sljit_get_register_index(STR_PTR);
BOOL load_twice = FALSE;
pcre_uchar bit;
bit = char1 ^ char2;
if (!is_powerof2(bit))
bit = 0;
if ((char1 != char2) && bit == 0)
load_twice = TRUE;
quit[0] = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
/* First part (unaligned start) */
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, character_to_int32(char1 | bit));
SLJIT_ASSERT(tmp1_ind < 8 && tmp2_ind == 1);
/* MOVD xmm, r/m32 */
instruction[0] = 0x66;
instruction[1] = 0x0f;
instruction[2] = 0x6e;
instruction[3] = 0xc0 | (2 << 3) | tmp1_ind;
sljit_emit_op_custom(compiler, instruction, 4);
if (char1 != char2)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, character_to_int32(bit != 0 ? bit : char2));
/* MOVD xmm, r/m32 */
instruction[3] = 0xc0 | (3 << 3) | tmp1_ind;
sljit_emit_op_custom(compiler, instruction, 4);
}
/* PSHUFD xmm1, xmm2/m128, imm8 */
instruction[2] = 0x70;
instruction[3] = 0xc0 | (2 << 3) | 2;
instruction[4] = 0;
sljit_emit_op_custom(compiler, instruction, 5);
if (char1 != char2)
{
/* PSHUFD xmm1, xmm2/m128, imm8 */
instruction[3] = 0xc0 | (3 << 3) | 3;
instruction[4] = 0;
sljit_emit_op_custom(compiler, instruction, 5);
}
OP2(SLJIT_AND, TMP2, 0, STR_PTR, 0, SLJIT_IMM, 0xf);
OP2(SLJIT_AND, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, ~0xf);
/* MOVDQA xmm1, xmm2/m128 */
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
if (str_ptr_ind < 8)
{
instruction[2] = 0x6f;
instruction[3] = (0 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 4);
if (load_twice)
{
instruction[3] = (1 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 4);
}
}
else
{
instruction[1] = 0x41;
instruction[2] = 0x0f;
instruction[3] = 0x6f;
instruction[4] = (0 << 3) | (str_ptr_ind & 0x7);
sljit_emit_op_custom(compiler, instruction, 5);
if (load_twice)
{
instruction[4] = (1 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 5);
}
instruction[1] = 0x0f;
}
#else
instruction[2] = 0x6f;
instruction[3] = (0 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 4);
if (load_twice)
{
instruction[3] = (1 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 4);
}
#endif
if (bit != 0)
{
/* POR xmm1, xmm2/m128 */
instruction[2] = 0xeb;
instruction[3] = 0xc0 | (0 << 3) | 3;
sljit_emit_op_custom(compiler, instruction, 4);
}
/* PCMPEQB/W/D xmm1, xmm2/m128 */
instruction[2] = 0x74 + SSE2_COMPARE_TYPE_INDEX;
instruction[3] = 0xc0 | (0 << 3) | 2;
sljit_emit_op_custom(compiler, instruction, 4);
if (load_twice)
{
instruction[3] = 0xc0 | (1 << 3) | 3;
sljit_emit_op_custom(compiler, instruction, 4);
}
/* PMOVMSKB reg, xmm */
instruction[2] = 0xd7;
instruction[3] = 0xc0 | (tmp1_ind << 3) | 0;
sljit_emit_op_custom(compiler, instruction, 4);
if (load_twice)
{
OP1(SLJIT_MOV, RETURN_ADDR, 0, TMP2, 0);
instruction[3] = 0xc0 | (tmp2_ind << 3) | 1;
sljit_emit_op_custom(compiler, instruction, 4);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
OP1(SLJIT_MOV, TMP2, 0, RETURN_ADDR, 0);
}
OP2(SLJIT_ASHR, TMP1, 0, TMP1, 0, TMP2, 0);
/* BSF r32, r/m32 */
instruction[0] = 0x0f;
instruction[1] = 0xbc;
instruction[2] = 0xc0 | (tmp1_ind << 3) | tmp1_ind;
sljit_emit_op_custom(compiler, instruction, 3);
sljit_set_current_flags(compiler, SLJIT_SET_Z);
nomatch = JUMP(SLJIT_ZERO);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
quit[1] = JUMP(SLJIT_JUMP);
JUMPHERE(nomatch);
start = LABEL();
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, 16);
quit[2] = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
/* Second part (aligned) */
instruction[0] = 0x66;
instruction[1] = 0x0f;
/* MOVDQA xmm1, xmm2/m128 */
#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
if (str_ptr_ind < 8)
{
instruction[2] = 0x6f;
instruction[3] = (0 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 4);
if (load_twice)
{
instruction[3] = (1 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 4);
}
}
else
{
instruction[1] = 0x41;
instruction[2] = 0x0f;
instruction[3] = 0x6f;
instruction[4] = (0 << 3) | (str_ptr_ind & 0x7);
sljit_emit_op_custom(compiler, instruction, 5);
if (load_twice)
{
instruction[4] = (1 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 5);
}
instruction[1] = 0x0f;
}
#else
instruction[2] = 0x6f;
instruction[3] = (0 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 4);
if (load_twice)
{
instruction[3] = (1 << 3) | str_ptr_ind;
sljit_emit_op_custom(compiler, instruction, 4);
}
#endif
if (bit != 0)
{
/* POR xmm1, xmm2/m128 */
instruction[2] = 0xeb;
instruction[3] = 0xc0 | (0 << 3) | 3;
sljit_emit_op_custom(compiler, instruction, 4);
}
/* PCMPEQB/W/D xmm1, xmm2/m128 */
instruction[2] = 0x74 + SSE2_COMPARE_TYPE_INDEX;
instruction[3] = 0xc0 | (0 << 3) | 2;
sljit_emit_op_custom(compiler, instruction, 4);
if (load_twice)
{
instruction[3] = 0xc0 | (1 << 3) | 3;
sljit_emit_op_custom(compiler, instruction, 4);
}
/* PMOVMSKB reg, xmm */
instruction[2] = 0xd7;
instruction[3] = 0xc0 | (tmp1_ind << 3) | 0;
sljit_emit_op_custom(compiler, instruction, 4);
if (load_twice)
{
instruction[3] = 0xc0 | (tmp2_ind << 3) | 1;
sljit_emit_op_custom(compiler, instruction, 4);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, TMP2, 0);
}
/* BSF r32, r/m32 */
instruction[0] = 0x0f;
instruction[1] = 0xbc;
instruction[2] = 0xc0 | (tmp1_ind << 3) | tmp1_ind;
sljit_emit_op_custom(compiler, instruction, 3);
sljit_set_current_flags(compiler, SLJIT_SET_Z);
JUMPTO(SLJIT_ZERO, start);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
start = LABEL();
SET_LABEL(quit[0], start);
SET_LABEL(quit[1], start);
SET_LABEL(quit[2], start);
}
#undef SSE2_COMPARE_TYPE_INDEX
#endif
static void fast_forward_first_char2(compiler_common *common, pcre_uchar char1, pcre_uchar char2, sljit_s32 offset)
{
DEFINE_COMPILER;
struct sljit_label *start;
struct sljit_jump *quit;
struct sljit_jump *found;
pcre_uchar mask;
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
struct sljit_label *utf_start = NULL;
struct sljit_jump *utf_quit = NULL;
#endif
BOOL has_match_end = (common->match_end_ptr != 0);
if (offset > 0)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(offset));
if (has_match_end)
{
OP1(SLJIT_MOV, TMP3, 0, STR_END, 0);
OP2(SLJIT_ADD, STR_END, 0, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr, SLJIT_IMM, IN_UCHARS(offset + 1));
OP2(SLJIT_SUB | SLJIT_SET_GREATER, SLJIT_UNUSED, 0, STR_END, 0, TMP3, 0);
sljit_emit_cmov(compiler, SLJIT_GREATER, STR_END, TMP3, 0);
}
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf && offset > 0)
utf_start = LABEL();
#endif
#if (defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86) && !(defined SUPPORT_VALGRIND)
/* SSE2 accelerated first character search. */
if (sljit_has_cpu_feature(SLJIT_HAS_SSE2))
{
fast_forward_first_char2_sse2(common, char1, char2);
SLJIT_ASSERT(common->mode == JIT_COMPILE || offset == 0);
if (common->mode == JIT_COMPILE)
{
/* In complete mode, we don't need to run a match when STR_PTR == STR_END. */
SLJIT_ASSERT(common->forced_quit_label == NULL);
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, PCRE_ERROR_NOMATCH);
add_jump(compiler, &common->forced_quit, CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0));
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf && offset > 0)
{
SLJIT_ASSERT(common->mode == JIT_COMPILE);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-offset));
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
#if defined COMPILE_PCRE8
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xc0);
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0x80, utf_start);
#elif defined COMPILE_PCRE16
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xfc00);
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0xdc00, utf_start);
#else
#error "Unknown code width"
#endif
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
}
#endif
if (offset > 0)
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(offset));
}
else
{
OP2(SLJIT_SUB | SLJIT_SET_GREATER_EQUAL, SLJIT_UNUSED, 0, STR_PTR, 0, STR_END, 0);
if (has_match_end)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr);
sljit_emit_cmov(compiler, SLJIT_GREATER_EQUAL, STR_PTR, TMP1, 0);
}
else
sljit_emit_cmov(compiler, SLJIT_GREATER_EQUAL, STR_PTR, STR_END, 0);
}
if (has_match_end)
OP1(SLJIT_MOV, STR_END, 0, TMP3, 0);
return;
}
#endif
quit = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
start = LABEL();
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
if (char1 == char2)
found = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, char1);
else
{
mask = char1 ^ char2;
if (is_powerof2(mask))
{
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, mask);
found = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, char1 | mask);
}
else
{
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, char1);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, char2);
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_EQUAL);
found = JUMP(SLJIT_NOT_ZERO);
}
}
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
CMPTO(SLJIT_LESS, STR_PTR, 0, STR_END, 0, start);
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf && offset > 0)
utf_quit = JUMP(SLJIT_JUMP);
#endif
JUMPHERE(found);
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf && offset > 0)
{
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-offset));
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
#if defined COMPILE_PCRE8
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xc0);
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0x80, utf_start);
#elif defined COMPILE_PCRE16
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xfc00);
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0xdc00, utf_start);
#else
#error "Unknown code width"
#endif
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
JUMPHERE(utf_quit);
}
#endif
JUMPHERE(quit);
if (has_match_end)
{
quit = CMP(SLJIT_LESS, STR_PTR, 0, STR_END, 0);
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr);
if (offset > 0)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(offset));
JUMPHERE(quit);
OP1(SLJIT_MOV, STR_END, 0, TMP3, 0);
}
if (offset > 0)
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(offset));
}
static SLJIT_INLINE BOOL fast_forward_first_n_chars(compiler_common *common)
{
DEFINE_COMPILER;
struct sljit_label *start;
struct sljit_jump *quit;
struct sljit_jump *match;
/* bytes[0] represent the number of characters between 0
and MAX_N_BYTES - 1, 255 represents any character. */
pcre_uchar chars[MAX_N_CHARS * MAX_DIFF_CHARS];
sljit_s32 offset;
pcre_uchar mask;
pcre_uchar *char_set, *char_set_end;
int i, max, from;
int range_right = -1, range_len;
sljit_u8 *update_table = NULL;
BOOL in_range;
sljit_u32 rec_count;
for (i = 0; i < MAX_N_CHARS; i++)
chars[i * MAX_DIFF_CHARS] = 0;
rec_count = 10000;
max = scan_prefix(common, common->start, chars, MAX_N_CHARS, &rec_count);
if (max < 1)
return FALSE;
in_range = FALSE;
/* Prevent compiler "uninitialized" warning */
from = 0;
range_len = 4 /* minimum length */ - 1;
for (i = 0; i <= max; i++)
{
if (in_range && (i - from) > range_len && (chars[(i - 1) * MAX_DIFF_CHARS] < 255))
{
range_len = i - from;
range_right = i - 1;
}
if (i < max && chars[i * MAX_DIFF_CHARS] < 255)
{
SLJIT_ASSERT(chars[i * MAX_DIFF_CHARS] > 0);
if (!in_range)
{
in_range = TRUE;
from = i;
}
}
else
in_range = FALSE;
}
if (range_right >= 0)
{
update_table = (sljit_u8 *)allocate_read_only_data(common, 256);
if (update_table == NULL)
return TRUE;
memset(update_table, IN_UCHARS(range_len), 256);
for (i = 0; i < range_len; i++)
{
char_set = chars + ((range_right - i) * MAX_DIFF_CHARS);
SLJIT_ASSERT(char_set[0] > 0 && char_set[0] < 255);
char_set_end = char_set + char_set[0];
char_set++;
while (char_set <= char_set_end)
{
if (update_table[(*char_set) & 0xff] > IN_UCHARS(i))
update_table[(*char_set) & 0xff] = IN_UCHARS(i);
char_set++;
}
}
}
offset = -1;
/* Scan forward. */
for (i = 0; i < max; i++)
{
if (offset == -1)
{
if (chars[i * MAX_DIFF_CHARS] <= 2)
offset = i;
}
else if (chars[offset * MAX_DIFF_CHARS] == 2 && chars[i * MAX_DIFF_CHARS] <= 2)
{
if (chars[i * MAX_DIFF_CHARS] == 1)
offset = i;
else
{
mask = chars[offset * MAX_DIFF_CHARS + 1] ^ chars[offset * MAX_DIFF_CHARS + 2];
if (!is_powerof2(mask))
{
mask = chars[i * MAX_DIFF_CHARS + 1] ^ chars[i * MAX_DIFF_CHARS + 2];
if (is_powerof2(mask))
offset = i;
}
}
}
}
if (range_right < 0)
{
if (offset < 0)
return FALSE;
SLJIT_ASSERT(chars[offset * MAX_DIFF_CHARS] >= 1 && chars[offset * MAX_DIFF_CHARS] <= 2);
/* Works regardless the value is 1 or 2. */
mask = chars[offset * MAX_DIFF_CHARS + chars[offset * MAX_DIFF_CHARS]];
fast_forward_first_char2(common, chars[offset * MAX_DIFF_CHARS + 1], mask, offset);
return TRUE;
}
if (range_right == offset)
offset = -1;
SLJIT_ASSERT(offset == -1 || (chars[offset * MAX_DIFF_CHARS] >= 1 && chars[offset * MAX_DIFF_CHARS] <= 2));
max -= 1;
SLJIT_ASSERT(max > 0);
if (common->match_end_ptr != 0)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr);
OP1(SLJIT_MOV, TMP3, 0, STR_END, 0);
OP2(SLJIT_SUB, STR_END, 0, STR_END, 0, SLJIT_IMM, IN_UCHARS(max));
quit = CMP(SLJIT_LESS_EQUAL, STR_END, 0, TMP1, 0);
OP1(SLJIT_MOV, STR_END, 0, TMP1, 0);
JUMPHERE(quit);
}
else
OP2(SLJIT_SUB, STR_END, 0, STR_END, 0, SLJIT_IMM, IN_UCHARS(max));
SLJIT_ASSERT(range_right >= 0);
#if !(defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
OP1(SLJIT_MOV, RETURN_ADDR, 0, SLJIT_IMM, (sljit_sw)update_table);
#endif
start = LABEL();
quit = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
#if defined COMPILE_PCRE8 || (defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(range_right));
#else
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(range_right + 1) - 1);
#endif
#if !(defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM2(RETURN_ADDR, TMP1), 0);
#else
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)update_table);
#endif
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, 0, start);
if (offset >= 0)
{
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(offset));
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
if (chars[offset * MAX_DIFF_CHARS] == 1)
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, chars[offset * MAX_DIFF_CHARS + 1], start);
else
{
mask = chars[offset * MAX_DIFF_CHARS + 1] ^ chars[offset * MAX_DIFF_CHARS + 2];
if (is_powerof2(mask))
{
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, mask);
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, chars[offset * MAX_DIFF_CHARS + 1] | mask, start);
}
else
{
match = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, chars[offset * MAX_DIFF_CHARS + 1]);
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, chars[offset * MAX_DIFF_CHARS + 2], start);
JUMPHERE(match);
}
}
}
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf && offset != 0)
{
if (offset < 0)
{
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
}
else
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-1));
#if defined COMPILE_PCRE8
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xc0);
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0x80, start);
#elif defined COMPILE_PCRE16
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xfc00);
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0xdc00, start);
#else
#error "Unknown code width"
#endif
if (offset < 0)
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
}
#endif
if (offset >= 0)
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
JUMPHERE(quit);
if (common->match_end_ptr != 0)
{
if (range_right >= 0)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr);
OP1(SLJIT_MOV, STR_END, 0, TMP3, 0);
if (range_right >= 0)
{
quit = CMP(SLJIT_LESS_EQUAL, STR_PTR, 0, TMP1, 0);
OP1(SLJIT_MOV, STR_PTR, 0, TMP1, 0);
JUMPHERE(quit);
}
}
else
OP2(SLJIT_ADD, STR_END, 0, STR_END, 0, SLJIT_IMM, IN_UCHARS(max));
return TRUE;
}
#undef MAX_N_CHARS
#undef MAX_DIFF_CHARS
static SLJIT_INLINE void fast_forward_first_char(compiler_common *common, pcre_uchar first_char, BOOL caseless)
{
pcre_uchar oc;
oc = first_char;
if (caseless)
{
oc = TABLE_GET(first_char, common->fcc, first_char);
#if defined SUPPORT_UCP && !defined COMPILE_PCRE8
if (first_char > 127 && common->utf)
oc = UCD_OTHERCASE(first_char);
#endif
}
fast_forward_first_char2(common, first_char, oc, 0);
}
static SLJIT_INLINE void fast_forward_newline(compiler_common *common)
{
DEFINE_COMPILER;
struct sljit_label *loop;
struct sljit_jump *lastchar;
struct sljit_jump *firstchar;
struct sljit_jump *quit;
struct sljit_jump *foundcr = NULL;
struct sljit_jump *notfoundnl;
jump_list *newline = NULL;
if (common->match_end_ptr != 0)
{
OP1(SLJIT_MOV, TMP3, 0, STR_END, 0);
OP1(SLJIT_MOV, STR_END, 0, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr);
}
if (common->nltype == NLTYPE_FIXED && common->newline > 255)
{
lastchar = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, str));
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, begin));
firstchar = CMP(SLJIT_LESS_EQUAL, STR_PTR, 0, TMP2, 0);
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, IN_UCHARS(2));
OP2(SLJIT_SUB | SLJIT_SET_GREATER_EQUAL, SLJIT_UNUSED, 0, STR_PTR, 0, TMP1, 0);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_GREATER_EQUAL);
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, UCHAR_SHIFT);
#endif
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
loop = LABEL();
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
quit = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-2));
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-1));
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff, loop);
CMPTO(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, common->newline & 0xff, loop);
JUMPHERE(quit);
JUMPHERE(firstchar);
JUMPHERE(lastchar);
if (common->match_end_ptr != 0)
OP1(SLJIT_MOV, STR_END, 0, TMP3, 0);
return;
}
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, str));
firstchar = CMP(SLJIT_LESS_EQUAL, STR_PTR, 0, TMP2, 0);
skip_char_back(common);
loop = LABEL();
common->ff_newline_shortcut = loop;
read_char_range(common, common->nlmin, common->nlmax, TRUE);
lastchar = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
if (common->nltype == NLTYPE_ANY || common->nltype == NLTYPE_ANYCRLF)
foundcr = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_CR);
check_newlinechar(common, common->nltype, &newline, FALSE);
set_jumps(newline, loop);
if (common->nltype == NLTYPE_ANY || common->nltype == NLTYPE_ANYCRLF)
{
quit = JUMP(SLJIT_JUMP);
JUMPHERE(foundcr);
notfoundnl = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, CHAR_NL);
OP_FLAGS(SLJIT_MOV, TMP1, 0, SLJIT_EQUAL);
#if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, UCHAR_SHIFT);
#endif
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
JUMPHERE(notfoundnl);
JUMPHERE(quit);
}
JUMPHERE(lastchar);
JUMPHERE(firstchar);
if (common->match_end_ptr != 0)
OP1(SLJIT_MOV, STR_END, 0, TMP3, 0);
}
static BOOL check_class_ranges(compiler_common *common, const sljit_u8 *bits, BOOL nclass, BOOL invert, jump_list **backtracks);
static SLJIT_INLINE void fast_forward_start_bits(compiler_common *common, const sljit_u8 *start_bits)
{
DEFINE_COMPILER;
struct sljit_label *start;
struct sljit_jump *quit;
struct sljit_jump *found = NULL;
jump_list *matches = NULL;
#ifndef COMPILE_PCRE8
struct sljit_jump *jump;
#endif
if (common->match_end_ptr != 0)
{
OP1(SLJIT_MOV, RETURN_ADDR, 0, STR_END, 0);
OP1(SLJIT_MOV, STR_END, 0, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr);
}
start = LABEL();
quit = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
#ifdef SUPPORT_UTF
if (common->utf)
OP1(SLJIT_MOV, TMP3, 0, TMP1, 0);
#endif
if (!check_class_ranges(common, start_bits, (start_bits[31] & 0x80) != 0, TRUE, &matches))
{
#ifndef COMPILE_PCRE8
jump = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 255);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, 255);
JUMPHERE(jump);
#endif
OP2(SLJIT_AND, TMP2, 0, TMP1, 0, SLJIT_IMM, 0x7);
OP2(SLJIT_LSHR, TMP1, 0, TMP1, 0, SLJIT_IMM, 3);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)start_bits);
OP2(SLJIT_SHL, TMP2, 0, SLJIT_IMM, 1, TMP2, 0);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, TMP2, 0);
found = JUMP(SLJIT_NOT_ZERO);
}
#ifdef SUPPORT_UTF
if (common->utf)
OP1(SLJIT_MOV, TMP1, 0, TMP3, 0);
#endif
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
#ifdef SUPPORT_UTF
#if defined COMPILE_PCRE8
if (common->utf)
{
CMPTO(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xc0, start);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
}
#elif defined COMPILE_PCRE16
if (common->utf)
{
CMPTO(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xd800, start);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xfc00);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0xd800);
OP_FLAGS(SLJIT_MOV, TMP1, 0, SLJIT_EQUAL);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
}
#endif /* COMPILE_PCRE[8|16] */
#endif /* SUPPORT_UTF */
JUMPTO(SLJIT_JUMP, start);
if (found != NULL)
JUMPHERE(found);
if (matches != NULL)
set_jumps(matches, LABEL());
JUMPHERE(quit);
if (common->match_end_ptr != 0)
OP1(SLJIT_MOV, STR_END, 0, RETURN_ADDR, 0);
}
static SLJIT_INLINE struct sljit_jump *search_requested_char(compiler_common *common, pcre_uchar req_char, BOOL caseless, BOOL has_firstchar)
{
DEFINE_COMPILER;
struct sljit_label *loop;
struct sljit_jump *toolong;
struct sljit_jump *alreadyfound;
struct sljit_jump *found;
struct sljit_jump *foundoc = NULL;
struct sljit_jump *notfound;
sljit_u32 oc, bit;
SLJIT_ASSERT(common->req_char_ptr != 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->req_char_ptr);
OP2(SLJIT_ADD, TMP1, 0, STR_PTR, 0, SLJIT_IMM, REQ_BYTE_MAX);
toolong = CMP(SLJIT_LESS, TMP1, 0, STR_END, 0);
alreadyfound = CMP(SLJIT_LESS, STR_PTR, 0, TMP2, 0);
if (has_firstchar)
OP2(SLJIT_ADD, TMP1, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
else
OP1(SLJIT_MOV, TMP1, 0, STR_PTR, 0);
loop = LABEL();
notfound = CMP(SLJIT_GREATER_EQUAL, TMP1, 0, STR_END, 0);
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(TMP1), 0);
oc = req_char;
if (caseless)
{
oc = TABLE_GET(req_char, common->fcc, req_char);
#if defined SUPPORT_UCP && !(defined COMPILE_PCRE8)
if (req_char > 127 && common->utf)
oc = UCD_OTHERCASE(req_char);
#endif
}
if (req_char == oc)
found = CMP(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, req_char);
else
{
bit = req_char ^ oc;
if (is_powerof2(bit))
{
OP2(SLJIT_OR, TMP2, 0, TMP2, 0, SLJIT_IMM, bit);
found = CMP(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, req_char | bit);
}
else
{
found = CMP(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, req_char);
foundoc = CMP(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, oc);
}
}
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, IN_UCHARS(1));
JUMPTO(SLJIT_JUMP, loop);
JUMPHERE(found);
if (foundoc)
JUMPHERE(foundoc);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->req_char_ptr, TMP1, 0);
JUMPHERE(alreadyfound);
JUMPHERE(toolong);
return notfound;
}
static void do_revertframes(compiler_common *common)
{
DEFINE_COMPILER;
struct sljit_jump *jump;
struct sljit_label *mainloop;
sljit_emit_fast_enter(compiler, RETURN_ADDR, 0);
OP1(SLJIT_MOV, TMP3, 0, STACK_TOP, 0);
GET_LOCAL_BASE(TMP1, 0, 0);
/* Drop frames until we reach STACK_TOP. */
mainloop = LABEL();
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), -sizeof(sljit_sw));
jump = CMP(SLJIT_SIG_LESS_EQUAL, TMP2, 0, SLJIT_IMM, 0);
OP2(SLJIT_ADD, TMP2, 0, TMP2, 0, TMP1, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(TMP2), 0, SLJIT_MEM1(STACK_TOP), -2 * sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_MEM1(TMP2), sizeof(sljit_sw), SLJIT_MEM1(STACK_TOP), -3 * sizeof(sljit_sw));
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, 3 * sizeof(sljit_sw));
JUMPTO(SLJIT_JUMP, mainloop);
JUMPHERE(jump);
jump = CMP(SLJIT_NOT_ZERO /* SIG_LESS */, TMP2, 0, SLJIT_IMM, 0);
/* End of reverting values. */
OP1(SLJIT_MOV, STACK_TOP, 0, TMP3, 0);
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
JUMPHERE(jump);
OP1(SLJIT_NEG, TMP2, 0, TMP2, 0);
OP2(SLJIT_ADD, TMP2, 0, TMP2, 0, TMP1, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(TMP2), 0, SLJIT_MEM1(STACK_TOP), -2 * sizeof(sljit_sw));
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, 2 * sizeof(sljit_sw));
JUMPTO(SLJIT_JUMP, mainloop);
}
static void check_wordboundary(compiler_common *common)
{
DEFINE_COMPILER;
struct sljit_jump *skipread;
jump_list *skipread_list = NULL;
#if !(defined COMPILE_PCRE8) || defined SUPPORT_UTF
struct sljit_jump *jump;
#endif
SLJIT_COMPILE_ASSERT(ctype_word == 0x10, ctype_word_must_be_16);
sljit_emit_fast_enter(compiler, SLJIT_MEM1(SLJIT_SP), LOCALS0);
/* Get type of the previous char, and put it to LOCALS1. */
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, begin));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS1, SLJIT_IMM, 0);
skipread = CMP(SLJIT_LESS_EQUAL, STR_PTR, 0, TMP1, 0);
skip_char_back(common);
check_start_used_ptr(common);
read_char(common);
/* Testing char type. */
#ifdef SUPPORT_UCP
if (common->use_ucp)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, 1);
jump = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_UNDERSCORE);
add_jump(compiler, &common->getucd, JUMP(SLJIT_FAST_CALL));
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ucp_Ll);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, ucp_Lu - ucp_Ll);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS_EQUAL);
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ucp_Nd - ucp_Ll);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, ucp_No - ucp_Nd);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_LESS_EQUAL);
JUMPHERE(jump);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS1, TMP2, 0);
}
else
#endif
{
#ifndef COMPILE_PCRE8
jump = CMP(SLJIT_GREATER, TMP1, 0, SLJIT_IMM, 255);
#elif defined SUPPORT_UTF
/* Here LOCALS1 has already been zeroed. */
jump = NULL;
if (common->utf)
jump = CMP(SLJIT_GREATER, TMP1, 0, SLJIT_IMM, 255);
#endif /* COMPILE_PCRE8 */
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), common->ctypes);
OP2(SLJIT_LSHR, TMP1, 0, TMP1, 0, SLJIT_IMM, 4 /* ctype_word */);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS1, TMP1, 0);
#ifndef COMPILE_PCRE8
JUMPHERE(jump);
#elif defined SUPPORT_UTF
if (jump != NULL)
JUMPHERE(jump);
#endif /* COMPILE_PCRE8 */
}
JUMPHERE(skipread);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, 0);
check_str_end(common, &skipread_list);
peek_char(common, READ_CHAR_MAX);
/* Testing char type. This is a code duplication. */
#ifdef SUPPORT_UCP
if (common->use_ucp)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, 1);
jump = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_UNDERSCORE);
add_jump(compiler, &common->getucd, JUMP(SLJIT_FAST_CALL));
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ucp_Ll);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, ucp_Lu - ucp_Ll);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS_EQUAL);
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ucp_Nd - ucp_Ll);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, ucp_No - ucp_Nd);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_LESS_EQUAL);
JUMPHERE(jump);
}
else
#endif
{
#ifndef COMPILE_PCRE8
/* TMP2 may be destroyed by peek_char. */
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, 0);
jump = CMP(SLJIT_GREATER, TMP1, 0, SLJIT_IMM, 255);
#elif defined SUPPORT_UTF
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, 0);
jump = NULL;
if (common->utf)
jump = CMP(SLJIT_GREATER, TMP1, 0, SLJIT_IMM, 255);
#endif
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP1), common->ctypes);
OP2(SLJIT_LSHR, TMP2, 0, TMP2, 0, SLJIT_IMM, 4 /* ctype_word */);
OP2(SLJIT_AND, TMP2, 0, TMP2, 0, SLJIT_IMM, 1);
#ifndef COMPILE_PCRE8
JUMPHERE(jump);
#elif defined SUPPORT_UTF
if (jump != NULL)
JUMPHERE(jump);
#endif /* COMPILE_PCRE8 */
}
set_jumps(skipread_list, LABEL());
OP2(SLJIT_XOR | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP2, 0, SLJIT_MEM1(SLJIT_SP), LOCALS1);
sljit_emit_fast_return(compiler, SLJIT_MEM1(SLJIT_SP), LOCALS0);
}
static BOOL check_class_ranges(compiler_common *common, const sljit_u8 *bits, BOOL nclass, BOOL invert, jump_list **backtracks)
{
/* May destroy TMP1. */
DEFINE_COMPILER;
int ranges[MAX_RANGE_SIZE];
sljit_u8 bit, cbit, all;
int i, byte, length = 0;
bit = bits[0] & 0x1;
/* All bits will be zero or one (since bit is zero or one). */
all = -bit;
for (i = 0; i < 256; )
{
byte = i >> 3;
if ((i & 0x7) == 0 && bits[byte] == all)
i += 8;
else
{
cbit = (bits[byte] >> (i & 0x7)) & 0x1;
if (cbit != bit)
{
if (length >= MAX_RANGE_SIZE)
return FALSE;
ranges[length] = i;
length++;
bit = cbit;
all = -cbit;
}
i++;
}
}
if (((bit == 0) && nclass) || ((bit == 1) && !nclass))
{
if (length >= MAX_RANGE_SIZE)
return FALSE;
ranges[length] = 256;
length++;
}
if (length < 0 || length > 4)
return FALSE;
bit = bits[0] & 0x1;
if (invert) bit ^= 0x1;
/* No character is accepted. */
if (length == 0 && bit == 0)
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
switch(length)
{
case 0:
/* When bit != 0, all characters are accepted. */
return TRUE;
case 1:
add_jump(compiler, backtracks, CMP(bit == 0 ? SLJIT_LESS : SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, ranges[0]));
return TRUE;
case 2:
if (ranges[0] + 1 != ranges[1])
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[0]);
add_jump(compiler, backtracks, CMP(bit != 0 ? SLJIT_LESS : SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, ranges[1] - ranges[0]));
}
else
add_jump(compiler, backtracks, CMP(bit != 0 ? SLJIT_EQUAL : SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, ranges[0]));
return TRUE;
case 3:
if (bit != 0)
{
add_jump(compiler, backtracks, CMP(SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, ranges[2]));
if (ranges[0] + 1 != ranges[1])
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[0]);
add_jump(compiler, backtracks, CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, ranges[1] - ranges[0]));
}
else
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, ranges[0]));
return TRUE;
}
add_jump(compiler, backtracks, CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, ranges[0]));
if (ranges[1] + 1 != ranges[2])
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[1]);
add_jump(compiler, backtracks, CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, ranges[2] - ranges[1]));
}
else
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, ranges[1]));
return TRUE;
case 4:
if ((ranges[1] - ranges[0]) == (ranges[3] - ranges[2])
&& (ranges[0] | (ranges[2] - ranges[0])) == ranges[2]
&& (ranges[1] & (ranges[2] - ranges[0])) == 0
&& is_powerof2(ranges[2] - ranges[0]))
{
SLJIT_ASSERT((ranges[0] & (ranges[2] - ranges[0])) == 0 && (ranges[2] & ranges[3] & (ranges[2] - ranges[0])) != 0);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[2] - ranges[0]);
if (ranges[2] + 1 != ranges[3])
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[2]);
add_jump(compiler, backtracks, CMP(bit != 0 ? SLJIT_LESS : SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, ranges[3] - ranges[2]));
}
else
add_jump(compiler, backtracks, CMP(bit != 0 ? SLJIT_EQUAL : SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, ranges[2]));
return TRUE;
}
if (bit != 0)
{
i = 0;
if (ranges[0] + 1 != ranges[1])
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[0]);
add_jump(compiler, backtracks, CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, ranges[1] - ranges[0]));
i = ranges[0];
}
else
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, ranges[0]));
if (ranges[2] + 1 != ranges[3])
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[2] - i);
add_jump(compiler, backtracks, CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, ranges[3] - ranges[2]));
}
else
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, ranges[2] - i));
return TRUE;
}
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[0]);
add_jump(compiler, backtracks, CMP(SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, ranges[3] - ranges[0]));
if (ranges[1] + 1 != ranges[2])
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, ranges[1] - ranges[0]);
add_jump(compiler, backtracks, CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, ranges[2] - ranges[1]));
}
else
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, ranges[1] - ranges[0]));
return TRUE;
default:
SLJIT_UNREACHABLE();
return FALSE;
}
}
static void check_anynewline(compiler_common *common)
{
/* Check whether TMP1 contains a newline character. TMP2 destroyed. */
DEFINE_COMPILER;
sljit_emit_fast_enter(compiler, RETURN_ADDR, 0);
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x0a);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x0d - 0x0a);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x85 - 0x0a);
#if defined SUPPORT_UTF || defined COMPILE_PCRE16 || defined COMPILE_PCRE32
#ifdef COMPILE_PCRE8
if (common->utf)
{
#endif
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x1);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x2029 - 0x0a);
#ifdef COMPILE_PCRE8
}
#endif
#endif /* SUPPORT_UTF || COMPILE_PCRE16 || COMPILE_PCRE32 */
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_EQUAL);
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
}
static void check_hspace(compiler_common *common)
{
/* Check whether TMP1 contains a newline character. TMP2 destroyed. */
DEFINE_COMPILER;
sljit_emit_fast_enter(compiler, RETURN_ADDR, 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x09);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x20);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0xa0);
#if defined SUPPORT_UTF || defined COMPILE_PCRE16 || defined COMPILE_PCRE32
#ifdef COMPILE_PCRE8
if (common->utf)
{
#endif
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x1680);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x180e);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x2000);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x200A - 0x2000);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_LESS_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x202f - 0x2000);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x205f - 0x2000);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x3000 - 0x2000);
#ifdef COMPILE_PCRE8
}
#endif
#endif /* SUPPORT_UTF || COMPILE_PCRE16 || COMPILE_PCRE32 */
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_EQUAL);
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
}
static void check_vspace(compiler_common *common)
{
/* Check whether TMP1 contains a newline character. TMP2 destroyed. */
DEFINE_COMPILER;
sljit_emit_fast_enter(compiler, RETURN_ADDR, 0);
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x0a);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x0d - 0x0a);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x85 - 0x0a);
#if defined SUPPORT_UTF || defined COMPILE_PCRE16 || defined COMPILE_PCRE32
#ifdef COMPILE_PCRE8
if (common->utf)
{
#endif
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, 0x1);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x2029 - 0x0a);
#ifdef COMPILE_PCRE8
}
#endif
#endif /* SUPPORT_UTF || COMPILE_PCRE16 || COMPILE_PCRE32 */
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_EQUAL);
sljit_emit_fast_return(compiler, RETURN_ADDR, 0);
}
static void do_casefulcmp(compiler_common *common)
{
DEFINE_COMPILER;
struct sljit_jump *jump;
struct sljit_label *label;
int char1_reg;
int char2_reg;
if (sljit_get_register_index(TMP3) < 0)
{
char1_reg = STR_END;
char2_reg = STACK_TOP;
}
else
{
char1_reg = TMP3;
char2_reg = RETURN_ADDR;
}
sljit_emit_fast_enter(compiler, SLJIT_MEM1(SLJIT_SP), LOCALS0);
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
if (char1_reg == STR_END)
{
OP1(SLJIT_MOV, TMP3, 0, char1_reg, 0);
OP1(SLJIT_MOV, RETURN_ADDR, 0, char2_reg, 0);
}
if (sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_SUPP | SLJIT_MEM_POST, char1_reg, SLJIT_MEM1(TMP1), IN_UCHARS(1)) == SLJIT_SUCCESS)
{
label = LABEL();
sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_POST, char1_reg, SLJIT_MEM1(TMP1), IN_UCHARS(1));
sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_POST, char2_reg, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
jump = CMP(SLJIT_NOT_EQUAL, char1_reg, 0, char2_reg, 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP2, 0, TMP2, 0, SLJIT_IMM, IN_UCHARS(1));
JUMPTO(SLJIT_NOT_ZERO, label);
JUMPHERE(jump);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
}
else if (sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_SUPP | SLJIT_MEM_PRE, char1_reg, SLJIT_MEM1(TMP1), IN_UCHARS(1)) == SLJIT_SUCCESS)
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, IN_UCHARS(1));
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
label = LABEL();
sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_PRE, char1_reg, SLJIT_MEM1(TMP1), IN_UCHARS(1));
sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_PRE, char2_reg, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
jump = CMP(SLJIT_NOT_EQUAL, char1_reg, 0, char2_reg, 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP2, 0, TMP2, 0, SLJIT_IMM, IN_UCHARS(1));
JUMPTO(SLJIT_NOT_ZERO, label);
JUMPHERE(jump);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
}
else
{
label = LABEL();
OP1(MOV_UCHAR, char1_reg, 0, SLJIT_MEM1(TMP1), 0);
OP1(MOV_UCHAR, char2_reg, 0, SLJIT_MEM1(STR_PTR), 0);
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, IN_UCHARS(1));
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
jump = CMP(SLJIT_NOT_EQUAL, char1_reg, 0, char2_reg, 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP2, 0, TMP2, 0, SLJIT_IMM, IN_UCHARS(1));
JUMPTO(SLJIT_NOT_ZERO, label);
JUMPHERE(jump);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
}
if (char1_reg == STR_END)
{
OP1(SLJIT_MOV, char1_reg, 0, TMP3, 0);
OP1(SLJIT_MOV, char2_reg, 0, RETURN_ADDR, 0);
}
sljit_emit_fast_return(compiler, TMP1, 0);
}
static void do_caselesscmp(compiler_common *common)
{
DEFINE_COMPILER;
struct sljit_jump *jump;
struct sljit_label *label;
int char1_reg = STR_END;
int char2_reg;
int lcc_table;
int opt_type = 0;
if (sljit_get_register_index(TMP3) < 0)
{
char2_reg = STACK_TOP;
lcc_table = STACK_LIMIT;
}
else
{
char2_reg = RETURN_ADDR;
lcc_table = TMP3;
}
if (sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_SUPP | SLJIT_MEM_POST, char1_reg, SLJIT_MEM1(TMP1), IN_UCHARS(1)) == SLJIT_SUCCESS)
opt_type = 1;
else if (sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_SUPP | SLJIT_MEM_PRE, char1_reg, SLJIT_MEM1(TMP1), IN_UCHARS(1)) == SLJIT_SUCCESS)
opt_type = 2;
sljit_emit_fast_enter(compiler, SLJIT_MEM1(SLJIT_SP), LOCALS0);
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS1, char1_reg, 0);
if (char2_reg == STACK_TOP)
{
OP1(SLJIT_MOV, TMP3, 0, char2_reg, 0);
OP1(SLJIT_MOV, RETURN_ADDR, 0, lcc_table, 0);
}
OP1(SLJIT_MOV, lcc_table, 0, SLJIT_IMM, common->lcc);
if (opt_type == 1)
{
label = LABEL();
sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_POST, char1_reg, SLJIT_MEM1(TMP1), IN_UCHARS(1));
sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_POST, char2_reg, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
}
else if (opt_type == 2)
{
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, IN_UCHARS(1));
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
label = LABEL();
sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_PRE, char1_reg, SLJIT_MEM1(TMP1), IN_UCHARS(1));
sljit_emit_mem(compiler, MOV_UCHAR | SLJIT_MEM_PRE, char2_reg, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
}
else
{
label = LABEL();
OP1(MOV_UCHAR, char1_reg, 0, SLJIT_MEM1(TMP1), 0);
OP1(MOV_UCHAR, char2_reg, 0, SLJIT_MEM1(STR_PTR), 0);
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, IN_UCHARS(1));
}
#ifndef COMPILE_PCRE8
jump = CMP(SLJIT_GREATER, char1_reg, 0, SLJIT_IMM, 255);
#endif
OP1(SLJIT_MOV_U8, char1_reg, 0, SLJIT_MEM2(lcc_table, char1_reg), 0);
#ifndef COMPILE_PCRE8
JUMPHERE(jump);
jump = CMP(SLJIT_GREATER, char2_reg, 0, SLJIT_IMM, 255);
#endif
OP1(SLJIT_MOV_U8, char2_reg, 0, SLJIT_MEM2(lcc_table, char2_reg), 0);
#ifndef COMPILE_PCRE8
JUMPHERE(jump);
#endif
if (opt_type == 0)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
jump = CMP(SLJIT_NOT_EQUAL, char1_reg, 0, char2_reg, 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP2, 0, TMP2, 0, SLJIT_IMM, IN_UCHARS(1));
JUMPTO(SLJIT_NOT_ZERO, label);
JUMPHERE(jump);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
if (opt_type == 2)
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
if (char2_reg == STACK_TOP)
{
OP1(SLJIT_MOV, char2_reg, 0, TMP3, 0);
OP1(SLJIT_MOV, lcc_table, 0, RETURN_ADDR, 0);
}
OP1(SLJIT_MOV, char1_reg, 0, SLJIT_MEM1(SLJIT_SP), LOCALS1);
sljit_emit_fast_return(compiler, TMP1, 0);
}
#if defined SUPPORT_UTF && defined SUPPORT_UCP
static const pcre_uchar * SLJIT_FUNC do_utf_caselesscmp(pcre_uchar *src1, pcre_uchar *src2, pcre_uchar *end1, pcre_uchar *end2)
{
/* This function would be ineffective to do in JIT level. */
sljit_u32 c1, c2;
const ucd_record *ur;
const sljit_u32 *pp;
while (src1 < end1)
{
if (src2 >= end2)
return (pcre_uchar*)1;
GETCHARINC(c1, src1);
GETCHARINC(c2, src2);
ur = GET_UCD(c2);
if (c1 != c2 && c1 != c2 + ur->other_case)
{
pp = PRIV(ucd_caseless_sets) + ur->caseset;
for (;;)
{
if (c1 < *pp) return NULL;
if (c1 == *pp++) break;
}
}
}
return src2;
}
#endif /* SUPPORT_UTF && SUPPORT_UCP */
static pcre_uchar *byte_sequence_compare(compiler_common *common, BOOL caseless, pcre_uchar *cc,
compare_context *context, jump_list **backtracks)
{
DEFINE_COMPILER;
unsigned int othercasebit = 0;
pcre_uchar *othercasechar = NULL;
#ifdef SUPPORT_UTF
int utflength;
#endif
if (caseless && char_has_othercase(common, cc))
{
othercasebit = char_get_othercase_bit(common, cc);
SLJIT_ASSERT(othercasebit);
/* Extracting bit difference info. */
#if defined COMPILE_PCRE8
othercasechar = cc + (othercasebit >> 8);
othercasebit &= 0xff;
#elif defined COMPILE_PCRE16 || defined COMPILE_PCRE32
/* Note that this code only handles characters in the BMP. If there
ever are characters outside the BMP whose othercase differs in only one
bit from itself (there currently are none), this code will need to be
revised for COMPILE_PCRE32. */
othercasechar = cc + (othercasebit >> 9);
if ((othercasebit & 0x100) != 0)
othercasebit = (othercasebit & 0xff) << 8;
else
othercasebit &= 0xff;
#endif /* COMPILE_PCRE[8|16|32] */
}
if (context->sourcereg == -1)
{
#if defined COMPILE_PCRE8
#if defined SLJIT_UNALIGNED && SLJIT_UNALIGNED
if (context->length >= 4)
OP1(SLJIT_MOV_S32, TMP1, 0, SLJIT_MEM1(STR_PTR), -context->length);
else if (context->length >= 2)
OP1(SLJIT_MOV_U16, TMP1, 0, SLJIT_MEM1(STR_PTR), -context->length);
else
#endif
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(STR_PTR), -context->length);
#elif defined COMPILE_PCRE16
#if defined SLJIT_UNALIGNED && SLJIT_UNALIGNED
if (context->length >= 4)
OP1(SLJIT_MOV_S32, TMP1, 0, SLJIT_MEM1(STR_PTR), -context->length);
else
#endif
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), -context->length);
#elif defined COMPILE_PCRE32
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), -context->length);
#endif /* COMPILE_PCRE[8|16|32] */
context->sourcereg = TMP2;
}
#ifdef SUPPORT_UTF
utflength = 1;
if (common->utf && HAS_EXTRALEN(*cc))
utflength += GET_EXTRALEN(*cc);
do
{
#endif
context->length -= IN_UCHARS(1);
#if (defined SLJIT_UNALIGNED && SLJIT_UNALIGNED) && (defined COMPILE_PCRE8 || defined COMPILE_PCRE16)
/* Unaligned read is supported. */
if (othercasebit != 0 && othercasechar == cc)
{
context->c.asuchars[context->ucharptr] = *cc | othercasebit;
context->oc.asuchars[context->ucharptr] = othercasebit;
}
else
{
context->c.asuchars[context->ucharptr] = *cc;
context->oc.asuchars[context->ucharptr] = 0;
}
context->ucharptr++;
#if defined COMPILE_PCRE8
if (context->ucharptr >= 4 || context->length == 0 || (context->ucharptr == 2 && context->length == 1))
#else
if (context->ucharptr >= 2 || context->length == 0)
#endif
{
if (context->length >= 4)
OP1(SLJIT_MOV_S32, context->sourcereg, 0, SLJIT_MEM1(STR_PTR), -context->length);
else if (context->length >= 2)
OP1(SLJIT_MOV_U16, context->sourcereg, 0, SLJIT_MEM1(STR_PTR), -context->length);
#if defined COMPILE_PCRE8
else if (context->length >= 1)
OP1(SLJIT_MOV_U8, context->sourcereg, 0, SLJIT_MEM1(STR_PTR), -context->length);
#endif /* COMPILE_PCRE8 */
context->sourcereg = context->sourcereg == TMP1 ? TMP2 : TMP1;
switch(context->ucharptr)
{
case 4 / sizeof(pcre_uchar):
if (context->oc.asint != 0)
OP2(SLJIT_OR, context->sourcereg, 0, context->sourcereg, 0, SLJIT_IMM, context->oc.asint);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, context->sourcereg, 0, SLJIT_IMM, context->c.asint | context->oc.asint));
break;
case 2 / sizeof(pcre_uchar):
if (context->oc.asushort != 0)
OP2(SLJIT_OR, context->sourcereg, 0, context->sourcereg, 0, SLJIT_IMM, context->oc.asushort);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, context->sourcereg, 0, SLJIT_IMM, context->c.asushort | context->oc.asushort));
break;
#ifdef COMPILE_PCRE8
case 1:
if (context->oc.asbyte != 0)
OP2(SLJIT_OR, context->sourcereg, 0, context->sourcereg, 0, SLJIT_IMM, context->oc.asbyte);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, context->sourcereg, 0, SLJIT_IMM, context->c.asbyte | context->oc.asbyte));
break;
#endif
default:
SLJIT_UNREACHABLE();
break;
}
context->ucharptr = 0;
}
#else
/* Unaligned read is unsupported or in 32 bit mode. */
if (context->length >= 1)
OP1(MOV_UCHAR, context->sourcereg, 0, SLJIT_MEM1(STR_PTR), -context->length);
context->sourcereg = context->sourcereg == TMP1 ? TMP2 : TMP1;
if (othercasebit != 0 && othercasechar == cc)
{
OP2(SLJIT_OR, context->sourcereg, 0, context->sourcereg, 0, SLJIT_IMM, othercasebit);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, context->sourcereg, 0, SLJIT_IMM, *cc | othercasebit));
}
else
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, context->sourcereg, 0, SLJIT_IMM, *cc));
#endif
cc++;
#ifdef SUPPORT_UTF
utflength--;
}
while (utflength > 0);
#endif
return cc;
}
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
#define SET_TYPE_OFFSET(value) \
if ((value) != typeoffset) \
{ \
if ((value) < typeoffset) \
OP2(SLJIT_ADD, typereg, 0, typereg, 0, SLJIT_IMM, typeoffset - (value)); \
else \
OP2(SLJIT_SUB, typereg, 0, typereg, 0, SLJIT_IMM, (value) - typeoffset); \
} \
typeoffset = (value);
#define SET_CHAR_OFFSET(value) \
if ((value) != charoffset) \
{ \
if ((value) < charoffset) \
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(charoffset - (value))); \
else \
OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)((value) - charoffset)); \
} \
charoffset = (value);
static pcre_uchar *compile_char1_matchingpath(compiler_common *common, pcre_uchar type, pcre_uchar *cc, jump_list **backtracks, BOOL check_str_ptr);
static void compile_xclass_matchingpath(compiler_common *common, pcre_uchar *cc, jump_list **backtracks)
{
DEFINE_COMPILER;
jump_list *found = NULL;
jump_list **list = (cc[0] & XCL_NOT) == 0 ? &found : backtracks;
sljit_uw c, charoffset, max = 256, min = READ_CHAR_MAX;
struct sljit_jump *jump = NULL;
pcre_uchar *ccbegin;
int compares, invertcmp, numberofcmps;
#if defined SUPPORT_UTF && (defined COMPILE_PCRE8 || defined COMPILE_PCRE16)
BOOL utf = common->utf;
#endif
#ifdef SUPPORT_UCP
BOOL needstype = FALSE, needsscript = FALSE, needschar = FALSE;
BOOL charsaved = FALSE;
int typereg = TMP1;
const sljit_u32 *other_cases;
sljit_uw typeoffset;
#endif
/* Scanning the necessary info. */
cc++;
ccbegin = cc;
compares = 0;
if (cc[-1] & XCL_MAP)
{
min = 0;
cc += 32 / sizeof(pcre_uchar);
}
while (*cc != XCL_END)
{
compares++;
if (*cc == XCL_SINGLE)
{
cc ++;
GETCHARINCTEST(c, cc);
if (c > max) max = c;
if (c < min) min = c;
#ifdef SUPPORT_UCP
needschar = TRUE;
#endif
}
else if (*cc == XCL_RANGE)
{
cc ++;
GETCHARINCTEST(c, cc);
if (c < min) min = c;
GETCHARINCTEST(c, cc);
if (c > max) max = c;
#ifdef SUPPORT_UCP
needschar = TRUE;
#endif
}
#ifdef SUPPORT_UCP
else
{
SLJIT_ASSERT(*cc == XCL_PROP || *cc == XCL_NOTPROP);
cc++;
if (*cc == PT_CLIST)
{
other_cases = PRIV(ucd_caseless_sets) + cc[1];
while (*other_cases != NOTACHAR)
{
if (*other_cases > max) max = *other_cases;
if (*other_cases < min) min = *other_cases;
other_cases++;
}
}
else
{
max = READ_CHAR_MAX;
min = 0;
}
switch(*cc)
{
case PT_ANY:
/* Any either accepts everything or ignored. */
if (cc[-1] == XCL_PROP)
{
compile_char1_matchingpath(common, OP_ALLANY, cc, backtracks, FALSE);
if (list == backtracks)
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
return;
}
break;
case PT_LAMP:
case PT_GC:
case PT_PC:
case PT_ALNUM:
needstype = TRUE;
break;
case PT_SC:
needsscript = TRUE;
break;
case PT_SPACE:
case PT_PXSPACE:
case PT_WORD:
case PT_PXGRAPH:
case PT_PXPRINT:
case PT_PXPUNCT:
needstype = TRUE;
needschar = TRUE;
break;
case PT_CLIST:
case PT_UCNC:
needschar = TRUE;
break;
default:
SLJIT_UNREACHABLE();
break;
}
cc += 2;
}
#endif
}
SLJIT_ASSERT(compares > 0);
/* We are not necessary in utf mode even in 8 bit mode. */
cc = ccbegin;
read_char_range(common, min, max, (cc[-1] & XCL_NOT) != 0);
if ((cc[-1] & XCL_HASPROP) == 0)
{
if ((cc[-1] & XCL_MAP) != 0)
{
jump = CMP(SLJIT_GREATER, TMP1, 0, SLJIT_IMM, 255);
if (!check_class_ranges(common, (const sljit_u8 *)cc, (((const sljit_u8 *)cc)[31] & 0x80) != 0, TRUE, &found))
{
OP2(SLJIT_AND, TMP2, 0, TMP1, 0, SLJIT_IMM, 0x7);
OP2(SLJIT_LSHR, TMP1, 0, TMP1, 0, SLJIT_IMM, 3);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)cc);
OP2(SLJIT_SHL, TMP2, 0, SLJIT_IMM, 1, TMP2, 0);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, TMP2, 0);
add_jump(compiler, &found, JUMP(SLJIT_NOT_ZERO));
}
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
JUMPHERE(jump);
cc += 32 / sizeof(pcre_uchar);
}
else
{
OP2(SLJIT_SUB, TMP2, 0, TMP1, 0, SLJIT_IMM, min);
add_jump(compiler, (cc[-1] & XCL_NOT) == 0 ? backtracks : &found, CMP(SLJIT_GREATER, TMP2, 0, SLJIT_IMM, max - min));
}
}
else if ((cc[-1] & XCL_MAP) != 0)
{
OP1(SLJIT_MOV, RETURN_ADDR, 0, TMP1, 0);
#ifdef SUPPORT_UCP
charsaved = TRUE;
#endif
if (!check_class_ranges(common, (const sljit_u8 *)cc, FALSE, TRUE, list))
{
#ifdef COMPILE_PCRE8
jump = NULL;
if (common->utf)
#endif
jump = CMP(SLJIT_GREATER, TMP1, 0, SLJIT_IMM, 255);
OP2(SLJIT_AND, TMP2, 0, TMP1, 0, SLJIT_IMM, 0x7);
OP2(SLJIT_LSHR, TMP1, 0, TMP1, 0, SLJIT_IMM, 3);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)cc);
OP2(SLJIT_SHL, TMP2, 0, SLJIT_IMM, 1, TMP2, 0);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, TMP2, 0);
add_jump(compiler, list, JUMP(SLJIT_NOT_ZERO));
#ifdef COMPILE_PCRE8
if (common->utf)
#endif
JUMPHERE(jump);
}
OP1(SLJIT_MOV, TMP1, 0, RETURN_ADDR, 0);
cc += 32 / sizeof(pcre_uchar);
}
#ifdef SUPPORT_UCP
if (needstype || needsscript)
{
if (needschar && !charsaved)
OP1(SLJIT_MOV, RETURN_ADDR, 0, TMP1, 0);
#ifdef COMPILE_PCRE32
if (!common->utf)
{
jump = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0x10ffff + 1);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, INVALID_UTF_CHAR);
JUMPHERE(jump);
}
#endif
OP2(SLJIT_LSHR, TMP2, 0, TMP1, 0, SLJIT_IMM, UCD_BLOCK_SHIFT);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP2), (sljit_sw)PRIV(ucd_stage1));
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, UCD_BLOCK_MASK);
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, UCD_BLOCK_SHIFT);
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, TMP2, 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, (sljit_sw)PRIV(ucd_stage2));
OP1(SLJIT_MOV_U16, TMP2, 0, SLJIT_MEM2(TMP2, TMP1), 1);
/* Before anything else, we deal with scripts. */
if (needsscript)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, (sljit_sw)PRIV(ucd_records) + SLJIT_OFFSETOF(ucd_record, script));
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM2(TMP1, TMP2), 3);
ccbegin = cc;
while (*cc != XCL_END)
{
if (*cc == XCL_SINGLE)
{
cc ++;
GETCHARINCTEST(c, cc);
}
else if (*cc == XCL_RANGE)
{
cc ++;
GETCHARINCTEST(c, cc);
GETCHARINCTEST(c, cc);
}
else
{
SLJIT_ASSERT(*cc == XCL_PROP || *cc == XCL_NOTPROP);
cc++;
if (*cc == PT_SC)
{
compares--;
invertcmp = (compares == 0 && list != backtracks);
if (cc[-1] == XCL_NOTPROP)
invertcmp ^= 0x1;
jump = CMP(SLJIT_EQUAL ^ invertcmp, TMP1, 0, SLJIT_IMM, (int)cc[1]);
add_jump(compiler, compares > 0 ? list : backtracks, jump);
}
cc += 2;
}
}
cc = ccbegin;
}
if (needschar)
{
OP1(SLJIT_MOV, TMP1, 0, RETURN_ADDR, 0);
}
if (needstype)
{
if (!needschar)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, (sljit_sw)PRIV(ucd_records) + SLJIT_OFFSETOF(ucd_record, chartype));
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM2(TMP1, TMP2), 3);
}
else
{
OP2(SLJIT_SHL, TMP2, 0, TMP2, 0, SLJIT_IMM, 3);
OP1(SLJIT_MOV_U8, RETURN_ADDR, 0, SLJIT_MEM1(TMP2), (sljit_sw)PRIV(ucd_records) + SLJIT_OFFSETOF(ucd_record, chartype));
typereg = RETURN_ADDR;
}
}
}
#endif
/* Generating code. */
charoffset = 0;
numberofcmps = 0;
#ifdef SUPPORT_UCP
typeoffset = 0;
#endif
while (*cc != XCL_END)
{
compares--;
invertcmp = (compares == 0 && list != backtracks);
jump = NULL;
if (*cc == XCL_SINGLE)
{
cc ++;
GETCHARINCTEST(c, cc);
if (numberofcmps < 3 && (*cc == XCL_SINGLE || *cc == XCL_RANGE))
{
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(c - charoffset));
OP_FLAGS(numberofcmps == 0 ? SLJIT_MOV : SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
numberofcmps++;
}
else if (numberofcmps > 0)
{
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(c - charoffset));
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_EQUAL);
jump = JUMP(SLJIT_NOT_ZERO ^ invertcmp);
numberofcmps = 0;
}
else
{
jump = CMP(SLJIT_EQUAL ^ invertcmp, TMP1, 0, SLJIT_IMM, (sljit_sw)(c - charoffset));
numberofcmps = 0;
}
}
else if (*cc == XCL_RANGE)
{
cc ++;
GETCHARINCTEST(c, cc);
SET_CHAR_OFFSET(c);
GETCHARINCTEST(c, cc);
if (numberofcmps < 3 && (*cc == XCL_SINGLE || *cc == XCL_RANGE))
{
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(c - charoffset));
OP_FLAGS(numberofcmps == 0 ? SLJIT_MOV : SLJIT_OR, TMP2, 0, SLJIT_LESS_EQUAL);
numberofcmps++;
}
else if (numberofcmps > 0)
{
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(c - charoffset));
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_LESS_EQUAL);
jump = JUMP(SLJIT_NOT_ZERO ^ invertcmp);
numberofcmps = 0;
}
else
{
jump = CMP(SLJIT_LESS_EQUAL ^ invertcmp, TMP1, 0, SLJIT_IMM, (sljit_sw)(c - charoffset));
numberofcmps = 0;
}
}
#ifdef SUPPORT_UCP
else
{
SLJIT_ASSERT(*cc == XCL_PROP || *cc == XCL_NOTPROP);
if (*cc == XCL_NOTPROP)
invertcmp ^= 0x1;
cc++;
switch(*cc)
{
case PT_ANY:
if (!invertcmp)
jump = JUMP(SLJIT_JUMP);
break;
case PT_LAMP:
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_Lu - typeoffset);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_Ll - typeoffset);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_Lt - typeoffset);
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_EQUAL);
jump = JUMP(SLJIT_NOT_ZERO ^ invertcmp);
break;
case PT_GC:
c = PRIV(ucp_typerange)[(int)cc[1] * 2];
SET_TYPE_OFFSET(c);
jump = CMP(SLJIT_LESS_EQUAL ^ invertcmp, typereg, 0, SLJIT_IMM, PRIV(ucp_typerange)[(int)cc[1] * 2 + 1] - c);
break;
case PT_PC:
jump = CMP(SLJIT_EQUAL ^ invertcmp, typereg, 0, SLJIT_IMM, (int)cc[1] - typeoffset);
break;
case PT_SC:
compares++;
/* Do nothing. */
break;
case PT_SPACE:
case PT_PXSPACE:
SET_CHAR_OFFSET(9);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0xd - 0x9);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x85 - 0x9);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x180e - 0x9);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
SET_TYPE_OFFSET(ucp_Zl);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_Zs - ucp_Zl);
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_LESS_EQUAL);
jump = JUMP(SLJIT_NOT_ZERO ^ invertcmp);
break;
case PT_WORD:
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(CHAR_UNDERSCORE - charoffset));
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_EQUAL);
/* Fall through. */
case PT_ALNUM:
SET_TYPE_OFFSET(ucp_Ll);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_Lu - ucp_Ll);
OP_FLAGS((*cc == PT_ALNUM) ? SLJIT_MOV : SLJIT_OR, TMP2, 0, SLJIT_LESS_EQUAL);
SET_TYPE_OFFSET(ucp_Nd);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_No - ucp_Nd);
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_LESS_EQUAL);
jump = JUMP(SLJIT_NOT_ZERO ^ invertcmp);
break;
case PT_CLIST:
other_cases = PRIV(ucd_caseless_sets) + cc[1];
/* At least three characters are required.
Otherwise this case would be handled by the normal code path. */
SLJIT_ASSERT(other_cases[0] != NOTACHAR && other_cases[1] != NOTACHAR && other_cases[2] != NOTACHAR);
SLJIT_ASSERT(other_cases[0] < other_cases[1] && other_cases[1] < other_cases[2]);
/* Optimizing character pairs, if their difference is power of 2. */
if (is_powerof2(other_cases[1] ^ other_cases[0]))
{
if (charoffset == 0)
OP2(SLJIT_OR, TMP2, 0, TMP1, 0, SLJIT_IMM, other_cases[1] ^ other_cases[0]);
else
{
OP2(SLJIT_ADD, TMP2, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)charoffset);
OP2(SLJIT_OR, TMP2, 0, TMP2, 0, SLJIT_IMM, other_cases[1] ^ other_cases[0]);
}
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP2, 0, SLJIT_IMM, other_cases[1]);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_EQUAL);
other_cases += 2;
}
else if (is_powerof2(other_cases[2] ^ other_cases[1]))
{
if (charoffset == 0)
OP2(SLJIT_OR, TMP2, 0, TMP1, 0, SLJIT_IMM, other_cases[2] ^ other_cases[1]);
else
{
OP2(SLJIT_ADD, TMP2, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)charoffset);
OP2(SLJIT_OR, TMP2, 0, TMP2, 0, SLJIT_IMM, other_cases[1] ^ other_cases[0]);
}
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP2, 0, SLJIT_IMM, other_cases[2]);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(other_cases[0] - charoffset));
OP_FLAGS(SLJIT_OR | ((other_cases[3] == NOTACHAR) ? SLJIT_SET_Z : 0), TMP2, 0, SLJIT_EQUAL);
other_cases += 3;
}
else
{
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(*other_cases++ - charoffset));
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_EQUAL);
}
while (*other_cases != NOTACHAR)
{
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(*other_cases++ - charoffset));
OP_FLAGS(SLJIT_OR | ((*other_cases == NOTACHAR) ? SLJIT_SET_Z : 0), TMP2, 0, SLJIT_EQUAL);
}
jump = JUMP(SLJIT_NOT_ZERO ^ invertcmp);
break;
case PT_UCNC:
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(CHAR_DOLLAR_SIGN - charoffset));
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(CHAR_COMMERCIAL_AT - charoffset));
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(CHAR_GRAVE_ACCENT - charoffset));
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
SET_CHAR_OFFSET(0xa0);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (sljit_sw)(0xd7ff - charoffset));
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_LESS_EQUAL);
SET_CHAR_OFFSET(0);
OP2(SLJIT_SUB | SLJIT_SET_GREATER_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0xe000 - 0);
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_GREATER_EQUAL);
jump = JUMP(SLJIT_NOT_ZERO ^ invertcmp);
break;
case PT_PXGRAPH:
/* C and Z groups are the farthest two groups. */
SET_TYPE_OFFSET(ucp_Ll);
OP2(SLJIT_SUB | SLJIT_SET_GREATER, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_So - ucp_Ll);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_GREATER);
jump = CMP(SLJIT_NOT_EQUAL, typereg, 0, SLJIT_IMM, ucp_Cf - ucp_Ll);
/* In case of ucp_Cf, we overwrite the result. */
SET_CHAR_OFFSET(0x2066);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x2069 - 0x2066);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x061c - 0x2066);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x180e - 0x2066);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
JUMPHERE(jump);
jump = CMP(SLJIT_ZERO ^ invertcmp, TMP2, 0, SLJIT_IMM, 0);
break;
case PT_PXPRINT:
/* C and Z groups are the farthest two groups. */
SET_TYPE_OFFSET(ucp_Ll);
OP2(SLJIT_SUB | SLJIT_SET_GREATER, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_So - ucp_Ll);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_GREATER);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_Zs - ucp_Ll);
OP_FLAGS(SLJIT_AND, TMP2, 0, SLJIT_NOT_EQUAL);
jump = CMP(SLJIT_NOT_EQUAL, typereg, 0, SLJIT_IMM, ucp_Cf - ucp_Ll);
/* In case of ucp_Cf, we overwrite the result. */
SET_CHAR_OFFSET(0x2066);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x2069 - 0x2066);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS_EQUAL);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x061c - 0x2066);
OP_FLAGS(SLJIT_OR, TMP2, 0, SLJIT_EQUAL);
JUMPHERE(jump);
jump = CMP(SLJIT_ZERO ^ invertcmp, TMP2, 0, SLJIT_IMM, 0);
break;
case PT_PXPUNCT:
SET_TYPE_OFFSET(ucp_Sc);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_So - ucp_Sc);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS_EQUAL);
SET_CHAR_OFFSET(0);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0x7f);
OP_FLAGS(SLJIT_AND, TMP2, 0, SLJIT_LESS_EQUAL);
SET_TYPE_OFFSET(ucp_Pc);
OP2(SLJIT_SUB | SLJIT_SET_LESS_EQUAL, SLJIT_UNUSED, 0, typereg, 0, SLJIT_IMM, ucp_Ps - ucp_Pc);
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_LESS_EQUAL);
jump = JUMP(SLJIT_NOT_ZERO ^ invertcmp);
break;
default:
SLJIT_UNREACHABLE();
break;
}
cc += 2;
}
#endif
if (jump != NULL)
add_jump(compiler, compares > 0 ? list : backtracks, jump);
}
if (found != NULL)
set_jumps(found, LABEL());
}
#undef SET_TYPE_OFFSET
#undef SET_CHAR_OFFSET
#endif
static pcre_uchar *compile_simple_assertion_matchingpath(compiler_common *common, pcre_uchar type, pcre_uchar *cc, jump_list **backtracks)
{
DEFINE_COMPILER;
int length;
struct sljit_jump *jump[4];
#ifdef SUPPORT_UTF
struct sljit_label *label;
#endif /* SUPPORT_UTF */
switch(type)
{
case OP_SOD:
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, begin));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, STR_PTR, 0, TMP1, 0));
return cc;
case OP_SOM:
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, str));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, STR_PTR, 0, TMP1, 0));
return cc;
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
add_jump(compiler, &common->wordboundary, JUMP(SLJIT_FAST_CALL));
sljit_set_current_flags(compiler, SLJIT_SET_Z);
add_jump(compiler, backtracks, JUMP(type == OP_NOT_WORD_BOUNDARY ? SLJIT_NOT_ZERO : SLJIT_ZERO));
return cc;
case OP_EODN:
/* Requires rather complex checks. */
jump[0] = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
if (common->nltype == NLTYPE_FIXED && common->newline > 255)
{
OP2(SLJIT_ADD, TMP2, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(2));
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
if (common->mode == JIT_COMPILE)
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, STR_END, 0));
else
{
jump[1] = CMP(SLJIT_EQUAL, TMP2, 0, STR_END, 0);
OP2(SLJIT_SUB | SLJIT_SET_LESS, SLJIT_UNUSED, 0, TMP2, 0, STR_END, 0);
OP_FLAGS(SLJIT_MOV, TMP2, 0, SLJIT_LESS);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff);
OP_FLAGS(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, SLJIT_NOT_EQUAL);
add_jump(compiler, backtracks, JUMP(SLJIT_NOT_EQUAL));
check_partial(common, TRUE);
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
JUMPHERE(jump[1]);
}
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, common->newline & 0xff));
}
else if (common->nltype == NLTYPE_FIXED)
{
OP2(SLJIT_ADD, TMP2, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, STR_END, 0));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, common->newline));
}
else
{
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
jump[1] = CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_CR);
OP2(SLJIT_ADD, TMP2, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(2));
OP2(SLJIT_SUB | SLJIT_SET_Z | SLJIT_SET_GREATER, SLJIT_UNUSED, 0, TMP2, 0, STR_END, 0);
jump[2] = JUMP(SLJIT_GREATER);
add_jump(compiler, backtracks, JUMP(SLJIT_NOT_EQUAL) /* LESS */);
/* Equal. */
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
jump[3] = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_NL);
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
JUMPHERE(jump[1]);
if (common->nltype == NLTYPE_ANYCRLF)
{
OP2(SLJIT_ADD, TMP2, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
add_jump(compiler, backtracks, CMP(SLJIT_LESS, TMP2, 0, STR_END, 0));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_NL));
}
else
{
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS1, STR_PTR, 0);
read_char_range(common, common->nlmin, common->nlmax, TRUE);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, STR_PTR, 0, STR_END, 0));
add_jump(compiler, &common->anynewline, JUMP(SLJIT_FAST_CALL));
sljit_set_current_flags(compiler, SLJIT_SET_Z);
add_jump(compiler, backtracks, JUMP(SLJIT_ZERO));
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), LOCALS1);
}
JUMPHERE(jump[2]);
JUMPHERE(jump[3]);
}
JUMPHERE(jump[0]);
check_partial(common, FALSE);
return cc;
case OP_EOD:
add_jump(compiler, backtracks, CMP(SLJIT_LESS, STR_PTR, 0, STR_END, 0));
check_partial(common, FALSE);
return cc;
case OP_DOLL:
OP1(SLJIT_MOV, TMP2, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(jit_arguments, noteol));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, 0));
if (!common->endonly)
compile_simple_assertion_matchingpath(common, OP_EODN, cc, backtracks);
else
{
add_jump(compiler, backtracks, CMP(SLJIT_LESS, STR_PTR, 0, STR_END, 0));
check_partial(common, FALSE);
}
return cc;
case OP_DOLLM:
jump[1] = CMP(SLJIT_LESS, STR_PTR, 0, STR_END, 0);
OP1(SLJIT_MOV, TMP2, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(jit_arguments, noteol));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, 0));
check_partial(common, FALSE);
jump[0] = JUMP(SLJIT_JUMP);
JUMPHERE(jump[1]);
if (common->nltype == NLTYPE_FIXED && common->newline > 255)
{
OP2(SLJIT_ADD, TMP2, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(2));
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
if (common->mode == JIT_COMPILE)
add_jump(compiler, backtracks, CMP(SLJIT_GREATER, TMP2, 0, STR_END, 0));
else
{
jump[1] = CMP(SLJIT_LESS_EQUAL, TMP2, 0, STR_END, 0);
/* STR_PTR = STR_END - IN_UCHARS(1) */
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff));
check_partial(common, TRUE);
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
JUMPHERE(jump[1]);
}
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(1));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, common->newline & 0xff));
}
else
{
peek_char(common, common->nlmax);
check_newlinechar(common, common->nltype, backtracks, FALSE);
}
JUMPHERE(jump[0]);
return cc;
case OP_CIRC:
OP1(SLJIT_MOV, TMP2, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(jit_arguments, begin));
add_jump(compiler, backtracks, CMP(SLJIT_GREATER, STR_PTR, 0, TMP1, 0));
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(jit_arguments, notbol));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, 0));
return cc;
case OP_CIRCM:
OP1(SLJIT_MOV, TMP2, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(jit_arguments, begin));
jump[1] = CMP(SLJIT_GREATER, STR_PTR, 0, TMP1, 0);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(jit_arguments, notbol));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, 0));
jump[0] = JUMP(SLJIT_JUMP);
JUMPHERE(jump[1]);
add_jump(compiler, backtracks, CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0));
if (common->nltype == NLTYPE_FIXED && common->newline > 255)
{
OP2(SLJIT_SUB, TMP2, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(2));
add_jump(compiler, backtracks, CMP(SLJIT_LESS, TMP2, 0, TMP1, 0));
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-2));
OP1(MOV_UCHAR, TMP2, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-1));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, common->newline & 0xff));
}
else
{
skip_char_back(common);
read_char_range(common, common->nlmin, common->nlmax, TRUE);
check_newlinechar(common, common->nltype, backtracks, FALSE);
}
JUMPHERE(jump[0]);
return cc;
case OP_REVERSE:
length = GET(cc, 0);
if (length == 0)
return cc + LINK_SIZE;
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
#ifdef SUPPORT_UTF
if (common->utf)
{
OP1(SLJIT_MOV, TMP3, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, begin));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, length);
label = LABEL();
add_jump(compiler, backtracks, CMP(SLJIT_LESS_EQUAL, STR_PTR, 0, TMP3, 0));
skip_char_back(common);
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP2, 0, TMP2, 0, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
}
else
#endif
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, begin));
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(length));
add_jump(compiler, backtracks, CMP(SLJIT_LESS, STR_PTR, 0, TMP1, 0));
}
check_start_used_ptr(common);
return cc + LINK_SIZE;
}
SLJIT_UNREACHABLE();
return cc;
}
static pcre_uchar *compile_char1_matchingpath(compiler_common *common, pcre_uchar type, pcre_uchar *cc, jump_list **backtracks, BOOL check_str_ptr)
{
DEFINE_COMPILER;
int length;
unsigned int c, oc, bit;
compare_context context;
struct sljit_jump *jump[3];
jump_list *end_list;
#ifdef SUPPORT_UTF
struct sljit_label *label;
#ifdef SUPPORT_UCP
pcre_uchar propdata[5];
#endif
#endif /* SUPPORT_UTF */
switch(type)
{
case OP_NOT_DIGIT:
case OP_DIGIT:
/* Digits are usually 0-9, so it is worth to optimize them. */
if (check_str_ptr)
detect_partial_match(common, backtracks);
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf && is_char7_bitset((const sljit_u8 *)common->ctypes - cbit_length + cbit_digit, FALSE))
read_char7_type(common, type == OP_NOT_DIGIT);
else
#endif
read_char8_type(common, type == OP_NOT_DIGIT);
/* Flip the starting bit in the negative case. */
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, ctype_digit);
add_jump(compiler, backtracks, JUMP(type == OP_DIGIT ? SLJIT_ZERO : SLJIT_NOT_ZERO));
return cc;
case OP_NOT_WHITESPACE:
case OP_WHITESPACE:
if (check_str_ptr)
detect_partial_match(common, backtracks);
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf && is_char7_bitset((const sljit_u8 *)common->ctypes - cbit_length + cbit_space, FALSE))
read_char7_type(common, type == OP_NOT_WHITESPACE);
else
#endif
read_char8_type(common, type == OP_NOT_WHITESPACE);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, ctype_space);
add_jump(compiler, backtracks, JUMP(type == OP_WHITESPACE ? SLJIT_ZERO : SLJIT_NOT_ZERO));
return cc;
case OP_NOT_WORDCHAR:
case OP_WORDCHAR:
if (check_str_ptr)
detect_partial_match(common, backtracks);
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
if (common->utf && is_char7_bitset((const sljit_u8 *)common->ctypes - cbit_length + cbit_word, FALSE))
read_char7_type(common, type == OP_NOT_WORDCHAR);
else
#endif
read_char8_type(common, type == OP_NOT_WORDCHAR);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, ctype_word);
add_jump(compiler, backtracks, JUMP(type == OP_WORDCHAR ? SLJIT_ZERO : SLJIT_NOT_ZERO));
return cc;
case OP_ANY:
if (check_str_ptr)
detect_partial_match(common, backtracks);
read_char_range(common, common->nlmin, common->nlmax, TRUE);
if (common->nltype == NLTYPE_FIXED && common->newline > 255)
{
jump[0] = CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, (common->newline >> 8) & 0xff);
end_list = NULL;
if (common->mode != JIT_PARTIAL_HARD_COMPILE)
add_jump(compiler, &end_list, CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0));
else
check_str_end(common, &end_list);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, common->newline & 0xff));
set_jumps(end_list, LABEL());
JUMPHERE(jump[0]);
}
else
check_newlinechar(common, common->nltype, backtracks, TRUE);
return cc;
case OP_ALLANY:
if (check_str_ptr)
detect_partial_match(common, backtracks);
#ifdef SUPPORT_UTF
if (common->utf)
{
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
#if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
#if defined COMPILE_PCRE8
jump[0] = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xc0);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
#elif defined COMPILE_PCRE16
jump[0] = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xd800);
OP2(SLJIT_AND, TMP1, 0, TMP1, 0, SLJIT_IMM, 0xfc00);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, SLJIT_IMM, 0xd800);
OP_FLAGS(SLJIT_MOV, TMP1, 0, SLJIT_EQUAL);
OP2(SLJIT_SHL, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
#endif
JUMPHERE(jump[0]);
#endif /* COMPILE_PCRE[8|16] */
return cc;
}
#endif
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
return cc;
case OP_ANYBYTE:
if (check_str_ptr)
detect_partial_match(common, backtracks);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
return cc;
#ifdef SUPPORT_UTF
#ifdef SUPPORT_UCP
case OP_NOTPROP:
case OP_PROP:
propdata[0] = XCL_HASPROP;
propdata[1] = type == OP_NOTPROP ? XCL_NOTPROP : XCL_PROP;
propdata[2] = cc[0];
propdata[3] = cc[1];
propdata[4] = XCL_END;
if (check_str_ptr)
detect_partial_match(common, backtracks);
compile_xclass_matchingpath(common, propdata, backtracks);
return cc + 2;
#endif
#endif
case OP_ANYNL:
if (check_str_ptr)
detect_partial_match(common, backtracks);
read_char_range(common, common->bsr_nlmin, common->bsr_nlmax, FALSE);
jump[0] = CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_CR);
/* We don't need to handle soft partial matching case. */
end_list = NULL;
if (common->mode != JIT_PARTIAL_HARD_COMPILE)
add_jump(compiler, &end_list, CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0));
else
check_str_end(common, &end_list);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
jump[1] = CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, CHAR_NL);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
jump[2] = JUMP(SLJIT_JUMP);
JUMPHERE(jump[0]);
check_newlinechar(common, common->bsr_nltype, backtracks, FALSE);
set_jumps(end_list, LABEL());
JUMPHERE(jump[1]);
JUMPHERE(jump[2]);
return cc;
case OP_NOT_HSPACE:
case OP_HSPACE:
if (check_str_ptr)
detect_partial_match(common, backtracks);
read_char_range(common, 0x9, 0x3000, type == OP_NOT_HSPACE);
add_jump(compiler, &common->hspace, JUMP(SLJIT_FAST_CALL));
sljit_set_current_flags(compiler, SLJIT_SET_Z);
add_jump(compiler, backtracks, JUMP(type == OP_NOT_HSPACE ? SLJIT_NOT_ZERO : SLJIT_ZERO));
return cc;
case OP_NOT_VSPACE:
case OP_VSPACE:
if (check_str_ptr)
detect_partial_match(common, backtracks);
read_char_range(common, 0xa, 0x2029, type == OP_NOT_VSPACE);
add_jump(compiler, &common->vspace, JUMP(SLJIT_FAST_CALL));
sljit_set_current_flags(compiler, SLJIT_SET_Z);
add_jump(compiler, backtracks, JUMP(type == OP_NOT_VSPACE ? SLJIT_NOT_ZERO : SLJIT_ZERO));
return cc;
#ifdef SUPPORT_UCP
case OP_EXTUNI:
if (check_str_ptr)
detect_partial_match(common, backtracks);
read_char(common);
add_jump(compiler, &common->getucd, JUMP(SLJIT_FAST_CALL));
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, (sljit_sw)PRIV(ucd_records) + SLJIT_OFFSETOF(ucd_record, gbprop));
/* Optimize register allocation: use a real register. */
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS0, STACK_TOP, 0);
OP1(SLJIT_MOV_U8, STACK_TOP, 0, SLJIT_MEM2(TMP1, TMP2), 3);
label = LABEL();
jump[0] = CMP(SLJIT_GREATER_EQUAL, STR_PTR, 0, STR_END, 0);
OP1(SLJIT_MOV, TMP3, 0, STR_PTR, 0);
read_char(common);
add_jump(compiler, &common->getucd, JUMP(SLJIT_FAST_CALL));
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, (sljit_sw)PRIV(ucd_records) + SLJIT_OFFSETOF(ucd_record, gbprop));
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM2(TMP1, TMP2), 3);
OP2(SLJIT_SHL, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, 2);
OP1(SLJIT_MOV_U32, TMP1, 0, SLJIT_MEM1(STACK_TOP), (sljit_sw)PRIV(ucp_gbtable));
OP1(SLJIT_MOV, STACK_TOP, 0, TMP2, 0);
OP2(SLJIT_SHL, TMP2, 0, SLJIT_IMM, 1, TMP2, 0);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, TMP2, 0);
JUMPTO(SLJIT_NOT_ZERO, label);
OP1(SLJIT_MOV, STR_PTR, 0, TMP3, 0);
JUMPHERE(jump[0]);
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
if (common->mode == JIT_PARTIAL_HARD_COMPILE)
{
jump[0] = CMP(SLJIT_LESS, STR_PTR, 0, STR_END, 0);
/* Since we successfully read a char above, partial matching must occure. */
check_partial(common, TRUE);
JUMPHERE(jump[0]);
}
return cc;
#endif
case OP_CHAR:
case OP_CHARI:
length = 1;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(*cc)) length += GET_EXTRALEN(*cc);
#endif
if (common->mode == JIT_COMPILE && check_str_ptr
&& (type == OP_CHAR || !char_has_othercase(common, cc) || char_get_othercase_bit(common, cc) != 0))
{
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(length));
add_jump(compiler, backtracks, CMP(SLJIT_GREATER, STR_PTR, 0, STR_END, 0));
context.length = IN_UCHARS(length);
context.sourcereg = -1;
#if defined SLJIT_UNALIGNED && SLJIT_UNALIGNED
context.ucharptr = 0;
#endif
return byte_sequence_compare(common, type == OP_CHARI, cc, &context, backtracks);
}
if (check_str_ptr)
detect_partial_match(common, backtracks);
#ifdef SUPPORT_UTF
if (common->utf)
{
GETCHAR(c, cc);
}
else
#endif
c = *cc;
if (type == OP_CHAR || !char_has_othercase(common, cc))
{
read_char_range(common, c, c, FALSE);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, c));
return cc + length;
}
oc = char_othercase(common, c);
read_char_range(common, c < oc ? c : oc, c > oc ? c : oc, FALSE);
bit = c ^ oc;
if (is_powerof2(bit))
{
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, bit);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, c | bit));
return cc + length;
}
jump[0] = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, c);
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, oc));
JUMPHERE(jump[0]);
return cc + length;
case OP_NOT:
case OP_NOTI:
if (check_str_ptr)
detect_partial_match(common, backtracks);
length = 1;
#ifdef SUPPORT_UTF
if (common->utf)
{
#ifdef COMPILE_PCRE8
c = *cc;
if (c < 128)
{
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(STR_PTR), 0);
if (type == OP_NOT || !char_has_othercase(common, cc))
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, c));
else
{
/* Since UTF8 code page is fixed, we know that c is in [a-z] or [A-Z] range. */
OP2(SLJIT_OR, TMP2, 0, TMP1, 0, SLJIT_IMM, 0x20);
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, c | 0x20));
}
/* Skip the variable-length character. */
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
jump[0] = CMP(SLJIT_LESS, TMP1, 0, SLJIT_IMM, 0xc0);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)PRIV(utf8_table4) - 0xc0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP1, 0);
JUMPHERE(jump[0]);
return cc + 1;
}
else
#endif /* COMPILE_PCRE8 */
{
GETCHARLEN(c, cc, length);
}
}
else
#endif /* SUPPORT_UTF */
c = *cc;
if (type == OP_NOT || !char_has_othercase(common, cc))
{
read_char_range(common, c, c, TRUE);
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, c));
}
else
{
oc = char_othercase(common, c);
read_char_range(common, c < oc ? c : oc, c > oc ? c : oc, TRUE);
bit = c ^ oc;
if (is_powerof2(bit))
{
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, bit);
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, c | bit));
}
else
{
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, c));
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, oc));
}
}
return cc + length;
case OP_CLASS:
case OP_NCLASS:
if (check_str_ptr)
detect_partial_match(common, backtracks);
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
bit = (common->utf && is_char7_bitset((const sljit_u8 *)cc, type == OP_NCLASS)) ? 127 : 255;
read_char_range(common, 0, bit, type == OP_NCLASS);
#else
read_char_range(common, 0, 255, type == OP_NCLASS);
#endif
if (check_class_ranges(common, (const sljit_u8 *)cc, type == OP_NCLASS, FALSE, backtracks))
return cc + 32 / sizeof(pcre_uchar);
#if defined SUPPORT_UTF && defined COMPILE_PCRE8
jump[0] = NULL;
if (common->utf)
{
jump[0] = CMP(SLJIT_GREATER, TMP1, 0, SLJIT_IMM, bit);
if (type == OP_CLASS)
{
add_jump(compiler, backtracks, jump[0]);
jump[0] = NULL;
}
}
#elif !defined COMPILE_PCRE8
jump[0] = CMP(SLJIT_GREATER, TMP1, 0, SLJIT_IMM, 255);
if (type == OP_CLASS)
{
add_jump(compiler, backtracks, jump[0]);
jump[0] = NULL;
}
#endif /* SUPPORT_UTF && COMPILE_PCRE8 */
OP2(SLJIT_AND, TMP2, 0, TMP1, 0, SLJIT_IMM, 0x7);
OP2(SLJIT_LSHR, TMP1, 0, TMP1, 0, SLJIT_IMM, 3);
OP1(SLJIT_MOV_U8, TMP1, 0, SLJIT_MEM1(TMP1), (sljit_sw)cc);
OP2(SLJIT_SHL, TMP2, 0, SLJIT_IMM, 1, TMP2, 0);
OP2(SLJIT_AND | SLJIT_SET_Z, SLJIT_UNUSED, 0, TMP1, 0, TMP2, 0);
add_jump(compiler, backtracks, JUMP(SLJIT_ZERO));
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
if (jump[0] != NULL)
JUMPHERE(jump[0]);
#endif
return cc + 32 / sizeof(pcre_uchar);
#if defined SUPPORT_UTF || defined COMPILE_PCRE16 || defined COMPILE_PCRE32
case OP_XCLASS:
if (check_str_ptr)
detect_partial_match(common, backtracks);
compile_xclass_matchingpath(common, cc + LINK_SIZE, backtracks);
return cc + GET(cc, 0) - 1;
#endif
}
SLJIT_UNREACHABLE();
return cc;
}
static SLJIT_INLINE pcre_uchar *compile_charn_matchingpath(compiler_common *common, pcre_uchar *cc, pcre_uchar *ccend, jump_list **backtracks)
{
/* This function consumes at least one input character. */
/* To decrease the number of length checks, we try to concatenate the fixed length character sequences. */
DEFINE_COMPILER;
pcre_uchar *ccbegin = cc;
compare_context context;
int size;
context.length = 0;
do
{
if (cc >= ccend)
break;
if (*cc == OP_CHAR)
{
size = 1;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(cc[1]))
size += GET_EXTRALEN(cc[1]);
#endif
}
else if (*cc == OP_CHARI)
{
size = 1;
#ifdef SUPPORT_UTF
if (common->utf)
{
if (char_has_othercase(common, cc + 1) && char_get_othercase_bit(common, cc + 1) == 0)
size = 0;
else if (HAS_EXTRALEN(cc[1]))
size += GET_EXTRALEN(cc[1]);
}
else
#endif
if (char_has_othercase(common, cc + 1) && char_get_othercase_bit(common, cc + 1) == 0)
size = 0;
}
else
size = 0;
cc += 1 + size;
context.length += IN_UCHARS(size);
}
while (size > 0 && context.length <= 128);
cc = ccbegin;
if (context.length > 0)
{
/* We have a fixed-length byte sequence. */
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, context.length);
add_jump(compiler, backtracks, CMP(SLJIT_GREATER, STR_PTR, 0, STR_END, 0));
context.sourcereg = -1;
#if defined SLJIT_UNALIGNED && SLJIT_UNALIGNED
context.ucharptr = 0;
#endif
do cc = byte_sequence_compare(common, *cc == OP_CHARI, cc + 1, &context, backtracks); while (context.length > 0);
return cc;
}
/* A non-fixed length character will be checked if length == 0. */
return compile_char1_matchingpath(common, *cc, cc + 1, backtracks, TRUE);
}
/* Forward definitions. */
static void compile_matchingpath(compiler_common *, pcre_uchar *, pcre_uchar *, backtrack_common *);
static void compile_backtrackingpath(compiler_common *, struct backtrack_common *);
#define PUSH_BACKTRACK(size, ccstart, error) \
do \
{ \
backtrack = sljit_alloc_memory(compiler, (size)); \
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler))) \
return error; \
memset(backtrack, 0, size); \
backtrack->prev = parent->top; \
backtrack->cc = (ccstart); \
parent->top = backtrack; \
} \
while (0)
#define PUSH_BACKTRACK_NOVALUE(size, ccstart) \
do \
{ \
backtrack = sljit_alloc_memory(compiler, (size)); \
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler))) \
return; \
memset(backtrack, 0, size); \
backtrack->prev = parent->top; \
backtrack->cc = (ccstart); \
parent->top = backtrack; \
} \
while (0)
#define BACKTRACK_AS(type) ((type *)backtrack)
static void compile_dnref_search(compiler_common *common, pcre_uchar *cc, jump_list **backtracks)
{
/* The OVECTOR offset goes to TMP2. */
DEFINE_COMPILER;
int count = GET2(cc, 1 + IMM2_SIZE);
pcre_uchar *slot = common->name_table + GET2(cc, 1) * common->name_entry_size;
unsigned int offset;
jump_list *found = NULL;
SLJIT_ASSERT(*cc == OP_DNREF || *cc == OP_DNREFI);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(1));
count--;
while (count-- > 0)
{
offset = GET2(slot, 0) << 1;
GET_LOCAL_BASE(TMP2, 0, OVECTOR(offset));
add_jump(compiler, &found, CMP(SLJIT_NOT_EQUAL, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0));
slot += common->name_entry_size;
}
offset = GET2(slot, 0) << 1;
GET_LOCAL_BASE(TMP2, 0, OVECTOR(offset));
if (backtracks != NULL && !common->jscript_compat)
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0));
set_jumps(found, LABEL());
}
static void compile_ref_matchingpath(compiler_common *common, pcre_uchar *cc, jump_list **backtracks, BOOL withchecks, BOOL emptyfail)
{
DEFINE_COMPILER;
BOOL ref = (*cc == OP_REF || *cc == OP_REFI);
int offset = 0;
struct sljit_jump *jump = NULL;
struct sljit_jump *partial;
struct sljit_jump *nopartial;
if (ref)
{
offset = GET2(cc, 1) << 1;
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset));
/* OVECTOR(1) contains the "string begin - 1" constant. */
if (withchecks && !common->jscript_compat)
add_jump(compiler, backtracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(1)));
}
else
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP2), 0);
#if defined SUPPORT_UTF && defined SUPPORT_UCP
if (common->utf && *cc == OP_REFI)
{
SLJIT_ASSERT(TMP1 == SLJIT_R0 && STACK_TOP == SLJIT_R1);
if (ref)
OP1(SLJIT_MOV, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1));
else
OP1(SLJIT_MOV, SLJIT_R2, 0, SLJIT_MEM1(TMP2), sizeof(sljit_sw));
if (withchecks)
jump = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_R2, 0);
/* No free saved registers so save data on stack. */
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS0, STACK_TOP, 0);
OP1(SLJIT_MOV, SLJIT_R1, 0, STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_R3, 0, STR_END, 0);
sljit_emit_icall(compiler, SLJIT_CALL, SLJIT_RET(SW) | SLJIT_ARG1(SW) | SLJIT_ARG2(SW) | SLJIT_ARG3(SW) | SLJIT_ARG4(SW), SLJIT_IMM, SLJIT_FUNC_OFFSET(do_utf_caselesscmp));
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_RETURN_REG, 0);
if (common->mode == JIT_COMPILE)
add_jump(compiler, backtracks, CMP(SLJIT_LESS_EQUAL, SLJIT_RETURN_REG, 0, SLJIT_IMM, 1));
else
{
OP2(SLJIT_SUB | SLJIT_SET_Z | SLJIT_SET_LESS, SLJIT_UNUSED, 0, SLJIT_RETURN_REG, 0, SLJIT_IMM, 1);
add_jump(compiler, backtracks, JUMP(SLJIT_LESS));
nopartial = JUMP(SLJIT_NOT_EQUAL);
OP1(SLJIT_MOV, STR_PTR, 0, STR_END, 0);
check_partial(common, FALSE);
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
JUMPHERE(nopartial);
}
}
else
#endif /* SUPPORT_UTF && SUPPORT_UCP */
{
if (ref)
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), TMP1, 0);
else
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP2, 0, SLJIT_MEM1(TMP2), sizeof(sljit_sw), TMP1, 0);
if (withchecks)
jump = JUMP(SLJIT_ZERO);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, TMP2, 0);
partial = CMP(SLJIT_GREATER, STR_PTR, 0, STR_END, 0);
if (common->mode == JIT_COMPILE)
add_jump(compiler, backtracks, partial);
add_jump(compiler, *cc == OP_REF ? &common->casefulcmp : &common->caselesscmp, JUMP(SLJIT_FAST_CALL));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, 0));
if (common->mode != JIT_COMPILE)
{
nopartial = JUMP(SLJIT_JUMP);
JUMPHERE(partial);
/* TMP2 -= STR_END - STR_PTR */
OP2(SLJIT_SUB, TMP2, 0, TMP2, 0, STR_PTR, 0);
OP2(SLJIT_ADD, TMP2, 0, TMP2, 0, STR_END, 0);
partial = CMP(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, 0);
OP1(SLJIT_MOV, STR_PTR, 0, STR_END, 0);
add_jump(compiler, *cc == OP_REF ? &common->casefulcmp : &common->caselesscmp, JUMP(SLJIT_FAST_CALL));
add_jump(compiler, backtracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, 0));
JUMPHERE(partial);
check_partial(common, FALSE);
add_jump(compiler, backtracks, JUMP(SLJIT_JUMP));
JUMPHERE(nopartial);
}
}
if (jump != NULL)
{
if (emptyfail)
add_jump(compiler, backtracks, jump);
else
JUMPHERE(jump);
}
}
static SLJIT_INLINE pcre_uchar *compile_ref_iterator_matchingpath(compiler_common *common, pcre_uchar *cc, backtrack_common *parent)
{
DEFINE_COMPILER;
BOOL ref = (*cc == OP_REF || *cc == OP_REFI);
backtrack_common *backtrack;
pcre_uchar type;
int offset = 0;
struct sljit_label *label;
struct sljit_jump *zerolength;
struct sljit_jump *jump = NULL;
pcre_uchar *ccbegin = cc;
int min = 0, max = 0;
BOOL minimize;
PUSH_BACKTRACK(sizeof(ref_iterator_backtrack), cc, NULL);
if (ref)
offset = GET2(cc, 1) << 1;
else
cc += IMM2_SIZE;
type = cc[1 + IMM2_SIZE];
SLJIT_COMPILE_ASSERT((OP_CRSTAR & 0x1) == 0, crstar_opcode_must_be_even);
minimize = (type & 0x1) != 0;
switch(type)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
min = 0;
max = 0;
cc += 1 + IMM2_SIZE + 1;
break;
case OP_CRPLUS:
case OP_CRMINPLUS:
min = 1;
max = 0;
cc += 1 + IMM2_SIZE + 1;
break;
case OP_CRQUERY:
case OP_CRMINQUERY:
min = 0;
max = 1;
cc += 1 + IMM2_SIZE + 1;
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
min = GET2(cc, 1 + IMM2_SIZE + 1);
max = GET2(cc, 1 + IMM2_SIZE + 1 + IMM2_SIZE);
cc += 1 + IMM2_SIZE + 1 + 2 * IMM2_SIZE;
break;
default:
SLJIT_UNREACHABLE();
break;
}
if (!minimize)
{
if (min == 0)
{
allocate_stack(common, 2);
if (ref)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), SLJIT_IMM, 0);
/* Temporary release of STR_PTR. */
OP2(SLJIT_ADD, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, sizeof(sljit_sw));
/* Handles both invalid and empty cases. Since the minimum repeat,
is zero the invalid case is basically the same as an empty case. */
if (ref)
zerolength = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1));
else
{
compile_dnref_search(common, ccbegin, NULL);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP2), 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), POSSESSIVE1, TMP2, 0);
zerolength = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(TMP2), sizeof(sljit_sw));
}
/* Restore if not zero length. */
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, sizeof(sljit_sw));
}
else
{
allocate_stack(common, 1);
if (ref)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
if (ref)
{
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(1)));
zerolength = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1));
}
else
{
compile_dnref_search(common, ccbegin, &backtrack->topbacktracks);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP2), 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), POSSESSIVE1, TMP2, 0);
zerolength = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(TMP2), sizeof(sljit_sw));
}
}
if (min > 1 || max > 1)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), POSSESSIVE0, SLJIT_IMM, 0);
label = LABEL();
if (!ref)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), POSSESSIVE1);
compile_ref_matchingpath(common, ccbegin, &backtrack->topbacktracks, FALSE, FALSE);
if (min > 1 || max > 1)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), POSSESSIVE0);
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), POSSESSIVE0, TMP1, 0);
if (min > 1)
CMPTO(SLJIT_LESS, TMP1, 0, SLJIT_IMM, min, label);
if (max > 1)
{
jump = CMP(SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, max);
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
JUMPTO(SLJIT_JUMP, label);
JUMPHERE(jump);
}
}
if (max == 0)
{
/* Includes min > 1 case as well. */
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
JUMPTO(SLJIT_JUMP, label);
}
JUMPHERE(zerolength);
BACKTRACK_AS(ref_iterator_backtrack)->matchingpath = LABEL();
count_match(common);
return cc;
}
allocate_stack(common, ref ? 2 : 3);
if (ref)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
if (type != OP_CRMINSTAR)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), SLJIT_IMM, 0);
if (min == 0)
{
/* Handles both invalid and empty cases. Since the minimum repeat,
is zero the invalid case is basically the same as an empty case. */
if (ref)
zerolength = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1));
else
{
compile_dnref_search(common, ccbegin, NULL);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP2), 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(2), TMP2, 0);
zerolength = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(TMP2), sizeof(sljit_sw));
}
/* Length is non-zero, we can match real repeats. */
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
jump = JUMP(SLJIT_JUMP);
}
else
{
if (ref)
{
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(1)));
zerolength = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1));
}
else
{
compile_dnref_search(common, ccbegin, &backtrack->topbacktracks);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP2), 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(2), TMP2, 0);
zerolength = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_MEM1(TMP2), sizeof(sljit_sw));
}
}
BACKTRACK_AS(ref_iterator_backtrack)->matchingpath = LABEL();
if (max > 0)
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_GREATER_EQUAL, SLJIT_MEM1(STACK_TOP), STACK(1), SLJIT_IMM, max));
if (!ref)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(2));
compile_ref_matchingpath(common, ccbegin, &backtrack->topbacktracks, TRUE, TRUE);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
if (min > 1)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), TMP1, 0);
CMPTO(SLJIT_LESS, TMP1, 0, SLJIT_IMM, min, BACKTRACK_AS(ref_iterator_backtrack)->matchingpath);
}
else if (max > 0)
OP2(SLJIT_ADD, SLJIT_MEM1(STACK_TOP), STACK(1), SLJIT_MEM1(STACK_TOP), STACK(1), SLJIT_IMM, 1);
if (jump != NULL)
JUMPHERE(jump);
JUMPHERE(zerolength);
count_match(common);
return cc;
}
static SLJIT_INLINE pcre_uchar *compile_recurse_matchingpath(compiler_common *common, pcre_uchar *cc, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
recurse_entry *entry = common->entries;
recurse_entry *prev = NULL;
sljit_sw start = GET(cc, 1);
pcre_uchar *start_cc;
BOOL needs_control_head;
PUSH_BACKTRACK(sizeof(recurse_backtrack), cc, NULL);
/* Inlining simple patterns. */
if (get_framesize(common, common->start + start, NULL, TRUE, &needs_control_head) == no_stack)
{
start_cc = common->start + start;
compile_matchingpath(common, next_opcode(common, start_cc), bracketend(start_cc) - (1 + LINK_SIZE), backtrack);
BACKTRACK_AS(recurse_backtrack)->inlined_pattern = TRUE;
return cc + 1 + LINK_SIZE;
}
while (entry != NULL)
{
if (entry->start == start)
break;
prev = entry;
entry = entry->next;
}
if (entry == NULL)
{
entry = sljit_alloc_memory(compiler, sizeof(recurse_entry));
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return NULL;
entry->next = NULL;
entry->entry = NULL;
entry->calls = NULL;
entry->start = start;
if (prev != NULL)
prev->next = entry;
else
common->entries = entry;
}
if (common->has_set_som && common->mark_ptr != 0)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(0));
allocate_stack(common, 2);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->mark_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), TMP1, 0);
}
else if (common->has_set_som || common->mark_ptr != 0)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->has_set_som ? (int)(OVECTOR(0)) : common->mark_ptr);
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP2, 0);
}
if (entry->entry == NULL)
add_jump(compiler, &entry->calls, JUMP(SLJIT_FAST_CALL));
else
JUMPTO(SLJIT_FAST_CALL, entry->entry);
/* Leave if the match is failed. */
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0));
return cc + 1 + LINK_SIZE;
}
static sljit_s32 SLJIT_FUNC do_callout(struct jit_arguments *arguments, PUBL(callout_block) *callout_block, pcre_uchar **jit_ovector)
{
const pcre_uchar *begin = arguments->begin;
int *offset_vector = arguments->offsets;
int offset_count = arguments->offset_count;
int i;
if (PUBL(callout) == NULL)
return 0;
callout_block->version = 2;
callout_block->callout_data = arguments->callout_data;
/* Offsets in subject. */
callout_block->subject_length = arguments->end - arguments->begin;
callout_block->start_match = (pcre_uchar*)callout_block->subject - arguments->begin;
callout_block->current_position = (pcre_uchar*)callout_block->offset_vector - arguments->begin;
#if defined COMPILE_PCRE8
callout_block->subject = (PCRE_SPTR)begin;
#elif defined COMPILE_PCRE16
callout_block->subject = (PCRE_SPTR16)begin;
#elif defined COMPILE_PCRE32
callout_block->subject = (PCRE_SPTR32)begin;
#endif
/* Convert and copy the JIT offset vector to the offset_vector array. */
callout_block->capture_top = 0;
callout_block->offset_vector = offset_vector;
for (i = 2; i < offset_count; i += 2)
{
offset_vector[i] = jit_ovector[i] - begin;
offset_vector[i + 1] = jit_ovector[i + 1] - begin;
if (jit_ovector[i] >= begin)
callout_block->capture_top = i;
}
callout_block->capture_top = (callout_block->capture_top >> 1) + 1;
if (offset_count > 0)
offset_vector[0] = -1;
if (offset_count > 1)
offset_vector[1] = -1;
return (*PUBL(callout))(callout_block);
}
/* Aligning to 8 byte. */
#define CALLOUT_ARG_SIZE \
(((int)sizeof(PUBL(callout_block)) + 7) & ~7)
#define CALLOUT_ARG_OFFSET(arg) \
SLJIT_OFFSETOF(PUBL(callout_block), arg)
static SLJIT_INLINE pcre_uchar *compile_callout_matchingpath(compiler_common *common, pcre_uchar *cc, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
PUSH_BACKTRACK(sizeof(backtrack_common), cc, NULL);
allocate_stack(common, CALLOUT_ARG_SIZE / sizeof(sljit_sw));
SLJIT_ASSERT(common->capture_last_ptr != 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr);
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV_S32, SLJIT_MEM1(STACK_TOP), CALLOUT_ARG_OFFSET(callout_number), SLJIT_IMM, cc[1]);
OP1(SLJIT_MOV_S32, SLJIT_MEM1(STACK_TOP), CALLOUT_ARG_OFFSET(capture_last), TMP2, 0);
/* These pointer sized fields temporarly stores internal variables. */
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(0));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), CALLOUT_ARG_OFFSET(offset_vector), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), CALLOUT_ARG_OFFSET(subject), TMP2, 0);
if (common->mark_ptr != 0)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, mark_ptr));
OP1(SLJIT_MOV_S32, SLJIT_MEM1(STACK_TOP), CALLOUT_ARG_OFFSET(pattern_position), SLJIT_IMM, GET(cc, 2));
OP1(SLJIT_MOV_S32, SLJIT_MEM1(STACK_TOP), CALLOUT_ARG_OFFSET(next_item_length), SLJIT_IMM, GET(cc, 2 + LINK_SIZE));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), CALLOUT_ARG_OFFSET(mark), (common->mark_ptr != 0) ? TMP2 : SLJIT_IMM, 0);
/* Needed to save important temporary registers. */
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS0, STACK_TOP, 0);
/* SLJIT_R0 = arguments */
OP1(SLJIT_MOV, SLJIT_R1, 0, STACK_TOP, 0);
GET_LOCAL_BASE(SLJIT_R2, 0, OVECTOR_START);
sljit_emit_icall(compiler, SLJIT_CALL, SLJIT_RET(S32) | SLJIT_ARG1(SW) | SLJIT_ARG2(SW) | SLJIT_ARG3(SW), SLJIT_IMM, SLJIT_FUNC_OFFSET(do_callout));
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
free_stack(common, CALLOUT_ARG_SIZE / sizeof(sljit_sw));
/* Check return value. */
OP2(SLJIT_SUB32 | SLJIT_SET_Z | SLJIT_SET_SIG_GREATER, SLJIT_UNUSED, 0, SLJIT_RETURN_REG, 0, SLJIT_IMM, 0);
add_jump(compiler, &backtrack->topbacktracks, JUMP(SLJIT_SIG_GREATER32));
if (common->forced_quit_label == NULL)
add_jump(compiler, &common->forced_quit, JUMP(SLJIT_NOT_EQUAL32) /* SIG_LESS */);
else
JUMPTO(SLJIT_NOT_EQUAL32 /* SIG_LESS */, common->forced_quit_label);
return cc + 2 + 2 * LINK_SIZE;
}
#undef CALLOUT_ARG_SIZE
#undef CALLOUT_ARG_OFFSET
static SLJIT_INLINE BOOL assert_needs_str_ptr_saving(pcre_uchar *cc)
{
while (TRUE)
{
switch (*cc)
{
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
case OP_CIRC:
case OP_CIRCM:
case OP_DOLL:
case OP_DOLLM:
case OP_CALLOUT:
case OP_ALT:
cc += PRIV(OP_lengths)[*cc];
break;
case OP_KET:
return FALSE;
default:
return TRUE;
}
}
}
static pcre_uchar *compile_assert_matchingpath(compiler_common *common, pcre_uchar *cc, assert_backtrack *backtrack, BOOL conditional)
{
DEFINE_COMPILER;
int framesize;
int extrasize;
BOOL needs_control_head;
int private_data_ptr;
backtrack_common altbacktrack;
pcre_uchar *ccbegin;
pcre_uchar opcode;
pcre_uchar bra = OP_BRA;
jump_list *tmp = NULL;
jump_list **target = (conditional) ? &backtrack->condfailed : &backtrack->common.topbacktracks;
jump_list **found;
/* Saving previous accept variables. */
BOOL save_local_exit = common->local_exit;
BOOL save_positive_assert = common->positive_assert;
then_trap_backtrack *save_then_trap = common->then_trap;
struct sljit_label *save_quit_label = common->quit_label;
struct sljit_label *save_accept_label = common->accept_label;
jump_list *save_quit = common->quit;
jump_list *save_positive_assert_quit = common->positive_assert_quit;
jump_list *save_accept = common->accept;
struct sljit_jump *jump;
struct sljit_jump *brajump = NULL;
/* Assert captures then. */
common->then_trap = NULL;
if (*cc == OP_BRAZERO || *cc == OP_BRAMINZERO)
{
SLJIT_ASSERT(!conditional);
bra = *cc;
cc++;
}
private_data_ptr = PRIVATE_DATA(cc);
SLJIT_ASSERT(private_data_ptr != 0);
framesize = get_framesize(common, cc, NULL, FALSE, &needs_control_head);
backtrack->framesize = framesize;
backtrack->private_data_ptr = private_data_ptr;
opcode = *cc;
SLJIT_ASSERT(opcode >= OP_ASSERT && opcode <= OP_ASSERTBACK_NOT);
found = (opcode == OP_ASSERT || opcode == OP_ASSERTBACK) ? &tmp : target;
ccbegin = cc;
cc += GET(cc, 1);
if (bra == OP_BRAMINZERO)
{
/* This is a braminzero backtrack path. */
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
brajump = CMP(SLJIT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0);
}
if (framesize < 0)
{
extrasize = 1;
if (bra == OP_BRA && !assert_needs_str_ptr_saving(ccbegin + 1 + LINK_SIZE))
extrasize = 0;
if (needs_control_head)
extrasize++;
if (framesize == no_frame)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STACK_TOP, 0);
if (extrasize > 0)
allocate_stack(common, extrasize);
if (needs_control_head)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
if (extrasize > 0)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
if (needs_control_head)
{
SLJIT_ASSERT(extrasize == 2);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_IMM, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), TMP1, 0);
}
}
else
{
extrasize = needs_control_head ? 3 : 2;
allocate_stack(common, framesize + extrasize);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
OP2(SLJIT_ADD, TMP2, 0, STACK_TOP, 0, SLJIT_IMM, (framesize + extrasize) * sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, TMP2, 0);
if (needs_control_head)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
if (needs_control_head)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(2), TMP1, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_IMM, 0);
}
else
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), TMP1, 0);
init_frame(common, ccbegin, NULL, framesize + extrasize - 1, extrasize, FALSE);
}
memset(&altbacktrack, 0, sizeof(backtrack_common));
if (opcode == OP_ASSERT_NOT || opcode == OP_ASSERTBACK_NOT)
{
/* Negative assert is stronger than positive assert. */
common->local_exit = TRUE;
common->quit_label = NULL;
common->quit = NULL;
common->positive_assert = FALSE;
}
else
common->positive_assert = TRUE;
common->positive_assert_quit = NULL;
while (1)
{
common->accept_label = NULL;
common->accept = NULL;
altbacktrack.top = NULL;
altbacktrack.topbacktracks = NULL;
if (*ccbegin == OP_ALT && extrasize > 0)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
altbacktrack.cc = ccbegin;
compile_matchingpath(common, ccbegin + 1 + LINK_SIZE, cc, &altbacktrack);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
{
if (opcode == OP_ASSERT_NOT || opcode == OP_ASSERTBACK_NOT)
{
common->local_exit = save_local_exit;
common->quit_label = save_quit_label;
common->quit = save_quit;
}
common->positive_assert = save_positive_assert;
common->then_trap = save_then_trap;
common->accept_label = save_accept_label;
common->positive_assert_quit = save_positive_assert_quit;
common->accept = save_accept;
return NULL;
}
common->accept_label = LABEL();
if (common->accept != NULL)
set_jumps(common->accept, common->accept_label);
/* Reset stack. */
if (framesize < 0)
{
if (framesize == no_frame)
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
else if (extrasize > 0)
free_stack(common, extrasize);
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(-1));
}
else
{
if ((opcode != OP_ASSERT_NOT && opcode != OP_ASSERTBACK_NOT) || conditional)
{
/* We don't need to keep the STR_PTR, only the previous private_data_ptr. */
OP2(SLJIT_SUB, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_IMM, (framesize + 1) * sizeof(sljit_sw));
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(-1));
}
else
{
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(-framesize - 2));
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
}
}
if (opcode == OP_ASSERT_NOT || opcode == OP_ASSERTBACK_NOT)
{
/* We know that STR_PTR was stored on the top of the stack. */
if (conditional)
{
if (extrasize > 0)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), needs_control_head ? STACK(-2) : STACK(-1));
}
else if (bra == OP_BRAZERO)
{
if (framesize < 0)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(-extrasize));
else
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(-framesize - 1));
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(-framesize - extrasize));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, TMP1, 0);
}
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
}
else if (framesize >= 0)
{
/* For OP_BRA and OP_BRAMINZERO. */
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(-framesize - 1));
}
}
add_jump(compiler, found, JUMP(SLJIT_JUMP));
compile_backtrackingpath(common, altbacktrack.top);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
{
if (opcode == OP_ASSERT_NOT || opcode == OP_ASSERTBACK_NOT)
{
common->local_exit = save_local_exit;
common->quit_label = save_quit_label;
common->quit = save_quit;
}
common->positive_assert = save_positive_assert;
common->then_trap = save_then_trap;
common->accept_label = save_accept_label;
common->positive_assert_quit = save_positive_assert_quit;
common->accept = save_accept;
return NULL;
}
set_jumps(altbacktrack.topbacktracks, LABEL());
if (*cc != OP_ALT)
break;
ccbegin = cc;
cc += GET(cc, 1);
}
if (opcode == OP_ASSERT_NOT || opcode == OP_ASSERTBACK_NOT)
{
SLJIT_ASSERT(common->positive_assert_quit == NULL);
/* Makes the check less complicated below. */
common->positive_assert_quit = common->quit;
}
/* None of them matched. */
if (common->positive_assert_quit != NULL)
{
jump = JUMP(SLJIT_JUMP);
set_jumps(common->positive_assert_quit, LABEL());
SLJIT_ASSERT(framesize != no_stack);
if (framesize < 0)
OP2(SLJIT_SUB, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_IMM, extrasize * sizeof(sljit_sw));
else
{
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, (framesize + extrasize) * sizeof(sljit_sw));
}
JUMPHERE(jump);
}
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(1));
if (opcode == OP_ASSERT || opcode == OP_ASSERTBACK)
{
/* Assert is failed. */
if ((conditional && extrasize > 0) || bra == OP_BRAZERO)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
if (framesize < 0)
{
/* The topmost item should be 0. */
if (bra == OP_BRAZERO)
{
if (extrasize == 2)
free_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
}
else if (extrasize > 0)
free_stack(common, extrasize);
}
else
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(extrasize - 1));
/* The topmost item should be 0. */
if (bra == OP_BRAZERO)
{
free_stack(common, framesize + extrasize - 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
}
else
free_stack(common, framesize + extrasize);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, TMP1, 0);
}
jump = JUMP(SLJIT_JUMP);
if (bra != OP_BRAZERO)
add_jump(compiler, target, jump);
/* Assert is successful. */
set_jumps(tmp, LABEL());
if (framesize < 0)
{
/* We know that STR_PTR was stored on the top of the stack. */
if (extrasize > 0)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(-extrasize));
/* Keep the STR_PTR on the top of the stack. */
if (bra == OP_BRAZERO)
{
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, sizeof(sljit_sw));
if (extrasize == 2)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
}
else if (bra == OP_BRAMINZERO)
{
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
}
}
else
{
if (bra == OP_BRA)
{
/* We don't need to keep the STR_PTR, only the previous private_data_ptr. */
OP2(SLJIT_SUB, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_IMM, (framesize + 1) * sizeof(sljit_sw));
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(-extrasize + 1));
}
else
{
/* We don't need to keep the STR_PTR, only the previous private_data_ptr. */
OP2(SLJIT_SUB, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_IMM, (framesize + 2) * sizeof(sljit_sw));
if (extrasize == 2)
{
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
if (bra == OP_BRAMINZERO)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
}
else
{
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), bra == OP_BRAZERO ? STR_PTR : SLJIT_IMM, 0);
}
}
}
if (bra == OP_BRAZERO)
{
backtrack->matchingpath = LABEL();
SET_LABEL(jump, backtrack->matchingpath);
}
else if (bra == OP_BRAMINZERO)
{
JUMPTO(SLJIT_JUMP, backtrack->matchingpath);
JUMPHERE(brajump);
if (framesize >= 0)
{
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(-framesize - 1));
}
set_jumps(backtrack->common.topbacktracks, LABEL());
}
}
else
{
/* AssertNot is successful. */
if (framesize < 0)
{
if (extrasize > 0)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
if (bra != OP_BRA)
{
if (extrasize == 2)
free_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
}
else if (extrasize > 0)
free_stack(common, extrasize);
}
else
{
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(extrasize - 1));
/* The topmost item should be 0. */
if (bra != OP_BRA)
{
free_stack(common, framesize + extrasize - 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
}
else
free_stack(common, framesize + extrasize);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, TMP1, 0);
}
if (bra == OP_BRAZERO)
backtrack->matchingpath = LABEL();
else if (bra == OP_BRAMINZERO)
{
JUMPTO(SLJIT_JUMP, backtrack->matchingpath);
JUMPHERE(brajump);
}
if (bra != OP_BRA)
{
SLJIT_ASSERT(found == &backtrack->common.topbacktracks);
set_jumps(backtrack->common.topbacktracks, LABEL());
backtrack->common.topbacktracks = NULL;
}
}
if (opcode == OP_ASSERT_NOT || opcode == OP_ASSERTBACK_NOT)
{
common->local_exit = save_local_exit;
common->quit_label = save_quit_label;
common->quit = save_quit;
}
common->positive_assert = save_positive_assert;
common->then_trap = save_then_trap;
common->accept_label = save_accept_label;
common->positive_assert_quit = save_positive_assert_quit;
common->accept = save_accept;
return cc + 1 + LINK_SIZE;
}
static SLJIT_INLINE void match_once_common(compiler_common *common, pcre_uchar ket, int framesize, int private_data_ptr, BOOL has_alternatives, BOOL needs_control_head)
{
DEFINE_COMPILER;
int stacksize;
if (framesize < 0)
{
if (framesize == no_frame)
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
else
{
stacksize = needs_control_head ? 1 : 0;
if (ket != OP_KET || has_alternatives)
stacksize++;
if (stacksize > 0)
free_stack(common, stacksize);
}
if (needs_control_head)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), (ket != OP_KET || has_alternatives) ? STACK(-2) : STACK(-1));
/* TMP2 which is set here used by OP_KETRMAX below. */
if (ket == OP_KETRMAX)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(-1));
else if (ket == OP_KETRMIN)
{
/* Move the STR_PTR to the private_data_ptr. */
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(-1));
}
}
else
{
stacksize = (ket != OP_KET || has_alternatives) ? 2 : 1;
OP2(SLJIT_SUB, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_IMM, (framesize + stacksize) * sizeof(sljit_sw));
if (needs_control_head)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(-1));
if (ket == OP_KETRMAX)
{
/* TMP2 which is set here used by OP_KETRMAX below. */
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
}
}
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, TMP1, 0);
}
static SLJIT_INLINE int match_capture_common(compiler_common *common, int stacksize, int offset, int private_data_ptr)
{
DEFINE_COMPILER;
if (common->capture_last_ptr != 0)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr, SLJIT_IMM, offset >> 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), TMP1, 0);
stacksize++;
}
if (common->optimized_cbracket[offset >> 1] == 0)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), TMP1, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize + 1), TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0);
stacksize += 2;
}
return stacksize;
}
/*
Handling bracketed expressions is probably the most complex part.
Stack layout naming characters:
S - Push the current STR_PTR
0 - Push a 0 (NULL)
A - Push the current STR_PTR. Needed for restoring the STR_PTR
before the next alternative. Not pushed if there are no alternatives.
M - Any values pushed by the current alternative. Can be empty, or anything.
C - Push the previous OVECTOR(i), OVECTOR(i+1) and OVECTOR_PRIV(i) to the stack.
L - Push the previous local (pointed by localptr) to the stack
() - opional values stored on the stack
()* - optonal, can be stored multiple times
The following list shows the regular expression templates, their PCRE byte codes
and stack layout supported by pcre-sljit.
(?:) OP_BRA | OP_KET A M
() OP_CBRA | OP_KET C M
(?:)+ OP_BRA | OP_KETRMAX 0 A M S ( A M S )*
OP_SBRA | OP_KETRMAX 0 L M S ( L M S )*
(?:)+? OP_BRA | OP_KETRMIN 0 A M S ( A M S )*
OP_SBRA | OP_KETRMIN 0 L M S ( L M S )*
()+ OP_CBRA | OP_KETRMAX 0 C M S ( C M S )*
OP_SCBRA | OP_KETRMAX 0 C M S ( C M S )*
()+? OP_CBRA | OP_KETRMIN 0 C M S ( C M S )*
OP_SCBRA | OP_KETRMIN 0 C M S ( C M S )*
(?:)? OP_BRAZERO | OP_BRA | OP_KET S ( A M 0 )
(?:)?? OP_BRAMINZERO | OP_BRA | OP_KET S ( A M 0 )
()? OP_BRAZERO | OP_CBRA | OP_KET S ( C M 0 )
()?? OP_BRAMINZERO | OP_CBRA | OP_KET S ( C M 0 )
(?:)* OP_BRAZERO | OP_BRA | OP_KETRMAX S 0 ( A M S )*
OP_BRAZERO | OP_SBRA | OP_KETRMAX S 0 ( L M S )*
(?:)*? OP_BRAMINZERO | OP_BRA | OP_KETRMIN S 0 ( A M S )*
OP_BRAMINZERO | OP_SBRA | OP_KETRMIN S 0 ( L M S )*
()* OP_BRAZERO | OP_CBRA | OP_KETRMAX S 0 ( C M S )*
OP_BRAZERO | OP_SCBRA | OP_KETRMAX S 0 ( C M S )*
()*? OP_BRAMINZERO | OP_CBRA | OP_KETRMIN S 0 ( C M S )*
OP_BRAMINZERO | OP_SCBRA | OP_KETRMIN S 0 ( C M S )*
Stack layout naming characters:
A - Push the alternative index (starting from 0) on the stack.
Not pushed if there is no alternatives.
M - Any values pushed by the current alternative. Can be empty, or anything.
The next list shows the possible content of a bracket:
(|) OP_*BRA | OP_ALT ... M A
(?()|) OP_*COND | OP_ALT M A
(?>|) OP_ONCE | OP_ALT ... [stack trace] M A
(?>|) OP_ONCE_NC | OP_ALT ... [stack trace] M A
Or nothing, if trace is unnecessary
*/
static pcre_uchar *compile_bracket_matchingpath(compiler_common *common, pcre_uchar *cc, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
pcre_uchar opcode;
int private_data_ptr = 0;
int offset = 0;
int i, stacksize;
int repeat_ptr = 0, repeat_length = 0;
int repeat_type = 0, repeat_count = 0;
pcre_uchar *ccbegin;
pcre_uchar *matchingpath;
pcre_uchar *slot;
pcre_uchar bra = OP_BRA;
pcre_uchar ket;
assert_backtrack *assert;
BOOL has_alternatives;
BOOL needs_control_head = FALSE;
struct sljit_jump *jump;
struct sljit_jump *skip;
struct sljit_label *rmax_label = NULL;
struct sljit_jump *braminzero = NULL;
PUSH_BACKTRACK(sizeof(bracket_backtrack), cc, NULL);
if (*cc == OP_BRAZERO || *cc == OP_BRAMINZERO)
{
bra = *cc;
cc++;
opcode = *cc;
}
opcode = *cc;
ccbegin = cc;
matchingpath = bracketend(cc) - 1 - LINK_SIZE;
ket = *matchingpath;
if (ket == OP_KET && PRIVATE_DATA(matchingpath) != 0)
{
repeat_ptr = PRIVATE_DATA(matchingpath);
repeat_length = PRIVATE_DATA(matchingpath + 1);
repeat_type = PRIVATE_DATA(matchingpath + 2);
repeat_count = PRIVATE_DATA(matchingpath + 3);
SLJIT_ASSERT(repeat_length != 0 && repeat_type != 0 && repeat_count != 0);
if (repeat_type == OP_UPTO)
ket = OP_KETRMAX;
if (repeat_type == OP_MINUPTO)
ket = OP_KETRMIN;
}
if ((opcode == OP_COND || opcode == OP_SCOND) && cc[1 + LINK_SIZE] == OP_DEF)
{
/* Drop this bracket_backtrack. */
parent->top = backtrack->prev;
return matchingpath + 1 + LINK_SIZE + repeat_length;
}
matchingpath = ccbegin + 1 + LINK_SIZE;
SLJIT_ASSERT(ket == OP_KET || ket == OP_KETRMAX || ket == OP_KETRMIN);
SLJIT_ASSERT(!((bra == OP_BRAZERO && ket == OP_KETRMIN) || (bra == OP_BRAMINZERO && ket == OP_KETRMAX)));
cc += GET(cc, 1);
has_alternatives = *cc == OP_ALT;
if (SLJIT_UNLIKELY(opcode == OP_COND || opcode == OP_SCOND))
has_alternatives = (*matchingpath == OP_RREF || *matchingpath == OP_DNRREF || *matchingpath == OP_FAIL) ? FALSE : TRUE;
if (SLJIT_UNLIKELY(opcode == OP_COND) && (*cc == OP_KETRMAX || *cc == OP_KETRMIN))
opcode = OP_SCOND;
if (SLJIT_UNLIKELY(opcode == OP_ONCE_NC))
opcode = OP_ONCE;
if (opcode == OP_CBRA || opcode == OP_SCBRA)
{
/* Capturing brackets has a pre-allocated space. */
offset = GET2(ccbegin, 1 + LINK_SIZE);
if (common->optimized_cbracket[offset] == 0)
{
private_data_ptr = OVECTOR_PRIV(offset);
offset <<= 1;
}
else
{
offset <<= 1;
private_data_ptr = OVECTOR(offset);
}
BACKTRACK_AS(bracket_backtrack)->private_data_ptr = private_data_ptr;
matchingpath += IMM2_SIZE;
}
else if (opcode == OP_ONCE || opcode == OP_SBRA || opcode == OP_SCOND)
{
/* Other brackets simply allocate the next entry. */
private_data_ptr = PRIVATE_DATA(ccbegin);
SLJIT_ASSERT(private_data_ptr != 0);
BACKTRACK_AS(bracket_backtrack)->private_data_ptr = private_data_ptr;
if (opcode == OP_ONCE)
BACKTRACK_AS(bracket_backtrack)->u.framesize = get_framesize(common, ccbegin, NULL, FALSE, &needs_control_head);
}
/* Instructions before the first alternative. */
stacksize = 0;
if (ket == OP_KETRMAX || (ket == OP_KETRMIN && bra != OP_BRAMINZERO))
stacksize++;
if (bra == OP_BRAZERO)
stacksize++;
if (stacksize > 0)
allocate_stack(common, stacksize);
stacksize = 0;
if (ket == OP_KETRMAX || (ket == OP_KETRMIN && bra != OP_BRAMINZERO))
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), SLJIT_IMM, 0);
stacksize++;
}
if (bra == OP_BRAZERO)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), STR_PTR, 0);
if (bra == OP_BRAMINZERO)
{
/* This is a backtrack path! (Since the try-path of OP_BRAMINZERO matches to the empty string) */
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
if (ket != OP_KETRMIN)
{
free_stack(common, 1);
braminzero = CMP(SLJIT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0);
}
else
{
if (opcode == OP_ONCE || opcode >= OP_SBRA)
{
jump = CMP(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0);
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
/* Nothing stored during the first run. */
skip = JUMP(SLJIT_JUMP);
JUMPHERE(jump);
/* Checking zero-length iteration. */
if (opcode != OP_ONCE || BACKTRACK_AS(bracket_backtrack)->u.framesize < 0)
{
/* When we come from outside, private_data_ptr contains the previous STR_PTR. */
braminzero = CMP(SLJIT_EQUAL, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
}
else
{
/* Except when the whole stack frame must be saved. */
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
braminzero = CMP(SLJIT_EQUAL, STR_PTR, 0, SLJIT_MEM1(TMP1), STACK(-BACKTRACK_AS(bracket_backtrack)->u.framesize - 2));
}
JUMPHERE(skip);
}
else
{
jump = CMP(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0);
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
JUMPHERE(jump);
}
}
}
if (repeat_type != 0)
{
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_IMM, repeat_count);
if (repeat_type == OP_EXACT)
rmax_label = LABEL();
}
if (ket == OP_KETRMIN)
BACKTRACK_AS(bracket_backtrack)->recursive_matchingpath = LABEL();
if (ket == OP_KETRMAX)
{
rmax_label = LABEL();
if (has_alternatives && opcode != OP_ONCE && opcode < OP_SBRA && repeat_type == 0)
BACKTRACK_AS(bracket_backtrack)->alternative_matchingpath = rmax_label;
}
/* Handling capturing brackets and alternatives. */
if (opcode == OP_ONCE)
{
stacksize = 0;
if (needs_control_head)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
stacksize++;
}
if (BACKTRACK_AS(bracket_backtrack)->u.framesize < 0)
{
/* Neither capturing brackets nor recursions are found in the block. */
if (ket == OP_KETRMIN)
{
stacksize += 2;
if (!needs_control_head)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
}
else
{
if (BACKTRACK_AS(bracket_backtrack)->u.framesize == no_frame)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STACK_TOP, 0);
if (ket == OP_KETRMAX || has_alternatives)
stacksize++;
}
if (stacksize > 0)
allocate_stack(common, stacksize);
stacksize = 0;
if (needs_control_head)
{
stacksize++;
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP2, 0);
}
if (ket == OP_KETRMIN)
{
if (needs_control_head)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), STR_PTR, 0);
if (BACKTRACK_AS(bracket_backtrack)->u.framesize == no_frame)
OP2(SLJIT_ADD, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STACK_TOP, 0, SLJIT_IMM, needs_control_head ? (2 * sizeof(sljit_sw)) : sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize + 1), TMP2, 0);
}
else if (ket == OP_KETRMAX || has_alternatives)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), STR_PTR, 0);
}
else
{
if (ket != OP_KET || has_alternatives)
stacksize++;
stacksize += BACKTRACK_AS(bracket_backtrack)->u.framesize + 1;
allocate_stack(common, stacksize);
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP2, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
OP2(SLJIT_ADD, TMP2, 0, STACK_TOP, 0, SLJIT_IMM, stacksize * sizeof(sljit_sw));
stacksize = needs_control_head ? 1 : 0;
if (ket != OP_KET || has_alternatives)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, TMP2, 0);
stacksize++;
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), TMP1, 0);
}
else
{
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), TMP1, 0);
}
init_frame(common, ccbegin, NULL, BACKTRACK_AS(bracket_backtrack)->u.framesize + stacksize, stacksize + 1, FALSE);
}
}
else if (opcode == OP_CBRA || opcode == OP_SCBRA)
{
/* Saving the previous values. */
if (common->optimized_cbracket[offset >> 1] != 0)
{
SLJIT_ASSERT(private_data_ptr == OVECTOR(offset));
allocate_stack(common, 2);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr + sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP1, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), TMP2, 0);
}
else
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP2, 0);
}
}
else if (opcode == OP_SBRA || opcode == OP_SCOND)
{
/* Saving the previous value. */
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP2, 0);
}
else if (has_alternatives)
{
/* Pushing the starting string pointer. */
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
}
/* Generating code for the first alternative. */
if (opcode == OP_COND || opcode == OP_SCOND)
{
if (*matchingpath == OP_CREF)
{
SLJIT_ASSERT(has_alternatives);
add_jump(compiler, &(BACKTRACK_AS(bracket_backtrack)->u.condfailed),
CMP(SLJIT_EQUAL, SLJIT_MEM1(SLJIT_SP), OVECTOR(GET2(matchingpath, 1) << 1), SLJIT_MEM1(SLJIT_SP), OVECTOR(1)));
matchingpath += 1 + IMM2_SIZE;
}
else if (*matchingpath == OP_DNCREF)
{
SLJIT_ASSERT(has_alternatives);
i = GET2(matchingpath, 1 + IMM2_SIZE);
slot = common->name_table + GET2(matchingpath, 1) * common->name_entry_size;
OP1(SLJIT_MOV, TMP3, 0, STR_PTR, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(1));
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(GET2(slot, 0) << 1), TMP1, 0);
slot += common->name_entry_size;
i--;
while (i-- > 0)
{
OP2(SLJIT_SUB, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(GET2(slot, 0) << 1), TMP1, 0);
OP2(SLJIT_OR | SLJIT_SET_Z, TMP2, 0, TMP2, 0, STR_PTR, 0);
slot += common->name_entry_size;
}
OP1(SLJIT_MOV, STR_PTR, 0, TMP3, 0);
add_jump(compiler, &(BACKTRACK_AS(bracket_backtrack)->u.condfailed), JUMP(SLJIT_ZERO));
matchingpath += 1 + 2 * IMM2_SIZE;
}
else if (*matchingpath == OP_RREF || *matchingpath == OP_DNRREF || *matchingpath == OP_FAIL)
{
/* Never has other case. */
BACKTRACK_AS(bracket_backtrack)->u.condfailed = NULL;
SLJIT_ASSERT(!has_alternatives);
if (*matchingpath == OP_FAIL)
stacksize = 0;
else if (*matchingpath == OP_RREF)
{
stacksize = GET2(matchingpath, 1);
if (common->currententry == NULL)
stacksize = 0;
else if (stacksize == RREF_ANY)
stacksize = 1;
else if (common->currententry->start == 0)
stacksize = stacksize == 0;
else
stacksize = stacksize == (int)GET2(common->start, common->currententry->start + 1 + LINK_SIZE);
if (stacksize != 0)
matchingpath += 1 + IMM2_SIZE;
}
else
{
if (common->currententry == NULL || common->currententry->start == 0)
stacksize = 0;
else
{
stacksize = GET2(matchingpath, 1 + IMM2_SIZE);
slot = common->name_table + GET2(matchingpath, 1) * common->name_entry_size;
i = (int)GET2(common->start, common->currententry->start + 1 + LINK_SIZE);
while (stacksize > 0)
{
if ((int)GET2(slot, 0) == i)
break;
slot += common->name_entry_size;
stacksize--;
}
}
if (stacksize != 0)
matchingpath += 1 + 2 * IMM2_SIZE;
}
/* The stacksize == 0 is a common "else" case. */
if (stacksize == 0)
{
if (*cc == OP_ALT)
{
matchingpath = cc + 1 + LINK_SIZE;
cc += GET(cc, 1);
}
else
matchingpath = cc;
}
}
else
{
SLJIT_ASSERT(has_alternatives && *matchingpath >= OP_ASSERT && *matchingpath <= OP_ASSERTBACK_NOT);
/* Similar code as PUSH_BACKTRACK macro. */
assert = sljit_alloc_memory(compiler, sizeof(assert_backtrack));
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return NULL;
memset(assert, 0, sizeof(assert_backtrack));
assert->common.cc = matchingpath;
BACKTRACK_AS(bracket_backtrack)->u.assert = assert;
matchingpath = compile_assert_matchingpath(common, matchingpath, assert, TRUE);
}
}
compile_matchingpath(common, matchingpath, cc, backtrack);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return NULL;
if (opcode == OP_ONCE)
match_once_common(common, ket, BACKTRACK_AS(bracket_backtrack)->u.framesize, private_data_ptr, has_alternatives, needs_control_head);
stacksize = 0;
if (repeat_type == OP_MINUPTO)
{
/* We need to preserve the counter. TMP2 will be used below. */
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), repeat_ptr);
stacksize++;
}
if (ket != OP_KET || bra != OP_BRA)
stacksize++;
if (offset != 0)
{
if (common->capture_last_ptr != 0)
stacksize++;
if (common->optimized_cbracket[offset >> 1] == 0)
stacksize += 2;
}
if (has_alternatives && opcode != OP_ONCE)
stacksize++;
if (stacksize > 0)
allocate_stack(common, stacksize);
stacksize = 0;
if (repeat_type == OP_MINUPTO)
{
/* TMP2 was set above. */
OP2(SLJIT_SUB, SLJIT_MEM1(STACK_TOP), STACK(stacksize), TMP2, 0, SLJIT_IMM, 1);
stacksize++;
}
if (ket != OP_KET || bra != OP_BRA)
{
if (ket != OP_KET)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), STR_PTR, 0);
else
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), SLJIT_IMM, 0);
stacksize++;
}
if (offset != 0)
stacksize = match_capture_common(common, stacksize, offset, private_data_ptr);
if (has_alternatives)
{
if (opcode != OP_ONCE)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), SLJIT_IMM, 0);
if (ket != OP_KETRMAX)
BACKTRACK_AS(bracket_backtrack)->alternative_matchingpath = LABEL();
}
/* Must be after the matchingpath label. */
if (offset != 0 && common->optimized_cbracket[offset >> 1] != 0)
{
SLJIT_ASSERT(private_data_ptr == OVECTOR(offset + 0));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), STR_PTR, 0);
}
if (ket == OP_KETRMAX)
{
if (repeat_type != 0)
{
if (has_alternatives)
BACKTRACK_AS(bracket_backtrack)->alternative_matchingpath = LABEL();
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, rmax_label);
/* Drop STR_PTR for greedy plus quantifier. */
if (opcode != OP_ONCE)
free_stack(common, 1);
}
else if (opcode == OP_ONCE || opcode >= OP_SBRA)
{
if (has_alternatives)
BACKTRACK_AS(bracket_backtrack)->alternative_matchingpath = LABEL();
/* Checking zero-length iteration. */
if (opcode != OP_ONCE)
{
CMPTO(SLJIT_NOT_EQUAL, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STR_PTR, 0, rmax_label);
/* Drop STR_PTR for greedy plus quantifier. */
if (bra != OP_BRAZERO)
free_stack(common, 1);
}
else
/* TMP2 must contain the starting STR_PTR. */
CMPTO(SLJIT_NOT_EQUAL, TMP2, 0, STR_PTR, 0, rmax_label);
}
else
JUMPTO(SLJIT_JUMP, rmax_label);
BACKTRACK_AS(bracket_backtrack)->recursive_matchingpath = LABEL();
}
if (repeat_type == OP_EXACT)
{
count_match(common);
OP2(SLJIT_SUB | SLJIT_SET_Z, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, rmax_label);
}
else if (repeat_type == OP_UPTO)
{
/* We need to preserve the counter. */
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), repeat_ptr);
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP2, 0);
}
if (bra == OP_BRAZERO)
BACKTRACK_AS(bracket_backtrack)->zero_matchingpath = LABEL();
if (bra == OP_BRAMINZERO)
{
/* This is a backtrack path! (From the viewpoint of OP_BRAMINZERO) */
JUMPTO(SLJIT_JUMP, ((braminzero_backtrack *)parent)->matchingpath);
if (braminzero != NULL)
{
JUMPHERE(braminzero);
/* We need to release the end pointer to perform the
backtrack for the zero-length iteration. When
framesize is < 0, OP_ONCE will do the release itself. */
if (opcode == OP_ONCE && BACKTRACK_AS(bracket_backtrack)->u.framesize >= 0)
{
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
}
else if (ket == OP_KETRMIN && opcode != OP_ONCE)
free_stack(common, 1);
}
/* Continue to the normal backtrack. */
}
if ((ket != OP_KET && bra != OP_BRAMINZERO) || bra == OP_BRAZERO)
count_match(common);
/* Skip the other alternatives. */
while (*cc == OP_ALT)
cc += GET(cc, 1);
cc += 1 + LINK_SIZE;
if (opcode == OP_ONCE)
{
/* We temporarily encode the needs_control_head in the lowest bit.
Note: on the target architectures of SLJIT the ((x << 1) >> 1) returns
the same value for small signed numbers (including negative numbers). */
BACKTRACK_AS(bracket_backtrack)->u.framesize = ((unsigned int)BACKTRACK_AS(bracket_backtrack)->u.framesize << 1) | (needs_control_head ? 1 : 0);
}
return cc + repeat_length;
}
static pcre_uchar *compile_bracketpos_matchingpath(compiler_common *common, pcre_uchar *cc, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
pcre_uchar opcode;
int private_data_ptr;
int cbraprivptr = 0;
BOOL needs_control_head;
int framesize;
int stacksize;
int offset = 0;
BOOL zero = FALSE;
pcre_uchar *ccbegin = NULL;
int stack; /* Also contains the offset of control head. */
struct sljit_label *loop = NULL;
struct jump_list *emptymatch = NULL;
PUSH_BACKTRACK(sizeof(bracketpos_backtrack), cc, NULL);
if (*cc == OP_BRAPOSZERO)
{
zero = TRUE;
cc++;
}
opcode = *cc;
private_data_ptr = PRIVATE_DATA(cc);
SLJIT_ASSERT(private_data_ptr != 0);
BACKTRACK_AS(bracketpos_backtrack)->private_data_ptr = private_data_ptr;
switch(opcode)
{
case OP_BRAPOS:
case OP_SBRAPOS:
ccbegin = cc + 1 + LINK_SIZE;
break;
case OP_CBRAPOS:
case OP_SCBRAPOS:
offset = GET2(cc, 1 + LINK_SIZE);
/* This case cannot be optimized in the same was as
normal capturing brackets. */
SLJIT_ASSERT(common->optimized_cbracket[offset] == 0);
cbraprivptr = OVECTOR_PRIV(offset);
offset <<= 1;
ccbegin = cc + 1 + LINK_SIZE + IMM2_SIZE;
break;
default:
SLJIT_UNREACHABLE();
break;
}
framesize = get_framesize(common, cc, NULL, FALSE, &needs_control_head);
BACKTRACK_AS(bracketpos_backtrack)->framesize = framesize;
if (framesize < 0)
{
if (offset != 0)
{
stacksize = 2;
if (common->capture_last_ptr != 0)
stacksize++;
}
else
stacksize = 1;
if (needs_control_head)
stacksize++;
if (!zero)
stacksize++;
BACKTRACK_AS(bracketpos_backtrack)->stacksize = stacksize;
allocate_stack(common, stacksize);
if (framesize == no_frame)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STACK_TOP, 0);
stack = 0;
if (offset != 0)
{
stack = 2;
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP1, 0);
if (common->capture_last_ptr != 0)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), TMP2, 0);
if (needs_control_head)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
if (common->capture_last_ptr != 0)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(2), TMP1, 0);
stack = 3;
}
}
else
{
if (needs_control_head)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
stack = 1;
}
if (needs_control_head)
stack++;
if (!zero)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stack), SLJIT_IMM, 1);
if (needs_control_head)
{
stack--;
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stack), TMP2, 0);
}
}
else
{
stacksize = framesize + 1;
if (!zero)
stacksize++;
if (needs_control_head)
stacksize++;
if (offset == 0)
stacksize++;
BACKTRACK_AS(bracketpos_backtrack)->stacksize = stacksize;
allocate_stack(common, stacksize);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
if (needs_control_head)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
OP2(SLJIT_ADD, SLJIT_MEM1(SLJIT_SP), private_data_ptr, STACK_TOP, 0, SLJIT_IMM, stacksize * sizeof(sljit_sw));
stack = 0;
if (!zero)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 1);
stack = 1;
}
if (needs_control_head)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stack), TMP2, 0);
stack++;
}
if (offset == 0)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stack), STR_PTR, 0);
stack++;
}
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stack), TMP1, 0);
init_frame(common, cc, NULL, stacksize - 1, stacksize - framesize, FALSE);
stack -= 1 + (offset == 0);
}
if (offset != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), cbraprivptr, STR_PTR, 0);
loop = LABEL();
while (*cc != OP_KETRPOS)
{
backtrack->top = NULL;
backtrack->topbacktracks = NULL;
cc += GET(cc, 1);
compile_matchingpath(common, ccbegin, cc, backtrack);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return NULL;
if (framesize < 0)
{
if (framesize == no_frame)
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
if (offset != 0)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), cbraprivptr);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), cbraprivptr, STR_PTR, 0);
if (common->capture_last_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr, SLJIT_IMM, offset >> 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0);
}
else
{
if (opcode == OP_SBRAPOS)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
}
/* Even if the match is empty, we need to reset the control head. */
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(stack));
if (opcode == OP_SBRAPOS || opcode == OP_SCBRAPOS)
add_jump(compiler, &emptymatch, CMP(SLJIT_EQUAL, TMP1, 0, STR_PTR, 0));
if (!zero)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize - 1), SLJIT_IMM, 0);
}
else
{
if (offset != 0)
{
OP2(SLJIT_SUB, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_IMM, stacksize * sizeof(sljit_sw));
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), cbraprivptr);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), cbraprivptr, STR_PTR, 0);
if (common->capture_last_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr, SLJIT_IMM, offset >> 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0);
}
else
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
OP2(SLJIT_SUB, STACK_TOP, 0, TMP2, 0, SLJIT_IMM, stacksize * sizeof(sljit_sw));
if (opcode == OP_SBRAPOS)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(TMP2), STACK(-framesize - 2));
OP1(SLJIT_MOV, SLJIT_MEM1(TMP2), STACK(-framesize - 2), STR_PTR, 0);
}
/* Even if the match is empty, we need to reset the control head. */
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_MEM1(STACK_TOP), STACK(stack));
if (opcode == OP_SBRAPOS || opcode == OP_SCBRAPOS)
add_jump(compiler, &emptymatch, CMP(SLJIT_EQUAL, TMP1, 0, STR_PTR, 0));
if (!zero)
{
if (framesize < 0)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize - 1), SLJIT_IMM, 0);
else
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
}
}
JUMPTO(SLJIT_JUMP, loop);
flush_stubs(common);
compile_backtrackingpath(common, backtrack->top);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return NULL;
set_jumps(backtrack->topbacktracks, LABEL());
if (framesize < 0)
{
if (offset != 0)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), cbraprivptr);
else
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
}
else
{
if (offset != 0)
{
/* Last alternative. */
if (*cc == OP_KETRPOS)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), cbraprivptr);
}
else
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(TMP2), STACK(-framesize - 2));
}
}
if (*cc == OP_KETRPOS)
break;
ccbegin = cc + 1 + LINK_SIZE;
}
/* We don't have to restore the control head in case of a failed match. */
backtrack->topbacktracks = NULL;
if (!zero)
{
if (framesize < 0)
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_NOT_EQUAL, SLJIT_MEM1(STACK_TOP), STACK(stacksize - 1), SLJIT_IMM, 0));
else /* TMP2 is set to [private_data_ptr] above. */
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_NOT_EQUAL, SLJIT_MEM1(TMP2), STACK(-stacksize), SLJIT_IMM, 0));
}
/* None of them matched. */
set_jumps(emptymatch, LABEL());
count_match(common);
return cc + 1 + LINK_SIZE;
}
static SLJIT_INLINE pcre_uchar *get_iterator_parameters(compiler_common *common, pcre_uchar *cc, pcre_uchar *opcode, pcre_uchar *type, sljit_u32 *max, sljit_u32 *exact, pcre_uchar **end)
{
int class_len;
*opcode = *cc;
*exact = 0;
if (*opcode >= OP_STAR && *opcode <= OP_POSUPTO)
{
cc++;
*type = OP_CHAR;
}
else if (*opcode >= OP_STARI && *opcode <= OP_POSUPTOI)
{
cc++;
*type = OP_CHARI;
*opcode -= OP_STARI - OP_STAR;
}
else if (*opcode >= OP_NOTSTAR && *opcode <= OP_NOTPOSUPTO)
{
cc++;
*type = OP_NOT;
*opcode -= OP_NOTSTAR - OP_STAR;
}
else if (*opcode >= OP_NOTSTARI && *opcode <= OP_NOTPOSUPTOI)
{
cc++;
*type = OP_NOTI;
*opcode -= OP_NOTSTARI - OP_STAR;
}
else if (*opcode >= OP_TYPESTAR && *opcode <= OP_TYPEPOSUPTO)
{
cc++;
*opcode -= OP_TYPESTAR - OP_STAR;
*type = OP_END;
}
else
{
SLJIT_ASSERT(*opcode == OP_CLASS || *opcode == OP_NCLASS || *opcode == OP_XCLASS);
*type = *opcode;
cc++;
class_len = (*type < OP_XCLASS) ? (int)(1 + (32 / sizeof(pcre_uchar))) : GET(cc, 0);
*opcode = cc[class_len - 1];
if (*opcode >= OP_CRSTAR && *opcode <= OP_CRMINQUERY)
{
*opcode -= OP_CRSTAR - OP_STAR;
*end = cc + class_len;
if (*opcode == OP_PLUS || *opcode == OP_MINPLUS)
{
*exact = 1;
*opcode -= OP_PLUS - OP_STAR;
}
}
else if (*opcode >= OP_CRPOSSTAR && *opcode <= OP_CRPOSQUERY)
{
*opcode -= OP_CRPOSSTAR - OP_POSSTAR;
*end = cc + class_len;
if (*opcode == OP_POSPLUS)
{
*exact = 1;
*opcode = OP_POSSTAR;
}
}
else
{
SLJIT_ASSERT(*opcode == OP_CRRANGE || *opcode == OP_CRMINRANGE || *opcode == OP_CRPOSRANGE);
*max = GET2(cc, (class_len + IMM2_SIZE));
*exact = GET2(cc, class_len);
if (*max == 0)
{
if (*opcode == OP_CRPOSRANGE)
*opcode = OP_POSSTAR;
else
*opcode -= OP_CRRANGE - OP_STAR;
}
else
{
*max -= *exact;
if (*max == 0)
*opcode = OP_EXACT;
else if (*max == 1)
{
if (*opcode == OP_CRPOSRANGE)
*opcode = OP_POSQUERY;
else
*opcode -= OP_CRRANGE - OP_QUERY;
}
else
{
if (*opcode == OP_CRPOSRANGE)
*opcode = OP_POSUPTO;
else
*opcode -= OP_CRRANGE - OP_UPTO;
}
}
*end = cc + class_len + 2 * IMM2_SIZE;
}
return cc;
}
switch(*opcode)
{
case OP_EXACT:
*exact = GET2(cc, 0);
cc += IMM2_SIZE;
break;
case OP_PLUS:
case OP_MINPLUS:
*exact = 1;
*opcode -= OP_PLUS - OP_STAR;
break;
case OP_POSPLUS:
*exact = 1;
*opcode = OP_POSSTAR;
break;
case OP_UPTO:
case OP_MINUPTO:
case OP_POSUPTO:
*max = GET2(cc, 0);
cc += IMM2_SIZE;
break;
}
if (*type == OP_END)
{
*type = *cc;
*end = next_opcode(common, cc);
cc++;
return cc;
}
*end = cc + 1;
#ifdef SUPPORT_UTF
if (common->utf && HAS_EXTRALEN(*cc)) *end += GET_EXTRALEN(*cc);
#endif
return cc;
}
static pcre_uchar *compile_iterator_matchingpath(compiler_common *common, pcre_uchar *cc, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
pcre_uchar opcode;
pcre_uchar type;
sljit_u32 max = 0, exact;
BOOL fast_fail;
sljit_s32 fast_str_ptr;
BOOL charpos_enabled;
pcre_uchar charpos_char;
unsigned int charpos_othercasebit;
pcre_uchar *end;
jump_list *no_match = NULL;
jump_list *no_char1_match = NULL;
struct sljit_jump *jump = NULL;
struct sljit_label *label;
int private_data_ptr = PRIVATE_DATA(cc);
int base = (private_data_ptr == 0) ? SLJIT_MEM1(STACK_TOP) : SLJIT_MEM1(SLJIT_SP);
int offset0 = (private_data_ptr == 0) ? STACK(0) : private_data_ptr;
int offset1 = (private_data_ptr == 0) ? STACK(1) : private_data_ptr + (int)sizeof(sljit_sw);
int tmp_base, tmp_offset;
PUSH_BACKTRACK(sizeof(char_iterator_backtrack), cc, NULL);
fast_str_ptr = PRIVATE_DATA(cc + 1);
fast_fail = TRUE;
SLJIT_ASSERT(common->fast_forward_bc_ptr == NULL || fast_str_ptr == 0 || cc == common->fast_forward_bc_ptr);
if (cc == common->fast_forward_bc_ptr)
fast_fail = FALSE;
else if (common->fast_fail_start_ptr == 0)
fast_str_ptr = 0;
SLJIT_ASSERT(common->fast_forward_bc_ptr != NULL || fast_str_ptr == 0
|| (fast_str_ptr >= common->fast_fail_start_ptr && fast_str_ptr <= common->fast_fail_end_ptr));
cc = get_iterator_parameters(common, cc, &opcode, &type, &max, &exact, &end);
if (type != OP_EXTUNI)
{
tmp_base = TMP3;
tmp_offset = 0;
}
else
{
tmp_base = SLJIT_MEM1(SLJIT_SP);
tmp_offset = POSSESSIVE0;
}
if (fast_fail && fast_str_ptr != 0)
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_LESS_EQUAL, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), fast_str_ptr));
/* Handle fixed part first. */
if (exact > 1)
{
SLJIT_ASSERT(fast_str_ptr == 0);
if (common->mode == JIT_COMPILE
#ifdef SUPPORT_UTF
&& !common->utf
#endif
&& type != OP_ANYNL && type != OP_EXTUNI)
{
OP2(SLJIT_ADD, TMP1, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(exact));
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_GREATER, TMP1, 0, STR_END, 0));
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, exact);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, FALSE);
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
}
else
{
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, exact);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, TRUE);
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
}
}
else if (exact == 1)
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, TRUE);
switch(opcode)
{
case OP_STAR:
case OP_UPTO:
SLJIT_ASSERT(fast_str_ptr == 0 || opcode == OP_STAR);
if (type == OP_ANYNL || type == OP_EXTUNI)
{
SLJIT_ASSERT(private_data_ptr == 0);
SLJIT_ASSERT(fast_str_ptr == 0);
allocate_stack(common, 2);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), SLJIT_IMM, 0);
if (opcode == OP_UPTO)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), POSSESSIVE0, SLJIT_IMM, max);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &BACKTRACK_AS(char_iterator_backtrack)->u.backtracks, TRUE);
if (opcode == OP_UPTO)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), POSSESSIVE0);
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
jump = JUMP(SLJIT_ZERO);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), POSSESSIVE0, TMP1, 0);
}
/* We cannot use TMP3 because of this allocate_stack. */
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
JUMPTO(SLJIT_JUMP, label);
if (jump != NULL)
JUMPHERE(jump);
}
else
{
charpos_enabled = FALSE;
charpos_char = 0;
charpos_othercasebit = 0;
if ((type != OP_CHAR && type != OP_CHARI) && (*end == OP_CHAR || *end == OP_CHARI))
{
charpos_enabled = TRUE;
#ifdef SUPPORT_UTF
charpos_enabled = !common->utf || !HAS_EXTRALEN(end[1]);
#endif
if (charpos_enabled && *end == OP_CHARI && char_has_othercase(common, end + 1))
{
charpos_othercasebit = char_get_othercase_bit(common, end + 1);
if (charpos_othercasebit == 0)
charpos_enabled = FALSE;
}
if (charpos_enabled)
{
charpos_char = end[1];
/* Consumpe the OP_CHAR opcode. */
end += 2;
#if defined COMPILE_PCRE8
SLJIT_ASSERT((charpos_othercasebit >> 8) == 0);
#elif defined COMPILE_PCRE16 || defined COMPILE_PCRE32
SLJIT_ASSERT((charpos_othercasebit >> 9) == 0);
if ((charpos_othercasebit & 0x100) != 0)
charpos_othercasebit = (charpos_othercasebit & 0xff) << 8;
#endif
if (charpos_othercasebit != 0)
charpos_char |= charpos_othercasebit;
BACKTRACK_AS(char_iterator_backtrack)->u.charpos.enabled = TRUE;
BACKTRACK_AS(char_iterator_backtrack)->u.charpos.chr = charpos_char;
BACKTRACK_AS(char_iterator_backtrack)->u.charpos.othercasebit = charpos_othercasebit;
}
}
if (charpos_enabled)
{
if (opcode == OP_UPTO)
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, max + 1);
/* Search the first instance of charpos_char. */
jump = JUMP(SLJIT_JUMP);
label = LABEL();
if (opcode == OP_UPTO)
{
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
add_jump(compiler, &backtrack->topbacktracks, JUMP(SLJIT_ZERO));
}
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, FALSE);
if (fast_str_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), fast_str_ptr, STR_PTR, 0);
JUMPHERE(jump);
detect_partial_match(common, &backtrack->topbacktracks);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
if (charpos_othercasebit != 0)
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, charpos_othercasebit);
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, charpos_char, label);
if (private_data_ptr == 0)
allocate_stack(common, 2);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
OP1(SLJIT_MOV, base, offset1, STR_PTR, 0);
if (opcode == OP_UPTO)
{
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
add_jump(compiler, &no_match, JUMP(SLJIT_ZERO));
}
/* Search the last instance of charpos_char. */
label = LABEL();
compile_char1_matchingpath(common, type, cc, &no_match, FALSE);
if (fast_str_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), fast_str_ptr, STR_PTR, 0);
detect_partial_match(common, &no_match);
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(0));
if (charpos_othercasebit != 0)
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, charpos_othercasebit);
if (opcode == OP_STAR)
{
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, charpos_char, label);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
}
else
{
jump = CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, charpos_char);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
JUMPHERE(jump);
}
if (opcode == OP_UPTO)
{
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
}
else
JUMPTO(SLJIT_JUMP, label);
set_jumps(no_match, LABEL());
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
}
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
else if (common->utf)
{
if (private_data_ptr == 0)
allocate_stack(common, 2);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
OP1(SLJIT_MOV, base, offset1, STR_PTR, 0);
if (opcode == OP_UPTO)
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, max);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &no_match, TRUE);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
if (opcode == OP_UPTO)
{
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
}
else
JUMPTO(SLJIT_JUMP, label);
set_jumps(no_match, LABEL());
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
if (fast_str_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), fast_str_ptr, STR_PTR, 0);
}
#endif
else
{
if (private_data_ptr == 0)
allocate_stack(common, 2);
OP1(SLJIT_MOV, base, offset1, STR_PTR, 0);
if (opcode == OP_UPTO)
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, max);
label = LABEL();
detect_partial_match(common, &no_match);
compile_char1_matchingpath(common, type, cc, &no_char1_match, FALSE);
if (opcode == OP_UPTO)
{
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
}
else
JUMPTO(SLJIT_JUMP, label);
set_jumps(no_char1_match, LABEL());
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
set_jumps(no_match, LABEL());
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
if (fast_str_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), fast_str_ptr, STR_PTR, 0);
}
}
BACKTRACK_AS(char_iterator_backtrack)->matchingpath = LABEL();
break;
case OP_MINSTAR:
if (private_data_ptr == 0)
allocate_stack(common, 1);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
BACKTRACK_AS(char_iterator_backtrack)->matchingpath = LABEL();
if (fast_str_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), fast_str_ptr, STR_PTR, 0);
break;
case OP_MINUPTO:
SLJIT_ASSERT(fast_str_ptr == 0);
if (private_data_ptr == 0)
allocate_stack(common, 2);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
OP1(SLJIT_MOV, base, offset1, SLJIT_IMM, max + 1);
BACKTRACK_AS(char_iterator_backtrack)->matchingpath = LABEL();
break;
case OP_QUERY:
case OP_MINQUERY:
SLJIT_ASSERT(fast_str_ptr == 0);
if (private_data_ptr == 0)
allocate_stack(common, 1);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
if (opcode == OP_QUERY)
compile_char1_matchingpath(common, type, cc, &BACKTRACK_AS(char_iterator_backtrack)->u.backtracks, TRUE);
BACKTRACK_AS(char_iterator_backtrack)->matchingpath = LABEL();
break;
case OP_EXACT:
break;
case OP_POSSTAR:
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf)
{
OP1(SLJIT_MOV, tmp_base, tmp_offset, STR_PTR, 0);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &no_match, TRUE);
OP1(SLJIT_MOV, tmp_base, tmp_offset, STR_PTR, 0);
JUMPTO(SLJIT_JUMP, label);
set_jumps(no_match, LABEL());
OP1(SLJIT_MOV, STR_PTR, 0, tmp_base, tmp_offset);
if (fast_str_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), fast_str_ptr, STR_PTR, 0);
break;
}
#endif
label = LABEL();
detect_partial_match(common, &no_match);
compile_char1_matchingpath(common, type, cc, &no_char1_match, FALSE);
JUMPTO(SLJIT_JUMP, label);
set_jumps(no_char1_match, LABEL());
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
set_jumps(no_match, LABEL());
if (fast_str_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), fast_str_ptr, STR_PTR, 0);
break;
case OP_POSUPTO:
SLJIT_ASSERT(fast_str_ptr == 0);
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (common->utf)
{
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), POSSESSIVE1, STR_PTR, 0);
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, max);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &no_match, TRUE);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), POSSESSIVE1, STR_PTR, 0);
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
set_jumps(no_match, LABEL());
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), POSSESSIVE1);
break;
}
#endif
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, max);
label = LABEL();
detect_partial_match(common, &no_match);
compile_char1_matchingpath(common, type, cc, &no_char1_match, FALSE);
OP2(SLJIT_SUB | SLJIT_SET_Z, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
OP2(SLJIT_ADD, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
set_jumps(no_char1_match, LABEL());
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
set_jumps(no_match, LABEL());
break;
case OP_POSQUERY:
SLJIT_ASSERT(fast_str_ptr == 0);
OP1(SLJIT_MOV, tmp_base, tmp_offset, STR_PTR, 0);
compile_char1_matchingpath(common, type, cc, &no_match, TRUE);
OP1(SLJIT_MOV, tmp_base, tmp_offset, STR_PTR, 0);
set_jumps(no_match, LABEL());
OP1(SLJIT_MOV, STR_PTR, 0, tmp_base, tmp_offset);
break;
default:
SLJIT_UNREACHABLE();
break;
}
count_match(common);
return end;
}
static SLJIT_INLINE pcre_uchar *compile_fail_accept_matchingpath(compiler_common *common, pcre_uchar *cc, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
PUSH_BACKTRACK(sizeof(backtrack_common), cc, NULL);
if (*cc == OP_FAIL)
{
add_jump(compiler, &backtrack->topbacktracks, JUMP(SLJIT_JUMP));
return cc + 1;
}
if (*cc == OP_ASSERT_ACCEPT || common->currententry != NULL || !common->might_be_empty)
{
/* No need to check notempty conditions. */
if (common->accept_label == NULL)
add_jump(compiler, &common->accept, JUMP(SLJIT_JUMP));
else
JUMPTO(SLJIT_JUMP, common->accept_label);
return cc + 1;
}
if (common->accept_label == NULL)
add_jump(compiler, &common->accept, CMP(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(0)));
else
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), common->accept_label);
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, notempty));
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, 0));
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, notempty_atstart));
if (common->accept_label == NULL)
add_jump(compiler, &common->accept, CMP(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, 0));
else
CMPTO(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, 0, common->accept_label);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, str));
if (common->accept_label == NULL)
add_jump(compiler, &common->accept, CMP(SLJIT_NOT_EQUAL, TMP2, 0, STR_PTR, 0));
else
CMPTO(SLJIT_NOT_EQUAL, TMP2, 0, STR_PTR, 0, common->accept_label);
add_jump(compiler, &backtrack->topbacktracks, JUMP(SLJIT_JUMP));
return cc + 1;
}
static SLJIT_INLINE pcre_uchar *compile_close_matchingpath(compiler_common *common, pcre_uchar *cc)
{
DEFINE_COMPILER;
int offset = GET2(cc, 1);
BOOL optimized_cbracket = common->optimized_cbracket[offset] != 0;
/* Data will be discarded anyway... */
if (common->currententry != NULL)
return cc + 1 + IMM2_SIZE;
if (!optimized_cbracket)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR_PRIV(offset));
offset <<= 1;
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), STR_PTR, 0);
if (!optimized_cbracket)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0);
return cc + 1 + IMM2_SIZE;
}
static SLJIT_INLINE pcre_uchar *compile_control_verb_matchingpath(compiler_common *common, pcre_uchar *cc, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
pcre_uchar opcode = *cc;
pcre_uchar *ccend = cc + 1;
if (opcode == OP_PRUNE_ARG || opcode == OP_SKIP_ARG || opcode == OP_THEN_ARG)
ccend += 2 + cc[1];
PUSH_BACKTRACK(sizeof(backtrack_common), cc, NULL);
if (opcode == OP_SKIP)
{
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
return ccend;
}
if (opcode == OP_PRUNE_ARG || opcode == OP_THEN_ARG)
{
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, (sljit_sw)(cc + 2));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->mark_ptr, TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, mark_ptr), TMP2, 0);
}
return ccend;
}
static pcre_uchar then_trap_opcode[1] = { OP_THEN_TRAP };
static SLJIT_INLINE void compile_then_trap_matchingpath(compiler_common *common, pcre_uchar *cc, pcre_uchar *ccend, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
BOOL needs_control_head;
int size;
PUSH_BACKTRACK_NOVALUE(sizeof(then_trap_backtrack), cc);
common->then_trap = BACKTRACK_AS(then_trap_backtrack);
BACKTRACK_AS(then_trap_backtrack)->common.cc = then_trap_opcode;
BACKTRACK_AS(then_trap_backtrack)->start = (sljit_sw)(cc - common->start);
BACKTRACK_AS(then_trap_backtrack)->framesize = get_framesize(common, cc, ccend, FALSE, &needs_control_head);
size = BACKTRACK_AS(then_trap_backtrack)->framesize;
size = 3 + (size < 0 ? 0 : size);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
allocate_stack(common, size);
if (size > 3)
OP2(SLJIT_ADD, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, STACK_TOP, 0, SLJIT_IMM, (size - 3) * sizeof(sljit_sw));
else
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, STACK_TOP, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(size - 1), SLJIT_IMM, BACKTRACK_AS(then_trap_backtrack)->start);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(size - 2), SLJIT_IMM, type_then_trap);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(size - 3), TMP2, 0);
size = BACKTRACK_AS(then_trap_backtrack)->framesize;
if (size >= 0)
init_frame(common, cc, ccend, size - 1, 0, FALSE);
}
static void compile_matchingpath(compiler_common *common, pcre_uchar *cc, pcre_uchar *ccend, backtrack_common *parent)
{
DEFINE_COMPILER;
backtrack_common *backtrack;
BOOL has_then_trap = FALSE;
then_trap_backtrack *save_then_trap = NULL;
SLJIT_ASSERT(*ccend == OP_END || (*ccend >= OP_ALT && *ccend <= OP_KETRPOS));
if (common->has_then && common->then_offsets[cc - common->start] != 0)
{
SLJIT_ASSERT(*ccend != OP_END && common->control_head_ptr != 0);
has_then_trap = TRUE;
save_then_trap = common->then_trap;
/* Tail item on backtrack. */
compile_then_trap_matchingpath(common, cc, ccend, parent);
}
while (cc < ccend)
{
switch(*cc)
{
case OP_SOD:
case OP_SOM:
case OP_NOT_WORD_BOUNDARY:
case OP_WORD_BOUNDARY:
case OP_EODN:
case OP_EOD:
case OP_DOLL:
case OP_DOLLM:
case OP_CIRC:
case OP_CIRCM:
case OP_REVERSE:
cc = compile_simple_assertion_matchingpath(common, *cc, cc + 1, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks);
break;
case OP_NOT_DIGIT:
case OP_DIGIT:
case OP_NOT_WHITESPACE:
case OP_WHITESPACE:
case OP_NOT_WORDCHAR:
case OP_WORDCHAR:
case OP_ANY:
case OP_ALLANY:
case OP_ANYBYTE:
case OP_NOTPROP:
case OP_PROP:
case OP_ANYNL:
case OP_NOT_HSPACE:
case OP_HSPACE:
case OP_NOT_VSPACE:
case OP_VSPACE:
case OP_EXTUNI:
case OP_NOT:
case OP_NOTI:
cc = compile_char1_matchingpath(common, *cc, cc + 1, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks, TRUE);
break;
case OP_SET_SOM:
PUSH_BACKTRACK_NOVALUE(sizeof(backtrack_common), cc);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(0));
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP2, 0);
cc++;
break;
case OP_CHAR:
case OP_CHARI:
if (common->mode == JIT_COMPILE)
cc = compile_charn_matchingpath(common, cc, ccend, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks);
else
cc = compile_char1_matchingpath(common, *cc, cc + 1, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks, TRUE);
break;
case OP_STAR:
case OP_MINSTAR:
case OP_PLUS:
case OP_MINPLUS:
case OP_QUERY:
case OP_MINQUERY:
case OP_UPTO:
case OP_MINUPTO:
case OP_EXACT:
case OP_POSSTAR:
case OP_POSPLUS:
case OP_POSQUERY:
case OP_POSUPTO:
case OP_STARI:
case OP_MINSTARI:
case OP_PLUSI:
case OP_MINPLUSI:
case OP_QUERYI:
case OP_MINQUERYI:
case OP_UPTOI:
case OP_MINUPTOI:
case OP_EXACTI:
case OP_POSSTARI:
case OP_POSPLUSI:
case OP_POSQUERYI:
case OP_POSUPTOI:
case OP_NOTSTAR:
case OP_NOTMINSTAR:
case OP_NOTPLUS:
case OP_NOTMINPLUS:
case OP_NOTQUERY:
case OP_NOTMINQUERY:
case OP_NOTUPTO:
case OP_NOTMINUPTO:
case OP_NOTEXACT:
case OP_NOTPOSSTAR:
case OP_NOTPOSPLUS:
case OP_NOTPOSQUERY:
case OP_NOTPOSUPTO:
case OP_NOTSTARI:
case OP_NOTMINSTARI:
case OP_NOTPLUSI:
case OP_NOTMINPLUSI:
case OP_NOTQUERYI:
case OP_NOTMINQUERYI:
case OP_NOTUPTOI:
case OP_NOTMINUPTOI:
case OP_NOTEXACTI:
case OP_NOTPOSSTARI:
case OP_NOTPOSPLUSI:
case OP_NOTPOSQUERYI:
case OP_NOTPOSUPTOI:
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
case OP_TYPEEXACT:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSPLUS:
case OP_TYPEPOSQUERY:
case OP_TYPEPOSUPTO:
cc = compile_iterator_matchingpath(common, cc, parent);
break;
case OP_CLASS:
case OP_NCLASS:
if (cc[1 + (32 / sizeof(pcre_uchar))] >= OP_CRSTAR && cc[1 + (32 / sizeof(pcre_uchar))] <= OP_CRPOSRANGE)
cc = compile_iterator_matchingpath(common, cc, parent);
else
cc = compile_char1_matchingpath(common, *cc, cc + 1, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks, TRUE);
break;
#if defined SUPPORT_UTF || defined COMPILE_PCRE16 || defined COMPILE_PCRE32
case OP_XCLASS:
if (*(cc + GET(cc, 1)) >= OP_CRSTAR && *(cc + GET(cc, 1)) <= OP_CRPOSRANGE)
cc = compile_iterator_matchingpath(common, cc, parent);
else
cc = compile_char1_matchingpath(common, *cc, cc + 1, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks, TRUE);
break;
#endif
case OP_REF:
case OP_REFI:
if (cc[1 + IMM2_SIZE] >= OP_CRSTAR && cc[1 + IMM2_SIZE] <= OP_CRPOSRANGE)
cc = compile_ref_iterator_matchingpath(common, cc, parent);
else
{
compile_ref_matchingpath(common, cc, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks, TRUE, FALSE);
cc += 1 + IMM2_SIZE;
}
break;
case OP_DNREF:
case OP_DNREFI:
if (cc[1 + 2 * IMM2_SIZE] >= OP_CRSTAR && cc[1 + 2 * IMM2_SIZE] <= OP_CRPOSRANGE)
cc = compile_ref_iterator_matchingpath(common, cc, parent);
else
{
compile_dnref_search(common, cc, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks);
compile_ref_matchingpath(common, cc, parent->top != NULL ? &parent->top->nextbacktracks : &parent->topbacktracks, TRUE, FALSE);
cc += 1 + 2 * IMM2_SIZE;
}
break;
case OP_RECURSE:
cc = compile_recurse_matchingpath(common, cc, parent);
break;
case OP_CALLOUT:
cc = compile_callout_matchingpath(common, cc, parent);
break;
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
PUSH_BACKTRACK_NOVALUE(sizeof(assert_backtrack), cc);
cc = compile_assert_matchingpath(common, cc, BACKTRACK_AS(assert_backtrack), FALSE);
break;
case OP_BRAMINZERO:
PUSH_BACKTRACK_NOVALUE(sizeof(braminzero_backtrack), cc);
cc = bracketend(cc + 1);
if (*(cc - 1 - LINK_SIZE) != OP_KETRMIN)
{
allocate_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
}
else
{
allocate_stack(common, 2);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), STR_PTR, 0);
}
BACKTRACK_AS(braminzero_backtrack)->matchingpath = LABEL();
count_match(common);
break;
case OP_ONCE:
case OP_ONCE_NC:
case OP_BRA:
case OP_CBRA:
case OP_COND:
case OP_SBRA:
case OP_SCBRA:
case OP_SCOND:
cc = compile_bracket_matchingpath(common, cc, parent);
break;
case OP_BRAZERO:
if (cc[1] > OP_ASSERTBACK_NOT)
cc = compile_bracket_matchingpath(common, cc, parent);
else
{
PUSH_BACKTRACK_NOVALUE(sizeof(assert_backtrack), cc);
cc = compile_assert_matchingpath(common, cc, BACKTRACK_AS(assert_backtrack), FALSE);
}
break;
case OP_BRAPOS:
case OP_CBRAPOS:
case OP_SBRAPOS:
case OP_SCBRAPOS:
case OP_BRAPOSZERO:
cc = compile_bracketpos_matchingpath(common, cc, parent);
break;
case OP_MARK:
PUSH_BACKTRACK_NOVALUE(sizeof(backtrack_common), cc);
SLJIT_ASSERT(common->mark_ptr != 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), common->mark_ptr);
allocate_stack(common, common->has_skip_arg ? 5 : 1);
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(common->has_skip_arg ? 4 : 0), TMP2, 0);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, (sljit_sw)(cc + 2));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->mark_ptr, TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, mark_ptr), TMP2, 0);
if (common->has_skip_arg)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, STACK_TOP, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(1), SLJIT_IMM, type_mark);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(2), SLJIT_IMM, (sljit_sw)(cc + 2));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(3), STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), TMP1, 0);
}
cc += 1 + 2 + cc[1];
break;
case OP_PRUNE:
case OP_PRUNE_ARG:
case OP_SKIP:
case OP_SKIP_ARG:
case OP_THEN:
case OP_THEN_ARG:
case OP_COMMIT:
cc = compile_control_verb_matchingpath(common, cc, parent);
break;
case OP_FAIL:
case OP_ACCEPT:
case OP_ASSERT_ACCEPT:
cc = compile_fail_accept_matchingpath(common, cc, parent);
break;
case OP_CLOSE:
cc = compile_close_matchingpath(common, cc);
break;
case OP_SKIPZERO:
cc = bracketend(cc + 1);
break;
default:
SLJIT_UNREACHABLE();
return;
}
if (cc == NULL)
return;
}
if (has_then_trap)
{
/* Head item on backtrack. */
PUSH_BACKTRACK_NOVALUE(sizeof(then_trap_backtrack), cc);
BACKTRACK_AS(then_trap_backtrack)->common.cc = then_trap_opcode;
BACKTRACK_AS(then_trap_backtrack)->then_trap = common->then_trap;
common->then_trap = save_then_trap;
}
SLJIT_ASSERT(cc == ccend);
}
#undef PUSH_BACKTRACK
#undef PUSH_BACKTRACK_NOVALUE
#undef BACKTRACK_AS
#define COMPILE_BACKTRACKINGPATH(current) \
do \
{ \
compile_backtrackingpath(common, (current)); \
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler))) \
return; \
} \
while (0)
#define CURRENT_AS(type) ((type *)current)
static void compile_iterator_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
pcre_uchar *cc = current->cc;
pcre_uchar opcode;
pcre_uchar type;
sljit_u32 max = 0, exact;
struct sljit_label *label = NULL;
struct sljit_jump *jump = NULL;
jump_list *jumplist = NULL;
pcre_uchar *end;
int private_data_ptr = PRIVATE_DATA(cc);
int base = (private_data_ptr == 0) ? SLJIT_MEM1(STACK_TOP) : SLJIT_MEM1(SLJIT_SP);
int offset0 = (private_data_ptr == 0) ? STACK(0) : private_data_ptr;
int offset1 = (private_data_ptr == 0) ? STACK(1) : private_data_ptr + (int)sizeof(sljit_sw);
cc = get_iterator_parameters(common, cc, &opcode, &type, &max, &exact, &end);
switch(opcode)
{
case OP_STAR:
case OP_UPTO:
if (type == OP_ANYNL || type == OP_EXTUNI)
{
SLJIT_ASSERT(private_data_ptr == 0);
set_jumps(CURRENT_AS(char_iterator_backtrack)->u.backtracks, LABEL());
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0, CURRENT_AS(char_iterator_backtrack)->matchingpath);
}
else
{
if (CURRENT_AS(char_iterator_backtrack)->u.charpos.enabled)
{
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
OP1(SLJIT_MOV, TMP2, 0, base, offset1);
OP2(SLJIT_SUB, STR_PTR, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(1));
jump = CMP(SLJIT_LESS_EQUAL, STR_PTR, 0, TMP2, 0);
label = LABEL();
OP1(MOV_UCHAR, TMP1, 0, SLJIT_MEM1(STR_PTR), IN_UCHARS(-1));
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
if (CURRENT_AS(char_iterator_backtrack)->u.charpos.othercasebit != 0)
OP2(SLJIT_OR, TMP1, 0, TMP1, 0, SLJIT_IMM, CURRENT_AS(char_iterator_backtrack)->u.charpos.othercasebit);
CMPTO(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, CURRENT_AS(char_iterator_backtrack)->u.charpos.chr, CURRENT_AS(char_iterator_backtrack)->matchingpath);
skip_char_back(common);
CMPTO(SLJIT_GREATER, STR_PTR, 0, TMP2, 0, label);
}
else
{
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
jump = CMP(SLJIT_LESS_EQUAL, STR_PTR, 0, base, offset1);
skip_char_back(common);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
JUMPTO(SLJIT_JUMP, CURRENT_AS(char_iterator_backtrack)->matchingpath);
}
JUMPHERE(jump);
if (private_data_ptr == 0)
free_stack(common, 2);
}
break;
case OP_MINSTAR:
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
compile_char1_matchingpath(common, type, cc, &jumplist, TRUE);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
JUMPTO(SLJIT_JUMP, CURRENT_AS(char_iterator_backtrack)->matchingpath);
set_jumps(jumplist, LABEL());
if (private_data_ptr == 0)
free_stack(common, 1);
break;
case OP_MINUPTO:
OP1(SLJIT_MOV, TMP1, 0, base, offset1);
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
OP2(SLJIT_SUB | SLJIT_SET_Z, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
add_jump(compiler, &jumplist, JUMP(SLJIT_ZERO));
OP1(SLJIT_MOV, base, offset1, TMP1, 0);
compile_char1_matchingpath(common, type, cc, &jumplist, TRUE);
OP1(SLJIT_MOV, base, offset0, STR_PTR, 0);
JUMPTO(SLJIT_JUMP, CURRENT_AS(char_iterator_backtrack)->matchingpath);
set_jumps(jumplist, LABEL());
if (private_data_ptr == 0)
free_stack(common, 2);
break;
case OP_QUERY:
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
OP1(SLJIT_MOV, base, offset0, SLJIT_IMM, 0);
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0, CURRENT_AS(char_iterator_backtrack)->matchingpath);
jump = JUMP(SLJIT_JUMP);
set_jumps(CURRENT_AS(char_iterator_backtrack)->u.backtracks, LABEL());
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
OP1(SLJIT_MOV, base, offset0, SLJIT_IMM, 0);
JUMPTO(SLJIT_JUMP, CURRENT_AS(char_iterator_backtrack)->matchingpath);
JUMPHERE(jump);
if (private_data_ptr == 0)
free_stack(common, 1);
break;
case OP_MINQUERY:
OP1(SLJIT_MOV, STR_PTR, 0, base, offset0);
OP1(SLJIT_MOV, base, offset0, SLJIT_IMM, 0);
jump = CMP(SLJIT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0);
compile_char1_matchingpath(common, type, cc, &jumplist, TRUE);
JUMPTO(SLJIT_JUMP, CURRENT_AS(char_iterator_backtrack)->matchingpath);
set_jumps(jumplist, LABEL());
JUMPHERE(jump);
if (private_data_ptr == 0)
free_stack(common, 1);
break;
case OP_EXACT:
case OP_POSSTAR:
case OP_POSQUERY:
case OP_POSUPTO:
break;
default:
SLJIT_UNREACHABLE();
break;
}
set_jumps(current->topbacktracks, LABEL());
}
static SLJIT_INLINE void compile_ref_iterator_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
pcre_uchar *cc = current->cc;
BOOL ref = (*cc == OP_REF || *cc == OP_REFI);
pcre_uchar type;
type = cc[ref ? 1 + IMM2_SIZE : 1 + 2 * IMM2_SIZE];
if ((type & 0x1) == 0)
{
/* Maximize case. */
set_jumps(current->topbacktracks, LABEL());
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0, CURRENT_AS(ref_iterator_backtrack)->matchingpath);
return;
}
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0, CURRENT_AS(ref_iterator_backtrack)->matchingpath);
set_jumps(current->topbacktracks, LABEL());
free_stack(common, ref ? 2 : 3);
}
static SLJIT_INLINE void compile_recurse_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
if (CURRENT_AS(recurse_backtrack)->inlined_pattern)
compile_backtrackingpath(common, current->top);
set_jumps(current->topbacktracks, LABEL());
if (CURRENT_AS(recurse_backtrack)->inlined_pattern)
return;
if (common->has_set_som && common->mark_ptr != 0)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
free_stack(common, 2);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->mark_ptr, TMP1, 0);
}
else if (common->has_set_som || common->mark_ptr != 0)
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->has_set_som ? (int)(OVECTOR(0)) : common->mark_ptr, TMP2, 0);
}
}
static void compile_assert_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
pcre_uchar *cc = current->cc;
pcre_uchar bra = OP_BRA;
struct sljit_jump *brajump = NULL;
SLJIT_ASSERT(*cc != OP_BRAMINZERO);
if (*cc == OP_BRAZERO)
{
bra = *cc;
cc++;
}
if (bra == OP_BRAZERO)
{
SLJIT_ASSERT(current->topbacktracks == NULL);
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
}
if (CURRENT_AS(assert_backtrack)->framesize < 0)
{
set_jumps(current->topbacktracks, LABEL());
if (bra == OP_BRAZERO)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0, CURRENT_AS(assert_backtrack)->matchingpath);
free_stack(common, 1);
}
return;
}
if (bra == OP_BRAZERO)
{
if (*cc == OP_ASSERT_NOT || *cc == OP_ASSERTBACK_NOT)
{
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0, CURRENT_AS(assert_backtrack)->matchingpath);
free_stack(common, 1);
return;
}
free_stack(common, 1);
brajump = CMP(SLJIT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0);
}
if (*cc == OP_ASSERT || *cc == OP_ASSERTBACK)
{
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), CURRENT_AS(assert_backtrack)->private_data_ptr);
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), CURRENT_AS(assert_backtrack)->private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(-CURRENT_AS(assert_backtrack)->framesize - 1));
set_jumps(current->topbacktracks, LABEL());
}
else
set_jumps(current->topbacktracks, LABEL());
if (bra == OP_BRAZERO)
{
/* We know there is enough place on the stack. */
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, sizeof(sljit_sw));
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), SLJIT_IMM, 0);
JUMPTO(SLJIT_JUMP, CURRENT_AS(assert_backtrack)->matchingpath);
JUMPHERE(brajump);
}
}
static void compile_bracket_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
int opcode, stacksize, alt_count, alt_max;
int offset = 0;
int private_data_ptr = CURRENT_AS(bracket_backtrack)->private_data_ptr;
int repeat_ptr = 0, repeat_type = 0, repeat_count = 0;
pcre_uchar *cc = current->cc;
pcre_uchar *ccbegin;
pcre_uchar *ccprev;
pcre_uchar bra = OP_BRA;
pcre_uchar ket;
assert_backtrack *assert;
sljit_uw *next_update_addr = NULL;
BOOL has_alternatives;
BOOL needs_control_head = FALSE;
struct sljit_jump *brazero = NULL;
struct sljit_jump *alt1 = NULL;
struct sljit_jump *alt2 = NULL;
struct sljit_jump *once = NULL;
struct sljit_jump *cond = NULL;
struct sljit_label *rmin_label = NULL;
struct sljit_label *exact_label = NULL;
if (*cc == OP_BRAZERO || *cc == OP_BRAMINZERO)
{
bra = *cc;
cc++;
}
opcode = *cc;
ccbegin = bracketend(cc) - 1 - LINK_SIZE;
ket = *ccbegin;
if (ket == OP_KET && PRIVATE_DATA(ccbegin) != 0)
{
repeat_ptr = PRIVATE_DATA(ccbegin);
repeat_type = PRIVATE_DATA(ccbegin + 2);
repeat_count = PRIVATE_DATA(ccbegin + 3);
SLJIT_ASSERT(repeat_type != 0 && repeat_count != 0);
if (repeat_type == OP_UPTO)
ket = OP_KETRMAX;
if (repeat_type == OP_MINUPTO)
ket = OP_KETRMIN;
}
ccbegin = cc;
cc += GET(cc, 1);
has_alternatives = *cc == OP_ALT;
if (SLJIT_UNLIKELY(opcode == OP_COND) || SLJIT_UNLIKELY(opcode == OP_SCOND))
has_alternatives = (ccbegin[1 + LINK_SIZE] >= OP_ASSERT && ccbegin[1 + LINK_SIZE] <= OP_ASSERTBACK_NOT) || CURRENT_AS(bracket_backtrack)->u.condfailed != NULL;
if (opcode == OP_CBRA || opcode == OP_SCBRA)
offset = (GET2(ccbegin, 1 + LINK_SIZE)) << 1;
if (SLJIT_UNLIKELY(opcode == OP_COND) && (*cc == OP_KETRMAX || *cc == OP_KETRMIN))
opcode = OP_SCOND;
if (SLJIT_UNLIKELY(opcode == OP_ONCE_NC))
opcode = OP_ONCE;
alt_max = has_alternatives ? no_alternatives(ccbegin) : 0;
/* Decoding the needs_control_head in framesize. */
if (opcode == OP_ONCE)
{
needs_control_head = (CURRENT_AS(bracket_backtrack)->u.framesize & 0x1) != 0;
CURRENT_AS(bracket_backtrack)->u.framesize >>= 1;
}
if (ket != OP_KET && repeat_type != 0)
{
/* TMP1 is used in OP_KETRMIN below. */
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
if (repeat_type == OP_UPTO)
OP2(SLJIT_ADD, SLJIT_MEM1(SLJIT_SP), repeat_ptr, TMP1, 0, SLJIT_IMM, 1);
else
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), repeat_ptr, TMP1, 0);
}
if (ket == OP_KETRMAX)
{
if (bra == OP_BRAZERO)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
brazero = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, 0);
}
}
else if (ket == OP_KETRMIN)
{
if (bra != OP_BRAMINZERO)
{
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
if (repeat_type != 0)
{
/* TMP1 was set a few lines above. */
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, 0, CURRENT_AS(bracket_backtrack)->recursive_matchingpath);
/* Drop STR_PTR for non-greedy plus quantifier. */
if (opcode != OP_ONCE)
free_stack(common, 1);
}
else if (opcode >= OP_SBRA || opcode == OP_ONCE)
{
/* Checking zero-length iteration. */
if (opcode != OP_ONCE || CURRENT_AS(bracket_backtrack)->u.framesize < 0)
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr, CURRENT_AS(bracket_backtrack)->recursive_matchingpath);
else
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_MEM1(TMP1), STACK(-CURRENT_AS(bracket_backtrack)->u.framesize - 2), CURRENT_AS(bracket_backtrack)->recursive_matchingpath);
}
/* Drop STR_PTR for non-greedy plus quantifier. */
if (opcode != OP_ONCE)
free_stack(common, 1);
}
else
JUMPTO(SLJIT_JUMP, CURRENT_AS(bracket_backtrack)->recursive_matchingpath);
}
rmin_label = LABEL();
if (repeat_type != 0)
OP2(SLJIT_ADD, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_IMM, 1);
}
else if (bra == OP_BRAZERO)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
brazero = CMP(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, 0);
}
else if (repeat_type == OP_EXACT)
{
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_IMM, 1);
exact_label = LABEL();
}
if (offset != 0)
{
if (common->capture_last_ptr != 0)
{
SLJIT_ASSERT(common->optimized_cbracket[offset >> 1] == 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr, TMP1, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(2));
free_stack(common, 3);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP2, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), TMP1, 0);
}
else if (common->optimized_cbracket[offset >> 1] == 0)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
free_stack(common, 2);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), TMP2, 0);
}
}
if (SLJIT_UNLIKELY(opcode == OP_ONCE))
{
if (CURRENT_AS(bracket_backtrack)->u.framesize >= 0)
{
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
}
once = JUMP(SLJIT_JUMP);
}
else if (SLJIT_UNLIKELY(opcode == OP_COND) || SLJIT_UNLIKELY(opcode == OP_SCOND))
{
if (has_alternatives)
{
/* Always exactly one alternative. */
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
alt_max = 2;
alt1 = CMP(SLJIT_EQUAL, TMP1, 0, SLJIT_IMM, sizeof(sljit_uw));
}
}
else if (has_alternatives)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
if (alt_max > 4)
{
/* Table jump if alt_max is greater than 4. */
next_update_addr = allocate_read_only_data(common, alt_max * sizeof(sljit_uw));
if (SLJIT_UNLIKELY(next_update_addr == NULL))
return;
sljit_emit_ijump(compiler, SLJIT_JUMP, SLJIT_MEM1(TMP1), (sljit_sw)next_update_addr);
add_label_addr(common, next_update_addr++);
}
else
{
if (alt_max == 4)
alt2 = CMP(SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, 2 * sizeof(sljit_uw));
alt1 = CMP(SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, sizeof(sljit_uw));
}
}
COMPILE_BACKTRACKINGPATH(current->top);
if (current->topbacktracks)
set_jumps(current->topbacktracks, LABEL());
if (SLJIT_UNLIKELY(opcode == OP_COND) || SLJIT_UNLIKELY(opcode == OP_SCOND))
{
/* Conditional block always has at most one alternative. */
if (ccbegin[1 + LINK_SIZE] >= OP_ASSERT && ccbegin[1 + LINK_SIZE] <= OP_ASSERTBACK_NOT)
{
SLJIT_ASSERT(has_alternatives);
assert = CURRENT_AS(bracket_backtrack)->u.assert;
if (assert->framesize >= 0 && (ccbegin[1 + LINK_SIZE] == OP_ASSERT || ccbegin[1 + LINK_SIZE] == OP_ASSERTBACK))
{
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), assert->private_data_ptr);
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), assert->private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(-assert->framesize - 1));
}
cond = JUMP(SLJIT_JUMP);
set_jumps(CURRENT_AS(bracket_backtrack)->u.assert->condfailed, LABEL());
}
else if (CURRENT_AS(bracket_backtrack)->u.condfailed != NULL)
{
SLJIT_ASSERT(has_alternatives);
cond = JUMP(SLJIT_JUMP);
set_jumps(CURRENT_AS(bracket_backtrack)->u.condfailed, LABEL());
}
else
SLJIT_ASSERT(!has_alternatives);
}
if (has_alternatives)
{
alt_count = sizeof(sljit_uw);
do
{
current->top = NULL;
current->topbacktracks = NULL;
current->nextbacktracks = NULL;
/* Conditional blocks always have an additional alternative, even if it is empty. */
if (*cc == OP_ALT)
{
ccprev = cc + 1 + LINK_SIZE;
cc += GET(cc, 1);
if (opcode != OP_COND && opcode != OP_SCOND)
{
if (opcode != OP_ONCE)
{
if (private_data_ptr != 0)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), private_data_ptr);
else
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
}
else
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(needs_control_head ? 1 : 0));
}
compile_matchingpath(common, ccprev, cc, current);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return;
}
/* Instructions after the current alternative is successfully matched. */
/* There is a similar code in compile_bracket_matchingpath. */
if (opcode == OP_ONCE)
match_once_common(common, ket, CURRENT_AS(bracket_backtrack)->u.framesize, private_data_ptr, has_alternatives, needs_control_head);
stacksize = 0;
if (repeat_type == OP_MINUPTO)
{
/* We need to preserve the counter. TMP2 will be used below. */
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), repeat_ptr);
stacksize++;
}
if (ket != OP_KET || bra != OP_BRA)
stacksize++;
if (offset != 0)
{
if (common->capture_last_ptr != 0)
stacksize++;
if (common->optimized_cbracket[offset >> 1] == 0)
stacksize += 2;
}
if (opcode != OP_ONCE)
stacksize++;
if (stacksize > 0)
allocate_stack(common, stacksize);
stacksize = 0;
if (repeat_type == OP_MINUPTO)
{
/* TMP2 was set above. */
OP2(SLJIT_SUB, SLJIT_MEM1(STACK_TOP), STACK(stacksize), TMP2, 0, SLJIT_IMM, 1);
stacksize++;
}
if (ket != OP_KET || bra != OP_BRA)
{
if (ket != OP_KET)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), STR_PTR, 0);
else
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), SLJIT_IMM, 0);
stacksize++;
}
if (offset != 0)
stacksize = match_capture_common(common, stacksize, offset, private_data_ptr);
if (opcode != OP_ONCE)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(stacksize), SLJIT_IMM, alt_count);
if (offset != 0 && ket == OP_KETRMAX && common->optimized_cbracket[offset >> 1] != 0)
{
/* If ket is not OP_KETRMAX, this code path is executed after the jump to alternative_matchingpath. */
SLJIT_ASSERT(private_data_ptr == OVECTOR(offset + 0));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), STR_PTR, 0);
}
JUMPTO(SLJIT_JUMP, CURRENT_AS(bracket_backtrack)->alternative_matchingpath);
if (opcode != OP_ONCE)
{
if (alt_max > 4)
add_label_addr(common, next_update_addr++);
else
{
if (alt_count != 2 * sizeof(sljit_uw))
{
JUMPHERE(alt1);
if (alt_max == 3 && alt_count == sizeof(sljit_uw))
alt2 = CMP(SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, 2 * sizeof(sljit_uw));
}
else
{
JUMPHERE(alt2);
if (alt_max == 4)
alt1 = CMP(SLJIT_GREATER_EQUAL, TMP1, 0, SLJIT_IMM, 3 * sizeof(sljit_uw));
}
}
alt_count += sizeof(sljit_uw);
}
COMPILE_BACKTRACKINGPATH(current->top);
if (current->topbacktracks)
set_jumps(current->topbacktracks, LABEL());
SLJIT_ASSERT(!current->nextbacktracks);
}
while (*cc == OP_ALT);
if (cond != NULL)
{
SLJIT_ASSERT(opcode == OP_COND || opcode == OP_SCOND);
assert = CURRENT_AS(bracket_backtrack)->u.assert;
if ((ccbegin[1 + LINK_SIZE] == OP_ASSERT_NOT || ccbegin[1 + LINK_SIZE] == OP_ASSERTBACK_NOT) && assert->framesize >= 0)
{
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), assert->private_data_ptr);
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), assert->private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(-assert->framesize - 1));
}
JUMPHERE(cond);
}
/* Free the STR_PTR. */
if (private_data_ptr == 0)
free_stack(common, 1);
}
if (offset != 0)
{
/* Using both tmp register is better for instruction scheduling. */
if (common->optimized_cbracket[offset >> 1] != 0)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
free_stack(common, 2);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), TMP2, 0);
}
else
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, TMP1, 0);
}
}
else if (opcode == OP_SBRA || opcode == OP_SCOND)
{
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
}
else if (opcode == OP_ONCE)
{
cc = ccbegin + GET(ccbegin, 1);
stacksize = needs_control_head ? 1 : 0;
if (CURRENT_AS(bracket_backtrack)->u.framesize >= 0)
{
/* Reset head and drop saved frame. */
stacksize += CURRENT_AS(bracket_backtrack)->u.framesize + ((ket != OP_KET || *cc == OP_ALT) ? 2 : 1);
}
else if (ket == OP_KETRMAX || (*cc == OP_ALT && ket != OP_KETRMIN))
{
/* The STR_PTR must be released. */
stacksize++;
}
if (stacksize > 0)
free_stack(common, stacksize);
JUMPHERE(once);
/* Restore previous private_data_ptr */
if (CURRENT_AS(bracket_backtrack)->u.framesize >= 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(-CURRENT_AS(bracket_backtrack)->u.framesize - 1));
else if (ket == OP_KETRMIN)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
/* See the comment below. */
free_stack(common, 2);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), private_data_ptr, TMP1, 0);
}
}
if (repeat_type == OP_EXACT)
{
OP2(SLJIT_ADD, TMP1, 0, SLJIT_MEM1(SLJIT_SP), repeat_ptr, SLJIT_IMM, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), repeat_ptr, TMP1, 0);
CMPTO(SLJIT_LESS_EQUAL, TMP1, 0, SLJIT_IMM, repeat_count, exact_label);
}
else if (ket == OP_KETRMAX)
{
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
if (bra != OP_BRAZERO)
free_stack(common, 1);
CMPTO(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0, CURRENT_AS(bracket_backtrack)->recursive_matchingpath);
if (bra == OP_BRAZERO)
{
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
JUMPTO(SLJIT_JUMP, CURRENT_AS(bracket_backtrack)->zero_matchingpath);
JUMPHERE(brazero);
free_stack(common, 1);
}
}
else if (ket == OP_KETRMIN)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
/* OP_ONCE removes everything in case of a backtrack, so we don't
need to explicitly release the STR_PTR. The extra release would
affect badly the free_stack(2) above. */
if (opcode != OP_ONCE)
free_stack(common, 1);
CMPTO(SLJIT_NOT_EQUAL, TMP1, 0, SLJIT_IMM, 0, rmin_label);
if (opcode == OP_ONCE)
free_stack(common, bra == OP_BRAMINZERO ? 2 : 1);
else if (bra == OP_BRAMINZERO)
free_stack(common, 1);
}
else if (bra == OP_BRAZERO)
{
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
JUMPTO(SLJIT_JUMP, CURRENT_AS(bracket_backtrack)->zero_matchingpath);
JUMPHERE(brazero);
}
}
static SLJIT_INLINE void compile_bracketpos_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
int offset;
struct sljit_jump *jump;
if (CURRENT_AS(bracketpos_backtrack)->framesize < 0)
{
if (*current->cc == OP_CBRAPOS || *current->cc == OP_SCBRAPOS)
{
offset = (GET2(current->cc, 1 + LINK_SIZE)) << 1;
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(1));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset), TMP1, 0);
if (common->capture_last_ptr != 0)
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(2));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(offset + 1), TMP2, 0);
if (common->capture_last_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr, TMP1, 0);
}
set_jumps(current->topbacktracks, LABEL());
free_stack(common, CURRENT_AS(bracketpos_backtrack)->stacksize);
return;
}
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), CURRENT_AS(bracketpos_backtrack)->private_data_ptr);
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
if (current->topbacktracks)
{
jump = JUMP(SLJIT_JUMP);
set_jumps(current->topbacktracks, LABEL());
/* Drop the stack frame. */
free_stack(common, CURRENT_AS(bracketpos_backtrack)->stacksize);
JUMPHERE(jump);
}
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), CURRENT_AS(bracketpos_backtrack)->private_data_ptr, SLJIT_MEM1(STACK_TOP), STACK(-CURRENT_AS(bracketpos_backtrack)->framesize - 1));
}
static SLJIT_INLINE void compile_braminzero_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
assert_backtrack backtrack;
current->top = NULL;
current->topbacktracks = NULL;
current->nextbacktracks = NULL;
if (current->cc[1] > OP_ASSERTBACK_NOT)
{
/* Manual call of compile_bracket_matchingpath and compile_bracket_backtrackingpath. */
compile_bracket_matchingpath(common, current->cc, current);
compile_bracket_backtrackingpath(common, current->top);
}
else
{
memset(&backtrack, 0, sizeof(backtrack));
backtrack.common.cc = current->cc;
backtrack.matchingpath = CURRENT_AS(braminzero_backtrack)->matchingpath;
/* Manual call of compile_assert_matchingpath. */
compile_assert_matchingpath(common, current->cc, &backtrack, FALSE);
}
SLJIT_ASSERT(!current->nextbacktracks && !current->topbacktracks);
}
static SLJIT_INLINE void compile_control_verb_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
pcre_uchar opcode = *current->cc;
struct sljit_label *loop;
struct sljit_jump *jump;
if (opcode == OP_THEN || opcode == OP_THEN_ARG)
{
if (common->then_trap != NULL)
{
SLJIT_ASSERT(common->control_head_ptr != 0);
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_IMM, type_then_trap);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_IMM, common->then_trap->start);
jump = JUMP(SLJIT_JUMP);
loop = LABEL();
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
JUMPHERE(jump);
CMPTO(SLJIT_NOT_EQUAL, SLJIT_MEM1(STACK_TOP), STACK(1), TMP1, 0, loop);
CMPTO(SLJIT_NOT_EQUAL, SLJIT_MEM1(STACK_TOP), STACK(2), TMP2, 0, loop);
add_jump(compiler, &common->then_trap->quit, JUMP(SLJIT_JUMP));
return;
}
else if (common->positive_assert)
{
add_jump(compiler, &common->positive_assert_quit, JUMP(SLJIT_JUMP));
return;
}
}
if (common->local_exit)
{
if (common->quit_label == NULL)
add_jump(compiler, &common->quit, JUMP(SLJIT_JUMP));
else
JUMPTO(SLJIT_JUMP, common->quit_label);
return;
}
if (opcode == OP_SKIP_ARG)
{
SLJIT_ASSERT(common->control_head_ptr != 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS0, STACK_TOP, 0);
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_IMM, (sljit_sw)(current->cc + 2));
sljit_emit_icall(compiler, SLJIT_CALL, SLJIT_RET(SW) | SLJIT_ARG1(SW) | SLJIT_ARG2(SW), SLJIT_IMM, SLJIT_FUNC_OFFSET(do_search_mark));
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
OP1(SLJIT_MOV, STR_PTR, 0, TMP1, 0);
add_jump(compiler, &common->reset_match, CMP(SLJIT_NOT_EQUAL, STR_PTR, 0, SLJIT_IMM, 0));
return;
}
if (opcode == OP_SKIP)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
else
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_IMM, 0);
add_jump(compiler, &common->reset_match, JUMP(SLJIT_JUMP));
}
static SLJIT_INLINE void compile_then_trap_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
struct sljit_jump *jump;
int size;
if (CURRENT_AS(then_trap_backtrack)->then_trap)
{
common->then_trap = CURRENT_AS(then_trap_backtrack)->then_trap;
return;
}
size = CURRENT_AS(then_trap_backtrack)->framesize;
size = 3 + (size < 0 ? 0 : size);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(size - 3));
free_stack(common, size);
jump = JUMP(SLJIT_JUMP);
set_jumps(CURRENT_AS(then_trap_backtrack)->quit, LABEL());
/* STACK_TOP is set by THEN. */
if (CURRENT_AS(then_trap_backtrack)->framesize >= 0)
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 3);
JUMPHERE(jump);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, TMP1, 0);
}
static void compile_backtrackingpath(compiler_common *common, struct backtrack_common *current)
{
DEFINE_COMPILER;
then_trap_backtrack *save_then_trap = common->then_trap;
while (current)
{
if (current->nextbacktracks != NULL)
set_jumps(current->nextbacktracks, LABEL());
switch(*current->cc)
{
case OP_SET_SOM:
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), TMP1, 0);
break;
case OP_STAR:
case OP_MINSTAR:
case OP_PLUS:
case OP_MINPLUS:
case OP_QUERY:
case OP_MINQUERY:
case OP_UPTO:
case OP_MINUPTO:
case OP_EXACT:
case OP_POSSTAR:
case OP_POSPLUS:
case OP_POSQUERY:
case OP_POSUPTO:
case OP_STARI:
case OP_MINSTARI:
case OP_PLUSI:
case OP_MINPLUSI:
case OP_QUERYI:
case OP_MINQUERYI:
case OP_UPTOI:
case OP_MINUPTOI:
case OP_EXACTI:
case OP_POSSTARI:
case OP_POSPLUSI:
case OP_POSQUERYI:
case OP_POSUPTOI:
case OP_NOTSTAR:
case OP_NOTMINSTAR:
case OP_NOTPLUS:
case OP_NOTMINPLUS:
case OP_NOTQUERY:
case OP_NOTMINQUERY:
case OP_NOTUPTO:
case OP_NOTMINUPTO:
case OP_NOTEXACT:
case OP_NOTPOSSTAR:
case OP_NOTPOSPLUS:
case OP_NOTPOSQUERY:
case OP_NOTPOSUPTO:
case OP_NOTSTARI:
case OP_NOTMINSTARI:
case OP_NOTPLUSI:
case OP_NOTMINPLUSI:
case OP_NOTQUERYI:
case OP_NOTMINQUERYI:
case OP_NOTUPTOI:
case OP_NOTMINUPTOI:
case OP_NOTEXACTI:
case OP_NOTPOSSTARI:
case OP_NOTPOSPLUSI:
case OP_NOTPOSQUERYI:
case OP_NOTPOSUPTOI:
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
case OP_TYPEEXACT:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSPLUS:
case OP_TYPEPOSQUERY:
case OP_TYPEPOSUPTO:
case OP_CLASS:
case OP_NCLASS:
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
#endif
compile_iterator_backtrackingpath(common, current);
break;
case OP_REF:
case OP_REFI:
case OP_DNREF:
case OP_DNREFI:
compile_ref_iterator_backtrackingpath(common, current);
break;
case OP_RECURSE:
compile_recurse_backtrackingpath(common, current);
break;
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
compile_assert_backtrackingpath(common, current);
break;
case OP_ONCE:
case OP_ONCE_NC:
case OP_BRA:
case OP_CBRA:
case OP_COND:
case OP_SBRA:
case OP_SCBRA:
case OP_SCOND:
compile_bracket_backtrackingpath(common, current);
break;
case OP_BRAZERO:
if (current->cc[1] > OP_ASSERTBACK_NOT)
compile_bracket_backtrackingpath(common, current);
else
compile_assert_backtrackingpath(common, current);
break;
case OP_BRAPOS:
case OP_CBRAPOS:
case OP_SBRAPOS:
case OP_SCBRAPOS:
case OP_BRAPOSZERO:
compile_bracketpos_backtrackingpath(common, current);
break;
case OP_BRAMINZERO:
compile_braminzero_backtrackingpath(common, current);
break;
case OP_MARK:
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(common->has_skip_arg ? 4 : 0));
if (common->has_skip_arg)
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
free_stack(common, common->has_skip_arg ? 5 : 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->mark_ptr, TMP1, 0);
if (common->has_skip_arg)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, TMP2, 0);
break;
case OP_THEN:
case OP_THEN_ARG:
case OP_PRUNE:
case OP_PRUNE_ARG:
case OP_SKIP:
case OP_SKIP_ARG:
compile_control_verb_backtrackingpath(common, current);
break;
case OP_COMMIT:
if (!common->local_exit)
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, PCRE_ERROR_NOMATCH);
if (common->quit_label == NULL)
add_jump(compiler, &common->quit, JUMP(SLJIT_JUMP));
else
JUMPTO(SLJIT_JUMP, common->quit_label);
break;
case OP_CALLOUT:
case OP_FAIL:
case OP_ACCEPT:
case OP_ASSERT_ACCEPT:
set_jumps(current->topbacktracks, LABEL());
break;
case OP_THEN_TRAP:
/* A virtual opcode for then traps. */
compile_then_trap_backtrackingpath(common, current);
break;
default:
SLJIT_UNREACHABLE();
break;
}
current = current->prev;
}
common->then_trap = save_then_trap;
}
static SLJIT_INLINE void compile_recurse(compiler_common *common)
{
DEFINE_COMPILER;
pcre_uchar *cc = common->start + common->currententry->start;
pcre_uchar *ccbegin = cc + 1 + LINK_SIZE + (*cc == OP_BRA ? 0 : IMM2_SIZE);
pcre_uchar *ccend = bracketend(cc) - (1 + LINK_SIZE);
BOOL needs_control_head;
int framesize = get_framesize(common, cc, NULL, TRUE, &needs_control_head);
int private_data_size = get_private_data_copy_length(common, ccbegin, ccend, needs_control_head);
int alternativesize;
BOOL needs_frame;
backtrack_common altbacktrack;
struct sljit_jump *jump;
/* Recurse captures then. */
common->then_trap = NULL;
SLJIT_ASSERT(*cc == OP_BRA || *cc == OP_CBRA || *cc == OP_CBRAPOS || *cc == OP_SCBRA || *cc == OP_SCBRAPOS);
needs_frame = framesize >= 0;
if (!needs_frame)
framesize = 0;
alternativesize = *(cc + GET(cc, 1)) == OP_ALT ? 1 : 0;
SLJIT_ASSERT(common->currententry->entry == NULL && common->recursive_head_ptr != 0);
common->currententry->entry = LABEL();
set_jumps(common->currententry->calls, common->currententry->entry);
sljit_emit_fast_enter(compiler, TMP2, 0);
count_match(common);
allocate_stack(common, private_data_size + framesize + alternativesize);
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(private_data_size + framesize + alternativesize - 1), TMP2, 0);
copy_private_data(common, ccbegin, ccend, TRUE, framesize + alternativesize, private_data_size + framesize + alternativesize, needs_control_head);
if (needs_control_head)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_IMM, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->recursive_head_ptr, STACK_TOP, 0);
if (needs_frame)
init_frame(common, cc, NULL, framesize + alternativesize - 1, alternativesize, TRUE);
if (alternativesize > 0)
OP1(SLJIT_MOV, SLJIT_MEM1(STACK_TOP), STACK(0), STR_PTR, 0);
memset(&altbacktrack, 0, sizeof(backtrack_common));
common->quit_label = NULL;
common->accept_label = NULL;
common->quit = NULL;
common->accept = NULL;
altbacktrack.cc = ccbegin;
cc += GET(cc, 1);
while (1)
{
altbacktrack.top = NULL;
altbacktrack.topbacktracks = NULL;
if (altbacktrack.cc != ccbegin)
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(STACK_TOP), STACK(0));
compile_matchingpath(common, altbacktrack.cc, cc, &altbacktrack);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return;
add_jump(compiler, &common->accept, JUMP(SLJIT_JUMP));
compile_backtrackingpath(common, altbacktrack.top);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
return;
set_jumps(altbacktrack.topbacktracks, LABEL());
if (*cc != OP_ALT)
break;
altbacktrack.cc = cc + 1 + LINK_SIZE;
cc += GET(cc, 1);
}
/* None of them matched. */
OP1(SLJIT_MOV, TMP3, 0, SLJIT_IMM, 0);
jump = JUMP(SLJIT_JUMP);
if (common->quit != NULL)
{
set_jumps(common->quit, LABEL());
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), common->recursive_head_ptr);
if (needs_frame)
{
OP2(SLJIT_ADD, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, (framesize + alternativesize) * sizeof(sljit_sw));
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, (framesize + alternativesize) * sizeof(sljit_sw));
}
OP1(SLJIT_MOV, TMP3, 0, SLJIT_IMM, 0);
common->quit = NULL;
add_jump(compiler, &common->quit, JUMP(SLJIT_JUMP));
}
set_jumps(common->accept, LABEL());
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), common->recursive_head_ptr);
if (needs_frame)
{
OP2(SLJIT_ADD, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, (framesize + alternativesize) * sizeof(sljit_sw));
add_jump(compiler, &common->revertframes, JUMP(SLJIT_FAST_CALL));
OP2(SLJIT_SUB, STACK_TOP, 0, STACK_TOP, 0, SLJIT_IMM, (framesize + alternativesize) * sizeof(sljit_sw));
}
OP1(SLJIT_MOV, TMP3, 0, SLJIT_IMM, 1);
JUMPHERE(jump);
if (common->quit != NULL)
set_jumps(common->quit, LABEL());
copy_private_data(common, ccbegin, ccend, FALSE, framesize + alternativesize, private_data_size + framesize + alternativesize, needs_control_head);
free_stack(common, private_data_size + framesize + alternativesize);
if (needs_control_head)
{
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(STACK_TOP), STACK(-3));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(-2));
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->recursive_head_ptr, TMP1, 0);
OP1(SLJIT_MOV, TMP1, 0, TMP3, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, TMP2, 0);
}
else
{
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(STACK_TOP), STACK(-2));
OP1(SLJIT_MOV, TMP1, 0, TMP3, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->recursive_head_ptr, TMP2, 0);
}
sljit_emit_fast_return(compiler, SLJIT_MEM1(STACK_TOP), STACK(-1));
}
#undef COMPILE_BACKTRACKINGPATH
#undef CURRENT_AS
void
PRIV(jit_compile)(const REAL_PCRE *re, PUBL(extra) *extra, int mode)
{
struct sljit_compiler *compiler;
backtrack_common rootbacktrack;
compiler_common common_data;
compiler_common *common = &common_data;
const sljit_u8 *tables = re->tables;
pcre_study_data *study;
int private_data_size;
pcre_uchar *ccend;
executable_functions *functions;
void *executable_func;
sljit_uw executable_size;
sljit_uw total_length;
label_addr_list *label_addr;
struct sljit_label *mainloop_label = NULL;
struct sljit_label *continue_match_label;
struct sljit_label *empty_match_found_label = NULL;
struct sljit_label *empty_match_backtrack_label = NULL;
struct sljit_label *reset_match_label;
struct sljit_label *quit_label;
struct sljit_jump *jump;
struct sljit_jump *minlength_check_failed = NULL;
struct sljit_jump *reqbyte_notfound = NULL;
struct sljit_jump *empty_match = NULL;
SLJIT_ASSERT((extra->flags & PCRE_EXTRA_STUDY_DATA) != 0);
study = extra->study_data;
if (!tables)
tables = PRIV(default_tables);
memset(&rootbacktrack, 0, sizeof(backtrack_common));
memset(common, 0, sizeof(compiler_common));
rootbacktrack.cc = (pcre_uchar *)re + re->name_table_offset + re->name_count * re->name_entry_size;
common->start = rootbacktrack.cc;
common->read_only_data_head = NULL;
common->fcc = tables + fcc_offset;
common->lcc = (sljit_sw)(tables + lcc_offset);
common->mode = mode;
common->might_be_empty = study->minlength == 0;
common->nltype = NLTYPE_FIXED;
switch(re->options & PCRE_NEWLINE_BITS)
{
case 0:
/* Compile-time default */
switch(NEWLINE)
{
case -1: common->newline = (CHAR_CR << 8) | CHAR_NL; common->nltype = NLTYPE_ANY; break;
case -2: common->newline = (CHAR_CR << 8) | CHAR_NL; common->nltype = NLTYPE_ANYCRLF; break;
default: common->newline = NEWLINE; break;
}
break;
case PCRE_NEWLINE_CR: common->newline = CHAR_CR; break;
case PCRE_NEWLINE_LF: common->newline = CHAR_NL; break;
case PCRE_NEWLINE_CR+
PCRE_NEWLINE_LF: common->newline = (CHAR_CR << 8) | CHAR_NL; break;
case PCRE_NEWLINE_ANY: common->newline = (CHAR_CR << 8) | CHAR_NL; common->nltype = NLTYPE_ANY; break;
case PCRE_NEWLINE_ANYCRLF: common->newline = (CHAR_CR << 8) | CHAR_NL; common->nltype = NLTYPE_ANYCRLF; break;
default: return;
}
common->nlmax = READ_CHAR_MAX;
common->nlmin = 0;
if ((re->options & PCRE_BSR_ANYCRLF) != 0)
common->bsr_nltype = NLTYPE_ANYCRLF;
else if ((re->options & PCRE_BSR_UNICODE) != 0)
common->bsr_nltype = NLTYPE_ANY;
else
{
#ifdef BSR_ANYCRLF
common->bsr_nltype = NLTYPE_ANYCRLF;
#else
common->bsr_nltype = NLTYPE_ANY;
#endif
}
common->bsr_nlmax = READ_CHAR_MAX;
common->bsr_nlmin = 0;
common->endonly = (re->options & PCRE_DOLLAR_ENDONLY) != 0;
common->ctypes = (sljit_sw)(tables + ctypes_offset);
common->name_table = ((pcre_uchar *)re) + re->name_table_offset;
common->name_count = re->name_count;
common->name_entry_size = re->name_entry_size;
common->jscript_compat = (re->options & PCRE_JAVASCRIPT_COMPAT) != 0;
#ifdef SUPPORT_UTF
/* PCRE_UTF[16|32] have the same value as PCRE_UTF8. */
common->utf = (re->options & PCRE_UTF8) != 0;
#ifdef SUPPORT_UCP
common->use_ucp = (re->options & PCRE_UCP) != 0;
#endif
if (common->utf)
{
if (common->nltype == NLTYPE_ANY)
common->nlmax = 0x2029;
else if (common->nltype == NLTYPE_ANYCRLF)
common->nlmax = (CHAR_CR > CHAR_NL) ? CHAR_CR : CHAR_NL;
else
{
/* We only care about the first newline character. */
common->nlmax = common->newline & 0xff;
}
if (common->nltype == NLTYPE_FIXED)
common->nlmin = common->newline & 0xff;
else
common->nlmin = (CHAR_CR < CHAR_NL) ? CHAR_CR : CHAR_NL;
if (common->bsr_nltype == NLTYPE_ANY)
common->bsr_nlmax = 0x2029;
else
common->bsr_nlmax = (CHAR_CR > CHAR_NL) ? CHAR_CR : CHAR_NL;
common->bsr_nlmin = (CHAR_CR < CHAR_NL) ? CHAR_CR : CHAR_NL;
}
#endif /* SUPPORT_UTF */
ccend = bracketend(common->start);
/* Calculate the local space size on the stack. */
common->ovector_start = LIMIT_MATCH + sizeof(sljit_sw);
common->optimized_cbracket = (sljit_u8 *)SLJIT_MALLOC(re->top_bracket + 1, compiler->allocator_data);
if (!common->optimized_cbracket)
return;
#if defined DEBUG_FORCE_UNOPTIMIZED_CBRAS && DEBUG_FORCE_UNOPTIMIZED_CBRAS == 1
memset(common->optimized_cbracket, 0, re->top_bracket + 1);
#else
memset(common->optimized_cbracket, 1, re->top_bracket + 1);
#endif
SLJIT_ASSERT(*common->start == OP_BRA && ccend[-(1 + LINK_SIZE)] == OP_KET);
#if defined DEBUG_FORCE_UNOPTIMIZED_CBRAS && DEBUG_FORCE_UNOPTIMIZED_CBRAS == 2
common->capture_last_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
#endif
if (!check_opcode_types(common, common->start, ccend))
{
SLJIT_FREE(common->optimized_cbracket, compiler->allocator_data);
return;
}
/* Checking flags and updating ovector_start. */
if (mode == JIT_COMPILE && (re->flags & PCRE_REQCHSET) != 0 && (re->options & PCRE_NO_START_OPTIMIZE) == 0)
{
common->req_char_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
}
if (mode != JIT_COMPILE)
{
common->start_used_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
if (mode == JIT_PARTIAL_SOFT_COMPILE)
{
common->hit_start = common->ovector_start;
common->ovector_start += 2 * sizeof(sljit_sw);
}
}
if ((re->options & PCRE_FIRSTLINE) != 0)
{
common->match_end_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
}
#if defined DEBUG_FORCE_CONTROL_HEAD && DEBUG_FORCE_CONTROL_HEAD
common->control_head_ptr = 1;
#endif
if (common->control_head_ptr != 0)
{
common->control_head_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
}
if (common->has_set_som)
{
/* Saving the real start pointer is necessary. */
common->start_ptr = common->ovector_start;
common->ovector_start += sizeof(sljit_sw);
}
/* Aligning ovector to even number of sljit words. */
if ((common->ovector_start & sizeof(sljit_sw)) != 0)
common->ovector_start += sizeof(sljit_sw);
if (common->start_ptr == 0)
common->start_ptr = OVECTOR(0);
/* Capturing brackets cannot be optimized if callouts are allowed. */
if (common->capture_last_ptr != 0)
memset(common->optimized_cbracket, 0, re->top_bracket + 1);
SLJIT_ASSERT(!(common->req_char_ptr != 0 && common->start_used_ptr != 0));
common->cbra_ptr = OVECTOR_START + (re->top_bracket + 1) * 2 * sizeof(sljit_sw);
total_length = ccend - common->start;
common->private_data_ptrs = (sljit_s32 *)SLJIT_MALLOC(total_length * (sizeof(sljit_s32) + (common->has_then ? 1 : 0)), compiler->allocator_data);
if (!common->private_data_ptrs)
{
SLJIT_FREE(common->optimized_cbracket, compiler->allocator_data);
return;
}
memset(common->private_data_ptrs, 0, total_length * sizeof(sljit_s32));
private_data_size = common->cbra_ptr + (re->top_bracket + 1) * sizeof(sljit_sw);
set_private_data_ptrs(common, &private_data_size, ccend);
if ((re->options & PCRE_ANCHORED) == 0 && (re->options & PCRE_NO_START_OPTIMIZE) == 0)
{
if (!detect_fast_forward_skip(common, &private_data_size) && !common->has_skip_in_assert_back)
detect_fast_fail(common, common->start, &private_data_size, 4);
}
SLJIT_ASSERT(common->fast_fail_start_ptr <= common->fast_fail_end_ptr);
if (private_data_size > SLJIT_MAX_LOCAL_SIZE)
{
SLJIT_FREE(common->private_data_ptrs, compiler->allocator_data);
SLJIT_FREE(common->optimized_cbracket, compiler->allocator_data);
return;
}
if (common->has_then)
{
common->then_offsets = (sljit_u8 *)(common->private_data_ptrs + total_length);
memset(common->then_offsets, 0, total_length);
set_then_offsets(common, common->start, NULL);
}
compiler = sljit_create_compiler(NULL);
if (!compiler)
{
SLJIT_FREE(common->optimized_cbracket, compiler->allocator_data);
SLJIT_FREE(common->private_data_ptrs, compiler->allocator_data);
return;
}
common->compiler = compiler;
/* Main pcre_jit_exec entry. */
sljit_emit_enter(compiler, 0, SLJIT_ARG1(SW), 5, 5, 0, 0, private_data_size);
/* Register init. */
reset_ovector(common, (re->top_bracket + 1) * 2);
if (common->req_char_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->req_char_ptr, SLJIT_R0, 0);
OP1(SLJIT_MOV, ARGUMENTS, 0, SLJIT_S0, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_S0, 0);
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, str));
OP1(SLJIT_MOV, STR_END, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, end));
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, stack));
OP1(SLJIT_MOV_U32, TMP1, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, limit_match));
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(struct sljit_stack, end));
OP1(SLJIT_MOV, STACK_LIMIT, 0, SLJIT_MEM1(TMP2), SLJIT_OFFSETOF(struct sljit_stack, start));
OP2(SLJIT_ADD, TMP1, 0, TMP1, 0, SLJIT_IMM, 1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LIMIT_MATCH, TMP1, 0);
if (common->fast_fail_start_ptr < common->fast_fail_end_ptr)
reset_fast_fail(common);
if (mode == JIT_PARTIAL_SOFT_COMPILE)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->hit_start, SLJIT_IMM, -1);
if (common->mark_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->mark_ptr, SLJIT_IMM, 0);
if (common->control_head_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->control_head_ptr, SLJIT_IMM, 0);
/* Main part of the matching */
if ((re->options & PCRE_ANCHORED) == 0)
{
mainloop_label = mainloop_entry(common, (re->flags & PCRE_HASCRORLF) != 0);
continue_match_label = LABEL();
/* Forward search if possible. */
if ((re->options & PCRE_NO_START_OPTIMIZE) == 0)
{
if (mode == JIT_COMPILE && fast_forward_first_n_chars(common))
;
else if ((re->flags & PCRE_FIRSTSET) != 0)
fast_forward_first_char(common, (pcre_uchar)re->first_char, (re->flags & PCRE_FCH_CASELESS) != 0);
else if ((re->flags & PCRE_STARTLINE) != 0)
fast_forward_newline(common);
else if (study != NULL && (study->flags & PCRE_STUDY_MAPPED) != 0)
fast_forward_start_bits(common, study->start_bits);
}
}
else
continue_match_label = LABEL();
if (mode == JIT_COMPILE && study->minlength > 0 && (re->options & PCRE_NO_START_OPTIMIZE) == 0)
{
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, PCRE_ERROR_NOMATCH);
OP2(SLJIT_ADD, TMP2, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(study->minlength));
minlength_check_failed = CMP(SLJIT_GREATER, TMP2, 0, STR_END, 0);
}
if (common->req_char_ptr != 0)
reqbyte_notfound = search_requested_char(common, (pcre_uchar)re->req_char, (re->flags & PCRE_RCH_CASELESS) != 0, (re->flags & PCRE_FIRSTSET) != 0);
/* Store the current STR_PTR in OVECTOR(0). */
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), OVECTOR(0), STR_PTR, 0);
/* Copy the limit of allowed recursions. */
OP1(SLJIT_MOV, COUNT_MATCH, 0, SLJIT_MEM1(SLJIT_SP), LIMIT_MATCH);
if (common->capture_last_ptr != 0)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->capture_last_ptr, SLJIT_IMM, -1);
if (common->fast_forward_bc_ptr != NULL)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), PRIVATE_DATA(common->fast_forward_bc_ptr + 1), STR_PTR, 0);
if (common->start_ptr != OVECTOR(0))
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->start_ptr, STR_PTR, 0);
/* Copy the beginning of the string. */
if (mode == JIT_PARTIAL_SOFT_COMPILE)
{
jump = CMP(SLJIT_NOT_EQUAL, SLJIT_MEM1(SLJIT_SP), common->hit_start, SLJIT_IMM, -1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->hit_start + sizeof(sljit_sw), STR_PTR, 0);
JUMPHERE(jump);
}
else if (mode == JIT_PARTIAL_HARD_COMPILE)
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, STR_PTR, 0);
compile_matchingpath(common, common->start, ccend, &rootbacktrack);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
{
sljit_free_compiler(compiler);
SLJIT_FREE(common->optimized_cbracket, compiler->allocator_data);
SLJIT_FREE(common->private_data_ptrs, compiler->allocator_data);
free_read_only_data(common->read_only_data_head, compiler->allocator_data);
return;
}
if (common->might_be_empty)
{
empty_match = CMP(SLJIT_EQUAL, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP), OVECTOR(0));
empty_match_found_label = LABEL();
}
common->accept_label = LABEL();
if (common->accept != NULL)
set_jumps(common->accept, common->accept_label);
/* This means we have a match. Update the ovector. */
copy_ovector(common, re->top_bracket + 1);
common->quit_label = common->forced_quit_label = LABEL();
if (common->quit != NULL)
set_jumps(common->quit, common->quit_label);
if (common->forced_quit != NULL)
set_jumps(common->forced_quit, common->forced_quit_label);
if (minlength_check_failed != NULL)
SET_LABEL(minlength_check_failed, common->forced_quit_label);
sljit_emit_return(compiler, SLJIT_MOV, SLJIT_RETURN_REG, 0);
if (mode != JIT_COMPILE)
{
common->partialmatchlabel = LABEL();
set_jumps(common->partialmatch, common->partialmatchlabel);
return_with_partial_match(common, common->quit_label);
}
if (common->might_be_empty)
empty_match_backtrack_label = LABEL();
compile_backtrackingpath(common, rootbacktrack.top);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
{
sljit_free_compiler(compiler);
SLJIT_FREE(common->optimized_cbracket, compiler->allocator_data);
SLJIT_FREE(common->private_data_ptrs, compiler->allocator_data);
free_read_only_data(common->read_only_data_head, compiler->allocator_data);
return;
}
SLJIT_ASSERT(rootbacktrack.prev == NULL);
reset_match_label = LABEL();
if (mode == JIT_PARTIAL_SOFT_COMPILE)
{
/* Update hit_start only in the first time. */
jump = CMP(SLJIT_NOT_EQUAL, SLJIT_MEM1(SLJIT_SP), common->hit_start, SLJIT_IMM, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->start_used_ptr, SLJIT_IMM, -1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), common->hit_start, TMP1, 0);
JUMPHERE(jump);
}
/* Check we have remaining characters. */
if ((re->options & PCRE_ANCHORED) == 0 && (re->options & PCRE_FIRSTLINE) != 0)
{
SLJIT_ASSERT(common->match_end_ptr != 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), common->match_end_ptr);
}
OP1(SLJIT_MOV, STR_PTR, 0, SLJIT_MEM1(SLJIT_SP),
(common->fast_forward_bc_ptr != NULL) ? (PRIVATE_DATA(common->fast_forward_bc_ptr + 1)) : common->start_ptr);
if ((re->options & PCRE_ANCHORED) == 0)
{
if (common->ff_newline_shortcut != NULL)
{
if ((re->options & PCRE_FIRSTLINE) == 0)
CMPTO(SLJIT_LESS, STR_PTR, 0, STR_END, 0, common->ff_newline_shortcut);
/* There cannot be more newlines here. */
}
else
CMPTO(SLJIT_LESS, STR_PTR, 0, ((re->options & PCRE_FIRSTLINE) == 0) ? STR_END : TMP1, 0, mainloop_label);
}
/* No more remaining characters. */
if (reqbyte_notfound != NULL)
JUMPHERE(reqbyte_notfound);
if (mode == JIT_PARTIAL_SOFT_COMPILE)
CMPTO(SLJIT_NOT_EQUAL, SLJIT_MEM1(SLJIT_SP), common->hit_start, SLJIT_IMM, -1, common->partialmatchlabel);
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, PCRE_ERROR_NOMATCH);
JUMPTO(SLJIT_JUMP, common->quit_label);
flush_stubs(common);
if (common->might_be_empty)
{
JUMPHERE(empty_match);
OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, notempty));
CMPTO(SLJIT_NOT_EQUAL, TMP2, 0, SLJIT_IMM, 0, empty_match_backtrack_label);
OP1(SLJIT_MOV_U8, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, notempty_atstart));
CMPTO(SLJIT_EQUAL, TMP2, 0, SLJIT_IMM, 0, empty_match_found_label);
OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(TMP1), SLJIT_OFFSETOF(jit_arguments, str));
CMPTO(SLJIT_NOT_EQUAL, TMP2, 0, STR_PTR, 0, empty_match_found_label);
JUMPTO(SLJIT_JUMP, empty_match_backtrack_label);
}
common->fast_forward_bc_ptr = NULL;
common->fast_fail_start_ptr = 0;
common->fast_fail_end_ptr = 0;
common->currententry = common->entries;
common->local_exit = TRUE;
quit_label = common->quit_label;
while (common->currententry != NULL)
{
/* Might add new entries. */
compile_recurse(common);
if (SLJIT_UNLIKELY(sljit_get_compiler_error(compiler)))
{
sljit_free_compiler(compiler);
SLJIT_FREE(common->optimized_cbracket, compiler->allocator_data);
SLJIT_FREE(common->private_data_ptrs, compiler->allocator_data);
free_read_only_data(common->read_only_data_head, compiler->allocator_data);
return;
}
flush_stubs(common);
common->currententry = common->currententry->next;
}
common->local_exit = FALSE;
common->quit_label = quit_label;
/* Allocating stack, returns with PCRE_ERROR_JIT_STACKLIMIT if fails. */
/* This is a (really) rare case. */
set_jumps(common->stackalloc, LABEL());
/* RETURN_ADDR is not a saved register. */
sljit_emit_fast_enter(compiler, SLJIT_MEM1(SLJIT_SP), LOCALS0);
SLJIT_ASSERT(TMP1 == SLJIT_R0 && STACK_TOP == SLJIT_R1);
OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), LOCALS1, STACK_TOP, 0);
OP1(SLJIT_MOV, SLJIT_R0, 0, ARGUMENTS, 0);
OP2(SLJIT_SUB, SLJIT_R1, 0, STACK_LIMIT, 0, SLJIT_IMM, STACK_GROWTH_RATE);
OP1(SLJIT_MOV, SLJIT_R0, 0, SLJIT_MEM1(SLJIT_R0), SLJIT_OFFSETOF(jit_arguments, stack));
OP1(SLJIT_MOV, STACK_LIMIT, 0, TMP2, 0);
sljit_emit_icall(compiler, SLJIT_CALL, SLJIT_RET(SW) | SLJIT_ARG1(SW) | SLJIT_ARG2(SW), SLJIT_IMM, SLJIT_FUNC_OFFSET(sljit_stack_resize));
jump = CMP(SLJIT_EQUAL, SLJIT_RETURN_REG, 0, SLJIT_IMM, 0);
OP1(SLJIT_MOV, TMP2, 0, STACK_LIMIT, 0);
OP1(SLJIT_MOV, STACK_LIMIT, 0, SLJIT_RETURN_REG, 0);
OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), LOCALS0);
OP1(SLJIT_MOV, STACK_TOP, 0, SLJIT_MEM1(SLJIT_SP), LOCALS1);
sljit_emit_fast_return(compiler, TMP1, 0);
/* Allocation failed. */
JUMPHERE(jump);
/* We break the return address cache here, but this is a really rare case. */
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, PCRE_ERROR_JIT_STACKLIMIT);
JUMPTO(SLJIT_JUMP, common->quit_label);
/* Call limit reached. */
set_jumps(common->calllimit, LABEL());
OP1(SLJIT_MOV, SLJIT_RETURN_REG, 0, SLJIT_IMM, PCRE_ERROR_MATCHLIMIT);
JUMPTO(SLJIT_JUMP, common->quit_label);
if (common->revertframes != NULL)
{
set_jumps(common->revertframes, LABEL());
do_revertframes(common);
}
if (common->wordboundary != NULL)
{
set_jumps(common->wordboundary, LABEL());
check_wordboundary(common);
}
if (common->anynewline != NULL)
{
set_jumps(common->anynewline, LABEL());
check_anynewline(common);
}
if (common->hspace != NULL)
{
set_jumps(common->hspace, LABEL());
check_hspace(common);
}
if (common->vspace != NULL)
{
set_jumps(common->vspace, LABEL());
check_vspace(common);
}
if (common->casefulcmp != NULL)
{
set_jumps(common->casefulcmp, LABEL());
do_casefulcmp(common);
}
if (common->caselesscmp != NULL)
{
set_jumps(common->caselesscmp, LABEL());
do_caselesscmp(common);
}
if (common->reset_match != NULL)
{
set_jumps(common->reset_match, LABEL());
do_reset_match(common, (re->top_bracket + 1) * 2);
CMPTO(SLJIT_GREATER, STR_PTR, 0, TMP1, 0, continue_match_label);
OP1(SLJIT_MOV, STR_PTR, 0, TMP1, 0);
JUMPTO(SLJIT_JUMP, reset_match_label);
}
#ifdef SUPPORT_UTF
#ifdef COMPILE_PCRE8
if (common->utfreadchar != NULL)
{
set_jumps(common->utfreadchar, LABEL());
do_utfreadchar(common);
}
if (common->utfreadchar16 != NULL)
{
set_jumps(common->utfreadchar16, LABEL());
do_utfreadchar16(common);
}
if (common->utfreadtype8 != NULL)
{
set_jumps(common->utfreadtype8, LABEL());
do_utfreadtype8(common);
}
#endif /* COMPILE_PCRE8 */
#endif /* SUPPORT_UTF */
#ifdef SUPPORT_UCP
if (common->getucd != NULL)
{
set_jumps(common->getucd, LABEL());
do_getucd(common);
}
#endif
SLJIT_FREE(common->optimized_cbracket, compiler->allocator_data);
SLJIT_FREE(common->private_data_ptrs, compiler->allocator_data);
executable_func = sljit_generate_code(compiler);
executable_size = sljit_get_generated_code_size(compiler);
label_addr = common->label_addrs;
while (label_addr != NULL)
{
*label_addr->update_addr = sljit_get_label_addr(label_addr->label);
label_addr = label_addr->next;
}
sljit_free_compiler(compiler);
if (executable_func == NULL)
{
free_read_only_data(common->read_only_data_head, compiler->allocator_data);
return;
}
/* Reuse the function descriptor if possible. */
if ((extra->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 && extra->executable_jit != NULL)
functions = (executable_functions *)extra->executable_jit;
else
{
/* Note: If your memory-checker has flagged the allocation below as a
* memory leak, it is probably because you either forgot to call
* pcre_free_study() (or pcre16_free_study()) on the pcre_extra (or
* pcre16_extra) object, or you called said function after having
* cleared the PCRE_EXTRA_EXECUTABLE_JIT bit from the "flags" field
* of the object. (The function will only free the JIT data if the
* bit remains set, as the bit indicates that the pointer to the data
* is valid.)
*/
functions = SLJIT_MALLOC(sizeof(executable_functions), compiler->allocator_data);
if (functions == NULL)
{
/* This case is highly unlikely since we just recently
freed a lot of memory. Not impossible though. */
sljit_free_code(executable_func);
free_read_only_data(common->read_only_data_head, compiler->allocator_data);
return;
}
memset(functions, 0, sizeof(executable_functions));
functions->top_bracket = (re->top_bracket + 1) * 2;
functions->limit_match = (re->flags & PCRE_MLSET) != 0 ? re->limit_match : 0;
extra->executable_jit = functions;
extra->flags |= PCRE_EXTRA_EXECUTABLE_JIT;
}
functions->executable_funcs[mode] = executable_func;
functions->read_only_data_heads[mode] = common->read_only_data_head;
functions->executable_sizes[mode] = executable_size;
}
static SLJIT_NOINLINE int jit_machine_stack_exec(jit_arguments *arguments, void *executable_func)
{
union {
void *executable_func;
jit_function call_executable_func;
} convert_executable_func;
sljit_u8 local_space[MACHINE_STACK_SIZE];
struct sljit_stack local_stack;
local_stack.min_start = local_space;
local_stack.start = local_space;
local_stack.end = local_space + MACHINE_STACK_SIZE;
local_stack.top = local_space + MACHINE_STACK_SIZE;
arguments->stack = &local_stack;
convert_executable_func.executable_func = executable_func;
return convert_executable_func.call_executable_func(arguments);
}
int
PRIV(jit_exec)(const PUBL(extra) *extra_data, const pcre_uchar *subject,
int length, int start_offset, int options, int *offsets, int offset_count)
{
executable_functions *functions = (executable_functions *)extra_data->executable_jit;
union {
void *executable_func;
jit_function call_executable_func;
} convert_executable_func;
jit_arguments arguments;
int max_offset_count;
int retval;
int mode = JIT_COMPILE;
if ((options & PCRE_PARTIAL_HARD) != 0)
mode = JIT_PARTIAL_HARD_COMPILE;
else if ((options & PCRE_PARTIAL_SOFT) != 0)
mode = JIT_PARTIAL_SOFT_COMPILE;
if (functions->executable_funcs[mode] == NULL)
return PCRE_ERROR_JIT_BADOPTION;
/* Sanity checks should be handled by pcre_exec. */
arguments.str = subject + start_offset;
arguments.begin = subject;
arguments.end = subject + length;
arguments.mark_ptr = NULL;
/* JIT decreases this value less frequently than the interpreter. */
arguments.limit_match = ((extra_data->flags & PCRE_EXTRA_MATCH_LIMIT) == 0) ? MATCH_LIMIT : (sljit_u32)(extra_data->match_limit);
if (functions->limit_match != 0 && functions->limit_match < arguments.limit_match)
arguments.limit_match = functions->limit_match;
arguments.notbol = (options & PCRE_NOTBOL) != 0;
arguments.noteol = (options & PCRE_NOTEOL) != 0;
arguments.notempty = (options & PCRE_NOTEMPTY) != 0;
arguments.notempty_atstart = (options & PCRE_NOTEMPTY_ATSTART) != 0;
arguments.offsets = offsets;
arguments.callout_data = (extra_data->flags & PCRE_EXTRA_CALLOUT_DATA) != 0 ? extra_data->callout_data : NULL;
arguments.real_offset_count = offset_count;
/* pcre_exec() rounds offset_count to a multiple of 3, and then uses only 2/3 of
the output vector for storing captured strings, with the remainder used as
workspace. We don't need the workspace here. For compatibility, we limit the
number of captured strings in the same way as pcre_exec(), so that the user
gets the same result with and without JIT. */
if (offset_count != 2)
offset_count = ((offset_count - (offset_count % 3)) * 2) / 3;
max_offset_count = functions->top_bracket;
if (offset_count > max_offset_count)
offset_count = max_offset_count;
arguments.offset_count = offset_count;
if (functions->callback)
arguments.stack = (struct sljit_stack *)functions->callback(functions->userdata);
else
arguments.stack = (struct sljit_stack *)functions->userdata;
if (arguments.stack == NULL)
retval = jit_machine_stack_exec(&arguments, functions->executable_funcs[mode]);
else
{
convert_executable_func.executable_func = functions->executable_funcs[mode];
retval = convert_executable_func.call_executable_func(&arguments);
}
if (retval * 2 > offset_count)
retval = 0;
if ((extra_data->flags & PCRE_EXTRA_MARK) != 0)
*(extra_data->mark) = arguments.mark_ptr;
return retval;
}
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_jit_exec(const pcre *argument_re, const pcre_extra *extra_data,
PCRE_SPTR subject, int length, int start_offset, int options,
int *offsets, int offset_count, pcre_jit_stack *stack)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_jit_exec(const pcre16 *argument_re, const pcre16_extra *extra_data,
PCRE_SPTR16 subject, int length, int start_offset, int options,
int *offsets, int offset_count, pcre16_jit_stack *stack)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_jit_exec(const pcre32 *argument_re, const pcre32_extra *extra_data,
PCRE_SPTR32 subject, int length, int start_offset, int options,
int *offsets, int offset_count, pcre32_jit_stack *stack)
#endif
{
pcre_uchar *subject_ptr = (pcre_uchar *)subject;
executable_functions *functions = (executable_functions *)extra_data->executable_jit;
union {
void *executable_func;
jit_function call_executable_func;
} convert_executable_func;
jit_arguments arguments;
int max_offset_count;
int retval;
int mode = JIT_COMPILE;
SLJIT_UNUSED_ARG(argument_re);
/* Plausibility checks */
if ((options & ~PUBLIC_JIT_EXEC_OPTIONS) != 0) return PCRE_ERROR_JIT_BADOPTION;
if ((options & PCRE_PARTIAL_HARD) != 0)
mode = JIT_PARTIAL_HARD_COMPILE;
else if ((options & PCRE_PARTIAL_SOFT) != 0)
mode = JIT_PARTIAL_SOFT_COMPILE;
if (functions == NULL || functions->executable_funcs[mode] == NULL)
return PCRE_ERROR_JIT_BADOPTION;
/* Sanity checks should be handled by pcre_exec. */
arguments.stack = (struct sljit_stack *)stack;
arguments.str = subject_ptr + start_offset;
arguments.begin = subject_ptr;
arguments.end = subject_ptr + length;
arguments.mark_ptr = NULL;
/* JIT decreases this value less frequently than the interpreter. */
arguments.limit_match = ((extra_data->flags & PCRE_EXTRA_MATCH_LIMIT) == 0) ? MATCH_LIMIT : (sljit_u32)(extra_data->match_limit);
if (functions->limit_match != 0 && functions->limit_match < arguments.limit_match)
arguments.limit_match = functions->limit_match;
arguments.notbol = (options & PCRE_NOTBOL) != 0;
arguments.noteol = (options & PCRE_NOTEOL) != 0;
arguments.notempty = (options & PCRE_NOTEMPTY) != 0;
arguments.notempty_atstart = (options & PCRE_NOTEMPTY_ATSTART) != 0;
arguments.offsets = offsets;
arguments.callout_data = (extra_data->flags & PCRE_EXTRA_CALLOUT_DATA) != 0 ? extra_data->callout_data : NULL;
arguments.real_offset_count = offset_count;
/* pcre_exec() rounds offset_count to a multiple of 3, and then uses only 2/3 of
the output vector for storing captured strings, with the remainder used as
workspace. We don't need the workspace here. For compatibility, we limit the
number of captured strings in the same way as pcre_exec(), so that the user
gets the same result with and without JIT. */
if (offset_count != 2)
offset_count = ((offset_count - (offset_count % 3)) * 2) / 3;
max_offset_count = functions->top_bracket;
if (offset_count > max_offset_count)
offset_count = max_offset_count;
arguments.offset_count = offset_count;
convert_executable_func.executable_func = functions->executable_funcs[mode];
retval = convert_executable_func.call_executable_func(&arguments);
if (retval * 2 > offset_count)
retval = 0;
if ((extra_data->flags & PCRE_EXTRA_MARK) != 0)
*(extra_data->mark) = arguments.mark_ptr;
return retval;
}
void
PRIV(jit_free)(void *executable_funcs)
{
int i;
executable_functions *functions = (executable_functions *)executable_funcs;
for (i = 0; i < JIT_NUMBER_OF_COMPILE_MODES; i++)
{
if (functions->executable_funcs[i] != NULL)
sljit_free_code(functions->executable_funcs[i]);
free_read_only_data(functions->read_only_data_heads[i], NULL);
}
SLJIT_FREE(functions, compiler->allocator_data);
}
int
PRIV(jit_get_size)(void *executable_funcs)
{
int i;
sljit_uw size = 0;
sljit_uw *executable_sizes = ((executable_functions *)executable_funcs)->executable_sizes;
for (i = 0; i < JIT_NUMBER_OF_COMPILE_MODES; i++)
size += executable_sizes[i];
return (int)size;
}
const char*
PRIV(jit_get_target)(void)
{
return sljit_get_platform_name();
}
#if defined COMPILE_PCRE8
PCRE_EXP_DECL pcre_jit_stack *
pcre_jit_stack_alloc(int startsize, int maxsize)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL pcre16_jit_stack *
pcre16_jit_stack_alloc(int startsize, int maxsize)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL pcre32_jit_stack *
pcre32_jit_stack_alloc(int startsize, int maxsize)
#endif
{
if (startsize < 1 || maxsize < 1)
return NULL;
if (startsize > maxsize)
startsize = maxsize;
startsize = (startsize + STACK_GROWTH_RATE - 1) & ~(STACK_GROWTH_RATE - 1);
maxsize = (maxsize + STACK_GROWTH_RATE - 1) & ~(STACK_GROWTH_RATE - 1);
return (PUBL(jit_stack)*)sljit_allocate_stack(startsize, maxsize, NULL);
}
#if defined COMPILE_PCRE8
PCRE_EXP_DECL void
pcre_jit_stack_free(pcre_jit_stack *stack)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL void
pcre16_jit_stack_free(pcre16_jit_stack *stack)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL void
pcre32_jit_stack_free(pcre32_jit_stack *stack)
#endif
{
sljit_free_stack((struct sljit_stack *)stack, NULL);
}
#if defined COMPILE_PCRE8
PCRE_EXP_DECL void
pcre_assign_jit_stack(pcre_extra *extra, pcre_jit_callback callback, void *userdata)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL void
pcre16_assign_jit_stack(pcre16_extra *extra, pcre16_jit_callback callback, void *userdata)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL void
pcre32_assign_jit_stack(pcre32_extra *extra, pcre32_jit_callback callback, void *userdata)
#endif
{
executable_functions *functions;
if (extra != NULL &&
(extra->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
extra->executable_jit != NULL)
{
functions = (executable_functions *)extra->executable_jit;
functions->callback = callback;
functions->userdata = userdata;
}
}
#if defined COMPILE_PCRE8
PCRE_EXP_DECL void
pcre_jit_free_unused_memory(void)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL void
pcre16_jit_free_unused_memory(void)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL void
pcre32_jit_free_unused_memory(void)
#endif
{
sljit_free_unused_memory_exec();
}
#else /* SUPPORT_JIT */
/* These are dummy functions to avoid linking errors when JIT support is not
being compiled. */
#if defined COMPILE_PCRE8
PCRE_EXP_DECL pcre_jit_stack *
pcre_jit_stack_alloc(int startsize, int maxsize)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL pcre16_jit_stack *
pcre16_jit_stack_alloc(int startsize, int maxsize)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL pcre32_jit_stack *
pcre32_jit_stack_alloc(int startsize, int maxsize)
#endif
{
(void)startsize;
(void)maxsize;
return NULL;
}
#if defined COMPILE_PCRE8
PCRE_EXP_DECL void
pcre_jit_stack_free(pcre_jit_stack *stack)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL void
pcre16_jit_stack_free(pcre16_jit_stack *stack)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL void
pcre32_jit_stack_free(pcre32_jit_stack *stack)
#endif
{
(void)stack;
}
#if defined COMPILE_PCRE8
PCRE_EXP_DECL void
pcre_assign_jit_stack(pcre_extra *extra, pcre_jit_callback callback, void *userdata)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL void
pcre16_assign_jit_stack(pcre16_extra *extra, pcre16_jit_callback callback, void *userdata)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL void
pcre32_assign_jit_stack(pcre32_extra *extra, pcre32_jit_callback callback, void *userdata)
#endif
{
(void)extra;
(void)callback;
(void)userdata;
}
#if defined COMPILE_PCRE8
PCRE_EXP_DECL void
pcre_jit_free_unused_memory(void)
#elif defined COMPILE_PCRE16
PCRE_EXP_DECL void
pcre16_jit_free_unused_memory(void)
#elif defined COMPILE_PCRE32
PCRE_EXP_DECL void
pcre32_jit_free_unused_memory(void)
#endif
{
}
#endif
/* End of pcre_jit_compile.c */
|
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_compile.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2020 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains the external function pcre_compile(), along with
supporting internal functions that are not used by other modules. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define NLBLOCK cd /* Block containing newline information */
#define PSSTART start_pattern /* Field containing pattern start */
#define PSEND end_pattern /* Field containing pattern end */
#include "pcre_internal.h"
/* When PCRE_DEBUG is defined, we need the pcre(16|32)_printint() function, which
is also used by pcretest. PCRE_DEBUG is not defined when building a production
library. We do not need to select pcre16_printint.c specially, because the
COMPILE_PCREx macro will already be appropriately set. */
#ifdef PCRE_DEBUG
/* pcre_printint.c should not include any headers */
#define PCRE_INCLUDED
#include "pcre_printint.c"
#undef PCRE_INCLUDED
#endif
/* Macro for setting individual bits in class bitmaps. */
#define SETBIT(a,b) a[(b)/8] |= (1U << ((b)&7))
/* Maximum length value to check against when making sure that the integer that
holds the compiled pattern length does not overflow. We make it a bit less than
INT_MAX to allow for adding in group terminating bytes, so that we don't have
to check them every time. */
#define OFLOW_MAX (INT_MAX - 20)
/* Definitions to allow mutual recursion */
static int
add_list_to_class(pcre_uint8 *, pcre_uchar **, int, compile_data *,
const pcre_uint32 *, unsigned int);
static BOOL
compile_regex(int, pcre_uchar **, const pcre_uchar **, int *, BOOL, BOOL, int, int,
pcre_uint32 *, pcre_int32 *, pcre_uint32 *, pcre_int32 *, branch_chain *,
compile_data *, int *);
/*************************************************
* Code parameters and static tables *
*************************************************/
/* This value specifies the size of stack workspace that is used during the
first pre-compile phase that determines how much memory is required. The regex
is partly compiled into this space, but the compiled parts are discarded as
soon as they can be, so that hopefully there will never be an overrun. The code
does, however, check for an overrun. The largest amount I've seen used is 218,
so this number is very generous.
The same workspace is used during the second, actual compile phase for
remembering forward references to groups so that they can be filled in at the
end. Each entry in this list occupies LINK_SIZE bytes, so even when LINK_SIZE
is 4 there is plenty of room for most patterns. However, the memory can get
filled up by repetitions of forward references, for example patterns like
/(?1){0,1999}(b)/, and one user did hit the limit. The code has been changed so
that the workspace is expanded using malloc() in this situation. The value
below is therefore a minimum, and we put a maximum on it for safety. The
minimum is now also defined in terms of LINK_SIZE so that the use of malloc()
kicks in at the same number of forward references in all cases. */
#define COMPILE_WORK_SIZE (2048*LINK_SIZE)
#define COMPILE_WORK_SIZE_MAX (100*COMPILE_WORK_SIZE)
/* This value determines the size of the initial vector that is used for
remembering named groups during the pre-compile. It is allocated on the stack,
but if it is too small, it is expanded using malloc(), in a similar way to the
workspace. The value is the number of slots in the list. */
#define NAMED_GROUP_LIST_SIZE 20
/* The overrun tests check for a slightly smaller size so that they detect the
overrun before it actually does run off the end of the data block. */
#define WORK_SIZE_SAFETY_MARGIN (100)
/* Private flags added to firstchar and reqchar. */
#define REQ_CASELESS (1U << 0) /* Indicates caselessness */
#define REQ_VARY (1U << 1) /* Reqchar followed non-literal item */
/* Negative values for the firstchar and reqchar flags */
#define REQ_UNSET (-2)
#define REQ_NONE (-1)
/* Repeated character flags. */
#define UTF_LENGTH 0x10000000l /* The char contains its length. */
/* Table for handling escaped characters in the range '0'-'z'. Positive returns
are simple data values; negative values are for special things like \d and so
on. Zero means further processing is needed (for things like \x), or the escape
is invalid. */
#ifndef EBCDIC
/* This is the "normal" table for ASCII systems or for EBCDIC systems running
in UTF-8 mode. */
static const short int escapes[] = {
0, 0,
0, 0,
0, 0,
0, 0,
0, 0,
CHAR_COLON, CHAR_SEMICOLON,
CHAR_LESS_THAN_SIGN, CHAR_EQUALS_SIGN,
CHAR_GREATER_THAN_SIGN, CHAR_QUESTION_MARK,
CHAR_COMMERCIAL_AT, -ESC_A,
-ESC_B, -ESC_C,
-ESC_D, -ESC_E,
0, -ESC_G,
-ESC_H, 0,
0, -ESC_K,
0, 0,
-ESC_N, 0,
-ESC_P, -ESC_Q,
-ESC_R, -ESC_S,
0, 0,
-ESC_V, -ESC_W,
-ESC_X, 0,
-ESC_Z, CHAR_LEFT_SQUARE_BRACKET,
CHAR_BACKSLASH, CHAR_RIGHT_SQUARE_BRACKET,
CHAR_CIRCUMFLEX_ACCENT, CHAR_UNDERSCORE,
CHAR_GRAVE_ACCENT, ESC_a,
-ESC_b, 0,
-ESC_d, ESC_e,
ESC_f, 0,
-ESC_h, 0,
0, -ESC_k,
0, 0,
ESC_n, 0,
-ESC_p, 0,
ESC_r, -ESC_s,
ESC_tee, 0,
-ESC_v, -ESC_w,
0, 0,
-ESC_z
};
#else
/* This is the "abnormal" table for EBCDIC systems without UTF-8 support. */
static const short int escapes[] = {
/* 48 */ 0, 0, 0, '.', '<', '(', '+', '|',
/* 50 */ '&', 0, 0, 0, 0, 0, 0, 0,
/* 58 */ 0, 0, '!', '$', '*', ')', ';', '~',
/* 60 */ '-', '/', 0, 0, 0, 0, 0, 0,
/* 68 */ 0, 0, '|', ',', '%', '_', '>', '?',
/* 70 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 78 */ 0, '`', ':', '#', '@', '\'', '=', '"',
/* 80 */ 0, ESC_a, -ESC_b, 0, -ESC_d, ESC_e, ESC_f, 0,
/* 88 */-ESC_h, 0, 0, '{', 0, 0, 0, 0,
/* 90 */ 0, 0, -ESC_k, 0, 0, ESC_n, 0, -ESC_p,
/* 98 */ 0, ESC_r, 0, '}', 0, 0, 0, 0,
/* A0 */ 0, '~', -ESC_s, ESC_tee, 0,-ESC_v, -ESC_w, 0,
/* A8 */ 0,-ESC_z, 0, 0, 0, '[', 0, 0,
/* B0 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* B8 */ 0, 0, 0, 0, 0, ']', '=', '-',
/* C0 */ '{',-ESC_A, -ESC_B, -ESC_C, -ESC_D,-ESC_E, 0, -ESC_G,
/* C8 */-ESC_H, 0, 0, 0, 0, 0, 0, 0,
/* D0 */ '}', 0, -ESC_K, 0, 0,-ESC_N, 0, -ESC_P,
/* D8 */-ESC_Q,-ESC_R, 0, 0, 0, 0, 0, 0,
/* E0 */ '\\', 0, -ESC_S, 0, 0,-ESC_V, -ESC_W, -ESC_X,
/* E8 */ 0,-ESC_Z, 0, 0, 0, 0, 0, 0,
/* F0 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* F8 */ 0, 0, 0, 0, 0, 0, 0, 0
};
/* We also need a table of characters that may follow \c in an EBCDIC
environment for characters 0-31. */
static unsigned char ebcdic_escape_c[] = "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_";
#endif
/* Table of special "verbs" like (*PRUNE). This is a short table, so it is
searched linearly. Put all the names into a single string, in order to reduce
the number of relocations when a shared library is dynamically linked. The
string is built from string macros so that it works in UTF-8 mode on EBCDIC
platforms. */
typedef struct verbitem {
int len; /* Length of verb name */
int op; /* Op when no arg, or -1 if arg mandatory */
int op_arg; /* Op when arg present, or -1 if not allowed */
} verbitem;
static const char verbnames[] =
"\0" /* Empty name is a shorthand for MARK */
STRING_MARK0
STRING_ACCEPT0
STRING_COMMIT0
STRING_F0
STRING_FAIL0
STRING_PRUNE0
STRING_SKIP0
STRING_THEN;
static const verbitem verbs[] = {
{ 0, -1, OP_MARK },
{ 4, -1, OP_MARK },
{ 6, OP_ACCEPT, -1 },
{ 6, OP_COMMIT, -1 },
{ 1, OP_FAIL, -1 },
{ 4, OP_FAIL, -1 },
{ 5, OP_PRUNE, OP_PRUNE_ARG },
{ 4, OP_SKIP, OP_SKIP_ARG },
{ 4, OP_THEN, OP_THEN_ARG }
};
static const int verbcount = sizeof(verbs)/sizeof(verbitem);
/* Substitutes for [[:<:]] and [[:>:]], which mean start and end of word in
another regex library. */
static const pcre_uchar sub_start_of_word[] = {
CHAR_BACKSLASH, CHAR_b, CHAR_LEFT_PARENTHESIS, CHAR_QUESTION_MARK,
CHAR_EQUALS_SIGN, CHAR_BACKSLASH, CHAR_w, CHAR_RIGHT_PARENTHESIS, '\0' };
static const pcre_uchar sub_end_of_word[] = {
CHAR_BACKSLASH, CHAR_b, CHAR_LEFT_PARENTHESIS, CHAR_QUESTION_MARK,
CHAR_LESS_THAN_SIGN, CHAR_EQUALS_SIGN, CHAR_BACKSLASH, CHAR_w,
CHAR_RIGHT_PARENTHESIS, '\0' };
/* Tables of names of POSIX character classes and their lengths. The names are
now all in a single string, to reduce the number of relocations when a shared
library is dynamically loaded. The list of lengths is terminated by a zero
length entry. The first three must be alpha, lower, upper, as this is assumed
for handling case independence. The indices for graph, print, and punct are
needed, so identify them. */
static const char posix_names[] =
STRING_alpha0 STRING_lower0 STRING_upper0 STRING_alnum0
STRING_ascii0 STRING_blank0 STRING_cntrl0 STRING_digit0
STRING_graph0 STRING_print0 STRING_punct0 STRING_space0
STRING_word0 STRING_xdigit;
static const pcre_uint8 posix_name_lengths[] = {
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 6, 0 };
#define PC_GRAPH 8
#define PC_PRINT 9
#define PC_PUNCT 10
/* Table of class bit maps for each POSIX class. Each class is formed from a
base map, with an optional addition or removal of another map. Then, for some
classes, there is some additional tweaking: for [:blank:] the vertical space
characters are removed, and for [:alpha:] and [:alnum:] the underscore
character is removed. The triples in the table consist of the base map offset,
second map offset or -1 if no second map, and a non-negative value for map
addition or a negative value for map subtraction (if there are two maps). The
absolute value of the third field has these meanings: 0 => no tweaking, 1 =>
remove vertical space characters, 2 => remove underscore. */
static const int posix_class_maps[] = {
cbit_word, cbit_digit, -2, /* alpha */
cbit_lower, -1, 0, /* lower */
cbit_upper, -1, 0, /* upper */
cbit_word, -1, 2, /* alnum - word without underscore */
cbit_print, cbit_cntrl, 0, /* ascii */
cbit_space, -1, 1, /* blank - a GNU extension */
cbit_cntrl, -1, 0, /* cntrl */
cbit_digit, -1, 0, /* digit */
cbit_graph, -1, 0, /* graph */
cbit_print, -1, 0, /* print */
cbit_punct, -1, 0, /* punct */
cbit_space, -1, 0, /* space */
cbit_word, -1, 0, /* word - a Perl extension */
cbit_xdigit,-1, 0 /* xdigit */
};
/* Table of substitutes for \d etc when PCRE_UCP is set. They are replaced by
Unicode property escapes. */
#ifdef SUPPORT_UCP
static const pcre_uchar string_PNd[] = {
CHAR_BACKSLASH, CHAR_P, CHAR_LEFT_CURLY_BRACKET,
CHAR_N, CHAR_d, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_pNd[] = {
CHAR_BACKSLASH, CHAR_p, CHAR_LEFT_CURLY_BRACKET,
CHAR_N, CHAR_d, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_PXsp[] = {
CHAR_BACKSLASH, CHAR_P, CHAR_LEFT_CURLY_BRACKET,
CHAR_X, CHAR_s, CHAR_p, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_pXsp[] = {
CHAR_BACKSLASH, CHAR_p, CHAR_LEFT_CURLY_BRACKET,
CHAR_X, CHAR_s, CHAR_p, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_PXwd[] = {
CHAR_BACKSLASH, CHAR_P, CHAR_LEFT_CURLY_BRACKET,
CHAR_X, CHAR_w, CHAR_d, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_pXwd[] = {
CHAR_BACKSLASH, CHAR_p, CHAR_LEFT_CURLY_BRACKET,
CHAR_X, CHAR_w, CHAR_d, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar *substitutes[] = {
string_PNd, /* \D */
string_pNd, /* \d */
string_PXsp, /* \S */ /* Xsp is Perl space, but from 8.34, Perl */
string_pXsp, /* \s */ /* space and POSIX space are the same. */
string_PXwd, /* \W */
string_pXwd /* \w */
};
/* The POSIX class substitutes must be in the order of the POSIX class names,
defined above, and there are both positive and negative cases. NULL means no
general substitute of a Unicode property escape (\p or \P). However, for some
POSIX classes (e.g. graph, print, punct) a special property code is compiled
directly. */
static const pcre_uchar string_pL[] = {
CHAR_BACKSLASH, CHAR_p, CHAR_LEFT_CURLY_BRACKET,
CHAR_L, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_pLl[] = {
CHAR_BACKSLASH, CHAR_p, CHAR_LEFT_CURLY_BRACKET,
CHAR_L, CHAR_l, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_pLu[] = {
CHAR_BACKSLASH, CHAR_p, CHAR_LEFT_CURLY_BRACKET,
CHAR_L, CHAR_u, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_pXan[] = {
CHAR_BACKSLASH, CHAR_p, CHAR_LEFT_CURLY_BRACKET,
CHAR_X, CHAR_a, CHAR_n, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_h[] = {
CHAR_BACKSLASH, CHAR_h, '\0' };
static const pcre_uchar string_pXps[] = {
CHAR_BACKSLASH, CHAR_p, CHAR_LEFT_CURLY_BRACKET,
CHAR_X, CHAR_p, CHAR_s, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_PL[] = {
CHAR_BACKSLASH, CHAR_P, CHAR_LEFT_CURLY_BRACKET,
CHAR_L, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_PLl[] = {
CHAR_BACKSLASH, CHAR_P, CHAR_LEFT_CURLY_BRACKET,
CHAR_L, CHAR_l, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_PLu[] = {
CHAR_BACKSLASH, CHAR_P, CHAR_LEFT_CURLY_BRACKET,
CHAR_L, CHAR_u, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_PXan[] = {
CHAR_BACKSLASH, CHAR_P, CHAR_LEFT_CURLY_BRACKET,
CHAR_X, CHAR_a, CHAR_n, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar string_H[] = {
CHAR_BACKSLASH, CHAR_H, '\0' };
static const pcre_uchar string_PXps[] = {
CHAR_BACKSLASH, CHAR_P, CHAR_LEFT_CURLY_BRACKET,
CHAR_X, CHAR_p, CHAR_s, CHAR_RIGHT_CURLY_BRACKET, '\0' };
static const pcre_uchar *posix_substitutes[] = {
string_pL, /* alpha */
string_pLl, /* lower */
string_pLu, /* upper */
string_pXan, /* alnum */
NULL, /* ascii */
string_h, /* blank */
NULL, /* cntrl */
string_pNd, /* digit */
NULL, /* graph */
NULL, /* print */
NULL, /* punct */
string_pXps, /* space */ /* Xps is POSIX space, but from 8.34 */
string_pXwd, /* word */ /* Perl and POSIX space are the same */
NULL, /* xdigit */
/* Negated cases */
string_PL, /* ^alpha */
string_PLl, /* ^lower */
string_PLu, /* ^upper */
string_PXan, /* ^alnum */
NULL, /* ^ascii */
string_H, /* ^blank */
NULL, /* ^cntrl */
string_PNd, /* ^digit */
NULL, /* ^graph */
NULL, /* ^print */
NULL, /* ^punct */
string_PXps, /* ^space */ /* Xps is POSIX space, but from 8.34 */
string_PXwd, /* ^word */ /* Perl and POSIX space are the same */
NULL /* ^xdigit */
};
#define POSIX_SUBSIZE (sizeof(posix_substitutes) / sizeof(pcre_uchar *))
#endif
#define STRING(a) # a
#define XSTRING(s) STRING(s)
/* The texts of compile-time error messages. These are "char *" because they
are passed to the outside world. Do not ever re-use any error number, because
they are documented. Always add a new error instead. Messages marked DEAD below
are no longer used. This used to be a table of strings, but in order to reduce
the number of relocations needed when a shared library is loaded dynamically,
it is now one long string. We cannot use a table of offsets, because the
lengths of inserts such as XSTRING(MAX_NAME_SIZE) are not known. Instead, we
simply count through to the one we want - this isn't a performance issue
because these strings are used only when there is a compilation error.
Each substring ends with \0 to insert a null character. This includes the final
substring, so that the whole string ends with \0\0, which can be detected when
counting through. */
static const char error_texts[] =
"no error\0"
"\\ at end of pattern\0"
"\\c at end of pattern\0"
"unrecognized character follows \\\0"
"numbers out of order in {} quantifier\0"
/* 5 */
"number too big in {} quantifier\0"
"missing terminating ] for character class\0"
"invalid escape sequence in character class\0"
"range out of order in character class\0"
"nothing to repeat\0"
/* 10 */
"internal error: invalid forward reference offset\0"
"internal error: unexpected repeat\0"
"unrecognized character after (? or (?-\0"
"POSIX named classes are supported only within a class\0"
"missing )\0"
/* 15 */
"reference to non-existent subpattern\0"
"erroffset passed as NULL\0"
"unknown option bit(s) set\0"
"missing ) after comment\0"
"parentheses nested too deeply\0" /** DEAD **/
/* 20 */
"regular expression is too large\0"
"failed to get memory\0"
"unmatched parentheses\0"
"internal error: code overflow\0"
"unrecognized character after (?<\0"
/* 25 */
"lookbehind assertion is not fixed length\0"
"malformed number or name after (?(\0"
"conditional group contains more than two branches\0"
"assertion expected after (?( or (?(?C)\0"
"(?R or (?[+-]digits must be followed by )\0"
/* 30 */
"unknown POSIX class name\0"
"POSIX collating elements are not supported\0"
"this version of PCRE is compiled without UTF support\0"
"spare error\0" /** DEAD **/
"character value in \\x{} or \\o{} is too large\0"
/* 35 */
"invalid condition (?(0)\0"
"\\C not allowed in lookbehind assertion\0"
"PCRE does not support \\L, \\l, \\N{name}, \\U, or \\u\0"
"number after (?C is > 255\0"
"closing ) for (?C expected\0"
/* 40 */
"recursive call could loop indefinitely\0"
"unrecognized character after (?P\0"
"syntax error in subpattern name (missing terminator)\0"
"two named subpatterns have the same name\0"
"invalid UTF-8 string\0"
/* 45 */
"support for \\P, \\p, and \\X has not been compiled\0"
"malformed \\P or \\p sequence\0"
"unknown property name after \\P or \\p\0"
"subpattern name is too long (maximum " XSTRING(MAX_NAME_SIZE) " characters)\0"
"too many named subpatterns (maximum " XSTRING(MAX_NAME_COUNT) ")\0"
/* 50 */
"repeated subpattern is too long\0" /** DEAD **/
"octal value is greater than \\377 in 8-bit non-UTF-8 mode\0"
"internal error: overran compiling workspace\0"
"internal error: previously-checked referenced subpattern not found\0"
"DEFINE group contains more than one branch\0"
/* 55 */
"repeating a DEFINE group is not allowed\0" /** DEAD **/
"inconsistent NEWLINE options\0"
"\\g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number\0"
"a numbered reference must not be zero\0"
"an argument is not allowed for (*ACCEPT), (*FAIL), or (*COMMIT)\0"
/* 60 */
"(*VERB) not recognized or malformed\0"
"number is too big\0"
"subpattern name expected\0"
"digit expected after (?+\0"
"] is an invalid data character in JavaScript compatibility mode\0"
/* 65 */
"different names for subpatterns of the same number are not allowed\0"
"(*MARK) must have an argument\0"
"this version of PCRE is not compiled with Unicode property support\0"
#ifndef EBCDIC
"\\c must be followed by an ASCII character\0"
#else
"\\c must be followed by a letter or one of [\\]^_?\0"
#endif
"\\k is not followed by a braced, angle-bracketed, or quoted name\0"
/* 70 */
"internal error: unknown opcode in find_fixedlength()\0"
"\\N is not supported in a class\0"
"too many forward references\0"
"disallowed Unicode code point (>= 0xd800 && <= 0xdfff)\0"
"invalid UTF-16 string\0"
/* 75 */
"name is too long in (*MARK), (*PRUNE), (*SKIP), or (*THEN)\0"
"character value in \\u.... sequence is too large\0"
"invalid UTF-32 string\0"
"setting UTF is disabled by the application\0"
"non-hex character in \\x{} (closing brace missing?)\0"
/* 80 */
"non-octal character in \\o{} (closing brace missing?)\0"
"missing opening brace after \\o\0"
"parentheses are too deeply nested\0"
"invalid range in character class\0"
"group name must start with a non-digit\0"
/* 85 */
"parentheses are too deeply nested (stack check)\0"
"digits missing in \\x{} or \\o{}\0"
"regular expression is too complicated\0"
;
/* Table to identify digits and hex digits. This is used when compiling
patterns. Note that the tables in chartables are dependent on the locale, and
may mark arbitrary characters as digits - but the PCRE compiling code expects
to handle only 0-9, a-z, and A-Z as digits when compiling. That is why we have
a private table here. It costs 256 bytes, but it is a lot faster than doing
character value tests (at least in some simple cases I timed), and in some
applications one wants PCRE to compile efficiently as well as match
efficiently.
For convenience, we use the same bit definitions as in chartables:
0x04 decimal digit
0x08 hexadecimal digit
Then we can use ctype_digit and ctype_xdigit in the code. */
/* Using a simple comparison for decimal numbers rather than a memory read
is much faster, and the resulting code is simpler (the compiler turns it
into a subtraction and unsigned comparison). */
#define IS_DIGIT(x) ((x) >= CHAR_0 && (x) <= CHAR_9)
#ifndef EBCDIC
/* This is the "normal" case, for ASCII systems, and EBCDIC systems running in
UTF-8 mode. */
static const pcre_uint8 digitab[] =
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 0- 7 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 8- 15 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 16- 23 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 24- 31 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* - ' */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* ( - / */
0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c, /* 0 - 7 */
0x0c,0x0c,0x00,0x00,0x00,0x00,0x00,0x00, /* 8 - ? */
0x00,0x08,0x08,0x08,0x08,0x08,0x08,0x00, /* @ - G */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* H - O */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* P - W */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* X - _ */
0x00,0x08,0x08,0x08,0x08,0x08,0x08,0x00, /* ` - g */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* h - o */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* p - w */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* x -127 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 128-135 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 136-143 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 144-151 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 152-159 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 160-167 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 168-175 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 176-183 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 184-191 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 192-199 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 200-207 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 208-215 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 216-223 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 224-231 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 232-239 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 240-247 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};/* 248-255 */
#else
/* This is the "abnormal" case, for EBCDIC systems not running in UTF-8 mode. */
static const pcre_uint8 digitab[] =
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 0- 7 0 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 8- 15 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 16- 23 10 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 24- 31 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 32- 39 20 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 40- 47 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 48- 55 30 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 56- 63 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* - 71 40 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 72- | */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* & - 87 50 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 88- 95 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* - -103 60 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 104- ? */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 112-119 70 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 120- " */
0x00,0x08,0x08,0x08,0x08,0x08,0x08,0x00, /* 128- g 80 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* h -143 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 144- p 90 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* q -159 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 160- x A0 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* y -175 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* ^ -183 B0 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 184-191 */
0x00,0x08,0x08,0x08,0x08,0x08,0x08,0x00, /* { - G C0 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* H -207 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* } - P D0 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* Q -223 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* \ - X E0 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* Y -239 */
0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c, /* 0 - 7 F0 */
0x0c,0x0c,0x00,0x00,0x00,0x00,0x00,0x00};/* 8 -255 */
static const pcre_uint8 ebcdic_chartab[] = { /* chartable partial dup */
0x80,0x00,0x00,0x00,0x00,0x01,0x00,0x00, /* 0- 7 */
0x00,0x00,0x00,0x00,0x01,0x01,0x00,0x00, /* 8- 15 */
0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x00, /* 16- 23 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 24- 31 */
0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x00, /* 32- 39 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 40- 47 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 48- 55 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 56- 63 */
0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* - 71 */
0x00,0x00,0x00,0x80,0x00,0x80,0x80,0x80, /* 72- | */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* & - 87 */
0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00, /* 88- 95 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* - -103 */
0x00,0x00,0x00,0x00,0x00,0x10,0x00,0x80, /* 104- ? */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 112-119 */
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* 120- " */
0x00,0x1a,0x1a,0x1a,0x1a,0x1a,0x1a,0x12, /* 128- g */
0x12,0x12,0x00,0x00,0x00,0x00,0x00,0x00, /* h -143 */
0x00,0x12,0x12,0x12,0x12,0x12,0x12,0x12, /* 144- p */
0x12,0x12,0x00,0x00,0x00,0x00,0x00,0x00, /* q -159 */
0x00,0x00,0x12,0x12,0x12,0x12,0x12,0x12, /* 160- x */
0x12,0x12,0x00,0x00,0x00,0x00,0x00,0x00, /* y -175 */
0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00, /* ^ -183 */
0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00, /* 184-191 */
0x80,0x1a,0x1a,0x1a,0x1a,0x1a,0x1a,0x12, /* { - G */
0x12,0x12,0x00,0x00,0x00,0x00,0x00,0x00, /* H -207 */
0x00,0x12,0x12,0x12,0x12,0x12,0x12,0x12, /* } - P */
0x12,0x12,0x00,0x00,0x00,0x00,0x00,0x00, /* Q -223 */
0x00,0x00,0x12,0x12,0x12,0x12,0x12,0x12, /* \ - X */
0x12,0x12,0x00,0x00,0x00,0x00,0x00,0x00, /* Y -239 */
0x1c,0x1c,0x1c,0x1c,0x1c,0x1c,0x1c,0x1c, /* 0 - 7 */
0x1c,0x1c,0x00,0x00,0x00,0x00,0x00,0x00};/* 8 -255 */
#endif
/* This table is used to check whether auto-possessification is possible
between adjacent character-type opcodes. The left-hand (repeated) opcode is
used to select the row, and the right-hand opcode is use to select the column.
A value of 1 means that auto-possessification is OK. For example, the second
value in the first row means that \D+\d can be turned into \D++\d.
The Unicode property types (\P and \p) have to be present to fill out the table
because of what their opcode values are, but the table values should always be
zero because property types are handled separately in the code. The last four
columns apply to items that cannot be repeated, so there is no need to have
rows for them. Note that OP_DIGIT etc. are generated only when PCRE_UCP is
*not* set. When it is set, \d etc. are converted into OP_(NOT_)PROP codes. */
#define APTROWS (LAST_AUTOTAB_LEFT_OP - FIRST_AUTOTAB_OP + 1)
#define APTCOLS (LAST_AUTOTAB_RIGHT_OP - FIRST_AUTOTAB_OP + 1)
static const pcre_uint8 autoposstab[APTROWS][APTCOLS] = {
/* \D \d \S \s \W \w . .+ \C \P \p \R \H \h \V \v \X \Z \z $ $M */
{ 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, /* \D */
{ 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1 }, /* \d */
{ 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1 }, /* \S */
{ 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, /* \s */
{ 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, /* \W */
{ 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1 }, /* \w */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, /* . */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, /* .+ */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 }, /* \C */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* \P */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* \p */
{ 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0 }, /* \R */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0 }, /* \H */
{ 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0 }, /* \h */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0 }, /* \V */
{ 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0 }, /* \v */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 } /* \X */
};
/* This table is used to check whether auto-possessification is possible
between adjacent Unicode property opcodes (OP_PROP and OP_NOTPROP). The
left-hand (repeated) opcode is used to select the row, and the right-hand
opcode is used to select the column. The values are as follows:
0 Always return FALSE (never auto-possessify)
1 Character groups are distinct (possessify if both are OP_PROP)
2 Check character categories in the same group (general or particular)
3 TRUE if the two opcodes are not the same (PROP vs NOTPROP)
4 Check left general category vs right particular category
5 Check right general category vs left particular category
6 Left alphanum vs right general category
7 Left space vs right general category
8 Left word vs right general category
9 Right alphanum vs left general category
10 Right space vs left general category
11 Right word vs left general category
12 Left alphanum vs right particular category
13 Left space vs right particular category
14 Left word vs right particular category
15 Right alphanum vs left particular category
16 Right space vs left particular category
17 Right word vs left particular category
*/
static const pcre_uint8 propposstab[PT_TABSIZE][PT_TABSIZE] = {
/* ANY LAMP GC PC SC ALNUM SPACE PXSPACE WORD CLIST UCNC */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* PT_ANY */
{ 0, 3, 0, 0, 0, 3, 1, 1, 0, 0, 0 }, /* PT_LAMP */
{ 0, 0, 2, 4, 0, 9, 10, 10, 11, 0, 0 }, /* PT_GC */
{ 0, 0, 5, 2, 0, 15, 16, 16, 17, 0, 0 }, /* PT_PC */
{ 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0 }, /* PT_SC */
{ 0, 3, 6, 12, 0, 3, 1, 1, 0, 0, 0 }, /* PT_ALNUM */
{ 0, 1, 7, 13, 0, 1, 3, 3, 1, 0, 0 }, /* PT_SPACE */
{ 0, 1, 7, 13, 0, 1, 3, 3, 1, 0, 0 }, /* PT_PXSPACE */
{ 0, 0, 8, 14, 0, 0, 1, 1, 3, 0, 0 }, /* PT_WORD */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* PT_CLIST */
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3 } /* PT_UCNC */
};
/* This table is used to check whether auto-possessification is possible
between adjacent Unicode property opcodes (OP_PROP and OP_NOTPROP) when one
specifies a general category and the other specifies a particular category. The
row is selected by the general category and the column by the particular
category. The value is 1 if the particular category is not part of the general
category. */
static const pcre_uint8 catposstab[7][30] = {
/* Cc Cf Cn Co Cs Ll Lm Lo Lt Lu Mc Me Mn Nd Nl No Pc Pd Pe Pf Pi Po Ps Sc Sk Sm So Zl Zp Zs */
{ 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* C */
{ 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* L */
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* M */
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* N */
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1 }, /* P */
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1 }, /* S */
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0 } /* Z */
};
/* This table is used when checking ALNUM, (PX)SPACE, SPACE, and WORD against
a general or particular category. The properties in each row are those
that apply to the character set in question. Duplication means that a little
unnecessary work is done when checking, but this keeps things much simpler
because they can all use the same code. For more details see the comment where
this table is used.
Note: SPACE and PXSPACE used to be different because Perl excluded VT from
"space", but from Perl 5.18 it's included, so both categories are treated the
same here. */
static const pcre_uint8 posspropstab[3][4] = {
{ ucp_L, ucp_N, ucp_N, ucp_Nl }, /* ALNUM, 3rd and 4th values redundant */
{ ucp_Z, ucp_Z, ucp_C, ucp_Cc }, /* SPACE and PXSPACE, 2nd value redundant */
{ ucp_L, ucp_N, ucp_P, ucp_Po } /* WORD */
};
/* This table is used when converting repeating opcodes into possessified
versions as a result of an explicit possessive quantifier such as ++. A zero
value means there is no possessified version - in those cases the item in
question must be wrapped in ONCE brackets. The table is truncated at OP_CALLOUT
because all relevant opcodes are less than that. */
static const pcre_uint8 opcode_possessify[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0 - 15 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 16 - 31 */
0, /* NOTI */
OP_POSSTAR, 0, /* STAR, MINSTAR */
OP_POSPLUS, 0, /* PLUS, MINPLUS */
OP_POSQUERY, 0, /* QUERY, MINQUERY */
OP_POSUPTO, 0, /* UPTO, MINUPTO */
0, /* EXACT */
0, 0, 0, 0, /* POS{STAR,PLUS,QUERY,UPTO} */
OP_POSSTARI, 0, /* STARI, MINSTARI */
OP_POSPLUSI, 0, /* PLUSI, MINPLUSI */
OP_POSQUERYI, 0, /* QUERYI, MINQUERYI */
OP_POSUPTOI, 0, /* UPTOI, MINUPTOI */
0, /* EXACTI */
0, 0, 0, 0, /* POS{STARI,PLUSI,QUERYI,UPTOI} */
OP_NOTPOSSTAR, 0, /* NOTSTAR, NOTMINSTAR */
OP_NOTPOSPLUS, 0, /* NOTPLUS, NOTMINPLUS */
OP_NOTPOSQUERY, 0, /* NOTQUERY, NOTMINQUERY */
OP_NOTPOSUPTO, 0, /* NOTUPTO, NOTMINUPTO */
0, /* NOTEXACT */
0, 0, 0, 0, /* NOTPOS{STAR,PLUS,QUERY,UPTO} */
OP_NOTPOSSTARI, 0, /* NOTSTARI, NOTMINSTARI */
OP_NOTPOSPLUSI, 0, /* NOTPLUSI, NOTMINPLUSI */
OP_NOTPOSQUERYI, 0, /* NOTQUERYI, NOTMINQUERYI */
OP_NOTPOSUPTOI, 0, /* NOTUPTOI, NOTMINUPTOI */
0, /* NOTEXACTI */
0, 0, 0, 0, /* NOTPOS{STARI,PLUSI,QUERYI,UPTOI} */
OP_TYPEPOSSTAR, 0, /* TYPESTAR, TYPEMINSTAR */
OP_TYPEPOSPLUS, 0, /* TYPEPLUS, TYPEMINPLUS */
OP_TYPEPOSQUERY, 0, /* TYPEQUERY, TYPEMINQUERY */
OP_TYPEPOSUPTO, 0, /* TYPEUPTO, TYPEMINUPTO */
0, /* TYPEEXACT */
0, 0, 0, 0, /* TYPEPOS{STAR,PLUS,QUERY,UPTO} */
OP_CRPOSSTAR, 0, /* CRSTAR, CRMINSTAR */
OP_CRPOSPLUS, 0, /* CRPLUS, CRMINPLUS */
OP_CRPOSQUERY, 0, /* CRQUERY, CRMINQUERY */
OP_CRPOSRANGE, 0, /* CRRANGE, CRMINRANGE */
0, 0, 0, 0, /* CRPOS{STAR,PLUS,QUERY,RANGE} */
0, 0, 0, /* CLASS, NCLASS, XCLASS */
0, 0, /* REF, REFI */
0, 0, /* DNREF, DNREFI */
0, 0 /* RECURSE, CALLOUT */
};
/*************************************************
* Find an error text *
*************************************************/
/* The error texts are now all in one long string, to save on relocations. As
some of the text is of unknown length, we can't use a table of offsets.
Instead, just count through the strings. This is not a performance issue
because it happens only when there has been a compilation error.
Argument: the error number
Returns: pointer to the error string
*/
static const char *
find_error_text(int n)
{
const char *s = error_texts;
for (; n > 0; n--)
{
while (*s++ != CHAR_NULL) {};
if (*s == CHAR_NULL) return "Error text not found (please report)";
}
return s;
}
/*************************************************
* Expand the workspace *
*************************************************/
/* This function is called during the second compiling phase, if the number of
forward references fills the existing workspace, which is originally a block on
the stack. A larger block is obtained from malloc() unless the ultimate limit
has been reached or the increase will be rather small.
Argument: pointer to the compile data block
Returns: 0 if all went well, else an error number
*/
static int
expand_workspace(compile_data *cd)
{
pcre_uchar *newspace;
int newsize = cd->workspace_size * 2;
if (newsize > COMPILE_WORK_SIZE_MAX) newsize = COMPILE_WORK_SIZE_MAX;
if (cd->workspace_size >= COMPILE_WORK_SIZE_MAX ||
newsize - cd->workspace_size < WORK_SIZE_SAFETY_MARGIN)
return ERR72;
newspace = (PUBL(malloc))(IN_UCHARS(newsize));
if (newspace == NULL) return ERR21;
memcpy(newspace, cd->start_workspace, cd->workspace_size * sizeof(pcre_uchar));
cd->hwm = (pcre_uchar *)newspace + (cd->hwm - cd->start_workspace);
if (cd->workspace_size > COMPILE_WORK_SIZE)
(PUBL(free))((void *)cd->start_workspace);
cd->start_workspace = newspace;
cd->workspace_size = newsize;
return 0;
}
/*************************************************
* Check for counted repeat *
*************************************************/
/* This function is called when a '{' is encountered in a place where it might
start a quantifier. It looks ahead to see if it really is a quantifier or not.
It is only a quantifier if it is one of the forms {ddd} {ddd,} or {ddd,ddd}
where the ddds are digits.
Arguments:
p pointer to the first char after '{'
Returns: TRUE or FALSE
*/
static BOOL
is_counted_repeat(const pcre_uchar *p)
{
if (!IS_DIGIT(*p)) return FALSE;
p++;
while (IS_DIGIT(*p)) p++;
if (*p == CHAR_RIGHT_CURLY_BRACKET) return TRUE;
if (*p++ != CHAR_COMMA) return FALSE;
if (*p == CHAR_RIGHT_CURLY_BRACKET) return TRUE;
if (!IS_DIGIT(*p)) return FALSE;
p++;
while (IS_DIGIT(*p)) p++;
return (*p == CHAR_RIGHT_CURLY_BRACKET);
}
/*************************************************
* Handle escapes *
*************************************************/
/* This function is called when a \ has been encountered. It either returns a
positive value for a simple escape such as \n, or 0 for a data character which
will be placed in chptr. A backreference to group n is returned as negative n.
When UTF-8 is enabled, a positive value greater than 255 may be returned in
chptr. On entry, ptr is pointing at the \. On exit, it is on the final
character of the escape sequence.
Arguments:
ptrptr points to the pattern position pointer
chptr points to a returned data character
errorcodeptr points to the errorcode variable
bracount number of previous extracting brackets
options the options bits
isclass TRUE if inside a character class
Returns: zero => a data character
positive => a special escape sequence
negative => a back reference
on error, errorcodeptr is set
*/
static int
check_escape(const pcre_uchar **ptrptr, pcre_uint32 *chptr, int *errorcodeptr,
int bracount, int options, BOOL isclass)
{
/* PCRE_UTF16 has the same value as PCRE_UTF8. */
BOOL utf = (options & PCRE_UTF8) != 0;
const pcre_uchar *ptr = *ptrptr + 1;
pcre_uint32 c;
int escape = 0;
int i;
GETCHARINCTEST(c, ptr); /* Get character value, increment pointer */
ptr--; /* Set pointer back to the last byte */
/* If backslash is at the end of the pattern, it's an error. */
if (c == CHAR_NULL) *errorcodeptr = ERR1;
/* Non-alphanumerics are literals. For digits or letters, do an initial lookup
in a table. A non-zero result is something that can be returned immediately.
Otherwise further processing may be required. */
#ifndef EBCDIC /* ASCII/UTF-8 coding */
/* Not alphanumeric */
else if (c < CHAR_0 || c > CHAR_z) {}
else if ((i = escapes[c - CHAR_0]) != 0)
{ if (i > 0) c = (pcre_uint32)i; else escape = -i; }
#else /* EBCDIC coding */
/* Not alphanumeric */
else if (c < CHAR_a || (!MAX_255(c) || (ebcdic_chartab[c] & 0x0E) == 0)) {}
else if ((i = escapes[c - 0x48]) != 0) { if (i > 0) c = (pcre_uint32)i; else escape = -i; }
#endif
/* Escapes that need further processing, or are illegal. */
else
{
const pcre_uchar *oldptr;
BOOL braced, negated, overflow;
int s;
switch (c)
{
/* A number of Perl escapes are not handled by PCRE. We give an explicit
error. */
case CHAR_l:
case CHAR_L:
*errorcodeptr = ERR37;
break;
case CHAR_u:
if ((options & PCRE_JAVASCRIPT_COMPAT) != 0)
{
/* In JavaScript, \u must be followed by four hexadecimal numbers.
Otherwise it is a lowercase u letter. */
if (MAX_255(ptr[1]) && (digitab[ptr[1]] & ctype_xdigit) != 0
&& MAX_255(ptr[2]) && (digitab[ptr[2]] & ctype_xdigit) != 0
&& MAX_255(ptr[3]) && (digitab[ptr[3]] & ctype_xdigit) != 0
&& MAX_255(ptr[4]) && (digitab[ptr[4]] & ctype_xdigit) != 0)
{
c = 0;
for (i = 0; i < 4; ++i)
{
register pcre_uint32 cc = *(++ptr);
#ifndef EBCDIC /* ASCII/UTF-8 coding */
if (cc >= CHAR_a) cc -= 32; /* Convert to upper case */
c = (c << 4) + cc - ((cc < CHAR_A)? CHAR_0 : (CHAR_A - 10));
#else /* EBCDIC coding */
if (cc >= CHAR_a && cc <= CHAR_z) cc += 64; /* Convert to upper case */
c = (c << 4) + cc - ((cc >= CHAR_0)? CHAR_0 : (CHAR_A - 10));
#endif
}
#if defined COMPILE_PCRE8
if (c > (utf ? 0x10ffffU : 0xffU))
#elif defined COMPILE_PCRE16
if (c > (utf ? 0x10ffffU : 0xffffU))
#elif defined COMPILE_PCRE32
if (utf && c > 0x10ffffU)
#endif
{
*errorcodeptr = ERR76;
}
else if (utf && c >= 0xd800 && c <= 0xdfff) *errorcodeptr = ERR73;
}
}
else
*errorcodeptr = ERR37;
break;
case CHAR_U:
/* In JavaScript, \U is an uppercase U letter. */
if ((options & PCRE_JAVASCRIPT_COMPAT) == 0) *errorcodeptr = ERR37;
break;
/* In a character class, \g is just a literal "g". Outside a character
class, \g must be followed by one of a number of specific things:
(1) A number, either plain or braced. If positive, it is an absolute
backreference. If negative, it is a relative backreference. This is a Perl
5.10 feature.
(2) Perl 5.10 also supports \g{name} as a reference to a named group. This
is part of Perl's movement towards a unified syntax for back references. As
this is synonymous with \k{name}, we fudge it up by pretending it really
was \k.
(3) For Oniguruma compatibility we also support \g followed by a name or a
number either in angle brackets or in single quotes. However, these are
(possibly recursive) subroutine calls, _not_ backreferences. Just return
the ESC_g code (cf \k). */
case CHAR_g:
if (isclass) break;
if (ptr[1] == CHAR_LESS_THAN_SIGN || ptr[1] == CHAR_APOSTROPHE)
{
escape = ESC_g;
break;
}
/* Handle the Perl-compatible cases */
if (ptr[1] == CHAR_LEFT_CURLY_BRACKET)
{
const pcre_uchar *p;
for (p = ptr+2; *p != CHAR_NULL && *p != CHAR_RIGHT_CURLY_BRACKET; p++)
if (*p != CHAR_MINUS && !IS_DIGIT(*p)) break;
if (*p != CHAR_NULL && *p != CHAR_RIGHT_CURLY_BRACKET)
{
escape = ESC_k;
break;
}
braced = TRUE;
ptr++;
}
else braced = FALSE;
if (ptr[1] == CHAR_MINUS)
{
negated = TRUE;
ptr++;
}
else negated = FALSE;
/* The integer range is limited by the machine's int representation. */
s = 0;
overflow = FALSE;
while (IS_DIGIT(ptr[1]))
{
if (s > INT_MAX / 10 - 1) /* Integer overflow */
{
overflow = TRUE;
break;
}
s = s * 10 + (int)(*(++ptr) - CHAR_0);
}
if (overflow) /* Integer overflow */
{
while (IS_DIGIT(ptr[1]))
ptr++;
*errorcodeptr = ERR61;
break;
}
if (braced && *(++ptr) != CHAR_RIGHT_CURLY_BRACKET)
{
*errorcodeptr = ERR57;
break;
}
if (s == 0)
{
*errorcodeptr = ERR58;
break;
}
if (negated)
{
if (s > bracount)
{
*errorcodeptr = ERR15;
break;
}
s = bracount - (s - 1);
}
escape = -s;
break;
/* The handling of escape sequences consisting of a string of digits
starting with one that is not zero is not straightforward. Perl has changed
over the years. Nowadays \g{} for backreferences and \o{} for octal are
recommended to avoid the ambiguities in the old syntax.
Outside a character class, the digits are read as a decimal number. If the
number is less than 8 (used to be 10), or if there are that many previous
extracting left brackets, then it is a back reference. Otherwise, up to
three octal digits are read to form an escaped byte. Thus \123 is likely to
be octal 123 (cf \0123, which is octal 012 followed by the literal 3). If
the octal value is greater than 377, the least significant 8 bits are
taken. \8 and \9 are treated as the literal characters 8 and 9.
Inside a character class, \ followed by a digit is always either a literal
8 or 9 or an octal number. */
case CHAR_1: case CHAR_2: case CHAR_3: case CHAR_4: case CHAR_5:
case CHAR_6: case CHAR_7: case CHAR_8: case CHAR_9:
if (!isclass)
{
oldptr = ptr;
/* The integer range is limited by the machine's int representation. */
s = (int)(c -CHAR_0);
overflow = FALSE;
while (IS_DIGIT(ptr[1]))
{
if (s > INT_MAX / 10 - 1) /* Integer overflow */
{
overflow = TRUE;
break;
}
s = s * 10 + (int)(*(++ptr) - CHAR_0);
}
if (overflow) /* Integer overflow */
{
while (IS_DIGIT(ptr[1]))
ptr++;
*errorcodeptr = ERR61;
break;
}
if (s < 8 || s <= bracount) /* Check for back reference */
{
escape = -s;
break;
}
ptr = oldptr; /* Put the pointer back and fall through */
}
/* Handle a digit following \ when the number is not a back reference. If
the first digit is 8 or 9, Perl used to generate a binary zero byte and
then treat the digit as a following literal. At least by Perl 5.18 this
changed so as not to insert the binary zero. */
if ((c = *ptr) >= CHAR_8) break;
/* Fall through with a digit less than 8 */
/* \0 always starts an octal number, but we may drop through to here with a
larger first octal digit. The original code used just to take the least
significant 8 bits of octal numbers (I think this is what early Perls used
to do). Nowadays we allow for larger numbers in UTF-8 mode and 16-bit mode,
but no more than 3 octal digits. */
case CHAR_0:
c -= CHAR_0;
while(i++ < 2 && ptr[1] >= CHAR_0 && ptr[1] <= CHAR_7)
c = c * 8 + *(++ptr) - CHAR_0;
#ifdef COMPILE_PCRE8
if (!utf && c > 0xff) *errorcodeptr = ERR51;
#endif
break;
/* \o is a relatively new Perl feature, supporting a more general way of
specifying character codes in octal. The only supported form is \o{ddd}. */
case CHAR_o:
if (ptr[1] != CHAR_LEFT_CURLY_BRACKET) *errorcodeptr = ERR81; else
if (ptr[2] == CHAR_RIGHT_CURLY_BRACKET) *errorcodeptr = ERR86; else
{
ptr += 2;
c = 0;
overflow = FALSE;
while (*ptr >= CHAR_0 && *ptr <= CHAR_7)
{
register pcre_uint32 cc = *ptr++;
if (c == 0 && cc == CHAR_0) continue; /* Leading zeroes */
#ifdef COMPILE_PCRE32
if (c >= 0x20000000l) { overflow = TRUE; break; }
#endif
c = (c << 3) + cc - CHAR_0 ;
#if defined COMPILE_PCRE8
if (c > (utf ? 0x10ffffU : 0xffU)) { overflow = TRUE; break; }
#elif defined COMPILE_PCRE16
if (c > (utf ? 0x10ffffU : 0xffffU)) { overflow = TRUE; break; }
#elif defined COMPILE_PCRE32
if (utf && c > 0x10ffffU) { overflow = TRUE; break; }
#endif
}
if (overflow)
{
while (*ptr >= CHAR_0 && *ptr <= CHAR_7) ptr++;
*errorcodeptr = ERR34;
}
else if (*ptr == CHAR_RIGHT_CURLY_BRACKET)
{
if (utf && c >= 0xd800 && c <= 0xdfff) *errorcodeptr = ERR73;
}
else *errorcodeptr = ERR80;
}
break;
/* \x is complicated. In JavaScript, \x must be followed by two hexadecimal
numbers. Otherwise it is a lowercase x letter. */
case CHAR_x:
if ((options & PCRE_JAVASCRIPT_COMPAT) != 0)
{
if (MAX_255(ptr[1]) && (digitab[ptr[1]] & ctype_xdigit) != 0
&& MAX_255(ptr[2]) && (digitab[ptr[2]] & ctype_xdigit) != 0)
{
c = 0;
for (i = 0; i < 2; ++i)
{
register pcre_uint32 cc = *(++ptr);
#ifndef EBCDIC /* ASCII/UTF-8 coding */
if (cc >= CHAR_a) cc -= 32; /* Convert to upper case */
c = (c << 4) + cc - ((cc < CHAR_A)? CHAR_0 : (CHAR_A - 10));
#else /* EBCDIC coding */
if (cc >= CHAR_a && cc <= CHAR_z) cc += 64; /* Convert to upper case */
c = (c << 4) + cc - ((cc >= CHAR_0)? CHAR_0 : (CHAR_A - 10));
#endif
}
}
} /* End JavaScript handling */
/* Handle \x in Perl's style. \x{ddd} is a character number which can be
greater than 0xff in utf or non-8bit mode, but only if the ddd are hex
digits. If not, { used to be treated as a data character. However, Perl
seems to read hex digits up to the first non-such, and ignore the rest, so
that, for example \x{zz} matches a binary zero. This seems crazy, so PCRE
now gives an error. */
else
{
if (ptr[1] == CHAR_LEFT_CURLY_BRACKET)
{
ptr += 2;
if (*ptr == CHAR_RIGHT_CURLY_BRACKET)
{
*errorcodeptr = ERR86;
break;
}
c = 0;
overflow = FALSE;
while (MAX_255(*ptr) && (digitab[*ptr] & ctype_xdigit) != 0)
{
register pcre_uint32 cc = *ptr++;
if (c == 0 && cc == CHAR_0) continue; /* Leading zeroes */
#ifdef COMPILE_PCRE32
if (c >= 0x10000000l) { overflow = TRUE; break; }
#endif
#ifndef EBCDIC /* ASCII/UTF-8 coding */
if (cc >= CHAR_a) cc -= 32; /* Convert to upper case */
c = (c << 4) + cc - ((cc < CHAR_A)? CHAR_0 : (CHAR_A - 10));
#else /* EBCDIC coding */
if (cc >= CHAR_a && cc <= CHAR_z) cc += 64; /* Convert to upper case */
c = (c << 4) + cc - ((cc >= CHAR_0)? CHAR_0 : (CHAR_A - 10));
#endif
#if defined COMPILE_PCRE8
if (c > (utf ? 0x10ffffU : 0xffU)) { overflow = TRUE; break; }
#elif defined COMPILE_PCRE16
if (c > (utf ? 0x10ffffU : 0xffffU)) { overflow = TRUE; break; }
#elif defined COMPILE_PCRE32
if (utf && c > 0x10ffffU) { overflow = TRUE; break; }
#endif
}
if (overflow)
{
while (MAX_255(*ptr) && (digitab[*ptr] & ctype_xdigit) != 0) ptr++;
*errorcodeptr = ERR34;
}
else if (*ptr == CHAR_RIGHT_CURLY_BRACKET)
{
if (utf && c >= 0xd800 && c <= 0xdfff) *errorcodeptr = ERR73;
}
/* If the sequence of hex digits does not end with '}', give an error.
We used just to recognize this construct and fall through to the normal
\x handling, but nowadays Perl gives an error, which seems much more
sensible, so we do too. */
else *errorcodeptr = ERR79;
} /* End of \x{} processing */
/* Read a single-byte hex-defined char (up to two hex digits after \x) */
else
{
c = 0;
while (i++ < 2 && MAX_255(ptr[1]) && (digitab[ptr[1]] & ctype_xdigit) != 0)
{
pcre_uint32 cc; /* Some compilers don't like */
cc = *(++ptr); /* ++ in initializers */
#ifndef EBCDIC /* ASCII/UTF-8 coding */
if (cc >= CHAR_a) cc -= 32; /* Convert to upper case */
c = c * 16 + cc - ((cc < CHAR_A)? CHAR_0 : (CHAR_A - 10));
#else /* EBCDIC coding */
if (cc <= CHAR_z) cc += 64; /* Convert to upper case */
c = c * 16 + cc - ((cc >= CHAR_0)? CHAR_0 : (CHAR_A - 10));
#endif
}
} /* End of \xdd handling */
} /* End of Perl-style \x handling */
break;
/* For \c, a following letter is upper-cased; then the 0x40 bit is flipped.
An error is given if the byte following \c is not an ASCII character. This
coding is ASCII-specific, but then the whole concept of \cx is
ASCII-specific. (However, an EBCDIC equivalent has now been added.) */
case CHAR_c:
c = *(++ptr);
if (c == CHAR_NULL)
{
*errorcodeptr = ERR2;
break;
}
#ifndef EBCDIC /* ASCII/UTF-8 coding */
if (c > 127) /* Excludes all non-ASCII in either mode */
{
*errorcodeptr = ERR68;
break;
}
if (c >= CHAR_a && c <= CHAR_z) c -= 32;
c ^= 0x40;
#else /* EBCDIC coding */
if (c >= CHAR_a && c <= CHAR_z) c += 64;
if (c == CHAR_QUESTION_MARK)
c = ('\\' == 188 && '`' == 74)? 0x5f : 0xff;
else
{
for (i = 0; i < 32; i++)
{
if (c == ebcdic_escape_c[i]) break;
}
if (i < 32) c = i; else *errorcodeptr = ERR68;
}
#endif
break;
/* PCRE_EXTRA enables extensions to Perl in the matter of escapes. Any
other alphanumeric following \ is an error if PCRE_EXTRA was set;
otherwise, for Perl compatibility, it is a literal. This code looks a bit
odd, but there used to be some cases other than the default, and there may
be again in future, so I haven't "optimized" it. */
default:
if ((options & PCRE_EXTRA) != 0) switch(c)
{
default:
*errorcodeptr = ERR3;
break;
}
break;
}
}
/* Perl supports \N{name} for character names, as well as plain \N for "not
newline". PCRE does not support \N{name}. However, it does support
quantification such as \N{2,3}. */
if (escape == ESC_N && ptr[1] == CHAR_LEFT_CURLY_BRACKET &&
!is_counted_repeat(ptr+2))
*errorcodeptr = ERR37;
/* If PCRE_UCP is set, we change the values for \d etc. */
if ((options & PCRE_UCP) != 0 && escape >= ESC_D && escape <= ESC_w)
escape += (ESC_DU - ESC_D);
/* Set the pointer to the final character before returning. */
*ptrptr = ptr;
*chptr = c;
return escape;
}
#ifdef SUPPORT_UCP
/*************************************************
* Handle \P and \p *
*************************************************/
/* This function is called after \P or \p has been encountered, provided that
PCRE is compiled with support for Unicode properties. On entry, ptrptr is
pointing at the P or p. On exit, it is pointing at the final character of the
escape sequence.
Argument:
ptrptr points to the pattern position pointer
negptr points to a boolean that is set TRUE for negation else FALSE
ptypeptr points to an unsigned int that is set to the type value
pdataptr points to an unsigned int that is set to the detailed property value
errorcodeptr points to the error code variable
Returns: TRUE if the type value was found, or FALSE for an invalid type
*/
static BOOL
get_ucp(const pcre_uchar **ptrptr, BOOL *negptr, unsigned int *ptypeptr,
unsigned int *pdataptr, int *errorcodeptr)
{
pcre_uchar c;
int i, bot, top;
const pcre_uchar *ptr = *ptrptr;
pcre_uchar name[32];
c = *(++ptr);
if (c == CHAR_NULL) goto ERROR_RETURN;
*negptr = FALSE;
/* \P or \p can be followed by a name in {}, optionally preceded by ^ for
negation. */
if (c == CHAR_LEFT_CURLY_BRACKET)
{
if (ptr[1] == CHAR_CIRCUMFLEX_ACCENT)
{
*negptr = TRUE;
ptr++;
}
for (i = 0; i < (int)(sizeof(name) / sizeof(pcre_uchar)) - 1; i++)
{
c = *(++ptr);
if (c == CHAR_NULL) goto ERROR_RETURN;
if (c == CHAR_RIGHT_CURLY_BRACKET) break;
name[i] = c;
}
if (c != CHAR_RIGHT_CURLY_BRACKET) goto ERROR_RETURN;
name[i] = 0;
}
/* Otherwise there is just one following character */
else
{
name[0] = c;
name[1] = 0;
}
*ptrptr = ptr;
/* Search for a recognized property name using binary chop */
bot = 0;
top = PRIV(utt_size);
while (bot < top)
{
int r;
i = (bot + top) >> 1;
r = STRCMP_UC_C8(name, PRIV(utt_names) + PRIV(utt)[i].name_offset);
if (r == 0)
{
*ptypeptr = PRIV(utt)[i].type;
*pdataptr = PRIV(utt)[i].value;
return TRUE;
}
if (r > 0) bot = i + 1; else top = i;
}
*errorcodeptr = ERR47;
*ptrptr = ptr;
return FALSE;
ERROR_RETURN:
*errorcodeptr = ERR46;
*ptrptr = ptr;
return FALSE;
}
#endif
/*************************************************
* Read repeat counts *
*************************************************/
/* Read an item of the form {n,m} and return the values. This is called only
after is_counted_repeat() has confirmed that a repeat-count quantifier exists,
so the syntax is guaranteed to be correct, but we need to check the values.
Arguments:
p pointer to first char after '{'
minp pointer to int for min
maxp pointer to int for max
returned as -1 if no max
errorcodeptr points to error code variable
Returns: pointer to '}' on success;
current ptr on error, with errorcodeptr set non-zero
*/
static const pcre_uchar *
read_repeat_counts(const pcre_uchar *p, int *minp, int *maxp, int *errorcodeptr)
{
int min = 0;
int max = -1;
while (IS_DIGIT(*p))
{
min = min * 10 + (int)(*p++ - CHAR_0);
if (min > 65535)
{
*errorcodeptr = ERR5;
return p;
}
}
if (*p == CHAR_RIGHT_CURLY_BRACKET) max = min; else
{
if (*(++p) != CHAR_RIGHT_CURLY_BRACKET)
{
max = 0;
while(IS_DIGIT(*p))
{
max = max * 10 + (int)(*p++ - CHAR_0);
if (max > 65535)
{
*errorcodeptr = ERR5;
return p;
}
}
if (max < min)
{
*errorcodeptr = ERR4;
return p;
}
}
}
*minp = min;
*maxp = max;
return p;
}
/*************************************************
* Find first significant op code *
*************************************************/
/* This is called by several functions that scan a compiled expression looking
for a fixed first character, or an anchoring op code etc. It skips over things
that do not influence this. For some calls, it makes sense to skip negative
forward and all backward assertions, and also the \b assertion; for others it
does not.
Arguments:
code pointer to the start of the group
skipassert TRUE if certain assertions are to be skipped
Returns: pointer to the first significant opcode
*/
static const pcre_uchar*
first_significant_code(const pcre_uchar *code, BOOL skipassert)
{
for (;;)
{
switch ((int)*code)
{
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
if (!skipassert) return code;
do code += GET(code, 1); while (*code == OP_ALT);
code += PRIV(OP_lengths)[*code];
break;
case OP_WORD_BOUNDARY:
case OP_NOT_WORD_BOUNDARY:
if (!skipassert) return code;
/* Fall through */
case OP_CALLOUT:
case OP_CREF:
case OP_DNCREF:
case OP_RREF:
case OP_DNRREF:
case OP_DEF:
code += PRIV(OP_lengths)[*code];
break;
default:
return code;
}
}
/* Control never reaches here */
}
/*************************************************
* Find the fixed length of a branch *
*************************************************/
/* Scan a branch and compute the fixed length of subject that will match it,
if the length is fixed. This is needed for dealing with backward assertions.
In UTF8 mode, the result is in characters rather than bytes. The branch is
temporarily terminated with OP_END when this function is called.
This function is called when a backward assertion is encountered, so that if it
fails, the error message can point to the correct place in the pattern.
However, we cannot do this when the assertion contains subroutine calls,
because they can be forward references. We solve this by remembering this case
and doing the check at the end; a flag specifies which mode we are running in.
Arguments:
code points to the start of the pattern (the bracket)
utf TRUE in UTF-8 / UTF-16 / UTF-32 mode
atend TRUE if called when the pattern is complete
cd the "compile data" structure
recurses chain of recurse_check to catch mutual recursion
Returns: the fixed length,
or -1 if there is no fixed length,
or -2 if \C was encountered (in UTF-8 mode only)
or -3 if an OP_RECURSE item was encountered and atend is FALSE
or -4 if an unknown opcode was encountered (internal error)
*/
static int
find_fixedlength(pcre_uchar *code, BOOL utf, BOOL atend, compile_data *cd,
recurse_check *recurses)
{
int length = -1;
recurse_check this_recurse;
register int branchlength = 0;
register pcre_uchar *cc = code + 1 + LINK_SIZE;
/* Scan along the opcodes for this branch. If we get to the end of the
branch, check the length against that of the other branches. */
for (;;)
{
int d;
pcre_uchar *ce, *cs;
register pcre_uchar op = *cc;
switch (op)
{
/* We only need to continue for OP_CBRA (normal capturing bracket) and
OP_BRA (normal non-capturing bracket) because the other variants of these
opcodes are all concerned with unlimited repeated groups, which of course
are not of fixed length. */
case OP_CBRA:
case OP_BRA:
case OP_ONCE:
case OP_ONCE_NC:
case OP_COND:
d = find_fixedlength(cc + ((op == OP_CBRA)? IMM2_SIZE : 0), utf, atend, cd,
recurses);
if (d < 0) return d;
branchlength += d;
do cc += GET(cc, 1); while (*cc == OP_ALT);
cc += 1 + LINK_SIZE;
break;
/* Reached end of a branch; if it's a ket it is the end of a nested call.
If it's ALT it is an alternation in a nested call. An ACCEPT is effectively
an ALT. If it is END it's the end of the outer call. All can be handled by
the same code. Note that we must not include the OP_KETRxxx opcodes here,
because they all imply an unlimited repeat. */
case OP_ALT:
case OP_KET:
case OP_END:
case OP_ACCEPT:
case OP_ASSERT_ACCEPT:
if (length < 0) length = branchlength;
else if (length != branchlength) return -1;
if (*cc != OP_ALT) return length;
cc += 1 + LINK_SIZE;
branchlength = 0;
break;
/* A true recursion implies not fixed length, but a subroutine call may
be OK. If the subroutine is a forward reference, we can't deal with
it until the end of the pattern, so return -3. */
case OP_RECURSE:
if (!atend) return -3;
cs = ce = (pcre_uchar *)cd->start_code + GET(cc, 1); /* Start subpattern */
do ce += GET(ce, 1); while (*ce == OP_ALT); /* End subpattern */
if (cc > cs && cc < ce) return -1; /* Recursion */
else /* Check for mutual recursion */
{
recurse_check *r = recurses;
for (r = recurses; r != NULL; r = r->prev) if (r->group == cs) break;
if (r != NULL) return -1; /* Mutual recursion */
}
this_recurse.prev = recurses;
this_recurse.group = cs;
d = find_fixedlength(cs + IMM2_SIZE, utf, atend, cd, &this_recurse);
if (d < 0) return d;
branchlength += d;
cc += 1 + LINK_SIZE;
break;
/* Skip over assertive subpatterns */
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
do cc += GET(cc, 1); while (*cc == OP_ALT);
cc += 1 + LINK_SIZE;
break;
/* Skip over things that don't match chars */
case OP_MARK:
case OP_PRUNE_ARG:
case OP_SKIP_ARG:
case OP_THEN_ARG:
cc += cc[1] + PRIV(OP_lengths)[*cc];
break;
case OP_CALLOUT:
case OP_CIRC:
case OP_CIRCM:
case OP_CLOSE:
case OP_COMMIT:
case OP_CREF:
case OP_DEF:
case OP_DNCREF:
case OP_DNRREF:
case OP_DOLL:
case OP_DOLLM:
case OP_EOD:
case OP_EODN:
case OP_FAIL:
case OP_NOT_WORD_BOUNDARY:
case OP_PRUNE:
case OP_REVERSE:
case OP_RREF:
case OP_SET_SOM:
case OP_SKIP:
case OP_SOD:
case OP_SOM:
case OP_THEN:
case OP_WORD_BOUNDARY:
cc += PRIV(OP_lengths)[*cc];
break;
/* Handle literal characters */
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
branchlength++;
cc += 2;
#ifdef SUPPORT_UTF
if (utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
break;
/* Handle exact repetitions. The count is already in characters, but we
need to skip over a multibyte character in UTF8 mode. */
case OP_EXACT:
case OP_EXACTI:
case OP_NOTEXACT:
case OP_NOTEXACTI:
branchlength += (int)GET2(cc,1);
cc += 2 + IMM2_SIZE;
#ifdef SUPPORT_UTF
if (utf && HAS_EXTRALEN(cc[-1])) cc += GET_EXTRALEN(cc[-1]);
#endif
break;
case OP_TYPEEXACT:
branchlength += GET2(cc,1);
if (cc[1 + IMM2_SIZE] == OP_PROP || cc[1 + IMM2_SIZE] == OP_NOTPROP)
cc += 2;
cc += 1 + IMM2_SIZE + 1;
break;
/* Handle single-char matchers */
case OP_PROP:
case OP_NOTPROP:
cc += 2;
/* Fall through */
case OP_HSPACE:
case OP_VSPACE:
case OP_NOT_HSPACE:
case OP_NOT_VSPACE:
case OP_NOT_DIGIT:
case OP_DIGIT:
case OP_NOT_WHITESPACE:
case OP_WHITESPACE:
case OP_NOT_WORDCHAR:
case OP_WORDCHAR:
case OP_ANY:
case OP_ALLANY:
branchlength++;
cc++;
break;
/* The single-byte matcher isn't allowed. This only happens in UTF-8 mode;
otherwise \C is coded as OP_ALLANY. */
case OP_ANYBYTE:
return -2;
/* Check a class for variable quantification */
case OP_CLASS:
case OP_NCLASS:
#if defined SUPPORT_UTF || defined COMPILE_PCRE16 || defined COMPILE_PCRE32
case OP_XCLASS:
/* The original code caused an unsigned overflow in 64 bit systems,
so now we use a conditional statement. */
if (op == OP_XCLASS)
cc += GET(cc, 1);
else
cc += PRIV(OP_lengths)[OP_CLASS];
#else
cc += PRIV(OP_lengths)[OP_CLASS];
#endif
switch (*cc)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRPOSSTAR:
case OP_CRPOSPLUS:
case OP_CRPOSQUERY:
return -1;
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSRANGE:
if (GET2(cc,1) != GET2(cc,1+IMM2_SIZE)) return -1;
branchlength += (int)GET2(cc,1);
cc += 1 + 2 * IMM2_SIZE;
break;
default:
branchlength++;
}
break;
/* Anything else is variable length */
case OP_ANYNL:
case OP_BRAMINZERO:
case OP_BRAPOS:
case OP_BRAPOSZERO:
case OP_BRAZERO:
case OP_CBRAPOS:
case OP_EXTUNI:
case OP_KETRMAX:
case OP_KETRMIN:
case OP_KETRPOS:
case OP_MINPLUS:
case OP_MINPLUSI:
case OP_MINQUERY:
case OP_MINQUERYI:
case OP_MINSTAR:
case OP_MINSTARI:
case OP_MINUPTO:
case OP_MINUPTOI:
case OP_NOTMINPLUS:
case OP_NOTMINPLUSI:
case OP_NOTMINQUERY:
case OP_NOTMINQUERYI:
case OP_NOTMINSTAR:
case OP_NOTMINSTARI:
case OP_NOTMINUPTO:
case OP_NOTMINUPTOI:
case OP_NOTPLUS:
case OP_NOTPLUSI:
case OP_NOTPOSPLUS:
case OP_NOTPOSPLUSI:
case OP_NOTPOSQUERY:
case OP_NOTPOSQUERYI:
case OP_NOTPOSSTAR:
case OP_NOTPOSSTARI:
case OP_NOTPOSUPTO:
case OP_NOTPOSUPTOI:
case OP_NOTQUERY:
case OP_NOTQUERYI:
case OP_NOTSTAR:
case OP_NOTSTARI:
case OP_NOTUPTO:
case OP_NOTUPTOI:
case OP_PLUS:
case OP_PLUSI:
case OP_POSPLUS:
case OP_POSPLUSI:
case OP_POSQUERY:
case OP_POSQUERYI:
case OP_POSSTAR:
case OP_POSSTARI:
case OP_POSUPTO:
case OP_POSUPTOI:
case OP_QUERY:
case OP_QUERYI:
case OP_REF:
case OP_REFI:
case OP_DNREF:
case OP_DNREFI:
case OP_SBRA:
case OP_SBRAPOS:
case OP_SCBRA:
case OP_SCBRAPOS:
case OP_SCOND:
case OP_SKIPZERO:
case OP_STAR:
case OP_STARI:
case OP_TYPEMINPLUS:
case OP_TYPEMINQUERY:
case OP_TYPEMINSTAR:
case OP_TYPEMINUPTO:
case OP_TYPEPLUS:
case OP_TYPEPOSPLUS:
case OP_TYPEPOSQUERY:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSUPTO:
case OP_TYPEQUERY:
case OP_TYPESTAR:
case OP_TYPEUPTO:
case OP_UPTO:
case OP_UPTOI:
return -1;
/* Catch unrecognized opcodes so that when new ones are added they
are not forgotten, as has happened in the past. */
default:
return -4;
}
}
/* Control never gets here */
}
/*************************************************
* Scan compiled regex for specific bracket *
*************************************************/
/* This little function scans through a compiled pattern until it finds a
capturing bracket with the given number, or, if the number is negative, an
instance of OP_REVERSE for a lookbehind. The function is global in the C sense
so that it can be called from pcre_study() when finding the minimum matching
length.
Arguments:
code points to start of expression
utf TRUE in UTF-8 / UTF-16 / UTF-32 mode
number the required bracket number or negative to find a lookbehind
Returns: pointer to the opcode for the bracket, or NULL if not found
*/
const pcre_uchar *
PRIV(find_bracket)(const pcre_uchar *code, BOOL utf, int number)
{
for (;;)
{
register pcre_uchar c = *code;
if (c == OP_END) return NULL;
/* XCLASS is used for classes that cannot be represented just by a bit
map. This includes negated single high-valued characters. The length in
the table is zero; the actual length is stored in the compiled code. */
if (c == OP_XCLASS) code += GET(code, 1);
/* Handle recursion */
else if (c == OP_REVERSE)
{
if (number < 0) return (pcre_uchar *)code;
code += PRIV(OP_lengths)[c];
}
/* Handle capturing bracket */
else if (c == OP_CBRA || c == OP_SCBRA ||
c == OP_CBRAPOS || c == OP_SCBRAPOS)
{
int n = (int)GET2(code, 1+LINK_SIZE);
if (n == number) return (pcre_uchar *)code;
code += PRIV(OP_lengths)[c];
}
/* Otherwise, we can get the item's length from the table, except that for
repeated character types, we have to test for \p and \P, which have an extra
two bytes of parameters, and for MARK/PRUNE/SKIP/THEN with an argument, we
must add in its length. */
else
{
switch(c)
{
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSPLUS:
case OP_TYPEPOSQUERY:
if (code[1] == OP_PROP || code[1] == OP_NOTPROP) code += 2;
break;
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
case OP_TYPEEXACT:
case OP_TYPEPOSUPTO:
if (code[1 + IMM2_SIZE] == OP_PROP || code[1 + IMM2_SIZE] == OP_NOTPROP)
code += 2;
break;
case OP_MARK:
case OP_PRUNE_ARG:
case OP_SKIP_ARG:
case OP_THEN_ARG:
code += code[1];
break;
}
/* Add in the fixed length from the table */
code += PRIV(OP_lengths)[c];
/* In UTF-8 mode, opcodes that are followed by a character may be followed by
a multi-byte character. The length in the table is a minimum, so we have to
arrange to skip the extra bytes. */
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf) switch(c)
{
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
case OP_EXACT:
case OP_EXACTI:
case OP_NOTEXACT:
case OP_NOTEXACTI:
case OP_UPTO:
case OP_UPTOI:
case OP_NOTUPTO:
case OP_NOTUPTOI:
case OP_MINUPTO:
case OP_MINUPTOI:
case OP_NOTMINUPTO:
case OP_NOTMINUPTOI:
case OP_POSUPTO:
case OP_POSUPTOI:
case OP_NOTPOSUPTO:
case OP_NOTPOSUPTOI:
case OP_STAR:
case OP_STARI:
case OP_NOTSTAR:
case OP_NOTSTARI:
case OP_MINSTAR:
case OP_MINSTARI:
case OP_NOTMINSTAR:
case OP_NOTMINSTARI:
case OP_POSSTAR:
case OP_POSSTARI:
case OP_NOTPOSSTAR:
case OP_NOTPOSSTARI:
case OP_PLUS:
case OP_PLUSI:
case OP_NOTPLUS:
case OP_NOTPLUSI:
case OP_MINPLUS:
case OP_MINPLUSI:
case OP_NOTMINPLUS:
case OP_NOTMINPLUSI:
case OP_POSPLUS:
case OP_POSPLUSI:
case OP_NOTPOSPLUS:
case OP_NOTPOSPLUSI:
case OP_QUERY:
case OP_QUERYI:
case OP_NOTQUERY:
case OP_NOTQUERYI:
case OP_MINQUERY:
case OP_MINQUERYI:
case OP_NOTMINQUERY:
case OP_NOTMINQUERYI:
case OP_POSQUERY:
case OP_POSQUERYI:
case OP_NOTPOSQUERY:
case OP_NOTPOSQUERYI:
if (HAS_EXTRALEN(code[-1])) code += GET_EXTRALEN(code[-1]);
break;
}
#else
(void)(utf); /* Keep compiler happy by referencing function argument */
#endif
}
}
}
/*************************************************
* Scan compiled regex for recursion reference *
*************************************************/
/* This little function scans through a compiled pattern until it finds an
instance of OP_RECURSE.
Arguments:
code points to start of expression
utf TRUE in UTF-8 / UTF-16 / UTF-32 mode
Returns: pointer to the opcode for OP_RECURSE, or NULL if not found
*/
static const pcre_uchar *
find_recurse(const pcre_uchar *code, BOOL utf)
{
for (;;)
{
register pcre_uchar c = *code;
if (c == OP_END) return NULL;
if (c == OP_RECURSE) return code;
/* XCLASS is used for classes that cannot be represented just by a bit
map. This includes negated single high-valued characters. The length in
the table is zero; the actual length is stored in the compiled code. */
if (c == OP_XCLASS) code += GET(code, 1);
/* Otherwise, we can get the item's length from the table, except that for
repeated character types, we have to test for \p and \P, which have an extra
two bytes of parameters, and for MARK/PRUNE/SKIP/THEN with an argument, we
must add in its length. */
else
{
switch(c)
{
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSPLUS:
case OP_TYPEPOSQUERY:
if (code[1] == OP_PROP || code[1] == OP_NOTPROP) code += 2;
break;
case OP_TYPEPOSUPTO:
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
case OP_TYPEEXACT:
if (code[1 + IMM2_SIZE] == OP_PROP || code[1 + IMM2_SIZE] == OP_NOTPROP)
code += 2;
break;
case OP_MARK:
case OP_PRUNE_ARG:
case OP_SKIP_ARG:
case OP_THEN_ARG:
code += code[1];
break;
}
/* Add in the fixed length from the table */
code += PRIV(OP_lengths)[c];
/* In UTF-8 mode, opcodes that are followed by a character may be followed
by a multi-byte character. The length in the table is a minimum, so we have
to arrange to skip the extra bytes. */
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf) switch(c)
{
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
case OP_EXACT:
case OP_EXACTI:
case OP_NOTEXACT:
case OP_NOTEXACTI:
case OP_UPTO:
case OP_UPTOI:
case OP_NOTUPTO:
case OP_NOTUPTOI:
case OP_MINUPTO:
case OP_MINUPTOI:
case OP_NOTMINUPTO:
case OP_NOTMINUPTOI:
case OP_POSUPTO:
case OP_POSUPTOI:
case OP_NOTPOSUPTO:
case OP_NOTPOSUPTOI:
case OP_STAR:
case OP_STARI:
case OP_NOTSTAR:
case OP_NOTSTARI:
case OP_MINSTAR:
case OP_MINSTARI:
case OP_NOTMINSTAR:
case OP_NOTMINSTARI:
case OP_POSSTAR:
case OP_POSSTARI:
case OP_NOTPOSSTAR:
case OP_NOTPOSSTARI:
case OP_PLUS:
case OP_PLUSI:
case OP_NOTPLUS:
case OP_NOTPLUSI:
case OP_MINPLUS:
case OP_MINPLUSI:
case OP_NOTMINPLUS:
case OP_NOTMINPLUSI:
case OP_POSPLUS:
case OP_POSPLUSI:
case OP_NOTPOSPLUS:
case OP_NOTPOSPLUSI:
case OP_QUERY:
case OP_QUERYI:
case OP_NOTQUERY:
case OP_NOTQUERYI:
case OP_MINQUERY:
case OP_MINQUERYI:
case OP_NOTMINQUERY:
case OP_NOTMINQUERYI:
case OP_POSQUERY:
case OP_POSQUERYI:
case OP_NOTPOSQUERY:
case OP_NOTPOSQUERYI:
if (HAS_EXTRALEN(code[-1])) code += GET_EXTRALEN(code[-1]);
break;
}
#else
(void)(utf); /* Keep compiler happy by referencing function argument */
#endif
}
}
}
/*************************************************
* Scan compiled branch for non-emptiness *
*************************************************/
/* This function scans through a branch of a compiled pattern to see whether it
can match the empty string or not. It is called from could_be_empty()
below and from compile_branch() when checking for an unlimited repeat of a
group that can match nothing. Note that first_significant_code() skips over
backward and negative forward assertions when its final argument is TRUE. If we
hit an unclosed bracket, we return "empty" - this means we've struck an inner
bracket whose current branch will already have been scanned.
Arguments:
code points to start of search
endcode points to where to stop
utf TRUE if in UTF-8 / UTF-16 / UTF-32 mode
cd contains pointers to tables etc.
recurses chain of recurse_check to catch mutual recursion
Returns: TRUE if what is matched could be empty
*/
static BOOL
could_be_empty_branch(const pcre_uchar *code, const pcre_uchar *endcode,
BOOL utf, compile_data *cd, recurse_check *recurses)
{
register pcre_uchar c;
recurse_check this_recurse;
for (code = first_significant_code(code + PRIV(OP_lengths)[*code], TRUE);
code < endcode;
code = first_significant_code(code + PRIV(OP_lengths)[c], TRUE))
{
const pcre_uchar *ccode;
c = *code;
/* Skip over forward assertions; the other assertions are skipped by
first_significant_code() with a TRUE final argument. */
if (c == OP_ASSERT)
{
do code += GET(code, 1); while (*code == OP_ALT);
c = *code;
continue;
}
/* For a recursion/subroutine call, if its end has been reached, which
implies a backward reference subroutine call, we can scan it. If it's a
forward reference subroutine call, we can't. To detect forward reference
we have to scan up the list that is kept in the workspace. This function is
called only when doing the real compile, not during the pre-compile that
measures the size of the compiled pattern. */
if (c == OP_RECURSE)
{
const pcre_uchar *scode = cd->start_code + GET(code, 1);
const pcre_uchar *endgroup = scode;
BOOL empty_branch;
/* Test for forward reference or uncompleted reference. This is disabled
when called to scan a completed pattern by setting cd->start_workspace to
NULL. */
if (cd->start_workspace != NULL)
{
const pcre_uchar *tcode;
for (tcode = cd->start_workspace; tcode < cd->hwm; tcode += LINK_SIZE)
if ((int)GET(tcode, 0) == (int)(code + 1 - cd->start_code)) return TRUE;
if (GET(scode, 1) == 0) return TRUE; /* Unclosed */
}
/* If the reference is to a completed group, we need to detect whether this
is a recursive call, as otherwise there will be an infinite loop. If it is
a recursion, just skip over it. Simple recursions are easily detected. For
mutual recursions we keep a chain on the stack. */
do endgroup += GET(endgroup, 1); while (*endgroup == OP_ALT);
if (code >= scode && code <= endgroup) continue; /* Simple recursion */
else
{
recurse_check *r = recurses;
for (r = recurses; r != NULL; r = r->prev)
if (r->group == scode) break;
if (r != NULL) continue; /* Mutual recursion */
}
/* Completed reference; scan the referenced group, remembering it on the
stack chain to detect mutual recursions. */
empty_branch = FALSE;
this_recurse.prev = recurses;
this_recurse.group = scode;
do
{
if (could_be_empty_branch(scode, endcode, utf, cd, &this_recurse))
{
empty_branch = TRUE;
break;
}
scode += GET(scode, 1);
}
while (*scode == OP_ALT);
if (!empty_branch) return FALSE; /* All branches are non-empty */
continue;
}
/* Groups with zero repeats can of course be empty; skip them. */
if (c == OP_BRAZERO || c == OP_BRAMINZERO || c == OP_SKIPZERO ||
c == OP_BRAPOSZERO)
{
code += PRIV(OP_lengths)[c];
do code += GET(code, 1); while (*code == OP_ALT);
c = *code;
continue;
}
/* A nested group that is already marked as "could be empty" can just be
skipped. */
if (c == OP_SBRA || c == OP_SBRAPOS ||
c == OP_SCBRA || c == OP_SCBRAPOS)
{
do code += GET(code, 1); while (*code == OP_ALT);
c = *code;
continue;
}
/* For other groups, scan the branches. */
if (c == OP_BRA || c == OP_BRAPOS ||
c == OP_CBRA || c == OP_CBRAPOS ||
c == OP_ONCE || c == OP_ONCE_NC ||
c == OP_COND || c == OP_SCOND)
{
BOOL empty_branch;
if (GET(code, 1) == 0) return TRUE; /* Hit unclosed bracket */
/* If a conditional group has only one branch, there is a second, implied,
empty branch, so just skip over the conditional, because it could be empty.
Otherwise, scan the individual branches of the group. */
if (c == OP_COND && code[GET(code, 1)] != OP_ALT)
code += GET(code, 1);
else
{
empty_branch = FALSE;
do
{
if (!empty_branch && could_be_empty_branch(code, endcode, utf, cd,
recurses)) empty_branch = TRUE;
code += GET(code, 1);
}
while (*code == OP_ALT);
if (!empty_branch) return FALSE; /* All branches are non-empty */
}
c = *code;
continue;
}
/* Handle the other opcodes */
switch (c)
{
/* Check for quantifiers after a class. XCLASS is used for classes that
cannot be represented just by a bit map. This includes negated single
high-valued characters. The length in PRIV(OP_lengths)[] is zero; the
actual length is stored in the compiled code, so we must update "code"
here. */
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
ccode = code += GET(code, 1);
goto CHECK_CLASS_REPEAT;
#endif
case OP_CLASS:
case OP_NCLASS:
ccode = code + PRIV(OP_lengths)[OP_CLASS];
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
CHECK_CLASS_REPEAT:
#endif
switch (*ccode)
{
case OP_CRSTAR: /* These could be empty; continue */
case OP_CRMINSTAR:
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRPOSSTAR:
case OP_CRPOSQUERY:
break;
default: /* Non-repeat => class must match */
case OP_CRPLUS: /* These repeats aren't empty */
case OP_CRMINPLUS:
case OP_CRPOSPLUS:
return FALSE;
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSRANGE:
if (GET2(ccode, 1) > 0) return FALSE; /* Minimum > 0 */
break;
}
break;
/* Opcodes that must match a character */
case OP_ANY:
case OP_ALLANY:
case OP_ANYBYTE:
case OP_PROP:
case OP_NOTPROP:
case OP_ANYNL:
case OP_NOT_HSPACE:
case OP_HSPACE:
case OP_NOT_VSPACE:
case OP_VSPACE:
case OP_EXTUNI:
case OP_NOT_DIGIT:
case OP_DIGIT:
case OP_NOT_WHITESPACE:
case OP_WHITESPACE:
case OP_NOT_WORDCHAR:
case OP_WORDCHAR:
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
case OP_PLUS:
case OP_PLUSI:
case OP_MINPLUS:
case OP_MINPLUSI:
case OP_NOTPLUS:
case OP_NOTPLUSI:
case OP_NOTMINPLUS:
case OP_NOTMINPLUSI:
case OP_POSPLUS:
case OP_POSPLUSI:
case OP_NOTPOSPLUS:
case OP_NOTPOSPLUSI:
case OP_EXACT:
case OP_EXACTI:
case OP_NOTEXACT:
case OP_NOTEXACTI:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEPOSPLUS:
case OP_TYPEEXACT:
return FALSE;
/* These are going to continue, as they may be empty, but we have to
fudge the length for the \p and \P cases. */
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPOSSTAR:
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
case OP_TYPEPOSQUERY:
if (code[1] == OP_PROP || code[1] == OP_NOTPROP) code += 2;
break;
/* Same for these */
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
case OP_TYPEPOSUPTO:
if (code[1 + IMM2_SIZE] == OP_PROP || code[1 + IMM2_SIZE] == OP_NOTPROP)
code += 2;
break;
/* End of branch */
case OP_KET:
case OP_KETRMAX:
case OP_KETRMIN:
case OP_KETRPOS:
case OP_ALT:
return TRUE;
/* In UTF-8 mode, STAR, MINSTAR, POSSTAR, QUERY, MINQUERY, POSQUERY, UPTO,
MINUPTO, and POSUPTO and their caseless and negative versions may be
followed by a multibyte character. */
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
case OP_STAR:
case OP_STARI:
case OP_NOTSTAR:
case OP_NOTSTARI:
case OP_MINSTAR:
case OP_MINSTARI:
case OP_NOTMINSTAR:
case OP_NOTMINSTARI:
case OP_POSSTAR:
case OP_POSSTARI:
case OP_NOTPOSSTAR:
case OP_NOTPOSSTARI:
case OP_QUERY:
case OP_QUERYI:
case OP_NOTQUERY:
case OP_NOTQUERYI:
case OP_MINQUERY:
case OP_MINQUERYI:
case OP_NOTMINQUERY:
case OP_NOTMINQUERYI:
case OP_POSQUERY:
case OP_POSQUERYI:
case OP_NOTPOSQUERY:
case OP_NOTPOSQUERYI:
if (utf && HAS_EXTRALEN(code[1])) code += GET_EXTRALEN(code[1]);
break;
case OP_UPTO:
case OP_UPTOI:
case OP_NOTUPTO:
case OP_NOTUPTOI:
case OP_MINUPTO:
case OP_MINUPTOI:
case OP_NOTMINUPTO:
case OP_NOTMINUPTOI:
case OP_POSUPTO:
case OP_POSUPTOI:
case OP_NOTPOSUPTO:
case OP_NOTPOSUPTOI:
if (utf && HAS_EXTRALEN(code[1 + IMM2_SIZE])) code += GET_EXTRALEN(code[1 + IMM2_SIZE]);
break;
#endif
/* MARK, and PRUNE/SKIP/THEN with an argument must skip over the argument
string. */
case OP_MARK:
case OP_PRUNE_ARG:
case OP_SKIP_ARG:
case OP_THEN_ARG:
code += code[1];
break;
/* None of the remaining opcodes are required to match a character. */
default:
break;
}
}
return TRUE;
}
/*************************************************
* Scan compiled regex for non-emptiness *
*************************************************/
/* This function is called to check for left recursive calls. We want to check
the current branch of the current pattern to see if it could match the empty
string. If it could, we must look outwards for branches at other levels,
stopping when we pass beyond the bracket which is the subject of the recursion.
This function is called only during the real compile, not during the
pre-compile.
Arguments:
code points to start of the recursion
endcode points to where to stop (current RECURSE item)
bcptr points to the chain of current (unclosed) branch starts
utf TRUE if in UTF-8 / UTF-16 / UTF-32 mode
cd pointers to tables etc
Returns: TRUE if what is matched could be empty
*/
static BOOL
could_be_empty(const pcre_uchar *code, const pcre_uchar *endcode,
branch_chain *bcptr, BOOL utf, compile_data *cd)
{
while (bcptr != NULL && bcptr->current_branch >= code)
{
if (!could_be_empty_branch(bcptr->current_branch, endcode, utf, cd, NULL))
return FALSE;
bcptr = bcptr->outer;
}
return TRUE;
}
/*************************************************
* Base opcode of repeated opcodes *
*************************************************/
/* Returns the base opcode for repeated single character type opcodes. If the
opcode is not a repeated character type, it returns with the original value.
Arguments: c opcode
Returns: base opcode for the type
*/
static pcre_uchar
get_repeat_base(pcre_uchar c)
{
return (c > OP_TYPEPOSUPTO)? c :
(c >= OP_TYPESTAR)? OP_TYPESTAR :
(c >= OP_NOTSTARI)? OP_NOTSTARI :
(c >= OP_NOTSTAR)? OP_NOTSTAR :
(c >= OP_STARI)? OP_STARI :
OP_STAR;
}
#ifdef SUPPORT_UCP
/*************************************************
* Check a character and a property *
*************************************************/
/* This function is called by check_auto_possessive() when a property item
is adjacent to a fixed character.
Arguments:
c the character
ptype the property type
pdata the data for the type
negated TRUE if it's a negated property (\P or \p{^)
Returns: TRUE if auto-possessifying is OK
*/
static BOOL
check_char_prop(pcre_uint32 c, unsigned int ptype, unsigned int pdata,
BOOL negated)
{
const pcre_uint32 *p;
const ucd_record *prop = GET_UCD(c);
switch(ptype)
{
case PT_LAMP:
return (prop->chartype == ucp_Lu ||
prop->chartype == ucp_Ll ||
prop->chartype == ucp_Lt) == negated;
case PT_GC:
return (pdata == PRIV(ucp_gentype)[prop->chartype]) == negated;
case PT_PC:
return (pdata == prop->chartype) == negated;
case PT_SC:
return (pdata == prop->script) == negated;
/* These are specials */
case PT_ALNUM:
return (PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N) == negated;
/* Perl space used to exclude VT, but from Perl 5.18 it is included, which
means that Perl space and POSIX space are now identical. PCRE was changed
at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
return negated;
default:
return (PRIV(ucp_gentype)[prop->chartype] == ucp_Z) == negated;
}
break; /* Control never reaches here */
case PT_WORD:
return (PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N ||
c == CHAR_UNDERSCORE) == negated;
case PT_CLIST:
p = PRIV(ucd_caseless_sets) + prop->caseset;
for (;;)
{
if (c < *p) return !negated;
if (c == *p++) return negated;
}
break; /* Control never reaches here */
}
return FALSE;
}
#endif /* SUPPORT_UCP */
/*************************************************
* Fill the character property list *
*************************************************/
/* Checks whether the code points to an opcode that can take part in auto-
possessification, and if so, fills a list with its properties.
Arguments:
code points to start of expression
utf TRUE if in UTF-8 / UTF-16 / UTF-32 mode
fcc points to case-flipping table
list points to output list
list[0] will be filled with the opcode
list[1] will be non-zero if this opcode
can match an empty character string
list[2..7] depends on the opcode
Returns: points to the start of the next opcode if *code is accepted
NULL if *code is not accepted
*/
static const pcre_uchar *
get_chr_property_list(const pcre_uchar *code, BOOL utf,
const pcre_uint8 *fcc, pcre_uint32 *list)
{
pcre_uchar c = *code;
pcre_uchar base;
const pcre_uchar *end;
pcre_uint32 chr;
#ifdef SUPPORT_UCP
pcre_uint32 *clist_dest;
const pcre_uint32 *clist_src;
#else
((void)utf); /* Suppress "unused parameter" compiler warning */
#endif
list[0] = c;
list[1] = FALSE;
code++;
if (c >= OP_STAR && c <= OP_TYPEPOSUPTO)
{
base = get_repeat_base(c);
c -= (base - OP_STAR);
if (c == OP_UPTO || c == OP_MINUPTO || c == OP_EXACT || c == OP_POSUPTO)
code += IMM2_SIZE;
list[1] = (c != OP_PLUS && c != OP_MINPLUS && c != OP_EXACT && c != OP_POSPLUS);
switch(base)
{
case OP_STAR:
list[0] = OP_CHAR;
break;
case OP_STARI:
list[0] = OP_CHARI;
break;
case OP_NOTSTAR:
list[0] = OP_NOT;
break;
case OP_NOTSTARI:
list[0] = OP_NOTI;
break;
case OP_TYPESTAR:
list[0] = *code;
code++;
break;
}
c = list[0];
}
switch(c)
{
case OP_NOT_DIGIT:
case OP_DIGIT:
case OP_NOT_WHITESPACE:
case OP_WHITESPACE:
case OP_NOT_WORDCHAR:
case OP_WORDCHAR:
case OP_ANY:
case OP_ALLANY:
case OP_ANYNL:
case OP_NOT_HSPACE:
case OP_HSPACE:
case OP_NOT_VSPACE:
case OP_VSPACE:
case OP_EXTUNI:
case OP_EODN:
case OP_EOD:
case OP_DOLL:
case OP_DOLLM:
return code;
case OP_CHAR:
case OP_NOT:
GETCHARINCTEST(chr, code);
list[2] = chr;
list[3] = NOTACHAR;
return code;
case OP_CHARI:
case OP_NOTI:
list[0] = (c == OP_CHARI) ? OP_CHAR : OP_NOT;
GETCHARINCTEST(chr, code);
list[2] = chr;
#ifdef SUPPORT_UCP
if (chr < 128 || (chr < 256 && !utf))
list[3] = fcc[chr];
else
list[3] = UCD_OTHERCASE(chr);
#elif defined SUPPORT_UTF || !defined COMPILE_PCRE8
list[3] = (chr < 256) ? fcc[chr] : chr;
#else
list[3] = fcc[chr];
#endif
/* The othercase might be the same value. */
if (chr == list[3])
list[3] = NOTACHAR;
else
list[4] = NOTACHAR;
return code;
#ifdef SUPPORT_UCP
case OP_PROP:
case OP_NOTPROP:
if (code[0] != PT_CLIST)
{
list[2] = code[0];
list[3] = code[1];
return code + 2;
}
/* Convert only if we have enough space. */
clist_src = PRIV(ucd_caseless_sets) + code[1];
clist_dest = list + 2;
code += 2;
do {
if (clist_dest >= list + 8)
{
/* Early return if there is not enough space. This should never
happen, since all clists are shorter than 5 character now. */
list[2] = code[0];
list[3] = code[1];
return code;
}
*clist_dest++ = *clist_src;
}
while(*clist_src++ != NOTACHAR);
/* All characters are stored. The terminating NOTACHAR
is copied form the clist itself. */
list[0] = (c == OP_PROP) ? OP_CHAR : OP_NOT;
return code;
#endif
case OP_NCLASS:
case OP_CLASS:
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
if (c == OP_XCLASS)
end = code + GET(code, 0) - 1;
else
#endif
end = code + 32 / sizeof(pcre_uchar);
switch(*end)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
case OP_CRQUERY:
case OP_CRMINQUERY:
case OP_CRPOSSTAR:
case OP_CRPOSQUERY:
list[1] = TRUE;
end++;
break;
case OP_CRPLUS:
case OP_CRMINPLUS:
case OP_CRPOSPLUS:
end++;
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
case OP_CRPOSRANGE:
list[1] = (GET2(end, 1) == 0);
end += 1 + 2 * IMM2_SIZE;
break;
}
list[2] = (pcre_uint32)(end - code);
return end;
}
return NULL; /* Opcode not accepted */
}
/*************************************************
* Scan further character sets for match *
*************************************************/
/* Checks whether the base and the current opcode have a common character, in
which case the base cannot be possessified.
Arguments:
code points to the byte code
utf TRUE in UTF-8 / UTF-16 / UTF-32 mode
cd static compile data
base_list the data list of the base opcode
Returns: TRUE if the auto-possessification is possible
*/
static BOOL
compare_opcodes(const pcre_uchar *code, BOOL utf, const compile_data *cd,
const pcre_uint32 *base_list, const pcre_uchar *base_end, int *rec_limit)
{
pcre_uchar c;
pcre_uint32 list[8];
const pcre_uint32 *chr_ptr;
const pcre_uint32 *ochr_ptr;
const pcre_uint32 *list_ptr;
const pcre_uchar *next_code;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
const pcre_uchar *xclass_flags;
#endif
const pcre_uint8 *class_bitset;
const pcre_uint8 *set1, *set2, *set_end;
pcre_uint32 chr;
BOOL accepted, invert_bits;
BOOL entered_a_group = FALSE;
if (*rec_limit == 0) return FALSE;
--(*rec_limit);
/* Note: the base_list[1] contains whether the current opcode has greedy
(represented by a non-zero value) quantifier. This is a different from
other character type lists, which stores here that the character iterator
matches to an empty string (also represented by a non-zero value). */
for(;;)
{
/* All operations move the code pointer forward.
Therefore infinite recursions are not possible. */
c = *code;
/* Skip over callouts */
if (c == OP_CALLOUT)
{
code += PRIV(OP_lengths)[c];
continue;
}
if (c == OP_ALT)
{
do code += GET(code, 1); while (*code == OP_ALT);
c = *code;
}
switch(c)
{
case OP_END:
case OP_KETRPOS:
/* TRUE only in greedy case. The non-greedy case could be replaced by
an OP_EXACT, but it is probably not worth it. (And note that OP_EXACT
uses more memory, which we cannot get at this stage.) */
return base_list[1] != 0;
case OP_KET:
/* If the bracket is capturing, and referenced by an OP_RECURSE, or
it is an atomic sub-pattern (assert, once, etc.) the non-greedy case
cannot be converted to a possessive form. */
if (base_list[1] == 0) return FALSE;
switch(*(code - GET(code, 1)))
{
case OP_ASSERT:
case OP_ASSERT_NOT:
case OP_ASSERTBACK:
case OP_ASSERTBACK_NOT:
case OP_ONCE:
case OP_ONCE_NC:
/* Atomic sub-patterns and assertions can always auto-possessify their
last iterator. However, if the group was entered as a result of checking
a previous iterator, this is not possible. */
return !entered_a_group;
}
code += PRIV(OP_lengths)[c];
continue;
case OP_ONCE:
case OP_ONCE_NC:
case OP_BRA:
case OP_CBRA:
next_code = code + GET(code, 1);
code += PRIV(OP_lengths)[c];
while (*next_code == OP_ALT)
{
if (!compare_opcodes(code, utf, cd, base_list, base_end, rec_limit))
return FALSE;
code = next_code + 1 + LINK_SIZE;
next_code += GET(next_code, 1);
}
entered_a_group = TRUE;
continue;
case OP_BRAZERO:
case OP_BRAMINZERO:
next_code = code + 1;
if (*next_code != OP_BRA && *next_code != OP_CBRA
&& *next_code != OP_ONCE && *next_code != OP_ONCE_NC) return FALSE;
do next_code += GET(next_code, 1); while (*next_code == OP_ALT);
/* The bracket content will be checked by the
OP_BRA/OP_CBRA case above. */
next_code += 1 + LINK_SIZE;
if (!compare_opcodes(next_code, utf, cd, base_list, base_end, rec_limit))
return FALSE;
code += PRIV(OP_lengths)[c];
continue;
default:
break;
}
/* Check for a supported opcode, and load its properties. */
code = get_chr_property_list(code, utf, cd->fcc, list);
if (code == NULL) return FALSE; /* Unsupported */
/* If either opcode is a small character list, set pointers for comparing
characters from that list with another list, or with a property. */
if (base_list[0] == OP_CHAR)
{
chr_ptr = base_list + 2;
list_ptr = list;
}
else if (list[0] == OP_CHAR)
{
chr_ptr = list + 2;
list_ptr = base_list;
}
/* Character bitsets can also be compared to certain opcodes. */
else if (base_list[0] == OP_CLASS || list[0] == OP_CLASS
#ifdef COMPILE_PCRE8
/* In 8 bit, non-UTF mode, OP_CLASS and OP_NCLASS are the same. */
|| (!utf && (base_list[0] == OP_NCLASS || list[0] == OP_NCLASS))
#endif
)
{
#ifdef COMPILE_PCRE8
if (base_list[0] == OP_CLASS || (!utf && base_list[0] == OP_NCLASS))
#else
if (base_list[0] == OP_CLASS)
#endif
{
set1 = (pcre_uint8 *)(base_end - base_list[2]);
list_ptr = list;
}
else
{
set1 = (pcre_uint8 *)(code - list[2]);
list_ptr = base_list;
}
invert_bits = FALSE;
switch(list_ptr[0])
{
case OP_CLASS:
case OP_NCLASS:
set2 = (pcre_uint8 *)
((list_ptr == list ? code : base_end) - list_ptr[2]);
break;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
xclass_flags = (list_ptr == list ? code : base_end) - list_ptr[2] + LINK_SIZE;
if ((*xclass_flags & XCL_HASPROP) != 0) return FALSE;
if ((*xclass_flags & XCL_MAP) == 0)
{
/* No bits are set for characters < 256. */
if (list[1] == 0) return (*xclass_flags & XCL_NOT) == 0;
/* Might be an empty repeat. */
continue;
}
set2 = (pcre_uint8 *)(xclass_flags + 1);
break;
#endif
case OP_NOT_DIGIT:
invert_bits = TRUE;
/* Fall through */
case OP_DIGIT:
set2 = (pcre_uint8 *)(cd->cbits + cbit_digit);
break;
case OP_NOT_WHITESPACE:
invert_bits = TRUE;
/* Fall through */
case OP_WHITESPACE:
set2 = (pcre_uint8 *)(cd->cbits + cbit_space);
break;
case OP_NOT_WORDCHAR:
invert_bits = TRUE;
/* Fall through */
case OP_WORDCHAR:
set2 = (pcre_uint8 *)(cd->cbits + cbit_word);
break;
default:
return FALSE;
}
/* Because the sets are unaligned, we need
to perform byte comparison here. */
set_end = set1 + 32;
if (invert_bits)
{
do
{
if ((*set1++ & ~(*set2++)) != 0) return FALSE;
}
while (set1 < set_end);
}
else
{
do
{
if ((*set1++ & *set2++) != 0) return FALSE;
}
while (set1 < set_end);
}
if (list[1] == 0) return TRUE;
/* Might be an empty repeat. */
continue;
}
/* Some property combinations also acceptable. Unicode property opcodes are
processed specially; the rest can be handled with a lookup table. */
else
{
pcre_uint32 leftop, rightop;
leftop = base_list[0];
rightop = list[0];
#ifdef SUPPORT_UCP
accepted = FALSE; /* Always set in non-unicode case. */
if (leftop == OP_PROP || leftop == OP_NOTPROP)
{
if (rightop == OP_EOD)
accepted = TRUE;
else if (rightop == OP_PROP || rightop == OP_NOTPROP)
{
int n;
const pcre_uint8 *p;
BOOL same = leftop == rightop;
BOOL lisprop = leftop == OP_PROP;
BOOL risprop = rightop == OP_PROP;
BOOL bothprop = lisprop && risprop;
/* There's a table that specifies how each combination is to be
processed:
0 Always return FALSE (never auto-possessify)
1 Character groups are distinct (possessify if both are OP_PROP)
2 Check character categories in the same group (general or particular)
3 Return TRUE if the two opcodes are not the same
... see comments below
*/
n = propposstab[base_list[2]][list[2]];
switch(n)
{
case 0: break;
case 1: accepted = bothprop; break;
case 2: accepted = (base_list[3] == list[3]) != same; break;
case 3: accepted = !same; break;
case 4: /* Left general category, right particular category */
accepted = risprop && catposstab[base_list[3]][list[3]] == same;
break;
case 5: /* Right general category, left particular category */
accepted = lisprop && catposstab[list[3]][base_list[3]] == same;
break;
/* This code is logically tricky. Think hard before fiddling with it.
The posspropstab table has four entries per row. Each row relates to
one of PCRE's special properties such as ALNUM or SPACE or WORD.
Only WORD actually needs all four entries, but using repeats for the
others means they can all use the same code below.
The first two entries in each row are Unicode general categories, and
apply always, because all the characters they include are part of the
PCRE character set. The third and fourth entries are a general and a
particular category, respectively, that include one or more relevant
characters. One or the other is used, depending on whether the check
is for a general or a particular category. However, in both cases the
category contains more characters than the specials that are defined
for the property being tested against. Therefore, it cannot be used
in a NOTPROP case.
Example: the row for WORD contains ucp_L, ucp_N, ucp_P, ucp_Po.
Underscore is covered by ucp_P or ucp_Po. */
case 6: /* Left alphanum vs right general category */
case 7: /* Left space vs right general category */
case 8: /* Left word vs right general category */
p = posspropstab[n-6];
accepted = risprop && lisprop ==
(list[3] != p[0] &&
list[3] != p[1] &&
(list[3] != p[2] || !lisprop));
break;
case 9: /* Right alphanum vs left general category */
case 10: /* Right space vs left general category */
case 11: /* Right word vs left general category */
p = posspropstab[n-9];
accepted = lisprop && risprop ==
(base_list[3] != p[0] &&
base_list[3] != p[1] &&
(base_list[3] != p[2] || !risprop));
break;
case 12: /* Left alphanum vs right particular category */
case 13: /* Left space vs right particular category */
case 14: /* Left word vs right particular category */
p = posspropstab[n-12];
accepted = risprop && lisprop ==
(catposstab[p[0]][list[3]] &&
catposstab[p[1]][list[3]] &&
(list[3] != p[3] || !lisprop));
break;
case 15: /* Right alphanum vs left particular category */
case 16: /* Right space vs left particular category */
case 17: /* Right word vs left particular category */
p = posspropstab[n-15];
accepted = lisprop && risprop ==
(catposstab[p[0]][base_list[3]] &&
catposstab[p[1]][base_list[3]] &&
(base_list[3] != p[3] || !risprop));
break;
}
}
}
else
#endif /* SUPPORT_UCP */
accepted = leftop >= FIRST_AUTOTAB_OP && leftop <= LAST_AUTOTAB_LEFT_OP &&
rightop >= FIRST_AUTOTAB_OP && rightop <= LAST_AUTOTAB_RIGHT_OP &&
autoposstab[leftop - FIRST_AUTOTAB_OP][rightop - FIRST_AUTOTAB_OP];
if (!accepted) return FALSE;
if (list[1] == 0) return TRUE;
/* Might be an empty repeat. */
continue;
}
/* Control reaches here only if one of the items is a small character list.
All characters are checked against the other side. */
do
{
chr = *chr_ptr;
switch(list_ptr[0])
{
case OP_CHAR:
ochr_ptr = list_ptr + 2;
do
{
if (chr == *ochr_ptr) return FALSE;
ochr_ptr++;
}
while(*ochr_ptr != NOTACHAR);
break;
case OP_NOT:
ochr_ptr = list_ptr + 2;
do
{
if (chr == *ochr_ptr)
break;
ochr_ptr++;
}
while(*ochr_ptr != NOTACHAR);
if (*ochr_ptr == NOTACHAR) return FALSE; /* Not found */
break;
/* Note that OP_DIGIT etc. are generated only when PCRE_UCP is *not*
set. When it is set, \d etc. are converted into OP_(NOT_)PROP codes. */
case OP_DIGIT:
if (chr < 256 && (cd->ctypes[chr] & ctype_digit) != 0) return FALSE;
break;
case OP_NOT_DIGIT:
if (chr > 255 || (cd->ctypes[chr] & ctype_digit) == 0) return FALSE;
break;
case OP_WHITESPACE:
if (chr < 256 && (cd->ctypes[chr] & ctype_space) != 0) return FALSE;
break;
case OP_NOT_WHITESPACE:
if (chr > 255 || (cd->ctypes[chr] & ctype_space) == 0) return FALSE;
break;
case OP_WORDCHAR:
if (chr < 255 && (cd->ctypes[chr] & ctype_word) != 0) return FALSE;
break;
case OP_NOT_WORDCHAR:
if (chr > 255 || (cd->ctypes[chr] & ctype_word) == 0) return FALSE;
break;
case OP_HSPACE:
switch(chr)
{
HSPACE_CASES: return FALSE;
default: break;
}
break;
case OP_NOT_HSPACE:
switch(chr)
{
HSPACE_CASES: break;
default: return FALSE;
}
break;
case OP_ANYNL:
case OP_VSPACE:
switch(chr)
{
VSPACE_CASES: return FALSE;
default: break;
}
break;
case OP_NOT_VSPACE:
switch(chr)
{
VSPACE_CASES: break;
default: return FALSE;
}
break;
case OP_DOLL:
case OP_EODN:
switch (chr)
{
case CHAR_CR:
case CHAR_LF:
case CHAR_VT:
case CHAR_FF:
case CHAR_NEL:
#ifndef EBCDIC
case 0x2028:
case 0x2029:
#endif /* Not EBCDIC */
return FALSE;
}
break;
case OP_EOD: /* Can always possessify before \z */
break;
#ifdef SUPPORT_UCP
case OP_PROP:
case OP_NOTPROP:
if (!check_char_prop(chr, list_ptr[2], list_ptr[3],
list_ptr[0] == OP_NOTPROP))
return FALSE;
break;
#endif
case OP_NCLASS:
if (chr > 255) return FALSE;
/* Fall through */
case OP_CLASS:
if (chr > 255) break;
class_bitset = (pcre_uint8 *)
((list_ptr == list ? code : base_end) - list_ptr[2]);
if ((class_bitset[chr >> 3] & (1U << (chr & 7))) != 0) return FALSE;
break;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
if (PRIV(xclass)(chr, (list_ptr == list ? code : base_end) -
list_ptr[2] + LINK_SIZE, utf)) return FALSE;
break;
#endif
default:
return FALSE;
}
chr_ptr++;
}
while(*chr_ptr != NOTACHAR);
/* At least one character must be matched from this opcode. */
if (list[1] == 0) return TRUE;
}
/* Control never reaches here. There used to be a fail-save return FALSE; here,
but some compilers complain about an unreachable statement. */
}
/*************************************************
* Scan compiled regex for auto-possession *
*************************************************/
/* Replaces single character iterations with their possessive alternatives
if appropriate. This function modifies the compiled opcode!
Arguments:
code points to start of the byte code
utf TRUE in UTF-8 / UTF-16 / UTF-32 mode
cd static compile data
Returns: nothing
*/
static void
auto_possessify(pcre_uchar *code, BOOL utf, const compile_data *cd)
{
register pcre_uchar c;
const pcre_uchar *end;
pcre_uchar *repeat_opcode;
pcre_uint32 list[8];
int rec_limit;
for (;;)
{
c = *code;
/* When a pattern with bad UTF-8 encoding is compiled with NO_UTF_CHECK,
it may compile without complaining, but may get into a loop here if the code
pointer points to a bad value. This is, of course a documentated possibility,
when NO_UTF_CHECK is set, so it isn't a bug, but we can detect this case and
just give up on this optimization. */
if (c >= OP_TABLE_LENGTH) return;
if (c >= OP_STAR && c <= OP_TYPEPOSUPTO)
{
c -= get_repeat_base(c) - OP_STAR;
end = (c <= OP_MINUPTO) ?
get_chr_property_list(code, utf, cd->fcc, list) : NULL;
list[1] = c == OP_STAR || c == OP_PLUS || c == OP_QUERY || c == OP_UPTO;
rec_limit = 1000;
if (end != NULL && compare_opcodes(end, utf, cd, list, end, &rec_limit))
{
switch(c)
{
case OP_STAR:
*code += OP_POSSTAR - OP_STAR;
break;
case OP_MINSTAR:
*code += OP_POSSTAR - OP_MINSTAR;
break;
case OP_PLUS:
*code += OP_POSPLUS - OP_PLUS;
break;
case OP_MINPLUS:
*code += OP_POSPLUS - OP_MINPLUS;
break;
case OP_QUERY:
*code += OP_POSQUERY - OP_QUERY;
break;
case OP_MINQUERY:
*code += OP_POSQUERY - OP_MINQUERY;
break;
case OP_UPTO:
*code += OP_POSUPTO - OP_UPTO;
break;
case OP_MINUPTO:
*code += OP_POSUPTO - OP_MINUPTO;
break;
}
}
c = *code;
}
else if (c == OP_CLASS || c == OP_NCLASS || c == OP_XCLASS)
{
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
if (c == OP_XCLASS)
repeat_opcode = code + GET(code, 1);
else
#endif
repeat_opcode = code + 1 + (32 / sizeof(pcre_uchar));
c = *repeat_opcode;
if (c >= OP_CRSTAR && c <= OP_CRMINRANGE)
{
/* end must not be NULL. */
end = get_chr_property_list(code, utf, cd->fcc, list);
list[1] = (c & 1) == 0;
rec_limit = 1000;
if (compare_opcodes(end, utf, cd, list, end, &rec_limit))
{
switch (c)
{
case OP_CRSTAR:
case OP_CRMINSTAR:
*repeat_opcode = OP_CRPOSSTAR;
break;
case OP_CRPLUS:
case OP_CRMINPLUS:
*repeat_opcode = OP_CRPOSPLUS;
break;
case OP_CRQUERY:
case OP_CRMINQUERY:
*repeat_opcode = OP_CRPOSQUERY;
break;
case OP_CRRANGE:
case OP_CRMINRANGE:
*repeat_opcode = OP_CRPOSRANGE;
break;
}
}
}
c = *code;
}
switch(c)
{
case OP_END:
return;
case OP_TYPESTAR:
case OP_TYPEMINSTAR:
case OP_TYPEPLUS:
case OP_TYPEMINPLUS:
case OP_TYPEQUERY:
case OP_TYPEMINQUERY:
case OP_TYPEPOSSTAR:
case OP_TYPEPOSPLUS:
case OP_TYPEPOSQUERY:
if (code[1] == OP_PROP || code[1] == OP_NOTPROP) code += 2;
break;
case OP_TYPEUPTO:
case OP_TYPEMINUPTO:
case OP_TYPEEXACT:
case OP_TYPEPOSUPTO:
if (code[1 + IMM2_SIZE] == OP_PROP || code[1 + IMM2_SIZE] == OP_NOTPROP)
code += 2;
break;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
code += GET(code, 1);
break;
#endif
case OP_MARK:
case OP_PRUNE_ARG:
case OP_SKIP_ARG:
case OP_THEN_ARG:
code += code[1];
break;
}
/* Add in the fixed length from the table */
code += PRIV(OP_lengths)[c];
/* In UTF-8 mode, opcodes that are followed by a character may be followed by
a multi-byte character. The length in the table is a minimum, so we have to
arrange to skip the extra bytes. */
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf) switch(c)
{
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
case OP_STAR:
case OP_MINSTAR:
case OP_PLUS:
case OP_MINPLUS:
case OP_QUERY:
case OP_MINQUERY:
case OP_UPTO:
case OP_MINUPTO:
case OP_EXACT:
case OP_POSSTAR:
case OP_POSPLUS:
case OP_POSQUERY:
case OP_POSUPTO:
case OP_STARI:
case OP_MINSTARI:
case OP_PLUSI:
case OP_MINPLUSI:
case OP_QUERYI:
case OP_MINQUERYI:
case OP_UPTOI:
case OP_MINUPTOI:
case OP_EXACTI:
case OP_POSSTARI:
case OP_POSPLUSI:
case OP_POSQUERYI:
case OP_POSUPTOI:
case OP_NOTSTAR:
case OP_NOTMINSTAR:
case OP_NOTPLUS:
case OP_NOTMINPLUS:
case OP_NOTQUERY:
case OP_NOTMINQUERY:
case OP_NOTUPTO:
case OP_NOTMINUPTO:
case OP_NOTEXACT:
case OP_NOTPOSSTAR:
case OP_NOTPOSPLUS:
case OP_NOTPOSQUERY:
case OP_NOTPOSUPTO:
case OP_NOTSTARI:
case OP_NOTMINSTARI:
case OP_NOTPLUSI:
case OP_NOTMINPLUSI:
case OP_NOTQUERYI:
case OP_NOTMINQUERYI:
case OP_NOTUPTOI:
case OP_NOTMINUPTOI:
case OP_NOTEXACTI:
case OP_NOTPOSSTARI:
case OP_NOTPOSPLUSI:
case OP_NOTPOSQUERYI:
case OP_NOTPOSUPTOI:
if (HAS_EXTRALEN(code[-1])) code += GET_EXTRALEN(code[-1]);
break;
}
#else
(void)(utf); /* Keep compiler happy by referencing function argument */
#endif
}
}
/*************************************************
* Check for POSIX class syntax *
*************************************************/
/* This function is called when the sequence "[:" or "[." or "[=" is
encountered in a character class. It checks whether this is followed by a
sequence of characters terminated by a matching ":]" or ".]" or "=]". If we
reach an unescaped ']' without the special preceding character, return FALSE.
Originally, this function only recognized a sequence of letters between the
terminators, but it seems that Perl recognizes any sequence of characters,
though of course unknown POSIX names are subsequently rejected. Perl gives an
"Unknown POSIX class" error for [:f\oo:] for example, where previously PCRE
didn't consider this to be a POSIX class. Likewise for [:1234:].
The problem in trying to be exactly like Perl is in the handling of escapes. We
have to be sure that [abc[:x\]pqr] is *not* treated as containing a POSIX
class, but [abc[:x\]pqr:]] is (so that an error can be generated). The code
below handles the special cases \\ and \], but does not try to do any other
escape processing. This makes it different from Perl for cases such as
[:l\ower:] where Perl recognizes it as the POSIX class "lower" but PCRE does
not recognize "l\ower". This is a lesser evil than not diagnosing bad classes
when Perl does, I think.
A user pointed out that PCRE was rejecting [:a[:digit:]] whereas Perl was not.
It seems that the appearance of a nested POSIX class supersedes an apparent
external class. For example, [:a[:digit:]b:] matches "a", "b", ":", or
a digit.
In Perl, unescaped square brackets may also appear as part of class names. For
example, [:a[:abc]b:] gives unknown POSIX class "[:abc]b:]". However, for
[:a[:abc]b][b:] it gives unknown POSIX class "[:abc]b][b:]", which does not
seem right at all. PCRE does not allow closing square brackets in POSIX class
names.
Arguments:
ptr pointer to the initial [
endptr where to return the end pointer
Returns: TRUE or FALSE
*/
static BOOL
check_posix_syntax(const pcre_uchar *ptr, const pcre_uchar **endptr)
{
pcre_uchar terminator; /* Don't combine these lines; the Solaris cc */
terminator = *(++ptr); /* compiler warns about "non-constant" initializer. */
for (++ptr; *ptr != CHAR_NULL; ptr++)
{
if (*ptr == CHAR_BACKSLASH &&
(ptr[1] == CHAR_RIGHT_SQUARE_BRACKET ||
ptr[1] == CHAR_BACKSLASH))
ptr++;
else if ((*ptr == CHAR_LEFT_SQUARE_BRACKET && ptr[1] == terminator) ||
*ptr == CHAR_RIGHT_SQUARE_BRACKET) return FALSE;
else if (*ptr == terminator && ptr[1] == CHAR_RIGHT_SQUARE_BRACKET)
{
*endptr = ptr;
return TRUE;
}
}
return FALSE;
}
/*************************************************
* Check POSIX class name *
*************************************************/
/* This function is called to check the name given in a POSIX-style class entry
such as [:alnum:].
Arguments:
ptr points to the first letter
len the length of the name
Returns: a value representing the name, or -1 if unknown
*/
static int
check_posix_name(const pcre_uchar *ptr, int len)
{
const char *pn = posix_names;
register int yield = 0;
while (posix_name_lengths[yield] != 0)
{
if (len == posix_name_lengths[yield] &&
STRNCMP_UC_C8(ptr, pn, (unsigned int)len) == 0) return yield;
pn += posix_name_lengths[yield] + 1;
yield++;
}
return -1;
}
/*************************************************
* Adjust OP_RECURSE items in repeated group *
*************************************************/
/* OP_RECURSE items contain an offset from the start of the regex to the group
that is referenced. This means that groups can be replicated for fixed
repetition simply by copying (because the recursion is allowed to refer to
earlier groups that are outside the current group). However, when a group is
optional (i.e. the minimum quantifier is zero), OP_BRAZERO or OP_SKIPZERO is
inserted before it, after it has been compiled. This means that any OP_RECURSE
items within it that refer to the group itself or any contained groups have to
have their offsets adjusted. That one of the jobs of this function. Before it
is called, the partially compiled regex must be temporarily terminated with
OP_END.
This function has been extended to cope with forward references for recursions
and subroutine calls. It must check the list of such references for the
group we are dealing with. If it finds that one of the recursions in the
current group is on this list, it does not adjust the value in the reference
(which is a group number). After the group has been scanned, all the offsets in
the forward reference list for the group are adjusted.
Arguments:
group points to the start of the group
adjust the amount by which the group is to be moved
utf TRUE in UTF-8 / UTF-16 / UTF-32 mode
cd contains pointers to tables etc.
save_hwm_offset the hwm forward reference offset at the start of the group
Returns: nothing
*/
static void
adjust_recurse(pcre_uchar *group, int adjust, BOOL utf, compile_data *cd,
size_t save_hwm_offset)
{
int offset;
pcre_uchar *hc;
pcre_uchar *ptr = group;
while ((ptr = (pcre_uchar *)find_recurse(ptr, utf)) != NULL)
{
for (hc = (pcre_uchar *)cd->start_workspace + save_hwm_offset; hc < cd->hwm;
hc += LINK_SIZE)
{
offset = (int)GET(hc, 0);
if (cd->start_code + offset == ptr + 1) break;
}
/* If we have not found this recursion on the forward reference list, adjust
the recursion's offset if it's after the start of this group. */
if (hc >= cd->hwm)
{
offset = (int)GET(ptr, 1);
if (cd->start_code + offset >= group) PUT(ptr, 1, offset + adjust);
}
ptr += 1 + LINK_SIZE;
}
/* Now adjust all forward reference offsets for the group. */
for (hc = (pcre_uchar *)cd->start_workspace + save_hwm_offset; hc < cd->hwm;
hc += LINK_SIZE)
{
offset = (int)GET(hc, 0);
PUT(hc, 0, offset + adjust);
}
}
/*************************************************
* Insert an automatic callout point *
*************************************************/
/* This function is called when the PCRE_AUTO_CALLOUT option is set, to insert
callout points before each pattern item.
Arguments:
code current code pointer
ptr current pattern pointer
cd pointers to tables etc
Returns: new code pointer
*/
static pcre_uchar *
auto_callout(pcre_uchar *code, const pcre_uchar *ptr, compile_data *cd)
{
*code++ = OP_CALLOUT;
*code++ = 255;
PUT(code, 0, (int)(ptr - cd->start_pattern)); /* Pattern offset */
PUT(code, LINK_SIZE, 0); /* Default length */
return code + 2 * LINK_SIZE;
}
/*************************************************
* Complete a callout item *
*************************************************/
/* A callout item contains the length of the next item in the pattern, which
we can't fill in till after we have reached the relevant point. This is used
for both automatic and manual callouts.
Arguments:
previous_callout points to previous callout item
ptr current pattern pointer
cd pointers to tables etc
Returns: nothing
*/
static void
complete_callout(pcre_uchar *previous_callout, const pcre_uchar *ptr, compile_data *cd)
{
int length = (int)(ptr - cd->start_pattern - GET(previous_callout, 2));
PUT(previous_callout, 2 + LINK_SIZE, length);
}
#ifdef SUPPORT_UCP
/*************************************************
* Get othercase range *
*************************************************/
/* This function is passed the start and end of a class range, in UTF-8 mode
with UCP support. It searches up the characters, looking for ranges of
characters in the "other" case. Each call returns the next one, updating the
start address. A character with multiple other cases is returned on its own
with a special return value.
Arguments:
cptr points to starting character value; updated
d end value
ocptr where to put start of othercase range
odptr where to put end of othercase range
Yield: -1 when no more
0 when a range is returned
>0 the CASESET offset for char with multiple other cases
in this case, ocptr contains the original
*/
static int
get_othercase_range(pcre_uint32 *cptr, pcre_uint32 d, pcre_uint32 *ocptr,
pcre_uint32 *odptr)
{
pcre_uint32 c, othercase, next;
unsigned int co;
/* Find the first character that has an other case. If it has multiple other
cases, return its case offset value. */
for (c = *cptr; c <= d; c++)
{
if ((co = UCD_CASESET(c)) != 0)
{
*ocptr = c++; /* Character that has the set */
*cptr = c; /* Rest of input range */
return (int)co;
}
if ((othercase = UCD_OTHERCASE(c)) != c) break;
}
if (c > d) return -1; /* Reached end of range */
/* Found a character that has a single other case. Search for the end of the
range, which is either the end of the input range, or a character that has zero
or more than one other cases. */
*ocptr = othercase;
next = othercase + 1;
for (++c; c <= d; c++)
{
if ((co = UCD_CASESET(c)) != 0 || UCD_OTHERCASE(c) != next) break;
next++;
}
*odptr = next - 1; /* End of othercase range */
*cptr = c; /* Rest of input range */
return 0;
}
#endif /* SUPPORT_UCP */
/*************************************************
* Add a character or range to a class *
*************************************************/
/* This function packages up the logic of adding a character or range of
characters to a class. The character values in the arguments will be within the
valid values for the current mode (8-bit, 16-bit, UTF, etc). This function is
mutually recursive with the function immediately below.
Arguments:
classbits the bit map for characters < 256
uchardptr points to the pointer for extra data
options the options word
cd contains pointers to tables etc.
start start of range character
end end of range character
Returns: the number of < 256 characters added
the pointer to extra data is updated
*/
static int
add_to_class(pcre_uint8 *classbits, pcre_uchar **uchardptr, int options,
compile_data *cd, pcre_uint32 start, pcre_uint32 end)
{
pcre_uint32 c;
pcre_uint32 classbits_end = (end <= 0xff ? end : 0xff);
int n8 = 0;
((void)uchardptr);
((void)propposstab);
((void)catposstab);
((void)posspropstab);
/* If caseless matching is required, scan the range and process alternate
cases. In Unicode, there are 8-bit characters that have alternate cases that
are greater than 255 and vice-versa. Sometimes we can just extend the original
range. */
if ((options & PCRE_CASELESS) != 0)
{
#ifdef SUPPORT_UCP
if ((options & PCRE_UTF8) != 0)
{
int rc;
pcre_uint32 oc, od;
options &= ~PCRE_CASELESS; /* Remove for recursive calls */
c = start;
while ((rc = get_othercase_range(&c, end, &oc, &od)) >= 0)
{
/* Handle a single character that has more than one other case. */
if (rc > 0) n8 += add_list_to_class(classbits, uchardptr, options, cd,
PRIV(ucd_caseless_sets) + rc, oc);
/* Do nothing if the other case range is within the original range. */
else if (oc >= start && od <= end) continue;
/* Extend the original range if there is overlap, noting that if oc < c, we
can't have od > end because a subrange is always shorter than the basic
range. Otherwise, use a recursive call to add the additional range. */
else if (oc < start && od >= start - 1) start = oc; /* Extend downwards */
else if (od > end && oc <= end + 1)
{
end = od; /* Extend upwards */
if (end > classbits_end) classbits_end = (end <= 0xff ? end : 0xff);
}
else n8 += add_to_class(classbits, uchardptr, options, cd, oc, od);
}
}
else
#endif /* SUPPORT_UCP */
/* Not UTF-mode, or no UCP */
for (c = start; c <= classbits_end; c++)
{
SETBIT(classbits, cd->fcc[c]);
n8++;
}
}
/* Now handle the original range. Adjust the final value according to the bit
length - this means that the same lists of (e.g.) horizontal spaces can be used
in all cases. */
#if defined COMPILE_PCRE8
#ifdef SUPPORT_UTF
if ((options & PCRE_UTF8) == 0)
#endif
if (end > 0xff) end = 0xff;
#elif defined COMPILE_PCRE16
#ifdef SUPPORT_UTF
if ((options & PCRE_UTF16) == 0)
#endif
if (end > 0xffff) end = 0xffff;
#endif /* COMPILE_PCRE[8|16] */
/* Use the bitmap for characters < 256. Otherwise use extra data.*/
for (c = start; c <= classbits_end; c++)
{
/* Regardless of start, c will always be <= 255. */
SETBIT(classbits, c);
n8++;
}
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
if (start <= 0xff) start = 0xff + 1;
if (end >= start)
{
pcre_uchar *uchardata = *uchardptr;
#ifdef SUPPORT_UTF
if ((options & PCRE_UTF8) != 0) /* All UTFs use the same flag bit */
{
if (start < end)
{
*uchardata++ = XCL_RANGE;
uchardata += PRIV(ord2utf)(start, uchardata);
uchardata += PRIV(ord2utf)(end, uchardata);
}
else if (start == end)
{
*uchardata++ = XCL_SINGLE;
uchardata += PRIV(ord2utf)(start, uchardata);
}
}
else
#endif /* SUPPORT_UTF */
/* Without UTF support, character values are constrained by the bit length,
and can only be > 256 for 16-bit and 32-bit libraries. */
#ifdef COMPILE_PCRE8
{}
#else
if (start < end)
{
*uchardata++ = XCL_RANGE;
*uchardata++ = start;
*uchardata++ = end;
}
else if (start == end)
{
*uchardata++ = XCL_SINGLE;
*uchardata++ = start;
}
#endif
*uchardptr = uchardata; /* Updata extra data pointer */
}
#endif /* SUPPORT_UTF || !COMPILE_PCRE8 */
return n8; /* Number of 8-bit characters */
}
/*************************************************
* Add a list of characters to a class *
*************************************************/
/* This function is used for adding a list of case-equivalent characters to a
class, and also for adding a list of horizontal or vertical whitespace. If the
list is in order (which it should be), ranges of characters are detected and
handled appropriately. This function is mutually recursive with the function
above.
Arguments:
classbits the bit map for characters < 256
uchardptr points to the pointer for extra data
options the options word
cd contains pointers to tables etc.
p points to row of 32-bit values, terminated by NOTACHAR
except character to omit; this is used when adding lists of
case-equivalent characters to avoid including the one we
already know about
Returns: the number of < 256 characters added
the pointer to extra data is updated
*/
static int
add_list_to_class(pcre_uint8 *classbits, pcre_uchar **uchardptr, int options,
compile_data *cd, const pcre_uint32 *p, unsigned int except)
{
int n8 = 0;
while (p[0] < NOTACHAR)
{
int n = 0;
if (p[0] != except)
{
while(p[n+1] == p[0] + n + 1) n++;
n8 += add_to_class(classbits, uchardptr, options, cd, p[0], p[n]);
}
p += n + 1;
}
return n8;
}
/*************************************************
* Add characters not in a list to a class *
*************************************************/
/* This function is used for adding the complement of a list of horizontal or
vertical whitespace to a class. The list must be in order.
Arguments:
classbits the bit map for characters < 256
uchardptr points to the pointer for extra data
options the options word
cd contains pointers to tables etc.
p points to row of 32-bit values, terminated by NOTACHAR
Returns: the number of < 256 characters added
the pointer to extra data is updated
*/
static int
add_not_list_to_class(pcre_uint8 *classbits, pcre_uchar **uchardptr,
int options, compile_data *cd, const pcre_uint32 *p)
{
BOOL utf = (options & PCRE_UTF8) != 0;
int n8 = 0;
if (p[0] > 0)
n8 += add_to_class(classbits, uchardptr, options, cd, 0, p[0] - 1);
while (p[0] < NOTACHAR)
{
while (p[1] == p[0] + 1) p++;
n8 += add_to_class(classbits, uchardptr, options, cd, p[0] + 1,
(p[1] == NOTACHAR) ? (utf ? 0x10ffffu : 0xffffffffu) : p[1] - 1);
p++;
}
return n8;
}
/*************************************************
* Compile one branch *
*************************************************/
/* Scan the pattern, compiling it into the a vector. If the options are
changed during the branch, the pointer is used to change the external options
bits. This function is used during the pre-compile phase when we are trying
to find out the amount of memory needed, as well as during the real compile
phase. The value of lengthptr distinguishes the two phases.
Arguments:
optionsptr pointer to the option bits
codeptr points to the pointer to the current code point
ptrptr points to the current pattern pointer
errorcodeptr points to error code variable
firstcharptr place to put the first required character
firstcharflagsptr place to put the first character flags, or a negative number
reqcharptr place to put the last required character
reqcharflagsptr place to put the last required character flags, or a negative number
bcptr points to current branch chain
cond_depth conditional nesting depth
cd contains pointers to tables etc.
lengthptr NULL during the real compile phase
points to length accumulator during pre-compile phase
Returns: TRUE on success
FALSE, with *errorcodeptr set non-zero on error
*/
static BOOL
compile_branch(int *optionsptr, pcre_uchar **codeptr,
const pcre_uchar **ptrptr, int *errorcodeptr,
pcre_uint32 *firstcharptr, pcre_int32 *firstcharflagsptr,
pcre_uint32 *reqcharptr, pcre_int32 *reqcharflagsptr,
branch_chain *bcptr, int cond_depth,
compile_data *cd, int *lengthptr)
{
int repeat_type, op_type;
int repeat_min = 0, repeat_max = 0; /* To please picky compilers */
int bravalue = 0;
int greedy_default, greedy_non_default;
pcre_uint32 firstchar, reqchar;
pcre_int32 firstcharflags, reqcharflags;
pcre_uint32 zeroreqchar, zerofirstchar;
pcre_int32 zeroreqcharflags, zerofirstcharflags;
pcre_int32 req_caseopt, reqvary, tempreqvary;
int options = *optionsptr; /* May change dynamically */
int after_manual_callout = 0;
int length_prevgroup = 0;
register pcre_uint32 c;
int escape;
register pcre_uchar *code = *codeptr;
pcre_uchar *last_code = code;
pcre_uchar *orig_code = code;
pcre_uchar *tempcode;
BOOL inescq = FALSE;
BOOL groupsetfirstchar = FALSE;
const pcre_uchar *ptr = *ptrptr;
const pcre_uchar *tempptr;
const pcre_uchar *nestptr = NULL;
pcre_uchar *previous = NULL;
pcre_uchar *previous_callout = NULL;
size_t item_hwm_offset = 0;
pcre_uint8 classbits[32];
/* We can fish out the UTF-8 setting once and for all into a BOOL, but we
must not do this for other options (e.g. PCRE_EXTENDED) because they may change
dynamically as we process the pattern. */
#ifdef SUPPORT_UTF
/* PCRE_UTF[16|32] have the same value as PCRE_UTF8. */
BOOL utf = (options & PCRE_UTF8) != 0;
#ifndef COMPILE_PCRE32
pcre_uchar utf_chars[6];
#endif
#else
BOOL utf = FALSE;
#endif
/* Helper variables for OP_XCLASS opcode (for characters > 255). We define
class_uchardata always so that it can be passed to add_to_class() always,
though it will not be used in non-UTF 8-bit cases. This avoids having to supply
alternative calls for the different cases. */
pcre_uchar *class_uchardata;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
BOOL xclass;
pcre_uchar *class_uchardata_base;
#endif
#ifdef PCRE_DEBUG
if (lengthptr != NULL) DPRINTF((">> start branch\n"));
#endif
/* Set up the default and non-default settings for greediness */
greedy_default = ((options & PCRE_UNGREEDY) != 0);
greedy_non_default = greedy_default ^ 1;
/* Initialize no first byte, no required byte. REQ_UNSET means "no char
matching encountered yet". It gets changed to REQ_NONE if we hit something that
matches a non-fixed char first char; reqchar just remains unset if we never
find one.
When we hit a repeat whose minimum is zero, we may have to adjust these values
to take the zero repeat into account. This is implemented by setting them to
zerofirstbyte and zeroreqchar when such a repeat is encountered. The individual
item types that can be repeated set these backoff variables appropriately. */
firstchar = reqchar = zerofirstchar = zeroreqchar = 0;
firstcharflags = reqcharflags = zerofirstcharflags = zeroreqcharflags = REQ_UNSET;
/* The variable req_caseopt contains either the REQ_CASELESS value
or zero, according to the current setting of the caseless flag. The
REQ_CASELESS leaves the lower 28 bit empty. It is added into the
firstchar or reqchar variables to record the case status of the
value. This is used only for ASCII characters. */
req_caseopt = ((options & PCRE_CASELESS) != 0)? REQ_CASELESS:0;
/* Switch on next character until the end of the branch */
for (;; ptr++)
{
BOOL negate_class;
BOOL should_flip_negation;
BOOL possessive_quantifier;
BOOL is_quantifier;
BOOL is_recurse;
BOOL reset_bracount;
int class_has_8bitchar;
int class_one_char;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
BOOL xclass_has_prop;
#endif
int newoptions;
int recno;
int refsign;
int skipbytes;
pcre_uint32 subreqchar, subfirstchar;
pcre_int32 subreqcharflags, subfirstcharflags;
int terminator;
unsigned int mclength;
unsigned int tempbracount;
pcre_uint32 ec;
pcre_uchar mcbuffer[8];
/* Come here to restart the loop without advancing the pointer. */
REDO_LOOP:
/* Get next character in the pattern */
c = *ptr;
/* If we are at the end of a nested substitution, revert to the outer level
string. Nesting only happens one level deep. */
if (c == CHAR_NULL && nestptr != NULL)
{
ptr = nestptr;
nestptr = NULL;
c = *ptr;
}
/* If we are in the pre-compile phase, accumulate the length used for the
previous cycle of this loop. */
if (lengthptr != NULL)
{
#ifdef PCRE_DEBUG
if (code > cd->hwm) cd->hwm = code; /* High water info */
#endif
if (code > cd->start_workspace + cd->workspace_size -
WORK_SIZE_SAFETY_MARGIN) /* Check for overrun */
{
*errorcodeptr = (code >= cd->start_workspace + cd->workspace_size)?
ERR52 : ERR87;
goto FAILED;
}
/* There is at least one situation where code goes backwards: this is the
case of a zero quantifier after a class (e.g. [ab]{0}). At compile time,
the class is simply eliminated. However, it is created first, so we have to
allow memory for it. Therefore, don't ever reduce the length at this point.
*/
if (code < last_code) code = last_code;
/* Paranoid check for integer overflow */
if (OFLOW_MAX - *lengthptr < code - last_code)
{
*errorcodeptr = ERR20;
goto FAILED;
}
*lengthptr += (int)(code - last_code);
DPRINTF(("length=%d added %d c=%c (0x%x)\n", *lengthptr,
(int)(code - last_code), c, c));
/* If "previous" is set and it is not at the start of the work space, move
it back to there, in order to avoid filling up the work space. Otherwise,
if "previous" is NULL, reset the current code pointer to the start. */
if (previous != NULL)
{
if (previous > orig_code)
{
memmove(orig_code, previous, IN_UCHARS(code - previous));
code -= previous - orig_code;
previous = orig_code;
}
}
else code = orig_code;
/* Remember where this code item starts so we can pick up the length
next time round. */
last_code = code;
}
/* In the real compile phase, just check the workspace used by the forward
reference list. */
else if (cd->hwm > cd->start_workspace + cd->workspace_size)
{
*errorcodeptr = ERR52;
goto FAILED;
}
/* If in \Q...\E, check for the end; if not, we have a literal. Otherwise an
isolated \E is ignored. */
if (c != CHAR_NULL)
{
if (c == CHAR_BACKSLASH && ptr[1] == CHAR_E)
{
inescq = FALSE;
ptr++;
continue;
}
else if (inescq)
{
if (previous_callout != NULL)
{
if (lengthptr == NULL) /* Don't attempt in pre-compile phase */
complete_callout(previous_callout, ptr, cd);
previous_callout = NULL;
}
if ((options & PCRE_AUTO_CALLOUT) != 0)
{
previous_callout = code;
code = auto_callout(code, ptr, cd);
}
goto NORMAL_CHAR;
}
/* Check for the start of a \Q...\E sequence. We must do this here rather
than later in case it is immediately followed by \E, which turns it into a
"do nothing" sequence. */
if (c == CHAR_BACKSLASH && ptr[1] == CHAR_Q)
{
inescq = TRUE;
ptr++;
continue;
}
}
/* In extended mode, skip white space and comments. */
if ((options & PCRE_EXTENDED) != 0)
{
const pcre_uchar *wscptr = ptr;
while (MAX_255(c) && (cd->ctypes[c] & ctype_space) != 0) c = *(++ptr);
if (c == CHAR_NUMBER_SIGN)
{
ptr++;
while (*ptr != CHAR_NULL)
{
if (IS_NEWLINE(ptr)) /* For non-fixed-length newline cases, */
{ /* IS_NEWLINE sets cd->nllen. */
ptr += cd->nllen;
break;
}
ptr++;
#ifdef SUPPORT_UTF
if (utf) FORWARDCHAR(ptr);
#endif
}
}
/* If we skipped any characters, restart the loop. Otherwise, we didn't see
a comment. */
if (ptr > wscptr) goto REDO_LOOP;
}
/* Skip over (?# comments. We need to do this here because we want to know if
the next thing is a quantifier, and these comments may come between an item
and its quantifier. */
if (c == CHAR_LEFT_PARENTHESIS && ptr[1] == CHAR_QUESTION_MARK &&
ptr[2] == CHAR_NUMBER_SIGN)
{
ptr += 3;
while (*ptr != CHAR_NULL && *ptr != CHAR_RIGHT_PARENTHESIS) ptr++;
if (*ptr == CHAR_NULL)
{
*errorcodeptr = ERR18;
goto FAILED;
}
continue;
}
/* See if the next thing is a quantifier. */
is_quantifier =
c == CHAR_ASTERISK || c == CHAR_PLUS || c == CHAR_QUESTION_MARK ||
(c == CHAR_LEFT_CURLY_BRACKET && is_counted_repeat(ptr+1));
/* Fill in length of a previous callout, except when the next thing is a
quantifier or when processing a property substitution string in UCP mode. */
if (!is_quantifier && previous_callout != NULL && nestptr == NULL &&
after_manual_callout-- <= 0)
{
if (lengthptr == NULL) /* Don't attempt in pre-compile phase */
complete_callout(previous_callout, ptr, cd);
previous_callout = NULL;
}
/* Create auto callout, except for quantifiers, or while processing property
strings that are substituted for \w etc in UCP mode. */
if ((options & PCRE_AUTO_CALLOUT) != 0 && !is_quantifier && nestptr == NULL)
{
previous_callout = code;
code = auto_callout(code, ptr, cd);
}
/* Process the next pattern item. */
switch(c)
{
/* ===================================================================*/
case CHAR_NULL: /* The branch terminates at string end */
case CHAR_VERTICAL_LINE: /* or | or ) */
case CHAR_RIGHT_PARENTHESIS:
*firstcharptr = firstchar;
*firstcharflagsptr = firstcharflags;
*reqcharptr = reqchar;
*reqcharflagsptr = reqcharflags;
*codeptr = code;
*ptrptr = ptr;
if (lengthptr != NULL)
{
if (OFLOW_MAX - *lengthptr < code - last_code)
{
*errorcodeptr = ERR20;
goto FAILED;
}
*lengthptr += (int)(code - last_code); /* To include callout length */
DPRINTF((">> end branch\n"));
}
return TRUE;
/* ===================================================================*/
/* Handle single-character metacharacters. In multiline mode, ^ disables
the setting of any following char as a first character. */
case CHAR_CIRCUMFLEX_ACCENT:
previous = NULL;
if ((options & PCRE_MULTILINE) != 0)
{
if (firstcharflags == REQ_UNSET)
zerofirstcharflags = firstcharflags = REQ_NONE;
*code++ = OP_CIRCM;
}
else *code++ = OP_CIRC;
break;
case CHAR_DOLLAR_SIGN:
previous = NULL;
*code++ = ((options & PCRE_MULTILINE) != 0)? OP_DOLLM : OP_DOLL;
break;
/* There can never be a first char if '.' is first, whatever happens about
repeats. The value of reqchar doesn't change either. */
case CHAR_DOT:
if (firstcharflags == REQ_UNSET) firstcharflags = REQ_NONE;
zerofirstchar = firstchar;
zerofirstcharflags = firstcharflags;
zeroreqchar = reqchar;
zeroreqcharflags = reqcharflags;
previous = code;
item_hwm_offset = cd->hwm - cd->start_workspace;
*code++ = ((options & PCRE_DOTALL) != 0)? OP_ALLANY: OP_ANY;
break;
/* ===================================================================*/
/* Character classes. If the included characters are all < 256, we build a
32-byte bitmap of the permitted characters, except in the special case
where there is only one such character. For negated classes, we build the
map as usual, then invert it at the end. However, we use a different opcode
so that data characters > 255 can be handled correctly.
If the class contains characters outside the 0-255 range, a different
opcode is compiled. It may optionally have a bit map for characters < 256,
but those above are are explicitly listed afterwards. A flag byte tells
whether the bitmap is present, and whether this is a negated class or not.
In JavaScript compatibility mode, an isolated ']' causes an error. In
default (Perl) mode, it is treated as a data character. */
case CHAR_RIGHT_SQUARE_BRACKET:
if ((cd->external_options & PCRE_JAVASCRIPT_COMPAT) != 0)
{
*errorcodeptr = ERR64;
goto FAILED;
}
goto NORMAL_CHAR;
/* In another (POSIX) regex library, the ugly syntax [[:<:]] and [[:>:]] is
used for "start of word" and "end of word". As these are otherwise illegal
sequences, we don't break anything by recognizing them. They are replaced
by \b(?=\w) and \b(?<=\w) respectively. Sequences like [a[:<:]] are
erroneous and are handled by the normal code below. */
case CHAR_LEFT_SQUARE_BRACKET:
if (STRNCMP_UC_C8(ptr+1, STRING_WEIRD_STARTWORD, 6) == 0)
{
nestptr = ptr + 7;
ptr = sub_start_of_word;
goto REDO_LOOP;
}
if (STRNCMP_UC_C8(ptr+1, STRING_WEIRD_ENDWORD, 6) == 0)
{
nestptr = ptr + 7;
ptr = sub_end_of_word;
goto REDO_LOOP;
}
/* Handle a real character class. */
previous = code;
item_hwm_offset = cd->hwm - cd->start_workspace;
/* PCRE supports POSIX class stuff inside a class. Perl gives an error if
they are encountered at the top level, so we'll do that too. */
if ((ptr[1] == CHAR_COLON || ptr[1] == CHAR_DOT ||
ptr[1] == CHAR_EQUALS_SIGN) &&
check_posix_syntax(ptr, &tempptr))
{
*errorcodeptr = (ptr[1] == CHAR_COLON)? ERR13 : ERR31;
goto FAILED;
}
/* If the first character is '^', set the negation flag and skip it. Also,
if the first few characters (either before or after ^) are \Q\E or \E we
skip them too. This makes for compatibility with Perl. */
negate_class = FALSE;
for (;;)
{
c = *(++ptr);
if (c == CHAR_BACKSLASH)
{
if (ptr[1] == CHAR_E)
ptr++;
else if (STRNCMP_UC_C8(ptr + 1, STR_Q STR_BACKSLASH STR_E, 3) == 0)
ptr += 3;
else
break;
}
else if (!negate_class && c == CHAR_CIRCUMFLEX_ACCENT)
negate_class = TRUE;
else break;
}
/* Empty classes are allowed in JavaScript compatibility mode. Otherwise,
an initial ']' is taken as a data character -- the code below handles
that. In JS mode, [] must always fail, so generate OP_FAIL, whereas
[^] must match any character, so generate OP_ALLANY. */
if (c == CHAR_RIGHT_SQUARE_BRACKET &&
(cd->external_options & PCRE_JAVASCRIPT_COMPAT) != 0)
{
*code++ = negate_class? OP_ALLANY : OP_FAIL;
if (firstcharflags == REQ_UNSET) firstcharflags = REQ_NONE;
zerofirstchar = firstchar;
zerofirstcharflags = firstcharflags;
break;
}
/* If a class contains a negative special such as \S, we need to flip the
negation flag at the end, so that support for characters > 255 works
correctly (they are all included in the class). */
should_flip_negation = FALSE;
/* Extended class (xclass) will be used when characters > 255
might match. */
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
xclass = FALSE;
class_uchardata = code + LINK_SIZE + 2; /* For XCLASS items */
class_uchardata_base = class_uchardata; /* Save the start */
#endif
/* For optimization purposes, we track some properties of the class:
class_has_8bitchar will be non-zero if the class contains at least one <
256 character; class_one_char will be 1 if the class contains just one
character; xclass_has_prop will be TRUE if unicode property checks
are present in the class. */
class_has_8bitchar = 0;
class_one_char = 0;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
xclass_has_prop = FALSE;
#endif
/* Initialize the 32-char bit map to all zeros. We build the map in a
temporary bit of memory, in case the class contains fewer than two
8-bit characters because in that case the compiled code doesn't use the bit
map. */
memset(classbits, 0, 32 * sizeof(pcre_uint8));
/* Process characters until ] is reached. By writing this as a "do" it
means that an initial ] is taken as a data character. At the start of the
loop, c contains the first byte of the character. */
if (c != CHAR_NULL) do
{
const pcre_uchar *oldptr;
#ifdef SUPPORT_UTF
if (utf && HAS_EXTRALEN(c))
{ /* Braces are required because the */
GETCHARLEN(c, ptr, ptr); /* macro generates multiple statements */
}
#endif
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
/* In the pre-compile phase, accumulate the length of any extra
data and reset the pointer. This is so that very large classes that
contain a zillion > 255 characters no longer overwrite the work space
(which is on the stack). We have to remember that there was XCLASS data,
however. */
if (class_uchardata > class_uchardata_base) xclass = TRUE;
if (lengthptr != NULL && class_uchardata > class_uchardata_base)
{
*lengthptr += (int)(class_uchardata - class_uchardata_base);
class_uchardata = class_uchardata_base;
}
#endif
/* Inside \Q...\E everything is literal except \E */
if (inescq)
{
if (c == CHAR_BACKSLASH && ptr[1] == CHAR_E) /* If we are at \E */
{
inescq = FALSE; /* Reset literal state */
ptr++; /* Skip the 'E' */
continue; /* Carry on with next */
}
goto CHECK_RANGE; /* Could be range if \E follows */
}
/* Handle POSIX class names. Perl allows a negation extension of the
form [:^name:]. A square bracket that doesn't match the syntax is
treated as a literal. We also recognize the POSIX constructions
[.ch.] and [=ch=] ("collating elements") and fault them, as Perl
5.6 and 5.8 do. */
if (c == CHAR_LEFT_SQUARE_BRACKET &&
(ptr[1] == CHAR_COLON || ptr[1] == CHAR_DOT ||
ptr[1] == CHAR_EQUALS_SIGN) && check_posix_syntax(ptr, &tempptr))
{
BOOL local_negate = FALSE;
int posix_class, taboffset, tabopt;
register const pcre_uint8 *cbits = cd->cbits;
pcre_uint8 pbits[32];
if (ptr[1] != CHAR_COLON)
{
*errorcodeptr = ERR31;
goto FAILED;
}
ptr += 2;
if (*ptr == CHAR_CIRCUMFLEX_ACCENT)
{
local_negate = TRUE;
should_flip_negation = TRUE; /* Note negative special */
ptr++;
}
posix_class = check_posix_name(ptr, (int)(tempptr - ptr));
if (posix_class < 0)
{
*errorcodeptr = ERR30;
goto FAILED;
}
/* If matching is caseless, upper and lower are converted to
alpha. This relies on the fact that the class table starts with
alpha, lower, upper as the first 3 entries. */
if ((options & PCRE_CASELESS) != 0 && posix_class <= 2)
posix_class = 0;
/* When PCRE_UCP is set, some of the POSIX classes are converted to
different escape sequences that use Unicode properties \p or \P. Others
that are not available via \p or \P generate XCL_PROP/XCL_NOTPROP
directly. */
#ifdef SUPPORT_UCP
if ((options & PCRE_UCP) != 0)
{
unsigned int ptype = 0;
int pc = posix_class + ((local_negate)? POSIX_SUBSIZE/2 : 0);
/* The posix_substitutes table specifies which POSIX classes can be
converted to \p or \P items. */
if (posix_substitutes[pc] != NULL)
{
nestptr = tempptr + 1;
ptr = posix_substitutes[pc] - 1;
continue;
}
/* There are three other classes that generate special property calls
that are recognized only in an XCLASS. */
else switch(posix_class)
{
case PC_GRAPH:
ptype = PT_PXGRAPH;
/* Fall through */
case PC_PRINT:
if (ptype == 0) ptype = PT_PXPRINT;
/* Fall through */
case PC_PUNCT:
if (ptype == 0) ptype = PT_PXPUNCT;
*class_uchardata++ = local_negate? XCL_NOTPROP : XCL_PROP;
*class_uchardata++ = ptype;
*class_uchardata++ = 0;
xclass_has_prop = TRUE;
ptr = tempptr + 1;
continue;
/* For the other POSIX classes (ascii, cntrl, xdigit) we are going
to fall through to the non-UCP case and build a bit map for
characters with code points less than 256. If we are in a negated
POSIX class, characters with code points greater than 255 must
either all match or all not match. In the special case where we
have not yet generated any xclass data, and this is the final item
in the overall class, we need do nothing: later on, the opcode
OP_NCLASS will be used to indicate that characters greater than 255
are acceptable. If we have already seen an xclass item or one may
follow (we have to assume that it might if this is not the end of
the class), explicitly list all wide codepoints, which will then
either not match or match, depending on whether the class is or is
not negated. */
default:
if (local_negate &&
(xclass || tempptr[2] != CHAR_RIGHT_SQUARE_BRACKET))
{
*class_uchardata++ = XCL_RANGE;
class_uchardata += PRIV(ord2utf)(0x100, class_uchardata);
class_uchardata += PRIV(ord2utf)(0x10ffff, class_uchardata);
}
break;
}
}
#endif
/* In the non-UCP case, or when UCP makes no difference, we build the
bit map for the POSIX class in a chunk of local store because we may be
adding and subtracting from it, and we don't want to subtract bits that
may be in the main map already. At the end we or the result into the
bit map that is being built. */
posix_class *= 3;
/* Copy in the first table (always present) */
memcpy(pbits, cbits + posix_class_maps[posix_class],
32 * sizeof(pcre_uint8));
/* If there is a second table, add or remove it as required. */
taboffset = posix_class_maps[posix_class + 1];
tabopt = posix_class_maps[posix_class + 2];
if (taboffset >= 0)
{
if (tabopt >= 0)
for (c = 0; c < 32; c++) pbits[c] |= cbits[c + taboffset];
else
for (c = 0; c < 32; c++) pbits[c] &= ~cbits[c + taboffset];
}
/* Now see if we need to remove any special characters. An option
value of 1 removes vertical space and 2 removes underscore. */
if (tabopt < 0) tabopt = -tabopt;
if (tabopt == 1) pbits[1] &= ~0x3c;
else if (tabopt == 2) pbits[11] &= 0x7f;
/* Add the POSIX table or its complement into the main table that is
being built and we are done. */
if (local_negate)
for (c = 0; c < 32; c++) classbits[c] |= ~pbits[c];
else
for (c = 0; c < 32; c++) classbits[c] |= pbits[c];
ptr = tempptr + 1;
/* Every class contains at least one < 256 character. */
class_has_8bitchar = 1;
/* Every class contains at least two characters. */
class_one_char = 2;
continue; /* End of POSIX syntax handling */
}
/* Backslash may introduce a single character, or it may introduce one
of the specials, which just set a flag. The sequence \b is a special
case. Inside a class (and only there) it is treated as backspace. We
assume that other escapes have more than one character in them, so
speculatively set both class_has_8bitchar and class_one_char bigger
than one. Unrecognized escapes fall through and are either treated
as literal characters (by default), or are faulted if
PCRE_EXTRA is set. */
if (c == CHAR_BACKSLASH)
{
escape = check_escape(&ptr, &ec, errorcodeptr, cd->bracount, options,
TRUE);
if (*errorcodeptr != 0) goto FAILED;
if (escape == 0) c = ec;
else if (escape == ESC_b) c = CHAR_BS; /* \b is backspace in a class */
else if (escape == ESC_N) /* \N is not supported in a class */
{
*errorcodeptr = ERR71;
goto FAILED;
}
else if (escape == ESC_Q) /* Handle start of quoted string */
{
if (ptr[1] == CHAR_BACKSLASH && ptr[2] == CHAR_E)
{
ptr += 2; /* avoid empty string */
}
else inescq = TRUE;
continue;
}
else if (escape == ESC_E) continue; /* Ignore orphan \E */
else
{
register const pcre_uint8 *cbits = cd->cbits;
/* Every class contains at least two < 256 characters. */
class_has_8bitchar++;
/* Every class contains at least two characters. */
class_one_char += 2;
switch (escape)
{
#ifdef SUPPORT_UCP
case ESC_du: /* These are the values given for \d etc */
case ESC_DU: /* when PCRE_UCP is set. We replace the */
case ESC_wu: /* escape sequence with an appropriate \p */
case ESC_WU: /* or \P to test Unicode properties instead */
case ESC_su: /* of the default ASCII testing. */
case ESC_SU:
nestptr = ptr;
ptr = substitutes[escape - ESC_DU] - 1; /* Just before substitute */
class_has_8bitchar--; /* Undo! */
continue;
#endif
case ESC_d:
for (c = 0; c < 32; c++) classbits[c] |= cbits[c+cbit_digit];
continue;
case ESC_D:
should_flip_negation = TRUE;
for (c = 0; c < 32; c++) classbits[c] |= ~cbits[c+cbit_digit];
continue;
case ESC_w:
for (c = 0; c < 32; c++) classbits[c] |= cbits[c+cbit_word];
continue;
case ESC_W:
should_flip_negation = TRUE;
for (c = 0; c < 32; c++) classbits[c] |= ~cbits[c+cbit_word];
continue;
/* Perl 5.004 onwards omitted VT from \s, but restored it at Perl
5.18. Before PCRE 8.34, we had to preserve the VT bit if it was
previously set by something earlier in the character class.
Luckily, the value of CHAR_VT is 0x0b in both ASCII and EBCDIC, so
we could just adjust the appropriate bit. From PCRE 8.34 we no
longer treat \s and \S specially. */
case ESC_s:
for (c = 0; c < 32; c++) classbits[c] |= cbits[c+cbit_space];
continue;
case ESC_S:
should_flip_negation = TRUE;
for (c = 0; c < 32; c++) classbits[c] |= ~cbits[c+cbit_space];
continue;
/* The rest apply in both UCP and non-UCP cases. */
case ESC_h:
(void)add_list_to_class(classbits, &class_uchardata, options, cd,
PRIV(hspace_list), NOTACHAR);
continue;
case ESC_H:
(void)add_not_list_to_class(classbits, &class_uchardata, options,
cd, PRIV(hspace_list));
continue;
case ESC_v:
(void)add_list_to_class(classbits, &class_uchardata, options, cd,
PRIV(vspace_list), NOTACHAR);
continue;
case ESC_V:
(void)add_not_list_to_class(classbits, &class_uchardata, options,
cd, PRIV(vspace_list));
continue;
case ESC_p:
case ESC_P:
#ifdef SUPPORT_UCP
{
BOOL negated;
unsigned int ptype = 0, pdata = 0;
if (!get_ucp(&ptr, &negated, &ptype, &pdata, errorcodeptr))
goto FAILED;
*class_uchardata++ = ((escape == ESC_p) != negated)?
XCL_PROP : XCL_NOTPROP;
*class_uchardata++ = ptype;
*class_uchardata++ = pdata;
xclass_has_prop = TRUE;
class_has_8bitchar--; /* Undo! */
continue;
}
#else
*errorcodeptr = ERR45;
goto FAILED;
#endif
/* Unrecognized escapes are faulted if PCRE is running in its
strict mode. By default, for compatibility with Perl, they are
treated as literals. */
default:
if ((options & PCRE_EXTRA) != 0)
{
*errorcodeptr = ERR7;
goto FAILED;
}
class_has_8bitchar--; /* Undo the speculative increase. */
class_one_char -= 2; /* Undo the speculative increase. */
c = *ptr; /* Get the final character and fall through */
break;
}
}
/* Fall through if the escape just defined a single character (c >= 0).
This may be greater than 256. */
escape = 0;
} /* End of backslash handling */
/* A character may be followed by '-' to form a range. However, Perl does
not permit ']' to be the end of the range. A '-' character at the end is
treated as a literal. Perl ignores orphaned \E sequences entirely. The
code for handling \Q and \E is messy. */
CHECK_RANGE:
while (ptr[1] == CHAR_BACKSLASH && ptr[2] == CHAR_E)
{
inescq = FALSE;
ptr += 2;
}
oldptr = ptr;
/* Remember if \r or \n were explicitly used */
if (c == CHAR_CR || c == CHAR_NL) cd->external_flags |= PCRE_HASCRORLF;
/* Check for range */
if (!inescq && ptr[1] == CHAR_MINUS)
{
pcre_uint32 d;
ptr += 2;
while (*ptr == CHAR_BACKSLASH && ptr[1] == CHAR_E) ptr += 2;
/* If we hit \Q (not followed by \E) at this point, go into escaped
mode. */
while (*ptr == CHAR_BACKSLASH && ptr[1] == CHAR_Q)
{
ptr += 2;
if (*ptr == CHAR_BACKSLASH && ptr[1] == CHAR_E)
{ ptr += 2; continue; }
inescq = TRUE;
break;
}
/* Minus (hyphen) at the end of a class is treated as a literal, so put
back the pointer and jump to handle the character that preceded it. */
if (*ptr == CHAR_NULL || (!inescq && *ptr == CHAR_RIGHT_SQUARE_BRACKET))
{
ptr = oldptr;
goto CLASS_SINGLE_CHARACTER;
}
/* Otherwise, we have a potential range; pick up the next character */
#ifdef SUPPORT_UTF
if (utf)
{ /* Braces are required because the */
GETCHARLEN(d, ptr, ptr); /* macro generates multiple statements */
}
else
#endif
d = *ptr; /* Not UTF-8 mode */
/* The second part of a range can be a single-character escape
sequence, but not any of the other escapes. Perl treats a hyphen as a
literal in such circumstances. However, in Perl's warning mode, a
warning is given, so PCRE now faults it as it is almost certainly a
mistake on the user's part. */
if (!inescq)
{
if (d == CHAR_BACKSLASH)
{
int descape;
descape = check_escape(&ptr, &d, errorcodeptr, cd->bracount, options, TRUE);
if (*errorcodeptr != 0) goto FAILED;
/* 0 means a character was put into d; \b is backspace; any other
special causes an error. */
if (descape != 0)
{
if (descape == ESC_b) d = CHAR_BS; else
{
*errorcodeptr = ERR83;
goto FAILED;
}
}
}
/* A hyphen followed by a POSIX class is treated in the same way. */
else if (d == CHAR_LEFT_SQUARE_BRACKET &&
(ptr[1] == CHAR_COLON || ptr[1] == CHAR_DOT ||
ptr[1] == CHAR_EQUALS_SIGN) &&
check_posix_syntax(ptr, &tempptr))
{
*errorcodeptr = ERR83;
goto FAILED;
}
}
/* Check that the two values are in the correct order. Optimize
one-character ranges. */
if (d < c)
{
*errorcodeptr = ERR8;
goto FAILED;
}
if (d == c) goto CLASS_SINGLE_CHARACTER; /* A few lines below */
/* We have found a character range, so single character optimizations
cannot be done anymore. Any value greater than 1 indicates that there
is more than one character. */
class_one_char = 2;
/* Remember an explicit \r or \n, and add the range to the class. */
if (d == CHAR_CR || d == CHAR_NL) cd->external_flags |= PCRE_HASCRORLF;
class_has_8bitchar +=
add_to_class(classbits, &class_uchardata, options, cd, c, d);
continue; /* Go get the next char in the class */
}
/* Handle a single character - we can get here for a normal non-escape
char, or after \ that introduces a single character or for an apparent
range that isn't. Only the value 1 matters for class_one_char, so don't
increase it if it is already 2 or more ... just in case there's a class
with a zillion characters in it. */
CLASS_SINGLE_CHARACTER:
if (class_one_char < 2) class_one_char++;
/* If xclass_has_prop is false and class_one_char is 1, we have the first
single character in the class, and there have been no prior ranges, or
XCLASS items generated by escapes. If this is the final character in the
class, we can optimize by turning the item into a 1-character OP_CHAR[I]
if it's positive, or OP_NOT[I] if it's negative. In the positive case, it
can cause firstchar to be set. Otherwise, there can be no first char if
this item is first, whatever repeat count may follow. In the case of
reqchar, save the previous value for reinstating. */
if (!inescq &&
#ifdef SUPPORT_UCP
!xclass_has_prop &&
#endif
class_one_char == 1 && ptr[1] == CHAR_RIGHT_SQUARE_BRACKET)
{
ptr++;
zeroreqchar = reqchar;
zeroreqcharflags = reqcharflags;
if (negate_class)
{
#ifdef SUPPORT_UCP
int d;
#endif
if (firstcharflags == REQ_UNSET) firstcharflags = REQ_NONE;
zerofirstchar = firstchar;
zerofirstcharflags = firstcharflags;
/* For caseless UTF-8 mode when UCP support is available, check
whether this character has more than one other case. If so, generate
a special OP_NOTPROP item instead of OP_NOTI. */
#ifdef SUPPORT_UCP
if (utf && (options & PCRE_CASELESS) != 0 &&
(d = UCD_CASESET(c)) != 0)
{
*code++ = OP_NOTPROP;
*code++ = PT_CLIST;
*code++ = d;
}
else
#endif
/* Char has only one other case, or UCP not available */
{
*code++ = ((options & PCRE_CASELESS) != 0)? OP_NOTI: OP_NOT;
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf && c > MAX_VALUE_FOR_SINGLE_CHAR)
code += PRIV(ord2utf)(c, code);
else
#endif
*code++ = c;
}
/* We are finished with this character class */
goto END_CLASS;
}
/* For a single, positive character, get the value into mcbuffer, and
then we can handle this with the normal one-character code. */
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf && c > MAX_VALUE_FOR_SINGLE_CHAR)
mclength = PRIV(ord2utf)(c, mcbuffer);
else
#endif
{
mcbuffer[0] = c;
mclength = 1;
}
goto ONE_CHAR;
} /* End of 1-char optimization */
/* There is more than one character in the class, or an XCLASS item
has been generated. Add this character to the class. */
class_has_8bitchar +=
add_to_class(classbits, &class_uchardata, options, cd, c, c);
}
/* Loop until ']' reached. This "while" is the end of the "do" far above.
If we are at the end of an internal nested string, revert to the outer
string. */
while (((c = *(++ptr)) != CHAR_NULL ||
(nestptr != NULL &&
(ptr = nestptr, nestptr = NULL, c = *(++ptr)) != CHAR_NULL)) &&
(c != CHAR_RIGHT_SQUARE_BRACKET || inescq));
/* Check for missing terminating ']' */
if (c == CHAR_NULL)
{
*errorcodeptr = ERR6;
goto FAILED;
}
/* We will need an XCLASS if data has been placed in class_uchardata. In
the second phase this is a sufficient test. However, in the pre-compile
phase, class_uchardata gets emptied to prevent workspace overflow, so it
only if the very last character in the class needs XCLASS will it contain
anything at this point. For this reason, xclass gets set TRUE above when
uchar_classdata is emptied, and that's why this code is the way it is here
instead of just doing a test on class_uchardata below. */
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
if (class_uchardata > class_uchardata_base) xclass = TRUE;
#endif
/* If this is the first thing in the branch, there can be no first char
setting, whatever the repeat count. Any reqchar setting must remain
unchanged after any kind of repeat. */
if (firstcharflags == REQ_UNSET) firstcharflags = REQ_NONE;
zerofirstchar = firstchar;
zerofirstcharflags = firstcharflags;
zeroreqchar = reqchar;
zeroreqcharflags = reqcharflags;
/* If there are characters with values > 255, we have to compile an
extended class, with its own opcode, unless there was a negated special
such as \S in the class, and PCRE_UCP is not set, because in that case all
characters > 255 are in the class, so any that were explicitly given as
well can be ignored. If (when there are explicit characters > 255 that must
be listed) there are no characters < 256, we can omit the bitmap in the
actual compiled code. */
#ifdef SUPPORT_UTF
if (xclass && (xclass_has_prop || !should_flip_negation ||
(options & PCRE_UCP) != 0))
#elif !defined COMPILE_PCRE8
if (xclass && (xclass_has_prop || !should_flip_negation))
#endif
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
{
/* For non-UCP wide characters, in a non-negative class containing \S or
similar (should_flip_negation is set), all characters greater than 255
must be in the class. */
if (
#if defined COMPILE_PCRE8
utf &&
#endif
should_flip_negation && !negate_class && (options & PCRE_UCP) == 0)
{
*class_uchardata++ = XCL_RANGE;
if (utf) /* Will always be utf in the 8-bit library */
{
class_uchardata += PRIV(ord2utf)(0x100, class_uchardata);
class_uchardata += PRIV(ord2utf)(0x10ffff, class_uchardata);
}
else /* Can only happen for the 16-bit & 32-bit libraries */
{
#if defined COMPILE_PCRE16
*class_uchardata++ = 0x100;
*class_uchardata++ = 0xffffu;
#elif defined COMPILE_PCRE32
*class_uchardata++ = 0x100;
*class_uchardata++ = 0xffffffffu;
#endif
}
}
*class_uchardata++ = XCL_END; /* Marks the end of extra data */
*code++ = OP_XCLASS;
code += LINK_SIZE;
*code = negate_class? XCL_NOT:0;
if (xclass_has_prop) *code |= XCL_HASPROP;
/* If the map is required, move up the extra data to make room for it;
otherwise just move the code pointer to the end of the extra data. */
if (class_has_8bitchar > 0)
{
*code++ |= XCL_MAP;
memmove(code + (32 / sizeof(pcre_uchar)), code,
IN_UCHARS(class_uchardata - code));
if (negate_class && !xclass_has_prop)
for (c = 0; c < 32; c++) classbits[c] = ~classbits[c];
memcpy(code, classbits, 32);
code = class_uchardata + (32 / sizeof(pcre_uchar));
}
else code = class_uchardata;
/* Now fill in the complete length of the item */
PUT(previous, 1, (int)(code - previous));
break; /* End of class handling */
}
/* Even though any XCLASS list is now discarded, we must allow for
its memory. */
if (lengthptr != NULL)
*lengthptr += (int)(class_uchardata - class_uchardata_base);
#endif
/* If there are no characters > 255, or they are all to be included or
excluded, set the opcode to OP_CLASS or OP_NCLASS, depending on whether the
whole class was negated and whether there were negative specials such as \S
(non-UCP) in the class. Then copy the 32-byte map into the code vector,
negating it if necessary. */
*code++ = (negate_class == should_flip_negation) ? OP_CLASS : OP_NCLASS;
if (lengthptr == NULL) /* Save time in the pre-compile phase */
{
if (negate_class)
for (c = 0; c < 32; c++) classbits[c] = ~classbits[c];
memcpy(code, classbits, 32);
}
code += 32 / sizeof(pcre_uchar);
END_CLASS:
break;
/* ===================================================================*/
/* Various kinds of repeat; '{' is not necessarily a quantifier, but this
has been tested above. */
case CHAR_LEFT_CURLY_BRACKET:
if (!is_quantifier) goto NORMAL_CHAR;
ptr = read_repeat_counts(ptr+1, &repeat_min, &repeat_max, errorcodeptr);
if (*errorcodeptr != 0) goto FAILED;
goto REPEAT;
case CHAR_ASTERISK:
repeat_min = 0;
repeat_max = -1;
goto REPEAT;
case CHAR_PLUS:
repeat_min = 1;
repeat_max = -1;
goto REPEAT;
case CHAR_QUESTION_MARK:
repeat_min = 0;
repeat_max = 1;
REPEAT:
if (previous == NULL)
{
*errorcodeptr = ERR9;
goto FAILED;
}
if (repeat_min == 0)
{
firstchar = zerofirstchar; /* Adjust for zero repeat */
firstcharflags = zerofirstcharflags;
reqchar = zeroreqchar; /* Ditto */
reqcharflags = zeroreqcharflags;
}
/* Remember whether this is a variable length repeat */
reqvary = (repeat_min == repeat_max)? 0 : REQ_VARY;
op_type = 0; /* Default single-char op codes */
possessive_quantifier = FALSE; /* Default not possessive quantifier */
/* Save start of previous item, in case we have to move it up in order to
insert something before it. */
tempcode = previous;
/* Before checking for a possessive quantifier, we must skip over
whitespace and comments in extended mode because Perl allows white space at
this point. */
if ((options & PCRE_EXTENDED) != 0)
{
const pcre_uchar *p = ptr + 1;
for (;;)
{
while (MAX_255(*p) && (cd->ctypes[*p] & ctype_space) != 0) p++;
if (*p != CHAR_NUMBER_SIGN) break;
p++;
while (*p != CHAR_NULL)
{
if (IS_NEWLINE(p)) /* For non-fixed-length newline cases, */
{ /* IS_NEWLINE sets cd->nllen. */
p += cd->nllen;
break;
}
p++;
#ifdef SUPPORT_UTF
if (utf) FORWARDCHAR(p);
#endif
} /* Loop for comment characters */
} /* Loop for multiple comments */
ptr = p - 1; /* Character before the next significant one. */
}
/* We also need to skip over (?# comments, which are not dependent on
extended mode. */
if (ptr[1] == CHAR_LEFT_PARENTHESIS && ptr[2] == CHAR_QUESTION_MARK &&
ptr[3] == CHAR_NUMBER_SIGN)
{
ptr += 4;
while (*ptr != CHAR_NULL && *ptr != CHAR_RIGHT_PARENTHESIS) ptr++;
if (*ptr == CHAR_NULL)
{
*errorcodeptr = ERR18;
goto FAILED;
}
}
/* If the next character is '+', we have a possessive quantifier. This
implies greediness, whatever the setting of the PCRE_UNGREEDY option.
If the next character is '?' this is a minimizing repeat, by default,
but if PCRE_UNGREEDY is set, it works the other way round. We change the
repeat type to the non-default. */
if (ptr[1] == CHAR_PLUS)
{
repeat_type = 0; /* Force greedy */
possessive_quantifier = TRUE;
ptr++;
}
else if (ptr[1] == CHAR_QUESTION_MARK)
{
repeat_type = greedy_non_default;
ptr++;
}
else repeat_type = greedy_default;
/* If previous was a recursion call, wrap it in atomic brackets so that
previous becomes the atomic group. All recursions were so wrapped in the
past, but it no longer happens for non-repeated recursions. In fact, the
repeated ones could be re-implemented independently so as not to need this,
but for the moment we rely on the code for repeating groups. */
if (*previous == OP_RECURSE)
{
memmove(previous + 1 + LINK_SIZE, previous, IN_UCHARS(1 + LINK_SIZE));
*previous = OP_ONCE;
PUT(previous, 1, 2 + 2*LINK_SIZE);
previous[2 + 2*LINK_SIZE] = OP_KET;
PUT(previous, 3 + 2*LINK_SIZE, 2 + 2*LINK_SIZE);
code += 2 + 2 * LINK_SIZE;
length_prevgroup = 3 + 3*LINK_SIZE;
/* When actually compiling, we need to check whether this was a forward
reference, and if so, adjust the offset. */
if (lengthptr == NULL && cd->hwm >= cd->start_workspace + LINK_SIZE)
{
int offset = GET(cd->hwm, -LINK_SIZE);
if (offset == previous + 1 - cd->start_code)
PUT(cd->hwm, -LINK_SIZE, offset + 1 + LINK_SIZE);
}
}
/* Now handle repetition for the different types of item. */
/* If previous was a character or negated character match, abolish the item
and generate a repeat item instead. If a char item has a minimum of more
than one, ensure that it is set in reqchar - it might not be if a sequence
such as x{3} is the first thing in a branch because the x will have gone
into firstchar instead. */
if (*previous == OP_CHAR || *previous == OP_CHARI
|| *previous == OP_NOT || *previous == OP_NOTI)
{
switch (*previous)
{
default: /* Make compiler happy. */
case OP_CHAR: op_type = OP_STAR - OP_STAR; break;
case OP_CHARI: op_type = OP_STARI - OP_STAR; break;
case OP_NOT: op_type = OP_NOTSTAR - OP_STAR; break;
case OP_NOTI: op_type = OP_NOTSTARI - OP_STAR; break;
}
/* Deal with UTF characters that take up more than one character. It's
easier to write this out separately than try to macrify it. Use c to
hold the length of the character in bytes, plus UTF_LENGTH to flag that
it's a length rather than a small character. */
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf && NOT_FIRSTCHAR(code[-1]))
{
pcre_uchar *lastchar = code - 1;
BACKCHAR(lastchar);
c = (int)(code - lastchar); /* Length of UTF-8 character */
memcpy(utf_chars, lastchar, IN_UCHARS(c)); /* Save the char */
c |= UTF_LENGTH; /* Flag c as a length */
}
else
#endif /* SUPPORT_UTF */
/* Handle the case of a single charater - either with no UTF support, or
with UTF disabled, or for a single character UTF character. */
{
c = code[-1];
if (*previous <= OP_CHARI && repeat_min > 1)
{
reqchar = c;
reqcharflags = req_caseopt | cd->req_varyopt;
}
}
goto OUTPUT_SINGLE_REPEAT; /* Code shared with single character types */
}
/* If previous was a character type match (\d or similar), abolish it and
create a suitable repeat item. The code is shared with single-character
repeats by setting op_type to add a suitable offset into repeat_type. Note
the the Unicode property types will be present only when SUPPORT_UCP is
defined, but we don't wrap the little bits of code here because it just
makes it horribly messy. */
else if (*previous < OP_EODN)
{
pcre_uchar *oldcode;
int prop_type, prop_value;
op_type = OP_TYPESTAR - OP_STAR; /* Use type opcodes */
c = *previous;
OUTPUT_SINGLE_REPEAT:
if (*previous == OP_PROP || *previous == OP_NOTPROP)
{
prop_type = previous[1];
prop_value = previous[2];
}
else prop_type = prop_value = -1;
oldcode = code;
code = previous; /* Usually overwrite previous item */
/* If the maximum is zero then the minimum must also be zero; Perl allows
this case, so we do too - by simply omitting the item altogether. */
if (repeat_max == 0) goto END_REPEAT;
/* Combine the op_type with the repeat_type */
repeat_type += op_type;
/* A minimum of zero is handled either as the special case * or ?, or as
an UPTO, with the maximum given. */
if (repeat_min == 0)
{
if (repeat_max == -1) *code++ = OP_STAR + repeat_type;
else if (repeat_max == 1) *code++ = OP_QUERY + repeat_type;
else
{
*code++ = OP_UPTO + repeat_type;
PUT2INC(code, 0, repeat_max);
}
}
/* A repeat minimum of 1 is optimized into some special cases. If the
maximum is unlimited, we use OP_PLUS. Otherwise, the original item is
left in place and, if the maximum is greater than 1, we use OP_UPTO with
one less than the maximum. */
else if (repeat_min == 1)
{
if (repeat_max == -1)
*code++ = OP_PLUS + repeat_type;
else
{
code = oldcode; /* leave previous item in place */
if (repeat_max == 1) goto END_REPEAT;
*code++ = OP_UPTO + repeat_type;
PUT2INC(code, 0, repeat_max - 1);
}
}
/* The case {n,n} is just an EXACT, while the general case {n,m} is
handled as an EXACT followed by an UPTO. */
else
{
*code++ = OP_EXACT + op_type; /* NB EXACT doesn't have repeat_type */
PUT2INC(code, 0, repeat_min);
/* If the maximum is unlimited, insert an OP_STAR. Before doing so,
we have to insert the character for the previous code. For a repeated
Unicode property match, there are two extra bytes that define the
required property. In UTF-8 mode, long characters have their length in
c, with the UTF_LENGTH bit as a flag. */
if (repeat_max < 0)
{
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf && (c & UTF_LENGTH) != 0)
{
memcpy(code, utf_chars, IN_UCHARS(c & 7));
code += c & 7;
}
else
#endif
{
*code++ = c;
if (prop_type >= 0)
{
*code++ = prop_type;
*code++ = prop_value;
}
}
*code++ = OP_STAR + repeat_type;
}
/* Else insert an UPTO if the max is greater than the min, again
preceded by the character, for the previously inserted code. If the
UPTO is just for 1 instance, we can use QUERY instead. */
else if (repeat_max != repeat_min)
{
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf && (c & UTF_LENGTH) != 0)
{
memcpy(code, utf_chars, IN_UCHARS(c & 7));
code += c & 7;
}
else
#endif
*code++ = c;
if (prop_type >= 0)
{
*code++ = prop_type;
*code++ = prop_value;
}
repeat_max -= repeat_min;
if (repeat_max == 1)
{
*code++ = OP_QUERY + repeat_type;
}
else
{
*code++ = OP_UPTO + repeat_type;
PUT2INC(code, 0, repeat_max);
}
}
}
/* The character or character type itself comes last in all cases. */
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf && (c & UTF_LENGTH) != 0)
{
memcpy(code, utf_chars, IN_UCHARS(c & 7));
code += c & 7;
}
else
#endif
*code++ = c;
/* For a repeated Unicode property match, there are two extra bytes that
define the required property. */
#ifdef SUPPORT_UCP
if (prop_type >= 0)
{
*code++ = prop_type;
*code++ = prop_value;
}
#endif
}
/* If previous was a character class or a back reference, we put the repeat
stuff after it, but just skip the item if the repeat was {0,0}. */
else if (*previous == OP_CLASS || *previous == OP_NCLASS ||
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
*previous == OP_XCLASS ||
#endif
*previous == OP_REF || *previous == OP_REFI ||
*previous == OP_DNREF || *previous == OP_DNREFI)
{
if (repeat_max == 0)
{
code = previous;
goto END_REPEAT;
}
if (repeat_min == 0 && repeat_max == -1)
*code++ = OP_CRSTAR + repeat_type;
else if (repeat_min == 1 && repeat_max == -1)
*code++ = OP_CRPLUS + repeat_type;
else if (repeat_min == 0 && repeat_max == 1)
*code++ = OP_CRQUERY + repeat_type;
else
{
*code++ = OP_CRRANGE + repeat_type;
PUT2INC(code, 0, repeat_min);
if (repeat_max == -1) repeat_max = 0; /* 2-byte encoding for max */
PUT2INC(code, 0, repeat_max);
}
}
/* If previous was a bracket group, we may have to replicate it in certain
cases. Note that at this point we can encounter only the "basic" bracket
opcodes such as BRA and CBRA, as this is the place where they get converted
into the more special varieties such as BRAPOS and SBRA. A test for >=
OP_ASSERT and <= OP_COND includes ASSERT, ASSERT_NOT, ASSERTBACK,
ASSERTBACK_NOT, ONCE, ONCE_NC, BRA, BRAPOS, CBRA, CBRAPOS, and COND.
Originally, PCRE did not allow repetition of assertions, but now it does,
for Perl compatibility. */
else if (*previous >= OP_ASSERT && *previous <= OP_COND)
{
register int i;
int len = (int)(code - previous);
size_t base_hwm_offset = item_hwm_offset;
pcre_uchar *bralink = NULL;
pcre_uchar *brazeroptr = NULL;
/* Repeating a DEFINE group is pointless, but Perl allows the syntax, so
we just ignore the repeat. */
if (*previous == OP_COND && previous[LINK_SIZE+1] == OP_DEF)
goto END_REPEAT;
/* There is no sense in actually repeating assertions. The only potential
use of repetition is in cases when the assertion is optional. Therefore,
if the minimum is greater than zero, just ignore the repeat. If the
maximum is not zero or one, set it to 1. */
if (*previous < OP_ONCE) /* Assertion */
{
if (repeat_min > 0) goto END_REPEAT;
if (repeat_max < 0 || repeat_max > 1) repeat_max = 1;
}
/* The case of a zero minimum is special because of the need to stick
OP_BRAZERO in front of it, and because the group appears once in the
data, whereas in other cases it appears the minimum number of times. For
this reason, it is simplest to treat this case separately, as otherwise
the code gets far too messy. There are several special subcases when the
minimum is zero. */
if (repeat_min == 0)
{
/* If the maximum is also zero, we used to just omit the group from the
output altogether, like this:
** if (repeat_max == 0)
** {
** code = previous;
** goto END_REPEAT;
** }
However, that fails when a group or a subgroup within it is referenced
as a subroutine from elsewhere in the pattern, so now we stick in
OP_SKIPZERO in front of it so that it is skipped on execution. As we
don't have a list of which groups are referenced, we cannot do this
selectively.
If the maximum is 1 or unlimited, we just have to stick in the BRAZERO
and do no more at this point. However, we do need to adjust any
OP_RECURSE calls inside the group that refer to the group itself or any
internal or forward referenced group, because the offset is from the
start of the whole regex. Temporarily terminate the pattern while doing
this. */
if (repeat_max <= 1) /* Covers 0, 1, and unlimited */
{
*code = OP_END;
adjust_recurse(previous, 1, utf, cd, item_hwm_offset);
memmove(previous + 1, previous, IN_UCHARS(len));
code++;
if (repeat_max == 0)
{
*previous++ = OP_SKIPZERO;
goto END_REPEAT;
}
brazeroptr = previous; /* Save for possessive optimizing */
*previous++ = OP_BRAZERO + repeat_type;
}
/* If the maximum is greater than 1 and limited, we have to replicate
in a nested fashion, sticking OP_BRAZERO before each set of brackets.
The first one has to be handled carefully because it's the original
copy, which has to be moved up. The remainder can be handled by code
that is common with the non-zero minimum case below. We have to
adjust the value or repeat_max, since one less copy is required. Once
again, we may have to adjust any OP_RECURSE calls inside the group. */
else
{
int offset;
*code = OP_END;
adjust_recurse(previous, 2 + LINK_SIZE, utf, cd, item_hwm_offset);
memmove(previous + 2 + LINK_SIZE, previous, IN_UCHARS(len));
code += 2 + LINK_SIZE;
*previous++ = OP_BRAZERO + repeat_type;
*previous++ = OP_BRA;
/* We chain together the bracket offset fields that have to be
filled in later when the ends of the brackets are reached. */
offset = (bralink == NULL)? 0 : (int)(previous - bralink);
bralink = previous;
PUTINC(previous, 0, offset);
}
repeat_max--;
}
/* If the minimum is greater than zero, replicate the group as many
times as necessary, and adjust the maximum to the number of subsequent
copies that we need. If we set a first char from the group, and didn't
set a required char, copy the latter from the former. If there are any
forward reference subroutine calls in the group, there will be entries on
the workspace list; replicate these with an appropriate increment. */
else
{
if (repeat_min > 1)
{
/* In the pre-compile phase, we don't actually do the replication. We
just adjust the length as if we had. Do some paranoid checks for
potential integer overflow. The INT64_OR_DOUBLE type is a 64-bit
integer type when available, otherwise double. */
if (lengthptr != NULL)
{
int delta = (repeat_min - 1)*length_prevgroup;
if ((INT64_OR_DOUBLE)(repeat_min - 1)*
(INT64_OR_DOUBLE)length_prevgroup >
(INT64_OR_DOUBLE)INT_MAX ||
OFLOW_MAX - *lengthptr < delta)
{
*errorcodeptr = ERR20;
goto FAILED;
}
*lengthptr += delta;
}
/* This is compiling for real. If there is a set first byte for
the group, and we have not yet set a "required byte", set it. Make
sure there is enough workspace for copying forward references before
doing the copy. */
else
{
if (groupsetfirstchar && reqcharflags < 0)
{
reqchar = firstchar;
reqcharflags = firstcharflags;
}
for (i = 1; i < repeat_min; i++)
{
pcre_uchar *hc;
size_t this_hwm_offset = cd->hwm - cd->start_workspace;
memcpy(code, previous, IN_UCHARS(len));
while (cd->hwm > cd->start_workspace + cd->workspace_size -
WORK_SIZE_SAFETY_MARGIN -
(this_hwm_offset - base_hwm_offset))
{
*errorcodeptr = expand_workspace(cd);
if (*errorcodeptr != 0) goto FAILED;
}
for (hc = (pcre_uchar *)cd->start_workspace + base_hwm_offset;
hc < (pcre_uchar *)cd->start_workspace + this_hwm_offset;
hc += LINK_SIZE)
{
PUT(cd->hwm, 0, GET(hc, 0) + len);
cd->hwm += LINK_SIZE;
}
base_hwm_offset = this_hwm_offset;
code += len;
}
}
}
if (repeat_max > 0) repeat_max -= repeat_min;
}
/* This code is common to both the zero and non-zero minimum cases. If
the maximum is limited, it replicates the group in a nested fashion,
remembering the bracket starts on a stack. In the case of a zero minimum,
the first one was set up above. In all cases the repeat_max now specifies
the number of additional copies needed. Again, we must remember to
replicate entries on the forward reference list. */
if (repeat_max >= 0)
{
/* In the pre-compile phase, we don't actually do the replication. We
just adjust the length as if we had. For each repetition we must add 1
to the length for BRAZERO and for all but the last repetition we must
add 2 + 2*LINKSIZE to allow for the nesting that occurs. Do some
paranoid checks to avoid integer overflow. The INT64_OR_DOUBLE type is
a 64-bit integer type when available, otherwise double. */
if (lengthptr != NULL && repeat_max > 0)
{
int delta = repeat_max * (length_prevgroup + 1 + 2 + 2*LINK_SIZE) -
2 - 2*LINK_SIZE; /* Last one doesn't nest */
if ((INT64_OR_DOUBLE)repeat_max *
(INT64_OR_DOUBLE)(length_prevgroup + 1 + 2 + 2*LINK_SIZE)
> (INT64_OR_DOUBLE)INT_MAX ||
OFLOW_MAX - *lengthptr < delta)
{
*errorcodeptr = ERR20;
goto FAILED;
}
*lengthptr += delta;
}
/* This is compiling for real */
else for (i = repeat_max - 1; i >= 0; i--)
{
pcre_uchar *hc;
size_t this_hwm_offset = cd->hwm - cd->start_workspace;
*code++ = OP_BRAZERO + repeat_type;
/* All but the final copy start a new nesting, maintaining the
chain of brackets outstanding. */
if (i != 0)
{
int offset;
*code++ = OP_BRA;
offset = (bralink == NULL)? 0 : (int)(code - bralink);
bralink = code;
PUTINC(code, 0, offset);
}
memcpy(code, previous, IN_UCHARS(len));
/* Ensure there is enough workspace for forward references before
copying them. */
while (cd->hwm > cd->start_workspace + cd->workspace_size -
WORK_SIZE_SAFETY_MARGIN -
(this_hwm_offset - base_hwm_offset))
{
*errorcodeptr = expand_workspace(cd);
if (*errorcodeptr != 0) goto FAILED;
}
for (hc = (pcre_uchar *)cd->start_workspace + base_hwm_offset;
hc < (pcre_uchar *)cd->start_workspace + this_hwm_offset;
hc += LINK_SIZE)
{
PUT(cd->hwm, 0, GET(hc, 0) + len + ((i != 0)? 2+LINK_SIZE : 1));
cd->hwm += LINK_SIZE;
}
base_hwm_offset = this_hwm_offset;
code += len;
}
/* Now chain through the pending brackets, and fill in their length
fields (which are holding the chain links pro tem). */
while (bralink != NULL)
{
int oldlinkoffset;
int offset = (int)(code - bralink + 1);
pcre_uchar *bra = code - offset;
oldlinkoffset = GET(bra, 1);
bralink = (oldlinkoffset == 0)? NULL : bralink - oldlinkoffset;
*code++ = OP_KET;
PUTINC(code, 0, offset);
PUT(bra, 1, offset);
}
}
/* If the maximum is unlimited, set a repeater in the final copy. For
ONCE brackets, that's all we need to do. However, possessively repeated
ONCE brackets can be converted into non-capturing brackets, as the
behaviour of (?:xx)++ is the same as (?>xx)++ and this saves having to
deal with possessive ONCEs specially.
Otherwise, when we are doing the actual compile phase, check to see
whether this group is one that could match an empty string. If so,
convert the initial operator to the S form (e.g. OP_BRA -> OP_SBRA) so
that runtime checking can be done. [This check is also applied to ONCE
groups at runtime, but in a different way.]
Then, if the quantifier was possessive and the bracket is not a
conditional, we convert the BRA code to the POS form, and the KET code to
KETRPOS. (It turns out to be convenient at runtime to detect this kind of
subpattern at both the start and at the end.) The use of special opcodes
makes it possible to reduce greatly the stack usage in pcre_exec(). If
the group is preceded by OP_BRAZERO, convert this to OP_BRAPOSZERO.
Then, if the minimum number of matches is 1 or 0, cancel the possessive
flag so that the default action below, of wrapping everything inside
atomic brackets, does not happen. When the minimum is greater than 1,
there will be earlier copies of the group, and so we still have to wrap
the whole thing. */
else
{
pcre_uchar *ketcode = code - 1 - LINK_SIZE;
pcre_uchar *bracode = ketcode - GET(ketcode, 1);
/* Convert possessive ONCE brackets to non-capturing */
if ((*bracode == OP_ONCE || *bracode == OP_ONCE_NC) &&
possessive_quantifier) *bracode = OP_BRA;
/* For non-possessive ONCE brackets, all we need to do is to
set the KET. */
if (*bracode == OP_ONCE || *bracode == OP_ONCE_NC)
*ketcode = OP_KETRMAX + repeat_type;
/* Handle non-ONCE brackets and possessive ONCEs (which have been
converted to non-capturing above). */
else
{
/* In the compile phase, check for empty string matching. */
if (lengthptr == NULL)
{
pcre_uchar *scode = bracode;
do
{
if (could_be_empty_branch(scode, ketcode, utf, cd, NULL))
{
*bracode += OP_SBRA - OP_BRA;
break;
}
scode += GET(scode, 1);
}
while (*scode == OP_ALT);
}
/* A conditional group with only one branch has an implicit empty
alternative branch. */
if (*bracode == OP_COND && bracode[GET(bracode,1)] != OP_ALT)
*bracode = OP_SCOND;
/* Handle possessive quantifiers. */
if (possessive_quantifier)
{
/* For COND brackets, we wrap the whole thing in a possessively
repeated non-capturing bracket, because we have not invented POS
versions of the COND opcodes. Because we are moving code along, we
must ensure that any pending recursive references are updated. */
if (*bracode == OP_COND || *bracode == OP_SCOND)
{
int nlen = (int)(code - bracode);
*code = OP_END;
adjust_recurse(bracode, 1 + LINK_SIZE, utf, cd, item_hwm_offset);
memmove(bracode + 1 + LINK_SIZE, bracode, IN_UCHARS(nlen));
code += 1 + LINK_SIZE;
nlen += 1 + LINK_SIZE;
*bracode = (*bracode == OP_COND)? OP_BRAPOS : OP_SBRAPOS;
*code++ = OP_KETRPOS;
PUTINC(code, 0, nlen);
PUT(bracode, 1, nlen);
}
/* For non-COND brackets, we modify the BRA code and use KETRPOS. */
else
{
*bracode += 1; /* Switch to xxxPOS opcodes */
*ketcode = OP_KETRPOS;
}
/* If the minimum is zero, mark it as possessive, then unset the
possessive flag when the minimum is 0 or 1. */
if (brazeroptr != NULL) *brazeroptr = OP_BRAPOSZERO;
if (repeat_min < 2) possessive_quantifier = FALSE;
}
/* Non-possessive quantifier */
else *ketcode = OP_KETRMAX + repeat_type;
}
}
}
/* If previous is OP_FAIL, it was generated by an empty class [] in
JavaScript mode. The other ways in which OP_FAIL can be generated, that is
by (*FAIL) or (?!) set previous to NULL, which gives a "nothing to repeat"
error above. We can just ignore the repeat in JS case. */
else if (*previous == OP_FAIL) goto END_REPEAT;
/* Else there's some kind of shambles */
else
{
*errorcodeptr = ERR11;
goto FAILED;
}
/* If the character following a repeat is '+', possessive_quantifier is
TRUE. For some opcodes, there are special alternative opcodes for this
case. For anything else, we wrap the entire repeated item inside OP_ONCE
brackets. Logically, the '+' notation is just syntactic sugar, taken from
Sun's Java package, but the special opcodes can optimize it.
Some (but not all) possessively repeated subpatterns have already been
completely handled in the code just above. For them, possessive_quantifier
is always FALSE at this stage. Note that the repeated item starts at
tempcode, not at previous, which might be the first part of a string whose
(former) last char we repeated. */
if (possessive_quantifier)
{
int len;
/* Possessifying an EXACT quantifier has no effect, so we can ignore it.
However, QUERY, STAR, or UPTO may follow (for quantifiers such as {5,6},
{5,}, or {5,10}). We skip over an EXACT item; if the length of what
remains is greater than zero, there's a further opcode that can be
handled. If not, do nothing, leaving the EXACT alone. */
switch(*tempcode)
{
case OP_TYPEEXACT:
tempcode += PRIV(OP_lengths)[*tempcode] +
((tempcode[1 + IMM2_SIZE] == OP_PROP
|| tempcode[1 + IMM2_SIZE] == OP_NOTPROP)? 2 : 0);
break;
/* CHAR opcodes are used for exacts whose count is 1. */
case OP_CHAR:
case OP_CHARI:
case OP_NOT:
case OP_NOTI:
case OP_EXACT:
case OP_EXACTI:
case OP_NOTEXACT:
case OP_NOTEXACTI:
tempcode += PRIV(OP_lengths)[*tempcode];
#ifdef SUPPORT_UTF
if (utf && HAS_EXTRALEN(tempcode[-1]))
tempcode += GET_EXTRALEN(tempcode[-1]);
#endif
break;
/* For the class opcodes, the repeat operator appears at the end;
adjust tempcode to point to it. */
case OP_CLASS:
case OP_NCLASS:
tempcode += 1 + 32/sizeof(pcre_uchar);
break;
#if defined SUPPORT_UTF || !defined COMPILE_PCRE8
case OP_XCLASS:
tempcode += GET(tempcode, 1);
break;
#endif
}
/* If tempcode is equal to code (which points to the end of the repeated
item), it means we have skipped an EXACT item but there is no following
QUERY, STAR, or UPTO; the value of len will be 0, and we do nothing. In
all other cases, tempcode will be pointing to the repeat opcode, and will
be less than code, so the value of len will be greater than 0. */
len = (int)(code - tempcode);
if (len > 0)
{
unsigned int repcode = *tempcode;
/* There is a table for possessifying opcodes, all of which are less
than OP_CALLOUT. A zero entry means there is no possessified version.
*/
if (repcode < OP_CALLOUT && opcode_possessify[repcode] > 0)
*tempcode = opcode_possessify[repcode];
/* For opcode without a special possessified version, wrap the item in
ONCE brackets. Because we are moving code along, we must ensure that any
pending recursive references are updated. */
else
{
*code = OP_END;
adjust_recurse(tempcode, 1 + LINK_SIZE, utf, cd, item_hwm_offset);
memmove(tempcode + 1 + LINK_SIZE, tempcode, IN_UCHARS(len));
code += 1 + LINK_SIZE;
len += 1 + LINK_SIZE;
tempcode[0] = OP_ONCE;
*code++ = OP_KET;
PUTINC(code, 0, len);
PUT(tempcode, 1, len);
}
}
#ifdef NEVER
if (len > 0) switch (*tempcode)
{
case OP_STAR: *tempcode = OP_POSSTAR; break;
case OP_PLUS: *tempcode = OP_POSPLUS; break;
case OP_QUERY: *tempcode = OP_POSQUERY; break;
case OP_UPTO: *tempcode = OP_POSUPTO; break;
case OP_STARI: *tempcode = OP_POSSTARI; break;
case OP_PLUSI: *tempcode = OP_POSPLUSI; break;
case OP_QUERYI: *tempcode = OP_POSQUERYI; break;
case OP_UPTOI: *tempcode = OP_POSUPTOI; break;
case OP_NOTSTAR: *tempcode = OP_NOTPOSSTAR; break;
case OP_NOTPLUS: *tempcode = OP_NOTPOSPLUS; break;
case OP_NOTQUERY: *tempcode = OP_NOTPOSQUERY; break;
case OP_NOTUPTO: *tempcode = OP_NOTPOSUPTO; break;
case OP_NOTSTARI: *tempcode = OP_NOTPOSSTARI; break;
case OP_NOTPLUSI: *tempcode = OP_NOTPOSPLUSI; break;
case OP_NOTQUERYI: *tempcode = OP_NOTPOSQUERYI; break;
case OP_NOTUPTOI: *tempcode = OP_NOTPOSUPTOI; break;
case OP_TYPESTAR: *tempcode = OP_TYPEPOSSTAR; break;
case OP_TYPEPLUS: *tempcode = OP_TYPEPOSPLUS; break;
case OP_TYPEQUERY: *tempcode = OP_TYPEPOSQUERY; break;
case OP_TYPEUPTO: *tempcode = OP_TYPEPOSUPTO; break;
case OP_CRSTAR: *tempcode = OP_CRPOSSTAR; break;
case OP_CRPLUS: *tempcode = OP_CRPOSPLUS; break;
case OP_CRQUERY: *tempcode = OP_CRPOSQUERY; break;
case OP_CRRANGE: *tempcode = OP_CRPOSRANGE; break;
/* Because we are moving code along, we must ensure that any
pending recursive references are updated. */
default:
*code = OP_END;
adjust_recurse(tempcode, 1 + LINK_SIZE, utf, cd, item_hwm_offset);
memmove(tempcode + 1 + LINK_SIZE, tempcode, IN_UCHARS(len));
code += 1 + LINK_SIZE;
len += 1 + LINK_SIZE;
tempcode[0] = OP_ONCE;
*code++ = OP_KET;
PUTINC(code, 0, len);
PUT(tempcode, 1, len);
break;
}
#endif
}
/* In all case we no longer have a previous item. We also set the
"follows varying string" flag for subsequently encountered reqchars if
it isn't already set and we have just passed a varying length item. */
END_REPEAT:
previous = NULL;
cd->req_varyopt |= reqvary;
break;
/* ===================================================================*/
/* Start of nested parenthesized sub-expression, or comment or lookahead or
lookbehind or option setting or condition or all the other extended
parenthesis forms. */
case CHAR_LEFT_PARENTHESIS:
ptr++;
/* Now deal with various "verbs" that can be introduced by '*'. */
if (ptr[0] == CHAR_ASTERISK && (ptr[1] == ':'
|| (MAX_255(ptr[1]) && ((cd->ctypes[ptr[1]] & ctype_letter) != 0))))
{
int i, namelen;
int arglen = 0;
const char *vn = verbnames;
const pcre_uchar *name = ptr + 1;
const pcre_uchar *arg = NULL;
previous = NULL;
ptr++;
while (MAX_255(*ptr) && (cd->ctypes[*ptr] & ctype_letter) != 0) ptr++;
namelen = (int)(ptr - name);
/* It appears that Perl allows any characters whatsoever, other than
a closing parenthesis, to appear in arguments, so we no longer insist on
letters, digits, and underscores. */
if (*ptr == CHAR_COLON)
{
arg = ++ptr;
while (*ptr != CHAR_NULL && *ptr != CHAR_RIGHT_PARENTHESIS) ptr++;
arglen = (int)(ptr - arg);
if ((unsigned int)arglen > MAX_MARK)
{
*errorcodeptr = ERR75;
goto FAILED;
}
}
if (*ptr != CHAR_RIGHT_PARENTHESIS)
{
*errorcodeptr = ERR60;
goto FAILED;
}
/* Scan the table of verb names */
for (i = 0; i < verbcount; i++)
{
if (namelen == verbs[i].len &&
STRNCMP_UC_C8(name, vn, namelen) == 0)
{
int setverb;
/* Check for open captures before ACCEPT and convert it to
ASSERT_ACCEPT if in an assertion. */
if (verbs[i].op == OP_ACCEPT)
{
open_capitem *oc;
if (arglen != 0)
{
*errorcodeptr = ERR59;
goto FAILED;
}
cd->had_accept = TRUE;
for (oc = cd->open_caps; oc != NULL; oc = oc->next)
{
if (lengthptr != NULL)
{
#ifdef COMPILE_PCRE8
*lengthptr += 1 + IMM2_SIZE;
#elif defined COMPILE_PCRE16
*lengthptr += 2 + IMM2_SIZE;
#elif defined COMPILE_PCRE32
*lengthptr += 4 + IMM2_SIZE;
#endif
}
else
{
*code++ = OP_CLOSE;
PUT2INC(code, 0, oc->number);
}
}
setverb = *code++ =
(cd->assert_depth > 0)? OP_ASSERT_ACCEPT : OP_ACCEPT;
/* Do not set firstchar after *ACCEPT */
if (firstcharflags == REQ_UNSET) firstcharflags = REQ_NONE;
}
/* Handle other cases with/without an argument */
else if (arglen == 0)
{
if (verbs[i].op < 0) /* Argument is mandatory */
{
*errorcodeptr = ERR66;
goto FAILED;
}
setverb = *code++ = verbs[i].op;
}
else
{
if (verbs[i].op_arg < 0) /* Argument is forbidden */
{
*errorcodeptr = ERR59;
goto FAILED;
}
setverb = *code++ = verbs[i].op_arg;
if (lengthptr != NULL) /* In pass 1 just add in the length */
{ /* to avoid potential workspace */
*lengthptr += arglen; /* overflow. */
*code++ = 0;
}
else
{
*code++ = arglen;
memcpy(code, arg, IN_UCHARS(arglen));
code += arglen;
}
*code++ = 0;
}
switch (setverb)
{
case OP_THEN:
case OP_THEN_ARG:
cd->external_flags |= PCRE_HASTHEN;
break;
case OP_PRUNE:
case OP_PRUNE_ARG:
case OP_SKIP:
case OP_SKIP_ARG:
cd->had_pruneorskip = TRUE;
break;
}
break; /* Found verb, exit loop */
}
vn += verbs[i].len + 1;
}
if (i < verbcount) continue; /* Successfully handled a verb */
*errorcodeptr = ERR60; /* Verb not recognized */
goto FAILED;
}
/* Initialize for "real" parentheses */
newoptions = options;
skipbytes = 0;
bravalue = OP_CBRA;
item_hwm_offset = cd->hwm - cd->start_workspace;
reset_bracount = FALSE;
/* Deal with the extended parentheses; all are introduced by '?', and the
appearance of any of them means that this is not a capturing group. */
if (*ptr == CHAR_QUESTION_MARK)
{
int i, set, unset, namelen;
int *optset;
const pcre_uchar *name;
pcre_uchar *slot;
switch (*(++ptr))
{
/* ------------------------------------------------------------ */
case CHAR_VERTICAL_LINE: /* Reset capture count for each branch */
reset_bracount = TRUE;
cd->dupgroups = TRUE; /* Record (?| encountered */
/* Fall through */
/* ------------------------------------------------------------ */
case CHAR_COLON: /* Non-capturing bracket */
bravalue = OP_BRA;
ptr++;
break;
/* ------------------------------------------------------------ */
case CHAR_LEFT_PARENTHESIS:
bravalue = OP_COND; /* Conditional group */
tempptr = ptr;
/* A condition can be an assertion, a number (referring to a numbered
group's having been set), a name (referring to a named group), or 'R',
referring to recursion. R<digits> and R&name are also permitted for
recursion tests.
There are ways of testing a named group: (?(name)) is used by Python;
Perl 5.10 onwards uses (?(<name>) or (?('name')).
There is one unfortunate ambiguity, caused by history. 'R' can be the
recursive thing or the name 'R' (and similarly for 'R' followed by
digits). We look for a name first; if not found, we try the other case.
For compatibility with auto-callouts, we allow a callout to be
specified before a condition that is an assertion. First, check for the
syntax of a callout; if found, adjust the temporary pointer that is
used to check for an assertion condition. That's all that is needed! */
if (ptr[1] == CHAR_QUESTION_MARK && ptr[2] == CHAR_C)
{
for (i = 3;; i++) if (!IS_DIGIT(ptr[i])) break;
if (ptr[i] == CHAR_RIGHT_PARENTHESIS)
tempptr += i + 1;
/* tempptr should now be pointing to the opening parenthesis of the
assertion condition. */
if (*tempptr != CHAR_LEFT_PARENTHESIS)
{
*errorcodeptr = ERR28;
goto FAILED;
}
}
/* For conditions that are assertions, check the syntax, and then exit
the switch. This will take control down to where bracketed groups,
including assertions, are processed. */
if (tempptr[1] == CHAR_QUESTION_MARK &&
(tempptr[2] == CHAR_EQUALS_SIGN ||
tempptr[2] == CHAR_EXCLAMATION_MARK ||
(tempptr[2] == CHAR_LESS_THAN_SIGN &&
(tempptr[3] == CHAR_EQUALS_SIGN ||
tempptr[3] == CHAR_EXCLAMATION_MARK))))
{
cd->iscondassert = TRUE;
break;
}
/* Other conditions use OP_CREF/OP_DNCREF/OP_RREF/OP_DNRREF, and all
need to skip at least 1+IMM2_SIZE bytes at the start of the group. */
code[1+LINK_SIZE] = OP_CREF;
skipbytes = 1+IMM2_SIZE;
refsign = -1; /* => not a number */
namelen = -1; /* => not a name; must set to avoid warning */
name = NULL; /* Always set to avoid warning */
recno = 0; /* Always set to avoid warning */
/* Check for a test for recursion in a named group. */
ptr++;
if (*ptr == CHAR_R && ptr[1] == CHAR_AMPERSAND)
{
terminator = -1;
ptr += 2;
code[1+LINK_SIZE] = OP_RREF; /* Change the type of test */
}
/* Check for a test for a named group's having been set, using the Perl
syntax (?(<name>) or (?('name'), and also allow for the original PCRE
syntax of (?(name) or for (?(+n), (?(-n), and just (?(n). */
else if (*ptr == CHAR_LESS_THAN_SIGN)
{
terminator = CHAR_GREATER_THAN_SIGN;
ptr++;
}
else if (*ptr == CHAR_APOSTROPHE)
{
terminator = CHAR_APOSTROPHE;
ptr++;
}
else
{
terminator = CHAR_NULL;
if (*ptr == CHAR_MINUS || *ptr == CHAR_PLUS) refsign = *ptr++;
else if (IS_DIGIT(*ptr)) refsign = 0;
}
/* Handle a number */
if (refsign >= 0)
{
while (IS_DIGIT(*ptr))
{
if (recno > INT_MAX / 10 - 1) /* Integer overflow */
{
while (IS_DIGIT(*ptr)) ptr++;
*errorcodeptr = ERR61;
goto FAILED;
}
recno = recno * 10 + (int)(*ptr - CHAR_0);
ptr++;
}
}
/* Otherwise we expect to read a name; anything else is an error. When
a name is one of a number of duplicates, a different opcode is used and
it needs more memory. Unfortunately we cannot tell whether a name is a
duplicate in the first pass, so we have to allow for more memory. */
else
{
if (IS_DIGIT(*ptr))
{
*errorcodeptr = ERR84;
goto FAILED;
}
if (!MAX_255(*ptr) || (cd->ctypes[*ptr] & ctype_word) == 0)
{
*errorcodeptr = ERR28; /* Assertion expected */
goto FAILED;
}
name = ptr++;
while (MAX_255(*ptr) && (cd->ctypes[*ptr] & ctype_word) != 0)
{
ptr++;
}
namelen = (int)(ptr - name);
if (lengthptr != NULL) skipbytes += IMM2_SIZE;
}
/* Check the terminator */
if ((terminator > 0 && *ptr++ != (pcre_uchar)terminator) ||
*ptr++ != CHAR_RIGHT_PARENTHESIS)
{
ptr--; /* Error offset */
*errorcodeptr = ERR26; /* Malformed number or name */
goto FAILED;
}
/* Do no further checking in the pre-compile phase. */
if (lengthptr != NULL) break;
/* In the real compile we do the work of looking for the actual
reference. If refsign is not negative, it means we have a number in
recno. */
if (refsign >= 0)
{
if (recno <= 0)
{
*errorcodeptr = ERR35;
goto FAILED;
}
if (refsign != 0) recno = (refsign == CHAR_MINUS)?
cd->bracount - recno + 1 : recno + cd->bracount;
if (recno <= 0 || recno > cd->final_bracount)
{
*errorcodeptr = ERR15;
goto FAILED;
}
PUT2(code, 2+LINK_SIZE, recno);
if (recno > cd->top_backref) cd->top_backref = recno;
break;
}
/* Otherwise look for the name. */
slot = cd->name_table;
for (i = 0; i < cd->names_found; i++)
{
if (STRNCMP_UC_UC(name, slot+IMM2_SIZE, namelen) == 0 &&
slot[IMM2_SIZE+namelen] == 0) break;
slot += cd->name_entry_size;
}
/* Found the named subpattern. If the name is duplicated, add one to
the opcode to change CREF/RREF into DNCREF/DNRREF and insert
appropriate data values. Otherwise, just insert the unique subpattern
number. */
if (i < cd->names_found)
{
int offset = i++;
int count = 1;
recno = GET2(slot, 0); /* Number from first found */
if (recno > cd->top_backref) cd->top_backref = recno;
for (; i < cd->names_found; i++)
{
slot += cd->name_entry_size;
if (STRNCMP_UC_UC(name, slot+IMM2_SIZE, namelen) != 0 ||
(slot+IMM2_SIZE)[namelen] != 0) break;
count++;
}
if (count > 1)
{
PUT2(code, 2+LINK_SIZE, offset);
PUT2(code, 2+LINK_SIZE+IMM2_SIZE, count);
skipbytes += IMM2_SIZE;
code[1+LINK_SIZE]++;
}
else /* Not a duplicated name */
{
PUT2(code, 2+LINK_SIZE, recno);
}
}
/* If terminator == CHAR_NULL it means that the name followed directly
after the opening parenthesis [e.g. (?(abc)...] and in this case there
are some further alternatives to try. For the cases where terminator !=
CHAR_NULL [things like (?(<name>... or (?('name')... or (?(R&name)... ]
we have now checked all the possibilities, so give an error. */
else if (terminator != CHAR_NULL)
{
*errorcodeptr = ERR15;
goto FAILED;
}
/* Check for (?(R) for recursion. Allow digits after R to specify a
specific group number. */
else if (*name == CHAR_R)
{
recno = 0;
for (i = 1; i < namelen; i++)
{
if (!IS_DIGIT(name[i]))
{
*errorcodeptr = ERR15;
goto FAILED;
}
if (recno > INT_MAX / 10 - 1) /* Integer overflow */
{
*errorcodeptr = ERR61;
goto FAILED;
}
recno = recno * 10 + name[i] - CHAR_0;
}
if (recno == 0) recno = RREF_ANY;
code[1+LINK_SIZE] = OP_RREF; /* Change test type */
PUT2(code, 2+LINK_SIZE, recno);
}
/* Similarly, check for the (?(DEFINE) "condition", which is always
false. */
else if (namelen == 6 && STRNCMP_UC_C8(name, STRING_DEFINE, 6) == 0)
{
code[1+LINK_SIZE] = OP_DEF;
skipbytes = 1;
}
/* Reference to an unidentified subpattern. */
else
{
*errorcodeptr = ERR15;
goto FAILED;
}
break;
/* ------------------------------------------------------------ */
case CHAR_EQUALS_SIGN: /* Positive lookahead */
bravalue = OP_ASSERT;
cd->assert_depth += 1;
ptr++;
break;
/* Optimize (?!) to (*FAIL) unless it is quantified - which is a weird
thing to do, but Perl allows all assertions to be quantified, and when
they contain capturing parentheses there may be a potential use for
this feature. Not that that applies to a quantified (?!) but we allow
it for uniformity. */
/* ------------------------------------------------------------ */
case CHAR_EXCLAMATION_MARK: /* Negative lookahead */
ptr++;
if (*ptr == CHAR_RIGHT_PARENTHESIS && ptr[1] != CHAR_ASTERISK &&
ptr[1] != CHAR_PLUS && ptr[1] != CHAR_QUESTION_MARK &&
(ptr[1] != CHAR_LEFT_CURLY_BRACKET || !is_counted_repeat(ptr+2)))
{
*code++ = OP_FAIL;
previous = NULL;
continue;
}
bravalue = OP_ASSERT_NOT;
cd->assert_depth += 1;
break;
/* ------------------------------------------------------------ */
case CHAR_LESS_THAN_SIGN: /* Lookbehind or named define */
switch (ptr[1])
{
case CHAR_EQUALS_SIGN: /* Positive lookbehind */
bravalue = OP_ASSERTBACK;
cd->assert_depth += 1;
ptr += 2;
break;
case CHAR_EXCLAMATION_MARK: /* Negative lookbehind */
bravalue = OP_ASSERTBACK_NOT;
cd->assert_depth += 1;
ptr += 2;
break;
default: /* Could be name define, else bad */
if (MAX_255(ptr[1]) && (cd->ctypes[ptr[1]] & ctype_word) != 0)
goto DEFINE_NAME;
ptr++; /* Correct offset for error */
*errorcodeptr = ERR24;
goto FAILED;
}
break;
/* ------------------------------------------------------------ */
case CHAR_GREATER_THAN_SIGN: /* One-time brackets */
bravalue = OP_ONCE;
ptr++;
break;
/* ------------------------------------------------------------ */
case CHAR_C: /* Callout - may be followed by digits; */
previous_callout = code; /* Save for later completion */
after_manual_callout = 1; /* Skip one item before completing */
*code++ = OP_CALLOUT;
{
int n = 0;
ptr++;
while(IS_DIGIT(*ptr))
{
n = n * 10 + *ptr++ - CHAR_0;
if (n > 255)
{
*errorcodeptr = ERR38;
goto FAILED;
}
}
if (*ptr != CHAR_RIGHT_PARENTHESIS)
{
*errorcodeptr = ERR39;
goto FAILED;
}
*code++ = n;
PUT(code, 0, (int)(ptr - cd->start_pattern + 1)); /* Pattern offset */
PUT(code, LINK_SIZE, 0); /* Default length */
code += 2 * LINK_SIZE;
}
previous = NULL;
continue;
/* ------------------------------------------------------------ */
case CHAR_P: /* Python-style named subpattern handling */
if (*(++ptr) == CHAR_EQUALS_SIGN ||
*ptr == CHAR_GREATER_THAN_SIGN) /* Reference or recursion */
{
is_recurse = *ptr == CHAR_GREATER_THAN_SIGN;
terminator = CHAR_RIGHT_PARENTHESIS;
goto NAMED_REF_OR_RECURSE;
}
else if (*ptr != CHAR_LESS_THAN_SIGN) /* Test for Python-style defn */
{
*errorcodeptr = ERR41;
goto FAILED;
}
/* Fall through to handle (?P< as (?< is handled */
/* ------------------------------------------------------------ */
DEFINE_NAME: /* Come here from (?< handling */
case CHAR_APOSTROPHE:
terminator = (*ptr == CHAR_LESS_THAN_SIGN)?
CHAR_GREATER_THAN_SIGN : CHAR_APOSTROPHE;
name = ++ptr;
if (IS_DIGIT(*ptr))
{
*errorcodeptr = ERR84; /* Group name must start with non-digit */
goto FAILED;
}
while (MAX_255(*ptr) && (cd->ctypes[*ptr] & ctype_word) != 0) ptr++;
namelen = (int)(ptr - name);
/* In the pre-compile phase, do a syntax check, remember the longest
name, and then remember the group in a vector, expanding it if
necessary. Duplicates for the same number are skipped; other duplicates
are checked for validity. In the actual compile, there is nothing to
do. */
if (lengthptr != NULL)
{
named_group *ng;
pcre_uint32 number = cd->bracount + 1;
if (*ptr != (pcre_uchar)terminator)
{
*errorcodeptr = ERR42;
goto FAILED;
}
if (cd->names_found >= MAX_NAME_COUNT)
{
*errorcodeptr = ERR49;
goto FAILED;
}
if (namelen + IMM2_SIZE + 1 > cd->name_entry_size)
{
cd->name_entry_size = namelen + IMM2_SIZE + 1;
if (namelen > MAX_NAME_SIZE)
{
*errorcodeptr = ERR48;
goto FAILED;
}
}
/* Scan the list to check for duplicates. For duplicate names, if the
number is the same, break the loop, which causes the name to be
discarded; otherwise, if DUPNAMES is not set, give an error.
If it is set, allow the name with a different number, but continue
scanning in case this is a duplicate with the same number. For
non-duplicate names, give an error if the number is duplicated. */
ng = cd->named_groups;
for (i = 0; i < cd->names_found; i++, ng++)
{
if (namelen == ng->length &&
STRNCMP_UC_UC(name, ng->name, namelen) == 0)
{
if (ng->number == number) break;
if ((options & PCRE_DUPNAMES) == 0)
{
*errorcodeptr = ERR43;
goto FAILED;
}
cd->dupnames = TRUE; /* Duplicate names exist */
}
else if (ng->number == number)
{
*errorcodeptr = ERR65;
goto FAILED;
}
}
if (i >= cd->names_found) /* Not a duplicate with same number */
{
/* Increase the list size if necessary */
if (cd->names_found >= cd->named_group_list_size)
{
int newsize = cd->named_group_list_size * 2;
named_group *newspace = (PUBL(malloc))
(newsize * sizeof(named_group));
if (newspace == NULL)
{
*errorcodeptr = ERR21;
goto FAILED;
}
memcpy(newspace, cd->named_groups,
cd->named_group_list_size * sizeof(named_group));
if (cd->named_group_list_size > NAMED_GROUP_LIST_SIZE)
(PUBL(free))((void *)cd->named_groups);
cd->named_groups = newspace;
cd->named_group_list_size = newsize;
}
cd->named_groups[cd->names_found].name = name;
cd->named_groups[cd->names_found].length = namelen;
cd->named_groups[cd->names_found].number = number;
cd->names_found++;
}
}
ptr++; /* Move past > or ' in both passes. */
goto NUMBERED_GROUP;
/* ------------------------------------------------------------ */
case CHAR_AMPERSAND: /* Perl recursion/subroutine syntax */
terminator = CHAR_RIGHT_PARENTHESIS;
is_recurse = TRUE;
/* Fall through */
/* We come here from the Python syntax above that handles both
references (?P=name) and recursion (?P>name), as well as falling
through from the Perl recursion syntax (?&name). We also come here from
the Perl \k<name> or \k'name' back reference syntax and the \k{name}
.NET syntax, and the Oniguruma \g<...> and \g'...' subroutine syntax. */
NAMED_REF_OR_RECURSE:
name = ++ptr;
if (IS_DIGIT(*ptr))
{
*errorcodeptr = ERR84; /* Group name must start with non-digit */
goto FAILED;
}
while (MAX_255(*ptr) && (cd->ctypes[*ptr] & ctype_word) != 0) ptr++;
namelen = (int)(ptr - name);
/* In the pre-compile phase, do a syntax check. We used to just set
a dummy reference number, because it was not used in the first pass.
However, with the change of recursive back references to be atomic,
we have to look for the number so that this state can be identified, as
otherwise the incorrect length is computed. If it's not a backwards
reference, the dummy number will do. */
if (lengthptr != NULL)
{
named_group *ng;
recno = 0;
if (namelen == 0)
{
*errorcodeptr = ERR62;
goto FAILED;
}
if (*ptr != (pcre_uchar)terminator)
{
*errorcodeptr = ERR42;
goto FAILED;
}
if (namelen > MAX_NAME_SIZE)
{
*errorcodeptr = ERR48;
goto FAILED;
}
/* Count named back references. */
if (!is_recurse) cd->namedrefcount++;
/* We have to allow for a named reference to a duplicated name (this
cannot be determined until the second pass). This needs an extra
16-bit data item. */
*lengthptr += IMM2_SIZE;
/* If this is a forward reference and we are within a (?|...) group,
the reference may end up as the number of a group which we are
currently inside, that is, it could be a recursive reference. In the
real compile this will be picked up and the reference wrapped with
OP_ONCE to make it atomic, so we must space in case this occurs. */
/* In fact, this can happen for a non-forward reference because
another group with the same number might be created later. This
issue is fixed "properly" in PCRE2. As PCRE1 is now in maintenance
only mode, we finesse the bug by allowing more memory always. */
*lengthptr += 4 + 4*LINK_SIZE;
/* It is even worse than that. The current reference may be to an
existing named group with a different number (so apparently not
recursive) but which later on is also attached to a group with the
current number. This can only happen if $(| has been previous
encountered. In that case, we allow yet more memory, just in case.
(Again, this is fixed "properly" in PCRE2. */
if (cd->dupgroups) *lengthptr += 4 + 4*LINK_SIZE;
/* Otherwise, check for recursion here. The name table does not exist
in the first pass; instead we must scan the list of names encountered
so far in order to get the number. If the name is not found, leave
the value of recno as 0 for a forward reference. */
/* This patch (removing "else") fixes a problem when a reference is
to multiple identically named nested groups from within the nest.
Once again, it is not the "proper" fix, and it results in an
over-allocation of memory. */
/* else */
{
ng = cd->named_groups;
for (i = 0; i < cd->names_found; i++, ng++)
{
if (namelen == ng->length &&
STRNCMP_UC_UC(name, ng->name, namelen) == 0)
{
open_capitem *oc;
recno = ng->number;
if (is_recurse) break;
for (oc = cd->open_caps; oc != NULL; oc = oc->next)
{
if (oc->number == recno)
{
oc->flag = TRUE;
break;
}
}
}
}
}
}
/* In the real compile, search the name table. We check the name
first, and then check that we have reached the end of the name in the
table. That way, if the name is longer than any in the table, the
comparison will fail without reading beyond the table entry. */
else
{
slot = cd->name_table;
for (i = 0; i < cd->names_found; i++)
{
if (STRNCMP_UC_UC(name, slot+IMM2_SIZE, namelen) == 0 &&
slot[IMM2_SIZE+namelen] == 0)
break;
slot += cd->name_entry_size;
}
if (i < cd->names_found)
{
recno = GET2(slot, 0);
}
else
{
*errorcodeptr = ERR15;
goto FAILED;
}
}
/* In both phases, for recursions, we can now go to the code than
handles numerical recursion. */
if (is_recurse) goto HANDLE_RECURSION;
/* In the second pass we must see if the name is duplicated. If so, we
generate a different opcode. */
if (lengthptr == NULL && cd->dupnames)
{
int count = 1;
unsigned int index = i;
pcre_uchar *cslot = slot + cd->name_entry_size;
for (i++; i < cd->names_found; i++)
{
if (STRCMP_UC_UC(slot + IMM2_SIZE, cslot + IMM2_SIZE) != 0) break;
count++;
cslot += cd->name_entry_size;
}
if (count > 1)
{
if (firstcharflags == REQ_UNSET) firstcharflags = REQ_NONE;
previous = code;
item_hwm_offset = cd->hwm - cd->start_workspace;
*code++ = ((options & PCRE_CASELESS) != 0)? OP_DNREFI : OP_DNREF;
PUT2INC(code, 0, index);
PUT2INC(code, 0, count);
/* Process each potentially referenced group. */
for (; slot < cslot; slot += cd->name_entry_size)
{
open_capitem *oc;
recno = GET2(slot, 0);
cd->backref_map |= (recno < 32)? (1U << recno) : 1;
if (recno > cd->top_backref) cd->top_backref = recno;
/* Check to see if this back reference is recursive, that it, it
is inside the group that it references. A flag is set so that the
group can be made atomic. */
for (oc = cd->open_caps; oc != NULL; oc = oc->next)
{
if (oc->number == recno)
{
oc->flag = TRUE;
break;
}
}
}
continue; /* End of back ref handling */
}
}
/* First pass, or a non-duplicated name. */
goto HANDLE_REFERENCE;
/* ------------------------------------------------------------ */
case CHAR_R: /* Recursion, same as (?0) */
recno = 0;
if (*(++ptr) != CHAR_RIGHT_PARENTHESIS)
{
*errorcodeptr = ERR29;
goto FAILED;
}
goto HANDLE_RECURSION;
/* ------------------------------------------------------------ */
case CHAR_MINUS: case CHAR_PLUS: /* Recursion or subroutine */
case CHAR_0: case CHAR_1: case CHAR_2: case CHAR_3: case CHAR_4:
case CHAR_5: case CHAR_6: case CHAR_7: case CHAR_8: case CHAR_9:
{
const pcre_uchar *called;
terminator = CHAR_RIGHT_PARENTHESIS;
/* Come here from the \g<...> and \g'...' code (Oniguruma
compatibility). However, the syntax has been checked to ensure that
the ... are a (signed) number, so that neither ERR63 nor ERR29 will
be called on this path, nor with the jump to OTHER_CHAR_AFTER_QUERY
ever be taken. */
HANDLE_NUMERICAL_RECURSION:
if ((refsign = *ptr) == CHAR_PLUS)
{
ptr++;
if (!IS_DIGIT(*ptr))
{
*errorcodeptr = ERR63;
goto FAILED;
}
}
else if (refsign == CHAR_MINUS)
{
if (!IS_DIGIT(ptr[1]))
goto OTHER_CHAR_AFTER_QUERY;
ptr++;
}
recno = 0;
while(IS_DIGIT(*ptr))
{
if (recno > INT_MAX / 10 - 1) /* Integer overflow */
{
while (IS_DIGIT(*ptr)) ptr++;
*errorcodeptr = ERR61;
goto FAILED;
}
recno = recno * 10 + *ptr++ - CHAR_0;
}
if (*ptr != (pcre_uchar)terminator)
{
*errorcodeptr = ERR29;
goto FAILED;
}
if (refsign == CHAR_MINUS)
{
if (recno == 0)
{
*errorcodeptr = ERR58;
goto FAILED;
}
recno = cd->bracount - recno + 1;
if (recno <= 0)
{
*errorcodeptr = ERR15;
goto FAILED;
}
}
else if (refsign == CHAR_PLUS)
{
if (recno == 0)
{
*errorcodeptr = ERR58;
goto FAILED;
}
recno += cd->bracount;
}
/* Come here from code above that handles a named recursion */
HANDLE_RECURSION:
previous = code;
item_hwm_offset = cd->hwm - cd->start_workspace;
called = cd->start_code;
/* When we are actually compiling, find the bracket that is being
referenced. Temporarily end the regex in case it doesn't exist before
this point. If we end up with a forward reference, first check that
the bracket does occur later so we can give the error (and position)
now. Then remember this forward reference in the workspace so it can
be filled in at the end. */
if (lengthptr == NULL)
{
*code = OP_END;
if (recno != 0)
called = PRIV(find_bracket)(cd->start_code, utf, recno);
/* Forward reference */
if (called == NULL)
{
if (recno > cd->final_bracount)
{
*errorcodeptr = ERR15;
goto FAILED;
}
/* Fudge the value of "called" so that when it is inserted as an
offset below, what it actually inserted is the reference number
of the group. Then remember the forward reference. */
called = cd->start_code + recno;
if (cd->hwm >= cd->start_workspace + cd->workspace_size -
WORK_SIZE_SAFETY_MARGIN)
{
*errorcodeptr = expand_workspace(cd);
if (*errorcodeptr != 0) goto FAILED;
}
PUTINC(cd->hwm, 0, (int)(code + 1 - cd->start_code));
}
/* If not a forward reference, and the subpattern is still open,
this is a recursive call. We check to see if this is a left
recursion that could loop for ever, and diagnose that case. We
must not, however, do this check if we are in a conditional
subpattern because the condition might be testing for recursion in
a pattern such as /(?(R)a+|(?R)b)/, which is perfectly valid.
Forever loops are also detected at runtime, so those that occur in
conditional subpatterns will be picked up then. */
else if (GET(called, 1) == 0 && cond_depth <= 0 &&
could_be_empty(called, code, bcptr, utf, cd))
{
*errorcodeptr = ERR40;
goto FAILED;
}
}
/* Insert the recursion/subroutine item. It does not have a set first
character (relevant if it is repeated, because it will then be
wrapped with ONCE brackets). */
*code = OP_RECURSE;
PUT(code, 1, (int)(called - cd->start_code));
code += 1 + LINK_SIZE;
groupsetfirstchar = FALSE;
}
/* Can't determine a first byte now */
if (firstcharflags == REQ_UNSET) firstcharflags = REQ_NONE;
zerofirstchar = firstchar;
zerofirstcharflags = firstcharflags;
continue;
/* ------------------------------------------------------------ */
default: /* Other characters: check option setting */
OTHER_CHAR_AFTER_QUERY:
set = unset = 0;
optset = &set;
while (*ptr != CHAR_RIGHT_PARENTHESIS && *ptr != CHAR_COLON)
{
switch (*ptr++)
{
case CHAR_MINUS: optset = &unset; break;
case CHAR_J: /* Record that it changed in the external options */
*optset |= PCRE_DUPNAMES;
cd->external_flags |= PCRE_JCHANGED;
break;
case CHAR_i: *optset |= PCRE_CASELESS; break;
case CHAR_m: *optset |= PCRE_MULTILINE; break;
case CHAR_s: *optset |= PCRE_DOTALL; break;
case CHAR_x: *optset |= PCRE_EXTENDED; break;
case CHAR_U: *optset |= PCRE_UNGREEDY; break;
case CHAR_X: *optset |= PCRE_EXTRA; break;
default: *errorcodeptr = ERR12;
ptr--; /* Correct the offset */
goto FAILED;
}
}
/* Set up the changed option bits, but don't change anything yet. */
newoptions = (options | set) & (~unset);
/* If the options ended with ')' this is not the start of a nested
group with option changes, so the options change at this level.
If we are not at the pattern start, reset the greedy defaults and the
case value for firstchar and reqchar. */
if (*ptr == CHAR_RIGHT_PARENTHESIS)
{
greedy_default = ((newoptions & PCRE_UNGREEDY) != 0);
greedy_non_default = greedy_default ^ 1;
req_caseopt = ((newoptions & PCRE_CASELESS) != 0)? REQ_CASELESS:0;
/* Change options at this level, and pass them back for use
in subsequent branches. */
*optionsptr = options = newoptions;
previous = NULL; /* This item can't be repeated */
continue; /* It is complete */
}
/* If the options ended with ':' we are heading into a nested group
with possible change of options. Such groups are non-capturing and are
not assertions of any kind. All we need to do is skip over the ':';
the newoptions value is handled below. */
bravalue = OP_BRA;
ptr++;
} /* End of switch for character following (? */
} /* End of (? handling */
/* Opening parenthesis not followed by '*' or '?'. If PCRE_NO_AUTO_CAPTURE
is set, all unadorned brackets become non-capturing and behave like (?:...)
brackets. */
else if ((options & PCRE_NO_AUTO_CAPTURE) != 0)
{
bravalue = OP_BRA;
}
/* Else we have a capturing group. */
else
{
NUMBERED_GROUP:
cd->bracount += 1;
PUT2(code, 1+LINK_SIZE, cd->bracount);
skipbytes = IMM2_SIZE;
}
/* Process nested bracketed regex. First check for parentheses nested too
deeply. */
if ((cd->parens_depth += 1) > PARENS_NEST_LIMIT)
{
*errorcodeptr = ERR82;
goto FAILED;
}
/* All assertions used not to be repeatable, but this was changed for Perl
compatibility. All kinds can now be repeated except for assertions that are
conditions (Perl also forbids these to be repeated). We copy code into a
non-register variable (tempcode) in order to be able to pass its address
because some compilers complain otherwise. At the start of a conditional
group whose condition is an assertion, cd->iscondassert is set. We unset it
here so as to allow assertions later in the group to be quantified. */
if (bravalue >= OP_ASSERT && bravalue <= OP_ASSERTBACK_NOT &&
cd->iscondassert)
{
previous = NULL;
cd->iscondassert = FALSE;
}
else
{
previous = code;
item_hwm_offset = cd->hwm - cd->start_workspace;
}
*code = bravalue;
tempcode = code;
tempreqvary = cd->req_varyopt; /* Save value before bracket */
tempbracount = cd->bracount; /* Save value before bracket */
length_prevgroup = 0; /* Initialize for pre-compile phase */
if (!compile_regex(
newoptions, /* The complete new option state */
&tempcode, /* Where to put code (updated) */
&ptr, /* Input pointer (updated) */
errorcodeptr, /* Where to put an error message */
(bravalue == OP_ASSERTBACK ||
bravalue == OP_ASSERTBACK_NOT), /* TRUE if back assert */
reset_bracount, /* True if (?| group */
skipbytes, /* Skip over bracket number */
cond_depth +
((bravalue == OP_COND)?1:0), /* Depth of condition subpatterns */
&subfirstchar, /* For possible first char */
&subfirstcharflags,
&subreqchar, /* For possible last char */
&subreqcharflags,
bcptr, /* Current branch chain */
cd, /* Tables block */
(lengthptr == NULL)? NULL : /* Actual compile phase */
&length_prevgroup /* Pre-compile phase */
))
goto FAILED;
cd->parens_depth -= 1;
/* If this was an atomic group and there are no capturing groups within it,
generate OP_ONCE_NC instead of OP_ONCE. */
if (bravalue == OP_ONCE && cd->bracount <= tempbracount)
*code = OP_ONCE_NC;
if (bravalue >= OP_ASSERT && bravalue <= OP_ASSERTBACK_NOT)
cd->assert_depth -= 1;
/* At the end of compiling, code is still pointing to the start of the
group, while tempcode has been updated to point past the end of the group.
The pattern pointer (ptr) is on the bracket.
If this is a conditional bracket, check that there are no more than
two branches in the group, or just one if it's a DEFINE group. We do this
in the real compile phase, not in the pre-pass, where the whole group may
not be available. */
if (bravalue == OP_COND && lengthptr == NULL)
{
pcre_uchar *tc = code;
int condcount = 0;
do {
condcount++;
tc += GET(tc,1);
}
while (*tc != OP_KET);
/* A DEFINE group is never obeyed inline (the "condition" is always
false). It must have only one branch. */
if (code[LINK_SIZE+1] == OP_DEF)
{
if (condcount > 1)
{
*errorcodeptr = ERR54;
goto FAILED;
}
bravalue = OP_DEF; /* Just a flag to suppress char handling below */
}
/* A "normal" conditional group. If there is just one branch, we must not
make use of its firstchar or reqchar, because this is equivalent to an
empty second branch. */
else
{
if (condcount > 2)
{
*errorcodeptr = ERR27;
goto FAILED;
}
if (condcount == 1) subfirstcharflags = subreqcharflags = REQ_NONE;
}
}
/* Error if hit end of pattern */
if (*ptr != CHAR_RIGHT_PARENTHESIS)
{
*errorcodeptr = ERR14;
goto FAILED;
}
/* In the pre-compile phase, update the length by the length of the group,
less the brackets at either end. Then reduce the compiled code to just a
set of non-capturing brackets so that it doesn't use much memory if it is
duplicated by a quantifier.*/
if (lengthptr != NULL)
{
if (OFLOW_MAX - *lengthptr < length_prevgroup - 2 - 2*LINK_SIZE)
{
*errorcodeptr = ERR20;
goto FAILED;
}
*lengthptr += length_prevgroup - 2 - 2*LINK_SIZE;
code++; /* This already contains bravalue */
PUTINC(code, 0, 1 + LINK_SIZE);
*code++ = OP_KET;
PUTINC(code, 0, 1 + LINK_SIZE);
break; /* No need to waste time with special character handling */
}
/* Otherwise update the main code pointer to the end of the group. */
code = tempcode;
/* For a DEFINE group, required and first character settings are not
relevant. */
if (bravalue == OP_DEF) break;
/* Handle updating of the required and first characters for other types of
group. Update for normal brackets of all kinds, and conditions with two
branches (see code above). If the bracket is followed by a quantifier with
zero repeat, we have to back off. Hence the definition of zeroreqchar and
zerofirstchar outside the main loop so that they can be accessed for the
back off. */
zeroreqchar = reqchar;
zeroreqcharflags = reqcharflags;
zerofirstchar = firstchar;
zerofirstcharflags = firstcharflags;
groupsetfirstchar = FALSE;
if (bravalue >= OP_ONCE)
{
/* If we have not yet set a firstchar in this branch, take it from the
subpattern, remembering that it was set here so that a repeat of more
than one can replicate it as reqchar if necessary. If the subpattern has
no firstchar, set "none" for the whole branch. In both cases, a zero
repeat forces firstchar to "none". */
if (firstcharflags == REQ_UNSET)
{
if (subfirstcharflags >= 0)
{
firstchar = subfirstchar;
firstcharflags = subfirstcharflags;
groupsetfirstchar = TRUE;
}
else firstcharflags = REQ_NONE;
zerofirstcharflags = REQ_NONE;
}
/* If firstchar was previously set, convert the subpattern's firstchar
into reqchar if there wasn't one, using the vary flag that was in
existence beforehand. */
else if (subfirstcharflags >= 0 && subreqcharflags < 0)
{
subreqchar = subfirstchar;
subreqcharflags = subfirstcharflags | tempreqvary;
}
/* If the subpattern set a required byte (or set a first byte that isn't
really the first byte - see above), set it. */
if (subreqcharflags >= 0)
{
reqchar = subreqchar;
reqcharflags = subreqcharflags;
}
}
/* For a forward assertion, we take the reqchar, if set, provided that the
group has also set a first char. This can be helpful if the pattern that
follows the assertion doesn't set a different char. For example, it's
useful for /(?=abcde).+/. We can't set firstchar for an assertion, however
because it leads to incorrect effect for patterns such as /(?=a)a.+/ when
the "real" "a" would then become a reqchar instead of a firstchar. This is
overcome by a scan at the end if there's no firstchar, looking for an
asserted first char. */
else if (bravalue == OP_ASSERT && subreqcharflags >= 0 &&
subfirstcharflags >= 0)
{
reqchar = subreqchar;
reqcharflags = subreqcharflags;
}
break; /* End of processing '(' */
/* ===================================================================*/
/* Handle metasequences introduced by \. For ones like \d, the ESC_ values
are arranged to be the negation of the corresponding OP_values in the
default case when PCRE_UCP is not set. For the back references, the values
are negative the reference number. Only back references and those types
that consume a character may be repeated. We can test for values between
ESC_b and ESC_Z for the latter; this may have to change if any new ones are
ever created. */
case CHAR_BACKSLASH:
tempptr = ptr;
escape = check_escape(&ptr, &ec, errorcodeptr, cd->bracount, options, FALSE);
if (*errorcodeptr != 0) goto FAILED;
if (escape == 0) /* The escape coded a single character */
c = ec;
else
{
/* For metasequences that actually match a character, we disable the
setting of a first character if it hasn't already been set. */
if (firstcharflags == REQ_UNSET && escape > ESC_b && escape < ESC_Z)
firstcharflags = REQ_NONE;
/* Set values to reset to if this is followed by a zero repeat. */
zerofirstchar = firstchar;
zerofirstcharflags = firstcharflags;
zeroreqchar = reqchar;
zeroreqcharflags = reqcharflags;
/* \g<name> or \g'name' is a subroutine call by name and \g<n> or \g'n'
is a subroutine call by number (Oniguruma syntax). In fact, the value
ESC_g is returned only for these cases. So we don't need to check for <
or ' if the value is ESC_g. For the Perl syntax \g{n} the value is
-n, and for the Perl syntax \g{name} the result is ESC_k (as
that is a synonym for a named back reference). */
if (escape == ESC_g)
{
const pcre_uchar *p;
pcre_uint32 cf;
item_hwm_offset = cd->hwm - cd->start_workspace; /* Normally this is set when '(' is read */
terminator = (*(++ptr) == CHAR_LESS_THAN_SIGN)?
CHAR_GREATER_THAN_SIGN : CHAR_APOSTROPHE;
/* These two statements stop the compiler for warning about possibly
unset variables caused by the jump to HANDLE_NUMERICAL_RECURSION. In
fact, because we do the check for a number below, the paths that
would actually be in error are never taken. */
skipbytes = 0;
reset_bracount = FALSE;
/* If it's not a signed or unsigned number, treat it as a name. */
cf = ptr[1];
if (cf != CHAR_PLUS && cf != CHAR_MINUS && !IS_DIGIT(cf))
{
is_recurse = TRUE;
goto NAMED_REF_OR_RECURSE;
}
/* Signed or unsigned number (cf = ptr[1]) is known to be plus or minus
or a digit. */
p = ptr + 2;
while (IS_DIGIT(*p)) p++;
if (*p != (pcre_uchar)terminator)
{
*errorcodeptr = ERR57;
goto FAILED;
}
ptr++;
goto HANDLE_NUMERICAL_RECURSION;
}
/* \k<name> or \k'name' is a back reference by name (Perl syntax).
We also support \k{name} (.NET syntax). */
if (escape == ESC_k)
{
if ((ptr[1] != CHAR_LESS_THAN_SIGN &&
ptr[1] != CHAR_APOSTROPHE && ptr[1] != CHAR_LEFT_CURLY_BRACKET))
{
*errorcodeptr = ERR69;
goto FAILED;
}
is_recurse = FALSE;
terminator = (*(++ptr) == CHAR_LESS_THAN_SIGN)?
CHAR_GREATER_THAN_SIGN : (*ptr == CHAR_APOSTROPHE)?
CHAR_APOSTROPHE : CHAR_RIGHT_CURLY_BRACKET;
goto NAMED_REF_OR_RECURSE;
}
/* Back references are handled specially; must disable firstchar if
not set to cope with cases like (?=(\w+))\1: which would otherwise set
':' later. */
if (escape < 0)
{
open_capitem *oc;
recno = -escape;
/* Come here from named backref handling when the reference is to a
single group (i.e. not to a duplicated name. */
HANDLE_REFERENCE:
if (firstcharflags == REQ_UNSET) zerofirstcharflags = firstcharflags = REQ_NONE;
previous = code;
item_hwm_offset = cd->hwm - cd->start_workspace;
*code++ = ((options & PCRE_CASELESS) != 0)? OP_REFI : OP_REF;
PUT2INC(code, 0, recno);
cd->backref_map |= (recno < 32)? (1U << recno) : 1;
if (recno > cd->top_backref) cd->top_backref = recno;
/* Check to see if this back reference is recursive, that it, it
is inside the group that it references. A flag is set so that the
group can be made atomic. */
for (oc = cd->open_caps; oc != NULL; oc = oc->next)
{
if (oc->number == recno)
{
oc->flag = TRUE;
break;
}
}
}
/* So are Unicode property matches, if supported. */
#ifdef SUPPORT_UCP
else if (escape == ESC_P || escape == ESC_p)
{
BOOL negated;
unsigned int ptype = 0, pdata = 0;
if (!get_ucp(&ptr, &negated, &ptype, &pdata, errorcodeptr))
goto FAILED;
previous = code;
item_hwm_offset = cd->hwm - cd->start_workspace;
*code++ = ((escape == ESC_p) != negated)? OP_PROP : OP_NOTPROP;
*code++ = ptype;
*code++ = pdata;
}
#else
/* If Unicode properties are not supported, \X, \P, and \p are not
allowed. */
else if (escape == ESC_X || escape == ESC_P || escape == ESC_p)
{
*errorcodeptr = ERR45;
goto FAILED;
}
#endif
/* For the rest (including \X when Unicode properties are supported), we
can obtain the OP value by negating the escape value in the default
situation when PCRE_UCP is not set. When it *is* set, we substitute
Unicode property tests. Note that \b and \B do a one-character
lookbehind, and \A also behaves as if it does. */
else
{
if ((escape == ESC_b || escape == ESC_B || escape == ESC_A) &&
cd->max_lookbehind == 0)
cd->max_lookbehind = 1;
#ifdef SUPPORT_UCP
if (escape >= ESC_DU && escape <= ESC_wu)
{
nestptr = ptr + 1; /* Where to resume */
ptr = substitutes[escape - ESC_DU] - 1; /* Just before substitute */
}
else
#endif
/* In non-UTF-8 mode, we turn \C into OP_ALLANY instead of OP_ANYBYTE
so that it works in DFA mode and in lookbehinds. */
{
previous = (escape > ESC_b && escape < ESC_Z)? code : NULL;
item_hwm_offset = cd->hwm - cd->start_workspace;
*code++ = (!utf && escape == ESC_C)? OP_ALLANY : escape;
}
}
continue;
}
/* We have a data character whose value is in c. In UTF-8 mode it may have
a value > 127. We set its representation in the length/buffer, and then
handle it as a data character. */
#if defined SUPPORT_UTF && !defined COMPILE_PCRE32
if (utf && c > MAX_VALUE_FOR_SINGLE_CHAR)
mclength = PRIV(ord2utf)(c, mcbuffer);
else
#endif
{
mcbuffer[0] = c;
mclength = 1;
}
goto ONE_CHAR;
/* ===================================================================*/
/* Handle a literal character. It is guaranteed not to be whitespace or #
when the extended flag is set. If we are in a UTF mode, it may be a
multi-unit literal character. */
default:
NORMAL_CHAR:
mclength = 1;
mcbuffer[0] = c;
#ifdef SUPPORT_UTF
if (utf && HAS_EXTRALEN(c))
ACROSSCHAR(TRUE, ptr[1], mcbuffer[mclength++] = *(++ptr));
#endif
/* At this point we have the character's bytes in mcbuffer, and the length
in mclength. When not in UTF-8 mode, the length is always 1. */
ONE_CHAR:
previous = code;
item_hwm_offset = cd->hwm - cd->start_workspace;
/* For caseless UTF-8 mode when UCP support is available, check whether
this character has more than one other case. If so, generate a special
OP_PROP item instead of OP_CHARI. */
#ifdef SUPPORT_UCP
if (utf && (options & PCRE_CASELESS) != 0)
{
GETCHAR(c, mcbuffer);
if ((c = UCD_CASESET(c)) != 0)
{
*code++ = OP_PROP;
*code++ = PT_CLIST;
*code++ = c;
if (firstcharflags == REQ_UNSET)
firstcharflags = zerofirstcharflags = REQ_NONE;
break;
}
}
#endif
/* Caseful matches, or not one of the multicase characters. */
*code++ = ((options & PCRE_CASELESS) != 0)? OP_CHARI : OP_CHAR;
for (c = 0; c < mclength; c++) *code++ = mcbuffer[c];
/* Remember if \r or \n were seen */
if (mcbuffer[0] == CHAR_CR || mcbuffer[0] == CHAR_NL)
cd->external_flags |= PCRE_HASCRORLF;
/* Set the first and required bytes appropriately. If no previous first
byte, set it from this character, but revert to none on a zero repeat.
Otherwise, leave the firstchar value alone, and don't change it on a zero
repeat. */
if (firstcharflags == REQ_UNSET)
{
zerofirstcharflags = REQ_NONE;
zeroreqchar = reqchar;
zeroreqcharflags = reqcharflags;
/* If the character is more than one byte long, we can set firstchar
only if it is not to be matched caselessly. */
if (mclength == 1 || req_caseopt == 0)
{
firstchar = mcbuffer[0];
firstcharflags = req_caseopt;
if (mclength != 1)
{
reqchar = code[-1];
reqcharflags = cd->req_varyopt;
}
}
else firstcharflags = reqcharflags = REQ_NONE;
}
/* firstchar was previously set; we can set reqchar only if the length is
1 or the matching is caseful. */
else
{
zerofirstchar = firstchar;
zerofirstcharflags = firstcharflags;
zeroreqchar = reqchar;
zeroreqcharflags = reqcharflags;
if (mclength == 1 || req_caseopt == 0)
{
reqchar = code[-1];
reqcharflags = req_caseopt | cd->req_varyopt;
}
}
break; /* End of literal character handling */
}
} /* end of big loop */
/* Control never reaches here by falling through, only by a goto for all the
error states. Pass back the position in the pattern so that it can be displayed
to the user for diagnosing the error. */
FAILED:
*ptrptr = ptr;
return FALSE;
}
/*************************************************
* Compile sequence of alternatives *
*************************************************/
/* On entry, ptr is pointing past the bracket character, but on return it
points to the closing bracket, or vertical bar, or end of string. The code
variable is pointing at the byte into which the BRA operator has been stored.
This function is used during the pre-compile phase when we are trying to find
out the amount of memory needed, as well as during the real compile phase. The
value of lengthptr distinguishes the two phases.
Arguments:
options option bits, including any changes for this subpattern
codeptr -> the address of the current code pointer
ptrptr -> the address of the current pattern pointer
errorcodeptr -> pointer to error code variable
lookbehind TRUE if this is a lookbehind assertion
reset_bracount TRUE to reset the count for each branch
skipbytes skip this many bytes at start (for brackets and OP_COND)
cond_depth depth of nesting for conditional subpatterns
firstcharptr place to put the first required character
firstcharflagsptr place to put the first character flags, or a negative number
reqcharptr place to put the last required character
reqcharflagsptr place to put the last required character flags, or a negative number
bcptr pointer to the chain of currently open branches
cd points to the data block with tables pointers etc.
lengthptr NULL during the real compile phase
points to length accumulator during pre-compile phase
Returns: TRUE on success
*/
static BOOL
compile_regex(int options, pcre_uchar **codeptr, const pcre_uchar **ptrptr,
int *errorcodeptr, BOOL lookbehind, BOOL reset_bracount, int skipbytes,
int cond_depth,
pcre_uint32 *firstcharptr, pcre_int32 *firstcharflagsptr,
pcre_uint32 *reqcharptr, pcre_int32 *reqcharflagsptr,
branch_chain *bcptr, compile_data *cd, int *lengthptr)
{
const pcre_uchar *ptr = *ptrptr;
pcre_uchar *code = *codeptr;
pcre_uchar *last_branch = code;
pcre_uchar *start_bracket = code;
pcre_uchar *reverse_count = NULL;
open_capitem capitem;
int capnumber = 0;
pcre_uint32 firstchar, reqchar;
pcre_int32 firstcharflags, reqcharflags;
pcre_uint32 branchfirstchar, branchreqchar;
pcre_int32 branchfirstcharflags, branchreqcharflags;
int length;
unsigned int orig_bracount;
unsigned int max_bracount;
branch_chain bc;
size_t save_hwm_offset;
/* If set, call the external function that checks for stack availability. */
if (PUBL(stack_guard) != NULL && PUBL(stack_guard)())
{
*errorcodeptr= ERR85;
return FALSE;
}
/* Miscellaneous initialization */
bc.outer = bcptr;
bc.current_branch = code;
firstchar = reqchar = 0;
firstcharflags = reqcharflags = REQ_UNSET;
save_hwm_offset = cd->hwm - cd->start_workspace;
/* Accumulate the length for use in the pre-compile phase. Start with the
length of the BRA and KET and any extra bytes that are required at the
beginning. We accumulate in a local variable to save frequent testing of
lenthptr for NULL. We cannot do this by looking at the value of code at the
start and end of each alternative, because compiled items are discarded during
the pre-compile phase so that the work space is not exceeded. */
length = 2 + 2*LINK_SIZE + skipbytes;
/* WARNING: If the above line is changed for any reason, you must also change
the code that abstracts option settings at the start of the pattern and makes
them global. It tests the value of length for (2 + 2*LINK_SIZE) in the
pre-compile phase to find out whether anything has yet been compiled or not. */
/* If this is a capturing subpattern, add to the chain of open capturing items
so that we can detect them if (*ACCEPT) is encountered. This is also used to
detect groups that contain recursive back references to themselves. Note that
only OP_CBRA need be tested here; changing this opcode to one of its variants,
e.g. OP_SCBRAPOS, happens later, after the group has been compiled. */
if (*code == OP_CBRA)
{
capnumber = GET2(code, 1 + LINK_SIZE);
capitem.number = capnumber;
capitem.next = cd->open_caps;
capitem.flag = FALSE;
cd->open_caps = &capitem;
}
/* Offset is set zero to mark that this bracket is still open */
PUT(code, 1, 0);
code += 1 + LINK_SIZE + skipbytes;
/* Loop for each alternative branch */
orig_bracount = max_bracount = cd->bracount;
for (;;)
{
/* For a (?| group, reset the capturing bracket count so that each branch
uses the same numbers. */
if (reset_bracount) cd->bracount = orig_bracount;
/* Set up dummy OP_REVERSE if lookbehind assertion */
if (lookbehind)
{
*code++ = OP_REVERSE;
reverse_count = code;
PUTINC(code, 0, 0);
length += 1 + LINK_SIZE;
}
/* Now compile the branch; in the pre-compile phase its length gets added
into the length. */
if (!compile_branch(&options, &code, &ptr, errorcodeptr, &branchfirstchar,
&branchfirstcharflags, &branchreqchar, &branchreqcharflags, &bc,
cond_depth, cd, (lengthptr == NULL)? NULL : &length))
{
*ptrptr = ptr;
return FALSE;
}
/* Keep the highest bracket count in case (?| was used and some branch
has fewer than the rest. */
if (cd->bracount > max_bracount) max_bracount = cd->bracount;
/* In the real compile phase, there is some post-processing to be done. */
if (lengthptr == NULL)
{
/* If this is the first branch, the firstchar and reqchar values for the
branch become the values for the regex. */
if (*last_branch != OP_ALT)
{
firstchar = branchfirstchar;
firstcharflags = branchfirstcharflags;
reqchar = branchreqchar;
reqcharflags = branchreqcharflags;
}
/* If this is not the first branch, the first char and reqchar have to
match the values from all the previous branches, except that if the
previous value for reqchar didn't have REQ_VARY set, it can still match,
and we set REQ_VARY for the regex. */
else
{
/* If we previously had a firstchar, but it doesn't match the new branch,
we have to abandon the firstchar for the regex, but if there was
previously no reqchar, it takes on the value of the old firstchar. */
if (firstcharflags >= 0 &&
(firstcharflags != branchfirstcharflags || firstchar != branchfirstchar))
{
if (reqcharflags < 0)
{
reqchar = firstchar;
reqcharflags = firstcharflags;
}
firstcharflags = REQ_NONE;
}
/* If we (now or from before) have no firstchar, a firstchar from the
branch becomes a reqchar if there isn't a branch reqchar. */
if (firstcharflags < 0 && branchfirstcharflags >= 0 && branchreqcharflags < 0)
{
branchreqchar = branchfirstchar;
branchreqcharflags = branchfirstcharflags;
}
/* Now ensure that the reqchars match */
if (((reqcharflags & ~REQ_VARY) != (branchreqcharflags & ~REQ_VARY)) ||
reqchar != branchreqchar)
reqcharflags = REQ_NONE;
else
{
reqchar = branchreqchar;
reqcharflags |= branchreqcharflags; /* To "or" REQ_VARY */
}
}
/* If lookbehind, check that this branch matches a fixed-length string, and
put the length into the OP_REVERSE item. Temporarily mark the end of the
branch with OP_END. If the branch contains OP_RECURSE, the result is -3
because there may be forward references that we can't check here. Set a
flag to cause another lookbehind check at the end. Why not do it all at the
end? Because common, erroneous checks are picked up here and the offset of
the problem can be shown. */
if (lookbehind)
{
int fixed_length;
*code = OP_END;
fixed_length = find_fixedlength(last_branch, (options & PCRE_UTF8) != 0,
FALSE, cd, NULL);
DPRINTF(("fixed length = %d\n", fixed_length));
if (fixed_length == -3)
{
cd->check_lookbehind = TRUE;
}
else if (fixed_length < 0)
{
*errorcodeptr = (fixed_length == -2)? ERR36 :
(fixed_length == -4)? ERR70: ERR25;
*ptrptr = ptr;
return FALSE;
}
else
{
if (fixed_length > cd->max_lookbehind)
cd->max_lookbehind = fixed_length;
PUT(reverse_count, 0, fixed_length);
}
}
}
/* Reached end of expression, either ')' or end of pattern. In the real
compile phase, go back through the alternative branches and reverse the chain
of offsets, with the field in the BRA item now becoming an offset to the
first alternative. If there are no alternatives, it points to the end of the
group. The length in the terminating ket is always the length of the whole
bracketed item. Return leaving the pointer at the terminating char. */
if (*ptr != CHAR_VERTICAL_LINE)
{
if (lengthptr == NULL)
{
int branch_length = (int)(code - last_branch);
do
{
int prev_length = GET(last_branch, 1);
PUT(last_branch, 1, branch_length);
branch_length = prev_length;
last_branch -= branch_length;
}
while (branch_length > 0);
}
/* Fill in the ket */
*code = OP_KET;
PUT(code, 1, (int)(code - start_bracket));
code += 1 + LINK_SIZE;
/* If it was a capturing subpattern, check to see if it contained any
recursive back references. If so, we must wrap it in atomic brackets.
Because we are moving code along, we must ensure that any pending recursive
references are updated. In any event, remove the block from the chain. */
if (capnumber > 0)
{
if (cd->open_caps->flag)
{
*code = OP_END;
adjust_recurse(start_bracket, 1 + LINK_SIZE,
(options & PCRE_UTF8) != 0, cd, save_hwm_offset);
memmove(start_bracket + 1 + LINK_SIZE, start_bracket,
IN_UCHARS(code - start_bracket));
*start_bracket = OP_ONCE;
code += 1 + LINK_SIZE;
PUT(start_bracket, 1, (int)(code - start_bracket));
*code = OP_KET;
PUT(code, 1, (int)(code - start_bracket));
code += 1 + LINK_SIZE;
length += 2 + 2*LINK_SIZE;
}
cd->open_caps = cd->open_caps->next;
}
/* Retain the highest bracket number, in case resetting was used. */
cd->bracount = max_bracount;
/* Set values to pass back */
*codeptr = code;
*ptrptr = ptr;
*firstcharptr = firstchar;
*firstcharflagsptr = firstcharflags;
*reqcharptr = reqchar;
*reqcharflagsptr = reqcharflags;
if (lengthptr != NULL)
{
if (OFLOW_MAX - *lengthptr < length)
{
*errorcodeptr = ERR20;
return FALSE;
}
*lengthptr += length;
}
return TRUE;
}
/* Another branch follows. In the pre-compile phase, we can move the code
pointer back to where it was for the start of the first branch. (That is,
pretend that each branch is the only one.)
In the real compile phase, insert an ALT node. Its length field points back
to the previous branch while the bracket remains open. At the end the chain
is reversed. It's done like this so that the start of the bracket has a
zero offset until it is closed, making it possible to detect recursion. */
if (lengthptr != NULL)
{
code = *codeptr + 1 + LINK_SIZE + skipbytes;
length += 1 + LINK_SIZE;
}
else
{
*code = OP_ALT;
PUT(code, 1, (int)(code - last_branch));
bc.current_branch = last_branch = code;
code += 1 + LINK_SIZE;
}
ptr++;
}
/* Control never reaches here */
}
/*************************************************
* Check for anchored expression *
*************************************************/
/* Try to find out if this is an anchored regular expression. Consider each
alternative branch. If they all start with OP_SOD or OP_CIRC, or with a bracket
all of whose alternatives start with OP_SOD or OP_CIRC (recurse ad lib), then
it's anchored. However, if this is a multiline pattern, then only OP_SOD will
be found, because ^ generates OP_CIRCM in that mode.
We can also consider a regex to be anchored if OP_SOM starts all its branches.
This is the code for \G, which means "match at start of match position, taking
into account the match offset".
A branch is also implicitly anchored if it starts with .* and DOTALL is set,
because that will try the rest of the pattern at all possible matching points,
so there is no point trying again.... er ....
.... except when the .* appears inside capturing parentheses, and there is a
subsequent back reference to those parentheses. We haven't enough information
to catch that case precisely.
At first, the best we could do was to detect when .* was in capturing brackets
and the highest back reference was greater than or equal to that level.
However, by keeping a bitmap of the first 31 back references, we can catch some
of the more common cases more precisely.
... A second exception is when the .* appears inside an atomic group, because
this prevents the number of characters it matches from being adjusted.
Arguments:
code points to start of expression (the bracket)
bracket_map a bitmap of which brackets we are inside while testing; this
handles up to substring 31; after that we just have to take
the less precise approach
cd points to the compile data block
atomcount atomic group level
Returns: TRUE or FALSE
*/
static BOOL
is_anchored(register const pcre_uchar *code, unsigned int bracket_map,
compile_data *cd, int atomcount)
{
do {
const pcre_uchar *scode = first_significant_code(
code + PRIV(OP_lengths)[*code], FALSE);
register int op = *scode;
/* Non-capturing brackets */
if (op == OP_BRA || op == OP_BRAPOS ||
op == OP_SBRA || op == OP_SBRAPOS)
{
if (!is_anchored(scode, bracket_map, cd, atomcount)) return FALSE;
}
/* Capturing brackets */
else if (op == OP_CBRA || op == OP_CBRAPOS ||
op == OP_SCBRA || op == OP_SCBRAPOS)
{
int n = GET2(scode, 1+LINK_SIZE);
int new_map = bracket_map | ((n < 32)? (1U << n) : 1);
if (!is_anchored(scode, new_map, cd, atomcount)) return FALSE;
}
/* Positive forward assertion */
else if (op == OP_ASSERT)
{
if (!is_anchored(scode, bracket_map, cd, atomcount)) return FALSE;
}
/* Condition; not anchored if no second branch */
else if (op == OP_COND)
{
if (scode[GET(scode,1)] != OP_ALT) return FALSE;
if (!is_anchored(scode, bracket_map, cd, atomcount)) return FALSE;
}
/* Atomic groups */
else if (op == OP_ONCE || op == OP_ONCE_NC)
{
if (!is_anchored(scode, bracket_map, cd, atomcount + 1))
return FALSE;
}
/* .* is not anchored unless DOTALL is set (which generates OP_ALLANY) and
it isn't in brackets that are or may be referenced or inside an atomic
group. */
else if ((op == OP_TYPESTAR || op == OP_TYPEMINSTAR ||
op == OP_TYPEPOSSTAR))
{
if (scode[1] != OP_ALLANY || (bracket_map & cd->backref_map) != 0 ||
atomcount > 0 || cd->had_pruneorskip)
return FALSE;
}
/* Check for explicit anchoring */
else if (op != OP_SOD && op != OP_SOM && op != OP_CIRC) return FALSE;
code += GET(code, 1);
}
while (*code == OP_ALT); /* Loop for each alternative */
return TRUE;
}
/*************************************************
* Check for starting with ^ or .* *
*************************************************/
/* This is called to find out if every branch starts with ^ or .* so that
"first char" processing can be done to speed things up in multiline
matching and for non-DOTALL patterns that start with .* (which must start at
the beginning or after \n). As in the case of is_anchored() (see above), we
have to take account of back references to capturing brackets that contain .*
because in that case we can't make the assumption. Also, the appearance of .*
inside atomic brackets or in an assertion, or in a pattern that contains *PRUNE
or *SKIP does not count, because once again the assumption no longer holds.
Arguments:
code points to start of expression (the bracket)
bracket_map a bitmap of which brackets we are inside while testing; this
handles up to substring 31; after that we just have to take
the less precise approach
cd points to the compile data
atomcount atomic group level
inassert TRUE if in an assertion
Returns: TRUE or FALSE
*/
static BOOL
is_startline(const pcre_uchar *code, unsigned int bracket_map,
compile_data *cd, int atomcount, BOOL inassert)
{
do {
const pcre_uchar *scode = first_significant_code(
code + PRIV(OP_lengths)[*code], FALSE);
register int op = *scode;
/* If we are at the start of a conditional assertion group, *both* the
conditional assertion *and* what follows the condition must satisfy the test
for start of line. Other kinds of condition fail. Note that there may be an
auto-callout at the start of a condition. */
if (op == OP_COND)
{
scode += 1 + LINK_SIZE;
if (*scode == OP_CALLOUT) scode += PRIV(OP_lengths)[OP_CALLOUT];
switch (*scode)
{
case OP_CREF:
case OP_DNCREF:
case OP_RREF:
case OP_DNRREF:
case OP_DEF:
case OP_FAIL:
return FALSE;
default: /* Assertion */
if (!is_startline(scode, bracket_map, cd, atomcount, TRUE)) return FALSE;
do scode += GET(scode, 1); while (*scode == OP_ALT);
scode += 1 + LINK_SIZE;
break;
}
scode = first_significant_code(scode, FALSE);
op = *scode;
}
/* Non-capturing brackets */
if (op == OP_BRA || op == OP_BRAPOS ||
op == OP_SBRA || op == OP_SBRAPOS)
{
if (!is_startline(scode, bracket_map, cd, atomcount, inassert)) return FALSE;
}
/* Capturing brackets */
else if (op == OP_CBRA || op == OP_CBRAPOS ||
op == OP_SCBRA || op == OP_SCBRAPOS)
{
int n = GET2(scode, 1+LINK_SIZE);
int new_map = bracket_map | ((n < 32)? (1U << n) : 1);
if (!is_startline(scode, new_map, cd, atomcount, inassert)) return FALSE;
}
/* Positive forward assertions */
else if (op == OP_ASSERT)
{
if (!is_startline(scode, bracket_map, cd, atomcount, TRUE)) return FALSE;
}
/* Atomic brackets */
else if (op == OP_ONCE || op == OP_ONCE_NC)
{
if (!is_startline(scode, bracket_map, cd, atomcount + 1, inassert)) return FALSE;
}
/* .* means "start at start or after \n" if it isn't in atomic brackets or
brackets that may be referenced or an assertion, as long as the pattern does
not contain *PRUNE or *SKIP, because these break the feature. Consider, for
example, /.*?a(*PRUNE)b/ with the subject "aab", which matches "ab", i.e.
not at the start of a line. */
else if (op == OP_TYPESTAR || op == OP_TYPEMINSTAR || op == OP_TYPEPOSSTAR)
{
if (scode[1] != OP_ANY || (bracket_map & cd->backref_map) != 0 ||
atomcount > 0 || cd->had_pruneorskip || inassert)
return FALSE;
}
/* Check for explicit circumflex; anything else gives a FALSE result. Note
in particular that this includes atomic brackets OP_ONCE and OP_ONCE_NC
because the number of characters matched by .* cannot be adjusted inside
them. */
else if (op != OP_CIRC && op != OP_CIRCM) return FALSE;
/* Move on to the next alternative */
code += GET(code, 1);
}
while (*code == OP_ALT); /* Loop for each alternative */
return TRUE;
}
/*************************************************
* Check for asserted fixed first char *
*************************************************/
/* During compilation, the "first char" settings from forward assertions are
discarded, because they can cause conflicts with actual literals that follow.
However, if we end up without a first char setting for an unanchored pattern,
it is worth scanning the regex to see if there is an initial asserted first
char. If all branches start with the same asserted char, or with a
non-conditional bracket all of whose alternatives start with the same asserted
char (recurse ad lib), then we return that char, with the flags set to zero or
REQ_CASELESS; otherwise return zero with REQ_NONE in the flags.
Arguments:
code points to start of expression (the bracket)
flags points to the first char flags, or to REQ_NONE
inassert TRUE if in an assertion
Returns: the fixed first char, or 0 with REQ_NONE in flags
*/
static pcre_uint32
find_firstassertedchar(const pcre_uchar *code, pcre_int32 *flags,
BOOL inassert)
{
register pcre_uint32 c = 0;
int cflags = REQ_NONE;
*flags = REQ_NONE;
do {
pcre_uint32 d;
int dflags;
int xl = (*code == OP_CBRA || *code == OP_SCBRA ||
*code == OP_CBRAPOS || *code == OP_SCBRAPOS)? IMM2_SIZE:0;
const pcre_uchar *scode = first_significant_code(code + 1+LINK_SIZE + xl,
TRUE);
register pcre_uchar op = *scode;
switch(op)
{
default:
return 0;
case OP_BRA:
case OP_BRAPOS:
case OP_CBRA:
case OP_SCBRA:
case OP_CBRAPOS:
case OP_SCBRAPOS:
case OP_ASSERT:
case OP_ONCE:
case OP_ONCE_NC:
d = find_firstassertedchar(scode, &dflags, op == OP_ASSERT);
if (dflags < 0)
return 0;
if (cflags < 0) { c = d; cflags = dflags; } else if (c != d || cflags != dflags) return 0;
break;
case OP_EXACT:
scode += IMM2_SIZE;
/* Fall through */
case OP_CHAR:
case OP_PLUS:
case OP_MINPLUS:
case OP_POSPLUS:
if (!inassert) return 0;
if (cflags < 0) { c = scode[1]; cflags = 0; }
else if (c != scode[1]) return 0;
break;
case OP_EXACTI:
scode += IMM2_SIZE;
/* Fall through */
case OP_CHARI:
case OP_PLUSI:
case OP_MINPLUSI:
case OP_POSPLUSI:
if (!inassert) return 0;
if (cflags < 0) { c = scode[1]; cflags = REQ_CASELESS; }
else if (c != scode[1]) return 0;
break;
}
code += GET(code, 1);
}
while (*code == OP_ALT);
*flags = cflags;
return c;
}
/*************************************************
* Add an entry to the name/number table *
*************************************************/
/* This function is called between compiling passes to add an entry to the
name/number table, maintaining alphabetical order. Checking for permitted
and forbidden duplicates has already been done.
Arguments:
cd the compile data block
name the name to add
length the length of the name
groupno the group number
Returns: nothing
*/
static void
add_name(compile_data *cd, const pcre_uchar *name, int length,
unsigned int groupno)
{
int i;
pcre_uchar *slot = cd->name_table;
for (i = 0; i < cd->names_found; i++)
{
int crc = memcmp(name, slot+IMM2_SIZE, IN_UCHARS(length));
if (crc == 0 && slot[IMM2_SIZE+length] != 0)
crc = -1; /* Current name is a substring */
/* Make space in the table and break the loop for an earlier name. For a
duplicate or later name, carry on. We do this for duplicates so that in the
simple case (when ?(| is not used) they are in order of their numbers. In all
cases they are in the order in which they appear in the pattern. */
if (crc < 0)
{
memmove(slot + cd->name_entry_size, slot,
IN_UCHARS((cd->names_found - i) * cd->name_entry_size));
break;
}
/* Continue the loop for a later or duplicate name */
slot += cd->name_entry_size;
}
PUT2(slot, 0, groupno);
memcpy(slot + IMM2_SIZE, name, IN_UCHARS(length));
slot[IMM2_SIZE + length] = 0;
cd->names_found++;
}
/*************************************************
* Compile a Regular Expression *
*************************************************/
/* This function takes a string and returns a pointer to a block of store
holding a compiled version of the expression. The original API for this
function had no error code return variable; it is retained for backwards
compatibility. The new function is given a new name.
Arguments:
pattern the regular expression
options various option bits
errorcodeptr pointer to error code variable (pcre_compile2() only)
can be NULL if you don't want a code value
errorptr pointer to pointer to error text
erroroffset ptr offset in pattern where error was detected
tables pointer to character tables or NULL
Returns: pointer to compiled data block, or NULL on error,
with errorptr and erroroffset set
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN pcre * PCRE_CALL_CONVENTION
pcre_compile(const char *pattern, int options, const char **errorptr,
int *erroroffset, const unsigned char *tables)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN pcre16 * PCRE_CALL_CONVENTION
pcre16_compile(PCRE_SPTR16 pattern, int options, const char **errorptr,
int *erroroffset, const unsigned char *tables)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN pcre32 * PCRE_CALL_CONVENTION
pcre32_compile(PCRE_SPTR32 pattern, int options, const char **errorptr,
int *erroroffset, const unsigned char *tables)
#endif
{
#if defined COMPILE_PCRE8
return pcre_compile2(pattern, options, NULL, errorptr, erroroffset, tables);
#elif defined COMPILE_PCRE16
return pcre16_compile2(pattern, options, NULL, errorptr, erroroffset, tables);
#elif defined COMPILE_PCRE32
return pcre32_compile2(pattern, options, NULL, errorptr, erroroffset, tables);
#endif
}
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN pcre * PCRE_CALL_CONVENTION
pcre_compile2(const char *pattern, int options, int *errorcodeptr,
const char **errorptr, int *erroroffset, const unsigned char *tables)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN pcre16 * PCRE_CALL_CONVENTION
pcre16_compile2(PCRE_SPTR16 pattern, int options, int *errorcodeptr,
const char **errorptr, int *erroroffset, const unsigned char *tables)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN pcre32 * PCRE_CALL_CONVENTION
pcre32_compile2(PCRE_SPTR32 pattern, int options, int *errorcodeptr,
const char **errorptr, int *erroroffset, const unsigned char *tables)
#endif
{
REAL_PCRE *re;
int length = 1; /* For final END opcode */
pcre_int32 firstcharflags, reqcharflags;
pcre_uint32 firstchar, reqchar;
pcre_uint32 limit_match = PCRE_UINT32_MAX;
pcre_uint32 limit_recursion = PCRE_UINT32_MAX;
int newline;
int errorcode = 0;
int skipatstart = 0;
BOOL utf;
BOOL never_utf = FALSE;
size_t size;
pcre_uchar *code;
const pcre_uchar *codestart;
const pcre_uchar *ptr;
compile_data compile_block;
compile_data *cd = &compile_block;
/* This space is used for "compiling" into during the first phase, when we are
computing the amount of memory that is needed. Compiled items are thrown away
as soon as possible, so that a fairly large buffer should be sufficient for
this purpose. The same space is used in the second phase for remembering where
to fill in forward references to subpatterns. That may overflow, in which case
new memory is obtained from malloc(). */
pcre_uchar cworkspace[COMPILE_WORK_SIZE];
/* This vector is used for remembering name groups during the pre-compile. In a
similar way to cworkspace, it can be expanded using malloc() if necessary. */
named_group named_groups[NAMED_GROUP_LIST_SIZE];
/* Set this early so that early errors get offset 0. */
ptr = (const pcre_uchar *)pattern;
/* We can't pass back an error message if errorptr is NULL; I guess the best we
can do is just return NULL, but we can set a code value if there is a code
pointer. */
if (errorptr == NULL)
{
if (errorcodeptr != NULL) *errorcodeptr = 99;
return NULL;
}
*errorptr = NULL;
if (errorcodeptr != NULL) *errorcodeptr = ERR0;
/* However, we can give a message for this error */
if (erroroffset == NULL)
{
errorcode = ERR16;
goto PCRE_EARLY_ERROR_RETURN2;
}
*erroroffset = 0;
/* Set up pointers to the individual character tables */
if (tables == NULL) tables = PRIV(default_tables);
cd->lcc = tables + lcc_offset;
cd->fcc = tables + fcc_offset;
cd->cbits = tables + cbits_offset;
cd->ctypes = tables + ctypes_offset;
/* Check that all undefined public option bits are zero */
if ((options & ~PUBLIC_COMPILE_OPTIONS) != 0)
{
errorcode = ERR17;
goto PCRE_EARLY_ERROR_RETURN;
}
/* If PCRE_NEVER_UTF is set, remember it. */
if ((options & PCRE_NEVER_UTF) != 0) never_utf = TRUE;
/* Check for global one-time settings at the start of the pattern, and remember
the offset for later. */
cd->external_flags = 0; /* Initialize here for LIMIT_MATCH/RECURSION */
while (ptr[skipatstart] == CHAR_LEFT_PARENTHESIS &&
ptr[skipatstart+1] == CHAR_ASTERISK)
{
int newnl = 0;
int newbsr = 0;
/* For completeness and backward compatibility, (*UTFn) is supported in the
relevant libraries, but (*UTF) is generic and always supported. Note that
PCRE_UTF8 == PCRE_UTF16 == PCRE_UTF32. */
#ifdef COMPILE_PCRE8
if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_UTF8_RIGHTPAR, 5) == 0)
{ skipatstart += 7; options |= PCRE_UTF8; continue; }
#endif
#ifdef COMPILE_PCRE16
if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_UTF16_RIGHTPAR, 6) == 0)
{ skipatstart += 8; options |= PCRE_UTF16; continue; }
#endif
#ifdef COMPILE_PCRE32
if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_UTF32_RIGHTPAR, 6) == 0)
{ skipatstart += 8; options |= PCRE_UTF32; continue; }
#endif
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_UTF_RIGHTPAR, 4) == 0)
{ skipatstart += 6; options |= PCRE_UTF8; continue; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_UCP_RIGHTPAR, 4) == 0)
{ skipatstart += 6; options |= PCRE_UCP; continue; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_NO_AUTO_POSSESS_RIGHTPAR, 16) == 0)
{ skipatstart += 18; options |= PCRE_NO_AUTO_POSSESS; continue; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_NO_START_OPT_RIGHTPAR, 13) == 0)
{ skipatstart += 15; options |= PCRE_NO_START_OPTIMIZE; continue; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_LIMIT_MATCH_EQ, 12) == 0)
{
pcre_uint32 c = 0;
int p = skipatstart + 14;
while (isdigit(ptr[p]))
{
if (c > PCRE_UINT32_MAX / 10 - 1) break; /* Integer overflow */
c = c*10 + ptr[p++] - CHAR_0;
}
if (ptr[p++] != CHAR_RIGHT_PARENTHESIS) break;
if (c < limit_match)
{
limit_match = c;
cd->external_flags |= PCRE_MLSET;
}
skipatstart = p;
continue;
}
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_LIMIT_RECURSION_EQ, 16) == 0)
{
pcre_uint32 c = 0;
int p = skipatstart + 18;
while (isdigit(ptr[p]))
{
if (c > PCRE_UINT32_MAX / 10 - 1) break; /* Integer overflow check */
c = c*10 + ptr[p++] - CHAR_0;
}
if (ptr[p++] != CHAR_RIGHT_PARENTHESIS) break;
if (c < limit_recursion)
{
limit_recursion = c;
cd->external_flags |= PCRE_RLSET;
}
skipatstart = p;
continue;
}
if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_CR_RIGHTPAR, 3) == 0)
{ skipatstart += 5; newnl = PCRE_NEWLINE_CR; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_LF_RIGHTPAR, 3) == 0)
{ skipatstart += 5; newnl = PCRE_NEWLINE_LF; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_CRLF_RIGHTPAR, 5) == 0)
{ skipatstart += 7; newnl = PCRE_NEWLINE_CR + PCRE_NEWLINE_LF; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_ANY_RIGHTPAR, 4) == 0)
{ skipatstart += 6; newnl = PCRE_NEWLINE_ANY; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_ANYCRLF_RIGHTPAR, 8) == 0)
{ skipatstart += 10; newnl = PCRE_NEWLINE_ANYCRLF; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_BSR_ANYCRLF_RIGHTPAR, 12) == 0)
{ skipatstart += 14; newbsr = PCRE_BSR_ANYCRLF; }
else if (STRNCMP_UC_C8(ptr+skipatstart+2, STRING_BSR_UNICODE_RIGHTPAR, 12) == 0)
{ skipatstart += 14; newbsr = PCRE_BSR_UNICODE; }
if (newnl != 0)
options = (options & ~PCRE_NEWLINE_BITS) | newnl;
else if (newbsr != 0)
options = (options & ~(PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)) | newbsr;
else break;
}
/* PCRE_UTF(16|32) have the same value as PCRE_UTF8. */
utf = (options & PCRE_UTF8) != 0;
if (utf && never_utf)
{
errorcode = ERR78;
goto PCRE_EARLY_ERROR_RETURN2;
}
/* Can't support UTF unless PCRE has been compiled to include the code. The
return of an error code from PRIV(valid_utf)() is a new feature, introduced in
release 8.13. It is passed back from pcre_[dfa_]exec(), but at the moment is
not used here. */
#ifdef SUPPORT_UTF
if (utf && (options & PCRE_NO_UTF8_CHECK) == 0 &&
(errorcode = PRIV(valid_utf)((PCRE_PUCHAR)pattern, -1, erroroffset)) != 0)
{
#if defined COMPILE_PCRE8
errorcode = ERR44;
#elif defined COMPILE_PCRE16
errorcode = ERR74;
#elif defined COMPILE_PCRE32
errorcode = ERR77;
#endif
goto PCRE_EARLY_ERROR_RETURN2;
}
#else
if (utf)
{
errorcode = ERR32;
goto PCRE_EARLY_ERROR_RETURN;
}
#endif
/* Can't support UCP unless PCRE has been compiled to include the code. */
#ifndef SUPPORT_UCP
if ((options & PCRE_UCP) != 0)
{
errorcode = ERR67;
goto PCRE_EARLY_ERROR_RETURN;
}
#endif
/* Check validity of \R options. */
if ((options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)) ==
(PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE))
{
errorcode = ERR56;
goto PCRE_EARLY_ERROR_RETURN;
}
/* Handle different types of newline. The three bits give seven cases. The
current code allows for fixed one- or two-byte sequences, plus "any" and
"anycrlf". */
switch (options & PCRE_NEWLINE_BITS)
{
case 0: newline = NEWLINE; break; /* Build-time default */
case PCRE_NEWLINE_CR: newline = CHAR_CR; break;
case PCRE_NEWLINE_LF: newline = CHAR_NL; break;
case PCRE_NEWLINE_CR+
PCRE_NEWLINE_LF: newline = (CHAR_CR << 8) | CHAR_NL; break;
case PCRE_NEWLINE_ANY: newline = -1; break;
case PCRE_NEWLINE_ANYCRLF: newline = -2; break;
default: errorcode = ERR56; goto PCRE_EARLY_ERROR_RETURN;
}
if (newline == -2)
{
cd->nltype = NLTYPE_ANYCRLF;
}
else if (newline < 0)
{
cd->nltype = NLTYPE_ANY;
}
else
{
cd->nltype = NLTYPE_FIXED;
if (newline > 255)
{
cd->nllen = 2;
cd->nl[0] = (newline >> 8) & 255;
cd->nl[1] = newline & 255;
}
else
{
cd->nllen = 1;
cd->nl[0] = newline;
}
}
/* Maximum back reference and backref bitmap. The bitmap records up to 31 back
references to help in deciding whether (.*) can be treated as anchored or not.
*/
cd->top_backref = 0;
cd->backref_map = 0;
/* Reflect pattern for debugging output */
DPRINTF(("------------------------------------------------------------------\n"));
#ifdef PCRE_DEBUG
print_puchar(stdout, (PCRE_PUCHAR)pattern);
#endif
DPRINTF(("\n"));
/* Pretend to compile the pattern while actually just accumulating the length
of memory required. This behaviour is triggered by passing a non-NULL final
argument to compile_regex(). We pass a block of workspace (cworkspace) for it
to compile parts of the pattern into; the compiled code is discarded when it is
no longer needed, so hopefully this workspace will never overflow, though there
is a test for its doing so. */
cd->bracount = cd->final_bracount = 0;
cd->names_found = 0;
cd->name_entry_size = 0;
cd->name_table = NULL;
cd->dupnames = FALSE;
cd->dupgroups = FALSE;
cd->namedrefcount = 0;
cd->start_code = cworkspace;
cd->hwm = cworkspace;
cd->iscondassert = FALSE;
cd->start_workspace = cworkspace;
cd->workspace_size = COMPILE_WORK_SIZE;
cd->named_groups = named_groups;
cd->named_group_list_size = NAMED_GROUP_LIST_SIZE;
cd->start_pattern = (const pcre_uchar *)pattern;
cd->end_pattern = (const pcre_uchar *)(pattern + STRLEN_UC((const pcre_uchar *)pattern));
cd->req_varyopt = 0;
cd->parens_depth = 0;
cd->assert_depth = 0;
cd->max_lookbehind = 0;
cd->external_options = options;
cd->open_caps = NULL;
/* Now do the pre-compile. On error, errorcode will be set non-zero, so we
don't need to look at the result of the function here. The initial options have
been put into the cd block so that they can be changed if an option setting is
found within the regex right at the beginning. Bringing initial option settings
outside can help speed up starting point checks. */
ptr += skipatstart;
code = cworkspace;
*code = OP_BRA;
(void)compile_regex(cd->external_options, &code, &ptr, &errorcode, FALSE,
FALSE, 0, 0, &firstchar, &firstcharflags, &reqchar, &reqcharflags, NULL,
cd, &length);
if (errorcode != 0) goto PCRE_EARLY_ERROR_RETURN;
DPRINTF(("end pre-compile: length=%d workspace=%d\n", length,
(int)(cd->hwm - cworkspace)));
if (length > MAX_PATTERN_SIZE)
{
errorcode = ERR20;
goto PCRE_EARLY_ERROR_RETURN;
}
/* Compute the size of the data block for storing the compiled pattern. Integer
overflow should no longer be possible because nowadays we limit the maximum
value of cd->names_found and cd->name_entry_size. */
size = sizeof(REAL_PCRE) +
(length + cd->names_found * cd->name_entry_size) * sizeof(pcre_uchar);
/* Get the memory. */
re = (REAL_PCRE *)(PUBL(malloc))(size);
if (re == NULL)
{
errorcode = ERR21;
goto PCRE_EARLY_ERROR_RETURN;
}
/* Put in the magic number, and save the sizes, initial options, internal
flags, and character table pointer. NULL is used for the default character
tables. The nullpad field is at the end; it's there to help in the case when a
regex compiled on a system with 4-byte pointers is run on another with 8-byte
pointers. */
re->magic_number = MAGIC_NUMBER;
re->size = (int)size;
re->options = cd->external_options;
re->flags = cd->external_flags;
re->limit_match = limit_match;
re->limit_recursion = limit_recursion;
re->first_char = 0;
re->req_char = 0;
re->name_table_offset = sizeof(REAL_PCRE) / sizeof(pcre_uchar);
re->name_entry_size = cd->name_entry_size;
re->name_count = cd->names_found;
re->ref_count = 0;
re->tables = (tables == PRIV(default_tables))? NULL : tables;
re->nullpad = NULL;
#ifdef COMPILE_PCRE32
re->dummy = 0;
#else
re->dummy1 = re->dummy2 = re->dummy3 = 0;
#endif
/* The starting points of the name/number translation table and of the code are
passed around in the compile data block. The start/end pattern and initial
options are already set from the pre-compile phase, as is the name_entry_size
field. Reset the bracket count and the names_found field. Also reset the hwm
field; this time it's used for remembering forward references to subpatterns.
*/
cd->final_bracount = cd->bracount; /* Save for checking forward references */
cd->parens_depth = 0;
cd->assert_depth = 0;
cd->bracount = 0;
cd->max_lookbehind = 0;
cd->name_table = (pcre_uchar *)re + re->name_table_offset;
codestart = cd->name_table + re->name_entry_size * re->name_count;
cd->start_code = codestart;
cd->hwm = (pcre_uchar *)(cd->start_workspace);
cd->iscondassert = FALSE;
cd->req_varyopt = 0;
cd->had_accept = FALSE;
cd->had_pruneorskip = FALSE;
cd->check_lookbehind = FALSE;
cd->open_caps = NULL;
/* If any named groups were found, create the name/number table from the list
created in the first pass. */
if (cd->names_found > 0)
{
int i = cd->names_found;
named_group *ng = cd->named_groups;
cd->names_found = 0;
for (; i > 0; i--, ng++)
add_name(cd, ng->name, ng->length, ng->number);
if (cd->named_group_list_size > NAMED_GROUP_LIST_SIZE)
(PUBL(free))((void *)cd->named_groups);
}
/* Set up a starting, non-extracting bracket, then compile the expression. On
error, errorcode will be set non-zero, so we don't need to look at the result
of the function here. */
ptr = (const pcre_uchar *)pattern + skipatstart;
code = (pcre_uchar *)codestart;
*code = OP_BRA;
(void)compile_regex(re->options, &code, &ptr, &errorcode, FALSE, FALSE, 0, 0,
&firstchar, &firstcharflags, &reqchar, &reqcharflags, NULL, cd, NULL);
re->top_bracket = cd->bracount;
re->top_backref = cd->top_backref;
re->max_lookbehind = cd->max_lookbehind;
re->flags = cd->external_flags | PCRE_MODE;
if (cd->had_accept)
{
reqchar = 0; /* Must disable after (*ACCEPT) */
reqcharflags = REQ_NONE;
}
/* If not reached end of pattern on success, there's an excess bracket. */
if (errorcode == 0 && *ptr != CHAR_NULL) errorcode = ERR22;
/* Fill in the terminating state and check for disastrous overflow, but
if debugging, leave the test till after things are printed out. */
*code++ = OP_END;
#ifndef PCRE_DEBUG
if (code - codestart > length) errorcode = ERR23;
#endif
#ifdef SUPPORT_VALGRIND
/* If the estimated length exceeds the really used length, mark the extra
allocated memory as unaddressable, so that any out-of-bound reads can be
detected. */
VALGRIND_MAKE_MEM_NOACCESS(code, (length - (code - codestart)) * sizeof(pcre_uchar));
#endif
/* Fill in any forward references that are required. There may be repeated
references; optimize for them, as searching a large regex takes time. */
if (cd->hwm > cd->start_workspace)
{
int prev_recno = -1;
const pcre_uchar *groupptr = NULL;
while (errorcode == 0 && cd->hwm > cd->start_workspace)
{
int offset, recno;
cd->hwm -= LINK_SIZE;
offset = GET(cd->hwm, 0);
/* Check that the hwm handling hasn't gone wrong. This whole area is
rewritten in PCRE2 because there are some obscure cases. */
if (offset == 0 || codestart[offset-1] != OP_RECURSE)
{
errorcode = ERR10;
break;
}
recno = GET(codestart, offset);
if (recno != prev_recno)
{
groupptr = PRIV(find_bracket)(codestart, utf, recno);
prev_recno = recno;
}
if (groupptr == NULL) errorcode = ERR53;
else PUT(((pcre_uchar *)codestart), offset, (int)(groupptr - codestart));
}
}
/* If the workspace had to be expanded, free the new memory. Set the pointer to
NULL to indicate that forward references have been filled in. */
if (cd->workspace_size > COMPILE_WORK_SIZE)
(PUBL(free))((void *)cd->start_workspace);
cd->start_workspace = NULL;
/* Give an error if there's back reference to a non-existent capturing
subpattern. */
if (errorcode == 0 && re->top_backref > re->top_bracket) errorcode = ERR15;
/* Unless disabled, check whether any single character iterators can be
auto-possessified. The function overwrites the appropriate opcode values, so
the type of the pointer must be cast. NOTE: the intermediate variable "temp" is
used in this code because at least one compiler gives a warning about loss of
"const" attribute if the cast (pcre_uchar *)codestart is used directly in the
function call. */
if (errorcode == 0 && (options & PCRE_NO_AUTO_POSSESS) == 0)
{
pcre_uchar *temp = (pcre_uchar *)codestart;
auto_possessify(temp, utf, cd);
}
/* If there were any lookbehind assertions that contained OP_RECURSE
(recursions or subroutine calls), a flag is set for them to be checked here,
because they may contain forward references. Actual recursions cannot be fixed
length, but subroutine calls can. It is done like this so that those without
OP_RECURSE that are not fixed length get a diagnosic with a useful offset. The
exceptional ones forgo this. We scan the pattern to check that they are fixed
length, and set their lengths. */
if (errorcode == 0 && cd->check_lookbehind)
{
pcre_uchar *cc = (pcre_uchar *)codestart;
/* Loop, searching for OP_REVERSE items, and process those that do not have
their length set. (Actually, it will also re-process any that have a length
of zero, but that is a pathological case, and it does no harm.) When we find
one, we temporarily terminate the branch it is in while we scan it. */
for (cc = (pcre_uchar *)PRIV(find_bracket)(codestart, utf, -1);
cc != NULL;
cc = (pcre_uchar *)PRIV(find_bracket)(cc, utf, -1))
{
if (GET(cc, 1) == 0)
{
int fixed_length;
pcre_uchar *be = cc - 1 - LINK_SIZE + GET(cc, -LINK_SIZE);
int end_op = *be;
*be = OP_END;
fixed_length = find_fixedlength(cc, (re->options & PCRE_UTF8) != 0, TRUE,
cd, NULL);
*be = end_op;
DPRINTF(("fixed length = %d\n", fixed_length));
if (fixed_length < 0)
{
errorcode = (fixed_length == -2)? ERR36 :
(fixed_length == -4)? ERR70 : ERR25;
break;
}
if (fixed_length > cd->max_lookbehind) cd->max_lookbehind = fixed_length;
PUT(cc, 1, fixed_length);
}
cc += 1 + LINK_SIZE;
}
}
/* Failed to compile, or error while post-processing */
if (errorcode != 0)
{
(PUBL(free))(re);
PCRE_EARLY_ERROR_RETURN:
*erroroffset = (int)(ptr - (const pcre_uchar *)pattern);
PCRE_EARLY_ERROR_RETURN2:
*errorptr = find_error_text(errorcode);
if (errorcodeptr != NULL) *errorcodeptr = errorcode;
return NULL;
}
/* If the anchored option was not passed, set the flag if we can determine that
the pattern is anchored by virtue of ^ characters or \A or anything else, such
as starting with non-atomic .* when DOTALL is set and there are no occurrences
of *PRUNE or *SKIP.
Otherwise, if we know what the first byte has to be, save it, because that
speeds up unanchored matches no end. If not, see if we can set the
PCRE_STARTLINE flag. This is helpful for multiline matches when all branches
start with ^. and also when all branches start with non-atomic .* for
non-DOTALL matches when *PRUNE and SKIP are not present. */
if ((re->options & PCRE_ANCHORED) == 0)
{
if (is_anchored(codestart, 0, cd, 0)) re->options |= PCRE_ANCHORED;
else
{
if (firstcharflags < 0)
firstchar = find_firstassertedchar(codestart, &firstcharflags, FALSE);
if (firstcharflags >= 0) /* Remove caseless flag for non-caseable chars */
{
#if defined COMPILE_PCRE8
re->first_char = firstchar & 0xff;
#elif defined COMPILE_PCRE16
re->first_char = firstchar & 0xffff;
#elif defined COMPILE_PCRE32
re->first_char = firstchar;
#endif
if ((firstcharflags & REQ_CASELESS) != 0)
{
#if defined SUPPORT_UCP && !(defined COMPILE_PCRE8)
/* We ignore non-ASCII first chars in 8 bit mode. */
if (utf)
{
if (re->first_char < 128)
{
if (cd->fcc[re->first_char] != re->first_char)
re->flags |= PCRE_FCH_CASELESS;
}
else if (UCD_OTHERCASE(re->first_char) != re->first_char)
re->flags |= PCRE_FCH_CASELESS;
}
else
#endif
if (MAX_255(re->first_char)
&& cd->fcc[re->first_char] != re->first_char)
re->flags |= PCRE_FCH_CASELESS;
}
re->flags |= PCRE_FIRSTSET;
}
else if (is_startline(codestart, 0, cd, 0, FALSE)) re->flags |= PCRE_STARTLINE;
}
}
/* For an anchored pattern, we use the "required byte" only if it follows a
variable length item in the regex. Remove the caseless flag for non-caseable
bytes. */
if (reqcharflags >= 0 &&
((re->options & PCRE_ANCHORED) == 0 || (reqcharflags & REQ_VARY) != 0))
{
#if defined COMPILE_PCRE8
re->req_char = reqchar & 0xff;
#elif defined COMPILE_PCRE16
re->req_char = reqchar & 0xffff;
#elif defined COMPILE_PCRE32
re->req_char = reqchar;
#endif
if ((reqcharflags & REQ_CASELESS) != 0)
{
#if defined SUPPORT_UCP && !(defined COMPILE_PCRE8)
/* We ignore non-ASCII first chars in 8 bit mode. */
if (utf)
{
if (re->req_char < 128)
{
if (cd->fcc[re->req_char] != re->req_char)
re->flags |= PCRE_RCH_CASELESS;
}
else if (UCD_OTHERCASE(re->req_char) != re->req_char)
re->flags |= PCRE_RCH_CASELESS;
}
else
#endif
if (MAX_255(re->req_char) && cd->fcc[re->req_char] != re->req_char)
re->flags |= PCRE_RCH_CASELESS;
}
re->flags |= PCRE_REQCHSET;
}
/* Print out the compiled data if debugging is enabled. This is never the
case when building a production library. */
#ifdef PCRE_DEBUG
printf("Length = %d top_bracket = %d top_backref = %d\n",
length, re->top_bracket, re->top_backref);
printf("Options=%08x\n", re->options);
if ((re->flags & PCRE_FIRSTSET) != 0)
{
pcre_uchar ch = re->first_char;
const char *caseless =
((re->flags & PCRE_FCH_CASELESS) == 0)? "" : " (caseless)";
if (PRINTABLE(ch)) printf("First char = %c%s\n", ch, caseless);
else printf("First char = \\x%02x%s\n", ch, caseless);
}
if ((re->flags & PCRE_REQCHSET) != 0)
{
pcre_uchar ch = re->req_char;
const char *caseless =
((re->flags & PCRE_RCH_CASELESS) == 0)? "" : " (caseless)";
if (PRINTABLE(ch)) printf("Req char = %c%s\n", ch, caseless);
else printf("Req char = \\x%02x%s\n", ch, caseless);
}
#if defined COMPILE_PCRE8
pcre_printint((pcre *)re, stdout, TRUE);
#elif defined COMPILE_PCRE16
pcre16_printint((pcre *)re, stdout, TRUE);
#elif defined COMPILE_PCRE32
pcre32_printint((pcre *)re, stdout, TRUE);
#endif
/* This check is done here in the debugging case so that the code that
was compiled can be seen. */
if (code - codestart > length)
{
(PUBL(free))(re);
*errorptr = find_error_text(ERR23);
*erroroffset = ptr - (pcre_uchar *)pattern;
if (errorcodeptr != NULL) *errorcodeptr = ERR23;
return NULL;
}
#endif /* PCRE_DEBUG */
/* Check for a pattern than can match an empty string, so that this information
can be provided to applications. */
do
{
if (could_be_empty_branch(codestart, code, utf, cd, NULL))
{
re->flags |= PCRE_MATCH_EMPTY;
break;
}
codestart += GET(codestart, 1);
}
while (*codestart == OP_ALT);
#if defined COMPILE_PCRE8
return (pcre *)re;
#elif defined COMPILE_PCRE16
return (pcre16 *)re;
#elif defined COMPILE_PCRE32
return (pcre32 *)re;
#endif
}
/* End of pcre_compile.c */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_tables.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2017 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
#ifndef PCRE_INCLUDED
/* This module contains some fixed tables that are used by more than one of the
PCRE code modules. The tables are also #included by the pcretest program, which
uses macros to change their names from _pcre_xxx to xxxx, thereby avoiding name
clashes with the library. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
#endif /* PCRE_INCLUDED */
/* Table of sizes for the fixed-length opcodes. It's defined in a macro so that
the definition is next to the definition of the opcodes in pcre_internal.h. */
const pcre_uint8 PRIV(OP_lengths)[] = { OP_LENGTHS };
/* Tables of horizontal and vertical whitespace characters, suitable for
adding to classes. */
const pcre_uint32 PRIV(hspace_list)[] = { HSPACE_LIST };
const pcre_uint32 PRIV(vspace_list)[] = { VSPACE_LIST };
/*************************************************
* Tables for UTF-8 support *
*************************************************/
/* These are the breakpoints for different numbers of bytes in a UTF-8
character. */
#if (defined SUPPORT_UTF && defined COMPILE_PCRE8) \
|| (defined PCRE_INCLUDED && (defined SUPPORT_PCRE16 || defined SUPPORT_PCRE32))
/* These tables are also required by pcretest in 16- or 32-bit mode. */
const int PRIV(utf8_table1)[] =
{ 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff};
const int PRIV(utf8_table1_size) = sizeof(PRIV(utf8_table1)) / sizeof(int);
/* These are the indicator bits and the mask for the data bits to set in the
first byte of a character, indexed by the number of additional bytes. */
const int PRIV(utf8_table2)[] = { 0, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc};
const int PRIV(utf8_table3)[] = { 0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01};
/* Table of the number of extra bytes, indexed by the first byte masked with
0x3f. The highest number for a valid UTF-8 first byte is in fact 0x3d. */
const pcre_uint8 PRIV(utf8_table4)[] = {
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 };
#endif /* (SUPPORT_UTF && COMPILE_PCRE8) || (PCRE_INCLUDED && SUPPORT_PCRE[16|32])*/
#ifdef SUPPORT_UTF
/* Table to translate from particular type value to the general value. */
const pcre_uint32 PRIV(ucp_gentype)[] = {
ucp_C, ucp_C, ucp_C, ucp_C, ucp_C, /* Cc, Cf, Cn, Co, Cs */
ucp_L, ucp_L, ucp_L, ucp_L, ucp_L, /* Ll, Lu, Lm, Lo, Lt */
ucp_M, ucp_M, ucp_M, /* Mc, Me, Mn */
ucp_N, ucp_N, ucp_N, /* Nd, Nl, No */
ucp_P, ucp_P, ucp_P, ucp_P, ucp_P, /* Pc, Pd, Pe, Pf, Pi */
ucp_P, ucp_P, /* Ps, Po */
ucp_S, ucp_S, ucp_S, ucp_S, /* Sc, Sk, Sm, So */
ucp_Z, ucp_Z, ucp_Z /* Zl, Zp, Zs */
};
/* This table encodes the rules for finding the end of an extended grapheme
cluster. Every code point has a grapheme break property which is one of the
ucp_gbXX values defined in ucp.h. The 2-dimensional table is indexed by the
properties of two adjacent code points. The left property selects a word from
the table, and the right property selects a bit from that word like this:
ucp_gbtable[left-property] & (1 << right-property)
The value is non-zero if a grapheme break is NOT permitted between the relevant
two code points. The breaking rules are as follows:
1. Break at the start and end of text (pretty obviously).
2. Do not break between a CR and LF; otherwise, break before and after
controls.
3. Do not break Hangul syllable sequences, the rules for which are:
L may be followed by L, V, LV or LVT
LV or V may be followed by V or T
LVT or T may be followed by T
4. Do not break before extending characters.
The next two rules are only for extended grapheme clusters (but that's what we
are implementing).
5. Do not break before SpacingMarks.
6. Do not break after Prepend characters.
7. Otherwise, break everywhere.
*/
const pcre_uint32 PRIV(ucp_gbtable[]) = {
(1<<ucp_gbLF), /* 0 CR */
0, /* 1 LF */
0, /* 2 Control */
(1<<ucp_gbExtend)|(1<<ucp_gbSpacingMark), /* 3 Extend */
(1<<ucp_gbExtend)|(1<<ucp_gbPrepend)| /* 4 Prepend */
(1<<ucp_gbSpacingMark)|(1<<ucp_gbL)|
(1<<ucp_gbV)|(1<<ucp_gbT)|(1<<ucp_gbLV)|
(1<<ucp_gbLVT)|(1<<ucp_gbOther),
(1<<ucp_gbExtend)|(1<<ucp_gbSpacingMark), /* 5 SpacingMark */
(1<<ucp_gbExtend)|(1<<ucp_gbSpacingMark)|(1<<ucp_gbL)| /* 6 L */
(1<<ucp_gbV)|(1<<ucp_gbLV)|(1<<ucp_gbLVT),
(1<<ucp_gbExtend)|(1<<ucp_gbSpacingMark)|(1<<ucp_gbV)| /* 7 V */
(1<<ucp_gbT),
(1<<ucp_gbExtend)|(1<<ucp_gbSpacingMark)|(1<<ucp_gbT), /* 8 T */
(1<<ucp_gbExtend)|(1<<ucp_gbSpacingMark)|(1<<ucp_gbV)| /* 9 LV */
(1<<ucp_gbT),
(1<<ucp_gbExtend)|(1<<ucp_gbSpacingMark)|(1<<ucp_gbT), /* 10 LVT */
(1<<ucp_gbRegionalIndicator), /* 11 RegionalIndicator */
(1<<ucp_gbExtend)|(1<<ucp_gbSpacingMark) /* 12 Other */
};
#ifdef SUPPORT_JIT
/* This table reverses PRIV(ucp_gentype). We can save the cost
of a memory load. */
const int PRIV(ucp_typerange)[] = {
ucp_Cc, ucp_Cs,
ucp_Ll, ucp_Lu,
ucp_Mc, ucp_Mn,
ucp_Nd, ucp_No,
ucp_Pc, ucp_Ps,
ucp_Sc, ucp_So,
ucp_Zl, ucp_Zs,
};
#endif /* SUPPORT_JIT */
/* The pcre_utt[] table below translates Unicode property names into type and
code values. It is searched by binary chop, so must be in collating sequence of
name. Originally, the table contained pointers to the name strings in the first
field of each entry. However, that leads to a large number of relocations when
a shared library is dynamically loaded. A significant reduction is made by
putting all the names into a single, large string and then using offsets in the
table itself. Maintenance is more error-prone, but frequent changes to this
data are unlikely.
July 2008: There is now a script called maint/GenerateUtt.py that can be used
to generate this data automatically instead of maintaining it by hand.
The script was updated in March 2009 to generate a new EBCDIC-compliant
version. Like all other character and string literals that are compared against
the regular expression pattern, we must use STR_ macros instead of literal
strings to make sure that UTF-8 support works on EBCDIC platforms. */
#define STRING_Any0 STR_A STR_n STR_y "\0"
#define STRING_Arabic0 STR_A STR_r STR_a STR_b STR_i STR_c "\0"
#define STRING_Armenian0 STR_A STR_r STR_m STR_e STR_n STR_i STR_a STR_n "\0"
#define STRING_Avestan0 STR_A STR_v STR_e STR_s STR_t STR_a STR_n "\0"
#define STRING_Balinese0 STR_B STR_a STR_l STR_i STR_n STR_e STR_s STR_e "\0"
#define STRING_Bamum0 STR_B STR_a STR_m STR_u STR_m "\0"
#define STRING_Bassa_Vah0 STR_B STR_a STR_s STR_s STR_a STR_UNDERSCORE STR_V STR_a STR_h "\0"
#define STRING_Batak0 STR_B STR_a STR_t STR_a STR_k "\0"
#define STRING_Bengali0 STR_B STR_e STR_n STR_g STR_a STR_l STR_i "\0"
#define STRING_Bopomofo0 STR_B STR_o STR_p STR_o STR_m STR_o STR_f STR_o "\0"
#define STRING_Brahmi0 STR_B STR_r STR_a STR_h STR_m STR_i "\0"
#define STRING_Braille0 STR_B STR_r STR_a STR_i STR_l STR_l STR_e "\0"
#define STRING_Buginese0 STR_B STR_u STR_g STR_i STR_n STR_e STR_s STR_e "\0"
#define STRING_Buhid0 STR_B STR_u STR_h STR_i STR_d "\0"
#define STRING_C0 STR_C "\0"
#define STRING_Canadian_Aboriginal0 STR_C STR_a STR_n STR_a STR_d STR_i STR_a STR_n STR_UNDERSCORE STR_A STR_b STR_o STR_r STR_i STR_g STR_i STR_n STR_a STR_l "\0"
#define STRING_Carian0 STR_C STR_a STR_r STR_i STR_a STR_n "\0"
#define STRING_Caucasian_Albanian0 STR_C STR_a STR_u STR_c STR_a STR_s STR_i STR_a STR_n STR_UNDERSCORE STR_A STR_l STR_b STR_a STR_n STR_i STR_a STR_n "\0"
#define STRING_Cc0 STR_C STR_c "\0"
#define STRING_Cf0 STR_C STR_f "\0"
#define STRING_Chakma0 STR_C STR_h STR_a STR_k STR_m STR_a "\0"
#define STRING_Cham0 STR_C STR_h STR_a STR_m "\0"
#define STRING_Cherokee0 STR_C STR_h STR_e STR_r STR_o STR_k STR_e STR_e "\0"
#define STRING_Cn0 STR_C STR_n "\0"
#define STRING_Co0 STR_C STR_o "\0"
#define STRING_Common0 STR_C STR_o STR_m STR_m STR_o STR_n "\0"
#define STRING_Coptic0 STR_C STR_o STR_p STR_t STR_i STR_c "\0"
#define STRING_Cs0 STR_C STR_s "\0"
#define STRING_Cuneiform0 STR_C STR_u STR_n STR_e STR_i STR_f STR_o STR_r STR_m "\0"
#define STRING_Cypriot0 STR_C STR_y STR_p STR_r STR_i STR_o STR_t "\0"
#define STRING_Cyrillic0 STR_C STR_y STR_r STR_i STR_l STR_l STR_i STR_c "\0"
#define STRING_Deseret0 STR_D STR_e STR_s STR_e STR_r STR_e STR_t "\0"
#define STRING_Devanagari0 STR_D STR_e STR_v STR_a STR_n STR_a STR_g STR_a STR_r STR_i "\0"
#define STRING_Duployan0 STR_D STR_u STR_p STR_l STR_o STR_y STR_a STR_n "\0"
#define STRING_Egyptian_Hieroglyphs0 STR_E STR_g STR_y STR_p STR_t STR_i STR_a STR_n STR_UNDERSCORE STR_H STR_i STR_e STR_r STR_o STR_g STR_l STR_y STR_p STR_h STR_s "\0"
#define STRING_Elbasan0 STR_E STR_l STR_b STR_a STR_s STR_a STR_n "\0"
#define STRING_Ethiopic0 STR_E STR_t STR_h STR_i STR_o STR_p STR_i STR_c "\0"
#define STRING_Georgian0 STR_G STR_e STR_o STR_r STR_g STR_i STR_a STR_n "\0"
#define STRING_Glagolitic0 STR_G STR_l STR_a STR_g STR_o STR_l STR_i STR_t STR_i STR_c "\0"
#define STRING_Gothic0 STR_G STR_o STR_t STR_h STR_i STR_c "\0"
#define STRING_Grantha0 STR_G STR_r STR_a STR_n STR_t STR_h STR_a "\0"
#define STRING_Greek0 STR_G STR_r STR_e STR_e STR_k "\0"
#define STRING_Gujarati0 STR_G STR_u STR_j STR_a STR_r STR_a STR_t STR_i "\0"
#define STRING_Gurmukhi0 STR_G STR_u STR_r STR_m STR_u STR_k STR_h STR_i "\0"
#define STRING_Han0 STR_H STR_a STR_n "\0"
#define STRING_Hangul0 STR_H STR_a STR_n STR_g STR_u STR_l "\0"
#define STRING_Hanunoo0 STR_H STR_a STR_n STR_u STR_n STR_o STR_o "\0"
#define STRING_Hebrew0 STR_H STR_e STR_b STR_r STR_e STR_w "\0"
#define STRING_Hiragana0 STR_H STR_i STR_r STR_a STR_g STR_a STR_n STR_a "\0"
#define STRING_Imperial_Aramaic0 STR_I STR_m STR_p STR_e STR_r STR_i STR_a STR_l STR_UNDERSCORE STR_A STR_r STR_a STR_m STR_a STR_i STR_c "\0"
#define STRING_Inherited0 STR_I STR_n STR_h STR_e STR_r STR_i STR_t STR_e STR_d "\0"
#define STRING_Inscriptional_Pahlavi0 STR_I STR_n STR_s STR_c STR_r STR_i STR_p STR_t STR_i STR_o STR_n STR_a STR_l STR_UNDERSCORE STR_P STR_a STR_h STR_l STR_a STR_v STR_i "\0"
#define STRING_Inscriptional_Parthian0 STR_I STR_n STR_s STR_c STR_r STR_i STR_p STR_t STR_i STR_o STR_n STR_a STR_l STR_UNDERSCORE STR_P STR_a STR_r STR_t STR_h STR_i STR_a STR_n "\0"
#define STRING_Javanese0 STR_J STR_a STR_v STR_a STR_n STR_e STR_s STR_e "\0"
#define STRING_Kaithi0 STR_K STR_a STR_i STR_t STR_h STR_i "\0"
#define STRING_Kannada0 STR_K STR_a STR_n STR_n STR_a STR_d STR_a "\0"
#define STRING_Katakana0 STR_K STR_a STR_t STR_a STR_k STR_a STR_n STR_a "\0"
#define STRING_Kayah_Li0 STR_K STR_a STR_y STR_a STR_h STR_UNDERSCORE STR_L STR_i "\0"
#define STRING_Kharoshthi0 STR_K STR_h STR_a STR_r STR_o STR_s STR_h STR_t STR_h STR_i "\0"
#define STRING_Khmer0 STR_K STR_h STR_m STR_e STR_r "\0"
#define STRING_Khojki0 STR_K STR_h STR_o STR_j STR_k STR_i "\0"
#define STRING_Khudawadi0 STR_K STR_h STR_u STR_d STR_a STR_w STR_a STR_d STR_i "\0"
#define STRING_L0 STR_L "\0"
#define STRING_L_AMPERSAND0 STR_L STR_AMPERSAND "\0"
#define STRING_Lao0 STR_L STR_a STR_o "\0"
#define STRING_Latin0 STR_L STR_a STR_t STR_i STR_n "\0"
#define STRING_Lepcha0 STR_L STR_e STR_p STR_c STR_h STR_a "\0"
#define STRING_Limbu0 STR_L STR_i STR_m STR_b STR_u "\0"
#define STRING_Linear_A0 STR_L STR_i STR_n STR_e STR_a STR_r STR_UNDERSCORE STR_A "\0"
#define STRING_Linear_B0 STR_L STR_i STR_n STR_e STR_a STR_r STR_UNDERSCORE STR_B "\0"
#define STRING_Lisu0 STR_L STR_i STR_s STR_u "\0"
#define STRING_Ll0 STR_L STR_l "\0"
#define STRING_Lm0 STR_L STR_m "\0"
#define STRING_Lo0 STR_L STR_o "\0"
#define STRING_Lt0 STR_L STR_t "\0"
#define STRING_Lu0 STR_L STR_u "\0"
#define STRING_Lycian0 STR_L STR_y STR_c STR_i STR_a STR_n "\0"
#define STRING_Lydian0 STR_L STR_y STR_d STR_i STR_a STR_n "\0"
#define STRING_M0 STR_M "\0"
#define STRING_Mahajani0 STR_M STR_a STR_h STR_a STR_j STR_a STR_n STR_i "\0"
#define STRING_Malayalam0 STR_M STR_a STR_l STR_a STR_y STR_a STR_l STR_a STR_m "\0"
#define STRING_Mandaic0 STR_M STR_a STR_n STR_d STR_a STR_i STR_c "\0"
#define STRING_Manichaean0 STR_M STR_a STR_n STR_i STR_c STR_h STR_a STR_e STR_a STR_n "\0"
#define STRING_Mc0 STR_M STR_c "\0"
#define STRING_Me0 STR_M STR_e "\0"
#define STRING_Meetei_Mayek0 STR_M STR_e STR_e STR_t STR_e STR_i STR_UNDERSCORE STR_M STR_a STR_y STR_e STR_k "\0"
#define STRING_Mende_Kikakui0 STR_M STR_e STR_n STR_d STR_e STR_UNDERSCORE STR_K STR_i STR_k STR_a STR_k STR_u STR_i "\0"
#define STRING_Meroitic_Cursive0 STR_M STR_e STR_r STR_o STR_i STR_t STR_i STR_c STR_UNDERSCORE STR_C STR_u STR_r STR_s STR_i STR_v STR_e "\0"
#define STRING_Meroitic_Hieroglyphs0 STR_M STR_e STR_r STR_o STR_i STR_t STR_i STR_c STR_UNDERSCORE STR_H STR_i STR_e STR_r STR_o STR_g STR_l STR_y STR_p STR_h STR_s "\0"
#define STRING_Miao0 STR_M STR_i STR_a STR_o "\0"
#define STRING_Mn0 STR_M STR_n "\0"
#define STRING_Modi0 STR_M STR_o STR_d STR_i "\0"
#define STRING_Mongolian0 STR_M STR_o STR_n STR_g STR_o STR_l STR_i STR_a STR_n "\0"
#define STRING_Mro0 STR_M STR_r STR_o "\0"
#define STRING_Myanmar0 STR_M STR_y STR_a STR_n STR_m STR_a STR_r "\0"
#define STRING_N0 STR_N "\0"
#define STRING_Nabataean0 STR_N STR_a STR_b STR_a STR_t STR_a STR_e STR_a STR_n "\0"
#define STRING_Nd0 STR_N STR_d "\0"
#define STRING_New_Tai_Lue0 STR_N STR_e STR_w STR_UNDERSCORE STR_T STR_a STR_i STR_UNDERSCORE STR_L STR_u STR_e "\0"
#define STRING_Nko0 STR_N STR_k STR_o "\0"
#define STRING_Nl0 STR_N STR_l "\0"
#define STRING_No0 STR_N STR_o "\0"
#define STRING_Ogham0 STR_O STR_g STR_h STR_a STR_m "\0"
#define STRING_Ol_Chiki0 STR_O STR_l STR_UNDERSCORE STR_C STR_h STR_i STR_k STR_i "\0"
#define STRING_Old_Italic0 STR_O STR_l STR_d STR_UNDERSCORE STR_I STR_t STR_a STR_l STR_i STR_c "\0"
#define STRING_Old_North_Arabian0 STR_O STR_l STR_d STR_UNDERSCORE STR_N STR_o STR_r STR_t STR_h STR_UNDERSCORE STR_A STR_r STR_a STR_b STR_i STR_a STR_n "\0"
#define STRING_Old_Permic0 STR_O STR_l STR_d STR_UNDERSCORE STR_P STR_e STR_r STR_m STR_i STR_c "\0"
#define STRING_Old_Persian0 STR_O STR_l STR_d STR_UNDERSCORE STR_P STR_e STR_r STR_s STR_i STR_a STR_n "\0"
#define STRING_Old_South_Arabian0 STR_O STR_l STR_d STR_UNDERSCORE STR_S STR_o STR_u STR_t STR_h STR_UNDERSCORE STR_A STR_r STR_a STR_b STR_i STR_a STR_n "\0"
#define STRING_Old_Turkic0 STR_O STR_l STR_d STR_UNDERSCORE STR_T STR_u STR_r STR_k STR_i STR_c "\0"
#define STRING_Oriya0 STR_O STR_r STR_i STR_y STR_a "\0"
#define STRING_Osmanya0 STR_O STR_s STR_m STR_a STR_n STR_y STR_a "\0"
#define STRING_P0 STR_P "\0"
#define STRING_Pahawh_Hmong0 STR_P STR_a STR_h STR_a STR_w STR_h STR_UNDERSCORE STR_H STR_m STR_o STR_n STR_g "\0"
#define STRING_Palmyrene0 STR_P STR_a STR_l STR_m STR_y STR_r STR_e STR_n STR_e "\0"
#define STRING_Pau_Cin_Hau0 STR_P STR_a STR_u STR_UNDERSCORE STR_C STR_i STR_n STR_UNDERSCORE STR_H STR_a STR_u "\0"
#define STRING_Pc0 STR_P STR_c "\0"
#define STRING_Pd0 STR_P STR_d "\0"
#define STRING_Pe0 STR_P STR_e "\0"
#define STRING_Pf0 STR_P STR_f "\0"
#define STRING_Phags_Pa0 STR_P STR_h STR_a STR_g STR_s STR_UNDERSCORE STR_P STR_a "\0"
#define STRING_Phoenician0 STR_P STR_h STR_o STR_e STR_n STR_i STR_c STR_i STR_a STR_n "\0"
#define STRING_Pi0 STR_P STR_i "\0"
#define STRING_Po0 STR_P STR_o "\0"
#define STRING_Ps0 STR_P STR_s "\0"
#define STRING_Psalter_Pahlavi0 STR_P STR_s STR_a STR_l STR_t STR_e STR_r STR_UNDERSCORE STR_P STR_a STR_h STR_l STR_a STR_v STR_i "\0"
#define STRING_Rejang0 STR_R STR_e STR_j STR_a STR_n STR_g "\0"
#define STRING_Runic0 STR_R STR_u STR_n STR_i STR_c "\0"
#define STRING_S0 STR_S "\0"
#define STRING_Samaritan0 STR_S STR_a STR_m STR_a STR_r STR_i STR_t STR_a STR_n "\0"
#define STRING_Saurashtra0 STR_S STR_a STR_u STR_r STR_a STR_s STR_h STR_t STR_r STR_a "\0"
#define STRING_Sc0 STR_S STR_c "\0"
#define STRING_Sharada0 STR_S STR_h STR_a STR_r STR_a STR_d STR_a "\0"
#define STRING_Shavian0 STR_S STR_h STR_a STR_v STR_i STR_a STR_n "\0"
#define STRING_Siddham0 STR_S STR_i STR_d STR_d STR_h STR_a STR_m "\0"
#define STRING_Sinhala0 STR_S STR_i STR_n STR_h STR_a STR_l STR_a "\0"
#define STRING_Sk0 STR_S STR_k "\0"
#define STRING_Sm0 STR_S STR_m "\0"
#define STRING_So0 STR_S STR_o "\0"
#define STRING_Sora_Sompeng0 STR_S STR_o STR_r STR_a STR_UNDERSCORE STR_S STR_o STR_m STR_p STR_e STR_n STR_g "\0"
#define STRING_Sundanese0 STR_S STR_u STR_n STR_d STR_a STR_n STR_e STR_s STR_e "\0"
#define STRING_Syloti_Nagri0 STR_S STR_y STR_l STR_o STR_t STR_i STR_UNDERSCORE STR_N STR_a STR_g STR_r STR_i "\0"
#define STRING_Syriac0 STR_S STR_y STR_r STR_i STR_a STR_c "\0"
#define STRING_Tagalog0 STR_T STR_a STR_g STR_a STR_l STR_o STR_g "\0"
#define STRING_Tagbanwa0 STR_T STR_a STR_g STR_b STR_a STR_n STR_w STR_a "\0"
#define STRING_Tai_Le0 STR_T STR_a STR_i STR_UNDERSCORE STR_L STR_e "\0"
#define STRING_Tai_Tham0 STR_T STR_a STR_i STR_UNDERSCORE STR_T STR_h STR_a STR_m "\0"
#define STRING_Tai_Viet0 STR_T STR_a STR_i STR_UNDERSCORE STR_V STR_i STR_e STR_t "\0"
#define STRING_Takri0 STR_T STR_a STR_k STR_r STR_i "\0"
#define STRING_Tamil0 STR_T STR_a STR_m STR_i STR_l "\0"
#define STRING_Telugu0 STR_T STR_e STR_l STR_u STR_g STR_u "\0"
#define STRING_Thaana0 STR_T STR_h STR_a STR_a STR_n STR_a "\0"
#define STRING_Thai0 STR_T STR_h STR_a STR_i "\0"
#define STRING_Tibetan0 STR_T STR_i STR_b STR_e STR_t STR_a STR_n "\0"
#define STRING_Tifinagh0 STR_T STR_i STR_f STR_i STR_n STR_a STR_g STR_h "\0"
#define STRING_Tirhuta0 STR_T STR_i STR_r STR_h STR_u STR_t STR_a "\0"
#define STRING_Ugaritic0 STR_U STR_g STR_a STR_r STR_i STR_t STR_i STR_c "\0"
#define STRING_Vai0 STR_V STR_a STR_i "\0"
#define STRING_Warang_Citi0 STR_W STR_a STR_r STR_a STR_n STR_g STR_UNDERSCORE STR_C STR_i STR_t STR_i "\0"
#define STRING_Xan0 STR_X STR_a STR_n "\0"
#define STRING_Xps0 STR_X STR_p STR_s "\0"
#define STRING_Xsp0 STR_X STR_s STR_p "\0"
#define STRING_Xuc0 STR_X STR_u STR_c "\0"
#define STRING_Xwd0 STR_X STR_w STR_d "\0"
#define STRING_Yi0 STR_Y STR_i "\0"
#define STRING_Z0 STR_Z "\0"
#define STRING_Zl0 STR_Z STR_l "\0"
#define STRING_Zp0 STR_Z STR_p "\0"
#define STRING_Zs0 STR_Z STR_s "\0"
const char PRIV(utt_names)[] =
STRING_Any0
STRING_Arabic0
STRING_Armenian0
STRING_Avestan0
STRING_Balinese0
STRING_Bamum0
STRING_Bassa_Vah0
STRING_Batak0
STRING_Bengali0
STRING_Bopomofo0
STRING_Brahmi0
STRING_Braille0
STRING_Buginese0
STRING_Buhid0
STRING_C0
STRING_Canadian_Aboriginal0
STRING_Carian0
STRING_Caucasian_Albanian0
STRING_Cc0
STRING_Cf0
STRING_Chakma0
STRING_Cham0
STRING_Cherokee0
STRING_Cn0
STRING_Co0
STRING_Common0
STRING_Coptic0
STRING_Cs0
STRING_Cuneiform0
STRING_Cypriot0
STRING_Cyrillic0
STRING_Deseret0
STRING_Devanagari0
STRING_Duployan0
STRING_Egyptian_Hieroglyphs0
STRING_Elbasan0
STRING_Ethiopic0
STRING_Georgian0
STRING_Glagolitic0
STRING_Gothic0
STRING_Grantha0
STRING_Greek0
STRING_Gujarati0
STRING_Gurmukhi0
STRING_Han0
STRING_Hangul0
STRING_Hanunoo0
STRING_Hebrew0
STRING_Hiragana0
STRING_Imperial_Aramaic0
STRING_Inherited0
STRING_Inscriptional_Pahlavi0
STRING_Inscriptional_Parthian0
STRING_Javanese0
STRING_Kaithi0
STRING_Kannada0
STRING_Katakana0
STRING_Kayah_Li0
STRING_Kharoshthi0
STRING_Khmer0
STRING_Khojki0
STRING_Khudawadi0
STRING_L0
STRING_L_AMPERSAND0
STRING_Lao0
STRING_Latin0
STRING_Lepcha0
STRING_Limbu0
STRING_Linear_A0
STRING_Linear_B0
STRING_Lisu0
STRING_Ll0
STRING_Lm0
STRING_Lo0
STRING_Lt0
STRING_Lu0
STRING_Lycian0
STRING_Lydian0
STRING_M0
STRING_Mahajani0
STRING_Malayalam0
STRING_Mandaic0
STRING_Manichaean0
STRING_Mc0
STRING_Me0
STRING_Meetei_Mayek0
STRING_Mende_Kikakui0
STRING_Meroitic_Cursive0
STRING_Meroitic_Hieroglyphs0
STRING_Miao0
STRING_Mn0
STRING_Modi0
STRING_Mongolian0
STRING_Mro0
STRING_Myanmar0
STRING_N0
STRING_Nabataean0
STRING_Nd0
STRING_New_Tai_Lue0
STRING_Nko0
STRING_Nl0
STRING_No0
STRING_Ogham0
STRING_Ol_Chiki0
STRING_Old_Italic0
STRING_Old_North_Arabian0
STRING_Old_Permic0
STRING_Old_Persian0
STRING_Old_South_Arabian0
STRING_Old_Turkic0
STRING_Oriya0
STRING_Osmanya0
STRING_P0
STRING_Pahawh_Hmong0
STRING_Palmyrene0
STRING_Pau_Cin_Hau0
STRING_Pc0
STRING_Pd0
STRING_Pe0
STRING_Pf0
STRING_Phags_Pa0
STRING_Phoenician0
STRING_Pi0
STRING_Po0
STRING_Ps0
STRING_Psalter_Pahlavi0
STRING_Rejang0
STRING_Runic0
STRING_S0
STRING_Samaritan0
STRING_Saurashtra0
STRING_Sc0
STRING_Sharada0
STRING_Shavian0
STRING_Siddham0
STRING_Sinhala0
STRING_Sk0
STRING_Sm0
STRING_So0
STRING_Sora_Sompeng0
STRING_Sundanese0
STRING_Syloti_Nagri0
STRING_Syriac0
STRING_Tagalog0
STRING_Tagbanwa0
STRING_Tai_Le0
STRING_Tai_Tham0
STRING_Tai_Viet0
STRING_Takri0
STRING_Tamil0
STRING_Telugu0
STRING_Thaana0
STRING_Thai0
STRING_Tibetan0
STRING_Tifinagh0
STRING_Tirhuta0
STRING_Ugaritic0
STRING_Vai0
STRING_Warang_Citi0
STRING_Xan0
STRING_Xps0
STRING_Xsp0
STRING_Xuc0
STRING_Xwd0
STRING_Yi0
STRING_Z0
STRING_Zl0
STRING_Zp0
STRING_Zs0;
const ucp_type_table PRIV(utt)[] = {
{ 0, PT_ANY, 0 },
{ 4, PT_SC, ucp_Arabic },
{ 11, PT_SC, ucp_Armenian },
{ 20, PT_SC, ucp_Avestan },
{ 28, PT_SC, ucp_Balinese },
{ 37, PT_SC, ucp_Bamum },
{ 43, PT_SC, ucp_Bassa_Vah },
{ 53, PT_SC, ucp_Batak },
{ 59, PT_SC, ucp_Bengali },
{ 67, PT_SC, ucp_Bopomofo },
{ 76, PT_SC, ucp_Brahmi },
{ 83, PT_SC, ucp_Braille },
{ 91, PT_SC, ucp_Buginese },
{ 100, PT_SC, ucp_Buhid },
{ 106, PT_GC, ucp_C },
{ 108, PT_SC, ucp_Canadian_Aboriginal },
{ 128, PT_SC, ucp_Carian },
{ 135, PT_SC, ucp_Caucasian_Albanian },
{ 154, PT_PC, ucp_Cc },
{ 157, PT_PC, ucp_Cf },
{ 160, PT_SC, ucp_Chakma },
{ 167, PT_SC, ucp_Cham },
{ 172, PT_SC, ucp_Cherokee },
{ 181, PT_PC, ucp_Cn },
{ 184, PT_PC, ucp_Co },
{ 187, PT_SC, ucp_Common },
{ 194, PT_SC, ucp_Coptic },
{ 201, PT_PC, ucp_Cs },
{ 204, PT_SC, ucp_Cuneiform },
{ 214, PT_SC, ucp_Cypriot },
{ 222, PT_SC, ucp_Cyrillic },
{ 231, PT_SC, ucp_Deseret },
{ 239, PT_SC, ucp_Devanagari },
{ 250, PT_SC, ucp_Duployan },
{ 259, PT_SC, ucp_Egyptian_Hieroglyphs },
{ 280, PT_SC, ucp_Elbasan },
{ 288, PT_SC, ucp_Ethiopic },
{ 297, PT_SC, ucp_Georgian },
{ 306, PT_SC, ucp_Glagolitic },
{ 317, PT_SC, ucp_Gothic },
{ 324, PT_SC, ucp_Grantha },
{ 332, PT_SC, ucp_Greek },
{ 338, PT_SC, ucp_Gujarati },
{ 347, PT_SC, ucp_Gurmukhi },
{ 356, PT_SC, ucp_Han },
{ 360, PT_SC, ucp_Hangul },
{ 367, PT_SC, ucp_Hanunoo },
{ 375, PT_SC, ucp_Hebrew },
{ 382, PT_SC, ucp_Hiragana },
{ 391, PT_SC, ucp_Imperial_Aramaic },
{ 408, PT_SC, ucp_Inherited },
{ 418, PT_SC, ucp_Inscriptional_Pahlavi },
{ 440, PT_SC, ucp_Inscriptional_Parthian },
{ 463, PT_SC, ucp_Javanese },
{ 472, PT_SC, ucp_Kaithi },
{ 479, PT_SC, ucp_Kannada },
{ 487, PT_SC, ucp_Katakana },
{ 496, PT_SC, ucp_Kayah_Li },
{ 505, PT_SC, ucp_Kharoshthi },
{ 516, PT_SC, ucp_Khmer },
{ 522, PT_SC, ucp_Khojki },
{ 529, PT_SC, ucp_Khudawadi },
{ 539, PT_GC, ucp_L },
{ 541, PT_LAMP, 0 },
{ 544, PT_SC, ucp_Lao },
{ 548, PT_SC, ucp_Latin },
{ 554, PT_SC, ucp_Lepcha },
{ 561, PT_SC, ucp_Limbu },
{ 567, PT_SC, ucp_Linear_A },
{ 576, PT_SC, ucp_Linear_B },
{ 585, PT_SC, ucp_Lisu },
{ 590, PT_PC, ucp_Ll },
{ 593, PT_PC, ucp_Lm },
{ 596, PT_PC, ucp_Lo },
{ 599, PT_PC, ucp_Lt },
{ 602, PT_PC, ucp_Lu },
{ 605, PT_SC, ucp_Lycian },
{ 612, PT_SC, ucp_Lydian },
{ 619, PT_GC, ucp_M },
{ 621, PT_SC, ucp_Mahajani },
{ 630, PT_SC, ucp_Malayalam },
{ 640, PT_SC, ucp_Mandaic },
{ 648, PT_SC, ucp_Manichaean },
{ 659, PT_PC, ucp_Mc },
{ 662, PT_PC, ucp_Me },
{ 665, PT_SC, ucp_Meetei_Mayek },
{ 678, PT_SC, ucp_Mende_Kikakui },
{ 692, PT_SC, ucp_Meroitic_Cursive },
{ 709, PT_SC, ucp_Meroitic_Hieroglyphs },
{ 730, PT_SC, ucp_Miao },
{ 735, PT_PC, ucp_Mn },
{ 738, PT_SC, ucp_Modi },
{ 743, PT_SC, ucp_Mongolian },
{ 753, PT_SC, ucp_Mro },
{ 757, PT_SC, ucp_Myanmar },
{ 765, PT_GC, ucp_N },
{ 767, PT_SC, ucp_Nabataean },
{ 777, PT_PC, ucp_Nd },
{ 780, PT_SC, ucp_New_Tai_Lue },
{ 792, PT_SC, ucp_Nko },
{ 796, PT_PC, ucp_Nl },
{ 799, PT_PC, ucp_No },
{ 802, PT_SC, ucp_Ogham },
{ 808, PT_SC, ucp_Ol_Chiki },
{ 817, PT_SC, ucp_Old_Italic },
{ 828, PT_SC, ucp_Old_North_Arabian },
{ 846, PT_SC, ucp_Old_Permic },
{ 857, PT_SC, ucp_Old_Persian },
{ 869, PT_SC, ucp_Old_South_Arabian },
{ 887, PT_SC, ucp_Old_Turkic },
{ 898, PT_SC, ucp_Oriya },
{ 904, PT_SC, ucp_Osmanya },
{ 912, PT_GC, ucp_P },
{ 914, PT_SC, ucp_Pahawh_Hmong },
{ 927, PT_SC, ucp_Palmyrene },
{ 937, PT_SC, ucp_Pau_Cin_Hau },
{ 949, PT_PC, ucp_Pc },
{ 952, PT_PC, ucp_Pd },
{ 955, PT_PC, ucp_Pe },
{ 958, PT_PC, ucp_Pf },
{ 961, PT_SC, ucp_Phags_Pa },
{ 970, PT_SC, ucp_Phoenician },
{ 981, PT_PC, ucp_Pi },
{ 984, PT_PC, ucp_Po },
{ 987, PT_PC, ucp_Ps },
{ 990, PT_SC, ucp_Psalter_Pahlavi },
{ 1006, PT_SC, ucp_Rejang },
{ 1013, PT_SC, ucp_Runic },
{ 1019, PT_GC, ucp_S },
{ 1021, PT_SC, ucp_Samaritan },
{ 1031, PT_SC, ucp_Saurashtra },
{ 1042, PT_PC, ucp_Sc },
{ 1045, PT_SC, ucp_Sharada },
{ 1053, PT_SC, ucp_Shavian },
{ 1061, PT_SC, ucp_Siddham },
{ 1069, PT_SC, ucp_Sinhala },
{ 1077, PT_PC, ucp_Sk },
{ 1080, PT_PC, ucp_Sm },
{ 1083, PT_PC, ucp_So },
{ 1086, PT_SC, ucp_Sora_Sompeng },
{ 1099, PT_SC, ucp_Sundanese },
{ 1109, PT_SC, ucp_Syloti_Nagri },
{ 1122, PT_SC, ucp_Syriac },
{ 1129, PT_SC, ucp_Tagalog },
{ 1137, PT_SC, ucp_Tagbanwa },
{ 1146, PT_SC, ucp_Tai_Le },
{ 1153, PT_SC, ucp_Tai_Tham },
{ 1162, PT_SC, ucp_Tai_Viet },
{ 1171, PT_SC, ucp_Takri },
{ 1177, PT_SC, ucp_Tamil },
{ 1183, PT_SC, ucp_Telugu },
{ 1190, PT_SC, ucp_Thaana },
{ 1197, PT_SC, ucp_Thai },
{ 1202, PT_SC, ucp_Tibetan },
{ 1210, PT_SC, ucp_Tifinagh },
{ 1219, PT_SC, ucp_Tirhuta },
{ 1227, PT_SC, ucp_Ugaritic },
{ 1236, PT_SC, ucp_Vai },
{ 1240, PT_SC, ucp_Warang_Citi },
{ 1252, PT_ALNUM, 0 },
{ 1256, PT_PXSPACE, 0 },
{ 1260, PT_SPACE, 0 },
{ 1264, PT_UCNC, 0 },
{ 1268, PT_WORD, 0 },
{ 1272, PT_SC, ucp_Yi },
{ 1275, PT_GC, ucp_Z },
{ 1277, PT_PC, ucp_Zl },
{ 1280, PT_PC, ucp_Zp },
{ 1283, PT_PC, ucp_Zs }
};
const int PRIV(utt_size) = sizeof(PRIV(utt)) / sizeof(ucp_type_table);
#endif /* SUPPORT_UTF */
/* End of pcre_tables.c */
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/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2012 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains the external function pcre_refcount(), which is an
auxiliary function that can be used to maintain a reference count in a compiled
pattern data block. This might be helpful in applications where the block is
shared by different users. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
/*************************************************
* Maintain reference count *
*************************************************/
/* The reference count is a 16-bit field, initialized to zero. It is not
possible to transfer a non-zero count from one host to a different host that
has a different byte order - though I can't see why anyone in their right mind
would ever want to do that!
Arguments:
argument_re points to compiled code
adjust value to add to the count
Returns: the (possibly updated) count value (a non-negative number), or
a negative error number
*/
#if defined COMPILE_PCRE8
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre_refcount(pcre *argument_re, int adjust)
#elif defined COMPILE_PCRE16
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre16_refcount(pcre16 *argument_re, int adjust)
#elif defined COMPILE_PCRE32
PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
pcre32_refcount(pcre32 *argument_re, int adjust)
#endif
{
REAL_PCRE *re = (REAL_PCRE *)argument_re;
if (re == NULL) return PCRE_ERROR_NULL;
if (re->magic_number != MAGIC_NUMBER) return PCRE_ERROR_BADMAGIC;
if ((re->flags & PCRE_MODE) == 0) return PCRE_ERROR_BADMODE;
re->ref_count = (-adjust > re->ref_count)? 0 :
(adjust + re->ref_count > 65535)? 65535 :
re->ref_count + adjust;
return re->ref_count;
}
/* End of pcre_refcount.c */
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcreposix.h
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/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
#ifndef _PCREPOSIX_H
#define _PCREPOSIX_H
/* This is the header for the POSIX wrapper interface to the PCRE Perl-
Compatible Regular Expression library. It defines the things POSIX says should
be there. I hope.
Copyright (c) 1997-2012 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* Have to include stdlib.h in order to ensure that size_t is defined. */
#include <stdlib.h>
#define PCREPOSIX_EXP_DEFN extern
#define PCREPOSIX_EXP_DECL extern
/* Options, mostly defined by POSIX, but with some extras. */
#define PCRE_REG_ICASE 0x0001 /* Maps to PCRE_CASELESS */
#define PCRE_REG_NEWLINE 0x0002 /* Maps to PCRE_MULTILINE */
#define PCRE_REG_NOTBOL 0x0004 /* Maps to PCRE_NOTBOL */
#define PCRE_REG_NOTEOL 0x0008 /* Maps to PCRE_NOTEOL */
#define PCRE_REG_DOTALL 0x0010 /* NOT defined by POSIX; maps to PCRE_DOTALL */
#define PCRE_REG_NOSUB 0x0020 /* Maps to PCRE_NO_AUTO_CAPTURE */
#define PCRE_REG_UTF8 0x0040 /* NOT defined by POSIX; maps to PCRE_UTF8 */
#define PCRE_REG_STARTEND 0x0080 /* BSD feature: pass subject string by so,eo */
#define PCRE_REG_NOTEMPTY 0x0100 /* NOT defined by POSIX; maps to PCRE_NOTEMPTY */
#define PCRE_REG_UNGREEDY 0x0200 /* NOT defined by POSIX; maps to PCRE_UNGREEDY */
#define PCRE_REG_UCP 0x0400 /* NOT defined by POSIX; maps to PCRE_UCP */
/* This is not used by PCRE, but by defining it we make it easier
to slot PCRE into existing programs that make POSIX calls. */
#define PCRE_REG_EXTENDED 0
/* Error values. Not all these are relevant or used by the wrapper. */
enum {
PCRE_REG_ASSERT = 1, /* internal error ? */
PCRE_REG_BADBR, /* invalid repeat counts in {} */
PCRE_REG_BADPAT, /* pattern error */
PCRE_REG_BADRPT, /* ? * + invalid */
PCRE_REG_EBRACE, /* unbalanced {} */
PCRE_REG_EBRACK, /* unbalanced [] */
PCRE_REG_ECOLLATE, /* collation error - not relevant */
PCRE_REG_ECTYPE, /* bad class */
PCRE_REG_EESCAPE, /* bad escape sequence */
PCRE_REG_EMPTY, /* empty expression */
PCRE_REG_EPAREN, /* unbalanced () */
PCRE_REG_ERANGE, /* bad range inside [] */
PCRE_REG_ESIZE, /* expression too big */
PCRE_REG_ESPACE, /* failed to get memory */
PCRE_REG_ESUBREG, /* bad back reference */
PCRE_REG_INVARG, /* bad argument */
PCRE_REG_NOMATCH /* match failed */
};
/* The structure representing a compiled regular expression. */
typedef struct {
void *re_pcre;
size_t re_nsub;
size_t re_erroffset;
} pcre_regex_t;
/* The structure in which a captured offset is returned. */
typedef int pcre_regoff_t;
typedef struct {
pcre_regoff_t rm_so;
pcre_regoff_t rm_eo;
} pcre_regmatch_t;
/* The functions */
PCREPOSIX_EXP_DECL int pcre_regcomp(pcre_regex_t *, const char *, int);
PCREPOSIX_EXP_DECL int pcre_regexec(const pcre_regex_t *, const char *, size_t,
pcre_regmatch_t *, int);
PCREPOSIX_EXP_DECL size_t pcre_regerror(int, const pcre_regex_t *, char *, size_t);
PCREPOSIX_EXP_DECL void pcre_regfree(pcre_regex_t *);
#endif /* End of pcreposix.h */
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|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2014 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains internal functions for comparing and finding the length
of strings for different data item sizes. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
#ifndef COMPILE_PCRE8
/*************************************************
* Compare string utilities *
*************************************************/
/* The following two functions compares two strings. Basically a strcmp
for non 8 bit characters.
Arguments:
str1 first string
str2 second string
Returns: 0 if both string are equal (like strcmp), 1 otherwise
*/
int
PRIV(strcmp_uc_uc)(const pcre_uchar *str1, const pcre_uchar *str2)
{
pcre_uchar c1;
pcre_uchar c2;
while (*str1 != '\0' || *str2 != '\0')
{
c1 = *str1++;
c2 = *str2++;
if (c1 != c2)
return ((c1 > c2) << 1) - 1;
}
/* Both length and characters must be equal. */
return 0;
}
#ifdef COMPILE_PCRE32
int
PRIV(strcmp_uc_uc_utf)(const pcre_uchar *str1, const pcre_uchar *str2)
{
pcre_uchar c1;
pcre_uchar c2;
while (*str1 != '\0' || *str2 != '\0')
{
c1 = UCHAR21INC(str1);
c2 = UCHAR21INC(str2);
if (c1 != c2)
return ((c1 > c2) << 1) - 1;
}
/* Both length and characters must be equal. */
return 0;
}
#endif /* COMPILE_PCRE32 */
int
PRIV(strcmp_uc_c8)(const pcre_uchar *str1, const char *str2)
{
const pcre_uint8 *ustr2 = (pcre_uint8 *)str2;
pcre_uchar c1;
pcre_uchar c2;
while (*str1 != '\0' || *ustr2 != '\0')
{
c1 = *str1++;
c2 = (pcre_uchar)*ustr2++;
if (c1 != c2)
return ((c1 > c2) << 1) - 1;
}
/* Both length and characters must be equal. */
return 0;
}
#ifdef COMPILE_PCRE32
int
PRIV(strcmp_uc_c8_utf)(const pcre_uchar *str1, const char *str2)
{
const pcre_uint8 *ustr2 = (pcre_uint8 *)str2;
pcre_uchar c1;
pcre_uchar c2;
while (*str1 != '\0' || *ustr2 != '\0')
{
c1 = UCHAR21INC(str1);
c2 = (pcre_uchar)*ustr2++;
if (c1 != c2)
return ((c1 > c2) << 1) - 1;
}
/* Both length and characters must be equal. */
return 0;
}
#endif /* COMPILE_PCRE32 */
/* The following two functions compares two, fixed length
strings. Basically an strncmp for non 8 bit characters.
Arguments:
str1 first string
str2 second string
num size of the string
Returns: 0 if both string are equal (like strcmp), 1 otherwise
*/
int
PRIV(strncmp_uc_uc)(const pcre_uchar *str1, const pcre_uchar *str2, unsigned int num)
{
pcre_uchar c1;
pcre_uchar c2;
while (num-- > 0)
{
c1 = *str1++;
c2 = *str2++;
if (c1 != c2)
return ((c1 > c2) << 1) - 1;
}
/* Both length and characters must be equal. */
return 0;
}
int
PRIV(strncmp_uc_c8)(const pcre_uchar *str1, const char *str2, unsigned int num)
{
const pcre_uint8 *ustr2 = (pcre_uint8 *)str2;
pcre_uchar c1;
pcre_uchar c2;
while (num-- > 0)
{
c1 = *str1++;
c2 = (pcre_uchar)*ustr2++;
if (c1 != c2)
return ((c1 > c2) << 1) - 1;
}
/* Both length and characters must be equal. */
return 0;
}
/* The following function returns with the length of
a zero terminated string. Basically an strlen for non 8 bit characters.
Arguments:
str string
Returns: length of the string
*/
unsigned int
PRIV(strlen_uc)(const pcre_uchar *str)
{
unsigned int len = 0;
while (*str++ != 0)
len++;
return len;
}
#endif /* !COMPILE_PCRE8 */
/* End of pcre_string_utils.c */
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/pcre_xclass.c
|
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2013 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This module contains an internal function that is used to match an extended
class. It is used by both pcre_exec() and pcre_def_exec(). */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "pcre_internal.h"
/*************************************************
* Match character against an XCLASS *
*************************************************/
/* This function is called to match a character against an extended class that
might contain values > 255 and/or Unicode properties.
Arguments:
c the character
data points to the flag byte of the XCLASS data
Returns: TRUE if character matches, else FALSE
*/
BOOL
PRIV(xclass)(pcre_uint32 c, const pcre_uchar *data, BOOL utf)
{
pcre_uchar t;
BOOL negated = (*data & XCL_NOT) != 0;
(void)utf;
#ifdef COMPILE_PCRE8
/* In 8 bit mode, this must always be TRUE. Help the compiler to know that. */
utf = TRUE;
#endif
/* Character values < 256 are matched against a bitmap, if one is present. If
not, we still carry on, because there may be ranges that start below 256 in the
additional data. */
if (c < 256)
{
if ((*data & XCL_HASPROP) == 0)
{
if ((*data & XCL_MAP) == 0) return negated;
return (((pcre_uint8 *)(data + 1))[c/8] & (1 << (c&7))) != 0;
}
if ((*data & XCL_MAP) != 0 &&
(((pcre_uint8 *)(data + 1))[c/8] & (1 << (c&7))) != 0)
return !negated; /* char found */
}
/* First skip the bit map if present. Then match against the list of Unicode
properties or large chars or ranges that end with a large char. We won't ever
encounter XCL_PROP or XCL_NOTPROP when UCP support is not compiled. */
if ((*data++ & XCL_MAP) != 0) data += 32 / sizeof(pcre_uchar);
while ((t = *data++) != XCL_END)
{
pcre_uint32 x, y;
if (t == XCL_SINGLE)
{
#ifdef SUPPORT_UTF
if (utf)
{
GETCHARINC(x, data); /* macro generates multiple statements */
}
else
#endif
x = *data++;
if (c == x) return !negated;
}
else if (t == XCL_RANGE)
{
#ifdef SUPPORT_UTF
if (utf)
{
GETCHARINC(x, data); /* macro generates multiple statements */
GETCHARINC(y, data); /* macro generates multiple statements */
}
else
#endif
{
x = *data++;
y = *data++;
}
if (c >= x && c <= y) return !negated;
}
#ifdef SUPPORT_UCP
else /* XCL_PROP & XCL_NOTPROP */
{
const ucd_record *prop = GET_UCD(c);
BOOL isprop = t == XCL_PROP;
switch(*data)
{
case PT_ANY:
if (isprop) return !negated;
break;
case PT_LAMP:
if ((prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
prop->chartype == ucp_Lt) == isprop) return !negated;
break;
case PT_GC:
if ((data[1] == PRIV(ucp_gentype)[prop->chartype]) == isprop)
return !negated;
break;
case PT_PC:
if ((data[1] == prop->chartype) == isprop) return !negated;
break;
case PT_SC:
if ((data[1] == prop->script) == isprop) return !negated;
break;
case PT_ALNUM:
if ((PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N) == isprop)
return !negated;
break;
/* Perl space used to exclude VT, but from Perl 5.18 it is included,
which means that Perl space and POSIX space are now identical. PCRE
was changed at release 8.34. */
case PT_SPACE: /* Perl space */
case PT_PXSPACE: /* POSIX space */
switch(c)
{
HSPACE_CASES:
VSPACE_CASES:
if (isprop) return !negated;
break;
default:
if ((PRIV(ucp_gentype)[prop->chartype] == ucp_Z) == isprop)
return !negated;
break;
}
break;
case PT_WORD:
if ((PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
PRIV(ucp_gentype)[prop->chartype] == ucp_N || c == CHAR_UNDERSCORE)
== isprop)
return !negated;
break;
case PT_UCNC:
if (c < 0xa0)
{
if ((c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
c == CHAR_GRAVE_ACCENT) == isprop)
return !negated;
}
else
{
if ((c < 0xd800 || c > 0xdfff) == isprop)
return !negated;
}
break;
/* The following three properties can occur only in an XCLASS, as there
is no \p or \P coding for them. */
/* Graphic character. Implement this as not Z (space or separator) and
not C (other), except for Cf (format) with a few exceptions. This seems
to be what Perl does. The exceptional characters are:
U+061C Arabic Letter Mark
U+180E Mongolian Vowel Separator
U+2066 - U+2069 Various "isolate"s
*/
case PT_PXGRAPH:
if ((PRIV(ucp_gentype)[prop->chartype] != ucp_Z &&
(PRIV(ucp_gentype)[prop->chartype] != ucp_C ||
(prop->chartype == ucp_Cf &&
c != 0x061c && c != 0x180e && (c < 0x2066 || c > 0x2069))
)) == isprop)
return !negated;
break;
/* Printable character: same as graphic, with the addition of Zs, i.e.
not Zl and not Zp, and U+180E. */
case PT_PXPRINT:
if ((prop->chartype != ucp_Zl &&
prop->chartype != ucp_Zp &&
(PRIV(ucp_gentype)[prop->chartype] != ucp_C ||
(prop->chartype == ucp_Cf &&
c != 0x061c && (c < 0x2066 || c > 0x2069))
)) == isprop)
return !negated;
break;
/* Punctuation: all Unicode punctuation, plus ASCII characters that
Unicode treats as symbols rather than punctuation, for Perl
compatibility (these are $+<=>^`|~). */
case PT_PXPUNCT:
if ((PRIV(ucp_gentype)[prop->chartype] == ucp_P ||
(c < 128 && PRIV(ucp_gentype)[prop->chartype] == ucp_S)) == isprop)
return !negated;
break;
/* This should never occur, but compilers may mutter if there is no
default. */
default:
return FALSE;
}
data += 2;
}
#endif /* SUPPORT_UCP */
}
return negated; /* char did not match */
}
/* End of pcre_xclass.c */
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/cmake/FindPackageHandleStandardArgs.cmake
|
# FIND_PACKAGE_HANDLE_STANDARD_ARGS(NAME (DEFAULT_MSG|"Custom failure message") VAR1 ... )
# This macro is intended to be used in FindXXX.cmake modules files.
# It handles the REQUIRED and QUIET argument to FIND_PACKAGE() and
# it also sets the <UPPERCASED_NAME>_FOUND variable.
# The package is found if all variables listed are TRUE.
# Example:
#
# FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibXml2 DEFAULT_MSG LIBXML2_LIBRARIES LIBXML2_INCLUDE_DIR)
#
# LibXml2 is considered to be found, if both LIBXML2_LIBRARIES and
# LIBXML2_INCLUDE_DIR are valid. Then also LIBXML2_FOUND is set to TRUE.
# If it is not found and REQUIRED was used, it fails with FATAL_ERROR,
# independent whether QUIET was used or not.
# If it is found, the location is reported using the VAR1 argument, so
# here a message "Found LibXml2: /usr/lib/libxml2.so" will be printed out.
# If the second argument is DEFAULT_MSG, the message in the failure case will
# be "Could NOT find LibXml2", if you don't like this message you can specify
# your own custom failure message there.
MACRO(FIND_PACKAGE_HANDLE_STANDARD_ARGS _NAME _FAIL_MSG _VAR1 )
IF("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
IF (${_NAME}_FIND_REQUIRED)
SET(_FAIL_MESSAGE "Could not find REQUIRED package ${_NAME}")
ELSE (${_NAME}_FIND_REQUIRED)
SET(_FAIL_MESSAGE "Could not find OPTIONAL package ${_NAME}")
ENDIF (${_NAME}_FIND_REQUIRED)
ELSE("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
SET(_FAIL_MESSAGE "${_FAIL_MSG}")
ENDIF("${_FAIL_MSG}" STREQUAL "DEFAULT_MSG")
STRING(TOUPPER ${_NAME} _NAME_UPPER)
SET(${_NAME_UPPER}_FOUND TRUE)
IF(NOT ${_VAR1})
SET(${_NAME_UPPER}_FOUND FALSE)
ENDIF(NOT ${_VAR1})
FOREACH(_CURRENT_VAR ${ARGN})
IF(NOT ${_CURRENT_VAR})
SET(${_NAME_UPPER}_FOUND FALSE)
ENDIF(NOT ${_CURRENT_VAR})
ENDFOREACH(_CURRENT_VAR)
IF (${_NAME_UPPER}_FOUND)
IF (NOT ${_NAME}_FIND_QUIETLY)
MESSAGE(STATUS "Found ${_NAME}: ${${_VAR1}}")
ENDIF (NOT ${_NAME}_FIND_QUIETLY)
ELSE (${_NAME_UPPER}_FOUND)
IF (${_NAME}_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "${_FAIL_MESSAGE}")
ELSE (${_NAME}_FIND_REQUIRED)
IF (NOT ${_NAME}_FIND_QUIETLY)
MESSAGE(STATUS "${_FAIL_MESSAGE}")
ENDIF (NOT ${_NAME}_FIND_QUIETLY)
ENDIF (${_NAME}_FIND_REQUIRED)
ENDIF (${_NAME_UPPER}_FOUND)
ENDMACRO(FIND_PACKAGE_HANDLE_STANDARD_ARGS)
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/cmake/FindEditline.cmake
|
# Modified from FindReadline.cmake (PH Feb 2012)
if(EDITLINE_INCLUDE_DIR AND EDITLINE_LIBRARY AND NCURSES_LIBRARY)
set(EDITLINE_FOUND TRUE)
else(EDITLINE_INCLUDE_DIR AND EDITLINE_LIBRARY AND NCURSES_LIBRARY)
FIND_PATH(EDITLINE_INCLUDE_DIR readline.h
/usr/include/editline
/usr/include/edit/readline
/usr/include/readline
)
FIND_LIBRARY(EDITLINE_LIBRARY NAMES edit)
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Editline DEFAULT_MSG EDITLINE_INCLUDE_DIR EDITLINE_LIBRARY )
MARK_AS_ADVANCED(EDITLINE_INCLUDE_DIR EDITLINE_LIBRARY)
endif(EDITLINE_INCLUDE_DIR AND EDITLINE_LIBRARY AND NCURSES_LIBRARY)
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/pcre/cmake/FindReadline.cmake
|
# from http://websvn.kde.org/trunk/KDE/kdeedu/cmake/modules/FindReadline.cmake
# http://websvn.kde.org/trunk/KDE/kdeedu/cmake/modules/COPYING-CMAKE-SCRIPTS
# --> BSD licensed
#
# GNU Readline library finder
if(READLINE_INCLUDE_DIR AND READLINE_LIBRARY AND NCURSES_LIBRARY)
set(READLINE_FOUND TRUE)
else(READLINE_INCLUDE_DIR AND READLINE_LIBRARY AND NCURSES_LIBRARY)
FIND_PATH(READLINE_INCLUDE_DIR readline/readline.h
/usr/include/readline
)
# 2008-04-22 The next clause used to read like this:
#
# FIND_LIBRARY(READLINE_LIBRARY NAMES readline)
# FIND_LIBRARY(NCURSES_LIBRARY NAMES ncurses )
# include(FindPackageHandleStandardArgs)
# FIND_PACKAGE_HANDLE_STANDARD_ARGS(Readline DEFAULT_MSG NCURSES_LIBRARY READLINE_INCLUDE_DIR READLINE_LIBRARY )
#
# I was advised to modify it such that it will find an ncurses library if
# required, but not if one was explicitly given, that is, it allows the
# default to be overridden. PH
FIND_LIBRARY(READLINE_LIBRARY NAMES readline)
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Readline DEFAULT_MSG READLINE_INCLUDE_DIR READLINE_LIBRARY )
MARK_AS_ADVANCED(READLINE_INCLUDE_DIR READLINE_LIBRARY)
endif(READLINE_INCLUDE_DIR AND READLINE_LIBRARY AND NCURSES_LIBRARY)
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/chromium-zlib/CMakeLists.txt
|
# CMake build script for the bundled Chromium zlib implementation. So far, it
# is only supported for x86_64 processors with CLMUL, SSE3, SSE4.2.
#
# TODO: The Chromium build file (in deps/chromium-zlib/zlib/BUILD.gn) supports
# more platforms (like ARM with NEON), more can be enabled as needed.
CMAKE_MINIMUM_REQUIRED(VERSION 3.11)
include(FetchContent)
include(FindGit)
# Ensure that the git binary is present to download the sources.
find_package(Git)
IF(NOT Git_FOUND)
message(FATAL_ERROR "git is required to download the Chromium zlib sources")
ENDIF()
FetchContent_Populate(chromium_zlib_src
GIT_REPOSITORY https://chromium.googlesource.com/chromium/src/third_party/zlib.git
GIT_TAG 2c183c9f93a328bfb3121284da13cf89a0f7e64a
QUIET
)
# The Chromium build globally disables some warnings.
disable_warnings(implicit-fallthrough)
disable_warnings(unused-function)
disable_warnings(unused-parameter)
disable_warnings(sign-compare)
disable_warnings(declaration-after-statement)
disable_warnings(missing-declarations)
# -O3 is also set by the Chromium configuration and has been deemed safe enough
# for them.
SET(CMAKE_C_FLAGS_RELWITHDEBINFO "-O3 -g -DNDEBUG")
SET(CMAKE_C_FLAGS_RELEASE "-O3 -DNDEBUG")
# Common definitions.
add_definitions(
-DSTDC
-DNO_GZIP
-DZLIB_IMPLEMENTATION
)
list(APPEND SRC_ZLIB
"${chromium_zlib_src_SOURCE_DIR}/adler32.c"
"${chromium_zlib_src_SOURCE_DIR}/chromeconf.h"
"${chromium_zlib_src_SOURCE_DIR}/compress.c"
"${chromium_zlib_src_SOURCE_DIR}/contrib/optimizations/insert_string.h"
"${chromium_zlib_src_SOURCE_DIR}/cpu_features.c"
"${chromium_zlib_src_SOURCE_DIR}/cpu_features.h"
"${chromium_zlib_src_SOURCE_DIR}/crc32.c"
"${chromium_zlib_src_SOURCE_DIR}/crc32.h"
"${chromium_zlib_src_SOURCE_DIR}/deflate.c"
"${chromium_zlib_src_SOURCE_DIR}/deflate.h"
"${chromium_zlib_src_SOURCE_DIR}/gzclose.c"
"${chromium_zlib_src_SOURCE_DIR}/gzguts.h"
"${chromium_zlib_src_SOURCE_DIR}/gzlib.c"
"${chromium_zlib_src_SOURCE_DIR}/gzread.c"
"${chromium_zlib_src_SOURCE_DIR}/gzwrite.c"
"${chromium_zlib_src_SOURCE_DIR}/infback.c"
"${chromium_zlib_src_SOURCE_DIR}/inffast.c"
"${chromium_zlib_src_SOURCE_DIR}/inffast.h"
"${chromium_zlib_src_SOURCE_DIR}/inffixed.h"
"${chromium_zlib_src_SOURCE_DIR}/inflate.h"
"${chromium_zlib_src_SOURCE_DIR}/inftrees.c"
"${chromium_zlib_src_SOURCE_DIR}/inftrees.h"
"${chromium_zlib_src_SOURCE_DIR}/trees.c"
"${chromium_zlib_src_SOURCE_DIR}/trees.h"
"${chromium_zlib_src_SOURCE_DIR}/uncompr.c"
"${chromium_zlib_src_SOURCE_DIR}/zconf.h"
"${chromium_zlib_src_SOURCE_DIR}/zlib.h"
"${chromium_zlib_src_SOURCE_DIR}/zutil.c"
"${chromium_zlib_src_SOURCE_DIR}/zutil.h"
)
# x86_64-specific optimizations
string(APPEND CMAKE_C_FLAGS " -mssse3 -msse4.2 -mpclmul")
add_definitions(
-DCHROMIUM_ZLIB_NO_CHROMECONF
-DX86_NOT_WINDOWS
-DADLER32_SIMD_SSSE3
-DCRC32_SIMD_SSE42_PCLMUL
-DDEFLATE_FILL_WINDOW_SSE2
-DINFLATE_CHUNK_READ_64LE
-DINFLATE_CHUNK_SIMD_SSE2
)
list(APPEND SRC_ZLIB
"${chromium_zlib_src_SOURCE_DIR}/adler32_simd.c"
"${chromium_zlib_src_SOURCE_DIR}/adler32_simd.h"
"${chromium_zlib_src_SOURCE_DIR}/contrib/optimizations/chunkcopy.h"
"${chromium_zlib_src_SOURCE_DIR}/contrib/optimizations/inffast_chunk.c"
"${chromium_zlib_src_SOURCE_DIR}/contrib/optimizations/inffast_chunk.h"
"${chromium_zlib_src_SOURCE_DIR}/contrib/optimizations/inflate.c"
"${chromium_zlib_src_SOURCE_DIR}/crc32_simd.c"
"${chromium_zlib_src_SOURCE_DIR}/crc32_simd.h"
"${chromium_zlib_src_SOURCE_DIR}/crc_folding.c"
"${chromium_zlib_src_SOURCE_DIR}/fill_window_sse.c"
)
list(SORT SRC_ZLIB)
include_directories("${chromium_zlib_src_SOURCE_DIR}")
add_library(chromium_zlib OBJECT ${SRC_ZLIB})
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/inftrees.h
|
/* inftrees.h -- header to use inftrees.c
* Copyright (C) 1995-2005, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* Structure for decoding tables. Each entry provides either the
information needed to do the operation requested by the code that
indexed that table entry, or it provides a pointer to another
table that indexes more bits of the code. op indicates whether
the entry is a pointer to another table, a literal, a length or
distance, an end-of-block, or an invalid code. For a table
pointer, the low four bits of op is the number of index bits of
that table. For a length or distance, the low four bits of op
is the number of extra bits to get after the code. bits is
the number of bits in this code or part of the code to drop off
of the bit buffer. val is the actual byte to output in the case
of a literal, the base length or distance, or the offset from
the current table to the next table. Each entry is four bytes. */
typedef struct {
unsigned char op; /* operation, extra bits, table bits */
unsigned char bits; /* bits in this part of the code */
unsigned short val; /* offset in table or code value */
} code;
/* op values as set by inflate_table():
00000000 - literal
0000tttt - table link, tttt != 0 is the number of table index bits
0001eeee - length or distance, eeee is the number of extra bits
01100000 - end of block
01000000 - invalid code
*/
/* Maximum size of the dynamic table. The maximum number of code structures is
1444, which is the sum of 852 for literal/length codes and 592 for distance
codes. These values were found by exhaustive searches using the program
examples/enough.c found in the zlib distribtution. The arguments to that
program are the number of symbols, the initial root table size, and the
maximum bit length of a code. "enough 286 9 15" for literal/length codes
returns returns 852, and "enough 30 6 15" for distance codes returns 592.
The initial root table size (9 or 6) is found in the fifth argument of the
inflate_table() calls in inflate.c and infback.c. If the root table size is
changed, then these maximum sizes would be need to be recalculated and
updated. */
#define ENOUGH_LENS 852
#define ENOUGH_DISTS 592
#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
/* Type of code to build for inflate_table() */
typedef enum {
CODES,
LENS,
DISTS
} codetype;
int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens,
unsigned codes, code FAR * FAR *table,
unsigned FAR *bits, unsigned short FAR *work));
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/trees.c
|
/* trees.c -- output deflated data using Huffman coding
* Copyright (C) 1995-2017 Jean-loup Gailly
* detect_data_type() function provided freely by Cosmin Truta, 2006
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/*
* ALGORITHM
*
* The "deflation" process uses several Huffman trees. The more
* common source values are represented by shorter bit sequences.
*
* Each code tree is stored in a compressed form which is itself
* a Huffman encoding of the lengths of all the code strings (in
* ascending order by source values). The actual code strings are
* reconstructed from the lengths in the inflate process, as described
* in the deflate specification.
*
* REFERENCES
*
* Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".
* Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc
*
* Storer, James A.
* Data Compression: Methods and Theory, pp. 49-50.
* Computer Science Press, 1988. ISBN 0-7167-8156-5.
*
* Sedgewick, R.
* Algorithms, p290.
* Addison-Wesley, 1983. ISBN 0-201-06672-6.
*/
/* @(#) $Id$ */
/* #define GEN_TREES_H */
#include "deflate.h"
#ifdef ZLIB_DEBUG
# include <ctype.h>
#endif
/* ===========================================================================
* Constants
*/
#define MAX_BL_BITS 7
/* Bit length codes must not exceed MAX_BL_BITS bits */
#define END_BLOCK 256
/* end of block literal code */
#define REP_3_6 16
/* repeat previous bit length 3-6 times (2 bits of repeat count) */
#define REPZ_3_10 17
/* repeat a zero length 3-10 times (3 bits of repeat count) */
#define REPZ_11_138 18
/* repeat a zero length 11-138 times (7 bits of repeat count) */
local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */
= {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};
local const int extra_dbits[D_CODES] /* extra bits for each distance code */
= {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */
= {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};
local const uch bl_order[BL_CODES]
= {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
/* The lengths of the bit length codes are sent in order of decreasing
* probability, to avoid transmitting the lengths for unused bit length codes.
*/
/* ===========================================================================
* Local data. These are initialized only once.
*/
#define DIST_CODE_LEN 512 /* see definition of array dist_code below */
#if defined(GEN_TREES_H) || !defined(STDC)
/* non ANSI compilers may not accept trees.h */
local ct_data static_ltree[L_CODES+2];
/* The static literal tree. Since the bit lengths are imposed, there is no
* need for the L_CODES extra codes used during heap construction. However
* The codes 286 and 287 are needed to build a canonical tree (see _tr_init
* below).
*/
local ct_data static_dtree[D_CODES];
/* The static distance tree. (Actually a trivial tree since all codes use
* 5 bits.)
*/
uch _dist_code[DIST_CODE_LEN];
/* Distance codes. The first 256 values correspond to the distances
* 3 .. 258, the last 256 values correspond to the top 8 bits of
* the 15 bit distances.
*/
uch _length_code[MAX_MATCH-MIN_MATCH+1];
/* length code for each normalized match length (0 == MIN_MATCH) */
local int base_length[LENGTH_CODES];
/* First normalized length for each code (0 = MIN_MATCH) */
local int base_dist[D_CODES];
/* First normalized distance for each code (0 = distance of 1) */
#else
# include "trees.h"
#endif /* GEN_TREES_H */
struct static_tree_desc_s {
const ct_data *static_tree; /* static tree or NULL */
const intf *extra_bits; /* extra bits for each code or NULL */
int extra_base; /* base index for extra_bits */
int elems; /* max number of elements in the tree */
int max_length; /* max bit length for the codes */
};
local const static_tree_desc static_l_desc =
{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};
local const static_tree_desc static_d_desc =
{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS};
local const static_tree_desc static_bl_desc =
{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS};
/* ===========================================================================
* Local (static) routines in this file.
*/
local void tr_static_init OF((void));
local void init_block OF((deflate_state *s));
local void pqdownheap OF((deflate_state *s, ct_data *tree, int k));
local void gen_bitlen OF((deflate_state *s, tree_desc *desc));
local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count));
local void build_tree OF((deflate_state *s, tree_desc *desc));
local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code));
local void send_tree OF((deflate_state *s, ct_data *tree, int max_code));
local int build_bl_tree OF((deflate_state *s));
local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
int blcodes));
local void compress_block OF((deflate_state *s, const ct_data *ltree,
const ct_data *dtree));
local int detect_data_type OF((deflate_state *s));
local unsigned bi_reverse OF((unsigned value, int length));
local void bi_windup OF((deflate_state *s));
local void bi_flush OF((deflate_state *s));
#ifdef GEN_TREES_H
local void gen_trees_header OF((void));
#endif
#ifndef ZLIB_DEBUG
# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)
/* Send a code of the given tree. c and tree must not have side effects */
#else /* !ZLIB_DEBUG */
# define send_code(s, c, tree) \
{ if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \
send_bits(s, tree[c].Code, tree[c].Len); }
#endif
/* ===========================================================================
* Output a short LSB first on the stream.
* IN assertion: there is enough room in pendingBuf.
*/
#define put_short(s, w) { \
put_byte(s, (uch)((w) & 0xff)); \
put_byte(s, (uch)((ush)(w) >> 8)); \
}
/* ===========================================================================
* Send a value on a given number of bits.
* IN assertion: length <= 16 and value fits in length bits.
*/
#ifdef ZLIB_DEBUG
local void send_bits OF((deflate_state *s, int value, int length));
local void send_bits(s, value, length)
deflate_state *s;
int value; /* value to send */
int length; /* number of bits */
{
Tracevv((stderr," l %2d v %4x ", length, value));
Assert(length > 0 && length <= 15, "invalid length");
s->bits_sent += (ulg)length;
/* If not enough room in bi_buf, use (valid) bits from bi_buf and
* (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
* unused bits in value.
*/
if (s->bi_valid > (int)Buf_size - length) {
s->bi_buf |= (ush)value << s->bi_valid;
put_short(s, s->bi_buf);
s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
s->bi_valid += length - Buf_size;
} else {
s->bi_buf |= (ush)value << s->bi_valid;
s->bi_valid += length;
}
}
#else /* !ZLIB_DEBUG */
#define send_bits(s, value, length) \
{ int len = length;\
if (s->bi_valid > (int)Buf_size - len) {\
int val = (int)value;\
s->bi_buf |= (ush)val << s->bi_valid;\
put_short(s, s->bi_buf);\
s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
s->bi_valid += len - Buf_size;\
} else {\
s->bi_buf |= (ush)(value) << s->bi_valid;\
s->bi_valid += len;\
}\
}
#endif /* ZLIB_DEBUG */
/* the arguments must not have side effects */
/* ===========================================================================
* Initialize the various 'constant' tables.
*/
local void tr_static_init()
{
#if defined(GEN_TREES_H) || !defined(STDC)
static int static_init_done = 0;
int n; /* iterates over tree elements */
int bits; /* bit counter */
int length; /* length value */
int code; /* code value */
int dist; /* distance index */
ush bl_count[MAX_BITS+1];
/* number of codes at each bit length for an optimal tree */
if (static_init_done) return;
/* For some embedded targets, global variables are not initialized: */
#ifdef NO_INIT_GLOBAL_POINTERS
static_l_desc.static_tree = static_ltree;
static_l_desc.extra_bits = extra_lbits;
static_d_desc.static_tree = static_dtree;
static_d_desc.extra_bits = extra_dbits;
static_bl_desc.extra_bits = extra_blbits;
#endif
/* Initialize the mapping length (0..255) -> length code (0..28) */
length = 0;
for (code = 0; code < LENGTH_CODES-1; code++) {
base_length[code] = length;
for (n = 0; n < (1<<extra_lbits[code]); n++) {
_length_code[length++] = (uch)code;
}
}
Assert (length == 256, "tr_static_init: length != 256");
/* Note that the length 255 (match length 258) can be represented
* in two different ways: code 284 + 5 bits or code 285, so we
* overwrite length_code[255] to use the best encoding:
*/
_length_code[length-1] = (uch)code;
/* Initialize the mapping dist (0..32K) -> dist code (0..29) */
dist = 0;
for (code = 0 ; code < 16; code++) {
base_dist[code] = dist;
for (n = 0; n < (1<<extra_dbits[code]); n++) {
_dist_code[dist++] = (uch)code;
}
}
Assert (dist == 256, "tr_static_init: dist != 256");
dist >>= 7; /* from now on, all distances are divided by 128 */
for ( ; code < D_CODES; code++) {
base_dist[code] = dist << 7;
for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
_dist_code[256 + dist++] = (uch)code;
}
}
Assert (dist == 256, "tr_static_init: 256+dist != 512");
/* Construct the codes of the static literal tree */
for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
n = 0;
while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;
while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;
while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;
while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;
/* Codes 286 and 287 do not exist, but we must include them in the
* tree construction to get a canonical Huffman tree (longest code
* all ones)
*/
gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);
/* The static distance tree is trivial: */
for (n = 0; n < D_CODES; n++) {
static_dtree[n].Len = 5;
static_dtree[n].Code = bi_reverse((unsigned)n, 5);
}
static_init_done = 1;
# ifdef GEN_TREES_H
gen_trees_header();
# endif
#endif /* defined(GEN_TREES_H) || !defined(STDC) */
}
/* ===========================================================================
* Genererate the file trees.h describing the static trees.
*/
#ifdef GEN_TREES_H
# ifndef ZLIB_DEBUG
# include <stdio.h>
# endif
# define SEPARATOR(i, last, width) \
((i) == (last)? "\n};\n\n" : \
((i) % (width) == (width)-1 ? ",\n" : ", "))
void gen_trees_header()
{
FILE *header = fopen("trees.h", "w");
int i;
Assert (header != NULL, "Can't open trees.h");
fprintf(header,
"/* header created automatically with -DGEN_TREES_H */\n\n");
fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");
for (i = 0; i < L_CODES+2; i++) {
fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
}
fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");
for (i = 0; i < D_CODES; i++) {
fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
}
fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n");
for (i = 0; i < DIST_CODE_LEN; i++) {
fprintf(header, "%2u%s", _dist_code[i],
SEPARATOR(i, DIST_CODE_LEN-1, 20));
}
fprintf(header,
"const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
fprintf(header, "%2u%s", _length_code[i],
SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
}
fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");
for (i = 0; i < LENGTH_CODES; i++) {
fprintf(header, "%1u%s", base_length[i],
SEPARATOR(i, LENGTH_CODES-1, 20));
}
fprintf(header, "local const int base_dist[D_CODES] = {\n");
for (i = 0; i < D_CODES; i++) {
fprintf(header, "%5u%s", base_dist[i],
SEPARATOR(i, D_CODES-1, 10));
}
fclose(header);
}
#endif /* GEN_TREES_H */
/* ===========================================================================
* Initialize the tree data structures for a new zlib stream.
*/
void ZLIB_INTERNAL _tr_init(s)
deflate_state *s;
{
tr_static_init();
s->l_desc.dyn_tree = s->dyn_ltree;
s->l_desc.stat_desc = &static_l_desc;
s->d_desc.dyn_tree = s->dyn_dtree;
s->d_desc.stat_desc = &static_d_desc;
s->bl_desc.dyn_tree = s->bl_tree;
s->bl_desc.stat_desc = &static_bl_desc;
s->bi_buf = 0;
s->bi_valid = 0;
#ifdef ZLIB_DEBUG
s->compressed_len = 0L;
s->bits_sent = 0L;
#endif
/* Initialize the first block of the first file: */
init_block(s);
}
/* ===========================================================================
* Initialize a new block.
*/
local void init_block(s)
deflate_state *s;
{
int n; /* iterates over tree elements */
/* Initialize the trees. */
for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0;
for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0;
for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;
s->dyn_ltree[END_BLOCK].Freq = 1;
s->opt_len = s->static_len = 0L;
s->last_lit = s->matches = 0;
}
#define SMALLEST 1
/* Index within the heap array of least frequent node in the Huffman tree */
/* ===========================================================================
* Remove the smallest element from the heap and recreate the heap with
* one less element. Updates heap and heap_len.
*/
#define pqremove(s, tree, top) \
{\
top = s->heap[SMALLEST]; \
s->heap[SMALLEST] = s->heap[s->heap_len--]; \
pqdownheap(s, tree, SMALLEST); \
}
/* ===========================================================================
* Compares to subtrees, using the tree depth as tie breaker when
* the subtrees have equal frequency. This minimizes the worst case length.
*/
#define smaller(tree, n, m, depth) \
(tree[n].Freq < tree[m].Freq || \
(tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))
/* ===========================================================================
* Restore the heap property by moving down the tree starting at node k,
* exchanging a node with the smallest of its two sons if necessary, stopping
* when the heap property is re-established (each father smaller than its
* two sons).
*/
local void pqdownheap(s, tree, k)
deflate_state *s;
ct_data *tree; /* the tree to restore */
int k; /* node to move down */
{
int v = s->heap[k];
int j = k << 1; /* left son of k */
while (j <= s->heap_len) {
/* Set j to the smallest of the two sons: */
if (j < s->heap_len &&
smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {
j++;
}
/* Exit if v is smaller than both sons */
if (smaller(tree, v, s->heap[j], s->depth)) break;
/* Exchange v with the smallest son */
s->heap[k] = s->heap[j]; k = j;
/* And continue down the tree, setting j to the left son of k */
j <<= 1;
}
s->heap[k] = v;
}
/* ===========================================================================
* Compute the optimal bit lengths for a tree and update the total bit length
* for the current block.
* IN assertion: the fields freq and dad are set, heap[heap_max] and
* above are the tree nodes sorted by increasing frequency.
* OUT assertions: the field len is set to the optimal bit length, the
* array bl_count contains the frequencies for each bit length.
* The length opt_len is updated; static_len is also updated if stree is
* not null.
*/
local void gen_bitlen(s, desc)
deflate_state *s;
tree_desc *desc; /* the tree descriptor */
{
ct_data *tree = desc->dyn_tree;
int max_code = desc->max_code;
const ct_data *stree = desc->stat_desc->static_tree;
const intf *extra = desc->stat_desc->extra_bits;
int base = desc->stat_desc->extra_base;
int max_length = desc->stat_desc->max_length;
int h; /* heap index */
int n, m; /* iterate over the tree elements */
int bits; /* bit length */
int xbits; /* extra bits */
ush f; /* frequency */
int overflow = 0; /* number of elements with bit length too large */
for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;
/* In a first pass, compute the optimal bit lengths (which may
* overflow in the case of the bit length tree).
*/
tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
for (h = s->heap_max+1; h < HEAP_SIZE; h++) {
n = s->heap[h];
bits = tree[tree[n].Dad].Len + 1;
if (bits > max_length) bits = max_length, overflow++;
tree[n].Len = (ush)bits;
/* We overwrite tree[n].Dad which is no longer needed */
if (n > max_code) continue; /* not a leaf node */
s->bl_count[bits]++;
xbits = 0;
if (n >= base) xbits = extra[n-base];
f = tree[n].Freq;
s->opt_len += (ulg)f * (unsigned)(bits + xbits);
if (stree) s->static_len += (ulg)f * (unsigned)(stree[n].Len + xbits);
}
if (overflow == 0) return;
Tracev((stderr,"\nbit length overflow\n"));
/* This happens for example on obj2 and pic of the Calgary corpus */
/* Find the first bit length which could increase: */
do {
bits = max_length-1;
while (s->bl_count[bits] == 0) bits--;
s->bl_count[bits]--; /* move one leaf down the tree */
s->bl_count[bits+1] += 2; /* move one overflow item as its brother */
s->bl_count[max_length]--;
/* The brother of the overflow item also moves one step up,
* but this does not affect bl_count[max_length]
*/
overflow -= 2;
} while (overflow > 0);
/* Now recompute all bit lengths, scanning in increasing frequency.
* h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
* lengths instead of fixing only the wrong ones. This idea is taken
* from 'ar' written by Haruhiko Okumura.)
*/
for (bits = max_length; bits != 0; bits--) {
n = s->bl_count[bits];
while (n != 0) {
m = s->heap[--h];
if (m > max_code) continue;
if ((unsigned) tree[m].Len != (unsigned) bits) {
Tracev((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
s->opt_len += ((ulg)bits - tree[m].Len) * tree[m].Freq;
tree[m].Len = (ush)bits;
}
n--;
}
}
}
/* ===========================================================================
* Generate the codes for a given tree and bit counts (which need not be
* optimal).
* IN assertion: the array bl_count contains the bit length statistics for
* the given tree and the field len is set for all tree elements.
* OUT assertion: the field code is set for all tree elements of non
* zero code length.
*/
local void gen_codes (tree, max_code, bl_count)
ct_data *tree; /* the tree to decorate */
int max_code; /* largest code with non zero frequency */
ushf *bl_count; /* number of codes at each bit length */
{
ush next_code[MAX_BITS+1]; /* next code value for each bit length */
unsigned code = 0; /* running code value */
int bits; /* bit index */
int n; /* code index */
/* The distribution counts are first used to generate the code values
* without bit reversal.
*/
for (bits = 1; bits <= MAX_BITS; bits++) {
code = (code + bl_count[bits-1]) << 1;
next_code[bits] = (ush)code;
}
/* Check that the bit counts in bl_count are consistent. The last code
* must be all ones.
*/
Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
"inconsistent bit counts");
Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
for (n = 0; n <= max_code; n++) {
int len = tree[n].Len;
if (len == 0) continue;
/* Now reverse the bits */
tree[n].Code = (ush)bi_reverse(next_code[len]++, len);
Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
}
}
/* ===========================================================================
* Construct one Huffman tree and assigns the code bit strings and lengths.
* Update the total bit length for the current block.
* IN assertion: the field freq is set for all tree elements.
* OUT assertions: the fields len and code are set to the optimal bit length
* and corresponding code. The length opt_len is updated; static_len is
* also updated if stree is not null. The field max_code is set.
*/
local void build_tree(s, desc)
deflate_state *s;
tree_desc *desc; /* the tree descriptor */
{
ct_data *tree = desc->dyn_tree;
const ct_data *stree = desc->stat_desc->static_tree;
int elems = desc->stat_desc->elems;
int n, m; /* iterate over heap elements */
int max_code = -1; /* largest code with non zero frequency */
int node; /* new node being created */
/* Construct the initial heap, with least frequent element in
* heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
* heap[0] is not used.
*/
s->heap_len = 0, s->heap_max = HEAP_SIZE;
for (n = 0; n < elems; n++) {
if (tree[n].Freq != 0) {
s->heap[++(s->heap_len)] = max_code = n;
s->depth[n] = 0;
} else {
tree[n].Len = 0;
}
}
/* The pkzip format requires that at least one distance code exists,
* and that at least one bit should be sent even if there is only one
* possible code. So to avoid special checks later on we force at least
* two codes of non zero frequency.
*/
while (s->heap_len < 2) {
node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);
tree[node].Freq = 1;
s->depth[node] = 0;
s->opt_len--; if (stree) s->static_len -= stree[node].Len;
/* node is 0 or 1 so it does not have extra bits */
}
desc->max_code = max_code;
/* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
* establish sub-heaps of increasing lengths:
*/
for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
/* Construct the Huffman tree by repeatedly combining the least two
* frequent nodes.
*/
node = elems; /* next internal node of the tree */
do {
pqremove(s, tree, n); /* n = node of least frequency */
m = s->heap[SMALLEST]; /* m = node of next least frequency */
s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */
s->heap[--(s->heap_max)] = m;
/* Create a new node father of n and m */
tree[node].Freq = tree[n].Freq + tree[m].Freq;
s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ?
s->depth[n] : s->depth[m]) + 1);
tree[n].Dad = tree[m].Dad = (ush)node;
#ifdef DUMP_BL_TREE
if (tree == s->bl_tree) {
fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",
node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);
}
#endif
/* and insert the new node in the heap */
s->heap[SMALLEST] = node++;
pqdownheap(s, tree, SMALLEST);
} while (s->heap_len >= 2);
s->heap[--(s->heap_max)] = s->heap[SMALLEST];
/* At this point, the fields freq and dad are set. We can now
* generate the bit lengths.
*/
gen_bitlen(s, (tree_desc *)desc);
/* The field len is now set, we can generate the bit codes */
gen_codes ((ct_data *)tree, max_code, s->bl_count);
}
/* ===========================================================================
* Scan a literal or distance tree to determine the frequencies of the codes
* in the bit length tree.
*/
local void scan_tree (s, tree, max_code)
deflate_state *s;
ct_data *tree; /* the tree to be scanned */
int max_code; /* and its largest code of non zero frequency */
{
int n; /* iterates over all tree elements */
int prevlen = -1; /* last emitted length */
int curlen; /* length of current code */
int nextlen = tree[0].Len; /* length of next code */
int count = 0; /* repeat count of the current code */
int max_count = 7; /* max repeat count */
int min_count = 4; /* min repeat count */
if (nextlen == 0) max_count = 138, min_count = 3;
tree[max_code+1].Len = (ush)0xffff; /* guard */
for (n = 0; n <= max_code; n++) {
curlen = nextlen; nextlen = tree[n+1].Len;
if (++count < max_count && curlen == nextlen) {
continue;
} else if (count < min_count) {
s->bl_tree[curlen].Freq += count;
} else if (curlen != 0) {
if (curlen != prevlen) s->bl_tree[curlen].Freq++;
s->bl_tree[REP_3_6].Freq++;
} else if (count <= 10) {
s->bl_tree[REPZ_3_10].Freq++;
} else {
s->bl_tree[REPZ_11_138].Freq++;
}
count = 0; prevlen = curlen;
if (nextlen == 0) {
max_count = 138, min_count = 3;
} else if (curlen == nextlen) {
max_count = 6, min_count = 3;
} else {
max_count = 7, min_count = 4;
}
}
}
/* ===========================================================================
* Send a literal or distance tree in compressed form, using the codes in
* bl_tree.
*/
local void send_tree (s, tree, max_code)
deflate_state *s;
ct_data *tree; /* the tree to be scanned */
int max_code; /* and its largest code of non zero frequency */
{
int n; /* iterates over all tree elements */
int prevlen = -1; /* last emitted length */
int curlen; /* length of current code */
int nextlen = tree[0].Len; /* length of next code */
int count = 0; /* repeat count of the current code */
int max_count = 7; /* max repeat count */
int min_count = 4; /* min repeat count */
/* tree[max_code+1].Len = -1; */ /* guard already set */
if (nextlen == 0) max_count = 138, min_count = 3;
for (n = 0; n <= max_code; n++) {
curlen = nextlen; nextlen = tree[n+1].Len;
if (++count < max_count && curlen == nextlen) {
continue;
} else if (count < min_count) {
do { send_code(s, curlen, s->bl_tree); } while (--count != 0);
} else if (curlen != 0) {
if (curlen != prevlen) {
send_code(s, curlen, s->bl_tree); count--;
}
Assert(count >= 3 && count <= 6, " 3_6?");
send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);
} else if (count <= 10) {
send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);
} else {
send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);
}
count = 0; prevlen = curlen;
if (nextlen == 0) {
max_count = 138, min_count = 3;
} else if (curlen == nextlen) {
max_count = 6, min_count = 3;
} else {
max_count = 7, min_count = 4;
}
}
}
/* ===========================================================================
* Construct the Huffman tree for the bit lengths and return the index in
* bl_order of the last bit length code to send.
*/
local int build_bl_tree(s)
deflate_state *s;
{
int max_blindex; /* index of last bit length code of non zero freq */
/* Determine the bit length frequencies for literal and distance trees */
scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);
scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);
/* Build the bit length tree: */
build_tree(s, (tree_desc *)(&(s->bl_desc)));
/* opt_len now includes the length of the tree representations, except
* the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
*/
/* Determine the number of bit length codes to send. The pkzip format
* requires that at least 4 bit length codes be sent. (appnote.txt says
* 3 but the actual value used is 4.)
*/
for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
}
/* Update opt_len to include the bit length tree and counts */
s->opt_len += 3*((ulg)max_blindex+1) + 5+5+4;
Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
s->opt_len, s->static_len));
return max_blindex;
}
/* ===========================================================================
* Send the header for a block using dynamic Huffman trees: the counts, the
* lengths of the bit length codes, the literal tree and the distance tree.
* IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
*/
local void send_all_trees(s, lcodes, dcodes, blcodes)
deflate_state *s;
int lcodes, dcodes, blcodes; /* number of codes for each tree */
{
int rank; /* index in bl_order */
Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
"too many codes");
Tracev((stderr, "\nbl counts: "));
send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
send_bits(s, dcodes-1, 5);
send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */
for (rank = 0; rank < blcodes; rank++) {
Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
}
Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */
Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */
Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}
/* ===========================================================================
* Send a stored block
*/
void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last)
deflate_state *s;
charf *buf; /* input block */
ulg stored_len; /* length of input block */
int last; /* one if this is the last block for a file */
{
send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */
bi_windup(s); /* align on byte boundary */
put_short(s, (ush)stored_len);
put_short(s, (ush)~stored_len);
zmemcpy(s->pending_buf + s->pending, (Bytef *)buf, stored_len);
s->pending += stored_len;
#ifdef ZLIB_DEBUG
s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
s->compressed_len += (stored_len + 4) << 3;
s->bits_sent += 2*16;
s->bits_sent += stored_len<<3;
#endif
}
/* ===========================================================================
* Flush the bits in the bit buffer to pending output (leaves at most 7 bits)
*/
void ZLIB_INTERNAL _tr_flush_bits(s)
deflate_state *s;
{
bi_flush(s);
}
/* ===========================================================================
* Send one empty static block to give enough lookahead for inflate.
* This takes 10 bits, of which 7 may remain in the bit buffer.
*/
void ZLIB_INTERNAL _tr_align(s)
deflate_state *s;
{
send_bits(s, STATIC_TREES<<1, 3);
send_code(s, END_BLOCK, static_ltree);
#ifdef ZLIB_DEBUG
s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
#endif
bi_flush(s);
}
/* ===========================================================================
* Determine the best encoding for the current block: dynamic trees, static
* trees or store, and write out the encoded block.
*/
void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
deflate_state *s;
charf *buf; /* input block, or NULL if too old */
ulg stored_len; /* length of input block */
int last; /* one if this is the last block for a file */
{
ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */
int max_blindex = 0; /* index of last bit length code of non zero freq */
/* Build the Huffman trees unless a stored block is forced */
if (s->level > 0) {
/* Check if the file is binary or text */
if (s->strm->data_type == Z_UNKNOWN)
s->strm->data_type = detect_data_type(s);
/* Construct the literal and distance trees */
build_tree(s, (tree_desc *)(&(s->l_desc)));
Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
s->static_len));
build_tree(s, (tree_desc *)(&(s->d_desc)));
Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
s->static_len));
/* At this point, opt_len and static_len are the total bit lengths of
* the compressed block data, excluding the tree representations.
*/
/* Build the bit length tree for the above two trees, and get the index
* in bl_order of the last bit length code to send.
*/
max_blindex = build_bl_tree(s);
/* Determine the best encoding. Compute the block lengths in bytes. */
opt_lenb = (s->opt_len+3+7)>>3;
static_lenb = (s->static_len+3+7)>>3;
Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
s->last_lit));
if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
} else {
Assert(buf != (char*)0, "lost buf");
opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
}
#ifdef FORCE_STORED
if (buf != (char*)0) { /* force stored block */
#else
if (stored_len+4 <= opt_lenb && buf != (char*)0) {
/* 4: two words for the lengths */
#endif
/* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
* Otherwise we can't have processed more than WSIZE input bytes since
* the last block flush, because compression would have been
* successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
* transform a block into a stored block.
*/
_tr_stored_block(s, buf, stored_len, last);
#ifdef FORCE_STATIC
} else if (static_lenb >= 0) { /* force static trees */
#else
} else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {
#endif
send_bits(s, (STATIC_TREES<<1)+last, 3);
compress_block(s, (const ct_data *)static_ltree,
(const ct_data *)static_dtree);
#ifdef ZLIB_DEBUG
s->compressed_len += 3 + s->static_len;
#endif
} else {
send_bits(s, (DYN_TREES<<1)+last, 3);
send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
max_blindex+1);
compress_block(s, (const ct_data *)s->dyn_ltree,
(const ct_data *)s->dyn_dtree);
#ifdef ZLIB_DEBUG
s->compressed_len += 3 + s->opt_len;
#endif
}
Assert (s->compressed_len == s->bits_sent, "bad compressed size");
/* The above check is made mod 2^32, for files larger than 512 MB
* and uLong implemented on 32 bits.
*/
init_block(s);
if (last) {
bi_windup(s);
#ifdef ZLIB_DEBUG
s->compressed_len += 7; /* align on byte boundary */
#endif
}
Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
s->compressed_len-7*last));
}
/* ===========================================================================
* Save the match info and tally the frequency counts. Return true if
* the current block must be flushed.
*/
int ZLIB_INTERNAL _tr_tally (s, dist, lc)
deflate_state *s;
unsigned dist; /* distance of matched string */
unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */
{
s->d_buf[s->last_lit] = (ush)dist;
s->l_buf[s->last_lit++] = (uch)lc;
if (dist == 0) {
/* lc is the unmatched char */
s->dyn_ltree[lc].Freq++;
} else {
s->matches++;
/* Here, lc is the match length - MIN_MATCH */
dist--; /* dist = match distance - 1 */
Assert((ush)dist < (ush)MAX_DIST(s) &&
(ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
(ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match");
s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
s->dyn_dtree[d_code(dist)].Freq++;
}
#ifdef TRUNCATE_BLOCK
/* Try to guess if it is profitable to stop the current block here */
if ((s->last_lit & 0x1fff) == 0 && s->level > 2) {
/* Compute an upper bound for the compressed length */
ulg out_length = (ulg)s->last_lit*8L;
ulg in_length = (ulg)((long)s->strstart - s->block_start);
int dcode;
for (dcode = 0; dcode < D_CODES; dcode++) {
out_length += (ulg)s->dyn_dtree[dcode].Freq *
(5L+extra_dbits[dcode]);
}
out_length >>= 3;
Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
s->last_lit, in_length, out_length,
100L - out_length*100L/in_length));
if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1;
}
#endif
return (s->last_lit == s->lit_bufsize-1);
/* We avoid equality with lit_bufsize because of wraparound at 64K
* on 16 bit machines and because stored blocks are restricted to
* 64K-1 bytes.
*/
}
/* ===========================================================================
* Send the block data compressed using the given Huffman trees
*/
local void compress_block(s, ltree, dtree)
deflate_state *s;
const ct_data *ltree; /* literal tree */
const ct_data *dtree; /* distance tree */
{
unsigned dist; /* distance of matched string */
int lc; /* match length or unmatched char (if dist == 0) */
unsigned lx = 0; /* running index in l_buf */
unsigned code; /* the code to send */
int extra; /* number of extra bits to send */
if (s->last_lit != 0) do {
dist = s->d_buf[lx];
lc = s->l_buf[lx++];
if (dist == 0) {
send_code(s, lc, ltree); /* send a literal byte */
Tracecv(isgraph(lc), (stderr," '%c' ", lc));
} else {
/* Here, lc is the match length - MIN_MATCH */
code = _length_code[lc];
send_code(s, code+LITERALS+1, ltree); /* send the length code */
extra = extra_lbits[code];
if (extra != 0) {
lc -= base_length[code];
send_bits(s, lc, extra); /* send the extra length bits */
}
dist--; /* dist is now the match distance - 1 */
code = d_code(dist);
Assert (code < D_CODES, "bad d_code");
send_code(s, code, dtree); /* send the distance code */
extra = extra_dbits[code];
if (extra != 0) {
dist -= (unsigned)base_dist[code];
send_bits(s, dist, extra); /* send the extra distance bits */
}
} /* literal or match pair ? */
/* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
"pendingBuf overflow");
} while (lx < s->last_lit);
send_code(s, END_BLOCK, ltree);
}
/* ===========================================================================
* Check if the data type is TEXT or BINARY, using the following algorithm:
* - TEXT if the two conditions below are satisfied:
* a) There are no non-portable control characters belonging to the
* "black list" (0..6, 14..25, 28..31).
* b) There is at least one printable character belonging to the
* "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
* - BINARY otherwise.
* - The following partially-portable control characters form a
* "gray list" that is ignored in this detection algorithm:
* (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
* IN assertion: the fields Freq of dyn_ltree are set.
*/
local int detect_data_type(s)
deflate_state *s;
{
/* black_mask is the bit mask of black-listed bytes
* set bits 0..6, 14..25, and 28..31
* 0xf3ffc07f = binary 11110011111111111100000001111111
*/
unsigned long black_mask = 0xf3ffc07fUL;
int n;
/* Check for non-textual ("black-listed") bytes. */
for (n = 0; n <= 31; n++, black_mask >>= 1)
if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0))
return Z_BINARY;
/* Check for textual ("white-listed") bytes. */
if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0
|| s->dyn_ltree[13].Freq != 0)
return Z_TEXT;
for (n = 32; n < LITERALS; n++)
if (s->dyn_ltree[n].Freq != 0)
return Z_TEXT;
/* There are no "black-listed" or "white-listed" bytes:
* this stream either is empty or has tolerated ("gray-listed") bytes only.
*/
return Z_BINARY;
}
/* ===========================================================================
* Reverse the first len bits of a code, using straightforward code (a faster
* method would use a table)
* IN assertion: 1 <= len <= 15
*/
local unsigned bi_reverse(code, len)
unsigned code; /* the value to invert */
int len; /* its bit length */
{
register unsigned res = 0;
do {
res |= code & 1;
code >>= 1, res <<= 1;
} while (--len > 0);
return res >> 1;
}
/* ===========================================================================
* Flush the bit buffer, keeping at most 7 bits in it.
*/
local void bi_flush(s)
deflate_state *s;
{
if (s->bi_valid == 16) {
put_short(s, s->bi_buf);
s->bi_buf = 0;
s->bi_valid = 0;
} else if (s->bi_valid >= 8) {
put_byte(s, (Byte)s->bi_buf);
s->bi_buf >>= 8;
s->bi_valid -= 8;
}
}
/* ===========================================================================
* Flush the bit buffer and align the output on a byte boundary
*/
local void bi_windup(s)
deflate_state *s;
{
if (s->bi_valid > 8) {
put_short(s, s->bi_buf);
} else if (s->bi_valid > 0) {
put_byte(s, (Byte)s->bi_buf);
}
s->bi_buf = 0;
s->bi_valid = 0;
#ifdef ZLIB_DEBUG
s->bits_sent = (s->bits_sent+7) & ~7;
#endif
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/adler32.c
|
/* adler32.c -- compute the Adler-32 checksum of a data stream
* Copyright (C) 1995-2011, 2016 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#include "zutil.h"
local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
#define BASE 65521U /* largest prime smaller than 65536 */
#define NMAX 5552
/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}
#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
#define DO16(buf) DO8(buf,0); DO8(buf,8);
/* use NO_DIVIDE if your processor does not do division in hardware --
try it both ways to see which is faster */
#ifdef NO_DIVIDE
/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
(thank you to John Reiser for pointing this out) */
# define CHOP(a) \
do { \
unsigned long tmp = a >> 16; \
a &= 0xffffUL; \
a += (tmp << 4) - tmp; \
} while (0)
# define MOD28(a) \
do { \
CHOP(a); \
if (a >= BASE) a -= BASE; \
} while (0)
# define MOD(a) \
do { \
CHOP(a); \
MOD28(a); \
} while (0)
# define MOD63(a) \
do { /* this assumes a is not negative */ \
z_off64_t tmp = a >> 32; \
a &= 0xffffffffL; \
a += (tmp << 8) - (tmp << 5) + tmp; \
tmp = a >> 16; \
a &= 0xffffL; \
a += (tmp << 4) - tmp; \
tmp = a >> 16; \
a &= 0xffffL; \
a += (tmp << 4) - tmp; \
if (a >= BASE) a -= BASE; \
} while (0)
#else
# define MOD(a) a %= BASE
# define MOD28(a) a %= BASE
# define MOD63(a) a %= BASE
#endif
/* ========================================================================= */
uLong ZEXPORT adler32_z(adler, buf, len)
uLong adler;
const Bytef *buf;
z_size_t len;
{
unsigned long sum2;
unsigned n;
/* split Adler-32 into component sums */
sum2 = (adler >> 16) & 0xffff;
adler &= 0xffff;
/* in case user likes doing a byte at a time, keep it fast */
if (len == 1) {
adler += buf[0];
if (adler >= BASE)
adler -= BASE;
sum2 += adler;
if (sum2 >= BASE)
sum2 -= BASE;
return adler | (sum2 << 16);
}
/* initial Adler-32 value (deferred check for len == 1 speed) */
if (buf == Z_NULL)
return 1L;
/* in case short lengths are provided, keep it somewhat fast */
if (len < 16) {
while (len--) {
adler += *buf++;
sum2 += adler;
}
if (adler >= BASE)
adler -= BASE;
MOD28(sum2); /* only added so many BASE's */
return adler | (sum2 << 16);
}
/* do length NMAX blocks -- requires just one modulo operation */
while (len >= NMAX) {
len -= NMAX;
n = NMAX / 16; /* NMAX is divisible by 16 */
do {
DO16(buf); /* 16 sums unrolled */
buf += 16;
} while (--n);
MOD(adler);
MOD(sum2);
}
/* do remaining bytes (less than NMAX, still just one modulo) */
if (len) { /* avoid modulos if none remaining */
while (len >= 16) {
len -= 16;
DO16(buf);
buf += 16;
}
while (len--) {
adler += *buf++;
sum2 += adler;
}
MOD(adler);
MOD(sum2);
}
/* return recombined sums */
return adler | (sum2 << 16);
}
/* ========================================================================= */
uLong ZEXPORT adler32(adler, buf, len)
uLong adler;
const Bytef *buf;
uInt len;
{
return adler32_z(adler, buf, len);
}
/* ========================================================================= */
local uLong adler32_combine_(adler1, adler2, len2)
uLong adler1;
uLong adler2;
z_off64_t len2;
{
unsigned long sum1;
unsigned long sum2;
unsigned rem;
/* for negative len, return invalid adler32 as a clue for debugging */
if (len2 < 0)
return 0xffffffffUL;
/* the derivation of this formula is left as an exercise for the reader */
MOD63(len2); /* assumes len2 >= 0 */
rem = (unsigned)len2;
sum1 = adler1 & 0xffff;
sum2 = rem * sum1;
MOD(sum2);
sum1 += (adler2 & 0xffff) + BASE - 1;
sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
if (sum1 >= BASE) sum1 -= BASE;
if (sum1 >= BASE) sum1 -= BASE;
if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1);
if (sum2 >= BASE) sum2 -= BASE;
return sum1 | (sum2 << 16);
}
/* ========================================================================= */
uLong ZEXPORT adler32_combine(adler1, adler2, len2)
uLong adler1;
uLong adler2;
z_off_t len2;
{
return adler32_combine_(adler1, adler2, len2);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/zutil.c
|
/* zutil.c -- target dependent utility functions for the compression library
* Copyright (C) 1995-2017 Jean-loup Gailly
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#include "zutil.h"
#ifndef Z_SOLO
# include "gzguts.h"
#endif
z_const char * const z_errmsg[10] = {
(z_const char *)"need dictionary", /* Z_NEED_DICT 2 */
(z_const char *)"stream end", /* Z_STREAM_END 1 */
(z_const char *)"", /* Z_OK 0 */
(z_const char *)"file error", /* Z_ERRNO (-1) */
(z_const char *)"stream error", /* Z_STREAM_ERROR (-2) */
(z_const char *)"data error", /* Z_DATA_ERROR (-3) */
(z_const char *)"insufficient memory", /* Z_MEM_ERROR (-4) */
(z_const char *)"buffer error", /* Z_BUF_ERROR (-5) */
(z_const char *)"incompatible version",/* Z_VERSION_ERROR (-6) */
(z_const char *)""
};
const char * ZEXPORT zlibVersion()
{
return ZLIB_VERSION;
}
uLong ZEXPORT zlibCompileFlags()
{
uLong flags;
flags = 0;
switch ((int)(sizeof(uInt))) {
case 2: break;
case 4: flags += 1; break;
case 8: flags += 2; break;
default: flags += 3;
}
switch ((int)(sizeof(uLong))) {
case 2: break;
case 4: flags += 1 << 2; break;
case 8: flags += 2 << 2; break;
default: flags += 3 << 2;
}
switch ((int)(sizeof(voidpf))) {
case 2: break;
case 4: flags += 1 << 4; break;
case 8: flags += 2 << 4; break;
default: flags += 3 << 4;
}
switch ((int)(sizeof(z_off_t))) {
case 2: break;
case 4: flags += 1 << 6; break;
case 8: flags += 2 << 6; break;
default: flags += 3 << 6;
}
#ifdef ZLIB_DEBUG
flags += 1 << 8;
#endif
#if defined(ASMV) || defined(ASMINF)
flags += 1 << 9;
#endif
#ifdef ZLIB_WINAPI
flags += 1 << 10;
#endif
#ifdef BUILDFIXED
flags += 1 << 12;
#endif
#ifdef DYNAMIC_CRC_TABLE
flags += 1 << 13;
#endif
#ifdef NO_GZCOMPRESS
flags += 1L << 16;
#endif
#ifdef NO_GZIP
flags += 1L << 17;
#endif
#ifdef PKZIP_BUG_WORKAROUND
flags += 1L << 20;
#endif
#ifdef FASTEST
flags += 1L << 21;
#endif
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
# ifdef NO_vsnprintf
flags += 1L << 25;
# ifdef HAS_vsprintf_void
flags += 1L << 26;
# endif
# else
# ifdef HAS_vsnprintf_void
flags += 1L << 26;
# endif
# endif
#else
flags += 1L << 24;
# ifdef NO_snprintf
flags += 1L << 25;
# ifdef HAS_sprintf_void
flags += 1L << 26;
# endif
# else
# ifdef HAS_snprintf_void
flags += 1L << 26;
# endif
# endif
#endif
return flags;
}
#ifdef ZLIB_DEBUG
#include <stdlib.h>
# ifndef verbose
# define verbose 0
# endif
int ZLIB_INTERNAL z_verbose = verbose;
void ZLIB_INTERNAL z_error (m)
char *m;
{
fprintf(stderr, "%s\n", m);
exit(1);
}
#endif
/* exported to allow conversion of error code to string for compress() and
* uncompress()
*/
const char * ZEXPORT zError(err)
int err;
{
return ERR_MSG(err);
}
#if defined(_WIN32_WCE)
/* The Microsoft C Run-Time Library for Windows CE doesn't have
* errno. We define it as a global variable to simplify porting.
* Its value is always 0 and should not be used.
*/
int errno = 0;
#endif
#ifndef HAVE_MEMCPY
void ZLIB_INTERNAL zmemcpy(dest, source, len)
Bytef* dest;
const Bytef* source;
uInt len;
{
if (len == 0) return;
do {
*dest++ = *source++; /* ??? to be unrolled */
} while (--len != 0);
}
int ZLIB_INTERNAL zmemcmp(s1, s2, len)
const Bytef* s1;
const Bytef* s2;
uInt len;
{
uInt j;
for (j = 0; j < len; j++) {
if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;
}
return 0;
}
void ZLIB_INTERNAL zmemzero(dest, len)
Bytef* dest;
uInt len;
{
if (len == 0) return;
do {
*dest++ = 0; /* ??? to be unrolled */
} while (--len != 0);
}
#endif
#ifndef Z_SOLO
#ifdef SYS16BIT
#ifdef __TURBOC__
/* Turbo C in 16-bit mode */
# define MY_ZCALLOC
/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
* and farmalloc(64K) returns a pointer with an offset of 8, so we
* must fix the pointer. Warning: the pointer must be put back to its
* original form in order to free it, use zcfree().
*/
#define MAX_PTR 10
/* 10*64K = 640K */
local int next_ptr = 0;
typedef struct ptr_table_s {
voidpf org_ptr;
voidpf new_ptr;
} ptr_table;
local ptr_table table[MAX_PTR];
/* This table is used to remember the original form of pointers
* to large buffers (64K). Such pointers are normalized with a zero offset.
* Since MSDOS is not a preemptive multitasking OS, this table is not
* protected from concurrent access. This hack doesn't work anyway on
* a protected system like OS/2. Use Microsoft C instead.
*/
voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
{
voidpf buf;
ulg bsize = (ulg)items*size;
(void)opaque;
/* If we allocate less than 65520 bytes, we assume that farmalloc
* will return a usable pointer which doesn't have to be normalized.
*/
if (bsize < 65520L) {
buf = farmalloc(bsize);
if (*(ush*)&buf != 0) return buf;
} else {
buf = farmalloc(bsize + 16L);
}
if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
table[next_ptr].org_ptr = buf;
/* Normalize the pointer to seg:0 */
*((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;
*(ush*)&buf = 0;
table[next_ptr++].new_ptr = buf;
return buf;
}
void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
{
int n;
(void)opaque;
if (*(ush*)&ptr != 0) { /* object < 64K */
farfree(ptr);
return;
}
/* Find the original pointer */
for (n = 0; n < next_ptr; n++) {
if (ptr != table[n].new_ptr) continue;
farfree(table[n].org_ptr);
while (++n < next_ptr) {
table[n-1] = table[n];
}
next_ptr--;
return;
}
Assert(0, "zcfree: ptr not found");
}
#endif /* __TURBOC__ */
#ifdef M_I86
/* Microsoft C in 16-bit mode */
# define MY_ZCALLOC
#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
# define _halloc halloc
# define _hfree hfree
#endif
voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)
{
(void)opaque;
return _halloc((long)items, size);
}
void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
{
(void)opaque;
_hfree(ptr);
}
#endif /* M_I86 */
#endif /* SYS16BIT */
#ifndef MY_ZCALLOC /* Any system without a special alloc function */
#ifndef STDC
extern voidp malloc OF((uInt size));
extern voidp calloc OF((uInt items, uInt size));
extern void free OF((voidpf ptr));
#endif
voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
voidpf opaque;
unsigned items;
unsigned size;
{
(void)opaque;
return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
(voidpf)calloc(items, size);
}
void ZLIB_INTERNAL zcfree (opaque, ptr)
voidpf opaque;
voidpf ptr;
{
(void)opaque;
free(ptr);
}
#endif /* MY_ZCALLOC */
#endif /* !Z_SOLO */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/crc32.c
|
/* crc32.c -- compute the CRC-32 of a data stream
* Copyright (C) 1995-2006, 2010, 2011, 2012, 2016 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*
* Thanks to Rodney Brown <[email protected]> for his contribution of faster
* CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing
* tables for updating the shift register in one step with three exclusive-ors
* instead of four steps with four exclusive-ors. This results in about a
* factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.
*/
/* @(#) $Id$ */
/*
Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore
protection on the static variables used to control the first-use generation
of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should
first call get_crc_table() to initialize the tables before allowing more than
one thread to use crc32().
DYNAMIC_CRC_TABLE and MAKECRCH can be #defined to write out crc32.h.
*/
#ifdef MAKECRCH
# include <stdio.h>
# ifndef DYNAMIC_CRC_TABLE
# define DYNAMIC_CRC_TABLE
# endif /* !DYNAMIC_CRC_TABLE */
#endif /* MAKECRCH */
#include "zutil.h" /* for STDC and FAR definitions */
/* Definitions for doing the crc four data bytes at a time. */
#if !defined(NOBYFOUR) && defined(Z_U4)
# define BYFOUR
#endif
#ifdef BYFOUR
local unsigned long crc32_little OF((unsigned long,
const unsigned char FAR *, z_size_t));
local unsigned long crc32_big OF((unsigned long,
const unsigned char FAR *, z_size_t));
# define TBLS 8
#else
# define TBLS 1
#endif /* BYFOUR */
/* Local functions for crc concatenation */
local unsigned long gf2_matrix_times OF((unsigned long *mat,
unsigned long vec));
local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));
local uLong crc32_combine_ OF((uLong crc1, uLong crc2, z_off64_t len2));
#ifdef DYNAMIC_CRC_TABLE
local volatile int crc_table_empty = 1;
local z_crc_t FAR crc_table[TBLS][256];
local void make_crc_table OF((void));
#ifdef MAKECRCH
local void write_table OF((FILE *, const z_crc_t FAR *));
#endif /* MAKECRCH */
/*
Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.
Polynomials over GF(2) are represented in binary, one bit per coefficient,
with the lowest powers in the most significant bit. Then adding polynomials
is just exclusive-or, and multiplying a polynomial by x is a right shift by
one. If we call the above polynomial p, and represent a byte as the
polynomial q, also with the lowest power in the most significant bit (so the
byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p,
where a mod b means the remainder after dividing a by b.
This calculation is done using the shift-register method of multiplying and
taking the remainder. The register is initialized to zero, and for each
incoming bit, x^32 is added mod p to the register if the bit is a one (where
x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by
x (which is shifting right by one and adding x^32 mod p if the bit shifted
out is a one). We start with the highest power (least significant bit) of
q and repeat for all eight bits of q.
The first table is simply the CRC of all possible eight bit values. This is
all the information needed to generate CRCs on data a byte at a time for all
combinations of CRC register values and incoming bytes. The remaining tables
allow for word-at-a-time CRC calculation for both big-endian and little-
endian machines, where a word is four bytes.
*/
local void make_crc_table()
{
z_crc_t c;
int n, k;
z_crc_t poly; /* polynomial exclusive-or pattern */
/* terms of polynomial defining this crc (except x^32): */
static volatile int first = 1; /* flag to limit concurrent making */
static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26};
/* See if another task is already doing this (not thread-safe, but better
than nothing -- significantly reduces duration of vulnerability in
case the advice about DYNAMIC_CRC_TABLE is ignored) */
if (first) {
first = 0;
/* make exclusive-or pattern from polynomial (0xedb88320UL) */
poly = 0;
for (n = 0; n < (int)(sizeof(p)/sizeof(unsigned char)); n++)
poly |= (z_crc_t)1 << (31 - p[n]);
/* generate a crc for every 8-bit value */
for (n = 0; n < 256; n++) {
c = (z_crc_t)n;
for (k = 0; k < 8; k++)
c = c & 1 ? poly ^ (c >> 1) : c >> 1;
crc_table[0][n] = c;
}
#ifdef BYFOUR
/* generate crc for each value followed by one, two, and three zeros,
and then the byte reversal of those as well as the first table */
for (n = 0; n < 256; n++) {
c = crc_table[0][n];
crc_table[4][n] = ZSWAP32(c);
for (k = 1; k < 4; k++) {
c = crc_table[0][c & 0xff] ^ (c >> 8);
crc_table[k][n] = c;
crc_table[k + 4][n] = ZSWAP32(c);
}
}
#endif /* BYFOUR */
crc_table_empty = 0;
}
else { /* not first */
/* wait for the other guy to finish (not efficient, but rare) */
while (crc_table_empty)
;
}
#ifdef MAKECRCH
/* write out CRC tables to crc32.h */
{
FILE *out;
out = fopen("crc32.h", "w");
if (out == NULL) return;
fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n");
fprintf(out, " * Generated automatically by crc32.c\n */\n\n");
fprintf(out, "local const z_crc_t FAR ");
fprintf(out, "crc_table[TBLS][256] =\n{\n {\n");
write_table(out, crc_table[0]);
# ifdef BYFOUR
fprintf(out, "#ifdef BYFOUR\n");
for (k = 1; k < 8; k++) {
fprintf(out, " },\n {\n");
write_table(out, crc_table[k]);
}
fprintf(out, "#endif\n");
# endif /* BYFOUR */
fprintf(out, " }\n};\n");
fclose(out);
}
#endif /* MAKECRCH */
}
#ifdef MAKECRCH
local void write_table(out, table)
FILE *out;
const z_crc_t FAR *table;
{
int n;
for (n = 0; n < 256; n++)
fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ",
(unsigned long)(table[n]),
n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", "));
}
#endif /* MAKECRCH */
#else /* !DYNAMIC_CRC_TABLE */
/* ========================================================================
* Tables of CRC-32s of all single-byte values, made by make_crc_table().
*/
#include "crc32.h"
#endif /* DYNAMIC_CRC_TABLE */
/* =========================================================================
* This function can be used by asm versions of crc32()
*/
const z_crc_t FAR * ZEXPORT get_crc_table()
{
#ifdef DYNAMIC_CRC_TABLE
if (crc_table_empty)
make_crc_table();
#endif /* DYNAMIC_CRC_TABLE */
return (const z_crc_t FAR *)crc_table;
}
/* ========================================================================= */
#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8)
#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1
/* ========================================================================= */
unsigned long ZEXPORT crc32_z(crc, buf, len)
unsigned long crc;
const unsigned char FAR *buf;
z_size_t len;
{
if (buf == Z_NULL) return 0UL;
#ifdef DYNAMIC_CRC_TABLE
if (crc_table_empty)
make_crc_table();
#endif /* DYNAMIC_CRC_TABLE */
#ifdef BYFOUR
if (sizeof(void *) == sizeof(ptrdiff_t)) {
z_crc_t endian;
endian = 1;
if (*((unsigned char *)(&endian)))
return crc32_little(crc, buf, len);
else
return crc32_big(crc, buf, len);
}
#endif /* BYFOUR */
crc = crc ^ 0xffffffffUL;
while (len >= 8) {
DO8;
len -= 8;
}
if (len) do {
DO1;
} while (--len);
return crc ^ 0xffffffffUL;
}
/* ========================================================================= */
unsigned long ZEXPORT crc32(crc, buf, len)
unsigned long crc;
const unsigned char FAR *buf;
uInt len;
{
return crc32_z(crc, buf, len);
}
#ifdef BYFOUR
/*
This BYFOUR code accesses the passed unsigned char * buffer with a 32-bit
integer pointer type. This violates the strict aliasing rule, where a
compiler can assume, for optimization purposes, that two pointers to
fundamentally different types won't ever point to the same memory. This can
manifest as a problem only if one of the pointers is written to. This code
only reads from those pointers. So long as this code remains isolated in
this compilation unit, there won't be a problem. For this reason, this code
should not be copied and pasted into a compilation unit in which other code
writes to the buffer that is passed to these routines.
*/
/* ========================================================================= */
#define DOLIT4 c ^= *buf4++; \
c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \
crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24]
#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4
/* ========================================================================= */
local unsigned long crc32_little(crc, buf, len)
unsigned long crc;
const unsigned char FAR *buf;
z_size_t len;
{
register z_crc_t c;
register const z_crc_t FAR *buf4;
c = (z_crc_t)crc;
c = ~c;
while (len && ((ptrdiff_t)buf & 3)) {
c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
len--;
}
buf4 = (const z_crc_t FAR *)(const void FAR *)buf;
while (len >= 32) {
DOLIT32;
len -= 32;
}
while (len >= 4) {
DOLIT4;
len -= 4;
}
buf = (const unsigned char FAR *)buf4;
if (len) do {
c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
} while (--len);
c = ~c;
return (unsigned long)c;
}
/* ========================================================================= */
#define DOBIG4 c ^= *buf4++; \
c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \
crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24]
#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4
/* ========================================================================= */
local unsigned long crc32_big(crc, buf, len)
unsigned long crc;
const unsigned char FAR *buf;
z_size_t len;
{
register z_crc_t c;
register const z_crc_t FAR *buf4;
c = ZSWAP32((z_crc_t)crc);
c = ~c;
while (len && ((ptrdiff_t)buf & 3)) {
c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
len--;
}
buf4 = (const z_crc_t FAR *)(const void FAR *)buf;
while (len >= 32) {
DOBIG32;
len -= 32;
}
while (len >= 4) {
DOBIG4;
len -= 4;
}
buf = (const unsigned char FAR *)buf4;
if (len) do {
c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
} while (--len);
c = ~c;
return (unsigned long)(ZSWAP32(c));
}
#endif /* BYFOUR */
#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */
/* ========================================================================= */
local unsigned long gf2_matrix_times(mat, vec)
unsigned long *mat;
unsigned long vec;
{
unsigned long sum;
sum = 0;
while (vec) {
if (vec & 1)
sum ^= *mat;
vec >>= 1;
mat++;
}
return sum;
}
/* ========================================================================= */
local void gf2_matrix_square(square, mat)
unsigned long *square;
unsigned long *mat;
{
int n;
for (n = 0; n < GF2_DIM; n++)
square[n] = gf2_matrix_times(mat, mat[n]);
}
/* ========================================================================= */
local uLong crc32_combine_(crc1, crc2, len2)
uLong crc1;
uLong crc2;
z_off64_t len2;
{
int n;
unsigned long row;
unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */
unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */
/* degenerate case (also disallow negative lengths) */
if (len2 <= 0)
return crc1;
/* put operator for one zero bit in odd */
odd[0] = 0xedb88320UL; /* CRC-32 polynomial */
row = 1;
for (n = 1; n < GF2_DIM; n++) {
odd[n] = row;
row <<= 1;
}
/* put operator for two zero bits in even */
gf2_matrix_square(even, odd);
/* put operator for four zero bits in odd */
gf2_matrix_square(odd, even);
/* apply len2 zeros to crc1 (first square will put the operator for one
zero byte, eight zero bits, in even) */
do {
/* apply zeros operator for this bit of len2 */
gf2_matrix_square(even, odd);
if (len2 & 1)
crc1 = gf2_matrix_times(even, crc1);
len2 >>= 1;
/* if no more bits set, then done */
if (len2 == 0)
break;
/* another iteration of the loop with odd and even swapped */
gf2_matrix_square(odd, even);
if (len2 & 1)
crc1 = gf2_matrix_times(odd, crc1);
len2 >>= 1;
/* if no more bits set, then done */
} while (len2 != 0);
/* return combined crc */
crc1 ^= crc2;
return crc1;
}
/* ========================================================================= */
uLong ZEXPORT crc32_combine(crc1, crc2, len2)
uLong crc1;
uLong crc2;
z_off_t len2;
{
return crc32_combine_(crc1, crc2, len2);
}
|
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/inffast.c
|
/* inffast.c -- fast decoding
* Copyright (C) 1995-2017 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"
#ifdef ASMINF
# pragma message("Assembler code may have bugs -- use at your own risk")
#else
/*
Decode literal, length, and distance codes and write out the resulting
literal and match bytes until either not enough input or output is
available, an end-of-block is encountered, or a data error is encountered.
When large enough input and output buffers are supplied to inflate(), for
example, a 16K input buffer and a 64K output buffer, more than 95% of the
inflate execution time is spent in this routine.
Entry assumptions:
state->mode == LEN
strm->avail_in >= 6
strm->avail_out >= 258
start >= strm->avail_out
state->bits < 8
On return, state->mode is one of:
LEN -- ran out of enough output space or enough available input
TYPE -- reached end of block code, inflate() to interpret next block
BAD -- error in block data
Notes:
- The maximum input bits used by a length/distance pair is 15 bits for the
length code, 5 bits for the length extra, 15 bits for the distance code,
and 13 bits for the distance extra. This totals 48 bits, or six bytes.
Therefore if strm->avail_in >= 6, then there is enough input to avoid
checking for available input while decoding.
- The maximum bytes that a single length/distance pair can output is 258
bytes, which is the maximum length that can be coded. inflate_fast()
requires strm->avail_out >= 258 for each loop to avoid checking for
output space.
*/
void ZLIB_INTERNAL inflate_fast(strm, start)
z_streamp strm;
unsigned start; /* inflate()'s starting value for strm->avail_out */
{
struct inflate_state FAR *state;
z_const unsigned char FAR *in; /* local strm->next_in */
z_const unsigned char FAR *last; /* have enough input while in < last */
unsigned char FAR *out; /* local strm->next_out */
unsigned char FAR *beg; /* inflate()'s initial strm->next_out */
unsigned char FAR *end; /* while out < end, enough space available */
#ifdef INFLATE_STRICT
unsigned dmax; /* maximum distance from zlib header */
#endif
unsigned wsize; /* window size or zero if not using window */
unsigned whave; /* valid bytes in the window */
unsigned wnext; /* window write index */
unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */
unsigned long hold; /* local strm->hold */
unsigned bits; /* local strm->bits */
code const FAR *lcode; /* local strm->lencode */
code const FAR *dcode; /* local strm->distcode */
unsigned lmask; /* mask for first level of length codes */
unsigned dmask; /* mask for first level of distance codes */
code here; /* retrieved table entry */
unsigned op; /* code bits, operation, extra bits, or */
/* window position, window bytes to copy */
unsigned len; /* match length, unused bytes */
unsigned dist; /* match distance */
unsigned char FAR *from; /* where to copy match from */
/* copy state to local variables */
state = (struct inflate_state FAR *)strm->state;
in = strm->next_in;
last = in + (strm->avail_in - 5);
out = strm->next_out;
beg = out - (start - strm->avail_out);
end = out + (strm->avail_out - 257);
#ifdef INFLATE_STRICT
dmax = state->dmax;
#endif
wsize = state->wsize;
whave = state->whave;
wnext = state->wnext;
window = state->window;
hold = state->hold;
bits = state->bits;
lcode = state->lencode;
dcode = state->distcode;
lmask = (1U << state->lenbits) - 1;
dmask = (1U << state->distbits) - 1;
/* decode literals and length/distances until end-of-block or not enough
input data or output space */
do {
if (bits < 15) {
hold += (unsigned long)(*in++) << bits;
bits += 8;
hold += (unsigned long)(*in++) << bits;
bits += 8;
}
here = lcode[hold & lmask];
dolen:
op = (unsigned)(here.bits);
hold >>= op;
bits -= op;
op = (unsigned)(here.op);
if (op == 0) { /* literal */
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
"inflate: literal '%c'\n" :
"inflate: literal 0x%02x\n", here.val));
*out++ = (unsigned char)(here.val);
}
else if (op & 16) { /* length base */
len = (unsigned)(here.val);
op &= 15; /* number of extra bits */
if (op) {
if (bits < op) {
hold += (unsigned long)(*in++) << bits;
bits += 8;
}
len += (unsigned)hold & ((1U << op) - 1);
hold >>= op;
bits -= op;
}
Tracevv((stderr, "inflate: length %u\n", len));
if (bits < 15) {
hold += (unsigned long)(*in++) << bits;
bits += 8;
hold += (unsigned long)(*in++) << bits;
bits += 8;
}
here = dcode[hold & dmask];
dodist:
op = (unsigned)(here.bits);
hold >>= op;
bits -= op;
op = (unsigned)(here.op);
if (op & 16) { /* distance base */
dist = (unsigned)(here.val);
op &= 15; /* number of extra bits */
if (bits < op) {
hold += (unsigned long)(*in++) << bits;
bits += 8;
if (bits < op) {
hold += (unsigned long)(*in++) << bits;
bits += 8;
}
}
dist += (unsigned)hold & ((1U << op) - 1);
#ifdef INFLATE_STRICT
if (dist > dmax) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
break;
}
#endif
hold >>= op;
bits -= op;
Tracevv((stderr, "inflate: distance %u\n", dist));
op = (unsigned)(out - beg); /* max distance in output */
if (dist > op) { /* see if copy from window */
op = dist - op; /* distance back in window */
if (op > whave) {
if (state->sane) {
strm->msg =
(char *)"invalid distance too far back";
state->mode = BAD;
break;
}
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
if (len <= op - whave) {
do {
*out++ = 0;
} while (--len);
continue;
}
len -= op - whave;
do {
*out++ = 0;
} while (--op > whave);
if (op == 0) {
from = out - dist;
do {
*out++ = *from++;
} while (--len);
continue;
}
#endif
}
from = window;
if (wnext == 0) { /* very common case */
from += wsize - op;
if (op < len) { /* some from window */
len -= op;
do {
*out++ = *from++;
} while (--op);
from = out - dist; /* rest from output */
}
}
else if (wnext < op) { /* wrap around window */
from += wsize + wnext - op;
op -= wnext;
if (op < len) { /* some from end of window */
len -= op;
do {
*out++ = *from++;
} while (--op);
from = window;
if (wnext < len) { /* some from start of window */
op = wnext;
len -= op;
do {
*out++ = *from++;
} while (--op);
from = out - dist; /* rest from output */
}
}
}
else { /* contiguous in window */
from += wnext - op;
if (op < len) { /* some from window */
len -= op;
do {
*out++ = *from++;
} while (--op);
from = out - dist; /* rest from output */
}
}
while (len > 2) {
*out++ = *from++;
*out++ = *from++;
*out++ = *from++;
len -= 3;
}
if (len) {
*out++ = *from++;
if (len > 1)
*out++ = *from++;
}
}
else {
from = out - dist; /* copy direct from output */
do { /* minimum length is three */
*out++ = *from++;
*out++ = *from++;
*out++ = *from++;
len -= 3;
} while (len > 2);
if (len) {
*out++ = *from++;
if (len > 1)
*out++ = *from++;
}
}
}
else if ((op & 64) == 0) { /* 2nd level distance code */
here = dcode[here.val + (hold & ((1U << op) - 1))];
goto dodist;
}
else {
strm->msg = (char *)"invalid distance code";
state->mode = BAD;
break;
}
}
else if ((op & 64) == 0) { /* 2nd level length code */
here = lcode[here.val + (hold & ((1U << op) - 1))];
goto dolen;
}
else if (op & 32) { /* end-of-block */
Tracevv((stderr, "inflate: end of block\n"));
state->mode = TYPE;
break;
}
else {
strm->msg = (char *)"invalid literal/length code";
state->mode = BAD;
break;
}
} while (in < last && out < end);
/* return unused bytes (on entry, bits < 8, so in won't go too far back) */
len = bits >> 3;
in -= len;
bits -= len << 3;
hold &= (1U << bits) - 1;
/* update state and return */
strm->next_in = in;
strm->next_out = out;
strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));
strm->avail_out = (unsigned)(out < end ?
257 + (end - out) : 257 - (out - end));
state->hold = hold;
state->bits = bits;
return;
}
/*
inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
- Using bit fields for code structure
- Different op definition to avoid & for extra bits (do & for table bits)
- Three separate decoding do-loops for direct, window, and wnext == 0
- Special case for distance > 1 copies to do overlapped load and store copy
- Explicit branch predictions (based on measured branch probabilities)
- Deferring match copy and interspersed it with decoding subsequent codes
- Swapping literal/length else
- Swapping window/direct else
- Larger unrolled copy loops (three is about right)
- Moving len -= 3 statement into middle of loop
*/
#endif /* !ASMINF */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/zutil.h
|
/* zutil.h -- internal interface and configuration of the compression library
* Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* @(#) $Id$ */
#ifndef ZUTIL_H
#define ZUTIL_H
#ifdef HAVE_HIDDEN
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
# define ZLIB_INTERNAL
#endif
#include "zlib.h"
#if defined(STDC) && !defined(Z_SOLO)
# if !(defined(_WIN32_WCE) && defined(_MSC_VER))
# include <stddef.h>
# endif
# include <string.h>
# include <stdlib.h>
#endif
#ifdef Z_SOLO
typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */
#endif
#ifndef local
# define local static
#endif
/* since "static" is used to mean two completely different things in C, we
define "local" for the non-static meaning of "static", for readability
(compile with -Dlocal if your debugger can't find static symbols) */
typedef unsigned char uch;
typedef uch FAR uchf;
typedef unsigned short ush;
typedef ush FAR ushf;
typedef unsigned long ulg;
extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
/* (size given to avoid silly warnings with Visual C++) */
#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
#define ERR_RETURN(strm,err) \
return (strm->msg = ERR_MSG(err), (err))
/* To be used only when the state is known to be valid */
/* common constants */
#ifndef DEF_WBITS
# define DEF_WBITS MAX_WBITS
#endif
/* default windowBits for decompression. MAX_WBITS is for compression only */
#if MAX_MEM_LEVEL >= 8
# define DEF_MEM_LEVEL 8
#else
# define DEF_MEM_LEVEL MAX_MEM_LEVEL
#endif
/* default memLevel */
#define STORED_BLOCK 0
#define STATIC_TREES 1
#define DYN_TREES 2
/* The three kinds of block type */
#define MIN_MATCH 3
#define MAX_MATCH 258
/* The minimum and maximum match lengths */
#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
/* target dependencies */
#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
# define OS_CODE 0x00
# ifndef Z_SOLO
# if defined(__TURBOC__) || defined(__BORLANDC__)
# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
/* Allow compilation with ANSI keywords only enabled */
void _Cdecl farfree( void *block );
void *_Cdecl farmalloc( unsigned long nbytes );
# else
# include <alloc.h>
# endif
# else /* MSC or DJGPP */
# include <malloc.h>
# endif
# endif
#endif
#ifdef AMIGA
# define OS_CODE 1
#endif
#if defined(VAXC) || defined(VMS)
# define OS_CODE 2
# define F_OPEN(name, mode) \
fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
#endif
#ifdef __370__
# if __TARGET_LIB__ < 0x20000000
# define OS_CODE 4
# elif __TARGET_LIB__ < 0x40000000
# define OS_CODE 11
# else
# define OS_CODE 8
# endif
#endif
#if defined(ATARI) || defined(atarist)
# define OS_CODE 5
#endif
#ifdef OS2
# define OS_CODE 6
# if defined(M_I86) && !defined(Z_SOLO)
# include <malloc.h>
# endif
#endif
#if defined(MACOS) || defined(TARGET_OS_MAC)
# define OS_CODE 7
# ifndef Z_SOLO
# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
# include <unix.h> /* for fdopen */
# else
# ifndef fdopen
# define fdopen(fd,mode) NULL /* No fdopen() */
# endif
# endif
# endif
#endif
#ifdef __acorn
# define OS_CODE 13
#endif
#if defined(WIN32) && !defined(__CYGWIN__)
# define OS_CODE 10
#endif
#ifdef _BEOS_
# define OS_CODE 16
#endif
#ifdef __TOS_OS400__
# define OS_CODE 18
#endif
#ifdef __APPLE__
# define OS_CODE 19
#endif
#if defined(_BEOS_) || defined(RISCOS)
# define fdopen(fd,mode) NULL /* No fdopen() */
#endif
#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
# if defined(_WIN32_WCE)
# define fdopen(fd,mode) NULL /* No fdopen() */
# ifndef _PTRDIFF_T_DEFINED
typedef int ptrdiff_t;
# define _PTRDIFF_T_DEFINED
# endif
# else
# define fdopen(fd,type) _fdopen(fd,type)
# endif
#endif
#if defined(__BORLANDC__) && !defined(MSDOS)
#pragma warn -8004
#pragma warn -8008
#pragma warn -8066
#endif
/* provide prototypes for these when building zlib without LFS */
#if !defined(_WIN32) && \
(!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
#endif
/* common defaults */
#ifndef OS_CODE
# define OS_CODE 3 /* assume Unix */
#endif
#ifndef F_OPEN
# define F_OPEN(name, mode) fopen((name), (mode))
#endif
/* functions */
#if defined(pyr) || defined(Z_SOLO)
# define NO_MEMCPY
#endif
#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
/* Use our own functions for small and medium model with MSC <= 5.0.
* You may have to use the same strategy for Borland C (untested).
* The __SC__ check is for Symantec.
*/
# define NO_MEMCPY
#endif
#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
# define HAVE_MEMCPY
#endif
#ifdef HAVE_MEMCPY
# ifdef SMALL_MEDIUM /* MSDOS small or medium model */
# define zmemcpy _fmemcpy
# define zmemcmp _fmemcmp
# define zmemzero(dest, len) _fmemset(dest, 0, len)
# else
# define zmemcpy memcpy
# define zmemcmp memcmp
# define zmemzero(dest, len) memset(dest, 0, len)
# endif
#else
void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
#endif
/* Diagnostic functions */
#ifdef ZLIB_DEBUG
# include <stdio.h>
extern int ZLIB_INTERNAL z_verbose;
extern void ZLIB_INTERNAL z_error OF((char *m));
# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
# define Trace(x) {if (z_verbose>=0) fprintf x ;}
# define Tracev(x) {if (z_verbose>0) fprintf x ;}
# define Tracevv(x) {if (z_verbose>1) fprintf x ;}
# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
#else
# define Assert(cond,msg)
# define Trace(x)
# define Tracev(x)
# define Tracevv(x)
# define Tracec(c,x)
# define Tracecv(c,x)
#endif
#ifndef Z_SOLO
voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
unsigned size));
void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
#endif
#define ZALLOC(strm, items, size) \
(*((strm)->zalloc))((strm)->opaque, (items), (size))
#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
/* Reverse the bytes in a 32-bit value */
#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
(((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
#endif /* ZUTIL_H */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/inffixed.h
|
/* inffixed.h -- table for decoding fixed codes
* Generated automatically by makefixed().
*/
/* WARNING: this file should *not* be used by applications.
It is part of the implementation of this library and is
subject to change. Applications should only use zlib.h.
*/
static const code lenfix[512] = {
{96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
{0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
{0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
{0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
{0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
{21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
{0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
{0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
{18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
{0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
{0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
{0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
{20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
{0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
{0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
{0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
{16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
{0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
{0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
{0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
{0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
{0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
{0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
{0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
{17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
{0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
{0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
{0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
{19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
{0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
{0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
{0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
{16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
{0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
{0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
{0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
{0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
{20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
{0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
{0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
{17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
{0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
{0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
{0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
{20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
{0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
{0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
{0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
{16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
{0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
{0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
{0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
{0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
{0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
{0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
{0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
{16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
{0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
{0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
{0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
{19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
{0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
{0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
{0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
{16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
{0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
{0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
{0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
{0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
{64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
{0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
{0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
{18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
{0,9,255}
};
static const code distfix[32] = {
{16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
{21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
{18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
{19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
{16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
{22,5,193},{64,5,0}
};
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/crc32.h
|
/* crc32.h -- tables for rapid CRC calculation
* Generated automatically by crc32.c
*/
local const z_crc_t FAR crc_table[TBLS][256] =
{
{
0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
0x2d02ef8dUL
#ifdef BYFOUR
},
{
0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL,
0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL,
0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL,
0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL,
0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL,
0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL,
0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL,
0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL,
0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL,
0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL,
0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL,
0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL,
0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL,
0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL,
0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL,
0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL,
0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL,
0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL,
0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL,
0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL,
0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL,
0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL,
0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL,
0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL,
0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL,
0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL,
0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL,
0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL,
0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL,
0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL,
0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL,
0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL,
0xae07bce9UL, 0xb71c8da8UL, 0x9c31de6bUL, 0x852aef2aUL, 0xca6b79edUL,
0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL,
0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL,
0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL,
0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL,
0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL,
0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL,
0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL,
0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL,
0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL,
0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL,
0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL,
0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL,
0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL,
0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL,
0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL,
0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL,
0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL,
0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL,
0x9324fd72UL
},
{
0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL,
0x06cbc2ebUL, 0x048d7cb2UL, 0x054f1685UL, 0x0e1351b8UL, 0x0fd13b8fUL,
0x0d9785d6UL, 0x0c55efe1UL, 0x091af964UL, 0x08d89353UL, 0x0a9e2d0aUL,
0x0b5c473dUL, 0x1c26a370UL, 0x1de4c947UL, 0x1fa2771eUL, 0x1e601d29UL,
0x1b2f0bacUL, 0x1aed619bUL, 0x18abdfc2UL, 0x1969b5f5UL, 0x1235f2c8UL,
0x13f798ffUL, 0x11b126a6UL, 0x10734c91UL, 0x153c5a14UL, 0x14fe3023UL,
0x16b88e7aUL, 0x177ae44dUL, 0x384d46e0UL, 0x398f2cd7UL, 0x3bc9928eUL,
0x3a0bf8b9UL, 0x3f44ee3cUL, 0x3e86840bUL, 0x3cc03a52UL, 0x3d025065UL,
0x365e1758UL, 0x379c7d6fUL, 0x35dac336UL, 0x3418a901UL, 0x3157bf84UL,
0x3095d5b3UL, 0x32d36beaUL, 0x331101ddUL, 0x246be590UL, 0x25a98fa7UL,
0x27ef31feUL, 0x262d5bc9UL, 0x23624d4cUL, 0x22a0277bUL, 0x20e69922UL,
0x2124f315UL, 0x2a78b428UL, 0x2bbade1fUL, 0x29fc6046UL, 0x283e0a71UL,
0x2d711cf4UL, 0x2cb376c3UL, 0x2ef5c89aUL, 0x2f37a2adUL, 0x709a8dc0UL,
0x7158e7f7UL, 0x731e59aeUL, 0x72dc3399UL, 0x7793251cUL, 0x76514f2bUL,
0x7417f172UL, 0x75d59b45UL, 0x7e89dc78UL, 0x7f4bb64fUL, 0x7d0d0816UL,
0x7ccf6221UL, 0x798074a4UL, 0x78421e93UL, 0x7a04a0caUL, 0x7bc6cafdUL,
0x6cbc2eb0UL, 0x6d7e4487UL, 0x6f38fadeUL, 0x6efa90e9UL, 0x6bb5866cUL,
0x6a77ec5bUL, 0x68315202UL, 0x69f33835UL, 0x62af7f08UL, 0x636d153fUL,
0x612bab66UL, 0x60e9c151UL, 0x65a6d7d4UL, 0x6464bde3UL, 0x662203baUL,
0x67e0698dUL, 0x48d7cb20UL, 0x4915a117UL, 0x4b531f4eUL, 0x4a917579UL,
0x4fde63fcUL, 0x4e1c09cbUL, 0x4c5ab792UL, 0x4d98dda5UL, 0x46c49a98UL,
0x4706f0afUL, 0x45404ef6UL, 0x448224c1UL, 0x41cd3244UL, 0x400f5873UL,
0x4249e62aUL, 0x438b8c1dUL, 0x54f16850UL, 0x55330267UL, 0x5775bc3eUL,
0x56b7d609UL, 0x53f8c08cUL, 0x523aaabbUL, 0x507c14e2UL, 0x51be7ed5UL,
0x5ae239e8UL, 0x5b2053dfUL, 0x5966ed86UL, 0x58a487b1UL, 0x5deb9134UL,
0x5c29fb03UL, 0x5e6f455aUL, 0x5fad2f6dUL, 0xe1351b80UL, 0xe0f771b7UL,
0xe2b1cfeeUL, 0xe373a5d9UL, 0xe63cb35cUL, 0xe7fed96bUL, 0xe5b86732UL,
0xe47a0d05UL, 0xef264a38UL, 0xeee4200fUL, 0xeca29e56UL, 0xed60f461UL,
0xe82fe2e4UL, 0xe9ed88d3UL, 0xebab368aUL, 0xea695cbdUL, 0xfd13b8f0UL,
0xfcd1d2c7UL, 0xfe976c9eUL, 0xff5506a9UL, 0xfa1a102cUL, 0xfbd87a1bUL,
0xf99ec442UL, 0xf85cae75UL, 0xf300e948UL, 0xf2c2837fUL, 0xf0843d26UL,
0xf1465711UL, 0xf4094194UL, 0xf5cb2ba3UL, 0xf78d95faUL, 0xf64fffcdUL,
0xd9785d60UL, 0xd8ba3757UL, 0xdafc890eUL, 0xdb3ee339UL, 0xde71f5bcUL,
0xdfb39f8bUL, 0xddf521d2UL, 0xdc374be5UL, 0xd76b0cd8UL, 0xd6a966efUL,
0xd4efd8b6UL, 0xd52db281UL, 0xd062a404UL, 0xd1a0ce33UL, 0xd3e6706aUL,
0xd2241a5dUL, 0xc55efe10UL, 0xc49c9427UL, 0xc6da2a7eUL, 0xc7184049UL,
0xc25756ccUL, 0xc3953cfbUL, 0xc1d382a2UL, 0xc011e895UL, 0xcb4dafa8UL,
0xca8fc59fUL, 0xc8c97bc6UL, 0xc90b11f1UL, 0xcc440774UL, 0xcd866d43UL,
0xcfc0d31aUL, 0xce02b92dUL, 0x91af9640UL, 0x906dfc77UL, 0x922b422eUL,
0x93e92819UL, 0x96a63e9cUL, 0x976454abUL, 0x9522eaf2UL, 0x94e080c5UL,
0x9fbcc7f8UL, 0x9e7eadcfUL, 0x9c381396UL, 0x9dfa79a1UL, 0x98b56f24UL,
0x99770513UL, 0x9b31bb4aUL, 0x9af3d17dUL, 0x8d893530UL, 0x8c4b5f07UL,
0x8e0de15eUL, 0x8fcf8b69UL, 0x8a809decUL, 0x8b42f7dbUL, 0x89044982UL,
0x88c623b5UL, 0x839a6488UL, 0x82580ebfUL, 0x801eb0e6UL, 0x81dcdad1UL,
0x8493cc54UL, 0x8551a663UL, 0x8717183aUL, 0x86d5720dUL, 0xa9e2d0a0UL,
0xa820ba97UL, 0xaa6604ceUL, 0xaba46ef9UL, 0xaeeb787cUL, 0xaf29124bUL,
0xad6fac12UL, 0xacadc625UL, 0xa7f18118UL, 0xa633eb2fUL, 0xa4755576UL,
0xa5b73f41UL, 0xa0f829c4UL, 0xa13a43f3UL, 0xa37cfdaaUL, 0xa2be979dUL,
0xb5c473d0UL, 0xb40619e7UL, 0xb640a7beUL, 0xb782cd89UL, 0xb2cddb0cUL,
0xb30fb13bUL, 0xb1490f62UL, 0xb08b6555UL, 0xbbd72268UL, 0xba15485fUL,
0xb853f606UL, 0xb9919c31UL, 0xbcde8ab4UL, 0xbd1ce083UL, 0xbf5a5edaUL,
0xbe9834edUL
},
{
0x00000000UL, 0xb8bc6765UL, 0xaa09c88bUL, 0x12b5afeeUL, 0x8f629757UL,
0x37def032UL, 0x256b5fdcUL, 0x9dd738b9UL, 0xc5b428efUL, 0x7d084f8aUL,
0x6fbde064UL, 0xd7018701UL, 0x4ad6bfb8UL, 0xf26ad8ddUL, 0xe0df7733UL,
0x58631056UL, 0x5019579fUL, 0xe8a530faUL, 0xfa109f14UL, 0x42acf871UL,
0xdf7bc0c8UL, 0x67c7a7adUL, 0x75720843UL, 0xcdce6f26UL, 0x95ad7f70UL,
0x2d111815UL, 0x3fa4b7fbUL, 0x8718d09eUL, 0x1acfe827UL, 0xa2738f42UL,
0xb0c620acUL, 0x087a47c9UL, 0xa032af3eUL, 0x188ec85bUL, 0x0a3b67b5UL,
0xb28700d0UL, 0x2f503869UL, 0x97ec5f0cUL, 0x8559f0e2UL, 0x3de59787UL,
0x658687d1UL, 0xdd3ae0b4UL, 0xcf8f4f5aUL, 0x7733283fUL, 0xeae41086UL,
0x525877e3UL, 0x40edd80dUL, 0xf851bf68UL, 0xf02bf8a1UL, 0x48979fc4UL,
0x5a22302aUL, 0xe29e574fUL, 0x7f496ff6UL, 0xc7f50893UL, 0xd540a77dUL,
0x6dfcc018UL, 0x359fd04eUL, 0x8d23b72bUL, 0x9f9618c5UL, 0x272a7fa0UL,
0xbafd4719UL, 0x0241207cUL, 0x10f48f92UL, 0xa848e8f7UL, 0x9b14583dUL,
0x23a83f58UL, 0x311d90b6UL, 0x89a1f7d3UL, 0x1476cf6aUL, 0xaccaa80fUL,
0xbe7f07e1UL, 0x06c36084UL, 0x5ea070d2UL, 0xe61c17b7UL, 0xf4a9b859UL,
0x4c15df3cUL, 0xd1c2e785UL, 0x697e80e0UL, 0x7bcb2f0eUL, 0xc377486bUL,
0xcb0d0fa2UL, 0x73b168c7UL, 0x6104c729UL, 0xd9b8a04cUL, 0x446f98f5UL,
0xfcd3ff90UL, 0xee66507eUL, 0x56da371bUL, 0x0eb9274dUL, 0xb6054028UL,
0xa4b0efc6UL, 0x1c0c88a3UL, 0x81dbb01aUL, 0x3967d77fUL, 0x2bd27891UL,
0x936e1ff4UL, 0x3b26f703UL, 0x839a9066UL, 0x912f3f88UL, 0x299358edUL,
0xb4446054UL, 0x0cf80731UL, 0x1e4da8dfUL, 0xa6f1cfbaUL, 0xfe92dfecUL,
0x462eb889UL, 0x549b1767UL, 0xec277002UL, 0x71f048bbUL, 0xc94c2fdeUL,
0xdbf98030UL, 0x6345e755UL, 0x6b3fa09cUL, 0xd383c7f9UL, 0xc1366817UL,
0x798a0f72UL, 0xe45d37cbUL, 0x5ce150aeUL, 0x4e54ff40UL, 0xf6e89825UL,
0xae8b8873UL, 0x1637ef16UL, 0x048240f8UL, 0xbc3e279dUL, 0x21e91f24UL,
0x99557841UL, 0x8be0d7afUL, 0x335cb0caUL, 0xed59b63bUL, 0x55e5d15eUL,
0x47507eb0UL, 0xffec19d5UL, 0x623b216cUL, 0xda874609UL, 0xc832e9e7UL,
0x708e8e82UL, 0x28ed9ed4UL, 0x9051f9b1UL, 0x82e4565fUL, 0x3a58313aUL,
0xa78f0983UL, 0x1f336ee6UL, 0x0d86c108UL, 0xb53aa66dUL, 0xbd40e1a4UL,
0x05fc86c1UL, 0x1749292fUL, 0xaff54e4aUL, 0x322276f3UL, 0x8a9e1196UL,
0x982bbe78UL, 0x2097d91dUL, 0x78f4c94bUL, 0xc048ae2eUL, 0xd2fd01c0UL,
0x6a4166a5UL, 0xf7965e1cUL, 0x4f2a3979UL, 0x5d9f9697UL, 0xe523f1f2UL,
0x4d6b1905UL, 0xf5d77e60UL, 0xe762d18eUL, 0x5fdeb6ebUL, 0xc2098e52UL,
0x7ab5e937UL, 0x680046d9UL, 0xd0bc21bcUL, 0x88df31eaUL, 0x3063568fUL,
0x22d6f961UL, 0x9a6a9e04UL, 0x07bda6bdUL, 0xbf01c1d8UL, 0xadb46e36UL,
0x15080953UL, 0x1d724e9aUL, 0xa5ce29ffUL, 0xb77b8611UL, 0x0fc7e174UL,
0x9210d9cdUL, 0x2aacbea8UL, 0x38191146UL, 0x80a57623UL, 0xd8c66675UL,
0x607a0110UL, 0x72cfaefeUL, 0xca73c99bUL, 0x57a4f122UL, 0xef189647UL,
0xfdad39a9UL, 0x45115eccUL, 0x764dee06UL, 0xcef18963UL, 0xdc44268dUL,
0x64f841e8UL, 0xf92f7951UL, 0x41931e34UL, 0x5326b1daUL, 0xeb9ad6bfUL,
0xb3f9c6e9UL, 0x0b45a18cUL, 0x19f00e62UL, 0xa14c6907UL, 0x3c9b51beUL,
0x842736dbUL, 0x96929935UL, 0x2e2efe50UL, 0x2654b999UL, 0x9ee8defcUL,
0x8c5d7112UL, 0x34e11677UL, 0xa9362eceUL, 0x118a49abUL, 0x033fe645UL,
0xbb838120UL, 0xe3e09176UL, 0x5b5cf613UL, 0x49e959fdUL, 0xf1553e98UL,
0x6c820621UL, 0xd43e6144UL, 0xc68bceaaUL, 0x7e37a9cfUL, 0xd67f4138UL,
0x6ec3265dUL, 0x7c7689b3UL, 0xc4caeed6UL, 0x591dd66fUL, 0xe1a1b10aUL,
0xf3141ee4UL, 0x4ba87981UL, 0x13cb69d7UL, 0xab770eb2UL, 0xb9c2a15cUL,
0x017ec639UL, 0x9ca9fe80UL, 0x241599e5UL, 0x36a0360bUL, 0x8e1c516eUL,
0x866616a7UL, 0x3eda71c2UL, 0x2c6fde2cUL, 0x94d3b949UL, 0x090481f0UL,
0xb1b8e695UL, 0xa30d497bUL, 0x1bb12e1eUL, 0x43d23e48UL, 0xfb6e592dUL,
0xe9dbf6c3UL, 0x516791a6UL, 0xccb0a91fUL, 0x740cce7aUL, 0x66b96194UL,
0xde0506f1UL
},
{
0x00000000UL, 0x96300777UL, 0x2c610eeeUL, 0xba510999UL, 0x19c46d07UL,
0x8ff46a70UL, 0x35a563e9UL, 0xa395649eUL, 0x3288db0eUL, 0xa4b8dc79UL,
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0x911dbf90UL, 0x6410b71dUL, 0xf220b06aUL, 0x4871b9f3UL, 0xde41be84UL,
0x7dd4da1aUL, 0xebe4dd6dUL, 0x51b5d4f4UL, 0xc785d383UL, 0x56986c13UL,
0xc0a86b64UL, 0x7af962fdUL, 0xecc9658aUL, 0x4f5c0114UL, 0xd96c0663UL,
0x633d0ffaUL, 0xf50d088dUL, 0xc8206e3bUL, 0x5e10694cUL, 0xe44160d5UL,
0x727167a2UL, 0xd1e4033cUL, 0x47d4044bUL, 0xfd850dd2UL, 0x6bb50aa5UL,
0xfaa8b535UL, 0x6c98b242UL, 0xd6c9bbdbUL, 0x40f9bcacUL, 0xe36cd832UL,
0x755cdf45UL, 0xcf0dd6dcUL, 0x593dd1abUL, 0xac30d926UL, 0x3a00de51UL,
0x8051d7c8UL, 0x1661d0bfUL, 0xb5f4b421UL, 0x23c4b356UL, 0x9995bacfUL,
0x0fa5bdb8UL, 0x9eb80228UL, 0x0888055fUL, 0xb2d90cc6UL, 0x24e90bb1UL,
0x877c6f2fUL, 0x114c6858UL, 0xab1d61c1UL, 0x3d2d66b6UL, 0x9041dc76UL,
0x0671db01UL, 0xbc20d298UL, 0x2a10d5efUL, 0x8985b171UL, 0x1fb5b606UL,
0xa5e4bf9fUL, 0x33d4b8e8UL, 0xa2c90778UL, 0x34f9000fUL, 0x8ea80996UL,
0x18980ee1UL, 0xbb0d6a7fUL, 0x2d3d6d08UL, 0x976c6491UL, 0x015c63e6UL,
0xf4516b6bUL, 0x62616c1cUL, 0xd8306585UL, 0x4e0062f2UL, 0xed95066cUL,
0x7ba5011bUL, 0xc1f40882UL, 0x57c40ff5UL, 0xc6d9b065UL, 0x50e9b712UL,
0xeab8be8bUL, 0x7c88b9fcUL, 0xdf1ddd62UL, 0x492dda15UL, 0xf37cd38cUL,
0x654cd4fbUL, 0x5861b24dUL, 0xce51b53aUL, 0x7400bca3UL, 0xe230bbd4UL,
0x41a5df4aUL, 0xd795d83dUL, 0x6dc4d1a4UL, 0xfbf4d6d3UL, 0x6ae96943UL,
0xfcd96e34UL, 0x468867adUL, 0xd0b860daUL, 0x732d0444UL, 0xe51d0333UL,
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0x86200cc9UL, 0x25b56857UL, 0xb3856f20UL, 0x09d466b9UL, 0x9fe461ceUL,
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0xe8a3d6d6UL, 0x7e93d1a1UL, 0xc4c2d838UL, 0x52f2df4fUL, 0xf167bbd1UL,
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0x95770cccUL, 0x03470bbbUL, 0xb9160222UL, 0x2f260555UL, 0xbe3bbac5UL,
0x280bbdb2UL, 0x925ab42bUL, 0x046ab35cUL, 0xa7ffd7c2UL, 0x31cfd0b5UL,
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0x0a936d02UL, 0xa906099cUL, 0x3f360eebUL, 0x85670772UL, 0x13570005UL,
0x824abf95UL, 0x147ab8e2UL, 0xae2bb17bUL, 0x381bb60cUL, 0x9b8ed292UL,
0x0dbed5e5UL, 0xb7efdc7cUL, 0x21dfdb0bUL, 0xd4d2d386UL, 0x42e2d4f1UL,
0xf8b3dd68UL, 0x6e83da1fUL, 0xcd16be81UL, 0x5b26b9f6UL, 0xe177b06fUL,
0x7747b718UL, 0xe65a0888UL, 0x706a0fffUL, 0xca3b0666UL, 0x5c0b0111UL,
0xff9e658fUL, 0x69ae62f8UL, 0xd3ff6b61UL, 0x45cf6c16UL, 0x78e20aa0UL,
0xeed20dd7UL, 0x5483044eUL, 0xc2b30339UL, 0x612667a7UL, 0xf71660d0UL,
0x4d476949UL, 0xdb776e3eUL, 0x4a6ad1aeUL, 0xdc5ad6d9UL, 0x660bdf40UL,
0xf03bd837UL, 0x53aebca9UL, 0xc59ebbdeUL, 0x7fcfb247UL, 0xe9ffb530UL,
0x1cf2bdbdUL, 0x8ac2bacaUL, 0x3093b353UL, 0xa6a3b424UL, 0x0536d0baUL,
0x9306d7cdUL, 0x2957de54UL, 0xbf67d923UL, 0x2e7a66b3UL, 0xb84a61c4UL,
0x021b685dUL, 0x942b6f2aUL, 0x37be0bb4UL, 0xa18e0cc3UL, 0x1bdf055aUL,
0x8def022dUL
},
{
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0x45f4777dUL, 0x86a75a56UL, 0xc796414fUL, 0x088ad9c8UL, 0x49bbc2d1UL,
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0xef5a2a20UL, 0x2c09070bUL, 0x6d381c12UL, 0xf33646dfUL, 0xb2075dc6UL,
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0x34a00790UL, 0xfbbc9f17UL, 0xba8d840eUL, 0x79dea925UL, 0x38efb23cUL,
0xff79f373UL, 0xbe48e86aUL, 0x7d1bc541UL, 0x3c2ade58UL, 0x054f79f0UL,
0x447e62e9UL, 0x872d4fc2UL, 0xc61c54dbUL, 0x018a1594UL, 0x40bb0e8dUL,
0x83e823a6UL, 0xc2d938bfUL, 0x0dc5a038UL, 0x4cf4bb21UL, 0x8fa7960aUL,
0xce968d13UL, 0x0900cc5cUL, 0x4831d745UL, 0x8b62fa6eUL, 0xca53e177UL,
0x545dbbbaUL, 0x156ca0a3UL, 0xd63f8d88UL, 0x970e9691UL, 0x5098d7deUL,
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0xdeb55440UL, 0x9f844f59UL, 0x58120e16UL, 0x1923150fUL, 0xda703824UL,
0x9b41233dUL, 0xa76bfd65UL, 0xe65ae67cUL, 0x2509cb57UL, 0x6438d04eUL,
0xa3ae9101UL, 0xe29f8a18UL, 0x21cca733UL, 0x60fdbc2aUL, 0xafe124adUL,
0xeed03fb4UL, 0x2d83129fUL, 0x6cb20986UL, 0xab2448c9UL, 0xea1553d0UL,
0x29467efbUL, 0x687765e2UL, 0xf6793f2fUL, 0xb7482436UL, 0x741b091dUL,
0x352a1204UL, 0xf2bc534bUL, 0xb38d4852UL, 0x70de6579UL, 0x31ef7e60UL,
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0xbb07919aUL, 0x7854bcb1UL, 0x3965a7a8UL, 0x4b98833bUL, 0x0aa99822UL,
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0x8c0ec274UL, 0x43125af3UL, 0x022341eaUL, 0xc1706cc1UL, 0x804177d8UL,
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0xd153b592UL, 0x16c5f4ddUL, 0x57f4efc4UL, 0x94a7c2efUL, 0xd596d9f6UL,
0xe9bc07aeUL, 0xa88d1cb7UL, 0x6bde319cUL, 0x2aef2a85UL, 0xed796bcaUL,
0xac4870d3UL, 0x6f1b5df8UL, 0x2e2a46e1UL, 0xe136de66UL, 0xa007c57fUL,
0x6354e854UL, 0x2265f34dUL, 0xe5f3b202UL, 0xa4c2a91bUL, 0x67918430UL,
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0xbc6ba980UL, 0xfd5ab299UL, 0x3e099fb2UL, 0x7f3884abUL, 0xb0241c2cUL,
0xf1150735UL, 0x32462a1eUL, 0x73773107UL, 0xb4e17048UL, 0xf5d06b51UL,
0x3683467aUL, 0x77b25d63UL, 0x4ed7facbUL, 0x0fe6e1d2UL, 0xccb5ccf9UL,
0x8d84d7e0UL, 0x4a1296afUL, 0x0b238db6UL, 0xc870a09dUL, 0x8941bb84UL,
0x465d2303UL, 0x076c381aUL, 0xc43f1531UL, 0x850e0e28UL, 0x42984f67UL,
0x03a9547eUL, 0xc0fa7955UL, 0x81cb624cUL, 0x1fc53881UL, 0x5ef42398UL,
0x9da70eb3UL, 0xdc9615aaUL, 0x1b0054e5UL, 0x5a314ffcUL, 0x996262d7UL,
0xd85379ceUL, 0x174fe149UL, 0x567efa50UL, 0x952dd77bUL, 0xd41ccc62UL,
0x138a8d2dUL, 0x52bb9634UL, 0x91e8bb1fUL, 0xd0d9a006UL, 0xecf37e5eUL,
0xadc26547UL, 0x6e91486cUL, 0x2fa05375UL, 0xe836123aUL, 0xa9070923UL,
0x6a542408UL, 0x2b653f11UL, 0xe479a796UL, 0xa548bc8fUL, 0x661b91a4UL,
0x272a8abdUL, 0xe0bccbf2UL, 0xa18dd0ebUL, 0x62defdc0UL, 0x23efe6d9UL,
0xbde1bc14UL, 0xfcd0a70dUL, 0x3f838a26UL, 0x7eb2913fUL, 0xb924d070UL,
0xf815cb69UL, 0x3b46e642UL, 0x7a77fd5bUL, 0xb56b65dcUL, 0xf45a7ec5UL,
0x370953eeUL, 0x763848f7UL, 0xb1ae09b8UL, 0xf09f12a1UL, 0x33cc3f8aUL,
0x72fd2493UL
},
{
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0xebc2cb06UL, 0xb27c8d04UL, 0x85164f05UL, 0xb851130eUL, 0x8f3bd10fUL,
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0x3d475c0bUL, 0x70a3261cUL, 0x47c9e41dUL, 0x1e77a21fUL, 0x291d601eUL,
0xac0b2f1bUL, 0x9b61ed1aUL, 0xc2dfab18UL, 0xf5b56919UL, 0xc8f23512UL,
0xff98f713UL, 0xa626b111UL, 0x914c7310UL, 0x145a3c15UL, 0x2330fe14UL,
0x7a8eb816UL, 0x4de47a17UL, 0xe0464d38UL, 0xd72c8f39UL, 0x8e92c93bUL,
0xb9f80b3aUL, 0x3cee443fUL, 0x0b84863eUL, 0x523ac03cUL, 0x6550023dUL,
0x58175e36UL, 0x6f7d9c37UL, 0x36c3da35UL, 0x01a91834UL, 0x84bf5731UL,
0xb3d59530UL, 0xea6bd332UL, 0xdd011133UL, 0x90e56b24UL, 0xa78fa925UL,
0xfe31ef27UL, 0xc95b2d26UL, 0x4c4d6223UL, 0x7b27a022UL, 0x2299e620UL,
0x15f32421UL, 0x28b4782aUL, 0x1fdeba2bUL, 0x4660fc29UL, 0x710a3e28UL,
0xf41c712dUL, 0xc376b32cUL, 0x9ac8f52eUL, 0xada2372fUL, 0xc08d9a70UL,
0xf7e75871UL, 0xae591e73UL, 0x9933dc72UL, 0x1c259377UL, 0x2b4f5176UL,
0x72f11774UL, 0x459bd575UL, 0x78dc897eUL, 0x4fb64b7fUL, 0x16080d7dUL,
0x2162cf7cUL, 0xa4748079UL, 0x931e4278UL, 0xcaa0047aUL, 0xfdcac67bUL,
0xb02ebc6cUL, 0x87447e6dUL, 0xdefa386fUL, 0xe990fa6eUL, 0x6c86b56bUL,
0x5bec776aUL, 0x02523168UL, 0x3538f369UL, 0x087faf62UL, 0x3f156d63UL,
0x66ab2b61UL, 0x51c1e960UL, 0xd4d7a665UL, 0xe3bd6464UL, 0xba032266UL,
0x8d69e067UL, 0x20cbd748UL, 0x17a11549UL, 0x4e1f534bUL, 0x7975914aUL,
0xfc63de4fUL, 0xcb091c4eUL, 0x92b75a4cUL, 0xa5dd984dUL, 0x989ac446UL,
0xaff00647UL, 0xf64e4045UL, 0xc1248244UL, 0x4432cd41UL, 0x73580f40UL,
0x2ae64942UL, 0x1d8c8b43UL, 0x5068f154UL, 0x67023355UL, 0x3ebc7557UL,
0x09d6b756UL, 0x8cc0f853UL, 0xbbaa3a52UL, 0xe2147c50UL, 0xd57ebe51UL,
0xe839e25aUL, 0xdf53205bUL, 0x86ed6659UL, 0xb187a458UL, 0x3491eb5dUL,
0x03fb295cUL, 0x5a456f5eUL, 0x6d2fad5fUL, 0x801b35e1UL, 0xb771f7e0UL,
0xeecfb1e2UL, 0xd9a573e3UL, 0x5cb33ce6UL, 0x6bd9fee7UL, 0x3267b8e5UL,
0x050d7ae4UL, 0x384a26efUL, 0x0f20e4eeUL, 0x569ea2ecUL, 0x61f460edUL,
0xe4e22fe8UL, 0xd388ede9UL, 0x8a36abebUL, 0xbd5c69eaUL, 0xf0b813fdUL,
0xc7d2d1fcUL, 0x9e6c97feUL, 0xa90655ffUL, 0x2c101afaUL, 0x1b7ad8fbUL,
0x42c49ef9UL, 0x75ae5cf8UL, 0x48e900f3UL, 0x7f83c2f2UL, 0x263d84f0UL,
0x115746f1UL, 0x944109f4UL, 0xa32bcbf5UL, 0xfa958df7UL, 0xcdff4ff6UL,
0x605d78d9UL, 0x5737bad8UL, 0x0e89fcdaUL, 0x39e33edbUL, 0xbcf571deUL,
0x8b9fb3dfUL, 0xd221f5ddUL, 0xe54b37dcUL, 0xd80c6bd7UL, 0xef66a9d6UL,
0xb6d8efd4UL, 0x81b22dd5UL, 0x04a462d0UL, 0x33cea0d1UL, 0x6a70e6d3UL,
0x5d1a24d2UL, 0x10fe5ec5UL, 0x27949cc4UL, 0x7e2adac6UL, 0x494018c7UL,
0xcc5657c2UL, 0xfb3c95c3UL, 0xa282d3c1UL, 0x95e811c0UL, 0xa8af4dcbUL,
0x9fc58fcaUL, 0xc67bc9c8UL, 0xf1110bc9UL, 0x740744ccUL, 0x436d86cdUL,
0x1ad3c0cfUL, 0x2db902ceUL, 0x4096af91UL, 0x77fc6d90UL, 0x2e422b92UL,
0x1928e993UL, 0x9c3ea696UL, 0xab546497UL, 0xf2ea2295UL, 0xc580e094UL,
0xf8c7bc9fUL, 0xcfad7e9eUL, 0x9613389cUL, 0xa179fa9dUL, 0x246fb598UL,
0x13057799UL, 0x4abb319bUL, 0x7dd1f39aUL, 0x3035898dUL, 0x075f4b8cUL,
0x5ee10d8eUL, 0x698bcf8fUL, 0xec9d808aUL, 0xdbf7428bUL, 0x82490489UL,
0xb523c688UL, 0x88649a83UL, 0xbf0e5882UL, 0xe6b01e80UL, 0xd1dadc81UL,
0x54cc9384UL, 0x63a65185UL, 0x3a181787UL, 0x0d72d586UL, 0xa0d0e2a9UL,
0x97ba20a8UL, 0xce0466aaUL, 0xf96ea4abUL, 0x7c78ebaeUL, 0x4b1229afUL,
0x12ac6fadUL, 0x25c6adacUL, 0x1881f1a7UL, 0x2feb33a6UL, 0x765575a4UL,
0x413fb7a5UL, 0xc429f8a0UL, 0xf3433aa1UL, 0xaafd7ca3UL, 0x9d97bea2UL,
0xd073c4b5UL, 0xe71906b4UL, 0xbea740b6UL, 0x89cd82b7UL, 0x0cdbcdb2UL,
0x3bb10fb3UL, 0x620f49b1UL, 0x55658bb0UL, 0x6822d7bbUL, 0x5f4815baUL,
0x06f653b8UL, 0x319c91b9UL, 0xb48adebcUL, 0x83e01cbdUL, 0xda5e5abfUL,
0xed3498beUL
},
{
0x00000000UL, 0x6567bcb8UL, 0x8bc809aaUL, 0xeeafb512UL, 0x5797628fUL,
0x32f0de37UL, 0xdc5f6b25UL, 0xb938d79dUL, 0xef28b4c5UL, 0x8a4f087dUL,
0x64e0bd6fUL, 0x018701d7UL, 0xb8bfd64aUL, 0xddd86af2UL, 0x3377dfe0UL,
0x56106358UL, 0x9f571950UL, 0xfa30a5e8UL, 0x149f10faUL, 0x71f8ac42UL,
0xc8c07bdfUL, 0xada7c767UL, 0x43087275UL, 0x266fcecdUL, 0x707fad95UL,
0x1518112dUL, 0xfbb7a43fUL, 0x9ed01887UL, 0x27e8cf1aUL, 0x428f73a2UL,
0xac20c6b0UL, 0xc9477a08UL, 0x3eaf32a0UL, 0x5bc88e18UL, 0xb5673b0aUL,
0xd00087b2UL, 0x6938502fUL, 0x0c5fec97UL, 0xe2f05985UL, 0x8797e53dUL,
0xd1878665UL, 0xb4e03addUL, 0x5a4f8fcfUL, 0x3f283377UL, 0x8610e4eaUL,
0xe3775852UL, 0x0dd8ed40UL, 0x68bf51f8UL, 0xa1f82bf0UL, 0xc49f9748UL,
0x2a30225aUL, 0x4f579ee2UL, 0xf66f497fUL, 0x9308f5c7UL, 0x7da740d5UL,
0x18c0fc6dUL, 0x4ed09f35UL, 0x2bb7238dUL, 0xc518969fUL, 0xa07f2a27UL,
0x1947fdbaUL, 0x7c204102UL, 0x928ff410UL, 0xf7e848a8UL, 0x3d58149bUL,
0x583fa823UL, 0xb6901d31UL, 0xd3f7a189UL, 0x6acf7614UL, 0x0fa8caacUL,
0xe1077fbeUL, 0x8460c306UL, 0xd270a05eUL, 0xb7171ce6UL, 0x59b8a9f4UL,
0x3cdf154cUL, 0x85e7c2d1UL, 0xe0807e69UL, 0x0e2fcb7bUL, 0x6b4877c3UL,
0xa20f0dcbUL, 0xc768b173UL, 0x29c70461UL, 0x4ca0b8d9UL, 0xf5986f44UL,
0x90ffd3fcUL, 0x7e5066eeUL, 0x1b37da56UL, 0x4d27b90eUL, 0x284005b6UL,
0xc6efb0a4UL, 0xa3880c1cUL, 0x1ab0db81UL, 0x7fd76739UL, 0x9178d22bUL,
0xf41f6e93UL, 0x03f7263bUL, 0x66909a83UL, 0x883f2f91UL, 0xed589329UL,
0x546044b4UL, 0x3107f80cUL, 0xdfa84d1eUL, 0xbacff1a6UL, 0xecdf92feUL,
0x89b82e46UL, 0x67179b54UL, 0x027027ecUL, 0xbb48f071UL, 0xde2f4cc9UL,
0x3080f9dbUL, 0x55e74563UL, 0x9ca03f6bUL, 0xf9c783d3UL, 0x176836c1UL,
0x720f8a79UL, 0xcb375de4UL, 0xae50e15cUL, 0x40ff544eUL, 0x2598e8f6UL,
0x73888baeUL, 0x16ef3716UL, 0xf8408204UL, 0x9d273ebcUL, 0x241fe921UL,
0x41785599UL, 0xafd7e08bUL, 0xcab05c33UL, 0x3bb659edUL, 0x5ed1e555UL,
0xb07e5047UL, 0xd519ecffUL, 0x6c213b62UL, 0x094687daUL, 0xe7e932c8UL,
0x828e8e70UL, 0xd49eed28UL, 0xb1f95190UL, 0x5f56e482UL, 0x3a31583aUL,
0x83098fa7UL, 0xe66e331fUL, 0x08c1860dUL, 0x6da63ab5UL, 0xa4e140bdUL,
0xc186fc05UL, 0x2f294917UL, 0x4a4ef5afUL, 0xf3762232UL, 0x96119e8aUL,
0x78be2b98UL, 0x1dd99720UL, 0x4bc9f478UL, 0x2eae48c0UL, 0xc001fdd2UL,
0xa566416aUL, 0x1c5e96f7UL, 0x79392a4fUL, 0x97969f5dUL, 0xf2f123e5UL,
0x05196b4dUL, 0x607ed7f5UL, 0x8ed162e7UL, 0xebb6de5fUL, 0x528e09c2UL,
0x37e9b57aUL, 0xd9460068UL, 0xbc21bcd0UL, 0xea31df88UL, 0x8f566330UL,
0x61f9d622UL, 0x049e6a9aUL, 0xbda6bd07UL, 0xd8c101bfUL, 0x366eb4adUL,
0x53090815UL, 0x9a4e721dUL, 0xff29cea5UL, 0x11867bb7UL, 0x74e1c70fUL,
0xcdd91092UL, 0xa8beac2aUL, 0x46111938UL, 0x2376a580UL, 0x7566c6d8UL,
0x10017a60UL, 0xfeaecf72UL, 0x9bc973caUL, 0x22f1a457UL, 0x479618efUL,
0xa939adfdUL, 0xcc5e1145UL, 0x06ee4d76UL, 0x6389f1ceUL, 0x8d2644dcUL,
0xe841f864UL, 0x51792ff9UL, 0x341e9341UL, 0xdab12653UL, 0xbfd69aebUL,
0xe9c6f9b3UL, 0x8ca1450bUL, 0x620ef019UL, 0x07694ca1UL, 0xbe519b3cUL,
0xdb362784UL, 0x35999296UL, 0x50fe2e2eUL, 0x99b95426UL, 0xfcdee89eUL,
0x12715d8cUL, 0x7716e134UL, 0xce2e36a9UL, 0xab498a11UL, 0x45e63f03UL,
0x208183bbUL, 0x7691e0e3UL, 0x13f65c5bUL, 0xfd59e949UL, 0x983e55f1UL,
0x2106826cUL, 0x44613ed4UL, 0xaace8bc6UL, 0xcfa9377eUL, 0x38417fd6UL,
0x5d26c36eUL, 0xb389767cUL, 0xd6eecac4UL, 0x6fd61d59UL, 0x0ab1a1e1UL,
0xe41e14f3UL, 0x8179a84bUL, 0xd769cb13UL, 0xb20e77abUL, 0x5ca1c2b9UL,
0x39c67e01UL, 0x80fea99cUL, 0xe5991524UL, 0x0b36a036UL, 0x6e511c8eUL,
0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL,
0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL,
0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL,
0xf10605deUL
#endif
}
};
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/infback.c
|
/* infback.c -- inflate using a call-back interface
* Copyright (C) 1995-2016 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/*
This code is largely copied from inflate.c. Normally either infback.o or
inflate.o would be linked into an application--not both. The interface
with inffast.c is retained so that optimized assembler-coded versions of
inflate_fast() can be used with either inflate.c or infback.c.
*/
#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"
/* function prototypes */
local void fixedtables OF((struct inflate_state FAR *state));
/*
strm provides memory allocation functions in zalloc and zfree, or
Z_NULL to use the library memory allocation functions.
windowBits is in the range 8..15, and window is a user-supplied
window and output buffer that is 2**windowBits bytes.
*/
int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)
z_streamp strm;
int windowBits;
unsigned char FAR *window;
const char *version;
int stream_size;
{
struct inflate_state FAR *state;
if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
stream_size != (int)(sizeof(z_stream)))
return Z_VERSION_ERROR;
if (strm == Z_NULL || window == Z_NULL ||
windowBits < 8 || windowBits > 15)
return Z_STREAM_ERROR;
strm->msg = Z_NULL; /* in case we return an error */
if (strm->zalloc == (alloc_func)0) {
#ifdef Z_SOLO
return Z_STREAM_ERROR;
#else
strm->zalloc = zcalloc;
strm->opaque = (voidpf)0;
#endif
}
if (strm->zfree == (free_func)0)
#ifdef Z_SOLO
return Z_STREAM_ERROR;
#else
strm->zfree = zcfree;
#endif
state = (struct inflate_state FAR *)ZALLOC(strm, 1,
sizeof(struct inflate_state));
if (state == Z_NULL) return Z_MEM_ERROR;
Tracev((stderr, "inflate: allocated\n"));
strm->state = (struct internal_state FAR *)state;
state->dmax = 32768U;
state->wbits = (uInt)windowBits;
state->wsize = 1U << windowBits;
state->window = window;
state->wnext = 0;
state->whave = 0;
return Z_OK;
}
/*
Return state with length and distance decoding tables and index sizes set to
fixed code decoding. Normally this returns fixed tables from inffixed.h.
If BUILDFIXED is defined, then instead this routine builds the tables the
first time it's called, and returns those tables the first time and
thereafter. This reduces the size of the code by about 2K bytes, in
exchange for a little execution time. However, BUILDFIXED should not be
used for threaded applications, since the rewriting of the tables and virgin
may not be thread-safe.
*/
local void fixedtables(state)
struct inflate_state FAR *state;
{
#ifdef BUILDFIXED
static int virgin = 1;
static code *lenfix, *distfix;
static code fixed[544];
/* build fixed huffman tables if first call (may not be thread safe) */
if (virgin) {
unsigned sym, bits;
static code *next;
/* literal/length table */
sym = 0;
while (sym < 144) state->lens[sym++] = 8;
while (sym < 256) state->lens[sym++] = 9;
while (sym < 280) state->lens[sym++] = 7;
while (sym < 288) state->lens[sym++] = 8;
next = fixed;
lenfix = next;
bits = 9;
inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
/* distance table */
sym = 0;
while (sym < 32) state->lens[sym++] = 5;
distfix = next;
bits = 5;
inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
/* do this just once */
virgin = 0;
}
#else /* !BUILDFIXED */
# include "inffixed.h"
#endif /* BUILDFIXED */
state->lencode = lenfix;
state->lenbits = 9;
state->distcode = distfix;
state->distbits = 5;
}
/* Macros for inflateBack(): */
/* Load returned state from inflate_fast() */
#define LOAD() \
do { \
put = strm->next_out; \
left = strm->avail_out; \
next = strm->next_in; \
have = strm->avail_in; \
hold = state->hold; \
bits = state->bits; \
} while (0)
/* Set state from registers for inflate_fast() */
#define RESTORE() \
do { \
strm->next_out = put; \
strm->avail_out = left; \
strm->next_in = next; \
strm->avail_in = have; \
state->hold = hold; \
state->bits = bits; \
} while (0)
/* Clear the input bit accumulator */
#define INITBITS() \
do { \
hold = 0; \
bits = 0; \
} while (0)
/* Assure that some input is available. If input is requested, but denied,
then return a Z_BUF_ERROR from inflateBack(). */
#define PULL() \
do { \
if (have == 0) { \
have = in(in_desc, &next); \
if (have == 0) { \
next = Z_NULL; \
ret = Z_BUF_ERROR; \
goto inf_leave; \
} \
} \
} while (0)
/* Get a byte of input into the bit accumulator, or return from inflateBack()
with an error if there is no input available. */
#define PULLBYTE() \
do { \
PULL(); \
have--; \
hold += (unsigned long)(*next++) << bits; \
bits += 8; \
} while (0)
/* Assure that there are at least n bits in the bit accumulator. If there is
not enough available input to do that, then return from inflateBack() with
an error. */
#define NEEDBITS(n) \
do { \
while (bits < (unsigned)(n)) \
PULLBYTE(); \
} while (0)
/* Return the low n bits of the bit accumulator (n < 16) */
#define BITS(n) \
((unsigned)hold & ((1U << (n)) - 1))
/* Remove n bits from the bit accumulator */
#define DROPBITS(n) \
do { \
hold >>= (n); \
bits -= (unsigned)(n); \
} while (0)
/* Remove zero to seven bits as needed to go to a byte boundary */
#define BYTEBITS() \
do { \
hold >>= bits & 7; \
bits -= bits & 7; \
} while (0)
/* Assure that some output space is available, by writing out the window
if it's full. If the write fails, return from inflateBack() with a
Z_BUF_ERROR. */
#define ROOM() \
do { \
if (left == 0) { \
put = state->window; \
left = state->wsize; \
state->whave = left; \
if (out(out_desc, put, left)) { \
ret = Z_BUF_ERROR; \
goto inf_leave; \
} \
} \
} while (0)
/*
strm provides the memory allocation functions and window buffer on input,
and provides information on the unused input on return. For Z_DATA_ERROR
returns, strm will also provide an error message.
in() and out() are the call-back input and output functions. When
inflateBack() needs more input, it calls in(). When inflateBack() has
filled the window with output, or when it completes with data in the
window, it calls out() to write out the data. The application must not
change the provided input until in() is called again or inflateBack()
returns. The application must not change the window/output buffer until
inflateBack() returns.
in() and out() are called with a descriptor parameter provided in the
inflateBack() call. This parameter can be a structure that provides the
information required to do the read or write, as well as accumulated
information on the input and output such as totals and check values.
in() should return zero on failure. out() should return non-zero on
failure. If either in() or out() fails, than inflateBack() returns a
Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it
was in() or out() that caused in the error. Otherwise, inflateBack()
returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
error, or Z_MEM_ERROR if it could not allocate memory for the state.
inflateBack() can also return Z_STREAM_ERROR if the input parameters
are not correct, i.e. strm is Z_NULL or the state was not initialized.
*/
int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)
z_streamp strm;
in_func in;
void FAR *in_desc;
out_func out;
void FAR *out_desc;
{
struct inflate_state FAR *state;
z_const unsigned char FAR *next; /* next input */
unsigned char FAR *put; /* next output */
unsigned have, left; /* available input and output */
unsigned long hold; /* bit buffer */
unsigned bits; /* bits in bit buffer */
unsigned copy; /* number of stored or match bytes to copy */
unsigned char FAR *from; /* where to copy match bytes from */
code here; /* current decoding table entry */
code last; /* parent table entry */
unsigned len; /* length to copy for repeats, bits to drop */
int ret; /* return code */
static const unsigned short order[19] = /* permutation of code lengths */
{16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
/* Check that the strm exists and that the state was initialized */
if (strm == Z_NULL || strm->state == Z_NULL)
return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
/* Reset the state */
strm->msg = Z_NULL;
state->mode = TYPE;
state->last = 0;
state->whave = 0;
next = strm->next_in;
have = next != Z_NULL ? strm->avail_in : 0;
hold = 0;
bits = 0;
put = state->window;
left = state->wsize;
/* Inflate until end of block marked as last */
for (;;)
switch (state->mode) {
case TYPE:
/* determine and dispatch block type */
if (state->last) {
BYTEBITS();
state->mode = DONE;
break;
}
NEEDBITS(3);
state->last = BITS(1);
DROPBITS(1);
switch (BITS(2)) {
case 0: /* stored block */
Tracev((stderr, "inflate: stored block%s\n",
state->last ? " (last)" : ""));
state->mode = STORED;
break;
case 1: /* fixed block */
fixedtables(state);
Tracev((stderr, "inflate: fixed codes block%s\n",
state->last ? " (last)" : ""));
state->mode = LEN; /* decode codes */
break;
case 2: /* dynamic block */
Tracev((stderr, "inflate: dynamic codes block%s\n",
state->last ? " (last)" : ""));
state->mode = TABLE;
break;
case 3:
strm->msg = (char *)"invalid block type";
state->mode = BAD;
}
DROPBITS(2);
break;
case STORED:
/* get and verify stored block length */
BYTEBITS(); /* go to byte boundary */
NEEDBITS(32);
if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
strm->msg = (char *)"invalid stored block lengths";
state->mode = BAD;
break;
}
state->length = (unsigned)hold & 0xffff;
Tracev((stderr, "inflate: stored length %u\n",
state->length));
INITBITS();
/* copy stored block from input to output */
while (state->length != 0) {
copy = state->length;
PULL();
ROOM();
if (copy > have) copy = have;
if (copy > left) copy = left;
zmemcpy(put, next, copy);
have -= copy;
next += copy;
left -= copy;
put += copy;
state->length -= copy;
}
Tracev((stderr, "inflate: stored end\n"));
state->mode = TYPE;
break;
case TABLE:
/* get dynamic table entries descriptor */
NEEDBITS(14);
state->nlen = BITS(5) + 257;
DROPBITS(5);
state->ndist = BITS(5) + 1;
DROPBITS(5);
state->ncode = BITS(4) + 4;
DROPBITS(4);
#ifndef PKZIP_BUG_WORKAROUND
if (state->nlen > 286 || state->ndist > 30) {
strm->msg = (char *)"too many length or distance symbols";
state->mode = BAD;
break;
}
#endif
Tracev((stderr, "inflate: table sizes ok\n"));
/* get code length code lengths (not a typo) */
state->have = 0;
while (state->have < state->ncode) {
NEEDBITS(3);
state->lens[order[state->have++]] = (unsigned short)BITS(3);
DROPBITS(3);
}
while (state->have < 19)
state->lens[order[state->have++]] = 0;
state->next = state->codes;
state->lencode = (code const FAR *)(state->next);
state->lenbits = 7;
ret = inflate_table(CODES, state->lens, 19, &(state->next),
&(state->lenbits), state->work);
if (ret) {
strm->msg = (char *)"invalid code lengths set";
state->mode = BAD;
break;
}
Tracev((stderr, "inflate: code lengths ok\n"));
/* get length and distance code code lengths */
state->have = 0;
while (state->have < state->nlen + state->ndist) {
for (;;) {
here = state->lencode[BITS(state->lenbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if (here.val < 16) {
DROPBITS(here.bits);
state->lens[state->have++] = here.val;
}
else {
if (here.val == 16) {
NEEDBITS(here.bits + 2);
DROPBITS(here.bits);
if (state->have == 0) {
strm->msg = (char *)"invalid bit length repeat";
state->mode = BAD;
break;
}
len = (unsigned)(state->lens[state->have - 1]);
copy = 3 + BITS(2);
DROPBITS(2);
}
else if (here.val == 17) {
NEEDBITS(here.bits + 3);
DROPBITS(here.bits);
len = 0;
copy = 3 + BITS(3);
DROPBITS(3);
}
else {
NEEDBITS(here.bits + 7);
DROPBITS(here.bits);
len = 0;
copy = 11 + BITS(7);
DROPBITS(7);
}
if (state->have + copy > state->nlen + state->ndist) {
strm->msg = (char *)"invalid bit length repeat";
state->mode = BAD;
break;
}
while (copy--)
state->lens[state->have++] = (unsigned short)len;
}
}
/* handle error breaks in while */
if (state->mode == BAD) break;
/* check for end-of-block code (better have one) */
if (state->lens[256] == 0) {
strm->msg = (char *)"invalid code -- missing end-of-block";
state->mode = BAD;
break;
}
/* build code tables -- note: do not change the lenbits or distbits
values here (9 and 6) without reading the comments in inftrees.h
concerning the ENOUGH constants, which depend on those values */
state->next = state->codes;
state->lencode = (code const FAR *)(state->next);
state->lenbits = 9;
ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
&(state->lenbits), state->work);
if (ret) {
strm->msg = (char *)"invalid literal/lengths set";
state->mode = BAD;
break;
}
state->distcode = (code const FAR *)(state->next);
state->distbits = 6;
ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
&(state->next), &(state->distbits), state->work);
if (ret) {
strm->msg = (char *)"invalid distances set";
state->mode = BAD;
break;
}
Tracev((stderr, "inflate: codes ok\n"));
state->mode = LEN;
case LEN:
/* use inflate_fast() if we have enough input and output */
if (have >= 6 && left >= 258) {
RESTORE();
if (state->whave < state->wsize)
state->whave = state->wsize - left;
inflate_fast(strm, state->wsize);
LOAD();
break;
}
/* get a literal, length, or end-of-block code */
for (;;) {
here = state->lencode[BITS(state->lenbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if (here.op && (here.op & 0xf0) == 0) {
last = here;
for (;;) {
here = state->lencode[last.val +
(BITS(last.bits + last.op) >> last.bits)];
if ((unsigned)(last.bits + here.bits) <= bits) break;
PULLBYTE();
}
DROPBITS(last.bits);
}
DROPBITS(here.bits);
state->length = (unsigned)here.val;
/* process literal */
if (here.op == 0) {
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
"inflate: literal '%c'\n" :
"inflate: literal 0x%02x\n", here.val));
ROOM();
*put++ = (unsigned char)(state->length);
left--;
state->mode = LEN;
break;
}
/* process end of block */
if (here.op & 32) {
Tracevv((stderr, "inflate: end of block\n"));
state->mode = TYPE;
break;
}
/* invalid code */
if (here.op & 64) {
strm->msg = (char *)"invalid literal/length code";
state->mode = BAD;
break;
}
/* length code -- get extra bits, if any */
state->extra = (unsigned)(here.op) & 15;
if (state->extra != 0) {
NEEDBITS(state->extra);
state->length += BITS(state->extra);
DROPBITS(state->extra);
}
Tracevv((stderr, "inflate: length %u\n", state->length));
/* get distance code */
for (;;) {
here = state->distcode[BITS(state->distbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if ((here.op & 0xf0) == 0) {
last = here;
for (;;) {
here = state->distcode[last.val +
(BITS(last.bits + last.op) >> last.bits)];
if ((unsigned)(last.bits + here.bits) <= bits) break;
PULLBYTE();
}
DROPBITS(last.bits);
}
DROPBITS(here.bits);
if (here.op & 64) {
strm->msg = (char *)"invalid distance code";
state->mode = BAD;
break;
}
state->offset = (unsigned)here.val;
/* get distance extra bits, if any */
state->extra = (unsigned)(here.op) & 15;
if (state->extra != 0) {
NEEDBITS(state->extra);
state->offset += BITS(state->extra);
DROPBITS(state->extra);
}
if (state->offset > state->wsize - (state->whave < state->wsize ?
left : 0)) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
break;
}
Tracevv((stderr, "inflate: distance %u\n", state->offset));
/* copy match from window to output */
do {
ROOM();
copy = state->wsize - state->offset;
if (copy < left) {
from = put + copy;
copy = left - copy;
}
else {
from = put - state->offset;
copy = left;
}
if (copy > state->length) copy = state->length;
state->length -= copy;
left -= copy;
do {
*put++ = *from++;
} while (--copy);
} while (state->length != 0);
break;
case DONE:
/* inflate stream terminated properly -- write leftover output */
ret = Z_STREAM_END;
if (left < state->wsize) {
if (out(out_desc, state->window, state->wsize - left))
ret = Z_BUF_ERROR;
}
goto inf_leave;
case BAD:
ret = Z_DATA_ERROR;
goto inf_leave;
default: /* can't happen, but makes compilers happy */
ret = Z_STREAM_ERROR;
goto inf_leave;
}
/* Return unused input */
inf_leave:
strm->next_in = next;
strm->avail_in = have;
return ret;
}
int ZEXPORT inflateBackEnd(strm)
z_streamp strm;
{
if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
return Z_STREAM_ERROR;
ZFREE(strm, strm->state);
strm->state = Z_NULL;
Tracev((stderr, "inflate: end\n"));
return Z_OK;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/zlib.h
|
/* zlib.h -- interface of the 'zlib' general purpose compression library
version 1.2.11, January 15th, 2017
Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
Jean-loup Gailly Mark Adler
[email protected] [email protected]
The data format used by the zlib library is described by RFCs (Request for
Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950
(zlib format), rfc1951 (deflate format) and rfc1952 (gzip format).
*/
#ifndef ZLIB_H
#define ZLIB_H
#include "zconf.h"
#ifdef __cplusplus
extern "C" {
#endif
#define ZLIB_VERSION "1.2.11"
#define ZLIB_VERNUM 0x12b0
#define ZLIB_VER_MAJOR 1
#define ZLIB_VER_MINOR 2
#define ZLIB_VER_REVISION 11
#define ZLIB_VER_SUBREVISION 0
/*
The 'zlib' compression library provides in-memory compression and
decompression functions, including integrity checks of the uncompressed data.
This version of the library supports only one compression method (deflation)
but other algorithms will be added later and will have the same stream
interface.
Compression can be done in a single step if the buffers are large enough,
or can be done by repeated calls of the compression function. In the latter
case, the application must provide more input and/or consume the output
(providing more output space) before each call.
The compressed data format used by default by the in-memory functions is
the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
around a deflate stream, which is itself documented in RFC 1951.
The library also supports reading and writing files in gzip (.gz) format
with an interface similar to that of stdio using the functions that start
with "gz". The gzip format is different from the zlib format. gzip is a
gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
This library can optionally read and write gzip and raw deflate streams in
memory as well.
The zlib format was designed to be compact and fast for use in memory
and on communications channels. The gzip format was designed for single-
file compression on file systems, has a larger header than zlib to maintain
directory information, and uses a different, slower check method than zlib.
The library does not install any signal handler. The decoder checks
the consistency of the compressed data, so the library should never crash
even in the case of corrupted input.
*/
typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
typedef void (*free_func) OF((voidpf opaque, voidpf address));
struct internal_state;
typedef struct z_stream_s {
z_const Bytef *next_in; /* next input byte */
uInt avail_in; /* number of bytes available at next_in */
uLong total_in; /* total number of input bytes read so far */
Bytef *next_out; /* next output byte will go here */
uInt avail_out; /* remaining free space at next_out */
uLong total_out; /* total number of bytes output so far */
z_const char *msg; /* last error message, NULL if no error */
struct internal_state FAR *state; /* not visible by applications */
alloc_func zalloc; /* used to allocate the internal state */
free_func zfree; /* used to free the internal state */
voidpf opaque; /* private data object passed to zalloc and zfree */
int data_type; /* best guess about the data type: binary or text
for deflate, or the decoding state for inflate */
uLong adler; /* Adler-32 or CRC-32 value of the uncompressed data */
uLong reserved; /* reserved for future use */
} z_stream;
typedef z_stream FAR *z_streamp;
/*
gzip header information passed to and from zlib routines. See RFC 1952
for more details on the meanings of these fields.
*/
typedef struct gz_header_s {
int text; /* true if compressed data believed to be text */
uLong time; /* modification time */
int xflags; /* extra flags (not used when writing a gzip file) */
int os; /* operating system */
Bytef *extra; /* pointer to extra field or Z_NULL if none */
uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
uInt extra_max; /* space at extra (only when reading header) */
Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
uInt name_max; /* space at name (only when reading header) */
Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
uInt comm_max; /* space at comment (only when reading header) */
int hcrc; /* true if there was or will be a header crc */
int done; /* true when done reading gzip header (not used
when writing a gzip file) */
} gz_header;
typedef gz_header FAR *gz_headerp;
/*
The application must update next_in and avail_in when avail_in has dropped
to zero. It must update next_out and avail_out when avail_out has dropped
to zero. The application must initialize zalloc, zfree and opaque before
calling the init function. All other fields are set by the compression
library and must not be updated by the application.
The opaque value provided by the application will be passed as the first
parameter for calls of zalloc and zfree. This can be useful for custom
memory management. The compression library attaches no meaning to the
opaque value.
zalloc must return Z_NULL if there is not enough memory for the object.
If zlib is used in a multi-threaded application, zalloc and zfree must be
thread safe. In that case, zlib is thread-safe. When zalloc and zfree are
Z_NULL on entry to the initialization function, they are set to internal
routines that use the standard library functions malloc() and free().
On 16-bit systems, the functions zalloc and zfree must be able to allocate
exactly 65536 bytes, but will not be required to allocate more than this if
the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, pointers
returned by zalloc for objects of exactly 65536 bytes *must* have their
offset normalized to zero. The default allocation function provided by this
library ensures this (see zutil.c). To reduce memory requirements and avoid
any allocation of 64K objects, at the expense of compression ratio, compile
the library with -DMAX_WBITS=14 (see zconf.h).
The fields total_in and total_out can be used for statistics or progress
reports. After compression, total_in holds the total size of the
uncompressed data and may be saved for use by the decompressor (particularly
if the decompressor wants to decompress everything in a single step).
*/
/* constants */
#define Z_NO_FLUSH 0
#define Z_PARTIAL_FLUSH 1
#define Z_SYNC_FLUSH 2
#define Z_FULL_FLUSH 3
#define Z_FINISH 4
#define Z_BLOCK 5
#define Z_TREES 6
/* Allowed flush values; see deflate() and inflate() below for details */
#define Z_OK 0
#define Z_STREAM_END 1
#define Z_NEED_DICT 2
#define Z_ERRNO (-1)
#define Z_STREAM_ERROR (-2)
#define Z_DATA_ERROR (-3)
#define Z_MEM_ERROR (-4)
#define Z_BUF_ERROR (-5)
#define Z_VERSION_ERROR (-6)
/* Return codes for the compression/decompression functions. Negative values
* are errors, positive values are used for special but normal events.
*/
#define Z_NO_COMPRESSION 0
#define Z_BEST_SPEED 1
#define Z_BEST_COMPRESSION 9
#define Z_DEFAULT_COMPRESSION (-1)
/* compression levels */
#define Z_FILTERED 1
#define Z_HUFFMAN_ONLY 2
#define Z_RLE 3
#define Z_FIXED 4
#define Z_DEFAULT_STRATEGY 0
/* compression strategy; see deflateInit2() below for details */
#define Z_BINARY 0
#define Z_TEXT 1
#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */
#define Z_UNKNOWN 2
/* Possible values of the data_type field for deflate() */
#define Z_DEFLATED 8
/* The deflate compression method (the only one supported in this version) */
#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
#define zlib_version zlibVersion()
/* for compatibility with versions < 1.0.2 */
/* basic functions */
ZEXTERN const char * ZEXPORT zlibVersion OF((void));
/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
If the first character differs, the library code actually used is not
compatible with the zlib.h header file used by the application. This check
is automatically made by deflateInit and inflateInit.
*/
/*
ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
Initializes the internal stream state for compression. The fields
zalloc, zfree and opaque must be initialized before by the caller. If
zalloc and zfree are set to Z_NULL, deflateInit updates them to use default
allocation functions.
The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
1 gives best speed, 9 gives best compression, 0 gives no compression at all
(the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION
requests a default compromise between speed and compression (currently
equivalent to level 6).
deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_STREAM_ERROR if level is not a valid compression level, or
Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
with the version assumed by the caller (ZLIB_VERSION). msg is set to null
if there is no error message. deflateInit does not perform any compression:
this will be done by deflate().
*/
ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
/*
deflate compresses as much data as possible, and stops when the input
buffer becomes empty or the output buffer becomes full. It may introduce
some output latency (reading input without producing any output) except when
forced to flush.
The detailed semantics are as follows. deflate performs one or both of the
following actions:
- Compress more input starting at next_in and update next_in and avail_in
accordingly. If not all input can be processed (because there is not
enough room in the output buffer), next_in and avail_in are updated and
processing will resume at this point for the next call of deflate().
- Generate more output starting at next_out and update next_out and avail_out
accordingly. This action is forced if the parameter flush is non zero.
Forcing flush frequently degrades the compression ratio, so this parameter
should be set only when necessary. Some output may be provided even if
flush is zero.
Before the call of deflate(), the application should ensure that at least
one of the actions is possible, by providing more input and/or consuming more
output, and updating avail_in or avail_out accordingly; avail_out should
never be zero before the call. The application can consume the compressed
output when it wants, for example when the output buffer is full (avail_out
== 0), or after each call of deflate(). If deflate returns Z_OK and with
zero avail_out, it must be called again after making room in the output
buffer because there might be more output pending. See deflatePending(),
which can be used if desired to determine whether or not there is more ouput
in that case.
Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
decide how much data to accumulate before producing output, in order to
maximize compression.
If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
flushed to the output buffer and the output is aligned on a byte boundary, so
that the decompressor can get all input data available so far. (In
particular avail_in is zero after the call if enough output space has been
provided before the call.) Flushing may degrade compression for some
compression algorithms and so it should be used only when necessary. This
completes the current deflate block and follows it with an empty stored block
that is three bits plus filler bits to the next byte, followed by four bytes
(00 00 ff ff).
If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the
output buffer, but the output is not aligned to a byte boundary. All of the
input data so far will be available to the decompressor, as for Z_SYNC_FLUSH.
This completes the current deflate block and follows it with an empty fixed
codes block that is 10 bits long. This assures that enough bytes are output
in order for the decompressor to finish the block before the empty fixed
codes block.
If flush is set to Z_BLOCK, a deflate block is completed and emitted, as
for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to
seven bits of the current block are held to be written as the next byte after
the next deflate block is completed. In this case, the decompressor may not
be provided enough bits at this point in order to complete decompression of
the data provided so far to the compressor. It may need to wait for the next
block to be emitted. This is for advanced applications that need to control
the emission of deflate blocks.
If flush is set to Z_FULL_FLUSH, all output is flushed as with
Z_SYNC_FLUSH, and the compression state is reset so that decompression can
restart from this point if previous compressed data has been damaged or if
random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
compression.
If deflate returns with avail_out == 0, this function must be called again
with the same value of the flush parameter and more output space (updated
avail_out), until the flush is complete (deflate returns with non-zero
avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
avail_out is greater than six to avoid repeated flush markers due to
avail_out == 0 on return.
If the parameter flush is set to Z_FINISH, pending input is processed,
pending output is flushed and deflate returns with Z_STREAM_END if there was
enough output space. If deflate returns with Z_OK or Z_BUF_ERROR, this
function must be called again with Z_FINISH and more output space (updated
avail_out) but no more input data, until it returns with Z_STREAM_END or an
error. After deflate has returned Z_STREAM_END, the only possible operations
on the stream are deflateReset or deflateEnd.
Z_FINISH can be used in the first deflate call after deflateInit if all the
compression is to be done in a single step. In order to complete in one
call, avail_out must be at least the value returned by deflateBound (see
below). Then deflate is guaranteed to return Z_STREAM_END. If not enough
output space is provided, deflate will not return Z_STREAM_END, and it must
be called again as described above.
deflate() sets strm->adler to the Adler-32 checksum of all input read
so far (that is, total_in bytes). If a gzip stream is being generated, then
strm->adler will be the CRC-32 checksum of the input read so far. (See
deflateInit2 below.)
deflate() may update strm->data_type if it can make a good guess about
the input data type (Z_BINARY or Z_TEXT). If in doubt, the data is
considered binary. This field is only for information purposes and does not
affect the compression algorithm in any manner.
deflate() returns Z_OK if some progress has been made (more input
processed or more output produced), Z_STREAM_END if all input has been
consumed and all output has been produced (only when flush is set to
Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
if next_in or next_out was Z_NULL or the state was inadvertently written over
by the application), or Z_BUF_ERROR if no progress is possible (for example
avail_in or avail_out was zero). Note that Z_BUF_ERROR is not fatal, and
deflate() can be called again with more input and more output space to
continue compressing.
*/
ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
/*
All dynamically allocated data structures for this stream are freed.
This function discards any unprocessed input and does not flush any pending
output.
deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
stream state was inconsistent, Z_DATA_ERROR if the stream was freed
prematurely (some input or output was discarded). In the error case, msg
may be set but then points to a static string (which must not be
deallocated).
*/
/*
ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
Initializes the internal stream state for decompression. The fields
next_in, avail_in, zalloc, zfree and opaque must be initialized before by
the caller. In the current version of inflate, the provided input is not
read or consumed. The allocation of a sliding window will be deferred to
the first call of inflate (if the decompression does not complete on the
first call). If zalloc and zfree are set to Z_NULL, inflateInit updates
them to use default allocation functions.
inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
version assumed by the caller, or Z_STREAM_ERROR if the parameters are
invalid, such as a null pointer to the structure. msg is set to null if
there is no error message. inflateInit does not perform any decompression.
Actual decompression will be done by inflate(). So next_in, and avail_in,
next_out, and avail_out are unused and unchanged. The current
implementation of inflateInit() does not process any header information --
that is deferred until inflate() is called.
*/
ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
/*
inflate decompresses as much data as possible, and stops when the input
buffer becomes empty or the output buffer becomes full. It may introduce
some output latency (reading input without producing any output) except when
forced to flush.
The detailed semantics are as follows. inflate performs one or both of the
following actions:
- Decompress more input starting at next_in and update next_in and avail_in
accordingly. If not all input can be processed (because there is not
enough room in the output buffer), then next_in and avail_in are updated
accordingly, and processing will resume at this point for the next call of
inflate().
- Generate more output starting at next_out and update next_out and avail_out
accordingly. inflate() provides as much output as possible, until there is
no more input data or no more space in the output buffer (see below about
the flush parameter).
Before the call of inflate(), the application should ensure that at least
one of the actions is possible, by providing more input and/or consuming more
output, and updating the next_* and avail_* values accordingly. If the
caller of inflate() does not provide both available input and available
output space, it is possible that there will be no progress made. The
application can consume the uncompressed output when it wants, for example
when the output buffer is full (avail_out == 0), or after each call of
inflate(). If inflate returns Z_OK and with zero avail_out, it must be
called again after making room in the output buffer because there might be
more output pending.
The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH,
Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much
output as possible to the output buffer. Z_BLOCK requests that inflate()
stop if and when it gets to the next deflate block boundary. When decoding
the zlib or gzip format, this will cause inflate() to return immediately
after the header and before the first block. When doing a raw inflate,
inflate() will go ahead and process the first block, and will return when it
gets to the end of that block, or when it runs out of data.
The Z_BLOCK option assists in appending to or combining deflate streams.
To assist in this, on return inflate() always sets strm->data_type to the
number of unused bits in the last byte taken from strm->next_in, plus 64 if
inflate() is currently decoding the last block in the deflate stream, plus
128 if inflate() returned immediately after decoding an end-of-block code or
decoding the complete header up to just before the first byte of the deflate
stream. The end-of-block will not be indicated until all of the uncompressed
data from that block has been written to strm->next_out. The number of
unused bits may in general be greater than seven, except when bit 7 of
data_type is set, in which case the number of unused bits will be less than
eight. data_type is set as noted here every time inflate() returns for all
flush options, and so can be used to determine the amount of currently
consumed input in bits.
The Z_TREES option behaves as Z_BLOCK does, but it also returns when the
end of each deflate block header is reached, before any actual data in that
block is decoded. This allows the caller to determine the length of the
deflate block header for later use in random access within a deflate block.
256 is added to the value of strm->data_type when inflate() returns
immediately after reaching the end of the deflate block header.
inflate() should normally be called until it returns Z_STREAM_END or an
error. However if all decompression is to be performed in a single step (a
single call of inflate), the parameter flush should be set to Z_FINISH. In
this case all pending input is processed and all pending output is flushed;
avail_out must be large enough to hold all of the uncompressed data for the
operation to complete. (The size of the uncompressed data may have been
saved by the compressor for this purpose.) The use of Z_FINISH is not
required to perform an inflation in one step. However it may be used to
inform inflate that a faster approach can be used for the single inflate()
call. Z_FINISH also informs inflate to not maintain a sliding window if the
stream completes, which reduces inflate's memory footprint. If the stream
does not complete, either because not all of the stream is provided or not
enough output space is provided, then a sliding window will be allocated and
inflate() can be called again to continue the operation as if Z_NO_FLUSH had
been used.
In this implementation, inflate() always flushes as much output as
possible to the output buffer, and always uses the faster approach on the
first call. So the effects of the flush parameter in this implementation are
on the return value of inflate() as noted below, when inflate() returns early
when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of
memory for a sliding window when Z_FINISH is used.
If a preset dictionary is needed after this call (see inflateSetDictionary
below), inflate sets strm->adler to the Adler-32 checksum of the dictionary
chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
strm->adler to the Adler-32 checksum of all output produced so far (that is,
total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
below. At the end of the stream, inflate() checks that its computed Adler-32
checksum is equal to that saved by the compressor and returns Z_STREAM_END
only if the checksum is correct.
inflate() can decompress and check either zlib-wrapped or gzip-wrapped
deflate data. The header type is detected automatically, if requested when
initializing with inflateInit2(). Any information contained in the gzip
header is not retained unless inflateGetHeader() is used. When processing
gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output
produced so far. The CRC-32 is checked against the gzip trailer, as is the
uncompressed length, modulo 2^32.
inflate() returns Z_OK if some progress has been made (more input processed
or more output produced), Z_STREAM_END if the end of the compressed data has
been reached and all uncompressed output has been produced, Z_NEED_DICT if a
preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
corrupted (input stream not conforming to the zlib format or incorrect check
value, in which case strm->msg points to a string with a more specific
error), Z_STREAM_ERROR if the stream structure was inconsistent (for example
next_in or next_out was Z_NULL, or the state was inadvertently written over
by the application), Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR
if no progress was possible or if there was not enough room in the output
buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and
inflate() can be called again with more input and more output space to
continue decompressing. If Z_DATA_ERROR is returned, the application may
then call inflateSync() to look for a good compression block if a partial
recovery of the data is to be attempted.
*/
ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
/*
All dynamically allocated data structures for this stream are freed.
This function discards any unprocessed input and does not flush any pending
output.
inflateEnd returns Z_OK if success, or Z_STREAM_ERROR if the stream state
was inconsistent.
*/
/* Advanced functions */
/*
The following functions are needed only in some special applications.
*/
/*
ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
int level,
int method,
int windowBits,
int memLevel,
int strategy));
This is another version of deflateInit with more compression options. The
fields next_in, zalloc, zfree and opaque must be initialized before by the
caller.
The method parameter is the compression method. It must be Z_DEFLATED in
this version of the library.
The windowBits parameter is the base two logarithm of the window size
(the size of the history buffer). It should be in the range 8..15 for this
version of the library. Larger values of this parameter result in better
compression at the expense of memory usage. The default value is 15 if
deflateInit is used instead.
For the current implementation of deflate(), a windowBits value of 8 (a
window size of 256 bytes) is not supported. As a result, a request for 8
will result in 9 (a 512-byte window). In that case, providing 8 to
inflateInit2() will result in an error when the zlib header with 9 is
checked against the initialization of inflate(). The remedy is to not use 8
with deflateInit2() with this initialization, or at least in that case use 9
with inflateInit2().
windowBits can also be -8..-15 for raw deflate. In this case, -windowBits
determines the window size. deflate() will then generate raw deflate data
with no zlib header or trailer, and will not compute a check value.
windowBits can also be greater than 15 for optional gzip encoding. Add
16 to windowBits to write a simple gzip header and trailer around the
compressed data instead of a zlib wrapper. The gzip header will have no
file name, no extra data, no comment, no modification time (set to zero), no
header crc, and the operating system will be set to the appropriate value,
if the operating system was determined at compile time. If a gzip stream is
being written, strm->adler is a CRC-32 instead of an Adler-32.
For raw deflate or gzip encoding, a request for a 256-byte window is
rejected as invalid, since only the zlib header provides a means of
transmitting the window size to the decompressor.
The memLevel parameter specifies how much memory should be allocated
for the internal compression state. memLevel=1 uses minimum memory but is
slow and reduces compression ratio; memLevel=9 uses maximum memory for
optimal speed. The default value is 8. See zconf.h for total memory usage
as a function of windowBits and memLevel.
The strategy parameter is used to tune the compression algorithm. Use the
value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
string match), or Z_RLE to limit match distances to one (run-length
encoding). Filtered data consists mostly of small values with a somewhat
random distribution. In this case, the compression algorithm is tuned to
compress them better. The effect of Z_FILTERED is to force more Huffman
coding and less string matching; it is somewhat intermediate between
Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as
fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The
strategy parameter only affects the compression ratio but not the
correctness of the compressed output even if it is not set appropriately.
Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler
decoder for special applications.
deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid
method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is
incompatible with the version assumed by the caller (ZLIB_VERSION). msg is
set to null if there is no error message. deflateInit2 does not perform any
compression: this will be done by deflate().
*/
ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
const Bytef *dictionary,
uInt dictLength));
/*
Initializes the compression dictionary from the given byte sequence
without producing any compressed output. When using the zlib format, this
function must be called immediately after deflateInit, deflateInit2 or
deflateReset, and before any call of deflate. When doing raw deflate, this
function must be called either before any call of deflate, or immediately
after the completion of a deflate block, i.e. after all input has been
consumed and all output has been delivered when using any of the flush
options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH. The
compressor and decompressor must use exactly the same dictionary (see
inflateSetDictionary).
The dictionary should consist of strings (byte sequences) that are likely
to be encountered later in the data to be compressed, with the most commonly
used strings preferably put towards the end of the dictionary. Using a
dictionary is most useful when the data to be compressed is short and can be
predicted with good accuracy; the data can then be compressed better than
with the default empty dictionary.
Depending on the size of the compression data structures selected by
deflateInit or deflateInit2, a part of the dictionary may in effect be
discarded, for example if the dictionary is larger than the window size
provided in deflateInit or deflateInit2. Thus the strings most likely to be
useful should be put at the end of the dictionary, not at the front. In
addition, the current implementation of deflate will use at most the window
size minus 262 bytes of the provided dictionary.
Upon return of this function, strm->adler is set to the Adler-32 value
of the dictionary; the decompressor may later use this value to determine
which dictionary has been used by the compressor. (The Adler-32 value
applies to the whole dictionary even if only a subset of the dictionary is
actually used by the compressor.) If a raw deflate was requested, then the
Adler-32 value is not computed and strm->adler is not set.
deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is
inconsistent (for example if deflate has already been called for this stream
or if not at a block boundary for raw deflate). deflateSetDictionary does
not perform any compression: this will be done by deflate().
*/
ZEXTERN int ZEXPORT deflateGetDictionary OF((z_streamp strm,
Bytef *dictionary,
uInt *dictLength));
/*
Returns the sliding dictionary being maintained by deflate. dictLength is
set to the number of bytes in the dictionary, and that many bytes are copied
to dictionary. dictionary must have enough space, where 32768 bytes is
always enough. If deflateGetDictionary() is called with dictionary equal to
Z_NULL, then only the dictionary length is returned, and nothing is copied.
Similary, if dictLength is Z_NULL, then it is not set.
deflateGetDictionary() may return a length less than the window size, even
when more than the window size in input has been provided. It may return up
to 258 bytes less in that case, due to how zlib's implementation of deflate
manages the sliding window and lookahead for matches, where matches can be
up to 258 bytes long. If the application needs the last window-size bytes of
input, then that would need to be saved by the application outside of zlib.
deflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
stream state is inconsistent.
*/
ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
z_streamp source));
/*
Sets the destination stream as a complete copy of the source stream.
This function can be useful when several compression strategies will be
tried, for example when there are several ways of pre-processing the input
data with a filter. The streams that will be discarded should then be freed
by calling deflateEnd. Note that deflateCopy duplicates the internal
compression state which can be quite large, so this strategy is slow and can
consume lots of memory.
deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
(such as zalloc being Z_NULL). msg is left unchanged in both source and
destination.
*/
ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
/*
This function is equivalent to deflateEnd followed by deflateInit, but
does not free and reallocate the internal compression state. The stream
will leave the compression level and any other attributes that may have been
set unchanged.
deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent (such as zalloc or state being Z_NULL).
*/
ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
int level,
int strategy));
/*
Dynamically update the compression level and compression strategy. The
interpretation of level and strategy is as in deflateInit2(). This can be
used to switch between compression and straight copy of the input data, or
to switch to a different kind of input data requiring a different strategy.
If the compression approach (which is a function of the level) or the
strategy is changed, and if any input has been consumed in a previous
deflate() call, then the input available so far is compressed with the old
level and strategy using deflate(strm, Z_BLOCK). There are three approaches
for the compression levels 0, 1..3, and 4..9 respectively. The new level
and strategy will take effect at the next call of deflate().
If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does
not have enough output space to complete, then the parameter change will not
take effect. In this case, deflateParams() can be called again with the
same parameters and more output space to try again.
In order to assure a change in the parameters on the first try, the
deflate stream should be flushed using deflate() with Z_BLOCK or other flush
request until strm.avail_out is not zero, before calling deflateParams().
Then no more input data should be provided before the deflateParams() call.
If this is done, the old level and strategy will be applied to the data
compressed before deflateParams(), and the new level and strategy will be
applied to the the data compressed after deflateParams().
deflateParams returns Z_OK on success, Z_STREAM_ERROR if the source stream
state was inconsistent or if a parameter was invalid, or Z_BUF_ERROR if
there was not enough output space to complete the compression of the
available input data before a change in the strategy or approach. Note that
in the case of a Z_BUF_ERROR, the parameters are not changed. A return
value of Z_BUF_ERROR is not fatal, in which case deflateParams() can be
retried with more output space.
*/
ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
int good_length,
int max_lazy,
int nice_length,
int max_chain));
/*
Fine tune deflate's internal compression parameters. This should only be
used by someone who understands the algorithm used by zlib's deflate for
searching for the best matching string, and even then only by the most
fanatic optimizer trying to squeeze out the last compressed bit for their
specific input data. Read the deflate.c source code for the meaning of the
max_lazy, good_length, nice_length, and max_chain parameters.
deflateTune() can be called after deflateInit() or deflateInit2(), and
returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
*/
ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
uLong sourceLen));
/*
deflateBound() returns an upper bound on the compressed size after
deflation of sourceLen bytes. It must be called after deflateInit() or
deflateInit2(), and after deflateSetHeader(), if used. This would be used
to allocate an output buffer for deflation in a single pass, and so would be
called before deflate(). If that first deflate() call is provided the
sourceLen input bytes, an output buffer allocated to the size returned by
deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed
to return Z_STREAM_END. Note that it is possible for the compressed size to
be larger than the value returned by deflateBound() if flush options other
than Z_FINISH or Z_NO_FLUSH are used.
*/
ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm,
unsigned *pending,
int *bits));
/*
deflatePending() returns the number of bytes and bits of output that have
been generated, but not yet provided in the available output. The bytes not
provided would be due to the available output space having being consumed.
The number of bits of output not provided are between 0 and 7, where they
await more bits to join them in order to fill out a full byte. If pending
or bits are Z_NULL, then those values are not set.
deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
int bits,
int value));
/*
deflatePrime() inserts bits in the deflate output stream. The intent
is that this function is used to start off the deflate output with the bits
leftover from a previous deflate stream when appending to it. As such, this
function can only be used for raw deflate, and must be used before the first
deflate() call after a deflateInit2() or deflateReset(). bits must be less
than or equal to 16, and that many of the least significant bits of value
will be inserted in the output.
deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough
room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the
source stream state was inconsistent.
*/
ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
gz_headerp head));
/*
deflateSetHeader() provides gzip header information for when a gzip
stream is requested by deflateInit2(). deflateSetHeader() may be called
after deflateInit2() or deflateReset() and before the first call of
deflate(). The text, time, os, extra field, name, and comment information
in the provided gz_header structure are written to the gzip header (xflag is
ignored -- the extra flags are set according to the compression level). The
caller must assure that, if not Z_NULL, name and comment are terminated with
a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
available there. If hcrc is true, a gzip header crc is included. Note that
the current versions of the command-line version of gzip (up through version
1.3.x) do not support header crc's, and will report that it is a "multi-part
gzip file" and give up.
If deflateSetHeader is not used, the default gzip header has text false,
the time set to zero, and os set to 255, with no extra, name, or comment
fields. The gzip header is returned to the default state by deflateReset().
deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
/*
ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
int windowBits));
This is another version of inflateInit with an extra parameter. The
fields next_in, avail_in, zalloc, zfree and opaque must be initialized
before by the caller.
The windowBits parameter is the base two logarithm of the maximum window
size (the size of the history buffer). It should be in the range 8..15 for
this version of the library. The default value is 15 if inflateInit is used
instead. windowBits must be greater than or equal to the windowBits value
provided to deflateInit2() while compressing, or it must be equal to 15 if
deflateInit2() was not used. If a compressed stream with a larger window
size is given as input, inflate() will return with the error code
Z_DATA_ERROR instead of trying to allocate a larger window.
windowBits can also be zero to request that inflate use the window size in
the zlib header of the compressed stream.
windowBits can also be -8..-15 for raw inflate. In this case, -windowBits
determines the window size. inflate() will then process raw deflate data,
not looking for a zlib or gzip header, not generating a check value, and not
looking for any check values for comparison at the end of the stream. This
is for use with other formats that use the deflate compressed data format
such as zip. Those formats provide their own check values. If a custom
format is developed using the raw deflate format for compressed data, it is
recommended that a check value such as an Adler-32 or a CRC-32 be applied to
the uncompressed data as is done in the zlib, gzip, and zip formats. For
most applications, the zlib format should be used as is. Note that comments
above on the use in deflateInit2() applies to the magnitude of windowBits.
windowBits can also be greater than 15 for optional gzip decoding. Add
32 to windowBits to enable zlib and gzip decoding with automatic header
detection, or add 16 to decode only the gzip format (the zlib format will
return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a
CRC-32 instead of an Adler-32. Unlike the gunzip utility and gzread() (see
below), inflate() will not automatically decode concatenated gzip streams.
inflate() will return Z_STREAM_END at the end of the gzip stream. The state
would need to be reset to continue decoding a subsequent gzip stream.
inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
version assumed by the caller, or Z_STREAM_ERROR if the parameters are
invalid, such as a null pointer to the structure. msg is set to null if
there is no error message. inflateInit2 does not perform any decompression
apart from possibly reading the zlib header if present: actual decompression
will be done by inflate(). (So next_in and avail_in may be modified, but
next_out and avail_out are unused and unchanged.) The current implementation
of inflateInit2() does not process any header information -- that is
deferred until inflate() is called.
*/
ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
const Bytef *dictionary,
uInt dictLength));
/*
Initializes the decompression dictionary from the given uncompressed byte
sequence. This function must be called immediately after a call of inflate,
if that call returned Z_NEED_DICT. The dictionary chosen by the compressor
can be determined from the Adler-32 value returned by that call of inflate.
The compressor and decompressor must use exactly the same dictionary (see
deflateSetDictionary). For raw inflate, this function can be called at any
time to set the dictionary. If the provided dictionary is smaller than the
window and there is already data in the window, then the provided dictionary
will amend what's there. The application must insure that the dictionary
that was used for compression is provided.
inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is
inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
expected one (incorrect Adler-32 value). inflateSetDictionary does not
perform any decompression: this will be done by subsequent calls of
inflate().
*/
ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
Bytef *dictionary,
uInt *dictLength));
/*
Returns the sliding dictionary being maintained by inflate. dictLength is
set to the number of bytes in the dictionary, and that many bytes are copied
to dictionary. dictionary must have enough space, where 32768 bytes is
always enough. If inflateGetDictionary() is called with dictionary equal to
Z_NULL, then only the dictionary length is returned, and nothing is copied.
Similary, if dictLength is Z_NULL, then it is not set.
inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
stream state is inconsistent.
*/
ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
/*
Skips invalid compressed data until a possible full flush point (see above
for the description of deflate with Z_FULL_FLUSH) can be found, or until all
available input is skipped. No output is provided.
inflateSync searches for a 00 00 FF FF pattern in the compressed data.
All full flush points have this pattern, but not all occurrences of this
pattern are full flush points.
inflateSync returns Z_OK if a possible full flush point has been found,
Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point
has been found, or Z_STREAM_ERROR if the stream structure was inconsistent.
In the success case, the application may save the current current value of
total_in which indicates where valid compressed data was found. In the
error case, the application may repeatedly call inflateSync, providing more
input each time, until success or end of the input data.
*/
ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
z_streamp source));
/*
Sets the destination stream as a complete copy of the source stream.
This function can be useful when randomly accessing a large stream. The
first pass through the stream can periodically record the inflate state,
allowing restarting inflate at those points when randomly accessing the
stream.
inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
(such as zalloc being Z_NULL). msg is left unchanged in both source and
destination.
*/
ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
/*
This function is equivalent to inflateEnd followed by inflateInit,
but does not free and reallocate the internal decompression state. The
stream will keep attributes that may have been set by inflateInit2.
inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent (such as zalloc or state being Z_NULL).
*/
ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,
int windowBits));
/*
This function is the same as inflateReset, but it also permits changing
the wrap and window size requests. The windowBits parameter is interpreted
the same as it is for inflateInit2. If the window size is changed, then the
memory allocated for the window is freed, and the window will be reallocated
by inflate() if needed.
inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent (such as zalloc or state being Z_NULL), or if
the windowBits parameter is invalid.
*/
ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
int bits,
int value));
/*
This function inserts bits in the inflate input stream. The intent is
that this function is used to start inflating at a bit position in the
middle of a byte. The provided bits will be used before any bytes are used
from next_in. This function should only be used with raw inflate, and
should be used before the first inflate() call after inflateInit2() or
inflateReset(). bits must be less than or equal to 16, and that many of the
least significant bits of value will be inserted in the input.
If bits is negative, then the input stream bit buffer is emptied. Then
inflatePrime() can be called again to put bits in the buffer. This is used
to clear out bits leftover after feeding inflate a block description prior
to feeding inflate codes.
inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));
/*
This function returns two values, one in the lower 16 bits of the return
value, and the other in the remaining upper bits, obtained by shifting the
return value down 16 bits. If the upper value is -1 and the lower value is
zero, then inflate() is currently decoding information outside of a block.
If the upper value is -1 and the lower value is non-zero, then inflate is in
the middle of a stored block, with the lower value equaling the number of
bytes from the input remaining to copy. If the upper value is not -1, then
it is the number of bits back from the current bit position in the input of
the code (literal or length/distance pair) currently being processed. In
that case the lower value is the number of bytes already emitted for that
code.
A code is being processed if inflate is waiting for more input to complete
decoding of the code, or if it has completed decoding but is waiting for
more output space to write the literal or match data.
inflateMark() is used to mark locations in the input data for random
access, which may be at bit positions, and to note those cases where the
output of a code may span boundaries of random access blocks. The current
location in the input stream can be determined from avail_in and data_type
as noted in the description for the Z_BLOCK flush parameter for inflate.
inflateMark returns the value noted above, or -65536 if the provided
source stream state was inconsistent.
*/
ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
gz_headerp head));
/*
inflateGetHeader() requests that gzip header information be stored in the
provided gz_header structure. inflateGetHeader() may be called after
inflateInit2() or inflateReset(), and before the first call of inflate().
As inflate() processes the gzip stream, head->done is zero until the header
is completed, at which time head->done is set to one. If a zlib stream is
being decoded, then head->done is set to -1 to indicate that there will be
no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be
used to force inflate() to return immediately after header processing is
complete and before any actual data is decompressed.
The text, time, xflags, and os fields are filled in with the gzip header
contents. hcrc is set to true if there is a header CRC. (The header CRC
was valid if done is set to one.) If extra is not Z_NULL, then extra_max
contains the maximum number of bytes to write to extra. Once done is true,
extra_len contains the actual extra field length, and extra contains the
extra field, or that field truncated if extra_max is less than extra_len.
If name is not Z_NULL, then up to name_max characters are written there,
terminated with a zero unless the length is greater than name_max. If
comment is not Z_NULL, then up to comm_max characters are written there,
terminated with a zero unless the length is greater than comm_max. When any
of extra, name, or comment are not Z_NULL and the respective field is not
present in the header, then that field is set to Z_NULL to signal its
absence. This allows the use of deflateSetHeader() with the returned
structure to duplicate the header. However if those fields are set to
allocated memory, then the application will need to save those pointers
elsewhere so that they can be eventually freed.
If inflateGetHeader is not used, then the header information is simply
discarded. The header is always checked for validity, including the header
CRC if present. inflateReset() will reset the process to discard the header
information. The application would need to call inflateGetHeader() again to
retrieve the header from the next gzip stream.
inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
/*
ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
unsigned char FAR *window));
Initialize the internal stream state for decompression using inflateBack()
calls. The fields zalloc, zfree and opaque in strm must be initialized
before the call. If zalloc and zfree are Z_NULL, then the default library-
derived memory allocation routines are used. windowBits is the base two
logarithm of the window size, in the range 8..15. window is a caller
supplied buffer of that size. Except for special applications where it is
assured that deflate was used with small window sizes, windowBits must be 15
and a 32K byte window must be supplied to be able to decompress general
deflate streams.
See inflateBack() for the usage of these routines.
inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
the parameters are invalid, Z_MEM_ERROR if the internal state could not be
allocated, or Z_VERSION_ERROR if the version of the library does not match
the version of the header file.
*/
typedef unsigned (*in_func) OF((void FAR *,
z_const unsigned char FAR * FAR *));
typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
in_func in, void FAR *in_desc,
out_func out, void FAR *out_desc));
/*
inflateBack() does a raw inflate with a single call using a call-back
interface for input and output. This is potentially more efficient than
inflate() for file i/o applications, in that it avoids copying between the
output and the sliding window by simply making the window itself the output
buffer. inflate() can be faster on modern CPUs when used with large
buffers. inflateBack() trusts the application to not change the output
buffer passed by the output function, at least until inflateBack() returns.
inflateBackInit() must be called first to allocate the internal state
and to initialize the state with the user-provided window buffer.
inflateBack() may then be used multiple times to inflate a complete, raw
deflate stream with each call. inflateBackEnd() is then called to free the
allocated state.
A raw deflate stream is one with no zlib or gzip header or trailer.
This routine would normally be used in a utility that reads zip or gzip
files and writes out uncompressed files. The utility would decode the
header and process the trailer on its own, hence this routine expects only
the raw deflate stream to decompress. This is different from the default
behavior of inflate(), which expects a zlib header and trailer around the
deflate stream.
inflateBack() uses two subroutines supplied by the caller that are then
called by inflateBack() for input and output. inflateBack() calls those
routines until it reads a complete deflate stream and writes out all of the
uncompressed data, or until it encounters an error. The function's
parameters and return types are defined above in the in_func and out_func
typedefs. inflateBack() will call in(in_desc, &buf) which should return the
number of bytes of provided input, and a pointer to that input in buf. If
there is no input available, in() must return zero -- buf is ignored in that
case -- and inflateBack() will return a buffer error. inflateBack() will
call out(out_desc, buf, len) to write the uncompressed data buf[0..len-1].
out() should return zero on success, or non-zero on failure. If out()
returns non-zero, inflateBack() will return with an error. Neither in() nor
out() are permitted to change the contents of the window provided to
inflateBackInit(), which is also the buffer that out() uses to write from.
The length written by out() will be at most the window size. Any non-zero
amount of input may be provided by in().
For convenience, inflateBack() can be provided input on the first call by
setting strm->next_in and strm->avail_in. If that input is exhausted, then
in() will be called. Therefore strm->next_in must be initialized before
calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called
immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in
must also be initialized, and then if strm->avail_in is not zero, input will
initially be taken from strm->next_in[0 .. strm->avail_in - 1].
The in_desc and out_desc parameters of inflateBack() is passed as the
first parameter of in() and out() respectively when they are called. These
descriptors can be optionally used to pass any information that the caller-
supplied in() and out() functions need to do their job.
On return, inflateBack() will set strm->next_in and strm->avail_in to
pass back any unused input that was provided by the last in() call. The
return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
if in() or out() returned an error, Z_DATA_ERROR if there was a format error
in the deflate stream (in which case strm->msg is set to indicate the nature
of the error), or Z_STREAM_ERROR if the stream was not properly initialized.
In the case of Z_BUF_ERROR, an input or output error can be distinguished
using strm->next_in which will be Z_NULL only if in() returned an error. If
strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning
non-zero. (in() will always be called before out(), so strm->next_in is
assured to be defined if out() returns non-zero.) Note that inflateBack()
cannot return Z_OK.
*/
ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
/*
All memory allocated by inflateBackInit() is freed.
inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
state was inconsistent.
*/
ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
/* Return flags indicating compile-time options.
Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
1.0: size of uInt
3.2: size of uLong
5.4: size of voidpf (pointer)
7.6: size of z_off_t
Compiler, assembler, and debug options:
8: ZLIB_DEBUG
9: ASMV or ASMINF -- use ASM code
10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
11: 0 (reserved)
One-time table building (smaller code, but not thread-safe if true):
12: BUILDFIXED -- build static block decoding tables when needed
13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
14,15: 0 (reserved)
Library content (indicates missing functionality):
16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
deflate code when not needed)
17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
and decode gzip streams (to avoid linking crc code)
18-19: 0 (reserved)
Operation variations (changes in library functionality):
20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
21: FASTEST -- deflate algorithm with only one, lowest compression level
22,23: 0 (reserved)
The sprintf variant used by gzprintf (zero is best):
24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
26: 0 = returns value, 1 = void -- 1 means inferred string length returned
Remainder:
27-31: 0 (reserved)
*/
#ifndef Z_SOLO
/* utility functions */
/*
The following utility functions are implemented on top of the basic
stream-oriented functions. To simplify the interface, some default options
are assumed (compression level and memory usage, standard memory allocation
functions). The source code of these utility functions can be modified if
you need special options.
*/
ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen));
/*
Compresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total size
of the destination buffer, which must be at least the value returned by
compressBound(sourceLen). Upon exit, destLen is the actual size of the
compressed data. compress() is equivalent to compress2() with a level
parameter of Z_DEFAULT_COMPRESSION.
compress returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_BUF_ERROR if there was not enough room in the output
buffer.
*/
ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen,
int level));
/*
Compresses the source buffer into the destination buffer. The level
parameter has the same meaning as in deflateInit. sourceLen is the byte
length of the source buffer. Upon entry, destLen is the total size of the
destination buffer, which must be at least the value returned by
compressBound(sourceLen). Upon exit, destLen is the actual size of the
compressed data.
compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_BUF_ERROR if there was not enough room in the output buffer,
Z_STREAM_ERROR if the level parameter is invalid.
*/
ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
/*
compressBound() returns an upper bound on the compressed size after
compress() or compress2() on sourceLen bytes. It would be used before a
compress() or compress2() call to allocate the destination buffer.
*/
ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen));
/*
Decompresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total size
of the destination buffer, which must be large enough to hold the entire
uncompressed data. (The size of the uncompressed data must have been saved
previously by the compressor and transmitted to the decompressor by some
mechanism outside the scope of this compression library.) Upon exit, destLen
is the actual size of the uncompressed data.
uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_BUF_ERROR if there was not enough room in the output
buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete. In
the case where there is not enough room, uncompress() will fill the output
buffer with the uncompressed data up to that point.
*/
ZEXTERN int ZEXPORT uncompress2 OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen));
/*
Same as uncompress, except that sourceLen is a pointer, where the
length of the source is *sourceLen. On return, *sourceLen is the number of
source bytes consumed.
*/
/* gzip file access functions */
/*
This library supports reading and writing files in gzip (.gz) format with
an interface similar to that of stdio, using the functions that start with
"gz". The gzip format is different from the zlib format. gzip is a gzip
wrapper, documented in RFC 1952, wrapped around a deflate stream.
*/
typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */
/*
ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
Opens a gzip (.gz) file for reading or writing. The mode parameter is as
in fopen ("rb" or "wb") but can also include a compression level ("wb9") or
a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only
compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F'
for fixed code compression as in "wb9F". (See the description of
deflateInit2 for more information about the strategy parameter.) 'T' will
request transparent writing or appending with no compression and not using
the gzip format.
"a" can be used instead of "w" to request that the gzip stream that will
be written be appended to the file. "+" will result in an error, since
reading and writing to the same gzip file is not supported. The addition of
"x" when writing will create the file exclusively, which fails if the file
already exists. On systems that support it, the addition of "e" when
reading or writing will set the flag to close the file on an execve() call.
These functions, as well as gzip, will read and decode a sequence of gzip
streams in a file. The append function of gzopen() can be used to create
such a file. (Also see gzflush() for another way to do this.) When
appending, gzopen does not test whether the file begins with a gzip stream,
nor does it look for the end of the gzip streams to begin appending. gzopen
will simply append a gzip stream to the existing file.
gzopen can be used to read a file which is not in gzip format; in this
case gzread will directly read from the file without decompression. When
reading, this will be detected automatically by looking for the magic two-
byte gzip header.
gzopen returns NULL if the file could not be opened, if there was
insufficient memory to allocate the gzFile state, or if an invalid mode was
specified (an 'r', 'w', or 'a' was not provided, or '+' was provided).
errno can be checked to determine if the reason gzopen failed was that the
file could not be opened.
*/
ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
/*
gzdopen associates a gzFile with the file descriptor fd. File descriptors
are obtained from calls like open, dup, creat, pipe or fileno (if the file
has been previously opened with fopen). The mode parameter is as in gzopen.
The next call of gzclose on the returned gzFile will also close the file
descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor
fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,
mode);. The duplicated descriptor should be saved to avoid a leak, since
gzdopen does not close fd if it fails. If you are using fileno() to get the
file descriptor from a FILE *, then you will have to use dup() to avoid
double-close()ing the file descriptor. Both gzclose() and fclose() will
close the associated file descriptor, so they need to have different file
descriptors.
gzdopen returns NULL if there was insufficient memory to allocate the
gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not
provided, or '+' was provided), or if fd is -1. The file descriptor is not
used until the next gz* read, write, seek, or close operation, so gzdopen
will not detect if fd is invalid (unless fd is -1).
*/
ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));
/*
Set the internal buffer size used by this library's functions. The
default buffer size is 8192 bytes. This function must be called after
gzopen() or gzdopen(), and before any other calls that read or write the
file. The buffer memory allocation is always deferred to the first read or
write. Three times that size in buffer space is allocated. A larger buffer
size of, for example, 64K or 128K bytes will noticeably increase the speed
of decompression (reading).
The new buffer size also affects the maximum length for gzprintf().
gzbuffer() returns 0 on success, or -1 on failure, such as being called
too late.
*/
ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
/*
Dynamically update the compression level or strategy. See the description
of deflateInit2 for the meaning of these parameters. Previously provided
data is flushed before the parameter change.
gzsetparams returns Z_OK if success, Z_STREAM_ERROR if the file was not
opened for writing, Z_ERRNO if there is an error writing the flushed data,
or Z_MEM_ERROR if there is a memory allocation error.
*/
ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
/*
Reads the given number of uncompressed bytes from the compressed file. If
the input file is not in gzip format, gzread copies the given number of
bytes into the buffer directly from the file.
After reaching the end of a gzip stream in the input, gzread will continue
to read, looking for another gzip stream. Any number of gzip streams may be
concatenated in the input file, and will all be decompressed by gzread().
If something other than a gzip stream is encountered after a gzip stream,
that remaining trailing garbage is ignored (and no error is returned).
gzread can be used to read a gzip file that is being concurrently written.
Upon reaching the end of the input, gzread will return with the available
data. If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then
gzclearerr can be used to clear the end of file indicator in order to permit
gzread to be tried again. Z_OK indicates that a gzip stream was completed
on the last gzread. Z_BUF_ERROR indicates that the input file ended in the
middle of a gzip stream. Note that gzread does not return -1 in the event
of an incomplete gzip stream. This error is deferred until gzclose(), which
will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip
stream. Alternatively, gzerror can be used before gzclose to detect this
case.
gzread returns the number of uncompressed bytes actually read, less than
len for end of file, or -1 for error. If len is too large to fit in an int,
then nothing is read, -1 is returned, and the error state is set to
Z_STREAM_ERROR.
*/
ZEXTERN z_size_t ZEXPORT gzfread OF((voidp buf, z_size_t size, z_size_t nitems,
gzFile file));
/*
Read up to nitems items of size size from file to buf, otherwise operating
as gzread() does. This duplicates the interface of stdio's fread(), with
size_t request and return types. If the library defines size_t, then
z_size_t is identical to size_t. If not, then z_size_t is an unsigned
integer type that can contain a pointer.
gzfread() returns the number of full items read of size size, or zero if
the end of the file was reached and a full item could not be read, or if
there was an error. gzerror() must be consulted if zero is returned in
order to determine if there was an error. If the multiplication of size and
nitems overflows, i.e. the product does not fit in a z_size_t, then nothing
is read, zero is returned, and the error state is set to Z_STREAM_ERROR.
In the event that the end of file is reached and only a partial item is
available at the end, i.e. the remaining uncompressed data length is not a
multiple of size, then the final partial item is nevetheless read into buf
and the end-of-file flag is set. The length of the partial item read is not
provided, but could be inferred from the result of gztell(). This behavior
is the same as the behavior of fread() implementations in common libraries,
but it prevents the direct use of gzfread() to read a concurrently written
file, reseting and retrying on end-of-file, when size is not 1.
*/
ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
voidpc buf, unsigned len));
/*
Writes the given number of uncompressed bytes into the compressed file.
gzwrite returns the number of uncompressed bytes written or 0 in case of
error.
*/
ZEXTERN z_size_t ZEXPORT gzfwrite OF((voidpc buf, z_size_t size,
z_size_t nitems, gzFile file));
/*
gzfwrite() writes nitems items of size size from buf to file, duplicating
the interface of stdio's fwrite(), with size_t request and return types. If
the library defines size_t, then z_size_t is identical to size_t. If not,
then z_size_t is an unsigned integer type that can contain a pointer.
gzfwrite() returns the number of full items written of size size, or zero
if there was an error. If the multiplication of size and nitems overflows,
i.e. the product does not fit in a z_size_t, then nothing is written, zero
is returned, and the error state is set to Z_STREAM_ERROR.
*/
ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
/*
Converts, formats, and writes the arguments to the compressed file under
control of the format string, as in fprintf. gzprintf returns the number of
uncompressed bytes actually written, or a negative zlib error code in case
of error. The number of uncompressed bytes written is limited to 8191, or
one less than the buffer size given to gzbuffer(). The caller should assure
that this limit is not exceeded. If it is exceeded, then gzprintf() will
return an error (0) with nothing written. In this case, there may also be a
buffer overflow with unpredictable consequences, which is possible only if
zlib was compiled with the insecure functions sprintf() or vsprintf()
because the secure snprintf() or vsnprintf() functions were not available.
This can be determined using zlibCompileFlags().
*/
ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
/*
Writes the given null-terminated string to the compressed file, excluding
the terminating null character.
gzputs returns the number of characters written, or -1 in case of error.
*/
ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
/*
Reads bytes from the compressed file until len-1 characters are read, or a
newline character is read and transferred to buf, or an end-of-file
condition is encountered. If any characters are read or if len == 1, the
string is terminated with a null character. If no characters are read due
to an end-of-file or len < 1, then the buffer is left untouched.
gzgets returns buf which is a null-terminated string, or it returns NULL
for end-of-file or in case of error. If there was an error, the contents at
buf are indeterminate.
*/
ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
/*
Writes c, converted to an unsigned char, into the compressed file. gzputc
returns the value that was written, or -1 in case of error.
*/
ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
/*
Reads one byte from the compressed file. gzgetc returns this byte or -1
in case of end of file or error. This is implemented as a macro for speed.
As such, it does not do all of the checking the other functions do. I.e.
it does not check to see if file is NULL, nor whether the structure file
points to has been clobbered or not.
*/
ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
/*
Push one character back onto the stream to be read as the first character
on the next read. At least one character of push-back is allowed.
gzungetc() returns the character pushed, or -1 on failure. gzungetc() will
fail if c is -1, and may fail if a character has been pushed but not read
yet. If gzungetc is used immediately after gzopen or gzdopen, at least the
output buffer size of pushed characters is allowed. (See gzbuffer above.)
The pushed character will be discarded if the stream is repositioned with
gzseek() or gzrewind().
*/
ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
/*
Flushes all pending output into the compressed file. The parameter flush
is as in the deflate() function. The return value is the zlib error number
(see function gzerror below). gzflush is only permitted when writing.
If the flush parameter is Z_FINISH, the remaining data is written and the
gzip stream is completed in the output. If gzwrite() is called again, a new
gzip stream will be started in the output. gzread() is able to read such
concatenated gzip streams.
gzflush should be called only when strictly necessary because it will
degrade compression if called too often.
*/
/*
ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
z_off_t offset, int whence));
Sets the starting position for the next gzread or gzwrite on the given
compressed file. The offset represents a number of bytes in the
uncompressed data stream. The whence parameter is defined as in lseek(2);
the value SEEK_END is not supported.
If the file is opened for reading, this function is emulated but can be
extremely slow. If the file is opened for writing, only forward seeks are
supported; gzseek then compresses a sequence of zeroes up to the new
starting position.
gzseek returns the resulting offset location as measured in bytes from
the beginning of the uncompressed stream, or -1 in case of error, in
particular if the file is opened for writing and the new starting position
would be before the current position.
*/
ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
/*
Rewinds the given file. This function is supported only for reading.
gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
*/
/*
ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
Returns the starting position for the next gzread or gzwrite on the given
compressed file. This position represents a number of bytes in the
uncompressed data stream, and is zero when starting, even if appending or
reading a gzip stream from the middle of a file using gzdopen().
gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
*/
/*
ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));
Returns the current offset in the file being read or written. This offset
includes the count of bytes that precede the gzip stream, for example when
appending or when using gzdopen() for reading. When reading, the offset
does not include as yet unused buffered input. This information can be used
for a progress indicator. On error, gzoffset() returns -1.
*/
ZEXTERN int ZEXPORT gzeof OF((gzFile file));
/*
Returns true (1) if the end-of-file indicator has been set while reading,
false (0) otherwise. Note that the end-of-file indicator is set only if the
read tried to go past the end of the input, but came up short. Therefore,
just like feof(), gzeof() may return false even if there is no more data to
read, in the event that the last read request was for the exact number of
bytes remaining in the input file. This will happen if the input file size
is an exact multiple of the buffer size.
If gzeof() returns true, then the read functions will return no more data,
unless the end-of-file indicator is reset by gzclearerr() and the input file
has grown since the previous end of file was detected.
*/
ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
/*
Returns true (1) if file is being copied directly while reading, or false
(0) if file is a gzip stream being decompressed.
If the input file is empty, gzdirect() will return true, since the input
does not contain a gzip stream.
If gzdirect() is used immediately after gzopen() or gzdopen() it will
cause buffers to be allocated to allow reading the file to determine if it
is a gzip file. Therefore if gzbuffer() is used, it should be called before
gzdirect().
When writing, gzdirect() returns true (1) if transparent writing was
requested ("wT" for the gzopen() mode), or false (0) otherwise. (Note:
gzdirect() is not needed when writing. Transparent writing must be
explicitly requested, so the application already knows the answer. When
linking statically, using gzdirect() will include all of the zlib code for
gzip file reading and decompression, which may not be desired.)
*/
ZEXTERN int ZEXPORT gzclose OF((gzFile file));
/*
Flushes all pending output if necessary, closes the compressed file and
deallocates the (de)compression state. Note that once file is closed, you
cannot call gzerror with file, since its structures have been deallocated.
gzclose must not be called more than once on the same file, just as free
must not be called more than once on the same allocation.
gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a
file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the
last read ended in the middle of a gzip stream, or Z_OK on success.
*/
ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));
ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));
/*
Same as gzclose(), but gzclose_r() is only for use when reading, and
gzclose_w() is only for use when writing or appending. The advantage to
using these instead of gzclose() is that they avoid linking in zlib
compression or decompression code that is not used when only reading or only
writing respectively. If gzclose() is used, then both compression and
decompression code will be included the application when linking to a static
zlib library.
*/
ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
/*
Returns the error message for the last error which occurred on the given
compressed file. errnum is set to zlib error number. If an error occurred
in the file system and not in the compression library, errnum is set to
Z_ERRNO and the application may consult errno to get the exact error code.
The application must not modify the returned string. Future calls to
this function may invalidate the previously returned string. If file is
closed, then the string previously returned by gzerror will no longer be
available.
gzerror() should be used to distinguish errors from end-of-file for those
functions above that do not distinguish those cases in their return values.
*/
ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
/*
Clears the error and end-of-file flags for file. This is analogous to the
clearerr() function in stdio. This is useful for continuing to read a gzip
file that is being written concurrently.
*/
#endif /* !Z_SOLO */
/* checksum functions */
/*
These functions are not related to compression but are exported
anyway because they might be useful in applications using the compression
library.
*/
ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
/*
Update a running Adler-32 checksum with the bytes buf[0..len-1] and
return the updated checksum. If buf is Z_NULL, this function returns the
required initial value for the checksum.
An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed
much faster.
Usage example:
uLong adler = adler32(0L, Z_NULL, 0);
while (read_buffer(buffer, length) != EOF) {
adler = adler32(adler, buffer, length);
}
if (adler != original_adler) error();
*/
ZEXTERN uLong ZEXPORT adler32_z OF((uLong adler, const Bytef *buf,
z_size_t len));
/*
Same as adler32(), but with a size_t length.
*/
/*
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
z_off_t len2));
Combine two Adler-32 checksums into one. For two sequences of bytes, seq1
and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of
seq1 and seq2 concatenated, requiring only adler1, adler2, and len2. Note
that the z_off_t type (like off_t) is a signed integer. If len2 is
negative, the result has no meaning or utility.
*/
ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
/*
Update a running CRC-32 with the bytes buf[0..len-1] and return the
updated CRC-32. If buf is Z_NULL, this function returns the required
initial value for the crc. Pre- and post-conditioning (one's complement) is
performed within this function so it shouldn't be done by the application.
Usage example:
uLong crc = crc32(0L, Z_NULL, 0);
while (read_buffer(buffer, length) != EOF) {
crc = crc32(crc, buffer, length);
}
if (crc != original_crc) error();
*/
ZEXTERN uLong ZEXPORT crc32_z OF((uLong adler, const Bytef *buf,
z_size_t len));
/*
Same as crc32(), but with a size_t length.
*/
/*
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
Combine two CRC-32 check values into one. For two sequences of bytes,
seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32
check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
len2.
*/
/* various hacks, don't look :) */
/* deflateInit and inflateInit are macros to allow checking the zlib version
* and the compiler's view of z_stream:
*/
ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
const char *version, int stream_size));
ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
const char *version, int stream_size));
ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
int windowBits, int memLevel,
int strategy, const char *version,
int stream_size));
ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
const char *version, int stream_size));
ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
unsigned char FAR *window,
const char *version,
int stream_size));
#ifdef Z_PREFIX_SET
# define z_deflateInit(strm, level) \
deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
# define z_inflateInit(strm) \
inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
# define z_deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
(strategy), ZLIB_VERSION, (int)sizeof(z_stream))
# define z_inflateInit2(strm, windowBits) \
inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
(int)sizeof(z_stream))
# define z_inflateBackInit(strm, windowBits, window) \
inflateBackInit_((strm), (windowBits), (window), \
ZLIB_VERSION, (int)sizeof(z_stream))
#else
# define deflateInit(strm, level) \
deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
# define inflateInit(strm) \
inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
# define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
(strategy), ZLIB_VERSION, (int)sizeof(z_stream))
# define inflateInit2(strm, windowBits) \
inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
(int)sizeof(z_stream))
# define inflateBackInit(strm, windowBits, window) \
inflateBackInit_((strm), (windowBits), (window), \
ZLIB_VERSION, (int)sizeof(z_stream))
#endif
#ifndef Z_SOLO
/* gzgetc() macro and its supporting function and exposed data structure. Note
* that the real internal state is much larger than the exposed structure.
* This abbreviated structure exposes just enough for the gzgetc() macro. The
* user should not mess with these exposed elements, since their names or
* behavior could change in the future, perhaps even capriciously. They can
* only be used by the gzgetc() macro. You have been warned.
*/
struct gzFile_s {
unsigned have;
unsigned char *next;
z_off64_t pos;
};
ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file)); /* backward compatibility */
#ifdef Z_PREFIX_SET
# undef z_gzgetc
# define z_gzgetc(g) \
((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g))
#else
# define gzgetc(g) \
((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g))
#endif
/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or
* change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if
* both are true, the application gets the *64 functions, and the regular
* functions are changed to 64 bits) -- in case these are set on systems
* without large file support, _LFS64_LARGEFILE must also be true
*/
#ifdef Z_LARGE64
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
#endif
#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64)
# ifdef Z_PREFIX_SET
# define z_gzopen z_gzopen64
# define z_gzseek z_gzseek64
# define z_gztell z_gztell64
# define z_gzoffset z_gzoffset64
# define z_adler32_combine z_adler32_combine64
# define z_crc32_combine z_crc32_combine64
# else
# define gzopen gzopen64
# define gzseek gzseek64
# define gztell gztell64
# define gzoffset gzoffset64
# define adler32_combine adler32_combine64
# define crc32_combine crc32_combine64
# endif
# ifndef Z_LARGE64
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
# endif
#else
ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));
ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int));
ZEXTERN z_off_t ZEXPORT gztell OF((gzFile));
ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
#endif
#else /* Z_SOLO */
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
#endif /* !Z_SOLO */
/* undocumented functions */
ZEXTERN const char * ZEXPORT zError OF((int));
ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp));
ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table OF((void));
ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int));
ZEXTERN int ZEXPORT inflateValidate OF((z_streamp, int));
ZEXTERN unsigned long ZEXPORT inflateCodesUsed OF ((z_streamp));
ZEXTERN int ZEXPORT inflateResetKeep OF((z_streamp));
ZEXTERN int ZEXPORT deflateResetKeep OF((z_streamp));
#if (defined(_WIN32) || defined(__CYGWIN__)) && !defined(Z_SOLO)
ZEXTERN gzFile ZEXPORT gzopen_w OF((const wchar_t *path,
const char *mode));
#endif
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
# ifndef Z_SOLO
ZEXTERN int ZEXPORTVA gzvprintf Z_ARG((gzFile file,
const char *format,
va_list va));
# endif
#endif
#ifdef __cplusplus
}
#endif
#endif /* ZLIB_H */
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/CMakeLists.txt
|
disable_warnings(implicit-fallthrough)
add_definitions(-DNO_VIZ -DSTDC -DNO_GZIP)
file(GLOB SRC_ZLIB "*.c" "*.h")
list(SORT SRC_ZLIB)
include_directories(".")
add_library(zlib OBJECT ${SRC_ZLIB})
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/inftrees.c
|
/* inftrees.c -- generate Huffman trees for efficient decoding
* Copyright (C) 1995-2017 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "zutil.h"
#include "inftrees.h"
#define MAXBITS 15
const char inflate_copyright[] =
" inflate 1.2.11 Copyright 1995-2017 Mark Adler ";
/*
If you use the zlib library in a product, an acknowledgment is welcome
in the documentation of your product. If for some reason you cannot
include such an acknowledgment, I would appreciate that you keep this
copyright string in the executable of your product.
*/
/*
Build a set of tables to decode the provided canonical Huffman code.
The code lengths are lens[0..codes-1]. The result starts at *table,
whose indices are 0..2^bits-1. work is a writable array of at least
lens shorts, which is used as a work area. type is the type of code
to be generated, CODES, LENS, or DISTS. On return, zero is success,
-1 is an invalid code, and +1 means that ENOUGH isn't enough. table
on return points to the next available entry's address. bits is the
requested root table index bits, and on return it is the actual root
table index bits. It will differ if the request is greater than the
longest code or if it is less than the shortest code.
*/
int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work)
codetype type;
unsigned short FAR *lens;
unsigned codes;
code FAR * FAR *table;
unsigned FAR *bits;
unsigned short FAR *work;
{
unsigned len; /* a code's length in bits */
unsigned sym; /* index of code symbols */
unsigned min, max; /* minimum and maximum code lengths */
unsigned root; /* number of index bits for root table */
unsigned curr; /* number of index bits for current table */
unsigned drop; /* code bits to drop for sub-table */
int left; /* number of prefix codes available */
unsigned used; /* code entries in table used */
unsigned huff; /* Huffman code */
unsigned incr; /* for incrementing code, index */
unsigned fill; /* index for replicating entries */
unsigned low; /* low bits for current root entry */
unsigned mask; /* mask for low root bits */
code here; /* table entry for duplication */
code FAR *next; /* next available space in table */
const unsigned short FAR *base; /* base value table to use */
const unsigned short FAR *extra; /* extra bits table to use */
unsigned match; /* use base and extra for symbol >= match */
unsigned short count[MAXBITS+1]; /* number of codes of each length */
unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
static const unsigned short lbase[31] = { /* Length codes 257..285 base */
3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
static const unsigned short lext[31] = { /* Length codes 257..285 extra */
16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 77, 202};
static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
8193, 12289, 16385, 24577, 0, 0};
static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
28, 28, 29, 29, 64, 64};
/*
Process a set of code lengths to create a canonical Huffman code. The
code lengths are lens[0..codes-1]. Each length corresponds to the
symbols 0..codes-1. The Huffman code is generated by first sorting the
symbols by length from short to long, and retaining the symbol order
for codes with equal lengths. Then the code starts with all zero bits
for the first code of the shortest length, and the codes are integer
increments for the same length, and zeros are appended as the length
increases. For the deflate format, these bits are stored backwards
from their more natural integer increment ordering, and so when the
decoding tables are built in the large loop below, the integer codes
are incremented backwards.
This routine assumes, but does not check, that all of the entries in
lens[] are in the range 0..MAXBITS. The caller must assure this.
1..MAXBITS is interpreted as that code length. zero means that that
symbol does not occur in this code.
The codes are sorted by computing a count of codes for each length,
creating from that a table of starting indices for each length in the
sorted table, and then entering the symbols in order in the sorted
table. The sorted table is work[], with that space being provided by
the caller.
The length counts are used for other purposes as well, i.e. finding
the minimum and maximum length codes, determining if there are any
codes at all, checking for a valid set of lengths, and looking ahead
at length counts to determine sub-table sizes when building the
decoding tables.
*/
/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
for (len = 0; len <= MAXBITS; len++)
count[len] = 0;
for (sym = 0; sym < codes; sym++)
count[lens[sym]]++;
/* bound code lengths, force root to be within code lengths */
root = *bits;
for (max = MAXBITS; max >= 1; max--)
if (count[max] != 0) break;
if (root > max) root = max;
if (max == 0) { /* no symbols to code at all */
here.op = (unsigned char)64; /* invalid code marker */
here.bits = (unsigned char)1;
here.val = (unsigned short)0;
*(*table)++ = here; /* make a table to force an error */
*(*table)++ = here;
*bits = 1;
return 0; /* no symbols, but wait for decoding to report error */
}
for (min = 1; min < max; min++)
if (count[min] != 0) break;
if (root < min) root = min;
/* check for an over-subscribed or incomplete set of lengths */
left = 1;
for (len = 1; len <= MAXBITS; len++) {
left <<= 1;
left -= count[len];
if (left < 0) return -1; /* over-subscribed */
}
if (left > 0 && (type == CODES || max != 1))
return -1; /* incomplete set */
/* generate offsets into symbol table for each length for sorting */
offs[1] = 0;
for (len = 1; len < MAXBITS; len++)
offs[len + 1] = offs[len] + count[len];
/* sort symbols by length, by symbol order within each length */
for (sym = 0; sym < codes; sym++)
if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
/*
Create and fill in decoding tables. In this loop, the table being
filled is at next and has curr index bits. The code being used is huff
with length len. That code is converted to an index by dropping drop
bits off of the bottom. For codes where len is less than drop + curr,
those top drop + curr - len bits are incremented through all values to
fill the table with replicated entries.
root is the number of index bits for the root table. When len exceeds
root, sub-tables are created pointed to by the root entry with an index
of the low root bits of huff. This is saved in low to check for when a
new sub-table should be started. drop is zero when the root table is
being filled, and drop is root when sub-tables are being filled.
When a new sub-table is needed, it is necessary to look ahead in the
code lengths to determine what size sub-table is needed. The length
counts are used for this, and so count[] is decremented as codes are
entered in the tables.
used keeps track of how many table entries have been allocated from the
provided *table space. It is checked for LENS and DIST tables against
the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
the initial root table size constants. See the comments in inftrees.h
for more information.
sym increments through all symbols, and the loop terminates when
all codes of length max, i.e. all codes, have been processed. This
routine permits incomplete codes, so another loop after this one fills
in the rest of the decoding tables with invalid code markers.
*/
/* set up for code type */
switch (type) {
case CODES:
base = extra = work; /* dummy value--not used */
match = 20;
break;
case LENS:
base = lbase;
extra = lext;
match = 257;
break;
default: /* DISTS */
base = dbase;
extra = dext;
match = 0;
}
/* initialize state for loop */
huff = 0; /* starting code */
sym = 0; /* starting code symbol */
len = min; /* starting code length */
next = *table; /* current table to fill in */
curr = root; /* current table index bits */
drop = 0; /* current bits to drop from code for index */
low = (unsigned)(-1); /* trigger new sub-table when len > root */
used = 1U << root; /* use root table entries */
mask = used - 1; /* mask for comparing low */
/* check available table space */
if ((type == LENS && used > ENOUGH_LENS) ||
(type == DISTS && used > ENOUGH_DISTS))
return 1;
/* process all codes and make table entries */
for (;;) {
/* create table entry */
here.bits = (unsigned char)(len - drop);
if (work[sym] + 1U < match) {
here.op = (unsigned char)0;
here.val = work[sym];
}
else if (work[sym] >= match) {
here.op = (unsigned char)(extra[work[sym] - match]);
here.val = base[work[sym] - match];
}
else {
here.op = (unsigned char)(32 + 64); /* end of block */
here.val = 0;
}
/* replicate for those indices with low len bits equal to huff */
incr = 1U << (len - drop);
fill = 1U << curr;
min = fill; /* save offset to next table */
do {
fill -= incr;
next[(huff >> drop) + fill] = here;
} while (fill != 0);
/* backwards increment the len-bit code huff */
incr = 1U << (len - 1);
while (huff & incr)
incr >>= 1;
if (incr != 0) {
huff &= incr - 1;
huff += incr;
}
else
huff = 0;
/* go to next symbol, update count, len */
sym++;
if (--(count[len]) == 0) {
if (len == max) break;
len = lens[work[sym]];
}
/* create new sub-table if needed */
if (len > root && (huff & mask) != low) {
/* if first time, transition to sub-tables */
if (drop == 0)
drop = root;
/* increment past last table */
next += min; /* here min is 1 << curr */
/* determine length of next table */
curr = len - drop;
left = (int)(1 << curr);
while (curr + drop < max) {
left -= count[curr + drop];
if (left <= 0) break;
curr++;
left <<= 1;
}
/* check for enough space */
used += 1U << curr;
if ((type == LENS && used > ENOUGH_LENS) ||
(type == DISTS && used > ENOUGH_DISTS))
return 1;
/* point entry in root table to sub-table */
low = huff & mask;
(*table)[low].op = (unsigned char)curr;
(*table)[low].bits = (unsigned char)root;
(*table)[low].val = (unsigned short)(next - *table);
}
}
/* fill in remaining table entry if code is incomplete (guaranteed to have
at most one remaining entry, since if the code is incomplete, the
maximum code length that was allowed to get this far is one bit) */
if (huff != 0) {
here.op = (unsigned char)64; /* invalid code marker */
here.bits = (unsigned char)(len - drop);
here.val = (unsigned short)0;
next[huff] = here;
}
/* set return parameters */
*table += used;
*bits = root;
return 0;
}
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/inflate.h
|
/* inflate.h -- internal inflate state definition
* Copyright (C) 1995-2016 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* define NO_GZIP when compiling if you want to disable gzip header and
trailer decoding by inflate(). NO_GZIP would be used to avoid linking in
the crc code when it is not needed. For shared libraries, gzip decoding
should be left enabled. */
#ifndef NO_GZIP
# define GUNZIP
#endif
/* Possible inflate modes between inflate() calls */
typedef enum {
HEAD = 16180, /* i: waiting for magic header */
FLAGS, /* i: waiting for method and flags (gzip) */
TIME, /* i: waiting for modification time (gzip) */
OS, /* i: waiting for extra flags and operating system (gzip) */
EXLEN, /* i: waiting for extra length (gzip) */
EXTRA, /* i: waiting for extra bytes (gzip) */
NAME, /* i: waiting for end of file name (gzip) */
COMMENT, /* i: waiting for end of comment (gzip) */
HCRC, /* i: waiting for header crc (gzip) */
DICTID, /* i: waiting for dictionary check value */
DICT, /* waiting for inflateSetDictionary() call */
TYPE, /* i: waiting for type bits, including last-flag bit */
TYPEDO, /* i: same, but skip check to exit inflate on new block */
STORED, /* i: waiting for stored size (length and complement) */
COPY_, /* i/o: same as COPY below, but only first time in */
COPY, /* i/o: waiting for input or output to copy stored block */
TABLE, /* i: waiting for dynamic block table lengths */
LENLENS, /* i: waiting for code length code lengths */
CODELENS, /* i: waiting for length/lit and distance code lengths */
LEN_, /* i: same as LEN below, but only first time in */
LEN, /* i: waiting for length/lit/eob code */
LENEXT, /* i: waiting for length extra bits */
DIST, /* i: waiting for distance code */
DISTEXT, /* i: waiting for distance extra bits */
MATCH, /* o: waiting for output space to copy string */
LIT, /* o: waiting for output space to write literal */
CHECK, /* i: waiting for 32-bit check value */
LENGTH, /* i: waiting for 32-bit length (gzip) */
DONE, /* finished check, done -- remain here until reset */
BAD, /* got a data error -- remain here until reset */
MEM, /* got an inflate() memory error -- remain here until reset */
SYNC /* looking for synchronization bytes to restart inflate() */
} inflate_mode;
/*
State transitions between above modes -
(most modes can go to BAD or MEM on error -- not shown for clarity)
Process header:
HEAD -> (gzip) or (zlib) or (raw)
(gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->
HCRC -> TYPE
(zlib) -> DICTID or TYPE
DICTID -> DICT -> TYPE
(raw) -> TYPEDO
Read deflate blocks:
TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK
STORED -> COPY_ -> COPY -> TYPE
TABLE -> LENLENS -> CODELENS -> LEN_
LEN_ -> LEN
Read deflate codes in fixed or dynamic block:
LEN -> LENEXT or LIT or TYPE
LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
LIT -> LEN
Process trailer:
CHECK -> LENGTH -> DONE
*/
/* State maintained between inflate() calls -- approximately 7K bytes, not
including the allocated sliding window, which is up to 32K bytes. */
struct inflate_state {
z_streamp strm; /* pointer back to this zlib stream */
inflate_mode mode; /* current inflate mode */
int last; /* true if processing last block */
int wrap; /* bit 0 true for zlib, bit 1 true for gzip,
bit 2 true to validate check value */
int havedict; /* true if dictionary provided */
int flags; /* gzip header method and flags (0 if zlib) */
unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */
unsigned long check; /* protected copy of check value */
unsigned long total; /* protected copy of output count */
gz_headerp head; /* where to save gzip header information */
/* sliding window */
unsigned wbits; /* log base 2 of requested window size */
unsigned wsize; /* window size or zero if not using window */
unsigned whave; /* valid bytes in the window */
unsigned wnext; /* window write index */
unsigned char FAR *window; /* allocated sliding window, if needed */
/* bit accumulator */
unsigned long hold; /* input bit accumulator */
unsigned bits; /* number of bits in "in" */
/* for string and stored block copying */
unsigned length; /* literal or length of data to copy */
unsigned offset; /* distance back to copy string from */
/* for table and code decoding */
unsigned extra; /* extra bits needed */
/* fixed and dynamic code tables */
code const FAR *lencode; /* starting table for length/literal codes */
code const FAR *distcode; /* starting table for distance codes */
unsigned lenbits; /* index bits for lencode */
unsigned distbits; /* index bits for distcode */
/* dynamic table building */
unsigned ncode; /* number of code length code lengths */
unsigned nlen; /* number of length code lengths */
unsigned ndist; /* number of distance code lengths */
unsigned have; /* number of code lengths in lens[] */
code FAR *next; /* next available space in codes[] */
unsigned short lens[320]; /* temporary storage for code lengths */
unsigned short work[288]; /* work area for code table building */
code codes[ENOUGH]; /* space for code tables */
int sane; /* if false, allow invalid distance too far */
int back; /* bits back of last unprocessed length/lit */
unsigned was; /* initial length of match */
};
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/inffast.h
|
/* inffast.h -- header to use inffast.c
* Copyright (C) 1995-2003, 2010 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start));
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/gzguts.h
|
/* gzguts.h -- zlib internal header definitions for gz* operations
* Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#ifdef _LARGEFILE64_SOURCE
# ifndef _LARGEFILE_SOURCE
# define _LARGEFILE_SOURCE 1
# endif
# ifdef _FILE_OFFSET_BITS
# undef _FILE_OFFSET_BITS
# endif
#endif
#ifdef HAVE_HIDDEN
# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
# define ZLIB_INTERNAL
#endif
#include <stdio.h>
#include "zlib.h"
#ifdef STDC
# include <string.h>
# include <stdlib.h>
# include <limits.h>
#endif
#ifndef _POSIX_SOURCE
# define _POSIX_SOURCE
#endif
#include <fcntl.h>
#ifdef _WIN32
# include <stddef.h>
#endif
#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
# include <io.h>
#endif
#if defined(_WIN32) || defined(__CYGWIN__)
# define WIDECHAR
#endif
#ifdef WINAPI_FAMILY
# define open _open
# define read _read
# define write _write
# define close _close
#endif
#ifdef NO_DEFLATE /* for compatibility with old definition */
# define NO_GZCOMPRESS
#endif
#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
# ifndef HAVE_VSNPRINTF
# define HAVE_VSNPRINTF
# endif
#endif
#if defined(__CYGWIN__)
# ifndef HAVE_VSNPRINTF
# define HAVE_VSNPRINTF
# endif
#endif
#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
# ifndef HAVE_VSNPRINTF
# define HAVE_VSNPRINTF
# endif
#endif
#ifndef HAVE_VSNPRINTF
# ifdef MSDOS
/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
but for now we just assume it doesn't. */
# define NO_vsnprintf
# endif
# ifdef __TURBOC__
# define NO_vsnprintf
# endif
# ifdef WIN32
/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
# if !defined(vsnprintf) && !defined(NO_vsnprintf)
# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
# define vsnprintf _vsnprintf
# endif
# endif
# endif
# ifdef __SASC
# define NO_vsnprintf
# endif
# ifdef VMS
# define NO_vsnprintf
# endif
# ifdef __OS400__
# define NO_vsnprintf
# endif
# ifdef __MVS__
# define NO_vsnprintf
# endif
#endif
/* unlike snprintf (which is required in C99), _snprintf does not guarantee
null termination of the result -- however this is only used in gzlib.c where
the result is assured to fit in the space provided */
#if defined(_MSC_VER) && _MSC_VER < 1900
# define snprintf _snprintf
#endif
#ifndef local
# define local static
#endif
/* since "static" is used to mean two completely different things in C, we
define "local" for the non-static meaning of "static", for readability
(compile with -Dlocal if your debugger can't find static symbols) */
/* gz* functions always use library allocation functions */
#ifndef STDC
extern voidp malloc OF((uInt size));
extern void free OF((voidpf ptr));
#endif
/* get errno and strerror definition */
#if defined UNDER_CE
# include <windows.h>
# define zstrerror() gz_strwinerror((DWORD)GetLastError())
#else
# ifndef NO_STRERROR
# include <errno.h>
# define zstrerror() strerror(errno)
# else
# define zstrerror() "stdio error (consult errno)"
# endif
#endif
/* provide prototypes for these when building zlib without LFS */
#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
#endif
/* default memLevel */
#if MAX_MEM_LEVEL >= 8
# define DEF_MEM_LEVEL 8
#else
# define DEF_MEM_LEVEL MAX_MEM_LEVEL
#endif
/* default i/o buffer size -- double this for output when reading (this and
twice this must be able to fit in an unsigned type) */
#define GZBUFSIZE 8192
/* gzip modes, also provide a little integrity check on the passed structure */
#define GZ_NONE 0
#define GZ_READ 7247
#define GZ_WRITE 31153
#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
/* values for gz_state how */
#define LOOK 0 /* look for a gzip header */
#define COPY 1 /* copy input directly */
#define GZIP 2 /* decompress a gzip stream */
/* internal gzip file state data structure */
typedef struct {
/* exposed contents for gzgetc() macro */
struct gzFile_s x; /* "x" for exposed */
/* x.have: number of bytes available at x.next */
/* x.next: next output data to deliver or write */
/* x.pos: current position in uncompressed data */
/* used for both reading and writing */
int mode; /* see gzip modes above */
int fd; /* file descriptor */
char *path; /* path or fd for error messages */
unsigned size; /* buffer size, zero if not allocated yet */
unsigned want; /* requested buffer size, default is GZBUFSIZE */
unsigned char *in; /* input buffer (double-sized when writing) */
unsigned char *out; /* output buffer (double-sized when reading) */
int direct; /* 0 if processing gzip, 1 if transparent */
/* just for reading */
int how; /* 0: get header, 1: copy, 2: decompress */
z_off64_t start; /* where the gzip data started, for rewinding */
int eof; /* true if end of input file reached */
int past; /* true if read requested past end */
/* just for writing */
int level; /* compression level */
int strategy; /* compression strategy */
/* seek request */
z_off64_t skip; /* amount to skip (already rewound if backwards) */
int seek; /* true if seek request pending */
/* error information */
int err; /* error code */
char *msg; /* error message */
/* zlib inflate or deflate stream */
z_stream strm; /* stream structure in-place (not a pointer) */
} gz_state;
typedef gz_state FAR *gz_statep;
/* shared functions */
void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
#if defined UNDER_CE
char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
#endif
/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
value -- needed when comparing unsigned to z_off64_t, which is signed
(possible z_off64_t types off_t, off64_t, and long are all signed) */
#ifdef INT_MAX
# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
#else
unsigned ZLIB_INTERNAL gz_intmax OF((void));
# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/deflate.c
|
/* deflate.c -- compress data using the deflation algorithm
* Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/*
* ALGORITHM
*
* The "deflation" process depends on being able to identify portions
* of the input text which are identical to earlier input (within a
* sliding window trailing behind the input currently being processed).
*
* The most straightforward technique turns out to be the fastest for
* most input files: try all possible matches and select the longest.
* The key feature of this algorithm is that insertions into the string
* dictionary are very simple and thus fast, and deletions are avoided
* completely. Insertions are performed at each input character, whereas
* string matches are performed only when the previous match ends. So it
* is preferable to spend more time in matches to allow very fast string
* insertions and avoid deletions. The matching algorithm for small
* strings is inspired from that of Rabin & Karp. A brute force approach
* is used to find longer strings when a small match has been found.
* A similar algorithm is used in comic (by Jan-Mark Wams) and freeze
* (by Leonid Broukhis).
* A previous version of this file used a more sophisticated algorithm
* (by Fiala and Greene) which is guaranteed to run in linear amortized
* time, but has a larger average cost, uses more memory and is patented.
* However the F&G algorithm may be faster for some highly redundant
* files if the parameter max_chain_length (described below) is too large.
*
* ACKNOWLEDGEMENTS
*
* The idea of lazy evaluation of matches is due to Jan-Mark Wams, and
* I found it in 'freeze' written by Leonid Broukhis.
* Thanks to many people for bug reports and testing.
*
* REFERENCES
*
* Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
* Available in http://tools.ietf.org/html/rfc1951
*
* A description of the Rabin and Karp algorithm is given in the book
* "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
*
* Fiala,E.R., and Greene,D.H.
* Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595
*
*/
/* @(#) $Id$ */
#include "deflate.h"
const char deflate_copyright[] =
" deflate 1.2.11 Copyright 1995-2017 Jean-loup Gailly and Mark Adler ";
/*
If you use the zlib library in a product, an acknowledgment is welcome
in the documentation of your product. If for some reason you cannot
include such an acknowledgment, I would appreciate that you keep this
copyright string in the executable of your product.
*/
/* ===========================================================================
* Function prototypes.
*/
typedef enum {
need_more, /* block not completed, need more input or more output */
block_done, /* block flush performed */
finish_started, /* finish started, need only more output at next deflate */
finish_done /* finish done, accept no more input or output */
} block_state;
typedef block_state (*compress_func) OF((deflate_state *s, int flush));
/* Compression function. Returns the block state after the call. */
local int deflateStateCheck OF((z_streamp strm));
local void slide_hash OF((deflate_state *s));
local void fill_window OF((deflate_state *s));
local block_state deflate_stored OF((deflate_state *s, int flush));
local block_state deflate_fast OF((deflate_state *s, int flush));
#ifndef FASTEST
local block_state deflate_slow OF((deflate_state *s, int flush));
#endif
local block_state deflate_rle OF((deflate_state *s, int flush));
local block_state deflate_huff OF((deflate_state *s, int flush));
local void lm_init OF((deflate_state *s));
local void putShortMSB OF((deflate_state *s, uInt b));
local void flush_pending OF((z_streamp strm));
local unsigned read_buf OF((z_streamp strm, Bytef *buf, unsigned size));
#ifdef ASMV
# pragma message("Assembler code may have bugs -- use at your own risk")
void match_init OF((void)); /* asm code initialization */
uInt longest_match OF((deflate_state *s, IPos cur_match));
#else
local uInt longest_match OF((deflate_state *s, IPos cur_match));
#endif
#ifdef ZLIB_DEBUG
local void check_match OF((deflate_state *s, IPos start, IPos match,
int length));
#endif
/* ===========================================================================
* Local data
*/
#define NIL 0
/* Tail of hash chains */
#ifndef TOO_FAR
# define TOO_FAR 4096
#endif
/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */
/* Values for max_lazy_match, good_match and max_chain_length, depending on
* the desired pack level (0..9). The values given below have been tuned to
* exclude worst case performance for pathological files. Better values may be
* found for specific files.
*/
typedef struct config_s {
ush good_length; /* reduce lazy search above this match length */
ush max_lazy; /* do not perform lazy search above this match length */
ush nice_length; /* quit search above this match length */
ush max_chain;
compress_func func;
} config;
#ifdef FASTEST
local const config configuration_table[2] = {
/* good lazy nice chain */
/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */
/* 1 */ {4, 4, 8, 4, deflate_fast}}; /* max speed, no lazy matches */
#else
local const config configuration_table[10] = {
/* good lazy nice chain */
/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */
/* 1 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */
/* 2 */ {4, 5, 16, 8, deflate_fast},
/* 3 */ {4, 6, 32, 32, deflate_fast},
/* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */
/* 5 */ {8, 16, 32, 32, deflate_slow},
/* 6 */ {8, 16, 128, 128, deflate_slow},
/* 7 */ {8, 32, 128, 256, deflate_slow},
/* 8 */ {32, 128, 258, 1024, deflate_slow},
/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */
#endif
/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4
* For deflate_fast() (levels <= 3) good is ignored and lazy has a different
* meaning.
*/
/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */
#define RANK(f) (((f) * 2) - ((f) > 4 ? 9 : 0))
/* ===========================================================================
* Update a hash value with the given input byte
* IN assertion: all calls to UPDATE_HASH are made with consecutive input
* characters, so that a running hash key can be computed from the previous
* key instead of complete recalculation each time.
*/
#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)
/* ===========================================================================
* Insert string str in the dictionary and set match_head to the previous head
* of the hash chain (the most recent string with same hash key). Return
* the previous length of the hash chain.
* If this file is compiled with -DFASTEST, the compression level is forced
* to 1, and no hash chains are maintained.
* IN assertion: all calls to INSERT_STRING are made with consecutive input
* characters and the first MIN_MATCH bytes of str are valid (except for
* the last MIN_MATCH-1 bytes of the input file).
*/
#ifdef FASTEST
#define INSERT_STRING(s, str, match_head) \
(UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
match_head = s->head[s->ins_h], \
s->head[s->ins_h] = (Pos)(str))
#else
#define INSERT_STRING(s, str, match_head) \
(UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \
s->head[s->ins_h] = (Pos)(str))
#endif
/* ===========================================================================
* Initialize the hash table (avoiding 64K overflow for 16 bit systems).
* prev[] will be initialized on the fly.
*/
#define CLEAR_HASH(s) \
s->head[s->hash_size-1] = NIL; \
zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));
/* ===========================================================================
* Slide the hash table when sliding the window down (could be avoided with 32
* bit values at the expense of memory usage). We slide even when level == 0 to
* keep the hash table consistent if we switch back to level > 0 later.
*/
local void slide_hash(s)
deflate_state *s;
{
unsigned n, m;
Posf *p;
uInt wsize = s->w_size;
n = s->hash_size;
p = &s->head[n];
do {
m = *--p;
*p = (Pos)(m >= wsize ? m - wsize : NIL);
} while (--n);
n = wsize;
#ifndef FASTEST
p = &s->prev[n];
do {
m = *--p;
*p = (Pos)(m >= wsize ? m - wsize : NIL);
/* If n is not on any hash chain, prev[n] is garbage but
* its value will never be used.
*/
} while (--n);
#endif
}
/* ========================================================================= */
int ZEXPORT deflateInit_(strm, level, version, stream_size)
z_streamp strm;
int level;
const char *version;
int stream_size;
{
return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
Z_DEFAULT_STRATEGY, version, stream_size);
/* To do: ignore strm->next_in if we use it as window */
}
/* ========================================================================= */
int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
version, stream_size)
z_streamp strm;
int level;
int method;
int windowBits;
int memLevel;
int strategy;
const char *version;
int stream_size;
{
deflate_state *s;
int wrap = 1;
static const char my_version[] = ZLIB_VERSION;
ushf *overlay;
/* We overlay pending_buf and d_buf+l_buf. This works since the average
* output size for (length,distance) codes is <= 24 bits.
*/
if (version == Z_NULL || version[0] != my_version[0] ||
stream_size != sizeof(z_stream)) {
return Z_VERSION_ERROR;
}
if (strm == Z_NULL) return Z_STREAM_ERROR;
strm->msg = Z_NULL;
if (strm->zalloc == (alloc_func)0) {
#ifdef Z_SOLO
return Z_STREAM_ERROR;
#else
strm->zalloc = zcalloc;
strm->opaque = (voidpf)0;
#endif
}
if (strm->zfree == (free_func)0)
#ifdef Z_SOLO
return Z_STREAM_ERROR;
#else
strm->zfree = zcfree;
#endif
#ifdef FASTEST
if (level != 0) level = 1;
#else
if (level == Z_DEFAULT_COMPRESSION) level = 6;
#endif
if (windowBits < 0) { /* suppress zlib wrapper */
wrap = 0;
windowBits = -windowBits;
}
#ifdef GZIP
else if (windowBits > 15) {
wrap = 2; /* write gzip wrapper instead */
windowBits -= 16;
}
#endif
if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||
windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
strategy < 0 || strategy > Z_FIXED || (windowBits == 8 && wrap != 1)) {
return Z_STREAM_ERROR;
}
if (windowBits == 8) windowBits = 9; /* until 256-byte window bug fixed */
s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state));
if (s == Z_NULL) return Z_MEM_ERROR;
strm->state = (struct internal_state FAR *)s;
s->strm = strm;
s->status = INIT_STATE; /* to pass state test in deflateReset() */
s->wrap = wrap;
s->gzhead = Z_NULL;
s->w_bits = (uInt)windowBits;
s->w_size = 1 << s->w_bits;
s->w_mask = s->w_size - 1;
s->hash_bits = (uInt)memLevel + 7;
s->hash_size = 1 << s->hash_bits;
s->hash_mask = s->hash_size - 1;
s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);
s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos));
memset(s->prev, 0, s->w_size * sizeof(Pos));
s->head = (Posf *) ZALLOC(strm, s->hash_size, sizeof(Pos));
s->high_water = 0; /* nothing written to s->window yet */
s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
s->pending_buf = (uchf *) overlay;
s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L);
if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
s->pending_buf == Z_NULL) {
s->status = FINISH_STATE;
strm->msg = ERR_MSG(Z_MEM_ERROR);
deflateEnd (strm);
return Z_MEM_ERROR;
}
s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
s->level = level;
s->strategy = strategy;
s->method = (Byte)method;
return deflateReset(strm);
}
/* =========================================================================
* Check for a valid deflate stream state. Return 0 if ok, 1 if not.
*/
local int deflateStateCheck (strm)
z_streamp strm;
{
deflate_state *s;
if (strm == Z_NULL ||
strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0)
return 1;
s = strm->state;
if (s == Z_NULL || s->strm != strm || (s->status != INIT_STATE &&
#ifdef GZIP
s->status != GZIP_STATE &&
#endif
s->status != EXTRA_STATE &&
s->status != NAME_STATE &&
s->status != COMMENT_STATE &&
s->status != HCRC_STATE &&
s->status != BUSY_STATE &&
s->status != FINISH_STATE))
return 1;
return 0;
}
/* ========================================================================= */
int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
z_streamp strm;
const Bytef *dictionary;
uInt dictLength;
{
deflate_state *s;
uInt str, n;
int wrap;
unsigned avail;
z_const unsigned char *next;
if (deflateStateCheck(strm) || dictionary == Z_NULL)
return Z_STREAM_ERROR;
s = strm->state;
wrap = s->wrap;
if (wrap == 2 || (wrap == 1 && s->status != INIT_STATE) || s->lookahead)
return Z_STREAM_ERROR;
/* when using zlib wrappers, compute Adler-32 for provided dictionary */
if (wrap == 1)
strm->adler = adler32(strm->adler, dictionary, dictLength);
s->wrap = 0; /* avoid computing Adler-32 in read_buf */
/* if dictionary would fill window, just replace the history */
if (dictLength >= s->w_size) {
if (wrap == 0) { /* already empty otherwise */
CLEAR_HASH(s);
s->strstart = 0;
s->block_start = 0L;
s->insert = 0;
}
dictionary += dictLength - s->w_size; /* use the tail */
dictLength = s->w_size;
}
/* insert dictionary into window and hash */
avail = strm->avail_in;
next = strm->next_in;
strm->avail_in = dictLength;
strm->next_in = (z_const Bytef *)dictionary;
fill_window(s);
while (s->lookahead >= MIN_MATCH) {
str = s->strstart;
n = s->lookahead - (MIN_MATCH-1);
do {
UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
#ifndef FASTEST
s->prev[str & s->w_mask] = s->head[s->ins_h];
#endif
s->head[s->ins_h] = (Pos)str;
str++;
} while (--n);
s->strstart = str;
s->lookahead = MIN_MATCH-1;
fill_window(s);
}
s->strstart += s->lookahead;
s->block_start = (long)s->strstart;
s->insert = s->lookahead;
s->lookahead = 0;
s->match_length = s->prev_length = MIN_MATCH-1;
s->match_available = 0;
strm->next_in = next;
strm->avail_in = avail;
s->wrap = wrap;
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflateGetDictionary (strm, dictionary, dictLength)
z_streamp strm;
Bytef *dictionary;
uInt *dictLength;
{
deflate_state *s;
uInt len;
if (deflateStateCheck(strm))
return Z_STREAM_ERROR;
s = strm->state;
len = s->strstart + s->lookahead;
if (len > s->w_size)
len = s->w_size;
if (dictionary != Z_NULL && len)
zmemcpy(dictionary, s->window + s->strstart + s->lookahead - len, len);
if (dictLength != Z_NULL)
*dictLength = len;
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflateResetKeep (strm)
z_streamp strm;
{
deflate_state *s;
if (deflateStateCheck(strm)) {
return Z_STREAM_ERROR;
}
strm->total_in = strm->total_out = 0;
strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
strm->data_type = Z_UNKNOWN;
s = (deflate_state *)strm->state;
s->pending = 0;
s->pending_out = s->pending_buf;
if (s->wrap < 0) {
s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */
}
s->status =
#ifdef GZIP
s->wrap == 2 ? GZIP_STATE :
#endif
s->wrap ? INIT_STATE : BUSY_STATE;
strm->adler =
#ifdef GZIP
s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
#endif
adler32(0L, Z_NULL, 0);
s->last_flush = Z_NO_FLUSH;
_tr_init(s);
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflateReset (strm)
z_streamp strm;
{
int ret;
ret = deflateResetKeep(strm);
if (ret == Z_OK)
lm_init(strm->state);
return ret;
}
/* ========================================================================= */
int ZEXPORT deflateSetHeader (strm, head)
z_streamp strm;
gz_headerp head;
{
if (deflateStateCheck(strm) || strm->state->wrap != 2)
return Z_STREAM_ERROR;
strm->state->gzhead = head;
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflatePending (strm, pending, bits)
unsigned *pending;
int *bits;
z_streamp strm;
{
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
if (pending != Z_NULL)
*pending = strm->state->pending;
if (bits != Z_NULL)
*bits = strm->state->bi_valid;
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflatePrime (strm, bits, value)
z_streamp strm;
int bits;
int value;
{
deflate_state *s;
int put;
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
s = strm->state;
if ((Bytef *)(s->d_buf) < s->pending_out + ((Buf_size + 7) >> 3))
return Z_BUF_ERROR;
do {
put = Buf_size - s->bi_valid;
if (put > bits)
put = bits;
s->bi_buf |= (ush)((value & ((1 << put) - 1)) << s->bi_valid);
s->bi_valid += put;
_tr_flush_bits(s);
value >>= put;
bits -= put;
} while (bits);
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflateParams(strm, level, strategy)
z_streamp strm;
int level;
int strategy;
{
deflate_state *s;
compress_func func;
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
s = strm->state;
#ifdef FASTEST
if (level != 0) level = 1;
#else
if (level == Z_DEFAULT_COMPRESSION) level = 6;
#endif
if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) {
return Z_STREAM_ERROR;
}
func = configuration_table[s->level].func;
if ((strategy != s->strategy || func != configuration_table[level].func) &&
s->high_water) {
/* Flush the last buffer: */
int err = deflate(strm, Z_BLOCK);
if (err == Z_STREAM_ERROR)
return err;
if (strm->avail_out == 0)
return Z_BUF_ERROR;
}
if (s->level != level) {
if (s->level == 0 && s->matches != 0) {
if (s->matches == 1)
slide_hash(s);
else
CLEAR_HASH(s);
s->matches = 0;
}
s->level = level;
s->max_lazy_match = configuration_table[level].max_lazy;
s->good_match = configuration_table[level].good_length;
s->nice_match = configuration_table[level].nice_length;
s->max_chain_length = configuration_table[level].max_chain;
}
s->strategy = strategy;
return Z_OK;
}
/* ========================================================================= */
int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain)
z_streamp strm;
int good_length;
int max_lazy;
int nice_length;
int max_chain;
{
deflate_state *s;
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
s = strm->state;
s->good_match = (uInt)good_length;
s->max_lazy_match = (uInt)max_lazy;
s->nice_match = nice_length;
s->max_chain_length = (uInt)max_chain;
return Z_OK;
}
/* =========================================================================
* For the default windowBits of 15 and memLevel of 8, this function returns
* a close to exact, as well as small, upper bound on the compressed size.
* They are coded as constants here for a reason--if the #define's are
* changed, then this function needs to be changed as well. The return
* value for 15 and 8 only works for those exact settings.
*
* For any setting other than those defaults for windowBits and memLevel,
* the value returned is a conservative worst case for the maximum expansion
* resulting from using fixed blocks instead of stored blocks, which deflate
* can emit on compressed data for some combinations of the parameters.
*
* This function could be more sophisticated to provide closer upper bounds for
* every combination of windowBits and memLevel. But even the conservative
* upper bound of about 14% expansion does not seem onerous for output buffer
* allocation.
*/
uLong ZEXPORT deflateBound(strm, sourceLen)
z_streamp strm;
uLong sourceLen;
{
deflate_state *s;
uLong complen, wraplen;
/* conservative upper bound for compressed data */
complen = sourceLen +
((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5;
/* if can't get parameters, return conservative bound plus zlib wrapper */
if (deflateStateCheck(strm))
return complen + 6;
/* compute wrapper length */
s = strm->state;
switch (s->wrap) {
case 0: /* raw deflate */
wraplen = 0;
break;
case 1: /* zlib wrapper */
wraplen = 6 + (s->strstart ? 4 : 0);
break;
#ifdef GZIP
case 2: /* gzip wrapper */
wraplen = 18;
if (s->gzhead != Z_NULL) { /* user-supplied gzip header */
Bytef *str;
if (s->gzhead->extra != Z_NULL)
wraplen += 2 + s->gzhead->extra_len;
str = s->gzhead->name;
if (str != Z_NULL)
do {
wraplen++;
} while (*str++);
str = s->gzhead->comment;
if (str != Z_NULL)
do {
wraplen++;
} while (*str++);
if (s->gzhead->hcrc)
wraplen += 2;
}
break;
#endif
default: /* for compiler happiness */
wraplen = 6;
}
/* if not default parameters, return conservative bound */
if (s->w_bits != 15 || s->hash_bits != 8 + 7)
return complen + wraplen;
/* default settings: return tight bound for that case */
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
(sourceLen >> 25) + 13 - 6 + wraplen;
}
/* =========================================================================
* Put a short in the pending buffer. The 16-bit value is put in MSB order.
* IN assertion: the stream state is correct and there is enough room in
* pending_buf.
*/
local void putShortMSB (s, b)
deflate_state *s;
uInt b;
{
put_byte(s, (Byte)(b >> 8));
put_byte(s, (Byte)(b & 0xff));
}
/* =========================================================================
* Flush as much pending output as possible. All deflate() output, except for
* some deflate_stored() output, goes through this function so some
* applications may wish to modify it to avoid allocating a large
* strm->next_out buffer and copying into it. (See also read_buf()).
*/
local void flush_pending(strm)
z_streamp strm;
{
unsigned len;
deflate_state *s = strm->state;
_tr_flush_bits(s);
len = s->pending;
if (len > strm->avail_out) len = strm->avail_out;
if (len == 0) return;
zmemcpy(strm->next_out, s->pending_out, len);
strm->next_out += len;
s->pending_out += len;
strm->total_out += len;
strm->avail_out -= len;
s->pending -= len;
if (s->pending == 0) {
s->pending_out = s->pending_buf;
}
}
/* ===========================================================================
* Update the header CRC with the bytes s->pending_buf[beg..s->pending - 1].
*/
#define HCRC_UPDATE(beg) \
do { \
if (s->gzhead->hcrc && s->pending > (beg)) \
strm->adler = crc32(strm->adler, s->pending_buf + (beg), \
s->pending - (beg)); \
} while (0)
/* ========================================================================= */
int ZEXPORT deflate (strm, flush)
z_streamp strm;
int flush;
{
int old_flush; /* value of flush param for previous deflate call */
deflate_state *s;
if (deflateStateCheck(strm) || flush > Z_BLOCK || flush < 0) {
return Z_STREAM_ERROR;
}
s = strm->state;
if (strm->next_out == Z_NULL ||
(strm->avail_in != 0 && strm->next_in == Z_NULL) ||
(s->status == FINISH_STATE && flush != Z_FINISH)) {
ERR_RETURN(strm, Z_STREAM_ERROR);
}
if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);
old_flush = s->last_flush;
s->last_flush = flush;
/* Flush as much pending output as possible */
if (s->pending != 0) {
flush_pending(strm);
if (strm->avail_out == 0) {
/* Since avail_out is 0, deflate will be called again with
* more output space, but possibly with both pending and
* avail_in equal to zero. There won't be anything to do,
* but this is not an error situation so make sure we
* return OK instead of BUF_ERROR at next call of deflate:
*/
s->last_flush = -1;
return Z_OK;
}
/* Make sure there is something to do and avoid duplicate consecutive
* flushes. For repeated and useless calls with Z_FINISH, we keep
* returning Z_STREAM_END instead of Z_BUF_ERROR.
*/
} else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) &&
flush != Z_FINISH) {
ERR_RETURN(strm, Z_BUF_ERROR);
}
/* User must not provide more input after the first FINISH: */
if (s->status == FINISH_STATE && strm->avail_in != 0) {
ERR_RETURN(strm, Z_BUF_ERROR);
}
/* Write the header */
if (s->status == INIT_STATE) {
/* zlib header */
uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
uInt level_flags;
if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
level_flags = 0;
else if (s->level < 6)
level_flags = 1;
else if (s->level == 6)
level_flags = 2;
else
level_flags = 3;
header |= (level_flags << 6);
if (s->strstart != 0) header |= PRESET_DICT;
header += 31 - (header % 31);
putShortMSB(s, header);
/* Save the adler32 of the preset dictionary: */
if (s->strstart != 0) {
putShortMSB(s, (uInt)(strm->adler >> 16));
putShortMSB(s, (uInt)(strm->adler & 0xffff));
}
strm->adler = adler32(0L, Z_NULL, 0);
s->status = BUSY_STATE;
/* Compression must start with an empty pending buffer */
flush_pending(strm);
if (s->pending != 0) {
s->last_flush = -1;
return Z_OK;
}
}
#ifdef GZIP
if (s->status == GZIP_STATE) {
/* gzip header */
strm->adler = crc32(0L, Z_NULL, 0);
put_byte(s, 31);
put_byte(s, 139);
put_byte(s, 8);
if (s->gzhead == Z_NULL) {
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, 0);
put_byte(s, s->level == 9 ? 2 :
(s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
4 : 0));
put_byte(s, OS_CODE);
s->status = BUSY_STATE;
/* Compression must start with an empty pending buffer */
flush_pending(strm);
if (s->pending != 0) {
s->last_flush = -1;
return Z_OK;
}
}
else {
put_byte(s, (s->gzhead->text ? 1 : 0) +
(s->gzhead->hcrc ? 2 : 0) +
(s->gzhead->extra == Z_NULL ? 0 : 4) +
(s->gzhead->name == Z_NULL ? 0 : 8) +
(s->gzhead->comment == Z_NULL ? 0 : 16)
);
put_byte(s, (Byte)(s->gzhead->time & 0xff));
put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff));
put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff));
put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff));
put_byte(s, s->level == 9 ? 2 :
(s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
4 : 0));
put_byte(s, s->gzhead->os & 0xff);
if (s->gzhead->extra != Z_NULL) {
put_byte(s, s->gzhead->extra_len & 0xff);
put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);
}
if (s->gzhead->hcrc)
strm->adler = crc32(strm->adler, s->pending_buf,
s->pending);
s->gzindex = 0;
s->status = EXTRA_STATE;
}
}
if (s->status == EXTRA_STATE) {
if (s->gzhead->extra != Z_NULL) {
ulg beg = s->pending; /* start of bytes to update crc */
uInt left = (s->gzhead->extra_len & 0xffff) - s->gzindex;
while (s->pending + left > s->pending_buf_size) {
uInt copy = s->pending_buf_size - s->pending;
zmemcpy(s->pending_buf + s->pending,
s->gzhead->extra + s->gzindex, copy);
s->pending = s->pending_buf_size;
HCRC_UPDATE(beg);
s->gzindex += copy;
flush_pending(strm);
if (s->pending != 0) {
s->last_flush = -1;
return Z_OK;
}
beg = 0;
left -= copy;
}
zmemcpy(s->pending_buf + s->pending,
s->gzhead->extra + s->gzindex, left);
s->pending += left;
HCRC_UPDATE(beg);
s->gzindex = 0;
}
s->status = NAME_STATE;
}
if (s->status == NAME_STATE) {
if (s->gzhead->name != Z_NULL) {
ulg beg = s->pending; /* start of bytes to update crc */
int val;
do {
if (s->pending == s->pending_buf_size) {
HCRC_UPDATE(beg);
flush_pending(strm);
if (s->pending != 0) {
s->last_flush = -1;
return Z_OK;
}
beg = 0;
}
val = s->gzhead->name[s->gzindex++];
put_byte(s, val);
} while (val != 0);
HCRC_UPDATE(beg);
s->gzindex = 0;
}
s->status = COMMENT_STATE;
}
if (s->status == COMMENT_STATE) {
if (s->gzhead->comment != Z_NULL) {
ulg beg = s->pending; /* start of bytes to update crc */
int val;
do {
if (s->pending == s->pending_buf_size) {
HCRC_UPDATE(beg);
flush_pending(strm);
if (s->pending != 0) {
s->last_flush = -1;
return Z_OK;
}
beg = 0;
}
val = s->gzhead->comment[s->gzindex++];
put_byte(s, val);
} while (val != 0);
HCRC_UPDATE(beg);
}
s->status = HCRC_STATE;
}
if (s->status == HCRC_STATE) {
if (s->gzhead->hcrc) {
if (s->pending + 2 > s->pending_buf_size) {
flush_pending(strm);
if (s->pending != 0) {
s->last_flush = -1;
return Z_OK;
}
}
put_byte(s, (Byte)(strm->adler & 0xff));
put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
strm->adler = crc32(0L, Z_NULL, 0);
}
s->status = BUSY_STATE;
/* Compression must start with an empty pending buffer */
flush_pending(strm);
if (s->pending != 0) {
s->last_flush = -1;
return Z_OK;
}
}
#endif
/* Start a new block or continue the current one.
*/
if (strm->avail_in != 0 || s->lookahead != 0 ||
(flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
block_state bstate;
bstate = s->level == 0 ? deflate_stored(s, flush) :
s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :
s->strategy == Z_RLE ? deflate_rle(s, flush) :
(*(configuration_table[s->level].func))(s, flush);
if (bstate == finish_started || bstate == finish_done) {
s->status = FINISH_STATE;
}
if (bstate == need_more || bstate == finish_started) {
if (strm->avail_out == 0) {
s->last_flush = -1; /* avoid BUF_ERROR next call, see above */
}
return Z_OK;
/* If flush != Z_NO_FLUSH && avail_out == 0, the next call
* of deflate should use the same flush parameter to make sure
* that the flush is complete. So we don't have to output an
* empty block here, this will be done at next call. This also
* ensures that for a very small output buffer, we emit at most
* one empty block.
*/
}
if (bstate == block_done) {
if (flush == Z_PARTIAL_FLUSH) {
_tr_align(s);
} else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
_tr_stored_block(s, (char*)0, 0L, 0);
/* For a full flush, this empty block will be recognized
* as a special marker by inflate_sync().
*/
if (flush == Z_FULL_FLUSH) {
CLEAR_HASH(s); /* forget history */
if (s->lookahead == 0) {
s->strstart = 0;
s->block_start = 0L;
s->insert = 0;
}
}
}
flush_pending(strm);
if (strm->avail_out == 0) {
s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */
return Z_OK;
}
}
}
if (flush != Z_FINISH) return Z_OK;
if (s->wrap <= 0) return Z_STREAM_END;
/* Write the trailer */
#ifdef GZIP
if (s->wrap == 2) {
put_byte(s, (Byte)(strm->adler & 0xff));
put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
put_byte(s, (Byte)((strm->adler >> 16) & 0xff));
put_byte(s, (Byte)((strm->adler >> 24) & 0xff));
put_byte(s, (Byte)(strm->total_in & 0xff));
put_byte(s, (Byte)((strm->total_in >> 8) & 0xff));
put_byte(s, (Byte)((strm->total_in >> 16) & 0xff));
put_byte(s, (Byte)((strm->total_in >> 24) & 0xff));
}
else
#endif
{
putShortMSB(s, (uInt)(strm->adler >> 16));
putShortMSB(s, (uInt)(strm->adler & 0xffff));
}
flush_pending(strm);
/* If avail_out is zero, the application will call deflate again
* to flush the rest.
*/
if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */
return s->pending != 0 ? Z_OK : Z_STREAM_END;
}
/* ========================================================================= */
int ZEXPORT deflateEnd (strm)
z_streamp strm;
{
int status;
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
status = strm->state->status;
/* Deallocate in reverse order of allocations: */
TRY_FREE(strm, strm->state->pending_buf);
TRY_FREE(strm, strm->state->head);
TRY_FREE(strm, strm->state->prev);
TRY_FREE(strm, strm->state->window);
ZFREE(strm, strm->state);
strm->state = Z_NULL;
return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
}
/* =========================================================================
* Copy the source state to the destination state.
* To simplify the source, this is not supported for 16-bit MSDOS (which
* doesn't have enough memory anyway to duplicate compression states).
*/
int ZEXPORT deflateCopy (dest, source)
z_streamp dest;
z_streamp source;
{
#ifdef MAXSEG_64K
return Z_STREAM_ERROR;
#else
deflate_state *ds;
deflate_state *ss;
ushf *overlay;
if (deflateStateCheck(source) || dest == Z_NULL) {
return Z_STREAM_ERROR;
}
ss = source->state;
zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));
if (ds == Z_NULL) return Z_MEM_ERROR;
dest->state = (struct internal_state FAR *) ds;
zmemcpy((voidpf)ds, (voidpf)ss, sizeof(deflate_state));
ds->strm = dest;
ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos));
ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos));
overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2);
ds->pending_buf = (uchf *) overlay;
if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
ds->pending_buf == Z_NULL) {
deflateEnd (dest);
return Z_MEM_ERROR;
}
/* following zmemcpy do not work for 16-bit MSDOS */
zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos));
zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos));
zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush);
ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize;
ds->l_desc.dyn_tree = ds->dyn_ltree;
ds->d_desc.dyn_tree = ds->dyn_dtree;
ds->bl_desc.dyn_tree = ds->bl_tree;
return Z_OK;
#endif /* MAXSEG_64K */
}
/* ===========================================================================
* Read a new buffer from the current input stream, update the adler32
* and total number of bytes read. All deflate() input goes through
* this function so some applications may wish to modify it to avoid
* allocating a large strm->next_in buffer and copying from it.
* (See also flush_pending()).
*/
local unsigned read_buf(strm, buf, size)
z_streamp strm;
Bytef *buf;
unsigned size;
{
unsigned len = strm->avail_in;
if (len > size) len = size;
if (len == 0) return 0;
strm->avail_in -= len;
zmemcpy(buf, strm->next_in, len);
if (strm->state->wrap == 1) {
strm->adler = adler32(strm->adler, buf, len);
}
#ifdef GZIP
else if (strm->state->wrap == 2) {
strm->adler = crc32(strm->adler, buf, len);
}
#endif
strm->next_in += len;
strm->total_in += len;
return len;
}
/* ===========================================================================
* Initialize the "longest match" routines for a new zlib stream
*/
local void lm_init (s)
deflate_state *s;
{
s->window_size = (ulg)2L*s->w_size;
CLEAR_HASH(s);
/* Set the default configuration parameters:
*/
s->max_lazy_match = configuration_table[s->level].max_lazy;
s->good_match = configuration_table[s->level].good_length;
s->nice_match = configuration_table[s->level].nice_length;
s->max_chain_length = configuration_table[s->level].max_chain;
s->strstart = 0;
s->block_start = 0L;
s->lookahead = 0;
s->insert = 0;
s->match_length = s->prev_length = MIN_MATCH-1;
s->match_available = 0;
s->ins_h = 0;
#ifndef FASTEST
#ifdef ASMV
match_init(); /* initialize the asm code */
#endif
#endif
}
#ifndef FASTEST
/* ===========================================================================
* Set match_start to the longest match starting at the given string and
* return its length. Matches shorter or equal to prev_length are discarded,
* in which case the result is equal to prev_length and match_start is
* garbage.
* IN assertions: cur_match is the head of the hash chain for the current
* string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
* OUT assertion: the match length is not greater than s->lookahead.
*/
#ifndef ASMV
/* For 80x86 and 680x0, an optimized version will be provided in match.asm or
* match.S. The code will be functionally equivalent.
*/
local uInt longest_match(s, cur_match)
deflate_state *s;
IPos cur_match; /* current match */
{
unsigned chain_length = s->max_chain_length;/* max hash chain length */
register Bytef *scan = s->window + s->strstart; /* current string */
register Bytef *match; /* matched string */
register int len; /* length of current match */
int best_len = (int)s->prev_length; /* best match length so far */
int nice_match = s->nice_match; /* stop if match long enough */
IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
s->strstart - (IPos)MAX_DIST(s) : NIL;
/* Stop when cur_match becomes <= limit. To simplify the code,
* we prevent matches with the string of window index 0.
*/
Posf *prev = s->prev;
uInt wmask = s->w_mask;
#ifdef UNALIGNED_OK
/* Compare two bytes at a time. Note: this is not always beneficial.
* Try with and without -DUNALIGNED_OK to check.
*/
register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
register ush scan_start = *(ushf*)scan;
register ush scan_end = *(ushf*)(scan+best_len-1);
#else
register Bytef *strend = s->window + s->strstart + MAX_MATCH;
register Byte scan_end1 = scan[best_len-1];
register Byte scan_end = scan[best_len];
#endif
/* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
* It is easy to get rid of this optimization if necessary.
*/
Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
/* Do not waste too much time if we already have a good match: */
if (s->prev_length >= s->good_match) {
chain_length >>= 2;
}
/* Do not look for matches beyond the end of the input. This is necessary
* to make deflate deterministic.
*/
if ((uInt)nice_match > s->lookahead) nice_match = (int)s->lookahead;
Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
do {
Assert(cur_match < s->strstart, "no future");
match = s->window + cur_match;
/* Skip to next match if the match length cannot increase
* or if the match length is less than 2. Note that the checks below
* for insufficient lookahead only occur occasionally for performance
* reasons. Therefore uninitialized memory will be accessed, and
* conditional jumps will be made that depend on those values.
* However the length of the match is limited to the lookahead, so
* the output of deflate is not affected by the uninitialized values.
*/
#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)
/* This code assumes sizeof(unsigned short) == 2. Do not use
* UNALIGNED_OK if your compiler uses a different size.
*/
if (*(ushf*)(match+best_len-1) != scan_end ||
*(ushf*)match != scan_start) continue;
/* It is not necessary to compare scan[2] and match[2] since they are
* always equal when the other bytes match, given that the hash keys
* are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
* strstart+3, +5, ... up to strstart+257. We check for insufficient
* lookahead only every 4th comparison; the 128th check will be made
* at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is
* necessary to put more guard bytes at the end of the window, or
* to check more often for insufficient lookahead.
*/
Assert(scan[2] == match[2], "scan[2]?");
scan++, match++;
do {
} while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
scan < strend);
/* The funny "do {}" generates better code on most compilers */
/* Here, scan <= window+strstart+257 */
Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
if (*scan == *match) scan++;
len = (MAX_MATCH - 1) - (int)(strend-scan);
scan = strend - (MAX_MATCH-1);
#else /* UNALIGNED_OK */
if (match[best_len] != scan_end ||
match[best_len-1] != scan_end1 ||
*match != *scan ||
*++match != scan[1]) continue;
/* The check at best_len-1 can be removed because it will be made
* again later. (This heuristic is not always a win.)
* It is not necessary to compare scan[2] and match[2] since they
* are always equal when the other bytes match, given that
* the hash keys are equal and that HASH_BITS >= 8.
*/
scan += 2, match++;
Assert(*scan == *match, "match[2]?");
/* We check for insufficient lookahead only every 8th comparison;
* the 256th check will be made at strstart+258.
*/
do {
} while (*++scan == *++match && *++scan == *++match &&
*++scan == *++match && *++scan == *++match &&
*++scan == *++match && *++scan == *++match &&
*++scan == *++match && *++scan == *++match &&
scan < strend);
Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
len = MAX_MATCH - (int)(strend - scan);
scan = strend - MAX_MATCH;
#endif /* UNALIGNED_OK */
if (len > best_len) {
s->match_start = cur_match;
best_len = len;
if (len >= nice_match) break;
#ifdef UNALIGNED_OK
scan_end = *(ushf*)(scan+best_len-1);
#else
scan_end1 = scan[best_len-1];
scan_end = scan[best_len];
#endif
}
} while ((cur_match = prev[cur_match & wmask]) > limit
&& --chain_length != 0);
if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
return s->lookahead;
}
#endif /* ASMV */
#else /* FASTEST */
/* ---------------------------------------------------------------------------
* Optimized version for FASTEST only
*/
local uInt longest_match(s, cur_match)
deflate_state *s;
IPos cur_match; /* current match */
{
register Bytef *scan = s->window + s->strstart; /* current string */
register Bytef *match; /* matched string */
register int len; /* length of current match */
register Bytef *strend = s->window + s->strstart + MAX_MATCH;
/* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
* It is easy to get rid of this optimization if necessary.
*/
Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
Assert(cur_match < s->strstart, "no future");
match = s->window + cur_match;
/* Return failure if the match length is less than 2:
*/
if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
/* The check at best_len-1 can be removed because it will be made
* again later. (This heuristic is not always a win.)
* It is not necessary to compare scan[2] and match[2] since they
* are always equal when the other bytes match, given that
* the hash keys are equal and that HASH_BITS >= 8.
*/
scan += 2, match += 2;
Assert(*scan == *match, "match[2]?");
/* We check for insufficient lookahead only every 8th comparison;
* the 256th check will be made at strstart+258.
*/
do {
} while (*++scan == *++match && *++scan == *++match &&
*++scan == *++match && *++scan == *++match &&
*++scan == *++match && *++scan == *++match &&
*++scan == *++match && *++scan == *++match &&
scan < strend);
Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
len = MAX_MATCH - (int)(strend - scan);
if (len < MIN_MATCH) return MIN_MATCH - 1;
s->match_start = cur_match;
return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead;
}
#endif /* FASTEST */
#ifdef ZLIB_DEBUG
#define EQUAL 0
/* result of memcmp for equal strings */
/* ===========================================================================
* Check that the match at match_start is indeed a match.
*/
local void check_match(s, start, match, length)
deflate_state *s;
IPos start, match;
int length;
{
/* check that the match is indeed a match */
if (zmemcmp(s->window + match,
s->window + start, length) != EQUAL) {
fprintf(stderr, " start %u, match %u, length %d\n",
start, match, length);
do {
fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);
} while (--length != 0);
z_error("invalid match");
}
if (z_verbose > 1) {
fprintf(stderr,"\\[%d,%d]", start-match, length);
do { putc(s->window[start++], stderr); } while (--length != 0);
}
}
#else
# define check_match(s, start, match, length)
#endif /* ZLIB_DEBUG */
/* ===========================================================================
* Fill the window when the lookahead becomes insufficient.
* Updates strstart and lookahead.
*
* IN assertion: lookahead < MIN_LOOKAHEAD
* OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
* At least one byte has been read, or avail_in == 0; reads are
* performed for at least two bytes (required for the zip translate_eol
* option -- not supported here).
*/
local void fill_window(s)
deflate_state *s;
{
unsigned n;
unsigned more; /* Amount of free space at the end of the window. */
uInt wsize = s->w_size;
Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
do {
more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
/* Deal with !@#$% 64K limit: */
if (sizeof(int) <= 2) {
if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
more = wsize;
} else if (more == (unsigned)(-1)) {
/* Very unlikely, but possible on 16 bit machine if
* strstart == 0 && lookahead == 1 (input done a byte at time)
*/
more--;
}
}
/* If the window is almost full and there is insufficient lookahead,
* move the upper half to the lower one to make room in the upper half.
*/
if (s->strstart >= wsize+MAX_DIST(s)) {
zmemcpy(s->window, s->window+wsize, (unsigned)wsize - more);
s->match_start -= wsize;
s->strstart -= wsize; /* we now have strstart >= MAX_DIST */
s->block_start -= (long) wsize;
slide_hash(s);
more += wsize;
}
if (s->strm->avail_in == 0) break;
/* If there was no sliding:
* strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
* more == window_size - lookahead - strstart
* => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
* => more >= window_size - 2*WSIZE + 2
* In the BIG_MEM or MMAP case (not yet supported),
* window_size == input_size + MIN_LOOKAHEAD &&
* strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
* Otherwise, window_size == 2*WSIZE so more >= 2.
* If there was sliding, more >= WSIZE. So in all cases, more >= 2.
*/
Assert(more >= 2, "more < 2");
n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
s->lookahead += n;
/* Initialize the hash value now that we have some input: */
if (s->lookahead + s->insert >= MIN_MATCH) {
uInt str = s->strstart - s->insert;
s->ins_h = s->window[str];
UPDATE_HASH(s, s->ins_h, s->window[str + 1]);
#if MIN_MATCH != 3
Call UPDATE_HASH() MIN_MATCH-3 more times
#endif
while (s->insert) {
UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
#ifndef FASTEST
s->prev[str & s->w_mask] = s->head[s->ins_h];
#endif
s->head[s->ins_h] = (Pos)str;
str++;
s->insert--;
if (s->lookahead + s->insert < MIN_MATCH)
break;
}
}
/* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
* but this is not important since only literal bytes will be emitted.
*/
} while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
/* If the WIN_INIT bytes after the end of the current data have never been
* written, then zero those bytes in order to avoid memory check reports of
* the use of uninitialized (or uninitialised as Julian writes) bytes by
* the longest match routines. Update the high water mark for the next
* time through here. WIN_INIT is set to MAX_MATCH since the longest match
* routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
*/
if (s->high_water < s->window_size) {
ulg curr = s->strstart + (ulg)(s->lookahead);
ulg init;
if (s->high_water < curr) {
/* Previous high water mark below current data -- zero WIN_INIT
* bytes or up to end of window, whichever is less.
*/
init = s->window_size - curr;
if (init > WIN_INIT)
init = WIN_INIT;
zmemzero(s->window + curr, (unsigned)init);
s->high_water = curr + init;
}
else if (s->high_water < (ulg)curr + WIN_INIT) {
/* High water mark at or above current data, but below current data
* plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
* to end of window, whichever is less.
*/
init = (ulg)curr + WIN_INIT - s->high_water;
if (init > s->window_size - s->high_water)
init = s->window_size - s->high_water;
zmemzero(s->window + s->high_water, (unsigned)init);
s->high_water += init;
}
}
Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
"not enough room for search");
}
/* ===========================================================================
* Flush the current block, with given end-of-file flag.
* IN assertion: strstart is set to the end of the current match.
*/
#define FLUSH_BLOCK_ONLY(s, last) { \
_tr_flush_block(s, (s->block_start >= 0L ? \
(charf *)&s->window[(unsigned)s->block_start] : \
(charf *)Z_NULL), \
(ulg)((long)s->strstart - s->block_start), \
(last)); \
s->block_start = s->strstart; \
flush_pending(s->strm); \
Tracev((stderr,"[FLUSH]")); \
}
/* Same but force premature exit if necessary. */
#define FLUSH_BLOCK(s, last) { \
FLUSH_BLOCK_ONLY(s, last); \
if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \
}
/* Maximum stored block length in deflate format (not including header). */
#define MAX_STORED 65535
/* Minimum of a and b. */
#define MIN(a, b) ((a) > (b) ? (b) : (a))
/* ===========================================================================
* Copy without compression as much as possible from the input stream, return
* the current block state.
*
* In case deflateParams() is used to later switch to a non-zero compression
* level, s->matches (otherwise unused when storing) keeps track of the number
* of hash table slides to perform. If s->matches is 1, then one hash table
* slide will be done when switching. If s->matches is 2, the maximum value
* allowed here, then the hash table will be cleared, since two or more slides
* is the same as a clear.
*
* deflate_stored() is written to minimize the number of times an input byte is
* copied. It is most efficient with large input and output buffers, which
* maximizes the opportunites to have a single copy from next_in to next_out.
*/
local block_state deflate_stored(s, flush)
deflate_state *s;
int flush;
{
/* Smallest worthy block size when not flushing or finishing. By default
* this is 32K. This can be as small as 507 bytes for memLevel == 1. For
* large input and output buffers, the stored block size will be larger.
*/
unsigned min_block = MIN(s->pending_buf_size - 5, s->w_size);
/* Copy as many min_block or larger stored blocks directly to next_out as
* possible. If flushing, copy the remaining available input to next_out as
* stored blocks, if there is enough space.
*/
unsigned len, left, have, last = 0;
unsigned used = s->strm->avail_in;
do {
/* Set len to the maximum size block that we can copy directly with the
* available input data and output space. Set left to how much of that
* would be copied from what's left in the window.
*/
len = MAX_STORED; /* maximum deflate stored block length */
have = (s->bi_valid + 42) >> 3; /* number of header bytes */
if (s->strm->avail_out < have) /* need room for header */
break;
/* maximum stored block length that will fit in avail_out: */
have = s->strm->avail_out - have;
left = s->strstart - s->block_start; /* bytes left in window */
if (len > (ulg)left + s->strm->avail_in)
len = left + s->strm->avail_in; /* limit len to the input */
if (len > have)
len = have; /* limit len to the output */
/* If the stored block would be less than min_block in length, or if
* unable to copy all of the available input when flushing, then try
* copying to the window and the pending buffer instead. Also don't
* write an empty block when flushing -- deflate() does that.
*/
if (len < min_block && ((len == 0 && flush != Z_FINISH) ||
flush == Z_NO_FLUSH ||
len != left + s->strm->avail_in))
break;
/* Make a dummy stored block in pending to get the header bytes,
* including any pending bits. This also updates the debugging counts.
*/
last = flush == Z_FINISH && len == left + s->strm->avail_in ? 1 : 0;
_tr_stored_block(s, (char *)0, 0L, last);
/* Replace the lengths in the dummy stored block with len. */
s->pending_buf[s->pending - 4] = len;
s->pending_buf[s->pending - 3] = len >> 8;
s->pending_buf[s->pending - 2] = ~len;
s->pending_buf[s->pending - 1] = ~len >> 8;
/* Write the stored block header bytes. */
flush_pending(s->strm);
#ifdef ZLIB_DEBUG
/* Update debugging counts for the data about to be copied. */
s->compressed_len += len << 3;
s->bits_sent += len << 3;
#endif
/* Copy uncompressed bytes from the window to next_out. */
if (left) {
if (left > len)
left = len;
zmemcpy(s->strm->next_out, s->window + s->block_start, left);
s->strm->next_out += left;
s->strm->avail_out -= left;
s->strm->total_out += left;
s->block_start += left;
len -= left;
}
/* Copy uncompressed bytes directly from next_in to next_out, updating
* the check value.
*/
if (len) {
read_buf(s->strm, s->strm->next_out, len);
s->strm->next_out += len;
s->strm->avail_out -= len;
s->strm->total_out += len;
}
} while (last == 0);
/* Update the sliding window with the last s->w_size bytes of the copied
* data, or append all of the copied data to the existing window if less
* than s->w_size bytes were copied. Also update the number of bytes to
* insert in the hash tables, in the event that deflateParams() switches to
* a non-zero compression level.
*/
used -= s->strm->avail_in; /* number of input bytes directly copied */
if (used) {
/* If any input was used, then no unused input remains in the window,
* therefore s->block_start == s->strstart.
*/
if (used >= s->w_size) { /* supplant the previous history */
s->matches = 2; /* clear hash */
zmemcpy(s->window, s->strm->next_in - s->w_size, s->w_size);
s->strstart = s->w_size;
}
else {
if (s->window_size - s->strstart <= used) {
/* Slide the window down. */
s->strstart -= s->w_size;
zmemcpy(s->window, s->window + s->w_size, s->strstart);
if (s->matches < 2)
s->matches++; /* add a pending slide_hash() */
}
zmemcpy(s->window + s->strstart, s->strm->next_in - used, used);
s->strstart += used;
}
s->block_start = s->strstart;
s->insert += MIN(used, s->w_size - s->insert);
}
if (s->high_water < s->strstart)
s->high_water = s->strstart;
/* If the last block was written to next_out, then done. */
if (last)
return finish_done;
/* If flushing and all input has been consumed, then done. */
if (flush != Z_NO_FLUSH && flush != Z_FINISH &&
s->strm->avail_in == 0 && (long)s->strstart == s->block_start)
return block_done;
/* Fill the window with any remaining input. */
have = s->window_size - s->strstart - 1;
if (s->strm->avail_in > have && s->block_start >= (long)s->w_size) {
/* Slide the window down. */
s->block_start -= s->w_size;
s->strstart -= s->w_size;
zmemcpy(s->window, s->window + s->w_size, s->strstart);
if (s->matches < 2)
s->matches++; /* add a pending slide_hash() */
have += s->w_size; /* more space now */
}
if (have > s->strm->avail_in)
have = s->strm->avail_in;
if (have) {
read_buf(s->strm, s->window + s->strstart, have);
s->strstart += have;
}
if (s->high_water < s->strstart)
s->high_water = s->strstart;
/* There was not enough avail_out to write a complete worthy or flushed
* stored block to next_out. Write a stored block to pending instead, if we
* have enough input for a worthy block, or if flushing and there is enough
* room for the remaining input as a stored block in the pending buffer.
*/
have = (s->bi_valid + 42) >> 3; /* number of header bytes */
/* maximum stored block length that will fit in pending: */
have = MIN(s->pending_buf_size - have, MAX_STORED);
min_block = MIN(have, s->w_size);
left = s->strstart - s->block_start;
if (left >= min_block ||
((left || flush == Z_FINISH) && flush != Z_NO_FLUSH &&
s->strm->avail_in == 0 && left <= have)) {
len = MIN(left, have);
last = flush == Z_FINISH && s->strm->avail_in == 0 &&
len == left ? 1 : 0;
_tr_stored_block(s, (charf *)s->window + s->block_start, len, last);
s->block_start += len;
flush_pending(s->strm);
}
/* We've done all we can with the available input and output. */
return last ? finish_started : need_more;
}
/* ===========================================================================
* Compress as much as possible from the input stream, return the current
* block state.
* This function does not perform lazy evaluation of matches and inserts
* new strings in the dictionary only for unmatched strings or for short
* matches. It is used only for the fast compression options.
*/
local block_state deflate_fast(s, flush)
deflate_state *s;
int flush;
{
IPos hash_head; /* head of the hash chain */
int bflush; /* set if current block must be flushed */
for (;;) {
/* Make sure that we always have enough lookahead, except
* at the end of the input file. We need MAX_MATCH bytes
* for the next match, plus MIN_MATCH bytes to insert the
* string following the next match.
*/
if (s->lookahead < MIN_LOOKAHEAD) {
fill_window(s);
if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
return need_more;
}
if (s->lookahead == 0) break; /* flush the current block */
}
/* Insert the string window[strstart .. strstart+2] in the
* dictionary, and set hash_head to the head of the hash chain:
*/
hash_head = NIL;
if (s->lookahead >= MIN_MATCH) {
INSERT_STRING(s, s->strstart, hash_head);
}
/* Find the longest match, discarding those <= prev_length.
* At this point we have always match_length < MIN_MATCH
*/
if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) {
/* To simplify the code, we prevent matches with the string
* of window index 0 (in particular we have to avoid a match
* of the string with itself at the start of the input file).
*/
s->match_length = longest_match (s, hash_head);
/* longest_match() sets match_start */
}
if (s->match_length >= MIN_MATCH) {
check_match(s, s->strstart, s->match_start, s->match_length);
_tr_tally_dist(s, s->strstart - s->match_start,
s->match_length - MIN_MATCH, bflush);
s->lookahead -= s->match_length;
/* Insert new strings in the hash table only if the match length
* is not too large. This saves time but degrades compression.
*/
#ifndef FASTEST
if (s->match_length <= s->max_insert_length &&
s->lookahead >= MIN_MATCH) {
s->match_length--; /* string at strstart already in table */
do {
s->strstart++;
INSERT_STRING(s, s->strstart, hash_head);
/* strstart never exceeds WSIZE-MAX_MATCH, so there are
* always MIN_MATCH bytes ahead.
*/
} while (--s->match_length != 0);
s->strstart++;
} else
#endif
{
s->strstart += s->match_length;
s->match_length = 0;
s->ins_h = s->window[s->strstart];
UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
#if MIN_MATCH != 3
Call UPDATE_HASH() MIN_MATCH-3 more times
#endif
/* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
* matter since it will be recomputed at next deflate call.
*/
}
} else {
/* No match, output a literal byte */
Tracevv((stderr,"%c", s->window[s->strstart]));
_tr_tally_lit (s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
}
if (bflush) FLUSH_BLOCK(s, 0);
}
s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
if (flush == Z_FINISH) {
FLUSH_BLOCK(s, 1);
return finish_done;
}
if (s->last_lit)
FLUSH_BLOCK(s, 0);
return block_done;
}
#ifndef FASTEST
/* ===========================================================================
* Same as above, but achieves better compression. We use a lazy
* evaluation for matches: a match is finally adopted only if there is
* no better match at the next window position.
*/
local block_state deflate_slow(s, flush)
deflate_state *s;
int flush;
{
IPos hash_head; /* head of hash chain */
int bflush; /* set if current block must be flushed */
/* Process the input block. */
for (;;) {
/* Make sure that we always have enough lookahead, except
* at the end of the input file. We need MAX_MATCH bytes
* for the next match, plus MIN_MATCH bytes to insert the
* string following the next match.
*/
if (s->lookahead < MIN_LOOKAHEAD) {
fill_window(s);
if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
return need_more;
}
if (s->lookahead == 0) break; /* flush the current block */
}
/* Insert the string window[strstart .. strstart+2] in the
* dictionary, and set hash_head to the head of the hash chain:
*/
hash_head = NIL;
if (s->lookahead >= MIN_MATCH) {
INSERT_STRING(s, s->strstart, hash_head);
}
/* Find the longest match, discarding those <= prev_length.
*/
s->prev_length = s->match_length, s->prev_match = s->match_start;
s->match_length = MIN_MATCH-1;
if (hash_head != NIL && s->prev_length < s->max_lazy_match &&
s->strstart - hash_head <= MAX_DIST(s)) {
/* To simplify the code, we prevent matches with the string
* of window index 0 (in particular we have to avoid a match
* of the string with itself at the start of the input file).
*/
s->match_length = longest_match (s, hash_head);
/* longest_match() sets match_start */
if (s->match_length <= 5 && (s->strategy == Z_FILTERED
#if TOO_FAR <= 32767
|| (s->match_length == MIN_MATCH &&
s->strstart - s->match_start > TOO_FAR)
#endif
)) {
/* If prev_match is also MIN_MATCH, match_start is garbage
* but we will ignore the current match anyway.
*/
s->match_length = MIN_MATCH-1;
}
}
/* If there was a match at the previous step and the current
* match is not better, output the previous match:
*/
if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) {
uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
/* Do not insert strings in hash table beyond this. */
check_match(s, s->strstart-1, s->prev_match, s->prev_length);
_tr_tally_dist(s, s->strstart -1 - s->prev_match,
s->prev_length - MIN_MATCH, bflush);
/* Insert in hash table all strings up to the end of the match.
* strstart-1 and strstart are already inserted. If there is not
* enough lookahead, the last two strings are not inserted in
* the hash table.
*/
s->lookahead -= s->prev_length-1;
s->prev_length -= 2;
do {
if (++s->strstart <= max_insert) {
INSERT_STRING(s, s->strstart, hash_head);
}
} while (--s->prev_length != 0);
s->match_available = 0;
s->match_length = MIN_MATCH-1;
s->strstart++;
if (bflush) FLUSH_BLOCK(s, 0);
} else if (s->match_available) {
/* If there was no match at the previous position, output a
* single literal. If there was a match but the current match
* is longer, truncate the previous match to a single literal.
*/
Tracevv((stderr,"%c", s->window[s->strstart-1]));
_tr_tally_lit(s, s->window[s->strstart-1], bflush);
if (bflush) {
FLUSH_BLOCK_ONLY(s, 0);
}
s->strstart++;
s->lookahead--;
if (s->strm->avail_out == 0) return need_more;
} else {
/* There is no previous match to compare with, wait for
* the next step to decide.
*/
s->match_available = 1;
s->strstart++;
s->lookahead--;
}
}
Assert (flush != Z_NO_FLUSH, "no flush?");
if (s->match_available) {
Tracevv((stderr,"%c", s->window[s->strstart-1]));
_tr_tally_lit(s, s->window[s->strstart-1], bflush);
s->match_available = 0;
}
s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
if (flush == Z_FINISH) {
FLUSH_BLOCK(s, 1);
return finish_done;
}
if (s->last_lit)
FLUSH_BLOCK(s, 0);
return block_done;
}
#endif /* FASTEST */
/* ===========================================================================
* For Z_RLE, simply look for runs of bytes, generate matches only of distance
* one. Do not maintain a hash table. (It will be regenerated if this run of
* deflate switches away from Z_RLE.)
*/
local block_state deflate_rle(s, flush)
deflate_state *s;
int flush;
{
int bflush; /* set if current block must be flushed */
uInt prev; /* byte at distance one to match */
Bytef *scan, *strend; /* scan goes up to strend for length of run */
for (;;) {
/* Make sure that we always have enough lookahead, except
* at the end of the input file. We need MAX_MATCH bytes
* for the longest run, plus one for the unrolled loop.
*/
if (s->lookahead <= MAX_MATCH) {
fill_window(s);
if (s->lookahead <= MAX_MATCH && flush == Z_NO_FLUSH) {
return need_more;
}
if (s->lookahead == 0) break; /* flush the current block */
}
/* See how many times the previous byte repeats */
s->match_length = 0;
if (s->lookahead >= MIN_MATCH && s->strstart > 0) {
scan = s->window + s->strstart - 1;
prev = *scan;
if (prev == *++scan && prev == *++scan && prev == *++scan) {
strend = s->window + s->strstart + MAX_MATCH;
do {
} while (prev == *++scan && prev == *++scan &&
prev == *++scan && prev == *++scan &&
prev == *++scan && prev == *++scan &&
prev == *++scan && prev == *++scan &&
scan < strend);
s->match_length = MAX_MATCH - (uInt)(strend - scan);
if (s->match_length > s->lookahead)
s->match_length = s->lookahead;
}
Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
}
/* Emit match if have run of MIN_MATCH or longer, else emit literal */
if (s->match_length >= MIN_MATCH) {
check_match(s, s->strstart, s->strstart - 1, s->match_length);
_tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush);
s->lookahead -= s->match_length;
s->strstart += s->match_length;
s->match_length = 0;
} else {
/* No match, output a literal byte */
Tracevv((stderr,"%c", s->window[s->strstart]));
_tr_tally_lit (s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
}
if (bflush) FLUSH_BLOCK(s, 0);
}
s->insert = 0;
if (flush == Z_FINISH) {
FLUSH_BLOCK(s, 1);
return finish_done;
}
if (s->last_lit)
FLUSH_BLOCK(s, 0);
return block_done;
}
/* ===========================================================================
* For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table.
* (It will be regenerated if this run of deflate switches away from Huffman.)
*/
local block_state deflate_huff(s, flush)
deflate_state *s;
int flush;
{
int bflush; /* set if current block must be flushed */
for (;;) {
/* Make sure that we have a literal to write. */
if (s->lookahead == 0) {
fill_window(s);
if (s->lookahead == 0) {
if (flush == Z_NO_FLUSH)
return need_more;
break; /* flush the current block */
}
}
/* Output a literal byte */
s->match_length = 0;
Tracevv((stderr,"%c", s->window[s->strstart]));
_tr_tally_lit (s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
if (bflush) FLUSH_BLOCK(s, 0);
}
s->insert = 0;
if (flush == Z_FINISH) {
FLUSH_BLOCK(s, 1);
return finish_done;
}
if (s->last_lit)
FLUSH_BLOCK(s, 0);
return block_done;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/trees.h
|
/* header created automatically with -DGEN_TREES_H */
local const ct_data static_ltree[L_CODES+2] = {
{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}},
{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}},
{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}},
{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}},
{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}},
{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}},
{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}},
{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}},
{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}},
{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}},
{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}},
{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}},
{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}},
{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}},
{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}},
{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}},
{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}},
{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}},
{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}},
{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}},
{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}},
{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}},
{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}},
{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}},
{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}},
{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}},
{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}},
{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}},
{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}},
{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}},
{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}},
{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}},
{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}},
{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}},
{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}},
{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}},
{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}},
{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}},
{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}},
{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}},
{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}},
{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}},
{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}},
{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}},
{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}},
{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}},
{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}},
{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}},
{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}},
{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}},
{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}},
{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}},
{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}},
{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}},
{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}},
{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}},
{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}},
{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}}
};
local const ct_data static_dtree[D_CODES] = {
{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
};
const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {
0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8,
8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17,
18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
};
const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {
0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12,
13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
};
local const int base_length[LENGTH_CODES] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
64, 80, 96, 112, 128, 160, 192, 224, 0
};
local const int base_dist[D_CODES] = {
0, 1, 2, 3, 4, 6, 8, 12, 16, 24,
32, 48, 64, 96, 128, 192, 256, 384, 512, 768,
1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576
};
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/zconf.h
|
/* zconf.h -- configuration of the zlib compression library
* Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#ifndef ZCONF_H
#define ZCONF_H
/*
* If you *really* need a unique prefix for all types and library functions,
* compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
* Even better than compiling with -DZ_PREFIX would be to use configure to set
* this permanently in zconf.h using "./configure --zprefix".
*/
#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */
# define Z_PREFIX_SET
/* all linked symbols and init macros */
# define _dist_code z__dist_code
# define _length_code z__length_code
# define _tr_align z__tr_align
# define _tr_flush_bits z__tr_flush_bits
# define _tr_flush_block z__tr_flush_block
# define _tr_init z__tr_init
# define _tr_stored_block z__tr_stored_block
# define _tr_tally z__tr_tally
# define adler32 z_adler32
# define adler32_combine z_adler32_combine
# define adler32_combine64 z_adler32_combine64
# define adler32_z z_adler32_z
# ifndef Z_SOLO
# define compress z_compress
# define compress2 z_compress2
# define compressBound z_compressBound
# endif
# define crc32 z_crc32
# define crc32_combine z_crc32_combine
# define crc32_combine64 z_crc32_combine64
# define crc32_z z_crc32_z
# define deflate z_deflate
# define deflateBound z_deflateBound
# define deflateCopy z_deflateCopy
# define deflateEnd z_deflateEnd
# define deflateGetDictionary z_deflateGetDictionary
# define deflateInit z_deflateInit
# define deflateInit2 z_deflateInit2
# define deflateInit2_ z_deflateInit2_
# define deflateInit_ z_deflateInit_
# define deflateParams z_deflateParams
# define deflatePending z_deflatePending
# define deflatePrime z_deflatePrime
# define deflateReset z_deflateReset
# define deflateResetKeep z_deflateResetKeep
# define deflateSetDictionary z_deflateSetDictionary
# define deflateSetHeader z_deflateSetHeader
# define deflateTune z_deflateTune
# define deflate_copyright z_deflate_copyright
# define get_crc_table z_get_crc_table
# ifndef Z_SOLO
# define gz_error z_gz_error
# define gz_intmax z_gz_intmax
# define gz_strwinerror z_gz_strwinerror
# define gzbuffer z_gzbuffer
# define gzclearerr z_gzclearerr
# define gzclose z_gzclose
# define gzclose_r z_gzclose_r
# define gzclose_w z_gzclose_w
# define gzdirect z_gzdirect
# define gzdopen z_gzdopen
# define gzeof z_gzeof
# define gzerror z_gzerror
# define gzflush z_gzflush
# define gzfread z_gzfread
# define gzfwrite z_gzfwrite
# define gzgetc z_gzgetc
# define gzgetc_ z_gzgetc_
# define gzgets z_gzgets
# define gzoffset z_gzoffset
# define gzoffset64 z_gzoffset64
# define gzopen z_gzopen
# define gzopen64 z_gzopen64
# ifdef _WIN32
# define gzopen_w z_gzopen_w
# endif
# define gzprintf z_gzprintf
# define gzputc z_gzputc
# define gzputs z_gzputs
# define gzread z_gzread
# define gzrewind z_gzrewind
# define gzseek z_gzseek
# define gzseek64 z_gzseek64
# define gzsetparams z_gzsetparams
# define gztell z_gztell
# define gztell64 z_gztell64
# define gzungetc z_gzungetc
# define gzvprintf z_gzvprintf
# define gzwrite z_gzwrite
# endif
# define inflate z_inflate
# define inflateBack z_inflateBack
# define inflateBackEnd z_inflateBackEnd
# define inflateBackInit z_inflateBackInit
# define inflateBackInit_ z_inflateBackInit_
# define inflateCodesUsed z_inflateCodesUsed
# define inflateCopy z_inflateCopy
# define inflateEnd z_inflateEnd
# define inflateGetDictionary z_inflateGetDictionary
# define inflateGetHeader z_inflateGetHeader
# define inflateInit z_inflateInit
# define inflateInit2 z_inflateInit2
# define inflateInit2_ z_inflateInit2_
# define inflateInit_ z_inflateInit_
# define inflateMark z_inflateMark
# define inflatePrime z_inflatePrime
# define inflateReset z_inflateReset
# define inflateReset2 z_inflateReset2
# define inflateResetKeep z_inflateResetKeep
# define inflateSetDictionary z_inflateSetDictionary
# define inflateSync z_inflateSync
# define inflateSyncPoint z_inflateSyncPoint
# define inflateUndermine z_inflateUndermine
# define inflateValidate z_inflateValidate
# define inflate_copyright z_inflate_copyright
# define inflate_fast z_inflate_fast
# define inflate_table z_inflate_table
# ifndef Z_SOLO
# define uncompress z_uncompress
# define uncompress2 z_uncompress2
# endif
# define zError z_zError
# ifndef Z_SOLO
# define zcalloc z_zcalloc
# define zcfree z_zcfree
# endif
# define zlibCompileFlags z_zlibCompileFlags
# define zlibVersion z_zlibVersion
/* all zlib typedefs in zlib.h and zconf.h */
# define Byte z_Byte
# define Bytef z_Bytef
# define alloc_func z_alloc_func
# define charf z_charf
# define free_func z_free_func
# ifndef Z_SOLO
# define gzFile z_gzFile
# endif
# define gz_header z_gz_header
# define gz_headerp z_gz_headerp
# define in_func z_in_func
# define intf z_intf
# define out_func z_out_func
# define uInt z_uInt
# define uIntf z_uIntf
# define uLong z_uLong
# define uLongf z_uLongf
# define voidp z_voidp
# define voidpc z_voidpc
# define voidpf z_voidpf
/* all zlib structs in zlib.h and zconf.h */
# define gz_header_s z_gz_header_s
# define internal_state z_internal_state
#endif
#if defined(__MSDOS__) && !defined(MSDOS)
# define MSDOS
#endif
#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
# define OS2
#endif
#if defined(_WINDOWS) && !defined(WINDOWS)
# define WINDOWS
#endif
#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
# ifndef WIN32
# define WIN32
# endif
#endif
#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
# ifndef SYS16BIT
# define SYS16BIT
# endif
# endif
#endif
/*
* Compile with -DMAXSEG_64K if the alloc function cannot allocate more
* than 64k bytes at a time (needed on systems with 16-bit int).
*/
#ifdef SYS16BIT
# define MAXSEG_64K
#endif
#ifdef MSDOS
# define UNALIGNED_OK
#endif
#ifdef __STDC_VERSION__
# ifndef STDC
# define STDC
# endif
# if __STDC_VERSION__ >= 199901L
# ifndef STDC99
# define STDC99
# endif
# endif
#endif
#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
# define STDC
#endif
#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
# define STDC
#endif
#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
# define STDC
#endif
#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
# define STDC
#endif
#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
# define STDC
#endif
#ifndef STDC
# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
# define const /* note: need a more gentle solution here */
# endif
#endif
#if defined(ZLIB_CONST) && !defined(z_const)
# define z_const const
#else
# define z_const
#endif
#ifdef Z_SOLO
typedef unsigned long z_size_t;
#else
# define z_longlong long long
# if defined(NO_SIZE_T)
typedef unsigned NO_SIZE_T z_size_t;
# elif defined(STDC)
# include <stddef.h>
typedef size_t z_size_t;
# else
typedef unsigned long z_size_t;
# endif
# undef z_longlong
#endif
/* Maximum value for memLevel in deflateInit2 */
#ifndef MAX_MEM_LEVEL
# ifdef MAXSEG_64K
# define MAX_MEM_LEVEL 8
# else
# define MAX_MEM_LEVEL 9
# endif
#endif
/* Maximum value for windowBits in deflateInit2 and inflateInit2.
* WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
* created by gzip. (Files created by minigzip can still be extracted by
* gzip.)
*/
#ifndef MAX_WBITS
# define MAX_WBITS 15 /* 32K LZ77 window */
#endif
/* The memory requirements for deflate are (in bytes):
(1 << (windowBits+2)) + (1 << (memLevel+9))
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
plus a few kilobytes for small objects. For example, if you want to reduce
the default memory requirements from 256K to 128K, compile with
make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
Of course this will generally degrade compression (there's no free lunch).
The memory requirements for inflate are (in bytes) 1 << windowBits
that is, 32K for windowBits=15 (default value) plus about 7 kilobytes
for small objects.
*/
/* Type declarations */
#ifndef OF /* function prototypes */
# ifdef STDC
# define OF(args) args
# else
# define OF(args) ()
# endif
#endif
#ifndef Z_ARG /* function prototypes for stdarg */
# if defined(STDC) || defined(Z_HAVE_STDARG_H)
# define Z_ARG(args) args
# else
# define Z_ARG(args) ()
# endif
#endif
/* The following definitions for FAR are needed only for MSDOS mixed
* model programming (small or medium model with some far allocations).
* This was tested only with MSC; for other MSDOS compilers you may have
* to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
* just define FAR to be empty.
*/
#ifdef SYS16BIT
# if defined(M_I86SM) || defined(M_I86MM)
/* MSC small or medium model */
# define SMALL_MEDIUM
# ifdef _MSC_VER
# define FAR _far
# else
# define FAR far
# endif
# endif
# if (defined(__SMALL__) || defined(__MEDIUM__))
/* Turbo C small or medium model */
# define SMALL_MEDIUM
# ifdef __BORLANDC__
# define FAR _far
# else
# define FAR far
# endif
# endif
#endif
#if defined(WINDOWS) || defined(WIN32)
/* If building or using zlib as a DLL, define ZLIB_DLL.
* This is not mandatory, but it offers a little performance increase.
*/
# ifdef ZLIB_DLL
# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
# ifdef ZLIB_INTERNAL
# define ZEXTERN extern __declspec(dllexport)
# else
# define ZEXTERN extern __declspec(dllimport)
# endif
# endif
# endif /* ZLIB_DLL */
/* If building or using zlib with the WINAPI/WINAPIV calling convention,
* define ZLIB_WINAPI.
* Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
*/
# ifdef ZLIB_WINAPI
# ifdef FAR
# undef FAR
# endif
# include <windows.h>
/* No need for _export, use ZLIB.DEF instead. */
/* For complete Windows compatibility, use WINAPI, not __stdcall. */
# define ZEXPORT WINAPI
# ifdef WIN32
# define ZEXPORTVA WINAPIV
# else
# define ZEXPORTVA FAR CDECL
# endif
# endif
#endif
#if defined (__BEOS__)
# ifdef ZLIB_DLL
# ifdef ZLIB_INTERNAL
# define ZEXPORT __declspec(dllexport)
# define ZEXPORTVA __declspec(dllexport)
# else
# define ZEXPORT __declspec(dllimport)
# define ZEXPORTVA __declspec(dllimport)
# endif
# endif
#endif
#ifndef ZEXTERN
# define ZEXTERN extern
#endif
#ifndef ZEXPORT
# define ZEXPORT
#endif
#ifndef ZEXPORTVA
# define ZEXPORTVA
#endif
#ifndef FAR
# define FAR
#endif
#if !defined(__MACTYPES__)
typedef unsigned char Byte; /* 8 bits */
#endif
typedef unsigned int uInt; /* 16 bits or more */
typedef unsigned long uLong; /* 32 bits or more */
#ifdef SMALL_MEDIUM
/* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
# define Bytef Byte FAR
#else
typedef Byte FAR Bytef;
#endif
typedef char FAR charf;
typedef int FAR intf;
typedef uInt FAR uIntf;
typedef uLong FAR uLongf;
#ifdef STDC
typedef void const *voidpc;
typedef void FAR *voidpf;
typedef void *voidp;
#else
typedef Byte const *voidpc;
typedef Byte FAR *voidpf;
typedef Byte *voidp;
#endif
#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
# include <limits.h>
# if (UINT_MAX == 0xffffffffUL)
# define Z_U4 unsigned
# elif (ULONG_MAX == 0xffffffffUL)
# define Z_U4 unsigned long
# elif (USHRT_MAX == 0xffffffffUL)
# define Z_U4 unsigned short
# endif
#endif
#ifdef Z_U4
typedef Z_U4 z_crc_t;
#else
typedef unsigned long z_crc_t;
#endif
#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */
# define Z_HAVE_UNISTD_H
#endif
#ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */
# define Z_HAVE_STDARG_H
#endif
#ifdef STDC
# ifndef Z_SOLO
# include <sys/types.h> /* for off_t */
# endif
#endif
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
# ifndef Z_SOLO
# include <stdarg.h> /* for va_list */
# endif
#endif
#ifdef _WIN32
# ifndef Z_SOLO
# include <stddef.h> /* for wchar_t */
# endif
#endif
/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
* "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
* though the former does not conform to the LFS document), but considering
* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
* equivalently requesting no 64-bit operations
*/
#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
# undef _LARGEFILE64_SOURCE
#endif
#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
# define Z_HAVE_UNISTD_H
#endif
#ifndef Z_SOLO
# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */
# endif
# ifndef z_off_t
# define z_off_t off_t
# endif
# endif
#endif
#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
# define Z_LFS64
#endif
#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
# define Z_LARGE64
#endif
#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
# define Z_WANT64
#endif
#if !defined(SEEK_SET) && !defined(Z_SOLO)
# define SEEK_SET 0 /* Seek from beginning of file. */
# define SEEK_CUR 1 /* Seek from current position. */
# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
#endif
#ifndef z_off_t
# define z_off_t long
#endif
#if !defined(_WIN32) && defined(Z_LARGE64)
# define z_off64_t off64_t
#else
# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
# define z_off64_t __int64
# else
# define z_off64_t z_off_t
# endif
#endif
/* MVS linker does not support external names larger than 8 bytes */
#if defined(__MVS__)
#pragma map(deflateInit_,"DEIN")
#pragma map(deflateInit2_,"DEIN2")
#pragma map(deflateEnd,"DEEND")
#pragma map(deflateBound,"DEBND")
#pragma map(inflateInit_,"ININ")
#pragma map(inflateInit2_,"ININ2")
#pragma map(inflateEnd,"INEND")
#pragma map(inflateSync,"INSY")
#pragma map(inflateSetDictionary,"INSEDI")
#pragma map(compressBound,"CMBND")
#pragma map(inflate_table,"INTABL")
#pragma map(inflate_fast,"INFA")
#pragma map(inflate_copyright,"INCOPY")
#endif
#endif /* ZCONF_H */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/inflate.c
|
/* inflate.c -- zlib decompression
* Copyright (C) 1995-2016 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/*
* Change history:
*
* 1.2.beta0 24 Nov 2002
* - First version -- complete rewrite of inflate to simplify code, avoid
* creation of window when not needed, minimize use of window when it is
* needed, make inffast.c even faster, implement gzip decoding, and to
* improve code readability and style over the previous zlib inflate code
*
* 1.2.beta1 25 Nov 2002
* - Use pointers for available input and output checking in inffast.c
* - Remove input and output counters in inffast.c
* - Change inffast.c entry and loop from avail_in >= 7 to >= 6
* - Remove unnecessary second byte pull from length extra in inffast.c
* - Unroll direct copy to three copies per loop in inffast.c
*
* 1.2.beta2 4 Dec 2002
* - Change external routine names to reduce potential conflicts
* - Correct filename to inffixed.h for fixed tables in inflate.c
* - Make hbuf[] unsigned char to match parameter type in inflate.c
* - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset)
* to avoid negation problem on Alphas (64 bit) in inflate.c
*
* 1.2.beta3 22 Dec 2002
* - Add comments on state->bits assertion in inffast.c
* - Add comments on op field in inftrees.h
* - Fix bug in reuse of allocated window after inflateReset()
* - Remove bit fields--back to byte structure for speed
* - Remove distance extra == 0 check in inflate_fast()--only helps for lengths
* - Change post-increments to pre-increments in inflate_fast(), PPC biased?
* - Add compile time option, POSTINC, to use post-increments instead (Intel?)
* - Make MATCH copy in inflate() much faster for when inflate_fast() not used
* - Use local copies of stream next and avail values, as well as local bit
* buffer and bit count in inflate()--for speed when inflate_fast() not used
*
* 1.2.beta4 1 Jan 2003
* - Split ptr - 257 statements in inflate_table() to avoid compiler warnings
* - Move a comment on output buffer sizes from inffast.c to inflate.c
* - Add comments in inffast.c to introduce the inflate_fast() routine
* - Rearrange window copies in inflate_fast() for speed and simplification
* - Unroll last copy for window match in inflate_fast()
* - Use local copies of window variables in inflate_fast() for speed
* - Pull out common wnext == 0 case for speed in inflate_fast()
* - Make op and len in inflate_fast() unsigned for consistency
* - Add FAR to lcode and dcode declarations in inflate_fast()
* - Simplified bad distance check in inflate_fast()
* - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new
* source file infback.c to provide a call-back interface to inflate for
* programs like gzip and unzip -- uses window as output buffer to avoid
* window copying
*
* 1.2.beta5 1 Jan 2003
* - Improved inflateBack() interface to allow the caller to provide initial
* input in strm.
* - Fixed stored blocks bug in inflateBack()
*
* 1.2.beta6 4 Jan 2003
* - Added comments in inffast.c on effectiveness of POSTINC
* - Typecasting all around to reduce compiler warnings
* - Changed loops from while (1) or do {} while (1) to for (;;), again to
* make compilers happy
* - Changed type of window in inflateBackInit() to unsigned char *
*
* 1.2.beta7 27 Jan 2003
* - Changed many types to unsigned or unsigned short to avoid warnings
* - Added inflateCopy() function
*
* 1.2.0 9 Mar 2003
* - Changed inflateBack() interface to provide separate opaque descriptors
* for the in() and out() functions
* - Changed inflateBack() argument and in_func typedef to swap the length
* and buffer address return values for the input function
* - Check next_in and next_out for Z_NULL on entry to inflate()
*
* The history for versions after 1.2.0 are in ChangeLog in zlib distribution.
*/
#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"
#ifdef MAKEFIXED
# ifndef BUILDFIXED
# define BUILDFIXED
# endif
#endif
/* function prototypes */
local int inflateStateCheck OF((z_streamp strm));
local void fixedtables OF((struct inflate_state FAR *state));
local int updatewindow OF((z_streamp strm, const unsigned char FAR *end,
unsigned copy));
#ifdef BUILDFIXED
void makefixed OF((void));
#endif
local unsigned syncsearch OF((unsigned FAR *have, const unsigned char FAR *buf,
unsigned len));
local int inflateStateCheck(strm)
z_streamp strm;
{
struct inflate_state FAR *state;
if (strm == Z_NULL ||
strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0)
return 1;
state = (struct inflate_state FAR *)strm->state;
if (state == Z_NULL || state->strm != strm ||
state->mode < HEAD || state->mode > SYNC)
return 1;
return 0;
}
int ZEXPORT inflateResetKeep(strm)
z_streamp strm;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
strm->total_in = strm->total_out = state->total = 0;
strm->msg = Z_NULL;
if (state->wrap) /* to support ill-conceived Java test suite */
strm->adler = state->wrap & 1;
state->mode = HEAD;
state->last = 0;
state->havedict = 0;
state->dmax = 32768U;
state->head = Z_NULL;
state->hold = 0;
state->bits = 0;
state->lencode = state->distcode = state->next = state->codes;
state->sane = 1;
state->back = -1;
Tracev((stderr, "inflate: reset\n"));
return Z_OK;
}
int ZEXPORT inflateReset(strm)
z_streamp strm;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
state->wsize = 0;
state->whave = 0;
state->wnext = 0;
return inflateResetKeep(strm);
}
int ZEXPORT inflateReset2(strm, windowBits)
z_streamp strm;
int windowBits;
{
int wrap;
struct inflate_state FAR *state;
/* get the state */
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
/* extract wrap request from windowBits parameter */
if (windowBits < 0) {
wrap = 0;
windowBits = -windowBits;
}
else {
wrap = (windowBits >> 4) + 5;
#ifdef GUNZIP
if (windowBits < 48)
windowBits &= 15;
#endif
}
/* set number of window bits, free window if different */
if (windowBits && (windowBits < 8 || windowBits > 15))
return Z_STREAM_ERROR;
if (state->window != Z_NULL && state->wbits != (unsigned)windowBits) {
ZFREE(strm, state->window);
state->window = Z_NULL;
}
/* update state and reset the rest of it */
state->wrap = wrap;
state->wbits = (unsigned)windowBits;
return inflateReset(strm);
}
int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
z_streamp strm;
int windowBits;
const char *version;
int stream_size;
{
int ret;
struct inflate_state FAR *state;
if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
stream_size != (int)(sizeof(z_stream)))
return Z_VERSION_ERROR;
if (strm == Z_NULL) return Z_STREAM_ERROR;
strm->msg = Z_NULL; /* in case we return an error */
if (strm->zalloc == (alloc_func)0) {
#ifdef Z_SOLO
return Z_STREAM_ERROR;
#else
strm->zalloc = zcalloc;
strm->opaque = (voidpf)0;
#endif
}
if (strm->zfree == (free_func)0)
#ifdef Z_SOLO
return Z_STREAM_ERROR;
#else
strm->zfree = zcfree;
#endif
state = (struct inflate_state FAR *)
ZALLOC(strm, 1, sizeof(struct inflate_state));
if (state == Z_NULL) return Z_MEM_ERROR;
Tracev((stderr, "inflate: allocated\n"));
strm->state = (struct internal_state FAR *)state;
state->strm = strm;
state->window = Z_NULL;
state->mode = HEAD; /* to pass state test in inflateReset2() */
ret = inflateReset2(strm, windowBits);
if (ret != Z_OK) {
ZFREE(strm, state);
strm->state = Z_NULL;
}
return ret;
}
int ZEXPORT inflateInit_(strm, version, stream_size)
z_streamp strm;
const char *version;
int stream_size;
{
return inflateInit2_(strm, DEF_WBITS, version, stream_size);
}
int ZEXPORT inflatePrime(strm, bits, value)
z_streamp strm;
int bits;
int value;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if (bits < 0) {
state->hold = 0;
state->bits = 0;
return Z_OK;
}
if (bits > 16 || state->bits + (uInt)bits > 32) return Z_STREAM_ERROR;
value &= (1L << bits) - 1;
state->hold += (unsigned)value << state->bits;
state->bits += (uInt)bits;
return Z_OK;
}
/*
Return state with length and distance decoding tables and index sizes set to
fixed code decoding. Normally this returns fixed tables from inffixed.h.
If BUILDFIXED is defined, then instead this routine builds the tables the
first time it's called, and returns those tables the first time and
thereafter. This reduces the size of the code by about 2K bytes, in
exchange for a little execution time. However, BUILDFIXED should not be
used for threaded applications, since the rewriting of the tables and virgin
may not be thread-safe.
*/
local void fixedtables(state)
struct inflate_state FAR *state;
{
#ifdef BUILDFIXED
static int virgin = 1;
static code *lenfix, *distfix;
static code fixed[544];
/* build fixed huffman tables if first call (may not be thread safe) */
if (virgin) {
unsigned sym, bits;
static code *next;
/* literal/length table */
sym = 0;
while (sym < 144) state->lens[sym++] = 8;
while (sym < 256) state->lens[sym++] = 9;
while (sym < 280) state->lens[sym++] = 7;
while (sym < 288) state->lens[sym++] = 8;
next = fixed;
lenfix = next;
bits = 9;
inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
/* distance table */
sym = 0;
while (sym < 32) state->lens[sym++] = 5;
distfix = next;
bits = 5;
inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
/* do this just once */
virgin = 0;
}
#else /* !BUILDFIXED */
# include "inffixed.h"
#endif /* BUILDFIXED */
state->lencode = lenfix;
state->lenbits = 9;
state->distcode = distfix;
state->distbits = 5;
}
#ifdef MAKEFIXED
#include <stdio.h>
/*
Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also
defines BUILDFIXED, so the tables are built on the fly. makefixed() writes
those tables to stdout, which would be piped to inffixed.h. A small program
can simply call makefixed to do this:
void makefixed(void);
int main(void)
{
makefixed();
return 0;
}
Then that can be linked with zlib built with MAKEFIXED defined and run:
a.out > inffixed.h
*/
void makefixed()
{
unsigned low, size;
struct inflate_state state;
fixedtables(&state);
puts(" /* inffixed.h -- table for decoding fixed codes");
puts(" * Generated automatically by makefixed().");
puts(" */");
puts("");
puts(" /* WARNING: this file should *not* be used by applications.");
puts(" It is part of the implementation of this library and is");
puts(" subject to change. Applications should only use zlib.h.");
puts(" */");
puts("");
size = 1U << 9;
printf(" static const code lenfix[%u] = {", size);
low = 0;
for (;;) {
if ((low % 7) == 0) printf("\n ");
printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op,
state.lencode[low].bits, state.lencode[low].val);
if (++low == size) break;
putchar(',');
}
puts("\n };");
size = 1U << 5;
printf("\n static const code distfix[%u] = {", size);
low = 0;
for (;;) {
if ((low % 6) == 0) printf("\n ");
printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits,
state.distcode[low].val);
if (++low == size) break;
putchar(',');
}
puts("\n };");
}
#endif /* MAKEFIXED */
/*
Update the window with the last wsize (normally 32K) bytes written before
returning. If window does not exist yet, create it. This is only called
when a window is already in use, or when output has been written during this
inflate call, but the end of the deflate stream has not been reached yet.
It is also called to create a window for dictionary data when a dictionary
is loaded.
Providing output buffers larger than 32K to inflate() should provide a speed
advantage, since only the last 32K of output is copied to the sliding window
upon return from inflate(), and since all distances after the first 32K of
output will fall in the output data, making match copies simpler and faster.
The advantage may be dependent on the size of the processor's data caches.
*/
local int updatewindow(strm, end, copy)
z_streamp strm;
const Bytef *end;
unsigned copy;
{
struct inflate_state FAR *state;
unsigned dist;
state = (struct inflate_state FAR *)strm->state;
/* if it hasn't been done already, allocate space for the window */
if (state->window == Z_NULL) {
state->window = (unsigned char FAR *)
ZALLOC(strm, 1U << state->wbits,
sizeof(unsigned char));
if (state->window == Z_NULL) return 1;
}
/* if window not in use yet, initialize */
if (state->wsize == 0) {
state->wsize = 1U << state->wbits;
state->wnext = 0;
state->whave = 0;
}
/* copy state->wsize or less output bytes into the circular window */
if (copy >= state->wsize) {
zmemcpy(state->window, end - state->wsize, state->wsize);
state->wnext = 0;
state->whave = state->wsize;
}
else {
dist = state->wsize - state->wnext;
if (dist > copy) dist = copy;
zmemcpy(state->window + state->wnext, end - copy, dist);
copy -= dist;
if (copy) {
zmemcpy(state->window, end - copy, copy);
state->wnext = copy;
state->whave = state->wsize;
}
else {
state->wnext += dist;
if (state->wnext == state->wsize) state->wnext = 0;
if (state->whave < state->wsize) state->whave += dist;
}
}
return 0;
}
/* Macros for inflate(): */
/* check function to use adler32() for zlib or crc32() for gzip */
#ifdef GUNZIP
# define UPDATE(check, buf, len) \
(state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
#else
# define UPDATE(check, buf, len) adler32(check, buf, len)
#endif
/* check macros for header crc */
#ifdef GUNZIP
# define CRC2(check, word) \
do { \
hbuf[0] = (unsigned char)(word); \
hbuf[1] = (unsigned char)((word) >> 8); \
check = crc32(check, hbuf, 2); \
} while (0)
# define CRC4(check, word) \
do { \
hbuf[0] = (unsigned char)(word); \
hbuf[1] = (unsigned char)((word) >> 8); \
hbuf[2] = (unsigned char)((word) >> 16); \
hbuf[3] = (unsigned char)((word) >> 24); \
check = crc32(check, hbuf, 4); \
} while (0)
#endif
/* Load registers with state in inflate() for speed */
#define LOAD() \
do { \
put = strm->next_out; \
left = strm->avail_out; \
next = strm->next_in; \
have = strm->avail_in; \
hold = state->hold; \
bits = state->bits; \
} while (0)
/* Restore state from registers in inflate() */
#define RESTORE() \
do { \
strm->next_out = put; \
strm->avail_out = left; \
strm->next_in = next; \
strm->avail_in = have; \
state->hold = hold; \
state->bits = bits; \
} while (0)
/* Clear the input bit accumulator */
#define INITBITS() \
do { \
hold = 0; \
bits = 0; \
} while (0)
/* Get a byte of input into the bit accumulator, or return from inflate()
if there is no input available. */
#define PULLBYTE() \
do { \
if (have == 0) goto inf_leave; \
have--; \
hold += (unsigned long)(*next++) << bits; \
bits += 8; \
} while (0)
/* Assure that there are at least n bits in the bit accumulator. If there is
not enough available input to do that, then return from inflate(). */
#define NEEDBITS(n) \
do { \
while (bits < (unsigned)(n)) \
PULLBYTE(); \
} while (0)
/* Return the low n bits of the bit accumulator (n < 16) */
#define BITS(n) \
((unsigned)hold & ((1U << (n)) - 1))
/* Remove n bits from the bit accumulator */
#define DROPBITS(n) \
do { \
hold >>= (n); \
bits -= (unsigned)(n); \
} while (0)
/* Remove zero to seven bits as needed to go to a byte boundary */
#define BYTEBITS() \
do { \
hold >>= bits & 7; \
bits -= bits & 7; \
} while (0)
/*
inflate() uses a state machine to process as much input data and generate as
much output data as possible before returning. The state machine is
structured roughly as follows:
for (;;) switch (state) {
...
case STATEn:
if (not enough input data or output space to make progress)
return;
... make progress ...
state = STATEm;
break;
...
}
so when inflate() is called again, the same case is attempted again, and
if the appropriate resources are provided, the machine proceeds to the
next state. The NEEDBITS() macro is usually the way the state evaluates
whether it can proceed or should return. NEEDBITS() does the return if
the requested bits are not available. The typical use of the BITS macros
is:
NEEDBITS(n);
... do something with BITS(n) ...
DROPBITS(n);
where NEEDBITS(n) either returns from inflate() if there isn't enough
input left to load n bits into the accumulator, or it continues. BITS(n)
gives the low n bits in the accumulator. When done, DROPBITS(n) drops
the low n bits off the accumulator. INITBITS() clears the accumulator
and sets the number of available bits to zero. BYTEBITS() discards just
enough bits to put the accumulator on a byte boundary. After BYTEBITS()
and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.
NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return
if there is no input available. The decoding of variable length codes uses
PULLBYTE() directly in order to pull just enough bytes to decode the next
code, and no more.
Some states loop until they get enough input, making sure that enough
state information is maintained to continue the loop where it left off
if NEEDBITS() returns in the loop. For example, want, need, and keep
would all have to actually be part of the saved state in case NEEDBITS()
returns:
case STATEw:
while (want < need) {
NEEDBITS(n);
keep[want++] = BITS(n);
DROPBITS(n);
}
state = STATEx;
case STATEx:
As shown above, if the next state is also the next case, then the break
is omitted.
A state may also return if there is not enough output space available to
complete that state. Those states are copying stored data, writing a
literal byte, and copying a matching string.
When returning, a "goto inf_leave" is used to update the total counters,
update the check value, and determine whether any progress has been made
during that inflate() call in order to return the proper return code.
Progress is defined as a change in either strm->avail_in or strm->avail_out.
When there is a window, goto inf_leave will update the window with the last
output written. If a goto inf_leave occurs in the middle of decompression
and there is no window currently, goto inf_leave will create one and copy
output to the window for the next call of inflate().
In this implementation, the flush parameter of inflate() only affects the
return code (per zlib.h). inflate() always writes as much as possible to
strm->next_out, given the space available and the provided input--the effect
documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers
the allocation of and copying into a sliding window until necessary, which
provides the effect documented in zlib.h for Z_FINISH when the entire input
stream available. So the only thing the flush parameter actually does is:
when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it
will return Z_BUF_ERROR if it has not reached the end of the stream.
*/
int ZEXPORT inflate(strm, flush)
z_streamp strm;
int flush;
{
struct inflate_state FAR *state;
z_const unsigned char FAR *next; /* next input */
unsigned char FAR *put; /* next output */
unsigned have, left; /* available input and output */
unsigned long hold; /* bit buffer */
unsigned bits; /* bits in bit buffer */
unsigned in, out; /* save starting available input and output */
unsigned copy; /* number of stored or match bytes to copy */
unsigned char FAR *from; /* where to copy match bytes from */
code here; /* current decoding table entry */
code last; /* parent table entry */
unsigned len; /* length to copy for repeats, bits to drop */
int ret; /* return code */
#ifdef GUNZIP
unsigned char hbuf[4]; /* buffer for gzip header crc calculation */
#endif
static const unsigned short order[19] = /* permutation of code lengths */
{16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
if (inflateStateCheck(strm) || strm->next_out == Z_NULL ||
(strm->next_in == Z_NULL && strm->avail_in != 0))
return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */
LOAD();
in = have;
out = left;
ret = Z_OK;
for (;;)
switch (state->mode) {
case HEAD:
if (state->wrap == 0) {
state->mode = TYPEDO;
break;
}
NEEDBITS(16);
#ifdef GUNZIP
if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */
if (state->wbits == 0)
state->wbits = 15;
state->check = crc32(0L, Z_NULL, 0);
CRC2(state->check, hold);
INITBITS();
state->mode = FLAGS;
break;
}
state->flags = 0; /* expect zlib header */
if (state->head != Z_NULL)
state->head->done = -1;
if (!(state->wrap & 1) || /* check if zlib header allowed */
#else
if (
#endif
((BITS(8) << 8) + (hold >> 8)) % 31) {
strm->msg = (char *)"incorrect header check";
state->mode = BAD;
break;
}
if (BITS(4) != Z_DEFLATED) {
strm->msg = (char *)"unknown compression method";
state->mode = BAD;
break;
}
DROPBITS(4);
len = BITS(4) + 8;
if (state->wbits == 0)
state->wbits = len;
if (len > 15 || len > state->wbits) {
strm->msg = (char *)"invalid window size";
state->mode = BAD;
break;
}
state->dmax = 1U << len;
Tracev((stderr, "inflate: zlib header ok\n"));
strm->adler = state->check = adler32(0L, Z_NULL, 0);
state->mode = hold & 0x200 ? DICTID : TYPE;
INITBITS();
break;
#ifdef GUNZIP
case FLAGS:
NEEDBITS(16);
state->flags = (int)(hold);
if ((state->flags & 0xff) != Z_DEFLATED) {
strm->msg = (char *)"unknown compression method";
state->mode = BAD;
break;
}
if (state->flags & 0xe000) {
strm->msg = (char *)"unknown header flags set";
state->mode = BAD;
break;
}
if (state->head != Z_NULL)
state->head->text = (int)((hold >> 8) & 1);
if ((state->flags & 0x0200) && (state->wrap & 4))
CRC2(state->check, hold);
INITBITS();
state->mode = TIME;
case TIME:
NEEDBITS(32);
if (state->head != Z_NULL)
state->head->time = hold;
if ((state->flags & 0x0200) && (state->wrap & 4))
CRC4(state->check, hold);
INITBITS();
state->mode = OS;
case OS:
NEEDBITS(16);
if (state->head != Z_NULL) {
state->head->xflags = (int)(hold & 0xff);
state->head->os = (int)(hold >> 8);
}
if ((state->flags & 0x0200) && (state->wrap & 4))
CRC2(state->check, hold);
INITBITS();
state->mode = EXLEN;
case EXLEN:
if (state->flags & 0x0400) {
NEEDBITS(16);
state->length = (unsigned)(hold);
if (state->head != Z_NULL)
state->head->extra_len = (unsigned)hold;
if ((state->flags & 0x0200) && (state->wrap & 4))
CRC2(state->check, hold);
INITBITS();
}
else if (state->head != Z_NULL)
state->head->extra = Z_NULL;
state->mode = EXTRA;
case EXTRA:
if (state->flags & 0x0400) {
copy = state->length;
if (copy > have) copy = have;
if (copy) {
if (state->head != Z_NULL &&
state->head->extra != Z_NULL) {
len = state->head->extra_len - state->length;
zmemcpy(state->head->extra + len, next,
len + copy > state->head->extra_max ?
state->head->extra_max - len : copy);
}
if ((state->flags & 0x0200) && (state->wrap & 4))
state->check = crc32(state->check, next, copy);
have -= copy;
next += copy;
state->length -= copy;
}
if (state->length) goto inf_leave;
}
state->length = 0;
state->mode = NAME;
case NAME:
if (state->flags & 0x0800) {
if (have == 0) goto inf_leave;
copy = 0;
do {
len = (unsigned)(next[copy++]);
if (state->head != Z_NULL &&
state->head->name != Z_NULL &&
state->length < state->head->name_max)
state->head->name[state->length++] = (Bytef)len;
} while (len && copy < have);
if ((state->flags & 0x0200) && (state->wrap & 4))
state->check = crc32(state->check, next, copy);
have -= copy;
next += copy;
if (len) goto inf_leave;
}
else if (state->head != Z_NULL)
state->head->name = Z_NULL;
state->length = 0;
state->mode = COMMENT;
case COMMENT:
if (state->flags & 0x1000) {
if (have == 0) goto inf_leave;
copy = 0;
do {
len = (unsigned)(next[copy++]);
if (state->head != Z_NULL &&
state->head->comment != Z_NULL &&
state->length < state->head->comm_max)
state->head->comment[state->length++] = (Bytef)len;
} while (len && copy < have);
if ((state->flags & 0x0200) && (state->wrap & 4))
state->check = crc32(state->check, next, copy);
have -= copy;
next += copy;
if (len) goto inf_leave;
}
else if (state->head != Z_NULL)
state->head->comment = Z_NULL;
state->mode = HCRC;
case HCRC:
if (state->flags & 0x0200) {
NEEDBITS(16);
if ((state->wrap & 4) && hold != (state->check & 0xffff)) {
strm->msg = (char *)"header crc mismatch";
state->mode = BAD;
break;
}
INITBITS();
}
if (state->head != Z_NULL) {
state->head->hcrc = (int)((state->flags >> 9) & 1);
state->head->done = 1;
}
strm->adler = state->check = crc32(0L, Z_NULL, 0);
state->mode = TYPE;
break;
#endif
case DICTID:
NEEDBITS(32);
strm->adler = state->check = ZSWAP32(hold);
INITBITS();
state->mode = DICT;
case DICT:
if (state->havedict == 0) {
RESTORE();
return Z_NEED_DICT;
}
strm->adler = state->check = adler32(0L, Z_NULL, 0);
state->mode = TYPE;
case TYPE:
if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave;
case TYPEDO:
if (state->last) {
BYTEBITS();
state->mode = CHECK;
break;
}
NEEDBITS(3);
state->last = BITS(1);
DROPBITS(1);
switch (BITS(2)) {
case 0: /* stored block */
Tracev((stderr, "inflate: stored block%s\n",
state->last ? " (last)" : ""));
state->mode = STORED;
break;
case 1: /* fixed block */
fixedtables(state);
Tracev((stderr, "inflate: fixed codes block%s\n",
state->last ? " (last)" : ""));
state->mode = LEN_; /* decode codes */
if (flush == Z_TREES) {
DROPBITS(2);
goto inf_leave;
}
break;
case 2: /* dynamic block */
Tracev((stderr, "inflate: dynamic codes block%s\n",
state->last ? " (last)" : ""));
state->mode = TABLE;
break;
case 3:
strm->msg = (char *)"invalid block type";
state->mode = BAD;
}
DROPBITS(2);
break;
case STORED:
BYTEBITS(); /* go to byte boundary */
NEEDBITS(32);
if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
strm->msg = (char *)"invalid stored block lengths";
state->mode = BAD;
break;
}
state->length = (unsigned)hold & 0xffff;
Tracev((stderr, "inflate: stored length %u\n",
state->length));
INITBITS();
state->mode = COPY_;
if (flush == Z_TREES) goto inf_leave;
case COPY_:
state->mode = COPY;
case COPY:
copy = state->length;
if (copy) {
if (copy > have) copy = have;
if (copy > left) copy = left;
if (copy == 0) goto inf_leave;
zmemcpy(put, next, copy);
have -= copy;
next += copy;
left -= copy;
put += copy;
state->length -= copy;
break;
}
Tracev((stderr, "inflate: stored end\n"));
state->mode = TYPE;
break;
case TABLE:
NEEDBITS(14);
state->nlen = BITS(5) + 257;
DROPBITS(5);
state->ndist = BITS(5) + 1;
DROPBITS(5);
state->ncode = BITS(4) + 4;
DROPBITS(4);
#ifndef PKZIP_BUG_WORKAROUND
if (state->nlen > 286 || state->ndist > 30) {
strm->msg = (char *)"too many length or distance symbols";
state->mode = BAD;
break;
}
#endif
Tracev((stderr, "inflate: table sizes ok\n"));
state->have = 0;
state->mode = LENLENS;
case LENLENS:
while (state->have < state->ncode) {
NEEDBITS(3);
state->lens[order[state->have++]] = (unsigned short)BITS(3);
DROPBITS(3);
}
while (state->have < 19)
state->lens[order[state->have++]] = 0;
state->next = state->codes;
state->lencode = (const code FAR *)(state->next);
state->lenbits = 7;
ret = inflate_table(CODES, state->lens, 19, &(state->next),
&(state->lenbits), state->work);
if (ret) {
strm->msg = (char *)"invalid code lengths set";
state->mode = BAD;
break;
}
Tracev((stderr, "inflate: code lengths ok\n"));
state->have = 0;
state->mode = CODELENS;
case CODELENS:
while (state->have < state->nlen + state->ndist) {
for (;;) {
here = state->lencode[BITS(state->lenbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if (here.val < 16) {
DROPBITS(here.bits);
state->lens[state->have++] = here.val;
}
else {
if (here.val == 16) {
NEEDBITS(here.bits + 2);
DROPBITS(here.bits);
if (state->have == 0) {
strm->msg = (char *)"invalid bit length repeat";
state->mode = BAD;
break;
}
len = state->lens[state->have - 1];
copy = 3 + BITS(2);
DROPBITS(2);
}
else if (here.val == 17) {
NEEDBITS(here.bits + 3);
DROPBITS(here.bits);
len = 0;
copy = 3 + BITS(3);
DROPBITS(3);
}
else {
NEEDBITS(here.bits + 7);
DROPBITS(here.bits);
len = 0;
copy = 11 + BITS(7);
DROPBITS(7);
}
if (state->have + copy > state->nlen + state->ndist) {
strm->msg = (char *)"invalid bit length repeat";
state->mode = BAD;
break;
}
while (copy--)
state->lens[state->have++] = (unsigned short)len;
}
}
/* handle error breaks in while */
if (state->mode == BAD) break;
/* check for end-of-block code (better have one) */
if (state->lens[256] == 0) {
strm->msg = (char *)"invalid code -- missing end-of-block";
state->mode = BAD;
break;
}
/* build code tables -- note: do not change the lenbits or distbits
values here (9 and 6) without reading the comments in inftrees.h
concerning the ENOUGH constants, which depend on those values */
state->next = state->codes;
state->lencode = (const code FAR *)(state->next);
state->lenbits = 9;
ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
&(state->lenbits), state->work);
if (ret) {
strm->msg = (char *)"invalid literal/lengths set";
state->mode = BAD;
break;
}
state->distcode = (const code FAR *)(state->next);
state->distbits = 6;
ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
&(state->next), &(state->distbits), state->work);
if (ret) {
strm->msg = (char *)"invalid distances set";
state->mode = BAD;
break;
}
Tracev((stderr, "inflate: codes ok\n"));
state->mode = LEN_;
if (flush == Z_TREES) goto inf_leave;
case LEN_:
state->mode = LEN;
case LEN:
if (have >= 6 && left >= 258) {
RESTORE();
inflate_fast(strm, out);
LOAD();
if (state->mode == TYPE)
state->back = -1;
break;
}
state->back = 0;
for (;;) {
here = state->lencode[BITS(state->lenbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if (here.op && (here.op & 0xf0) == 0) {
last = here;
for (;;) {
here = state->lencode[last.val +
(BITS(last.bits + last.op) >> last.bits)];
if ((unsigned)(last.bits + here.bits) <= bits) break;
PULLBYTE();
}
DROPBITS(last.bits);
state->back += last.bits;
}
DROPBITS(here.bits);
state->back += here.bits;
state->length = (unsigned)here.val;
if ((int)(here.op) == 0) {
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
"inflate: literal '%c'\n" :
"inflate: literal 0x%02x\n", here.val));
state->mode = LIT;
break;
}
if (here.op & 32) {
Tracevv((stderr, "inflate: end of block\n"));
state->back = -1;
state->mode = TYPE;
break;
}
if (here.op & 64) {
strm->msg = (char *)"invalid literal/length code";
state->mode = BAD;
break;
}
state->extra = (unsigned)(here.op) & 15;
state->mode = LENEXT;
case LENEXT:
if (state->extra) {
NEEDBITS(state->extra);
state->length += BITS(state->extra);
DROPBITS(state->extra);
state->back += state->extra;
}
Tracevv((stderr, "inflate: length %u\n", state->length));
state->was = state->length;
state->mode = DIST;
case DIST:
for (;;) {
here = state->distcode[BITS(state->distbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if ((here.op & 0xf0) == 0) {
last = here;
for (;;) {
here = state->distcode[last.val +
(BITS(last.bits + last.op) >> last.bits)];
if ((unsigned)(last.bits + here.bits) <= bits) break;
PULLBYTE();
}
DROPBITS(last.bits);
state->back += last.bits;
}
DROPBITS(here.bits);
state->back += here.bits;
if (here.op & 64) {
strm->msg = (char *)"invalid distance code";
state->mode = BAD;
break;
}
state->offset = (unsigned)here.val;
state->extra = (unsigned)(here.op) & 15;
state->mode = DISTEXT;
case DISTEXT:
if (state->extra) {
NEEDBITS(state->extra);
state->offset += BITS(state->extra);
DROPBITS(state->extra);
state->back += state->extra;
}
#ifdef INFLATE_STRICT
if (state->offset > state->dmax) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
break;
}
#endif
Tracevv((stderr, "inflate: distance %u\n", state->offset));
state->mode = MATCH;
case MATCH:
if (left == 0) goto inf_leave;
copy = out - left;
if (state->offset > copy) { /* copy from window */
copy = state->offset - copy;
if (copy > state->whave) {
if (state->sane) {
strm->msg = (char *)"invalid distance too far back";
state->mode = BAD;
break;
}
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
Trace((stderr, "inflate.c too far\n"));
copy -= state->whave;
if (copy > state->length) copy = state->length;
if (copy > left) copy = left;
left -= copy;
state->length -= copy;
do {
*put++ = 0;
} while (--copy);
if (state->length == 0) state->mode = LEN;
break;
#endif
}
if (copy > state->wnext) {
copy -= state->wnext;
from = state->window + (state->wsize - copy);
}
else
from = state->window + (state->wnext - copy);
if (copy > state->length) copy = state->length;
}
else { /* copy from output */
from = put - state->offset;
copy = state->length;
}
if (copy > left) copy = left;
left -= copy;
state->length -= copy;
do {
*put++ = *from++;
} while (--copy);
if (state->length == 0) state->mode = LEN;
break;
case LIT:
if (left == 0) goto inf_leave;
*put++ = (unsigned char)(state->length);
left--;
state->mode = LEN;
break;
case CHECK:
if (state->wrap) {
NEEDBITS(32);
out -= left;
strm->total_out += out;
state->total += out;
if ((state->wrap & 4) && out)
strm->adler = state->check =
UPDATE(state->check, put - out, out);
out = left;
if ((state->wrap & 4) && (
#ifdef GUNZIP
state->flags ? hold :
#endif
ZSWAP32(hold)) != state->check) {
strm->msg = (char *)"incorrect data check";
state->mode = BAD;
break;
}
INITBITS();
Tracev((stderr, "inflate: check matches trailer\n"));
}
#ifdef GUNZIP
state->mode = LENGTH;
case LENGTH:
if (state->wrap && state->flags) {
NEEDBITS(32);
if (hold != (state->total & 0xffffffffUL)) {
strm->msg = (char *)"incorrect length check";
state->mode = BAD;
break;
}
INITBITS();
Tracev((stderr, "inflate: length matches trailer\n"));
}
#endif
state->mode = DONE;
case DONE:
ret = Z_STREAM_END;
goto inf_leave;
case BAD:
ret = Z_DATA_ERROR;
goto inf_leave;
case MEM:
return Z_MEM_ERROR;
case SYNC:
default:
return Z_STREAM_ERROR;
}
/*
Return from inflate(), updating the total counts and the check value.
If there was no progress during the inflate() call, return a buffer
error. Call updatewindow() to create and/or update the window state.
Note: a memory error from inflate() is non-recoverable.
*/
inf_leave:
RESTORE();
if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
(state->mode < CHECK || flush != Z_FINISH)))
if (updatewindow(strm, strm->next_out, out - strm->avail_out)) {
state->mode = MEM;
return Z_MEM_ERROR;
}
in -= strm->avail_in;
out -= strm->avail_out;
strm->total_in += in;
strm->total_out += out;
state->total += out;
if ((state->wrap & 4) && out)
strm->adler = state->check =
UPDATE(state->check, strm->next_out - out, out);
strm->data_type = (int)state->bits + (state->last ? 64 : 0) +
(state->mode == TYPE ? 128 : 0) +
(state->mode == LEN_ || state->mode == COPY_ ? 256 : 0);
if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)
ret = Z_BUF_ERROR;
return ret;
}
int ZEXPORT inflateEnd(strm)
z_streamp strm;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm))
return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if (state->window != Z_NULL) ZFREE(strm, state->window);
ZFREE(strm, strm->state);
strm->state = Z_NULL;
Tracev((stderr, "inflate: end\n"));
return Z_OK;
}
int ZEXPORT inflateGetDictionary(strm, dictionary, dictLength)
z_streamp strm;
Bytef *dictionary;
uInt *dictLength;
{
struct inflate_state FAR *state;
/* check state */
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
/* copy dictionary */
if (state->whave && dictionary != Z_NULL) {
zmemcpy(dictionary, state->window + state->wnext,
state->whave - state->wnext);
zmemcpy(dictionary + state->whave - state->wnext,
state->window, state->wnext);
}
if (dictLength != Z_NULL)
*dictLength = state->whave;
return Z_OK;
}
int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)
z_streamp strm;
const Bytef *dictionary;
uInt dictLength;
{
struct inflate_state FAR *state;
unsigned long dictid;
int ret;
/* check state */
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if (state->wrap != 0 && state->mode != DICT)
return Z_STREAM_ERROR;
/* check for correct dictionary identifier */
if (state->mode == DICT) {
dictid = adler32(0L, Z_NULL, 0);
dictid = adler32(dictid, dictionary, dictLength);
if (dictid != state->check)
return Z_DATA_ERROR;
}
/* copy dictionary to window using updatewindow(), which will amend the
existing dictionary if appropriate */
ret = updatewindow(strm, dictionary + dictLength, dictLength);
if (ret) {
state->mode = MEM;
return Z_MEM_ERROR;
}
state->havedict = 1;
Tracev((stderr, "inflate: dictionary set\n"));
return Z_OK;
}
int ZEXPORT inflateGetHeader(strm, head)
z_streamp strm;
gz_headerp head;
{
struct inflate_state FAR *state;
/* check state */
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if ((state->wrap & 2) == 0) return Z_STREAM_ERROR;
/* save header structure */
state->head = head;
head->done = 0;
return Z_OK;
}
/*
Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found
or when out of input. When called, *have is the number of pattern bytes
found in order so far, in 0..3. On return *have is updated to the new
state. If on return *have equals four, then the pattern was found and the
return value is how many bytes were read including the last byte of the
pattern. If *have is less than four, then the pattern has not been found
yet and the return value is len. In the latter case, syncsearch() can be
called again with more data and the *have state. *have is initialized to
zero for the first call.
*/
local unsigned syncsearch(have, buf, len)
unsigned FAR *have;
const unsigned char FAR *buf;
unsigned len;
{
unsigned got;
unsigned next;
got = *have;
next = 0;
while (next < len && got < 4) {
if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))
got++;
else if (buf[next])
got = 0;
else
got = 4 - got;
next++;
}
*have = got;
return next;
}
int ZEXPORT inflateSync(strm)
z_streamp strm;
{
unsigned len; /* number of bytes to look at or looked at */
unsigned long in, out; /* temporary to save total_in and total_out */
unsigned char buf[4]; /* to restore bit buffer to byte string */
struct inflate_state FAR *state;
/* check parameters */
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;
/* if first time, start search in bit buffer */
if (state->mode != SYNC) {
state->mode = SYNC;
state->hold <<= state->bits & 7;
state->bits -= state->bits & 7;
len = 0;
while (state->bits >= 8) {
buf[len++] = (unsigned char)(state->hold);
state->hold >>= 8;
state->bits -= 8;
}
state->have = 0;
syncsearch(&(state->have), buf, len);
}
/* search available input */
len = syncsearch(&(state->have), strm->next_in, strm->avail_in);
strm->avail_in -= len;
strm->next_in += len;
strm->total_in += len;
/* return no joy or set up to restart inflate() on a new block */
if (state->have != 4) return Z_DATA_ERROR;
in = strm->total_in; out = strm->total_out;
inflateReset(strm);
strm->total_in = in; strm->total_out = out;
state->mode = TYPE;
return Z_OK;
}
/*
Returns true if inflate is currently at the end of a block generated by
Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
implementation to provide an additional safety check. PPP uses
Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored
block. When decompressing, PPP checks that at the end of input packet,
inflate is waiting for these length bytes.
*/
int ZEXPORT inflateSyncPoint(strm)
z_streamp strm;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
return state->mode == STORED && state->bits == 0;
}
int ZEXPORT inflateCopy(dest, source)
z_streamp dest;
z_streamp source;
{
struct inflate_state FAR *state;
struct inflate_state FAR *copy;
unsigned char FAR *window;
unsigned wsize;
/* check input */
if (inflateStateCheck(source) || dest == Z_NULL)
return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)source->state;
/* allocate space */
copy = (struct inflate_state FAR *)
ZALLOC(source, 1, sizeof(struct inflate_state));
if (copy == Z_NULL) return Z_MEM_ERROR;
window = Z_NULL;
if (state->window != Z_NULL) {
window = (unsigned char FAR *)
ZALLOC(source, 1U << state->wbits, sizeof(unsigned char));
if (window == Z_NULL) {
ZFREE(source, copy);
return Z_MEM_ERROR;
}
}
/* copy state */
zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state));
copy->strm = dest;
if (state->lencode >= state->codes &&
state->lencode <= state->codes + ENOUGH - 1) {
copy->lencode = copy->codes + (state->lencode - state->codes);
copy->distcode = copy->codes + (state->distcode - state->codes);
}
copy->next = copy->codes + (state->next - state->codes);
if (window != Z_NULL) {
wsize = 1U << state->wbits;
zmemcpy(window, state->window, wsize);
}
copy->window = window;
dest->state = (struct internal_state FAR *)copy;
return Z_OK;
}
int ZEXPORT inflateUndermine(strm, subvert)
z_streamp strm;
int subvert;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
state->sane = !subvert;
return Z_OK;
#else
(void)subvert;
state->sane = 1;
return Z_DATA_ERROR;
#endif
}
int ZEXPORT inflateValidate(strm, check)
z_streamp strm;
int check;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
if (check)
state->wrap |= 4;
else
state->wrap &= ~4;
return Z_OK;
}
long ZEXPORT inflateMark(strm)
z_streamp strm;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm))
return -(1L << 16);
state = (struct inflate_state FAR *)strm->state;
return (long)(((unsigned long)((long)state->back)) << 16) +
(state->mode == COPY ? state->length :
(state->mode == MATCH ? state->was - state->length : 0));
}
unsigned long ZEXPORT inflateCodesUsed(strm)
z_streamp strm;
{
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return (unsigned long)-1;
state = (struct inflate_state FAR *)strm->state;
return (unsigned long)(state->next - state->codes);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/zlib/deflate.h
|
/* deflate.h -- internal compression state
* Copyright (C) 1995-2016 Jean-loup Gailly
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* @(#) $Id$ */
#ifndef DEFLATE_H
#define DEFLATE_H
#include "zutil.h"
/* define NO_GZIP when compiling if you want to disable gzip header and
trailer creation by deflate(). NO_GZIP would be used to avoid linking in
the crc code when it is not needed. For shared libraries, gzip encoding
should be left enabled. */
#ifndef NO_GZIP
# define GZIP
#endif
/* ===========================================================================
* Internal compression state.
*/
#define LENGTH_CODES 29
/* number of length codes, not counting the special END_BLOCK code */
#define LITERALS 256
/* number of literal bytes 0..255 */
#define L_CODES (LITERALS+1+LENGTH_CODES)
/* number of Literal or Length codes, including the END_BLOCK code */
#define D_CODES 30
/* number of distance codes */
#define BL_CODES 19
/* number of codes used to transfer the bit lengths */
#define HEAP_SIZE (2*L_CODES+1)
/* maximum heap size */
#define MAX_BITS 15
/* All codes must not exceed MAX_BITS bits */
#define Buf_size 16
/* size of bit buffer in bi_buf */
#define INIT_STATE 42 /* zlib header -> BUSY_STATE */
#ifdef GZIP
# define GZIP_STATE 57 /* gzip header -> BUSY_STATE | EXTRA_STATE */
#endif
#define EXTRA_STATE 69 /* gzip extra block -> NAME_STATE */
#define NAME_STATE 73 /* gzip file name -> COMMENT_STATE */
#define COMMENT_STATE 91 /* gzip comment -> HCRC_STATE */
#define HCRC_STATE 103 /* gzip header CRC -> BUSY_STATE */
#define BUSY_STATE 113 /* deflate -> FINISH_STATE */
#define FINISH_STATE 666 /* stream complete */
/* Stream status */
/* Data structure describing a single value and its code string. */
typedef struct ct_data_s {
union {
ush freq; /* frequency count */
ush code; /* bit string */
} fc;
union {
ush dad; /* father node in Huffman tree */
ush len; /* length of bit string */
} dl;
} FAR ct_data;
#define Freq fc.freq
#define Code fc.code
#define Dad dl.dad
#define Len dl.len
typedef struct static_tree_desc_s static_tree_desc;
typedef struct tree_desc_s {
ct_data *dyn_tree; /* the dynamic tree */
int max_code; /* largest code with non zero frequency */
const static_tree_desc *stat_desc; /* the corresponding static tree */
} FAR tree_desc;
typedef ush Pos;
typedef Pos FAR Posf;
typedef unsigned IPos;
/* A Pos is an index in the character window. We use short instead of int to
* save space in the various tables. IPos is used only for parameter passing.
*/
typedef struct internal_state {
z_streamp strm; /* pointer back to this zlib stream */
int status; /* as the name implies */
Bytef *pending_buf; /* output still pending */
ulg pending_buf_size; /* size of pending_buf */
Bytef *pending_out; /* next pending byte to output to the stream */
ulg pending; /* nb of bytes in the pending buffer */
int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
gz_headerp gzhead; /* gzip header information to write */
ulg gzindex; /* where in extra, name, or comment */
Byte method; /* can only be DEFLATED */
int last_flush; /* value of flush param for previous deflate call */
/* used by deflate.c: */
uInt w_size; /* LZ77 window size (32K by default) */
uInt w_bits; /* log2(w_size) (8..16) */
uInt w_mask; /* w_size - 1 */
Bytef *window;
/* Sliding window. Input bytes are read into the second half of the window,
* and move to the first half later to keep a dictionary of at least wSize
* bytes. With this organization, matches are limited to a distance of
* wSize-MAX_MATCH bytes, but this ensures that IO is always
* performed with a length multiple of the block size. Also, it limits
* the window size to 64K, which is quite useful on MSDOS.
* To do: use the user input buffer as sliding window.
*/
ulg window_size;
/* Actual size of window: 2*wSize, except when the user input buffer
* is directly used as sliding window.
*/
Posf *prev;
/* Link to older string with same hash index. To limit the size of this
* array to 64K, this link is maintained only for the last 32K strings.
* An index in this array is thus a window index modulo 32K.
*/
Posf *head; /* Heads of the hash chains or NIL. */
uInt ins_h; /* hash index of string to be inserted */
uInt hash_size; /* number of elements in hash table */
uInt hash_bits; /* log2(hash_size) */
uInt hash_mask; /* hash_size-1 */
uInt hash_shift;
/* Number of bits by which ins_h must be shifted at each input
* step. It must be such that after MIN_MATCH steps, the oldest
* byte no longer takes part in the hash key, that is:
* hash_shift * MIN_MATCH >= hash_bits
*/
long block_start;
/* Window position at the beginning of the current output block. Gets
* negative when the window is moved backwards.
*/
uInt match_length; /* length of best match */
IPos prev_match; /* previous match */
int match_available; /* set if previous match exists */
uInt strstart; /* start of string to insert */
uInt match_start; /* start of matching string */
uInt lookahead; /* number of valid bytes ahead in window */
uInt prev_length;
/* Length of the best match at previous step. Matches not greater than this
* are discarded. This is used in the lazy match evaluation.
*/
uInt max_chain_length;
/* To speed up deflation, hash chains are never searched beyond this
* length. A higher limit improves compression ratio but degrades the
* speed.
*/
uInt max_lazy_match;
/* Attempt to find a better match only when the current match is strictly
* smaller than this value. This mechanism is used only for compression
* levels >= 4.
*/
# define max_insert_length max_lazy_match
/* Insert new strings in the hash table only if the match length is not
* greater than this length. This saves time but degrades compression.
* max_insert_length is used only for compression levels <= 3.
*/
int level; /* compression level (1..9) */
int strategy; /* favor or force Huffman coding*/
uInt good_match;
/* Use a faster search when the previous match is longer than this */
int nice_match; /* Stop searching when current match exceeds this */
/* used by trees.c: */
/* Didn't use ct_data typedef below to suppress compiler warning */
struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */
struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */
struct tree_desc_s l_desc; /* desc. for literal tree */
struct tree_desc_s d_desc; /* desc. for distance tree */
struct tree_desc_s bl_desc; /* desc. for bit length tree */
ush bl_count[MAX_BITS+1];
/* number of codes at each bit length for an optimal tree */
int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */
int heap_len; /* number of elements in the heap */
int heap_max; /* element of largest frequency */
/* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
* The same heap array is used to build all trees.
*/
uch depth[2*L_CODES+1];
/* Depth of each subtree used as tie breaker for trees of equal frequency
*/
uchf *l_buf; /* buffer for literals or lengths */
uInt lit_bufsize;
/* Size of match buffer for literals/lengths. There are 4 reasons for
* limiting lit_bufsize to 64K:
* - frequencies can be kept in 16 bit counters
* - if compression is not successful for the first block, all input
* data is still in the window so we can still emit a stored block even
* when input comes from standard input. (This can also be done for
* all blocks if lit_bufsize is not greater than 32K.)
* - if compression is not successful for a file smaller than 64K, we can
* even emit a stored file instead of a stored block (saving 5 bytes).
* This is applicable only for zip (not gzip or zlib).
* - creating new Huffman trees less frequently may not provide fast
* adaptation to changes in the input data statistics. (Take for
* example a binary file with poorly compressible code followed by
* a highly compressible string table.) Smaller buffer sizes give
* fast adaptation but have of course the overhead of transmitting
* trees more frequently.
* - I can't count above 4
*/
uInt last_lit; /* running index in l_buf */
ushf *d_buf;
/* Buffer for distances. To simplify the code, d_buf and l_buf have
* the same number of elements. To use different lengths, an extra flag
* array would be necessary.
*/
ulg opt_len; /* bit length of current block with optimal trees */
ulg static_len; /* bit length of current block with static trees */
uInt matches; /* number of string matches in current block */
uInt insert; /* bytes at end of window left to insert */
#ifdef ZLIB_DEBUG
ulg compressed_len; /* total bit length of compressed file mod 2^32 */
ulg bits_sent; /* bit length of compressed data sent mod 2^32 */
#endif
ush bi_buf;
/* Output buffer. bits are inserted starting at the bottom (least
* significant bits).
*/
int bi_valid;
/* Number of valid bits in bi_buf. All bits above the last valid bit
* are always zero.
*/
ulg high_water;
/* High water mark offset in window for initialized bytes -- bytes above
* this are set to zero in order to avoid memory check warnings when
* longest match routines access bytes past the input. This is then
* updated to the new high water mark.
*/
} FAR deflate_state;
/* Output a byte on the stream.
* IN assertion: there is enough room in pending_buf.
*/
#define put_byte(s, c) {s->pending_buf[s->pending++] = (Bytef)(c);}
#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
/* Minimum amount of lookahead, except at the end of the input file.
* See deflate.c for comments about the MIN_MATCH+1.
*/
#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD)
/* In order to simplify the code, particularly on 16 bit machines, match
* distances are limited to MAX_DIST instead of WSIZE.
*/
#define WIN_INIT MAX_MATCH
/* Number of bytes after end of data in window to initialize in order to avoid
memory checker errors from longest match routines */
/* in trees.c */
void ZLIB_INTERNAL _tr_init OF((deflate_state *s));
int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,
ulg stored_len, int last));
void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s));
void ZLIB_INTERNAL _tr_align OF((deflate_state *s));
void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
ulg stored_len, int last));
#define d_code(dist) \
((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
/* Mapping from a distance to a distance code. dist is the distance - 1 and
* must not have side effects. _dist_code[256] and _dist_code[257] are never
* used.
*/
#ifndef ZLIB_DEBUG
/* Inline versions of _tr_tally for speed: */
#if defined(GEN_TREES_H) || !defined(STDC)
extern uch ZLIB_INTERNAL _length_code[];
extern uch ZLIB_INTERNAL _dist_code[];
#else
extern const uch ZLIB_INTERNAL _length_code[];
extern const uch ZLIB_INTERNAL _dist_code[];
#endif
# define _tr_tally_lit(s, c, flush) \
{ uch cc = (c); \
s->d_buf[s->last_lit] = 0; \
s->l_buf[s->last_lit++] = cc; \
s->dyn_ltree[cc].Freq++; \
flush = (s->last_lit == s->lit_bufsize-1); \
}
# define _tr_tally_dist(s, distance, length, flush) \
{ uch len = (uch)(length); \
ush dist = (ush)(distance); \
s->d_buf[s->last_lit] = dist; \
s->l_buf[s->last_lit++] = len; \
dist--; \
s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
s->dyn_dtree[d_code(dist)].Freq++; \
flush = (s->last_lit == s->lit_bufsize-1); \
}
#else
# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
# define _tr_tally_dist(s, distance, length, flush) \
flush = _tr_tally(s, distance, length)
#endif
#endif /* DEFLATE_H */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/util.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_UTIL_H__
#define PRIVATE_UTIL_H__
extern void ntlm_memzero(void *data, size_t size);
extern uint64_t ntlm_htonll(uint64_t value);
#endif /* PRIVATE_UTIL_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/compat.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_COMPAT_H__
#define PRIVATE_COMPAT_H__
#if defined (_MSC_VER)
typedef unsigned char bool;
# ifndef true
# define true 1
# endif
# ifndef false
# define false 0
# endif
#else
# include <stdbool.h>
#endif
#ifndef MIN
# define MIN(x, y) (((x) < (y)) ? (x) : (y))
#endif
#endif /* PRIVATE_COMPAT_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/ntlm.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_NTLM_H__
#define PRIVATE_NTLM_H__
#include "ntlmclient.h"
#include "unicode.h"
#include "crypt.h"
#include "compat.h"
#define NTLM_UNUSED(x) ((void)(x))
#define NTLM_LM_RESPONSE_LEN 24
#define NTLM_NTLM_RESPONSE_LEN 24
#define NTLM_NTLM_HASH_LEN 16
#define NTLM_NTLM2_HASH_LEN 16
#define NTLM_SIGNATURE { 'N', 'T', 'L', 'M', 'S', 'S', 'P', 0x00 }
#define NTLM_LM_PLAINTEXT { 0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 }
typedef enum {
NTLM_STATE_NEGOTIATE = 0,
NTLM_STATE_CHALLENGE = 1,
NTLM_STATE_RESPONSE = 2,
NTLM_STATE_ERROR = 3,
NTLM_STATE_COMPLETE = 4,
} ntlm_state;
typedef struct {
unsigned char *buf;
size_t pos;
size_t len;
} ntlm_buf;
typedef struct {
uint8_t major;
uint8_t minor;
uint16_t build;
uint32_t reserved;
} ntlm_version;
typedef struct {
uint32_t flags;
uint64_t nonce;
ntlm_version target_version;
/* The unparsed target information from the server */
unsigned char *target_info;
size_t target_info_len;
/* The target information parsed into usable strings */
char *target;
char *target_server;
char *target_domain;
char *target_server_dns;
char *target_domain_dns;
} ntlm_challenge;
struct ntlm_client {
ntlm_client_flags flags;
ntlm_state state;
/* subsystem contexts */
ntlm_crypt_ctx crypt_ctx;
ntlm_unicode_ctx unicode_ctx;
int crypt_initialized : 1,
unicode_initialized : 1;
/* error message as set by the library */
const char *errmsg;
char *hostname;
char *hostdomain;
ntlm_version host_version;
char *target;
char *username;
char *username_upper;
char *userdomain;
char *password;
/* strings as converted to utf16 */
char *hostname_utf16;
char *target_utf16;
char *username_utf16;
char *username_upper_utf16;
char *userdomain_utf16;
char *password_utf16;
size_t hostname_utf16_len;
size_t username_utf16_len;
size_t username_upper_utf16_len;
size_t userdomain_utf16_len;
size_t password_utf16_len;
size_t target_utf16_len;
/* timestamp and nonce; only for debugging */
uint64_t nonce;
uint64_t timestamp;
unsigned char lm_response[NTLM_LM_RESPONSE_LEN];
size_t lm_response_len;
unsigned char ntlm_response[NTLM_NTLM_RESPONSE_LEN];
size_t ntlm_response_len;
unsigned char *ntlm2_response;
size_t ntlm2_response_len;
ntlm_buf negotiate;
ntlm_challenge challenge;
ntlm_buf response;
};
typedef enum {
NTLM_ENABLE_HOSTVERSION = (1 << 31),
} ntlm_client_internal_flags;
typedef enum {
NTLM_TARGET_INFO_END = 0,
NTLM_TARGET_INFO_SERVER = 1,
NTLM_TARGET_INFO_DOMAIN = 2,
NTLM_TARGET_INFO_SERVER_DNS = 3,
NTLM_TARGET_INFO_DOMAIN_DNS = 4,
} ntlm_target_info_type_t;
typedef enum {
/* Unicode strings are supported in security buffers */
NTLM_NEGOTIATE_UNICODE = 0x00000001,
/* OEM (ANSI) strings are supported in security buffers */
NTLM_NEGOTIATE_OEM = 0x00000002,
/* Request the target realm from the server */
NTLM_NEGOTIATE_REQUEST_TARGET = 0x00000004,
/* NTLM authentication is supported */
NTLM_NEGOTIATE_NTLM = 0x00000200,
/* Negotiate domain name */
NTLM_NEGOTIATE_DOMAIN_SUPPLIED = 0x00001000,
/* Negotiate workstation (client) name */
NTLM_NEGOTIATE_WORKSTATION_SUPPLIED = 0x00002000,
/* Indicates that a local context is available */
NTLM_NEGOTIATE_LOCAL_CALL = 0x00004000,
/* Request a dummy signature */
NTLM_NEGOTIATE_ALWAYS_SIGN = 0x00008000,
/* Target (server) is a domain */
NTLM_NEGOTIATE_TYPE_DOMAIN = 0x00010000,
/* NTLM2 signing and sealing is supported */
NTLM_NEGOTIATE_NTLM2_SIGN_AND_SEAL = 0x00080000,
/* A target information block is included */
NTLM_NEGOTIATE_TARGET_INFO = 0x00800000,
/* Version information should be provided */
NTLM_NEGOTIATE_VERSION = 0x01000000,
} ntlm_negotiate_t;
extern int ntlm_client_set_nonce(ntlm_client *ntlm, uint64_t nonce);
extern int ntlm_client_set_timestamp(ntlm_client *ntlm, uint64_t timestamp);
extern void ntlm_client_set_errmsg(ntlm_client *ntlm, const char *errmsg);
#endif /* PRIVATE_NTLM_H__ */
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0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/crypt_mbedtls.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_CRYPT_MBEDTLS_H__
#define PRIVATE_CRYPT_MBEDTLS_H__
#include "mbedtls/md.h"
struct ntlm_crypt_ctx {
mbedtls_md_context_t hmac;
unsigned int hmac_initialized : 1;
};
#endif /* PRIVATE_CRYPT_MBEDTLS_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/crypt_openssl.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_CRYPT_OPENSSL_H__
#define PRIVATE_CRYPT_OPENSSL_H__
#ifndef CRYPT_OPENSSL_DYNAMIC
# include <openssl/des.h>
# include <openssl/hmac.h>
#endif
/* OpenSSL 1.1.0 uses opaque structs, we'll reuse these. */
#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L
# define HMAC_CTX struct hmac_ctx_st
#endif
#ifdef CRYPT_OPENSSL_DYNAMIC
typedef unsigned char DES_cblock[8];
typedef unsigned char const_DES_cblock[8];
typedef unsigned long DES_LONG;
typedef struct DES_ks {
union {
DES_cblock cblock;
DES_LONG deslong[2];
} ks[16];
} DES_key_schedule;
#define DES_ENCRYPT 1
typedef void EVP_MD;
typedef void ENGINE;
typedef void EVP_PKEY_CTX;
#define HMAC_MAX_MD_CBLOCK 128
typedef struct env_md_ctx_st EVP_MD_CTX;
struct env_md_ctx_st {
const EVP_MD *digest;
ENGINE *engine;
unsigned long flags;
void *md_data;
EVP_PKEY_CTX *pctx;
int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
};
typedef struct hmac_ctx_st {
const EVP_MD *md;
EVP_MD_CTX md_ctx;
EVP_MD_CTX i_ctx;
EVP_MD_CTX o_ctx;
unsigned int key_length;
unsigned char key[HMAC_MAX_MD_CBLOCK];
} HMAC_CTX;
#endif
struct ntlm_crypt_ctx {
HMAC_CTX *hmac;
void *openssl_handle;
void (*des_ecb_encrypt_fn)(const_DES_cblock *input, DES_cblock *output, DES_key_schedule *ks, int enc);
int (*des_set_key_fn)(const_DES_cblock *key, DES_key_schedule *schedule);
unsigned long (*err_get_error_fn)(void);
const char *(*err_lib_error_string_fn)(unsigned long e);
const EVP_MD *(*evp_md5_fn)(void);
HMAC_CTX *(*hmac_ctx_new_fn)(void);
int (*hmac_ctx_reset_fn)(HMAC_CTX *ctx);
void (*hmac_ctx_free_fn)(HMAC_CTX *ctx);
void (*hmac_ctx_cleanup_fn)(HMAC_CTX *ctx);
int (*hmac_init_ex_fn)(HMAC_CTX *ctx, const void *key, int key_len, const EVP_MD *md, ENGINE *impl);
int (*hmac_update_fn)(HMAC_CTX *ctx, const unsigned char *data, size_t len);
int (*hmac_final_fn)(HMAC_CTX *ctx, unsigned char *md, unsigned int *len);
unsigned char *(*md4_fn)(const unsigned char *d, size_t n, unsigned char *md);
int (*rand_bytes_fn)(unsigned char *buf, int num);
};
#endif /* PRIVATE_CRYPT_OPENSSL_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/unicode.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_UNICODE_H__
#define PRIVATE_UNICODE_H__
#include "compat.h"
#ifdef UNICODE_ICONV
# include "unicode_iconv.h"
#elif UNICODE_BUILTIN
# include "unicode_builtin.h"
#endif
#define NTLM_UNICODE_MAX_LEN 2048
typedef struct ntlm_unicode_ctx ntlm_unicode_ctx;
extern bool ntlm_unicode_init(ntlm_client *ntlm);
bool ntlm_unicode_utf8_to_16(
char **converted,
size_t *converted_len,
ntlm_client *ntlm,
const char *string,
size_t string_len);
bool ntlm_unicode_utf16_to_8(
char **converted,
size_t *converted_len,
ntlm_client *ntlm,
const char *string,
size_t string_len);
extern void ntlm_unicode_shutdown(ntlm_client *ntlm);
#endif /* PRIVATE_UNICODE_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/unicode_builtin.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_UNICODE_BUILTIN_H__
#define PRIVATE_UNICODE_BUILTIN_H__
#include <locale.h>
#include <iconv.h>
#include "ntlmclient.h"
struct ntlm_unicode_ctx {
};
#endif /* PRIVATE_UNICODE_BUILTIN_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/unicode_iconv.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_UNICODE_ICONV_H__
#define PRIVATE_UNICODE_ICONV_H__
#include <locale.h>
#include <iconv.h>
#include "ntlmclient.h"
struct ntlm_unicode_ctx {
iconv_t utf8_to_16;
iconv_t utf16_to_8;
};
#endif /* PRIVATE_UNICODE_ICONV_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/crypt.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_CRYPT_COMMON_H__
#define PRIVATE_CRYPT_COMMON_H__
#include "ntlmclient.h"
#include "ntlm.h"
#if defined(CRYPT_OPENSSL)
# include "crypt_openssl.h"
#elif defined(CRYPT_MBEDTLS)
# include "crypt_mbedtls.h"
#elif defined(CRYPT_COMMONCRYPTO)
# include "crypt_commoncrypto.h"
#else
# error "no crypto support"
#endif
#define CRYPT_DES_BLOCKSIZE 8
#define CRYPT_MD4_DIGESTSIZE 16
#define CRYPT_MD5_DIGESTSIZE 16
typedef unsigned char ntlm_des_block[CRYPT_DES_BLOCKSIZE];
typedef struct ntlm_crypt_ctx ntlm_crypt_ctx;
extern bool ntlm_crypt_init(ntlm_client *ntlm);
extern bool ntlm_random_bytes(
unsigned char *out,
ntlm_client *ntlm,
size_t len);
extern bool ntlm_des_encrypt(
ntlm_des_block *out,
ntlm_client *ntlm,
ntlm_des_block *plaintext,
ntlm_des_block *key);
extern bool ntlm_md4_digest(
unsigned char out[CRYPT_MD4_DIGESTSIZE],
ntlm_client *ntlm,
const unsigned char *in,
size_t in_len);
extern bool ntlm_hmac_md5_init(
ntlm_client *ntlm,
const unsigned char *key,
size_t key_len);
extern bool ntlm_hmac_md5_update(
ntlm_client *ntlm,
const unsigned char *data,
size_t data_len);
extern bool ntlm_hmac_md5_final(
unsigned char *out,
size_t *out_len,
ntlm_client *ntlm);
extern void ntlm_crypt_shutdown(ntlm_client *ntlm);
#endif /* PRIVATE_CRYPT_COMMON_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/CMakeLists.txt
|
FILE(GLOB SRC_NTLMCLIENT "ntlm.c" "ntlm.h" "util.c" "util.h")
LIST(SORT SRC_NTLMCLIENT)
ADD_DEFINITIONS(-DNTLM_STATIC=1)
DISABLE_WARNINGS(implicit-fallthrough)
IF(USE_ICONV)
ADD_DEFINITIONS(-DUNICODE_ICONV=1)
FILE(GLOB SRC_NTLMCLIENT_UNICODE "unicode_iconv.c" "unicode_iconv.h")
ELSE()
ADD_DEFINITIONS(-DUNICODE_BUILTIN=1)
FILE(GLOB SRC_NTLMCLIENT_UNICODE "unicode_builtin.c" "unicode_builtin.h")
ENDIF()
IF(USE_HTTPS STREQUAL "SecureTransport")
ADD_DEFINITIONS(-DCRYPT_COMMONCRYPTO)
SET(SRC_NTLMCLIENT_CRYPTO "crypt_commoncrypto.c" "crypt_commoncrypto.h")
# CC_MD4 has been deprecated in macOS 10.15.
SET_SOURCE_FILES_PROPERTIES("crypt_commoncrypto.c" COMPILE_FLAGS "-Wno-deprecated")
ELSEIF(USE_HTTPS STREQUAL "OpenSSL")
ADD_DEFINITIONS(-DCRYPT_OPENSSL)
INCLUDE_DIRECTORIES(${OPENSSL_INCLUDE_DIR})
SET(SRC_NTLMCLIENT_CRYPTO "crypt_openssl.c" "crypt_openssl.h")
ELSEIF(USE_HTTPS STREQUAL "OpenSSL-Dynamic")
ADD_DEFINITIONS(-DCRYPT_OPENSSL)
ADD_DEFINITIONS(-DCRYPT_OPENSSL_DYNAMIC)
SET(SRC_NTLMCLIENT_CRYPTO "crypt_openssl.c" "crypt_openssl.h")
ELSEIF(USE_HTTPS STREQUAL "mbedTLS")
ADD_DEFINITIONS(-DCRYPT_MBEDTLS)
INCLUDE_DIRECTORIES(${MBEDTLS_INCLUDE_DIR})
SET(SRC_NTLMCLIENT_CRYPTO "crypt_mbedtls.c" "crypt_mbedtls.h")
ELSE()
MESSAGE(FATAL_ERROR "Unable to use libgit2's HTTPS backend (${USE_HTTPS}) for NTLM crypto")
ENDIF()
ADD_LIBRARY(ntlmclient OBJECT ${SRC_NTLMCLIENT} ${SRC_NTLMCLIENT_UNICODE} ${SRC_NTLMCLIENT_CRYPTO})
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/crypt_mbedtls.c
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#include <stdlib.h>
#include <string.h>
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/des.h"
#include "mbedtls/entropy.h"
#include "mbedtls/md4.h"
#include "ntlm.h"
#include "crypt.h"
bool ntlm_crypt_init(ntlm_client *ntlm)
{
const mbedtls_md_info_t *info = mbedtls_md_info_from_type(MBEDTLS_MD_MD5);
mbedtls_md_init(&ntlm->crypt_ctx.hmac);
if (mbedtls_md_setup(&ntlm->crypt_ctx.hmac, info, 1) != 0) {
ntlm_client_set_errmsg(ntlm, "could not setup mbedtls digest");
return false;
}
return true;
}
bool ntlm_random_bytes(
unsigned char *out,
ntlm_client *ntlm,
size_t len)
{
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_entropy_context entropy;
bool ret = true;
const unsigned char personalization[] = {
0xec, 0xb5, 0xd1, 0x0b, 0x8f, 0x15, 0x1f, 0xc2,
0xe4, 0x8e, 0xec, 0x36, 0xf7, 0x0a, 0x45, 0x9a,
0x1f, 0xe1, 0x35, 0x58, 0xb1, 0xcb, 0xfd, 0x8a,
0x57, 0x5c, 0x75, 0x7d, 0x2f, 0xc9, 0x70, 0xac
};
mbedtls_ctr_drbg_init(&ctr_drbg);
mbedtls_entropy_init(&entropy);
if (mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func,
&entropy, personalization, sizeof(personalization)) ||
mbedtls_ctr_drbg_random(&ctr_drbg, out, len)) {
ntlm_client_set_errmsg(ntlm, "random generation failed");
ret = false;
}
mbedtls_entropy_free(&entropy);
mbedtls_ctr_drbg_free(&ctr_drbg);
return ret;
}
bool ntlm_des_encrypt(
ntlm_des_block *out,
ntlm_client *ntlm,
ntlm_des_block *plaintext,
ntlm_des_block *key)
{
mbedtls_des_context ctx;
bool success = false;
mbedtls_des_init(&ctx);
if (mbedtls_des_setkey_enc(&ctx, *key) ||
mbedtls_des_crypt_ecb(&ctx, *plaintext, *out)) {
ntlm_client_set_errmsg(ntlm, "DES encryption failed");
goto done;
}
success = true;
done:
mbedtls_des_free(&ctx);
return success;
}
bool ntlm_md4_digest(
unsigned char out[CRYPT_MD4_DIGESTSIZE],
ntlm_client *ntlm,
const unsigned char *in,
size_t in_len)
{
mbedtls_md4_context ctx;
NTLM_UNUSED(ntlm);
mbedtls_md4_init(&ctx);
mbedtls_md4_starts(&ctx);
mbedtls_md4_update(&ctx, in, in_len);
mbedtls_md4_finish(&ctx, out);
mbedtls_md4_free(&ctx);
return true;
}
bool ntlm_hmac_md5_init(
ntlm_client *ntlm,
const unsigned char *key,
size_t key_len)
{
if (ntlm->crypt_ctx.hmac_initialized) {
if (mbedtls_md_hmac_reset(&ntlm->crypt_ctx.hmac))
return false;
}
ntlm->crypt_ctx.hmac_initialized = !mbedtls_md_hmac_starts(&ntlm->crypt_ctx.hmac, key, key_len);
return ntlm->crypt_ctx.hmac_initialized;
}
bool ntlm_hmac_md5_update(
ntlm_client *ntlm,
const unsigned char *in,
size_t in_len)
{
return !mbedtls_md_hmac_update(&ntlm->crypt_ctx.hmac, in, in_len);
}
bool ntlm_hmac_md5_final(
unsigned char *out,
size_t *out_len,
ntlm_client *ntlm)
{
if (*out_len < CRYPT_MD5_DIGESTSIZE)
return false;
return !mbedtls_md_hmac_finish(&ntlm->crypt_ctx.hmac, out);
}
void ntlm_crypt_shutdown(ntlm_client *ntlm)
{
mbedtls_md_free(&ntlm->crypt_ctx.hmac);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/ntlm.c
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <arpa/inet.h>
#include "ntlm.h"
#include "unicode.h"
#include "utf8.h"
#include "crypt.h"
#include "compat.h"
#include "util.h"
#define NTLM_ASSERT_ARG(expr) do { \
if (!(expr)) \
return NTLM_CLIENT_ERROR_INVALID_INPUT; \
} while(0)
#define NTLM_ASSERT(ntlm, expr) do { \
if (!(expr)) { \
ntlm_client_set_errmsg(ntlm, "internal error: " #expr); \
return -1; \
} \
} while(0)
unsigned char ntlm_client_signature[] = NTLM_SIGNATURE;
static bool supports_unicode(ntlm_client *ntlm)
{
return (ntlm->flags & NTLM_CLIENT_DISABLE_UNICODE) ?
false : true;
}
static inline bool increment_size(size_t *out, size_t incr)
{
if (SIZE_MAX - *out < incr) {
*out = (size_t)-1;
return false;
}
*out = *out + incr;
return true;
}
ntlm_client *ntlm_client_init(ntlm_client_flags flags)
{
ntlm_client *ntlm = NULL;
if ((ntlm = calloc(1, sizeof(ntlm_client))) == NULL)
return NULL;
ntlm->flags = flags;
return ntlm;
}
#define ENSURE_INITIALIZED(ntlm) \
do { \
if (!(ntlm)->unicode_initialized) \
(ntlm)->unicode_initialized = ntlm_unicode_init((ntlm)); \
if (!(ntlm)->crypt_initialized) \
(ntlm)->crypt_initialized = ntlm_crypt_init((ntlm)); \
if (!(ntlm)->unicode_initialized || \
!(ntlm)->crypt_initialized) \
return -1; \
} while(0)
void ntlm_client_set_errmsg(ntlm_client *ntlm, const char *errmsg)
{
ntlm->state = NTLM_STATE_ERROR;
ntlm->errmsg = errmsg;
}
const char *ntlm_client_errmsg(ntlm_client *ntlm)
{
if (!ntlm)
return "internal error";
return ntlm->errmsg ? ntlm->errmsg : "no error";
}
int ntlm_client_set_version(
ntlm_client *ntlm,
uint8_t major,
uint8_t minor,
uint16_t build)
{
NTLM_ASSERT_ARG(ntlm);
ntlm->host_version.major = major;
ntlm->host_version.minor = minor;
ntlm->host_version.build = build;
ntlm->host_version.reserved = 0x0f000000;
ntlm->flags |= NTLM_ENABLE_HOSTVERSION;
return 0;
}
#define reset(ptr) do { free(ptr); ptr = NULL; } while(0)
static void free_hostname(ntlm_client *ntlm)
{
reset(ntlm->hostname);
reset(ntlm->hostdomain);
reset(ntlm->hostname_utf16);
ntlm->hostname_utf16_len = 0;
}
int ntlm_client_set_hostname(
ntlm_client *ntlm,
const char *hostname,
const char *domain)
{
NTLM_ASSERT_ARG(ntlm);
ENSURE_INITIALIZED(ntlm);
free_hostname(ntlm);
if (hostname && (ntlm->hostname = strdup(hostname)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return -1;
}
if (domain && (ntlm->hostdomain = strdup(domain)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return -1;
}
if (hostname && supports_unicode(ntlm) && !ntlm_unicode_utf8_to_16(
&ntlm->hostname_utf16,
&ntlm->hostname_utf16_len,
ntlm,
hostname,
strlen(hostname)))
return -1;
return 0;
}
static void free_credentials(ntlm_client *ntlm)
{
if (ntlm->password)
ntlm_memzero(ntlm->password, strlen(ntlm->password));
if (ntlm->password_utf16)
ntlm_memzero(ntlm->password_utf16, ntlm->password_utf16_len);
reset(ntlm->username);
reset(ntlm->username_upper);
reset(ntlm->userdomain);
reset(ntlm->password);
reset(ntlm->username_utf16);
reset(ntlm->username_upper_utf16);
reset(ntlm->userdomain_utf16);
reset(ntlm->password_utf16);
ntlm->username_utf16_len = 0;
ntlm->username_upper_utf16_len = 0;
ntlm->userdomain_utf16_len = 0;
ntlm->password_utf16_len = 0;
}
int ntlm_client_set_credentials(
ntlm_client *ntlm,
const char *username,
const char *domain,
const char *password)
{
NTLM_ASSERT_ARG(ntlm);
ENSURE_INITIALIZED(ntlm);
free_credentials(ntlm);
if ((username && (ntlm->username = strdup(username)) == NULL) ||
(domain && (ntlm->userdomain = strdup(domain)) == NULL) ||
(password && (ntlm->password = strdup(password)) == NULL)) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return -1;
}
if (username && supports_unicode(ntlm)) {
if ((ntlm->username_upper = strdup(username)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return -1;
}
utf8upr(ntlm->username_upper);
if (!ntlm_unicode_utf8_to_16(
&ntlm->username_utf16,
&ntlm->username_utf16_len,
ntlm,
ntlm->username,
strlen(ntlm->username)))
return -1;
if (!ntlm_unicode_utf8_to_16(
&ntlm->username_upper_utf16,
&ntlm->username_upper_utf16_len,
ntlm,
ntlm->username_upper,
strlen(ntlm->username_upper)))
return -1;
}
if (domain && supports_unicode(ntlm) && !ntlm_unicode_utf8_to_16(
&ntlm->userdomain_utf16,
&ntlm->userdomain_utf16_len,
ntlm,
ntlm->userdomain,
strlen(ntlm->userdomain)))
return -1;
return 0;
}
int ntlm_client_set_target(ntlm_client *ntlm, const char *target)
{
NTLM_ASSERT_ARG(ntlm);
ENSURE_INITIALIZED(ntlm);
free(ntlm->target);
free(ntlm->target_utf16);
ntlm->target = NULL;
ntlm->target_utf16 = NULL;
if (target) {
if ((ntlm->target = strdup(target)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return -1;
}
if (supports_unicode(ntlm) && !ntlm_unicode_utf8_to_16(
&ntlm->target_utf16,
&ntlm->target_utf16_len,
ntlm,
ntlm->target,
strlen(ntlm->target)))
return -1;
}
return 0;
}
int ntlm_client_set_nonce(ntlm_client *ntlm, uint64_t nonce)
{
NTLM_ASSERT_ARG(ntlm);
ntlm->nonce = nonce;
return 0;
}
int ntlm_client_set_timestamp(ntlm_client *ntlm, uint64_t timestamp)
{
NTLM_ASSERT_ARG(ntlm);
ntlm->timestamp = timestamp;
return 0;
}
static inline bool write_buf(
ntlm_client *ntlm,
ntlm_buf *out,
const unsigned char *buf,
size_t len)
{
if (!len)
return true;
if (out->len - out->pos < len) {
ntlm_client_set_errmsg(ntlm, "out of buffer space");
return false;
}
memcpy(&out->buf[out->pos], buf, len);
out->pos += len;
return true;
}
static inline bool write_byte(
ntlm_client *ntlm,
ntlm_buf *out,
uint8_t value)
{
if (out->len - out->pos < 1) {
ntlm_client_set_errmsg(ntlm, "out of buffer space");
return false;
}
out->buf[out->pos++] = value;
return true;
}
static inline bool write_int16(
ntlm_client *ntlm,
ntlm_buf *out,
uint16_t value)
{
if (out->len - out->pos < 2) {
ntlm_client_set_errmsg(ntlm, "out of buffer space");
return false;
}
out->buf[out->pos++] = (value & 0x000000ff);
out->buf[out->pos++] = (value & 0x0000ff00) >> 8;
return true;
}
static inline bool write_int32(
ntlm_client *ntlm,
ntlm_buf *out,
uint32_t value)
{
if (out->len - out->pos < 2) {
ntlm_client_set_errmsg(ntlm, "out of buffer space");
return false;
}
out->buf[out->pos++] = (value & 0x000000ff);
out->buf[out->pos++] = (value & 0x0000ff00) >> 8;
out->buf[out->pos++] = (value & 0x00ff0000) >> 16;
out->buf[out->pos++] = (value & 0xff000000) >> 24;
return true;
}
static inline bool write_version(
ntlm_client *ntlm,
ntlm_buf *out,
ntlm_version *version)
{
return write_byte(ntlm, out, version->major) &&
write_byte(ntlm, out, version->minor) &&
write_int16(ntlm, out, version->build) &&
write_int32(ntlm, out, version->reserved);
}
static inline bool write_bufinfo(
ntlm_client *ntlm,
ntlm_buf *out,
size_t len,
size_t offset)
{
if (len > UINT16_MAX) {
ntlm_client_set_errmsg(ntlm, "invalid string, too long");
return false;
}
if (offset > UINT32_MAX) {
ntlm_client_set_errmsg(ntlm, "invalid string, invalid offset");
return false;
}
return write_int16(ntlm, out, (uint16_t)len) &&
write_int16(ntlm, out, (uint16_t)len) &&
write_int32(ntlm, out, (uint32_t)offset);
}
static inline bool read_buf(
unsigned char *out,
ntlm_client *ntlm,
ntlm_buf *message,
size_t len)
{
if (message->len - message->pos < len) {
ntlm_client_set_errmsg(ntlm, "truncated message");
return false;
}
memcpy(out, &message->buf[message->pos], len);
message->pos += len;
return true;
}
static inline bool read_byte(
uint8_t *out,
ntlm_client *ntlm,
ntlm_buf *message)
{
if (message->len - message->pos < 1) {
ntlm_client_set_errmsg(ntlm, "truncated message");
return false;
}
*out = message->buf[message->pos++];
return true;
}
static inline bool read_int16(
uint16_t *out,
ntlm_client *ntlm,
ntlm_buf *message)
{
if (message->len - message->pos < 2) {
ntlm_client_set_errmsg(ntlm, "truncated message");
return false;
}
*out =
((message->buf[message->pos] & 0xff)) |
((message->buf[message->pos+1] & 0xff) << 8);
message->pos += 2;
return true;
}
static inline bool read_int32(
uint32_t *out,
ntlm_client *ntlm,
ntlm_buf *message)
{
if (message->len - message->pos < 4) {
ntlm_client_set_errmsg(ntlm, "truncated message");
return false;
}
*out =
((message->buf[message->pos] & 0xff)) |
((message->buf[message->pos+1] & 0xff) << 8) |
((message->buf[message->pos+2] & 0xff) << 16) |
((message->buf[message->pos+3] & 0xff) << 24);
message->pos += 4;
return true;
}
static inline bool read_int64(
uint64_t *out,
ntlm_client *ntlm,
ntlm_buf *message)
{
if (message->len - message->pos < 8) {
ntlm_client_set_errmsg(ntlm, "truncated message");
return false;
}
*out =
((uint64_t)(message->buf[message->pos] & 0xff)) |
((uint64_t)(message->buf[message->pos+1] & 0xff) << 8) |
((uint64_t)(message->buf[message->pos+2] & 0xff) << 16) |
((uint64_t)(message->buf[message->pos+3] & 0xff) << 24) |
((uint64_t)(message->buf[message->pos+4] & 0xff) << 32) |
((uint64_t)(message->buf[message->pos+5] & 0xff) << 40) |
((uint64_t)(message->buf[message->pos+6] & 0xff) << 48) |
((uint64_t)(message->buf[message->pos+7] & 0xff) << 56);
message->pos += 8;
return true;
}
static inline bool read_version(
ntlm_version *out,
ntlm_client *ntlm,
ntlm_buf *message)
{
return read_byte(&out->major, ntlm, message) &&
read_byte(&out->minor, ntlm, message) &&
read_int16(&out->build, ntlm, message) &&
read_int32(&out->reserved, ntlm, message);
}
static inline bool read_bufinfo(
uint16_t *out_len,
uint32_t *out_offset,
ntlm_client *ntlm,
ntlm_buf *message)
{
uint16_t allocated;
return read_int16(out_len, ntlm, message) &&
read_int16(&allocated, ntlm, message) &&
read_int32(out_offset, ntlm, message);
}
static inline bool read_string_unicode(
char **out,
ntlm_client *ntlm,
ntlm_buf *message,
uint8_t string_len)
{
size_t out_len;
int ret = ntlm_unicode_utf16_to_8(out,
&out_len,
ntlm,
(char *)&message->buf[message->pos],
string_len);
message->pos += string_len;
return ret;
}
static inline bool read_string_ascii(
char **out,
ntlm_client *ntlm,
ntlm_buf *message,
uint8_t string_len)
{
char *str;
if ((str = malloc(string_len + 1)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return false;
}
memcpy(str, &message->buf[message->pos], string_len);
str[string_len] = '\0';
message->pos += string_len;
*out = str;
return true;
}
static inline bool read_string(
char **out,
ntlm_client *ntlm,
ntlm_buf *message,
uint8_t string_len,
bool unicode)
{
if (unicode)
return read_string_unicode(out, ntlm, message, string_len);
else
return read_string_ascii(out, ntlm, message, string_len);
}
static inline bool read_target_info(
char **server_out,
char **domain_out,
char **server_dns_out,
char **domain_dns_out,
ntlm_client *ntlm,
ntlm_buf *message,
bool unicode)
{
uint16_t block_type, block_len;
bool done = false;
*server_out = NULL;
*domain_out = NULL;
*server_dns_out = NULL;
*domain_dns_out = NULL;
while (!done && (message->len - message->pos) >= 4) {
if (!read_int16(&block_type, ntlm, message) ||
!read_int16(&block_len, ntlm, message)) {
ntlm_client_set_errmsg(ntlm, "truncated target info block");
return false;
}
if (!block_type && block_len) {
ntlm_client_set_errmsg(ntlm, "invalid target info block");
return -1;
}
switch (block_type) {
case NTLM_TARGET_INFO_DOMAIN:
if (!read_string(domain_out, ntlm, message, block_len, unicode))
return -1;
break;
case NTLM_TARGET_INFO_SERVER:
if (!read_string(server_out, ntlm, message, block_len, unicode))
return -1;
break;
case NTLM_TARGET_INFO_DOMAIN_DNS:
if (!read_string(domain_dns_out, ntlm, message, block_len, unicode))
return -1;
break;
case NTLM_TARGET_INFO_SERVER_DNS:
if (!read_string(server_dns_out, ntlm, message, block_len, unicode))
return -1;
break;
case NTLM_TARGET_INFO_END:
done = true;
break;
default:
ntlm_client_set_errmsg(ntlm, "unknown target info block type");
return -1;
}
}
if (message->len != message->pos) {
ntlm_client_set_errmsg(ntlm,
"invalid extra data in target info section");
return false;
}
return true;
}
int ntlm_client_negotiate(
const unsigned char **out,
size_t *out_len,
ntlm_client *ntlm)
{
size_t hostname_len, domain_len;
size_t domain_offset = 0;
size_t hostname_offset = 0;
uint32_t flags = 0;
NTLM_ASSERT_ARG(out);
NTLM_ASSERT_ARG(out_len);
NTLM_ASSERT_ARG(ntlm);
*out = NULL;
*out_len = 0;
if (ntlm->state != NTLM_STATE_NEGOTIATE) {
ntlm_client_set_errmsg(ntlm, "ntlm handle in invalid state");
return -1;
}
flags |= NTLM_NEGOTIATE_OEM;
if (supports_unicode(ntlm))
flags |= NTLM_NEGOTIATE_UNICODE;
if (!(ntlm->flags & NTLM_CLIENT_DISABLE_NTLM2) ||
(ntlm->flags & NTLM_CLIENT_ENABLE_NTLM))
flags |= NTLM_NEGOTIATE_NTLM;
if (!(ntlm->flags & NTLM_CLIENT_DISABLE_REQUEST_TARGET))
flags |= NTLM_NEGOTIATE_REQUEST_TARGET;
hostname_len = ntlm->hostname ? strlen(ntlm->hostname) : 0;
domain_len = ntlm->hostdomain ? strlen(ntlm->hostdomain) : 0;
/* Minimum header size */
ntlm->negotiate.len = 16;
/* Include space for security buffer descriptors */
if (domain_len)
increment_size(&ntlm->negotiate.len, 8);
if (hostname_len)
increment_size(&ntlm->negotiate.len, 8);
if (ntlm->flags & NTLM_ENABLE_HOSTVERSION)
increment_size(&ntlm->negotiate.len, 8);
/* Location of security buffers */
if (hostname_len) {
flags |= NTLM_NEGOTIATE_WORKSTATION_SUPPLIED;
hostname_offset = ntlm->negotiate.len;
increment_size(&ntlm->negotiate.len, hostname_len);
}
if (domain_len) {
flags |= NTLM_NEGOTIATE_DOMAIN_SUPPLIED;
domain_offset = ntlm->negotiate.len;
increment_size(&ntlm->negotiate.len, domain_len);
}
if (ntlm->negotiate.len == (size_t)-1) {
ntlm_client_set_errmsg(ntlm, "message too large");
return -1;
}
if ((ntlm->negotiate.buf = calloc(1, ntlm->negotiate.len)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return -1;
}
if (!write_buf(ntlm, &ntlm->negotiate,
ntlm_client_signature, sizeof(ntlm_client_signature)) ||
!write_int32(ntlm, &ntlm->negotiate, 1) ||
!write_int32(ntlm, &ntlm->negotiate, flags))
return -1;
/* Domain information */
if (domain_len > 0 &&
!write_bufinfo(ntlm, &ntlm->negotiate, domain_len, domain_offset))
return -1;
/* Workstation information */
if (hostname_len > 0 &&
!write_bufinfo(ntlm, &ntlm->negotiate, hostname_len, hostname_offset))
return -1;
/* Version number */
if (!!(ntlm->flags & NTLM_ENABLE_HOSTVERSION) &&
!write_version(ntlm, &ntlm->negotiate, &ntlm->host_version))
return -1;
if (hostname_len > 0) {
NTLM_ASSERT(ntlm, hostname_offset == ntlm->negotiate.pos);
if (!write_buf(ntlm, &ntlm->negotiate,
(const unsigned char *)ntlm->hostname, hostname_len))
return -1;
}
if (domain_len > 0) {
NTLM_ASSERT(ntlm, domain_offset == ntlm->negotiate.pos);
if (!write_buf(ntlm, &ntlm->negotiate,
(const unsigned char *)ntlm->hostdomain, domain_len))
return -1;
}
NTLM_ASSERT(ntlm, ntlm->negotiate.pos == ntlm->negotiate.len);
ntlm->state = NTLM_STATE_CHALLENGE;
*out = ntlm->negotiate.buf;
*out_len = ntlm->negotiate.len;
return 0;
}
int ntlm_client_set_challenge(
ntlm_client *ntlm,
const unsigned char *challenge_msg,
size_t challenge_msg_len)
{
unsigned char signature[8];
ntlm_buf challenge;
uint32_t type_indicator, header_end;
uint16_t name_len, info_len = 0;
uint32_t name_offset, info_offset = 0;
bool unicode, has_target_info = false;
NTLM_ASSERT_ARG(ntlm);
NTLM_ASSERT_ARG(challenge_msg || !challenge_msg_len);
ENSURE_INITIALIZED(ntlm);
if (ntlm->state != NTLM_STATE_NEGOTIATE &&
ntlm->state != NTLM_STATE_CHALLENGE) {
ntlm_client_set_errmsg(ntlm, "ntlm handle in invalid state");
return -1;
}
challenge.buf = (unsigned char *)challenge_msg;
challenge.len = challenge_msg_len;
challenge.pos = 0;
if (!read_buf(signature, ntlm, &challenge, 8) ||
!read_int32(&type_indicator, ntlm, &challenge) ||
!read_bufinfo(&name_len, &name_offset, ntlm, &challenge) ||
!read_int32(&ntlm->challenge.flags, ntlm, &challenge) ||
!read_int64(&ntlm->challenge.nonce, ntlm, &challenge))
return -1;
if (memcmp(signature,
ntlm_client_signature, sizeof(ntlm_client_signature)) != 0) {
ntlm_client_set_errmsg(ntlm, "invalid message signature");
return -1;
}
if (type_indicator != 2) {
ntlm_client_set_errmsg(ntlm, "invalid message indicator");
return -1;
}
/*
* If there's additional space before the data section, that's the
* target information description section.
*/
header_end = challenge.len;
if (name_offset && name_offset < header_end)
header_end = name_offset;
if ((header_end - challenge.pos) >= 16) {
has_target_info = true;
}
if (!has_target_info &&
(ntlm->challenge.flags & NTLM_NEGOTIATE_TARGET_INFO)) {
ntlm_client_set_errmsg(ntlm,
"truncated message; expected target info");
return -1;
}
/*
* If there's a target info section then advanced over the reserved
* space and read the target information.
*/
if (has_target_info) {
uint64_t reserved;
if (!read_int64(&reserved, ntlm, &challenge)) {
ntlm_client_set_errmsg(ntlm,
"truncated message; expected reserved space");
return -1;
}
if (reserved != 0) {
ntlm_client_set_errmsg(ntlm,
"invalid message; expected reserved space to be empty");
return -1;
}
if (!read_bufinfo(&info_len, &info_offset, ntlm, &challenge)) {
ntlm_client_set_errmsg(ntlm,
"truncated message; expected target info");
return -1;
}
}
unicode = !!(ntlm->challenge.flags & NTLM_NEGOTIATE_UNICODE);
/*
* If there's still additional space before the data section,
* that's the server's version information.
*/
if (info_offset && info_offset < header_end)
header_end = info_offset;
if (ntlm->challenge.flags & NTLM_NEGOTIATE_VERSION) {
if ((header_end - challenge.pos) != sizeof(ntlm_version) ||
!read_version(&ntlm->challenge.target_version,
ntlm, &challenge)) {
ntlm_client_set_errmsg(ntlm,
"truncated message; expected version");
return -1;
}
}
/* validate data section */
if ((name_offset && name_offset < challenge.pos) ||
challenge.len < name_len ||
(challenge.len - name_len) < name_offset) {
ntlm_client_set_errmsg(ntlm,
"invalid message; invalid target name buffer");
return -1;
}
if ((info_offset && info_offset < challenge.pos) ||
challenge.len < info_len ||
(challenge.len - info_len) < info_offset) {
ntlm_client_set_errmsg(ntlm,
"invalid message; invalid target info buffer");
return -1;
}
/* advance to the data section */
if (name_len && name_offset) {
challenge.pos = name_offset;
if (!read_string(&ntlm->challenge.target,
ntlm, &challenge, name_len, unicode)) {
ntlm_client_set_errmsg(ntlm,
"truncated message; truncated target name");
return -1;
}
}
if (info_len && info_offset) {
ntlm_buf info_buf;
challenge.pos = info_offset;
/* create a copy of the target info; we need the literal data */
if ((ntlm->challenge.target_info = malloc(info_len)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return -1;
}
if (!read_buf(ntlm->challenge.target_info,
ntlm, &challenge, info_len)) {
ntlm_client_set_errmsg(ntlm,
"truncated message; truncated target info");
return -1;
}
info_buf.buf = ntlm->challenge.target_info;
info_buf.pos = 0;
info_buf.len = info_len;
/* then set up the target info and parse it */
if (!read_target_info(&ntlm->challenge.target_server,
&ntlm->challenge.target_domain,
&ntlm->challenge.target_server_dns,
&ntlm->challenge.target_domain_dns,
ntlm, &info_buf, unicode))
return -1;
ntlm->challenge.target_info_len = info_len;
}
ntlm->state = NTLM_STATE_RESPONSE;
return 0;
}
uint64_t ntlm_client_challenge_nonce(ntlm_client *ntlm)
{
return ntlm->challenge.nonce;
}
const char *ntlm_client_target(ntlm_client *ntlm)
{
return ntlm->challenge.target;
}
const char *ntlm_client_target_server(ntlm_client *ntlm)
{
return ntlm->challenge.target_server;
}
const char *ntlm_client_target_domain(ntlm_client *ntlm)
{
return ntlm->challenge.target_domain;
}
const char *ntlm_client_target_server_dns(ntlm_client *ntlm)
{
return ntlm->challenge.target_server_dns;
}
const char *ntlm_client_target_domain_dns(ntlm_client *ntlm)
{
return ntlm->challenge.target_domain_dns;
}
#define EVEN_PARITY(a) \
(!!((a) & 0x01ll) ^ !!((a) & 0x02ll) ^ \
!!((a) & 0x04ll) ^ !!((a) & 0x08ll) ^ \
!!((a) & 0x10ll) ^ !!((a) & 0x20ll) ^ \
!!((a) & 0x40ll) ^ !!((a) & 0x80ll))
static void generate_odd_parity(ntlm_des_block *block)
{
size_t i;
for (i = 0; i < sizeof(ntlm_des_block); i++)
(*block)[i] |= (1 ^ EVEN_PARITY((*block)[i]));
}
static void des_key_from_password(
ntlm_des_block *out,
const unsigned char *plaintext,
size_t plaintext_len)
{
size_t i;
plaintext_len = MIN(plaintext_len, 7);
memset(*out, 0, sizeof(ntlm_des_block));
for (i = 0; i < plaintext_len; i++) {
size_t j = (7 - i);
uint8_t mask = (0xff >> j);
(*out)[i] |= ((plaintext[i] & (0xff - mask)) >> i);
(*out)[i+1] |= ((plaintext[i] & mask) << j);
}
generate_odd_parity(out);
}
static inline bool generate_lm_hash(
ntlm_des_block out[2],
ntlm_client *ntlm,
const char *password)
{
/* LM encrypts this known plaintext using the password as a key */
ntlm_des_block plaintext = NTLM_LM_PLAINTEXT;
ntlm_des_block keystr1, keystr2;
size_t keystr1_len, keystr2_len;
ntlm_des_block key1, key2;
size_t password_len, i;
/* Copy the first 14 characters of the password, uppercased */
memset(&keystr1, 0, sizeof(keystr1));
memset(&keystr2, 0, sizeof(keystr2));
password_len = password ? strlen(password) : 0;
/* Split the password into two 7 byte chunks */
keystr1_len = MIN(7, password_len);
keystr2_len = (password_len > 7) ? MIN(14, password_len) - 7 : 0;
for (i = 0; i < keystr1_len; i++)
keystr1[i] = (unsigned char)toupper(password[i]);
for (i = 0; i < keystr2_len; i++)
keystr2[i] = (unsigned char)toupper(password[i+7]);
/* DES encrypt the LM constant using the password as the key */
des_key_from_password(&key1, keystr1, keystr1_len);
des_key_from_password(&key2, keystr2, keystr2_len);
return ntlm_des_encrypt(&out[0], ntlm, &plaintext, &key1) &&
ntlm_des_encrypt(&out[1], ntlm, &plaintext, &key2);
}
static void des_keys_from_lm_hash(ntlm_des_block out[3], ntlm_des_block lm_hash[2])
{
ntlm_des_block split[3];
memcpy(&split[0][0], &lm_hash[0][0], 7);
memcpy(&split[1][0], &lm_hash[0][7], 1);
memcpy(&split[1][1], &lm_hash[1][0], 6);
memcpy(&split[2][0], &lm_hash[1][6], 2);
des_key_from_password(&out[0], split[0], 7);
des_key_from_password(&out[1], split[1], 7);
des_key_from_password(&out[2], split[2], 2);
}
static bool generate_lm_response(ntlm_client *ntlm)
{
ntlm_des_block lm_hash[2], key[3], lm_response[3];
ntlm_des_block *challenge = (ntlm_des_block *)&ntlm->challenge.nonce;
/* Generate the LM hash from the password */
if (!generate_lm_hash(lm_hash, ntlm, ntlm->password))
return false;
/* Convert that LM hash to three DES keys */
des_keys_from_lm_hash(key, lm_hash);
/* Finally, encrypt the challenge with each of these keys */
if (!ntlm_des_encrypt(&lm_response[0], ntlm, challenge, &key[0]) ||
!ntlm_des_encrypt(&lm_response[1], ntlm, challenge, &key[1]) ||
!ntlm_des_encrypt(&lm_response[2], ntlm, challenge, &key[2]))
return false;
memcpy(&ntlm->lm_response[0], lm_response[0], 8);
memcpy(&ntlm->lm_response[8], lm_response[1], 8);
memcpy(&ntlm->lm_response[16], lm_response[2], 8);
ntlm->lm_response_len = sizeof(ntlm->lm_response);
return true;
}
static bool generate_ntlm_hash(
unsigned char out[NTLM_NTLM_HASH_LEN], ntlm_client *ntlm)
{
/* Generate the LM hash from the (Unicode) password */
if (ntlm->password && !ntlm_unicode_utf8_to_16(
&ntlm->password_utf16,
&ntlm->password_utf16_len,
ntlm,
ntlm->password,
strlen(ntlm->password)))
return false;
return ntlm_md4_digest(out,
ntlm,
(const unsigned char *)ntlm->password_utf16,
ntlm->password_utf16_len);
}
static bool generate_ntlm_response(ntlm_client *ntlm)
{
unsigned char ntlm_hash[NTLM_NTLM_HASH_LEN] = {0};
ntlm_des_block key[3], ntlm_response[3];
ntlm_des_block *challenge =
(ntlm_des_block *)&ntlm->challenge.nonce;
if (!generate_ntlm_hash(ntlm_hash, ntlm))
return false;
/* Convert that LM hash to three DES keys */
des_key_from_password(&key[0], &ntlm_hash[0], 7);
des_key_from_password(&key[1], &ntlm_hash[7], 7);
des_key_from_password(&key[2], &ntlm_hash[14], 2);
/* Finally, encrypt the challenge with each of these keys */
if (!ntlm_des_encrypt(&ntlm_response[0], ntlm, challenge, &key[0]) ||
!ntlm_des_encrypt(&ntlm_response[1], ntlm, challenge, &key[1]) ||
!ntlm_des_encrypt(&ntlm_response[2], ntlm, challenge, &key[2]))
return false;
memcpy(&ntlm->ntlm_response[0], ntlm_response[0], 8);
memcpy(&ntlm->ntlm_response[8], ntlm_response[1], 8);
memcpy(&ntlm->ntlm_response[16], ntlm_response[2], 8);
ntlm->ntlm_response_len = sizeof(ntlm->ntlm_response);
return true;
}
static bool generate_ntlm2_hash(
unsigned char out[NTLM_NTLM2_HASH_LEN], ntlm_client *ntlm)
{
unsigned char ntlm_hash[NTLM_NTLM_HASH_LEN] = {0};
const unsigned char *username = NULL, *target = NULL;
size_t username_len = 0, target_len = 0, out_len = NTLM_NTLM2_HASH_LEN;
if (!generate_ntlm_hash(ntlm_hash, ntlm))
return false;
if (ntlm->username_upper_utf16) {
username = (const unsigned char *)ntlm->username_upper_utf16;
username_len = ntlm->username_upper_utf16_len;
}
if (ntlm->target_utf16) {
target = (const unsigned char *)ntlm->target_utf16;
target_len = ntlm->target_utf16_len;
}
if (!ntlm_hmac_md5_init(ntlm, ntlm_hash, sizeof(ntlm_hash)) ||
!ntlm_hmac_md5_update(ntlm, username, username_len) ||
!ntlm_hmac_md5_update(ntlm, target, target_len) ||
!ntlm_hmac_md5_final(out, &out_len, ntlm)) {
ntlm_client_set_errmsg(ntlm, "failed to create HMAC-MD5");
return false;
}
NTLM_ASSERT(ntlm, out_len == NTLM_NTLM2_HASH_LEN);
return true;
}
static bool generate_ntlm2_challengehash(
unsigned char out[16],
ntlm_client *ntlm,
unsigned char ntlm2_hash[NTLM_NTLM2_HASH_LEN],
const unsigned char *blob,
size_t blob_len)
{
size_t out_len = 16;
if (!ntlm_hmac_md5_init(ntlm, ntlm2_hash, NTLM_NTLM2_HASH_LEN) ||
!ntlm_hmac_md5_update(ntlm, (const unsigned char *)&ntlm->challenge.nonce, 8) ||
!ntlm_hmac_md5_update(ntlm, blob, blob_len) ||
!ntlm_hmac_md5_final(out, &out_len, ntlm)) {
ntlm_client_set_errmsg(ntlm, "failed to create HMAC-MD5");
return false;
}
NTLM_ASSERT(ntlm, out_len == 16);
return true;
}
static bool generate_lm2_response(ntlm_client *ntlm,
unsigned char ntlm2_hash[NTLM_NTLM2_HASH_LEN])
{
unsigned char lm2_challengehash[16] = {0};
size_t lm2_len = 16;
uint64_t local_nonce;
local_nonce = ntlm_htonll(ntlm->nonce);
if (!ntlm_hmac_md5_init(ntlm, ntlm2_hash, NTLM_NTLM2_HASH_LEN) ||
!ntlm_hmac_md5_update(ntlm, (const unsigned char *)&ntlm->challenge.nonce, 8) ||
!ntlm_hmac_md5_update(ntlm, (const unsigned char *)&local_nonce, 8) ||
!ntlm_hmac_md5_final(lm2_challengehash, &lm2_len, ntlm)) {
ntlm_client_set_errmsg(ntlm, "failed to create HMAC-MD5");
return false;
}
NTLM_ASSERT(ntlm, lm2_len == 16);
memcpy(&ntlm->lm_response[0], lm2_challengehash, 16);
memcpy(&ntlm->lm_response[16], &local_nonce, 8);
ntlm->lm_response_len = 24;
return true;
}
static bool generate_timestamp(ntlm_client *ntlm)
{
if (!ntlm->timestamp)
ntlm->timestamp = (time(NULL) + 11644473600) * 10000000;
return true;
}
static bool generate_nonce(ntlm_client *ntlm)
{
unsigned char buf[8];
if (ntlm->nonce)
return true;
if (!ntlm_random_bytes(buf, ntlm, 8))
return false;
memcpy(&ntlm->nonce, buf, sizeof(uint64_t));
return true;
}
static bool generate_ntlm2_response(ntlm_client *ntlm)
{
size_t blob_len, ntlm2_response_len;
uint32_t signature;
uint64_t timestamp, nonce;
unsigned char ntlm2_hash[NTLM_NTLM2_HASH_LEN];
unsigned char challengehash[16] = {0};
unsigned char *blob;
if (!generate_timestamp(ntlm) ||
!generate_nonce(ntlm) ||
!generate_ntlm2_hash(ntlm2_hash, ntlm))
return false;
blob_len = ntlm->challenge.target_info_len + 32;
ntlm2_response_len = blob_len + 16;
if ((ntlm->ntlm2_response = malloc(ntlm2_response_len)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return false;
}
/* position the blob in the response; we'll use it then return it */
blob = ntlm->ntlm2_response + 16;
/* the blob's integer values are in network byte order */
signature = htonl(0x01010000);
timestamp = ntlm_htonll(ntlm->timestamp);
nonce = ntlm_htonll(ntlm->nonce);
/* construct the blob */
memcpy(&blob[0], &signature, 4);
memset(&blob[4], 0, 4);
memcpy(&blob[8], ×tamp, 8);
memcpy(&blob[16], &nonce, 8);
memset(&blob[24], 0, 4);
memcpy(&blob[28], ntlm->challenge.target_info, ntlm->challenge.target_info_len);
memset(&blob[28 + ntlm->challenge.target_info_len], 0, 4);
if (!generate_ntlm2_challengehash(challengehash, ntlm, ntlm2_hash, blob, blob_len))
return false;
memcpy(ntlm->ntlm2_response, challengehash, 16);
ntlm->ntlm2_response_len = ntlm2_response_len;
if (!generate_lm2_response(ntlm, ntlm2_hash))
return false;
return true;
}
int ntlm_client_response(
const unsigned char **out,
size_t *out_len,
ntlm_client *ntlm)
{
unsigned char *domain, *username, *hostname, *ntlm_rep, *session;
size_t lm_rep_len, lm_rep_offset, ntlm_rep_len, ntlm_rep_offset,
domain_len, domain_offset, username_len, username_offset,
hostname_len, hostname_offset, session_len, session_offset;
uint32_t flags = 0;
bool unicode;
NTLM_ASSERT_ARG(out);
NTLM_ASSERT_ARG(out_len);
NTLM_ASSERT_ARG(ntlm);
ENSURE_INITIALIZED(ntlm);
*out = NULL;
*out_len = 0;
if (ntlm->state != NTLM_STATE_RESPONSE) {
ntlm_client_set_errmsg(ntlm, "ntlm handle in invalid state");
return -1;
}
/*
* Minimum message size is 64 bytes:
* 8 byte signature,
* 4 byte message indicator,
* 6x8 byte security buffers
* 4 byte flags
*/
ntlm->response.len = 64;
unicode = supports_unicode(ntlm) &&
(ntlm->challenge.flags & NTLM_NEGOTIATE_UNICODE);
if (unicode)
flags |= NTLM_NEGOTIATE_UNICODE;
else
flags |= NTLM_NEGOTIATE_OEM;
if (unicode) {
domain = (unsigned char *)ntlm->userdomain_utf16;
domain_len = ntlm->userdomain_utf16_len;
username = (unsigned char *)ntlm->username_utf16;
username_len = ntlm->username_utf16_len;
hostname = (unsigned char *)ntlm->hostname_utf16;
hostname_len = ntlm->hostname_utf16_len;
} else {
domain = (unsigned char *)ntlm->userdomain;
domain_len = ntlm->userdomain ? strlen(ntlm->userdomain) : 0;
username = (unsigned char *)ntlm->username;
username_len = ntlm->username ? strlen(ntlm->username) : 0;
hostname = (unsigned char *)ntlm->hostname;
hostname_len = ntlm->hostname ? strlen(ntlm->hostname) : 0;
}
/* Negotiate our requested authentication type with the server's */
if (!(ntlm->flags & NTLM_CLIENT_DISABLE_NTLM2) &&
(ntlm->challenge.flags & NTLM_NEGOTIATE_NTLM)) {
flags |= NTLM_NEGOTIATE_NTLM;
if (!generate_ntlm2_response(ntlm))
return -1;
} else if ((ntlm->flags & NTLM_CLIENT_ENABLE_NTLM) &&
(ntlm->challenge.flags & NTLM_NEGOTIATE_NTLM)) {
flags |= NTLM_NEGOTIATE_NTLM;
if (!generate_ntlm_response(ntlm) ||
!generate_lm_response(ntlm))
return -1;
} else if (ntlm->flags & NTLM_CLIENT_ENABLE_LM) {
if (!generate_lm_response(ntlm))
return -1;
} else {
ntlm_client_set_errmsg(ntlm,
"no encryption options could be negotiated");
return -1;
}
domain_offset = ntlm->response.len;
increment_size(&ntlm->response.len, domain_len);
username_offset = ntlm->response.len;
increment_size(&ntlm->response.len, username_len);
hostname_offset = ntlm->response.len;
increment_size(&ntlm->response.len, hostname_len);
lm_rep_len = ntlm->lm_response_len;
lm_rep_offset = ntlm->response.len;
increment_size(&ntlm->response.len, lm_rep_len);
ntlm_rep = ntlm->ntlm2_response_len ?
ntlm->ntlm2_response : ntlm->ntlm_response;
ntlm_rep_len = ntlm->ntlm2_response_len ?
ntlm->ntlm2_response_len : ntlm->ntlm_response_len;
ntlm_rep_offset = ntlm->response.len;
increment_size(&ntlm->response.len, ntlm_rep_len);
session = NULL;
session_len = 0;
session_offset = ntlm->response.len;
increment_size(&ntlm->response.len, session_len);
if (ntlm->response.len == (size_t)-1) {
ntlm_client_set_errmsg(ntlm, "message too large");
return -1;
}
if ((ntlm->response.buf = calloc(1, ntlm->response.len)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return -1;
}
if (!write_buf(ntlm, &ntlm->response,
ntlm_client_signature, sizeof(ntlm_client_signature)) ||
!write_int32(ntlm, &ntlm->response, 3) ||
!write_bufinfo(ntlm, &ntlm->response, lm_rep_len, lm_rep_offset) ||
!write_bufinfo(ntlm, &ntlm->response, ntlm_rep_len, ntlm_rep_offset) ||
!write_bufinfo(ntlm, &ntlm->response, domain_len, domain_offset) ||
!write_bufinfo(ntlm, &ntlm->response, username_len, username_offset) ||
!write_bufinfo(ntlm, &ntlm->response, hostname_len, hostname_offset) ||
!write_bufinfo(ntlm, &ntlm->response, session_len, session_offset) ||
!write_int32(ntlm, &ntlm->response, flags) ||
!write_buf(ntlm, &ntlm->response, domain, domain_len) ||
!write_buf(ntlm, &ntlm->response, username, username_len) ||
!write_buf(ntlm, &ntlm->response, hostname, hostname_len) ||
!write_buf(ntlm, &ntlm->response, ntlm->lm_response, lm_rep_len) ||
!write_buf(ntlm, &ntlm->response, ntlm_rep, ntlm_rep_len) ||
!write_buf(ntlm, &ntlm->response, session, session_len))
return -1;
NTLM_ASSERT(ntlm, ntlm->response.pos == ntlm->response.len);
ntlm->state = NTLM_STATE_COMPLETE;
*out = ntlm->response.buf;
*out_len = ntlm->response.len;
return 0;
}
void ntlm_client_reset(ntlm_client *ntlm)
{
if (!ntlm)
return;
ntlm->state = NTLM_STATE_NEGOTIATE;
free_hostname(ntlm);
memset(&ntlm->host_version, 0, sizeof(ntlm_version));
reset(ntlm->target);
reset(ntlm->target_utf16);
ntlm->target_utf16_len = 0;
free_credentials(ntlm);
ntlm->nonce = 0;
ntlm->timestamp = 0;
memset(ntlm->lm_response, 0, NTLM_LM_RESPONSE_LEN);
ntlm->lm_response_len = 0;
memset(ntlm->ntlm_response, 0, NTLM_NTLM_RESPONSE_LEN);
ntlm->ntlm_response_len = 0;
reset(ntlm->ntlm2_response);
ntlm->ntlm2_response_len = 0;
reset(ntlm->negotiate.buf);
ntlm->negotiate.pos = 0;
ntlm->negotiate.len = 0;
reset(ntlm->response.buf);
ntlm->response.pos = 0;
ntlm->response.len = 0;
free(ntlm->challenge.target_info);
free(ntlm->challenge.target);
free(ntlm->challenge.target_domain);
free(ntlm->challenge.target_domain_dns);
free(ntlm->challenge.target_server);
free(ntlm->challenge.target_server_dns);
memset(&ntlm->challenge, 0, sizeof(ntlm_challenge));
}
void ntlm_client_free(ntlm_client *ntlm)
{
if (!ntlm)
return;
ntlm_crypt_shutdown(ntlm);
ntlm_unicode_shutdown(ntlm);
ntlm_client_reset(ntlm);
free(ntlm);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/ntlmclient.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef INCLUDE_NTLMCLIENT_H__
#define INCLUDE_NTLMCLIENT_H__
#include <stdlib.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#define NTLM_CLIENT_VERSION "0.9.0"
#define NTLM_CLIENT_VERSION_MAJOR 0
#define NTLM_CLIENT_VERSION_MINOR 9
#define NTLM_CLIENT_VERSION_TEENY 0
typedef struct ntlm_client ntlm_client;
typedef enum {
/**
* An error occurred; more details are available by querying
* `ntlm_client_errmsg`.
*/
NTLM_CLIENT_ERROR = -1,
/**
* The input provided to the function is missing or invalid.
*/
NTLM_CLIENT_ERROR_INVALID_INPUT = -2,
} ntlm_error_code;
/*
* Flags for initializing the `ntlm_client` context. A combination of
* these flags can be provided to `ntlm_client_init`.
*/
typedef enum {
/** Default settings for the `ntlm_client`. */
NTLM_CLIENT_DEFAULTS = 0,
/**
* Disable Unicode negotiation. By default, strings are converted
* into UTF-16 when supplied to the remote host, but if this flag
* is specified, localizable strings (like username and password)
* will only be sent to the server as they were provided to the
* library. Since the NTLM protocol does not deliver the locale
* information, these will be interpreted by the remote host in
* whatever locale is configured, and likely be corrupted unless
* you limit yourself to ASCII.
*
* You are discouraged from setting this flag.
*/
NTLM_CLIENT_DISABLE_UNICODE = (1 << 0),
/*
* Enable LM ("Lan Manager") authentication support. By default,
* LM authentication is disabled, since most remote servers have
* disabled support for it, and because it is both trivially
* brute-forced _and_ subject to rainbow table lookups. If this
* flag is enabled, LM is still not used unless NTLM2 support is
* also disabled.
*
* You are discouraged from setting this flag.
*/
NTLM_CLIENT_ENABLE_LM = (1 << 1),
/*
* Enable NTLM ("Lan Manager") authentication support. By default,
* NTLM authentication is disabled, since most remote servers have
* disabled support for it, due to its weakness. If this flag is
* enabled, NTLM is still not used unless NTLM2 support is also
* disabled.
*
* You are discouraged from setting this flag.
*/
NTLM_CLIENT_ENABLE_NTLM = (1 << 2),
/*
* Disable NTLM2 authentication support. By default, _only_ NTLM2
* support is enabled, since most remote servers will only support
* it due to its (relative) lack of weakness. If this flag is
* set, either NTLM or LM (or both) must be explicitly enabled or
* there will be no mechanisms available to use.
*
* You are discouraged from setting this flag.
*/
NTLM_CLIENT_DISABLE_NTLM2 = (1 << 3),
/*
* Request the target's name. By default, you are expected to
* provide the name of the target you are authenticating to (eg,
* the remote hostname). If set, the remote host will provide
* its idea of its hostname in the challenge message. You may
* then set the authentication target based on it.
*/
NTLM_CLIENT_DISABLE_REQUEST_TARGET = (1 << 4),
} ntlm_client_flags;
/** Declare a public function exported for application use. */
#if __GNUC__ >= 4 && !defined(NTLM_STATIC)
# define NTLM_EXTERN(type) extern \
__attribute__((visibility("default"))) \
type
#elif defined(_MSC_VER) && !defined(NTLM_STATIC)
# define NTLM_EXTERN(type) __declspec(dllexport) type
#else
# define NTLM_EXTERN(type) extern type
#endif
/**
* Initializes an `ntlm_client` context, which can begin sending
* and receiving NTLM authentication messages.
*
* @param flags the `ntlm_client_flag_t`s to use for negotiation.
* @return the `ntlm_client` context, or `NULL` if out-of-memory.
*/
NTLM_EXTERN(ntlm_client *) ntlm_client_init(ntlm_client_flags flags);
/**
* Gets the error message for the most recent error that occurred. If
* a function returns an error, more details can be retrieved with this
* function. The string returned is a constant string; it should not
* be freed.
*
* @return a constant string containing the error message.
*/
NTLM_EXTERN(const char *) ntlm_client_errmsg(ntlm_client *ntlm);
/**
* Sets the local hostname and domain. These strings should be in
* ASCII. They will be provided to the remote host during the
* negotiation phase.
*
* @param ntlm the `ntlm_client` context to configure
* @param hostname the hostname of the local machine
* @param domain the domain of the local machine
* @return 0 on success, non-zero on failure
*/
NTLM_EXTERN(int) ntlm_client_set_hostname(
ntlm_client *ntlm,
const char *hostname,
const char *domain);
/**
* Sets the local operating system version. These numbers are expected
* to correspond to Windows operating system versions; for example
* major version 6, minor version 2, build 9200 would correspond to
* Windows 8 (aka "NT 6.2").
*
* It is not likely that you need to set the local version.
*
* @param ntlm the `ntlm_client` context to configure
* @param major the major version number of the local operating system
* @param minor the minor version number of the local operating system
* @param build the build number of the local operating system
* @return 0 on success, non-zero on failure
*/
NTLM_EXTERN(int) ntlm_client_set_version(
ntlm_client *ntlm,
uint8_t major,
uint8_t minor,
uint16_t build);
/**
* Sets the username and password to authenticate with to the remote
* host. Username and password may be specified in UTF-8 but the
* domain should be in ASCII. These will not be sent to the remote host
* but will instead be used to compute the LM, NTLM or NTLM2 responses,
* which will be provided to the remote host during the response phase.
*
* @param ntlm the `ntlm_client` context to configure
* @param username the username to authenticate with
* @param domain the domain of the user authenticating
* @param password the password to authenticate with
* @return 0 on success, non-zero on failure
*/
NTLM_EXTERN(int) ntlm_client_set_credentials(
ntlm_client *ntlm,
const char *username,
const char *domain,
const char *password);
/**
* Sets the authentication target, your idea of the remote host's
* name. The target should be provided as ASCII. It will be
* provided to the remote host during the response phase.
*
* @param ntlm the `ntlm_client` context to configure
* @param target the name of the authentication target
* @return 0 on success, non-zero on failure
*/
NTLM_EXTERN(int) ntlm_client_set_target(
ntlm_client *ntlm,
const char *target);
/**
* Gets the remote host's nonce, as it was provided in the challenge
* message. This is an opaque 8 byte value that is used to compute
* the LM, NTLM and NTLM2 responses.
*
* @param ntlm the `ntlm_client` context to query
* @return the challenge from the remote host
*/
NTLM_EXTERN(uint64_t) ntlm_client_challenge_nonce(
ntlm_client *ntlm);
/**
* Gets the remote hosts's target name, which can be used as the
* authentication target. This will be given as it was provided
* in the challenge message.
*
* @param ntlm the `ntlm_client` context to query
* @return the remote host's target name
*/
NTLM_EXTERN(const char *) ntlm_client_target(ntlm_client *ntlm);
/**
* Gets the remote hosts's name, which is generally its short name.
* This will be given as it was provided in the challenge message.
*
* @param ntlm the `ntlm_client` context to query
* @return the remote host's server name
*/
NTLM_EXTERN(const char *) ntlm_client_target_server(ntlm_client *ntlm);
/**
* Gets the remote hosts's domain, which is generally the short or
* NT-style domain name. This will be given as it was provided in
* the challenge message.
*
* @param ntlm the `ntlm_client` context to query
* @return the remote host's domain
*/
NTLM_EXTERN(const char *) ntlm_client_target_domain(ntlm_client *ntlm);
/**
* Gets the remote hosts's DNS name, which is generally the long-style
* Active Directory or fully-qualified hostname. This will be given
* as it was provided in the challenge message.
*
* @param ntlm the `ntlm_client` context to query
* @return the remote host's DNS name
*/
NTLM_EXTERN(const char *) ntlm_client_target_server_dns(ntlm_client *ntlm);
/**
* Gets the remote hosts's DNS domain, which is generally the long-style
* Active Directory or fully-qualified domain name. This will be given
* as it was provided in the challenge message.
*
* @param ntlm the `ntlm_client` context to query
* @return the remote host's DNS domain
*/
NTLM_EXTERN(const char *) ntlm_client_target_domain_dns(ntlm_client *ntlm);
/**
* Computes a negotiation message (aka a "Type 1" message) to begin
* NTLM authentication with the server. The local hostname should be
* set before calling this function (if necessary). This message
* should be delivered to the server to indicate a willingness to begin
* NTLM authentication. This buffer should not be freed by the caller.
*
* @param out a pointer to the negotiation message
* @param out_len a pointer to the length of the negotiation message
* @param ntlm the `ntlm_client` context
* @return 0 on success, non-zero on failure
*/
NTLM_EXTERN(int) ntlm_client_negotiate(
const unsigned char **out,
size_t *out_len,
ntlm_client *ntlm);
/**
* Parses a challenge message (aka a "Type 2" message) from the server.
* This must be called in order to calculate the response to the
* authentication.
*
* @param ntlm the `ntlm_client` context
* @param message the challenge message from the server
* @param message_len the length of the challenge message
* @return 0 on success, non-zero on failure
*/
NTLM_EXTERN(int) ntlm_client_set_challenge(
ntlm_client *ntlm,
const unsigned char *message,
size_t message_len);
/**
* Computes a response message (aka a "Type 3" message) to complete
* NTLM authentication with the server. The credentials should be
* set before calling this function. This message should be delivered
* to the server to complete authentication. This buffer should not
* be freed by the caller.
*
* @param out a pointer to the response message
* @param out_len a pointer to the length of the response message
* @param ntlm the `ntlm_client` context
* @return 0 on success, non-zero on failure
*/
NTLM_EXTERN(int) ntlm_client_response(
const unsigned char **out,
size_t *out_len,
ntlm_client *ntlm);
/**
* Resets an `ntlm_client` context completely, so that authentication
* may be retried. You must set _all_ parameters again, including the
* target, username, password, etc. Once these values are configured
* again, the negotiation can begin.
*
* @param ntlm the `ntlm_client` context to reset
*/
NTLM_EXTERN(void) ntlm_client_reset(ntlm_client *ntlm);
/**
* Frees an `ntlm_client` context. This should be done to free memory
* belonging to the context. The context cannot be reused.
*
* @param ntlm the `ntlm_client` context to free
*/
NTLM_EXTERN(void) ntlm_client_free(ntlm_client *ntlm);
#ifdef __cplusplus
}
#endif
#endif /* INCLUDE_NTLMCLIENT_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/utf8.h
|
// The latest version of this library is available on GitHub;
// https://github.com/sheredom/utf8.h
// This is free and unencumbered software released into the public domain.
//
// Anyone is free to copy, modify, publish, use, compile, sell, or
// distribute this software, either in source code form or as a compiled
// binary, for any purpose, commercial or non-commercial, and by any
// means.
//
// In jurisdictions that recognize copyright laws, the author or authors
// of this software dedicate any and all copyright interest in the
// software to the public domain. We make this dedication for the benefit
// of the public at large and to the detriment of our heirs and
// successors. We intend this dedication to be an overt act of
// relinquishment in perpetuity of all present and future rights to this
// software under copyright law.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
// For more information, please refer to <http://unlicense.org/>
#ifndef SHEREDOM_UTF8_H_INCLUDED
#define SHEREDOM_UTF8_H_INCLUDED
#if defined(_MSC_VER)
#pragma warning(push)
// disable 'bytes padding added after construct' warning
#pragma warning(disable : 4820)
#endif
#include <stddef.h>
#include <stdlib.h>
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
#if defined(_MSC_VER)
typedef __int32 utf8_int32_t;
#else
#include <stdint.h>
typedef int32_t utf8_int32_t;
#endif
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wold-style-cast"
#pragma clang diagnostic ignored "-Wcast-qual"
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__clang__) || defined(__GNUC__)
#define utf8_nonnull __attribute__((nonnull))
#define utf8_pure __attribute__((pure))
#define utf8_restrict __restrict__
#define utf8_weak __attribute__((weak))
#elif defined(_MSC_VER)
#define utf8_nonnull
#define utf8_pure
#define utf8_restrict __restrict
#define utf8_weak __inline
#else
#error Non clang, non gcc, non MSVC compiler found!
#endif
#ifdef __cplusplus
#define utf8_null NULL
#else
#define utf8_null 0
#endif
// Return less than 0, 0, greater than 0 if src1 < src2, src1 == src2, src1 >
// src2 respectively, case insensitive.
utf8_nonnull utf8_pure utf8_weak int utf8casecmp(const void *src1,
const void *src2);
// Append the utf8 string src onto the utf8 string dst.
utf8_nonnull utf8_weak void *utf8cat(void *utf8_restrict dst,
const void *utf8_restrict src);
// Find the first match of the utf8 codepoint chr in the utf8 string src.
utf8_nonnull utf8_pure utf8_weak void *utf8chr(const void *src,
utf8_int32_t chr);
// Return less than 0, 0, greater than 0 if src1 < src2,
// src1 == src2, src1 > src2 respectively.
utf8_nonnull utf8_pure utf8_weak int utf8cmp(const void *src1,
const void *src2);
// Copy the utf8 string src onto the memory allocated in dst.
utf8_nonnull utf8_weak void *utf8cpy(void *utf8_restrict dst,
const void *utf8_restrict src);
// Number of utf8 codepoints in the utf8 string src that consists entirely
// of utf8 codepoints not from the utf8 string reject.
utf8_nonnull utf8_pure utf8_weak size_t utf8cspn(const void *src,
const void *reject);
// Duplicate the utf8 string src by getting its size, malloc'ing a new buffer
// copying over the data, and returning that. Or 0 if malloc failed.
utf8_nonnull utf8_weak void *utf8dup(const void *src);
// Number of utf8 codepoints in the utf8 string str,
// excluding the null terminating byte.
utf8_nonnull utf8_pure utf8_weak size_t utf8len(const void *str);
// Return less than 0, 0, greater than 0 if src1 < src2, src1 == src2, src1 >
// src2 respectively, case insensitive. Checking at most n bytes of each utf8
// string.
utf8_nonnull utf8_pure utf8_weak int utf8ncasecmp(const void *src1,
const void *src2, size_t n);
// Append the utf8 string src onto the utf8 string dst,
// writing at most n+1 bytes. Can produce an invalid utf8
// string if n falls partway through a utf8 codepoint.
utf8_nonnull utf8_weak void *utf8ncat(void *utf8_restrict dst,
const void *utf8_restrict src, size_t n);
// Return less than 0, 0, greater than 0 if src1 < src2,
// src1 == src2, src1 > src2 respectively. Checking at most n
// bytes of each utf8 string.
utf8_nonnull utf8_pure utf8_weak int utf8ncmp(const void *src1,
const void *src2, size_t n);
// Copy the utf8 string src onto the memory allocated in dst.
// Copies at most n bytes. If there is no terminating null byte in
// the first n bytes of src, the string placed into dst will not be
// null-terminated. If the size (in bytes) of src is less than n,
// extra null terminating bytes are appended to dst such that at
// total of n bytes are written. Can produce an invalid utf8
// string if n falls partway through a utf8 codepoint.
utf8_nonnull utf8_weak void *utf8ncpy(void *utf8_restrict dst,
const void *utf8_restrict src, size_t n);
// Similar to utf8dup, except that at most n bytes of src are copied. If src is
// longer than n, only n bytes are copied and a null byte is added.
//
// Returns a new string if successful, 0 otherwise
utf8_nonnull utf8_weak void *utf8ndup(const void *src, size_t n);
// Locates the first occurence in the utf8 string str of any byte in the
// utf8 string accept, or 0 if no match was found.
utf8_nonnull utf8_pure utf8_weak void *utf8pbrk(const void *str,
const void *accept);
// Find the last match of the utf8 codepoint chr in the utf8 string src.
utf8_nonnull utf8_pure utf8_weak void *utf8rchr(const void *src, int chr);
// Number of bytes in the utf8 string str,
// including the null terminating byte.
utf8_nonnull utf8_pure utf8_weak size_t utf8size(const void *str);
// Number of utf8 codepoints in the utf8 string src that consists entirely
// of utf8 codepoints from the utf8 string accept.
utf8_nonnull utf8_pure utf8_weak size_t utf8spn(const void *src,
const void *accept);
// The position of the utf8 string needle in the utf8 string haystack.
utf8_nonnull utf8_pure utf8_weak void *utf8str(const void *haystack,
const void *needle);
// The position of the utf8 string needle in the utf8 string haystack, case
// insensitive.
utf8_nonnull utf8_pure utf8_weak void *utf8casestr(const void *haystack,
const void *needle);
// Return 0 on success, or the position of the invalid
// utf8 codepoint on failure.
utf8_nonnull utf8_pure utf8_weak void *utf8valid(const void *str);
// Sets out_codepoint to the next utf8 codepoint in str, and returns the address
// of the utf8 codepoint after the current one in str.
utf8_nonnull utf8_weak void *
utf8codepoint(const void *utf8_restrict str,
utf8_int32_t *utf8_restrict out_codepoint);
// Returns the size of the given codepoint in bytes.
utf8_weak size_t utf8codepointsize(utf8_int32_t chr);
// Write a codepoint to the given string, and return the address to the next
// place after the written codepoint. Pass how many bytes left in the buffer to
// n. If there is not enough space for the codepoint, this function returns
// null.
utf8_nonnull utf8_weak void *utf8catcodepoint(void *utf8_restrict str,
utf8_int32_t chr, size_t n);
// Returns 1 if the given character is lowercase, or 0 if it is not.
utf8_weak int utf8islower(utf8_int32_t chr);
// Returns 1 if the given character is uppercase, or 0 if it is not.
utf8_weak int utf8isupper(utf8_int32_t chr);
// Transform the given string into all lowercase codepoints.
utf8_nonnull utf8_weak void utf8lwr(void *utf8_restrict str);
// Transform the given string into all uppercase codepoints.
utf8_nonnull utf8_weak void utf8upr(void *utf8_restrict str);
// Make a codepoint lower case if possible.
utf8_weak utf8_int32_t utf8lwrcodepoint(utf8_int32_t cp);
// Make a codepoint upper case if possible.
utf8_weak utf8_int32_t utf8uprcodepoint(utf8_int32_t cp);
#undef utf8_weak
#undef utf8_pure
#undef utf8_nonnull
int utf8casecmp(const void *src1, const void *src2) {
utf8_int32_t src1_cp, src2_cp, src1_orig_cp, src2_orig_cp;
for (;;) {
src1 = utf8codepoint(src1, &src1_cp);
src2 = utf8codepoint(src2, &src2_cp);
// Take a copy of src1 & src2
src1_orig_cp = src1_cp;
src2_orig_cp = src2_cp;
// Lower the srcs if required
src1_cp = utf8lwrcodepoint(src1_cp);
src2_cp = utf8lwrcodepoint(src2_cp);
// Check if the lowered codepoints match
if ((0 == src1_orig_cp) && (0 == src2_orig_cp)) {
return 0;
} else if (src1_cp == src2_cp) {
continue;
}
// If they don't match, then we return which of the original's are less
if (src1_orig_cp < src2_orig_cp) {
return -1;
} else if (src1_orig_cp > src2_orig_cp) {
return 1;
}
}
}
void *utf8cat(void *utf8_restrict dst, const void *utf8_restrict src) {
char *d = (char *)dst;
const char *s = (const char *)src;
// find the null terminating byte in dst
while ('\0' != *d) {
d++;
}
// overwriting the null terminating byte in dst, append src byte-by-byte
while ('\0' != *s) {
*d++ = *s++;
}
// write out a new null terminating byte into dst
*d = '\0';
return dst;
}
void *utf8chr(const void *src, utf8_int32_t chr) {
char c[5] = {'\0', '\0', '\0', '\0', '\0'};
if (0 == chr) {
// being asked to return position of null terminating byte, so
// just run s to the end, and return!
const char *s = (const char *)src;
while ('\0' != *s) {
s++;
}
return (void *)s;
} else if (0 == ((utf8_int32_t)0xffffff80 & chr)) {
// 1-byte/7-bit ascii
// (0b0xxxxxxx)
c[0] = (char)chr;
} else if (0 == ((utf8_int32_t)0xfffff800 & chr)) {
// 2-byte/11-bit utf8 code point
// (0b110xxxxx 0b10xxxxxx)
c[0] = 0xc0 | (char)(chr >> 6);
c[1] = 0x80 | (char)(chr & 0x3f);
} else if (0 == ((utf8_int32_t)0xffff0000 & chr)) {
// 3-byte/16-bit utf8 code point
// (0b1110xxxx 0b10xxxxxx 0b10xxxxxx)
c[0] = 0xe0 | (char)(chr >> 12);
c[1] = 0x80 | (char)((chr >> 6) & 0x3f);
c[2] = 0x80 | (char)(chr & 0x3f);
} else { // if (0 == ((int)0xffe00000 & chr)) {
// 4-byte/21-bit utf8 code point
// (0b11110xxx 0b10xxxxxx 0b10xxxxxx 0b10xxxxxx)
c[0] = 0xf0 | (char)(chr >> 18);
c[1] = 0x80 | (char)((chr >> 12) & 0x3f);
c[2] = 0x80 | (char)((chr >> 6) & 0x3f);
c[3] = 0x80 | (char)(chr & 0x3f);
}
// we've made c into a 2 utf8 codepoint string, one for the chr we are
// seeking, another for the null terminating byte. Now use utf8str to
// search
return utf8str(src, c);
}
int utf8cmp(const void *src1, const void *src2) {
const unsigned char *s1 = (const unsigned char *)src1;
const unsigned char *s2 = (const unsigned char *)src2;
while (('\0' != *s1) || ('\0' != *s2)) {
if (*s1 < *s2) {
return -1;
} else if (*s1 > *s2) {
return 1;
}
s1++;
s2++;
}
// both utf8 strings matched
return 0;
}
int utf8coll(const void *src1, const void *src2);
void *utf8cpy(void *utf8_restrict dst, const void *utf8_restrict src) {
char *d = (char *)dst;
const char *s = (const char *)src;
// overwriting anything previously in dst, write byte-by-byte
// from src
while ('\0' != *s) {
*d++ = *s++;
}
// append null terminating byte
*d = '\0';
return dst;
}
size_t utf8cspn(const void *src, const void *reject) {
const char *s = (const char *)src;
size_t chars = 0;
while ('\0' != *s) {
const char *r = (const char *)reject;
size_t offset = 0;
while ('\0' != *r) {
// checking that if *r is the start of a utf8 codepoint
// (it is not 0b10xxxxxx) and we have successfully matched
// a previous character (0 < offset) - we found a match
if ((0x80 != (0xc0 & *r)) && (0 < offset)) {
return chars;
} else {
if (*r == s[offset]) {
// part of a utf8 codepoint matched, so move our checking
// onwards to the next byte
offset++;
r++;
} else {
// r could be in the middle of an unmatching utf8 code point,
// so we need to march it on to the next character beginning,
do {
r++;
} while (0x80 == (0xc0 & *r));
// reset offset too as we found a mismatch
offset = 0;
}
}
}
// the current utf8 codepoint in src did not match reject, but src
// could have been partway through a utf8 codepoint, so we need to
// march it onto the next utf8 codepoint starting byte
do {
s++;
} while ((0x80 == (0xc0 & *s)));
chars++;
}
return chars;
}
size_t utf8size(const void *str);
void *utf8dup(const void *src) {
const char *s = (const char *)src;
char *n = utf8_null;
// figure out how many bytes (including the terminator) we need to copy first
size_t bytes = utf8size(src);
n = (char *)malloc(bytes);
if (utf8_null == n) {
// out of memory so we bail
return utf8_null;
} else {
bytes = 0;
// copy src byte-by-byte into our new utf8 string
while ('\0' != s[bytes]) {
n[bytes] = s[bytes];
bytes++;
}
// append null terminating byte
n[bytes] = '\0';
return n;
}
}
void *utf8fry(const void *str);
size_t utf8len(const void *str) {
const unsigned char *s = (const unsigned char *)str;
size_t length = 0;
while ('\0' != *s) {
if (0xf0 == (0xf8 & *s)) {
// 4-byte utf8 code point (began with 0b11110xxx)
s += 4;
} else if (0xe0 == (0xf0 & *s)) {
// 3-byte utf8 code point (began with 0b1110xxxx)
s += 3;
} else if (0xc0 == (0xe0 & *s)) {
// 2-byte utf8 code point (began with 0b110xxxxx)
s += 2;
} else { // if (0x00 == (0x80 & *s)) {
// 1-byte ascii (began with 0b0xxxxxxx)
s += 1;
}
// no matter the bytes we marched s forward by, it was
// only 1 utf8 codepoint
length++;
}
return length;
}
int utf8ncasecmp(const void *src1, const void *src2, size_t n) {
utf8_int32_t src1_cp, src2_cp, src1_orig_cp, src2_orig_cp;
do {
const unsigned char *const s1 = (const unsigned char *)src1;
const unsigned char *const s2 = (const unsigned char *)src2;
// first check that we have enough bytes left in n to contain an entire
// codepoint
if (0 == n) {
return 0;
}
if ((1 == n) && ((0xc0 == (0xe0 & *s1)) || (0xc0 == (0xe0 & *s2)))) {
const utf8_int32_t c1 = (0xe0 & *s1);
const utf8_int32_t c2 = (0xe0 & *s2);
if (c1 < c2) {
return -1;
} else if (c1 > c2) {
return 1;
} else {
return 0;
}
}
if ((2 >= n) && ((0xe0 == (0xf0 & *s1)) || (0xe0 == (0xf0 & *s2)))) {
const utf8_int32_t c1 = (0xf0 & *s1);
const utf8_int32_t c2 = (0xf0 & *s2);
if (c1 < c2) {
return -1;
} else if (c1 > c2) {
return 1;
} else {
return 0;
}
}
if ((3 >= n) && ((0xf0 == (0xf8 & *s1)) || (0xf0 == (0xf8 & *s2)))) {
const utf8_int32_t c1 = (0xf8 & *s1);
const utf8_int32_t c2 = (0xf8 & *s2);
if (c1 < c2) {
return -1;
} else if (c1 > c2) {
return 1;
} else {
return 0;
}
}
src1 = utf8codepoint(src1, &src1_cp);
src2 = utf8codepoint(src2, &src2_cp);
n -= utf8codepointsize(src1_cp);
// Take a copy of src1 & src2
src1_orig_cp = src1_cp;
src2_orig_cp = src2_cp;
// Lower srcs if required
src1_cp = utf8lwrcodepoint(src1_cp);
src2_cp = utf8lwrcodepoint(src2_cp);
// Check if the lowered codepoints match
if ((0 == src1_orig_cp) && (0 == src2_orig_cp)) {
return 0;
} else if (src1_cp == src2_cp) {
continue;
}
// If they don't match, then we return which of the original's are less
if (src1_orig_cp < src2_orig_cp) {
return -1;
} else if (src1_orig_cp > src2_orig_cp) {
return 1;
}
} while (0 < n);
// both utf8 strings matched
return 0;
}
void *utf8ncat(void *utf8_restrict dst, const void *utf8_restrict src,
size_t n) {
char *d = (char *)dst;
const char *s = (const char *)src;
// find the null terminating byte in dst
while ('\0' != *d) {
d++;
}
// overwriting the null terminating byte in dst, append src byte-by-byte
// stopping if we run out of space
do {
*d++ = *s++;
} while (('\0' != *s) && (0 != --n));
// write out a new null terminating byte into dst
*d = '\0';
return dst;
}
int utf8ncmp(const void *src1, const void *src2, size_t n) {
const unsigned char *s1 = (const unsigned char *)src1;
const unsigned char *s2 = (const unsigned char *)src2;
while ((('\0' != *s1) || ('\0' != *s2)) && (0 != n--)) {
if (*s1 < *s2) {
return -1;
} else if (*s1 > *s2) {
return 1;
}
s1++;
s2++;
}
// both utf8 strings matched
return 0;
}
void *utf8ncpy(void *utf8_restrict dst, const void *utf8_restrict src,
size_t n) {
char *d = (char *)dst;
const char *s = (const char *)src;
// overwriting anything previously in dst, write byte-by-byte
// from src
do {
*d++ = *s++;
} while (('\0' != *s) && (0 != --n));
// append null terminating byte
while (0 != n) {
*d++ = '\0';
n--;
}
return dst;
}
void *utf8ndup(const void *src, size_t n) {
const char *s = (const char *)src;
char *c = utf8_null;
size_t bytes = 0;
// Find the end of the string or stop when n is reached
while ('\0' != s[bytes] && bytes < n) {
bytes++;
}
// In case bytes is actually less than n, we need to set it
// to be used later in the copy byte by byte.
n = bytes;
c = (char *)malloc(bytes + 1);
if (utf8_null == c) {
// out of memory so we bail
return utf8_null;
}
bytes = 0;
// copy src byte-by-byte into our new utf8 string
while ('\0' != s[bytes] && bytes < n) {
c[bytes] = s[bytes];
bytes++;
}
// append null terminating byte
c[bytes] = '\0';
return c;
}
void *utf8rchr(const void *src, int chr) {
const char *s = (const char *)src;
const char *match = utf8_null;
char c[5] = {'\0', '\0', '\0', '\0', '\0'};
if (0 == chr) {
// being asked to return position of null terminating byte, so
// just run s to the end, and return!
while ('\0' != *s) {
s++;
}
return (void *)s;
} else if (0 == ((int)0xffffff80 & chr)) {
// 1-byte/7-bit ascii
// (0b0xxxxxxx)
c[0] = (char)chr;
} else if (0 == ((int)0xfffff800 & chr)) {
// 2-byte/11-bit utf8 code point
// (0b110xxxxx 0b10xxxxxx)
c[0] = 0xc0 | (char)(chr >> 6);
c[1] = 0x80 | (char)(chr & 0x3f);
} else if (0 == ((int)0xffff0000 & chr)) {
// 3-byte/16-bit utf8 code point
// (0b1110xxxx 0b10xxxxxx 0b10xxxxxx)
c[0] = 0xe0 | (char)(chr >> 12);
c[1] = 0x80 | (char)((chr >> 6) & 0x3f);
c[2] = 0x80 | (char)(chr & 0x3f);
} else { // if (0 == ((int)0xffe00000 & chr)) {
// 4-byte/21-bit utf8 code point
// (0b11110xxx 0b10xxxxxx 0b10xxxxxx 0b10xxxxxx)
c[0] = 0xf0 | (char)(chr >> 18);
c[1] = 0x80 | (char)((chr >> 12) & 0x3f);
c[2] = 0x80 | (char)((chr >> 6) & 0x3f);
c[3] = 0x80 | (char)(chr & 0x3f);
}
// we've created a 2 utf8 codepoint string in c that is
// the utf8 character asked for by chr, and a null
// terminating byte
while ('\0' != *s) {
size_t offset = 0;
while (s[offset] == c[offset]) {
offset++;
}
if ('\0' == c[offset]) {
// we found a matching utf8 code point
match = s;
s += offset;
} else {
s += offset;
// need to march s along to next utf8 codepoint start
// (the next byte that doesn't match 0b10xxxxxx)
if ('\0' != *s) {
do {
s++;
} while (0x80 == (0xc0 & *s));
}
}
}
// return the last match we found (or 0 if no match was found)
return (void *)match;
}
void *utf8pbrk(const void *str, const void *accept) {
const char *s = (const char *)str;
while ('\0' != *s) {
const char *a = (const char *)accept;
size_t offset = 0;
while ('\0' != *a) {
// checking that if *a is the start of a utf8 codepoint
// (it is not 0b10xxxxxx) and we have successfully matched
// a previous character (0 < offset) - we found a match
if ((0x80 != (0xc0 & *a)) && (0 < offset)) {
return (void *)s;
} else {
if (*a == s[offset]) {
// part of a utf8 codepoint matched, so move our checking
// onwards to the next byte
offset++;
a++;
} else {
// r could be in the middle of an unmatching utf8 code point,
// so we need to march it on to the next character beginning,
do {
a++;
} while (0x80 == (0xc0 & *a));
// reset offset too as we found a mismatch
offset = 0;
}
}
}
// we found a match on the last utf8 codepoint
if (0 < offset) {
return (void *)s;
}
// the current utf8 codepoint in src did not match accept, but src
// could have been partway through a utf8 codepoint, so we need to
// march it onto the next utf8 codepoint starting byte
do {
s++;
} while ((0x80 == (0xc0 & *s)));
}
return utf8_null;
}
size_t utf8size(const void *str) {
const char *s = (const char *)str;
size_t size = 0;
while ('\0' != s[size]) {
size++;
}
// we are including the null terminating byte in the size calculation
size++;
return size;
}
size_t utf8spn(const void *src, const void *accept) {
const char *s = (const char *)src;
size_t chars = 0;
while ('\0' != *s) {
const char *a = (const char *)accept;
size_t offset = 0;
while ('\0' != *a) {
// checking that if *r is the start of a utf8 codepoint
// (it is not 0b10xxxxxx) and we have successfully matched
// a previous character (0 < offset) - we found a match
if ((0x80 != (0xc0 & *a)) && (0 < offset)) {
// found a match, so increment the number of utf8 codepoints
// that have matched and stop checking whether any other utf8
// codepoints in a match
chars++;
s += offset;
break;
} else {
if (*a == s[offset]) {
offset++;
a++;
} else {
// a could be in the middle of an unmatching utf8 codepoint,
// so we need to march it on to the next character beginning,
do {
a++;
} while (0x80 == (0xc0 & *a));
// reset offset too as we found a mismatch
offset = 0;
}
}
}
// if a got to its terminating null byte, then we didn't find a match.
// Return the current number of matched utf8 codepoints
if ('\0' == *a) {
return chars;
}
}
return chars;
}
void *utf8str(const void *haystack, const void *needle) {
const char *h = (const char *)haystack;
// if needle has no utf8 codepoints before the null terminating
// byte then return haystack
if ('\0' == *((const char *)needle)) {
return (void *)haystack;
}
while ('\0' != *h) {
const char *maybeMatch = h;
const char *n = (const char *)needle;
while (*h == *n && (*h != '\0' && *n != '\0')) {
n++;
h++;
}
if ('\0' == *n) {
// we found the whole utf8 string for needle in haystack at
// maybeMatch, so return it
return (void *)maybeMatch;
} else {
// h could be in the middle of an unmatching utf8 codepoint,
// so we need to march it on to the next character beginning,
if ('\0' != *h) {
do {
h++;
} while (0x80 == (0xc0 & *h));
}
}
}
// no match
return utf8_null;
}
void *utf8casestr(const void *haystack, const void *needle) {
const void *h = haystack;
// if needle has no utf8 codepoints before the null terminating
// byte then return haystack
if ('\0' == *((const char *)needle)) {
return (void *)haystack;
}
for (;;) {
const void *maybeMatch = h;
const void *n = needle;
utf8_int32_t h_cp, n_cp;
h = utf8codepoint(h, &h_cp);
n = utf8codepoint(n, &n_cp);
while ((0 != h_cp) && (0 != n_cp)) {
h_cp = utf8lwrcodepoint(h_cp);
n_cp = utf8lwrcodepoint(n_cp);
// if we find a mismatch, bail out!
if (h_cp != n_cp) {
break;
}
h = utf8codepoint(h, &h_cp);
n = utf8codepoint(n, &n_cp);
}
if (0 == n_cp) {
// we found the whole utf8 string for needle in haystack at
// maybeMatch, so return it
return (void *)maybeMatch;
}
if (0 == h_cp) {
// no match
return utf8_null;
}
}
}
void *utf8valid(const void *str) {
const char *s = (const char *)str;
while ('\0' != *s) {
if (0xf0 == (0xf8 & *s)) {
// ensure each of the 3 following bytes in this 4-byte
// utf8 codepoint began with 0b10xxxxxx
if ((0x80 != (0xc0 & s[1])) || (0x80 != (0xc0 & s[2])) ||
(0x80 != (0xc0 & s[3]))) {
return (void *)s;
}
// ensure that our utf8 codepoint ended after 4 bytes
if (0x80 == (0xc0 & s[4])) {
return (void *)s;
}
// ensure that the top 5 bits of this 4-byte utf8
// codepoint were not 0, as then we could have used
// one of the smaller encodings
if ((0 == (0x07 & s[0])) && (0 == (0x30 & s[1]))) {
return (void *)s;
}
// 4-byte utf8 code point (began with 0b11110xxx)
s += 4;
} else if (0xe0 == (0xf0 & *s)) {
// ensure each of the 2 following bytes in this 3-byte
// utf8 codepoint began with 0b10xxxxxx
if ((0x80 != (0xc0 & s[1])) || (0x80 != (0xc0 & s[2]))) {
return (void *)s;
}
// ensure that our utf8 codepoint ended after 3 bytes
if (0x80 == (0xc0 & s[3])) {
return (void *)s;
}
// ensure that the top 5 bits of this 3-byte utf8
// codepoint were not 0, as then we could have used
// one of the smaller encodings
if ((0 == (0x0f & s[0])) && (0 == (0x20 & s[1]))) {
return (void *)s;
}
// 3-byte utf8 code point (began with 0b1110xxxx)
s += 3;
} else if (0xc0 == (0xe0 & *s)) {
// ensure the 1 following byte in this 2-byte
// utf8 codepoint began with 0b10xxxxxx
if (0x80 != (0xc0 & s[1])) {
return (void *)s;
}
// ensure that our utf8 codepoint ended after 2 bytes
if (0x80 == (0xc0 & s[2])) {
return (void *)s;
}
// ensure that the top 4 bits of this 2-byte utf8
// codepoint were not 0, as then we could have used
// one of the smaller encodings
if (0 == (0x1e & s[0])) {
return (void *)s;
}
// 2-byte utf8 code point (began with 0b110xxxxx)
s += 2;
} else if (0x00 == (0x80 & *s)) {
// 1-byte ascii (began with 0b0xxxxxxx)
s += 1;
} else {
// we have an invalid 0b1xxxxxxx utf8 code point entry
return (void *)s;
}
}
return utf8_null;
}
void *utf8codepoint(const void *utf8_restrict str,
utf8_int32_t *utf8_restrict out_codepoint) {
const char *s = (const char *)str;
if (0xf0 == (0xf8 & s[0])) {
// 4 byte utf8 codepoint
*out_codepoint = ((0x07 & s[0]) << 18) | ((0x3f & s[1]) << 12) |
((0x3f & s[2]) << 6) | (0x3f & s[3]);
s += 4;
} else if (0xe0 == (0xf0 & s[0])) {
// 3 byte utf8 codepoint
*out_codepoint =
((0x0f & s[0]) << 12) | ((0x3f & s[1]) << 6) | (0x3f & s[2]);
s += 3;
} else if (0xc0 == (0xe0 & s[0])) {
// 2 byte utf8 codepoint
*out_codepoint = ((0x1f & s[0]) << 6) | (0x3f & s[1]);
s += 2;
} else {
// 1 byte utf8 codepoint otherwise
*out_codepoint = s[0];
s += 1;
}
return (void *)s;
}
size_t utf8codepointsize(utf8_int32_t chr) {
if (0 == ((utf8_int32_t)0xffffff80 & chr)) {
return 1;
} else if (0 == ((utf8_int32_t)0xfffff800 & chr)) {
return 2;
} else if (0 == ((utf8_int32_t)0xffff0000 & chr)) {
return 3;
} else { // if (0 == ((int)0xffe00000 & chr)) {
return 4;
}
}
void *utf8catcodepoint(void *utf8_restrict str, utf8_int32_t chr, size_t n) {
char *s = (char *)str;
if (0 == ((utf8_int32_t)0xffffff80 & chr)) {
// 1-byte/7-bit ascii
// (0b0xxxxxxx)
if (n < 1) {
return utf8_null;
}
s[0] = (char)chr;
s += 1;
} else if (0 == ((utf8_int32_t)0xfffff800 & chr)) {
// 2-byte/11-bit utf8 code point
// (0b110xxxxx 0b10xxxxxx)
if (n < 2) {
return utf8_null;
}
s[0] = 0xc0 | (char)(chr >> 6);
s[1] = 0x80 | (char)(chr & 0x3f);
s += 2;
} else if (0 == ((utf8_int32_t)0xffff0000 & chr)) {
// 3-byte/16-bit utf8 code point
// (0b1110xxxx 0b10xxxxxx 0b10xxxxxx)
if (n < 3) {
return utf8_null;
}
s[0] = 0xe0 | (char)(chr >> 12);
s[1] = 0x80 | (char)((chr >> 6) & 0x3f);
s[2] = 0x80 | (char)(chr & 0x3f);
s += 3;
} else { // if (0 == ((int)0xffe00000 & chr)) {
// 4-byte/21-bit utf8 code point
// (0b11110xxx 0b10xxxxxx 0b10xxxxxx 0b10xxxxxx)
if (n < 4) {
return utf8_null;
}
s[0] = 0xf0 | (char)(chr >> 18);
s[1] = 0x80 | (char)((chr >> 12) & 0x3f);
s[2] = 0x80 | (char)((chr >> 6) & 0x3f);
s[3] = 0x80 | (char)(chr & 0x3f);
s += 4;
}
return s;
}
int utf8islower(utf8_int32_t chr) { return chr != utf8uprcodepoint(chr); }
int utf8isupper(utf8_int32_t chr) { return chr != utf8lwrcodepoint(chr); }
void utf8lwr(void *utf8_restrict str) {
void *p, *pn;
utf8_int32_t cp;
p = (char *)str;
pn = utf8codepoint(p, &cp);
while (cp != 0) {
const utf8_int32_t lwr_cp = utf8lwrcodepoint(cp);
const size_t size = utf8codepointsize(lwr_cp);
if (lwr_cp != cp) {
utf8catcodepoint(p, lwr_cp, size);
}
p = pn;
pn = utf8codepoint(p, &cp);
}
}
void utf8upr(void *utf8_restrict str) {
void *p, *pn;
utf8_int32_t cp;
p = (char *)str;
pn = utf8codepoint(p, &cp);
while (cp != 0) {
const utf8_int32_t lwr_cp = utf8uprcodepoint(cp);
const size_t size = utf8codepointsize(lwr_cp);
if (lwr_cp != cp) {
utf8catcodepoint(p, lwr_cp, size);
}
p = pn;
pn = utf8codepoint(p, &cp);
}
}
utf8_int32_t utf8lwrcodepoint(utf8_int32_t cp) {
if (((0x0041 <= cp) && (0x005a >= cp)) ||
((0x00c0 <= cp) && (0x00d6 >= cp)) ||
((0x00d8 <= cp) && (0x00de >= cp)) ||
((0x0391 <= cp) && (0x03a1 >= cp)) ||
((0x03a3 <= cp) && (0x03ab >= cp))) {
cp += 32;
} else if (((0x0100 <= cp) && (0x012f >= cp)) ||
((0x0132 <= cp) && (0x0137 >= cp)) ||
((0x014a <= cp) && (0x0177 >= cp)) ||
((0x0182 <= cp) && (0x0185 >= cp)) ||
((0x01a0 <= cp) && (0x01a5 >= cp)) ||
((0x01de <= cp) && (0x01ef >= cp)) ||
((0x01f8 <= cp) && (0x021f >= cp)) ||
((0x0222 <= cp) && (0x0233 >= cp)) ||
((0x0246 <= cp) && (0x024f >= cp)) ||
((0x03d8 <= cp) && (0x03ef >= cp))) {
cp |= 0x1;
} else if (((0x0139 <= cp) && (0x0148 >= cp)) ||
((0x0179 <= cp) && (0x017e >= cp)) ||
((0x01af <= cp) && (0x01b0 >= cp)) ||
((0x01b3 <= cp) && (0x01b6 >= cp)) ||
((0x01cd <= cp) && (0x01dc >= cp))) {
cp += 1;
cp &= ~0x1;
} else {
switch (cp) {
default: break;
case 0x0178: cp = 0x00ff; break;
case 0x0243: cp = 0x0180; break;
case 0x018e: cp = 0x01dd; break;
case 0x023d: cp = 0x019a; break;
case 0x0220: cp = 0x019e; break;
case 0x01b7: cp = 0x0292; break;
case 0x01c4: cp = 0x01c6; break;
case 0x01c7: cp = 0x01c9; break;
case 0x01ca: cp = 0x01cc; break;
case 0x01f1: cp = 0x01f3; break;
case 0x01f7: cp = 0x01bf; break;
case 0x0187: cp = 0x0188; break;
case 0x018b: cp = 0x018c; break;
case 0x0191: cp = 0x0192; break;
case 0x0198: cp = 0x0199; break;
case 0x01a7: cp = 0x01a8; break;
case 0x01ac: cp = 0x01ad; break;
case 0x01af: cp = 0x01b0; break;
case 0x01b8: cp = 0x01b9; break;
case 0x01bc: cp = 0x01bd; break;
case 0x01f4: cp = 0x01f5; break;
case 0x023b: cp = 0x023c; break;
case 0x0241: cp = 0x0242; break;
case 0x03fd: cp = 0x037b; break;
case 0x03fe: cp = 0x037c; break;
case 0x03ff: cp = 0x037d; break;
case 0x037f: cp = 0x03f3; break;
case 0x0386: cp = 0x03ac; break;
case 0x0388: cp = 0x03ad; break;
case 0x0389: cp = 0x03ae; break;
case 0x038a: cp = 0x03af; break;
case 0x038c: cp = 0x03cc; break;
case 0x038e: cp = 0x03cd; break;
case 0x038f: cp = 0x03ce; break;
case 0x0370: cp = 0x0371; break;
case 0x0372: cp = 0x0373; break;
case 0x0376: cp = 0x0377; break;
case 0x03f4: cp = 0x03d1; break;
case 0x03cf: cp = 0x03d7; break;
case 0x03f9: cp = 0x03f2; break;
case 0x03f7: cp = 0x03f8; break;
case 0x03fa: cp = 0x03fb; break;
};
}
return cp;
}
utf8_int32_t utf8uprcodepoint(utf8_int32_t cp) {
if (((0x0061 <= cp) && (0x007a >= cp)) ||
((0x00e0 <= cp) && (0x00f6 >= cp)) ||
((0x00f8 <= cp) && (0x00fe >= cp)) ||
((0x03b1 <= cp) && (0x03c1 >= cp)) ||
((0x03c3 <= cp) && (0x03cb >= cp))) {
cp -= 32;
} else if (((0x0100 <= cp) && (0x012f >= cp)) ||
((0x0132 <= cp) && (0x0137 >= cp)) ||
((0x014a <= cp) && (0x0177 >= cp)) ||
((0x0182 <= cp) && (0x0185 >= cp)) ||
((0x01a0 <= cp) && (0x01a5 >= cp)) ||
((0x01de <= cp) && (0x01ef >= cp)) ||
((0x01f8 <= cp) && (0x021f >= cp)) ||
((0x0222 <= cp) && (0x0233 >= cp)) ||
((0x0246 <= cp) && (0x024f >= cp)) ||
((0x03d8 <= cp) && (0x03ef >= cp))) {
cp &= ~0x1;
} else if (((0x0139 <= cp) && (0x0148 >= cp)) ||
((0x0179 <= cp) && (0x017e >= cp)) ||
((0x01af <= cp) && (0x01b0 >= cp)) ||
((0x01b3 <= cp) && (0x01b6 >= cp)) ||
((0x01cd <= cp) && (0x01dc >= cp))) {
cp -= 1;
cp |= 0x1;
} else {
switch (cp) {
default: break;
case 0x00ff: cp = 0x0178; break;
case 0x0180: cp = 0x0243; break;
case 0x01dd: cp = 0x018e; break;
case 0x019a: cp = 0x023d; break;
case 0x019e: cp = 0x0220; break;
case 0x0292: cp = 0x01b7; break;
case 0x01c6: cp = 0x01c4; break;
case 0x01c9: cp = 0x01c7; break;
case 0x01cc: cp = 0x01ca; break;
case 0x01f3: cp = 0x01f1; break;
case 0x01bf: cp = 0x01f7; break;
case 0x0188: cp = 0x0187; break;
case 0x018c: cp = 0x018b; break;
case 0x0192: cp = 0x0191; break;
case 0x0199: cp = 0x0198; break;
case 0x01a8: cp = 0x01a7; break;
case 0x01ad: cp = 0x01ac; break;
case 0x01b0: cp = 0x01af; break;
case 0x01b9: cp = 0x01b8; break;
case 0x01bd: cp = 0x01bc; break;
case 0x01f5: cp = 0x01f4; break;
case 0x023c: cp = 0x023b; break;
case 0x0242: cp = 0x0241; break;
case 0x037b: cp = 0x03fd; break;
case 0x037c: cp = 0x03fe; break;
case 0x037d: cp = 0x03ff; break;
case 0x03f3: cp = 0x037f; break;
case 0x03ac: cp = 0x0386; break;
case 0x03ad: cp = 0x0388; break;
case 0x03ae: cp = 0x0389; break;
case 0x03af: cp = 0x038a; break;
case 0x03cc: cp = 0x038c; break;
case 0x03cd: cp = 0x038e; break;
case 0x03ce: cp = 0x038f; break;
case 0x0371: cp = 0x0370; break;
case 0x0373: cp = 0x0372; break;
case 0x0377: cp = 0x0376; break;
case 0x03d1: cp = 0x03f4; break;
case 0x03d7: cp = 0x03cf; break;
case 0x03f2: cp = 0x03f9; break;
case 0x03f8: cp = 0x03f7; break;
case 0x03fb: cp = 0x03fa; break;
};
}
return cp;
}
#undef utf8_restrict
#undef utf8_null
#ifdef __cplusplus
} // extern "C"
#endif
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
#endif // SHEREDOM_UTF8_H_INCLUDED
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/crypt_commoncrypto.c
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <CommonCrypto/CommonCrypto.h>
#include "ntlm.h"
#include "crypt.h"
bool ntlm_crypt_init(ntlm_client *ntlm)
{
memset(&ntlm->crypt_ctx, 0, sizeof(ntlm_crypt_ctx));
return true;
}
bool ntlm_random_bytes(
unsigned char *out,
ntlm_client *ntlm,
size_t len)
{
int fd, ret;
size_t total = 0;
if ((fd = open("/dev/urandom", O_RDONLY)) < 0) {
ntlm_client_set_errmsg(ntlm, strerror(errno));
return false;
}
while (total < len) {
if ((ret = read(fd, out, (len - total))) < 0) {
ntlm_client_set_errmsg(ntlm, strerror(errno));
return false;
} else if (ret == 0) {
ntlm_client_set_errmsg(ntlm, "unexpected eof on random device");
return false;
}
total += ret;
}
close(fd);
return true;
}
bool ntlm_des_encrypt(
ntlm_des_block *out,
ntlm_client *ntlm,
ntlm_des_block *plaintext,
ntlm_des_block *key)
{
size_t written;
NTLM_UNUSED(ntlm);
CCCryptorStatus result = CCCrypt(kCCEncrypt,
kCCAlgorithmDES, kCCOptionECBMode,
key, sizeof(ntlm_des_block), NULL,
plaintext, sizeof(ntlm_des_block),
out, sizeof(ntlm_des_block), &written);
return (result == kCCSuccess) ? true : false;
}
bool ntlm_md4_digest(
unsigned char out[CRYPT_MD4_DIGESTSIZE],
ntlm_client *ntlm,
const unsigned char *in,
size_t in_len)
{
NTLM_UNUSED(ntlm);
return !!CC_MD4(in, in_len, out);
}
bool ntlm_hmac_md5_init(
ntlm_client *ntlm,
const unsigned char *key,
size_t key_len)
{
CCHmacInit(&ntlm->crypt_ctx.hmac, kCCHmacAlgMD5, key, key_len);
return true;
}
bool ntlm_hmac_md5_update(
ntlm_client *ntlm,
const unsigned char *data,
size_t data_len)
{
CCHmacUpdate(&ntlm->crypt_ctx.hmac, data, data_len);
return true;
}
bool ntlm_hmac_md5_final(
unsigned char *out,
size_t *out_len,
ntlm_client *ntlm)
{
if (*out_len < CRYPT_MD5_DIGESTSIZE)
return false;
CCHmacFinal(&ntlm->crypt_ctx.hmac, out);
*out_len = CRYPT_MD5_DIGESTSIZE;
return true;
}
void ntlm_crypt_shutdown(ntlm_client *ntlm)
{
NTLM_UNUSED(ntlm);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/unicode_builtin.c
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#include <stdlib.h>
#include <stdint.h>
#include "ntlm.h"
#include "unicode.h"
#include "compat.h"
typedef unsigned int UTF32; /* at least 32 bits */
typedef unsigned short UTF16; /* at least 16 bits */
typedef unsigned char UTF8; /* typically 8 bits */
/* Some fundamental constants */
#define UNI_REPLACEMENT_CHAR (UTF32)0x0000FFFD
#define UNI_MAX_BMP (UTF32)0x0000FFFF
#define UNI_MAX_UTF16 (UTF32)0x0010FFFF
#define UNI_MAX_UTF32 (UTF32)0x7FFFFFFF
#define UNI_MAX_LEGAL_UTF32 (UTF32)0x0010FFFF
#define UNI_MAX_UTF8_BYTES_PER_CODE_POINT 4
typedef enum {
conversionOK, /* conversion successful */
sourceExhausted, /* partial character in source, but hit end */
targetExhausted, /* insuff. room in target for conversion */
sourceIllegal /* source sequence is illegal/malformed */
} ConversionResult;
typedef enum {
strictConversion = 0,
lenientConversion
} ConversionFlags;
static const int halfShift = 10; /* used for shifting by 10 bits */
static const UTF32 halfBase = 0x0010000UL;
static const UTF32 halfMask = 0x3FFUL;
#define UNI_SUR_HIGH_START (UTF32)0xD800
#define UNI_SUR_HIGH_END (UTF32)0xDBFF
#define UNI_SUR_LOW_START (UTF32)0xDC00
#define UNI_SUR_LOW_END (UTF32)0xDFFF
#define false 0
#define true 1
/* --------------------------------------------------------------------- */
/*
* Index into the table below with the first byte of a UTF-8 sequence to
* get the number of trailing bytes that are supposed to follow it.
* Note that *legal* UTF-8 values can't have 4 or 5-bytes. The table is
* left as-is for anyone who may want to do such conversion, which was
* allowed in earlier algorithms.
*/
static const char trailingBytesForUTF8[256] = {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
};
/*
* Magic values subtracted from a buffer value during UTF8 conversion.
* This table contains as many values as there might be trailing bytes
* in a UTF-8 sequence.
*/
static const UTF32 offsetsFromUTF8[6] = {
0x00000000UL, 0x00003080UL, 0x000E2080UL,
0x03C82080UL, 0xFA082080UL, 0x82082080UL };
/*
* Once the bits are split out into bytes of UTF-8, this is a mask OR-ed
* into the first byte, depending on how many bytes follow. There are
* as many entries in this table as there are UTF-8 sequence types.
* (I.e., one byte sequence, two byte... etc.). Remember that sequencs
* for *legal* UTF-8 will be 4 or fewer bytes total.
*/
static const UTF8 firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
/* --------------------------------------------------------------------- */
/* The interface converts a whole buffer to avoid function-call overhead.
* Constants have been gathered. Loops & conditionals have been removed as
* much as possible for efficiency, in favor of drop-through switches.
* (See "Note A" at the bottom of the file for equivalent code.)
* If your compiler supports it, the "isLegalUTF8" call can be turned
* into an inline function.
*/
static ConversionResult ConvertUTF16toUTF8 (
const UTF16** sourceStart, const UTF16* sourceEnd,
UTF8** targetStart, UTF8* targetEnd, ConversionFlags flags) {
ConversionResult result = conversionOK;
const UTF16* source = *sourceStart;
UTF8* target = *targetStart;
while (source < sourceEnd) {
UTF32 ch;
unsigned short bytesToWrite = 0;
const UTF32 byteMask = 0xBF;
const UTF32 byteMark = 0x80;
const UTF16* oldSource = source; /* In case we have to back up because of target overflow. */
ch = *source++;
/* If we have a surrogate pair, convert to UTF32 first. */
if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {
/* If the 16 bits following the high surrogate are in the source buffer... */
if (source < sourceEnd) {
UTF32 ch2 = *source;
/* If it's a low surrogate, convert to UTF32. */
if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END) {
ch = ((ch - UNI_SUR_HIGH_START) << halfShift)
+ (ch2 - UNI_SUR_LOW_START) + halfBase;
++source;
} else if (flags == strictConversion) { /* it's an unpaired high surrogate */
--source; /* return to the illegal value itself */
result = sourceIllegal;
break;
}
} else { /* We don't have the 16 bits following the high surrogate. */
--source; /* return to the high surrogate */
result = sourceExhausted;
break;
}
} else if (flags == strictConversion) {
/* UTF-16 surrogate values are illegal in UTF-32 */
if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {
--source; /* return to the illegal value itself */
result = sourceIllegal;
break;
}
}
/* Figure out how many bytes the result will require */
if (ch < (UTF32)0x80) { bytesToWrite = 1;
} else if (ch < (UTF32)0x800) { bytesToWrite = 2;
} else if (ch < (UTF32)0x10000) { bytesToWrite = 3;
} else if (ch < (UTF32)0x110000) { bytesToWrite = 4;
} else { bytesToWrite = 3;
ch = UNI_REPLACEMENT_CHAR;
}
target += bytesToWrite;
if (target > targetEnd) {
source = oldSource; /* Back up source pointer! */
target -= bytesToWrite; result = targetExhausted; break;
}
switch (bytesToWrite) { /* note: everything falls through. */
case 4: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
case 3: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
case 2: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
case 1: *--target = (UTF8)(ch | firstByteMark[bytesToWrite]);
}
target += bytesToWrite;
}
*sourceStart = source;
*targetStart = target;
return result;
}
/* --------------------------------------------------------------------- */
/*
* Utility routine to tell whether a sequence of bytes is legal UTF-8.
* This must be called with the length pre-determined by the first byte.
* If not calling this from ConvertUTF8to*, then the length can be set by:
* length = trailingBytesForUTF8[*source]+1;
* and the sequence is illegal right away if there aren't that many bytes
* available.
* If presented with a length > 4, this returns false. The Unicode
* definition of UTF-8 goes up to 4-byte sequences.
*/
static inline bool isLegalUTF8(const UTF8 *source, int length) {
UTF8 a;
const UTF8 *srcptr = source+length;
switch (length) {
default: return false;
/* Everything else falls through when "true"... */
case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
case 2: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
switch (*source) {
/* no fall-through in this inner switch */
case 0xE0: if (a < 0xA0) return false; break;
case 0xED: if (a > 0x9F) return false; break;
case 0xF0: if (a < 0x90) return false; break;
case 0xF4: if (a > 0x8F) return false; break;
default: if (a < 0x80) return false;
}
case 1: if (*source >= 0x80 && *source < 0xC2) return false;
}
if (*source > 0xF4) return false;
return true;
}
static ConversionResult ConvertUTF8toUTF16 (
const UTF8** sourceStart, const UTF8* sourceEnd,
UTF16** targetStart, UTF16* targetEnd, ConversionFlags flags) {
ConversionResult result = conversionOK;
const UTF8* source = *sourceStart;
UTF16* target = *targetStart;
while (source < sourceEnd) {
UTF32 ch = 0;
unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
if (extraBytesToRead >= sourceEnd - source) {
result = sourceExhausted; break;
}
/* Do this check whether lenient or strict */
if (!isLegalUTF8(source, extraBytesToRead+1)) {
result = sourceIllegal;
break;
}
/*
* The cases all fall through. See "Note A" below.
*/
switch (extraBytesToRead) {
case 5: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
case 3: ch += *source++; ch <<= 6;
case 2: ch += *source++; ch <<= 6;
case 1: ch += *source++; ch <<= 6;
case 0: ch += *source++;
}
ch -= offsetsFromUTF8[extraBytesToRead];
if (target >= targetEnd) {
source -= (extraBytesToRead+1); /* Back up source pointer! */
result = targetExhausted; break;
}
if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
/* UTF-16 surrogate values are illegal in UTF-32 */
if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
if (flags == strictConversion) {
source -= (extraBytesToRead+1); /* return to the illegal value itself */
result = sourceIllegal;
break;
} else {
*target++ = UNI_REPLACEMENT_CHAR;
}
} else {
*target++ = (UTF16)ch; /* normal case */
}
} else if (ch > UNI_MAX_UTF16) {
if (flags == strictConversion) {
result = sourceIllegal;
source -= (extraBytesToRead+1); /* return to the start */
break; /* Bail out; shouldn't continue */
} else {
*target++ = UNI_REPLACEMENT_CHAR;
}
} else {
/* target is a character in range 0xFFFF - 0x10FFFF. */
if (target + 1 >= targetEnd) {
source -= (extraBytesToRead+1); /* Back up source pointer! */
result = targetExhausted; break;
}
ch -= halfBase;
*target++ = (UTF16)((ch >> halfShift) + UNI_SUR_HIGH_START);
*target++ = (UTF16)((ch & halfMask) + UNI_SUR_LOW_START);
}
}
*sourceStart = source;
*targetStart = target;
return result;
}
bool ntlm_unicode_init(ntlm_client *ntlm)
{
NTLM_UNUSED(ntlm);
return true;
}
typedef enum {
unicode_builtin_utf8_to_16,
unicode_builtin_utf16_to_8
} unicode_builtin_encoding_direction;
static inline bool unicode_builtin_encoding_convert(
char **converted,
size_t *converted_len,
ntlm_client *ntlm,
const char *string,
size_t string_len,
unicode_builtin_encoding_direction direction)
{
const char *in_start, *in_end;
char *out, *out_start, *out_end, *new_out;
size_t out_size, out_len;
bool success = false;
ConversionResult result;
*converted = NULL;
*converted_len = 0;
in_start = string;
in_end = in_start + string_len;
/*
* When translating UTF8 to UTF16, these strings are only used
* internally, and we obey the given length, so we can simply
* use a buffer that is 2x the size. Add an extra byte to NUL
* terminate the results (two bytes for UTF16).
*/
if (direction == unicode_builtin_utf8_to_16)
out_size = (string_len * 2 + 2);
else
out_size = (string_len / 2 + 1);
/* Round to the nearest multiple of 8 */
out_size = (out_size + 7) & ~7;
if ((out = malloc(out_size)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return false;
}
out_start = out;
out_end = out_start + out_size;
/* Make room for NUL termination */
if (direction == unicode_builtin_utf16_to_8)
out_end--;
while (true) {
if (direction == unicode_builtin_utf8_to_16)
result = ConvertUTF8toUTF16(
(const UTF8 **)&in_start, (UTF8 *)in_end,
(UTF16 **)&out_start, (UTF16 *)out_end, strictConversion);
else
result = ConvertUTF16toUTF8(
(const UTF16 **)&in_start, (UTF16 *)in_end,
(UTF8 **)&out_start, (UTF8 *)out_end, lenientConversion);
switch (result) {
case conversionOK:
success = true;
goto done;
case sourceExhausted:
ntlm_client_set_errmsg(ntlm,
"invalid unicode string; trailing data remains");
goto done;
case targetExhausted:
break;
case sourceIllegal:
ntlm_client_set_errmsg(ntlm,
"invalid unicode string; trailing data remains");
goto done;
default:
ntlm_client_set_errmsg(ntlm,
"unknown unicode conversion failure");
goto done;
}
/* Grow buffer size by 1.5 (rounded up to a multiple of 8) */
out_size = ((((out_size << 1) - (out_size >> 1)) + 7) & ~7);
if (out_size > NTLM_UNICODE_MAX_LEN) {
ntlm_client_set_errmsg(ntlm, "unicode conversion too large");
goto done;
}
if ((new_out = realloc(out, out_size)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
goto done;
}
out_len = out_start - out;
out = new_out;
out_start = new_out + out_len;
out_end = out + out_size;
/* Make room for NUL termination */
out_end -= (direction == unicode_builtin_utf8_to_16) ? 2 : 1;
}
done:
if (!success) {
free(out);
return false;
}
out_len = (out_start - out);
/* NUL terminate */
out[out_len] = '\0';
if (direction == unicode_builtin_utf8_to_16)
out[out_len+1] = '\0';
*converted = out;
*converted_len = out_len;
return true;
}
bool ntlm_unicode_utf8_to_16(
char **converted,
size_t *converted_len,
ntlm_client *client,
const char *string,
size_t string_len)
{
return unicode_builtin_encoding_convert(converted, converted_len,
client, string, string_len, unicode_builtin_utf8_to_16);
}
bool ntlm_unicode_utf16_to_8(
char **converted,
size_t *converted_len,
ntlm_client *client,
const char *string,
size_t string_len)
{
return unicode_builtin_encoding_convert(converted, converted_len,
client, string, string_len, unicode_builtin_utf16_to_8);
}
void ntlm_unicode_shutdown(ntlm_client *ntlm)
{
NTLM_UNUSED(ntlm);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/crypt_openssl.c
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#include <stdlib.h>
#include <string.h>
#ifdef CRYPT_OPENSSL_DYNAMIC
# include <dlfcn.h>
#else
# include <openssl/rand.h>
# include <openssl/des.h>
# include <openssl/md4.h>
# include <openssl/hmac.h>
# include <openssl/err.h>
#endif
#include "ntlm.h"
#include "compat.h"
#include "util.h"
#include "crypt.h"
#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(CRYPT_OPENSSL_DYNAMIC)
static inline HMAC_CTX *HMAC_CTX_new(void)
{
return calloc(1, sizeof(HMAC_CTX));
}
static inline int HMAC_CTX_reset(HMAC_CTX *ctx)
{
ntlm_memzero(ctx, sizeof(HMAC_CTX));
return 1;
}
static inline void HMAC_CTX_free(HMAC_CTX *ctx)
{
free(ctx);
}
#endif
#if OPENSSL_VERSION_NUMBER >= 0x10100000L || defined(CRYPT_OPENSSL_DYNAMIC)
static inline void HMAC_CTX_cleanup(HMAC_CTX *ctx)
{
NTLM_UNUSED(ctx);
}
#endif
#ifdef CRYPT_OPENSSL_DYNAMIC
static bool ntlm_crypt_init_functions(ntlm_client *ntlm)
{
void *handle;
if ((handle = dlopen("libssl.so.1.1", RTLD_NOW)) == NULL &&
(handle = dlopen("libssl.1.1.dylib", RTLD_NOW)) == NULL &&
(handle = dlopen("libssl.so.1.0.0", RTLD_NOW)) == NULL &&
(handle = dlopen("libssl.1.0.0.dylib", RTLD_NOW)) == NULL &&
(handle = dlopen("libssl.so.10", RTLD_NOW)) == NULL) {
ntlm_client_set_errmsg(ntlm, "could not open libssl");
return false;
}
ntlm->crypt_ctx.des_set_key_fn = dlsym(handle, "DES_set_key");
ntlm->crypt_ctx.des_ecb_encrypt_fn = dlsym(handle, "DES_ecb_encrypt");
ntlm->crypt_ctx.err_get_error_fn = dlsym(handle, "ERR_get_error");
ntlm->crypt_ctx.err_lib_error_string_fn = dlsym(handle, "ERR_lib_error_string");
ntlm->crypt_ctx.evp_md5_fn = dlsym(handle, "EVP_md5");
ntlm->crypt_ctx.hmac_ctx_new_fn = dlsym(handle, "HMAC_CTX_new");
ntlm->crypt_ctx.hmac_ctx_free_fn = dlsym(handle, "HMAC_CTX_free");
ntlm->crypt_ctx.hmac_ctx_reset_fn = dlsym(handle, "HMAC_CTX_reset");
ntlm->crypt_ctx.hmac_init_ex_fn = dlsym(handle, "HMAC_Init_ex");
ntlm->crypt_ctx.hmac_update_fn = dlsym(handle, "HMAC_Update");
ntlm->crypt_ctx.hmac_final_fn = dlsym(handle, "HMAC_Final");
ntlm->crypt_ctx.md4_fn = dlsym(handle, "MD4");
ntlm->crypt_ctx.rand_bytes_fn = dlsym(handle, "RAND_bytes");
if (!ntlm->crypt_ctx.des_set_key_fn ||
!ntlm->crypt_ctx.des_ecb_encrypt_fn ||
!ntlm->crypt_ctx.err_get_error_fn ||
!ntlm->crypt_ctx.err_lib_error_string_fn ||
!ntlm->crypt_ctx.evp_md5_fn ||
!ntlm->crypt_ctx.hmac_init_ex_fn ||
!ntlm->crypt_ctx.hmac_update_fn ||
!ntlm->crypt_ctx.hmac_final_fn ||
!ntlm->crypt_ctx.md4_fn ||
!ntlm->crypt_ctx.rand_bytes_fn) {
ntlm_client_set_errmsg(ntlm, "could not load libssl functions");
dlclose(handle);
return false;
}
/* Toggle legacy HMAC context functions */
if (ntlm->crypt_ctx.hmac_ctx_new_fn &&
ntlm->crypt_ctx.hmac_ctx_free_fn &&
ntlm->crypt_ctx.hmac_ctx_reset_fn) {
ntlm->crypt_ctx.hmac_ctx_cleanup_fn = HMAC_CTX_cleanup;
} else {
ntlm->crypt_ctx.hmac_ctx_cleanup_fn = dlsym(handle, "HMAC_CTX_cleanup");
if (!ntlm->crypt_ctx.hmac_ctx_cleanup_fn) {
ntlm_client_set_errmsg(ntlm, "could not load legacy libssl functions");
dlclose(handle);
return false;
}
ntlm->crypt_ctx.hmac_ctx_new_fn = HMAC_CTX_new;
ntlm->crypt_ctx.hmac_ctx_free_fn = HMAC_CTX_free;
ntlm->crypt_ctx.hmac_ctx_reset_fn = HMAC_CTX_reset;
}
ntlm->crypt_ctx.openssl_handle = handle;
return true;
}
#else /* CRYPT_OPENSSL_DYNAMIC */
static bool ntlm_crypt_init_functions(ntlm_client *ntlm)
{
ntlm->crypt_ctx.des_set_key_fn = DES_set_key;
ntlm->crypt_ctx.des_ecb_encrypt_fn = DES_ecb_encrypt;
ntlm->crypt_ctx.err_get_error_fn = ERR_get_error;
ntlm->crypt_ctx.err_lib_error_string_fn = ERR_lib_error_string;
ntlm->crypt_ctx.evp_md5_fn = EVP_md5;
ntlm->crypt_ctx.hmac_ctx_new_fn = HMAC_CTX_new;
ntlm->crypt_ctx.hmac_ctx_free_fn = HMAC_CTX_free;
ntlm->crypt_ctx.hmac_ctx_reset_fn = HMAC_CTX_reset;
ntlm->crypt_ctx.hmac_ctx_cleanup_fn = HMAC_CTX_cleanup;
ntlm->crypt_ctx.hmac_init_ex_fn = HMAC_Init_ex;
ntlm->crypt_ctx.hmac_update_fn = HMAC_Update;
ntlm->crypt_ctx.hmac_final_fn = HMAC_Final;
ntlm->crypt_ctx.md4_fn = MD4;
ntlm->crypt_ctx.rand_bytes_fn = RAND_bytes;
return true;
}
#endif /* CRYPT_OPENSSL_DYNAMIC */
bool ntlm_crypt_init(ntlm_client *ntlm)
{
if (!ntlm_crypt_init_functions(ntlm))
return false;
ntlm->crypt_ctx.hmac = ntlm->crypt_ctx.hmac_ctx_new_fn();
if (ntlm->crypt_ctx.hmac == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return false;
}
return true;
}
bool ntlm_random_bytes(
unsigned char *out,
ntlm_client *ntlm,
size_t len)
{
int rc = ntlm->crypt_ctx.rand_bytes_fn(out, len);
if (rc != 1) {
ntlm_client_set_errmsg(ntlm, ntlm->crypt_ctx.err_lib_error_string_fn(ntlm->crypt_ctx.err_get_error_fn()));
return false;
}
return true;
}
bool ntlm_des_encrypt(
ntlm_des_block *out,
ntlm_client *ntlm,
ntlm_des_block *plaintext,
ntlm_des_block *key)
{
DES_key_schedule keysched;
NTLM_UNUSED(ntlm);
memset(out, 0, sizeof(ntlm_des_block));
ntlm->crypt_ctx.des_set_key_fn(key, &keysched);
ntlm->crypt_ctx.des_ecb_encrypt_fn(plaintext, out, &keysched, DES_ENCRYPT);
return true;
}
bool ntlm_md4_digest(
unsigned char out[CRYPT_MD4_DIGESTSIZE],
ntlm_client *ntlm,
const unsigned char *in,
size_t in_len)
{
ntlm->crypt_ctx.md4_fn(in, in_len, out);
return true;
}
bool ntlm_hmac_md5_init(
ntlm_client *ntlm,
const unsigned char *key,
size_t key_len)
{
const EVP_MD *md5 = ntlm->crypt_ctx.evp_md5_fn();
ntlm->crypt_ctx.hmac_ctx_cleanup_fn(ntlm->crypt_ctx.hmac);
return ntlm->crypt_ctx.hmac_ctx_reset_fn(ntlm->crypt_ctx.hmac) &&
ntlm->crypt_ctx.hmac_init_ex_fn(ntlm->crypt_ctx.hmac, key, key_len, md5, NULL);
}
bool ntlm_hmac_md5_update(
ntlm_client *ntlm,
const unsigned char *in,
size_t in_len)
{
return ntlm->crypt_ctx.hmac_update_fn(ntlm->crypt_ctx.hmac, in, in_len);
}
bool ntlm_hmac_md5_final(
unsigned char *out,
size_t *out_len,
ntlm_client *ntlm)
{
unsigned int len;
if (*out_len < CRYPT_MD5_DIGESTSIZE)
return false;
if (!ntlm->crypt_ctx.hmac_final_fn(ntlm->crypt_ctx.hmac, out, &len))
return false;
*out_len = len;
return true;
}
void ntlm_crypt_shutdown(ntlm_client *ntlm)
{
if (ntlm->crypt_ctx.hmac) {
ntlm->crypt_ctx.hmac_ctx_cleanup_fn(ntlm->crypt_ctx.hmac);
ntlm->crypt_ctx.hmac_ctx_free_fn(ntlm->crypt_ctx.hmac);
}
#ifdef CRYPT_OPENSSL_DYNAMIC
if (ntlm->crypt_ctx.openssl_handle)
dlclose(ntlm->crypt_ctx.openssl_handle);
#endif
memset(&ntlm->crypt_ctx, 0, sizeof(ntlm_crypt_ctx));
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/util.c
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#include <stdlib.h>
#include <stdint.h>
#include <arpa/inet.h>
#include "compat.h"
#include "util.h"
void ntlm_memzero(void *data, size_t size)
{
volatile uint8_t *scan = (volatile uint8_t *)data;
while (size--)
*scan++ = 0x0;
}
uint64_t ntlm_htonll(uint64_t value)
{
static union {
uint32_t i;
char c[8];
} test = { 0x01020304 };
if (test.c[0] == 0x01)
return value;
else
return ((uint64_t)htonl(value) << 32) | htonl((uint64_t)value >> 32);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/unicode_iconv.c
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#include <locale.h>
#include <iconv.h>
#include <string.h>
#include <errno.h>
#include "ntlmclient.h"
#include "unicode.h"
#include "ntlm.h"
#include "compat.h"
typedef enum {
unicode_iconv_utf8_to_16,
unicode_iconv_utf16_to_8
} unicode_iconv_encoding_direction;
bool ntlm_unicode_init(ntlm_client *ntlm)
{
ntlm->unicode_ctx.utf8_to_16 = iconv_open("UTF-16LE", "UTF-8");
ntlm->unicode_ctx.utf16_to_8 = iconv_open("UTF-8", "UTF-16LE");
if (ntlm->unicode_ctx.utf8_to_16 == (iconv_t)-1 ||
ntlm->unicode_ctx.utf16_to_8 == (iconv_t)-1) {
if (errno == EINVAL)
ntlm_client_set_errmsg(ntlm,
"iconv does not support UTF8 <-> UTF16 conversion");
else
ntlm_client_set_errmsg(ntlm, strerror(errno));
return false;
}
return true;
}
static inline bool unicode_iconv_encoding_convert(
char **converted,
size_t *converted_len,
ntlm_client *ntlm,
const char *string,
size_t string_len,
unicode_iconv_encoding_direction direction)
{
char *in_start, *out_start, *out, *new_out;
size_t in_start_len, out_start_len, out_size, nul_size, ret, written = 0;
iconv_t converter;
*converted = NULL;
*converted_len = 0;
/*
* When translating UTF8 to UTF16, these strings are only used
* internally, and we obey the given length, so we can simply
* use a buffer that is 2x the size. When translating from UTF16
* to UTF8, we may need to return to callers, so we need to NUL
* terminate and expect an extra byte for UTF8, two for UTF16.
*/
if (direction == unicode_iconv_utf8_to_16) {
converter = ntlm->unicode_ctx.utf8_to_16;
out_size = (string_len * 2) + 2;
nul_size = 2;
} else {
converter = ntlm->unicode_ctx.utf16_to_8;
out_size = (string_len / 2) + 1;
nul_size = 1;
}
/* Round to the nearest multiple of 8 */
out_size = (out_size + 7) & ~7;
if ((out = malloc(out_size)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
return false;
}
in_start = (char *)string;
in_start_len = string_len;
while (true) {
out_start = out + written;
out_start_len = (out_size - nul_size) - written;
ret = iconv(converter, &in_start, &in_start_len, &out_start, &out_start_len);
written = (out_size - nul_size) - out_start_len;
if (ret == 0)
break;
if (ret == (size_t)-1 && errno != E2BIG) {
ntlm_client_set_errmsg(ntlm, strerror(errno));
goto on_error;
}
/* Grow buffer size by 1.5 (rounded up to a multiple of 8) */
out_size = ((((out_size << 1) - (out_size >> 1)) + 7) & ~7);
if (out_size > NTLM_UNICODE_MAX_LEN) {
ntlm_client_set_errmsg(ntlm, "unicode conversion too large");
goto on_error;
}
if ((new_out = realloc(out, out_size)) == NULL) {
ntlm_client_set_errmsg(ntlm, "out of memory");
goto on_error;
}
out = new_out;
}
if (in_start_len != 0) {
ntlm_client_set_errmsg(ntlm,
"invalid unicode string; trailing data remains");
goto on_error;
}
/* NUL terminate */
out[written] = '\0';
if (direction == unicode_iconv_utf8_to_16)
out[written + 1] = '\0';
*converted = out;
if (converted_len)
*converted_len = written;
return true;
on_error:
free(out);
return false;
}
bool ntlm_unicode_utf8_to_16(
char **converted,
size_t *converted_len,
ntlm_client *ntlm,
const char *string,
size_t string_len)
{
return unicode_iconv_encoding_convert(
converted, converted_len, ntlm, string, string_len,
unicode_iconv_utf8_to_16);
}
bool ntlm_unicode_utf16_to_8(
char **converted,
size_t *converted_len,
ntlm_client *ntlm,
const char *string,
size_t string_len)
{
return unicode_iconv_encoding_convert(
converted, converted_len, ntlm, string, string_len,
unicode_iconv_utf16_to_8);
}
void ntlm_unicode_shutdown(ntlm_client *ntlm)
{
if (ntlm->unicode_ctx.utf16_to_8 != (iconv_t)0 &&
ntlm->unicode_ctx.utf16_to_8 != (iconv_t)-1)
iconv_close(ntlm->unicode_ctx.utf16_to_8);
if (ntlm->unicode_ctx.utf8_to_16 != (iconv_t)0 &&
ntlm->unicode_ctx.utf8_to_16 != (iconv_t)-1)
iconv_close(ntlm->unicode_ctx.utf8_to_16);
ntlm->unicode_ctx.utf8_to_16 = (iconv_t)-1;
ntlm->unicode_ctx.utf16_to_8 = (iconv_t)-1;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/ntlmclient/crypt_commoncrypto.h
|
/*
* Copyright (c) Edward Thomson. All rights reserved.
*
* This file is part of ntlmclient, distributed under the MIT license.
* For full terms and copyright information, and for third-party
* copyright information, see the included LICENSE.txt file.
*/
#ifndef PRIVATE_CRYPT_COMMONCRYPTO_H__
#define PRIVATE_CRYPT_COMMONCRYPTO_H__
#include <CommonCrypto/CommonCrypto.h>
struct ntlm_crypt_ctx {
CCHmacContext hmac;
};
#endif /* PRIVATE_CRYPT_COMMONCRYPTO_H__ */
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/winhttp/winhttp.h
|
/*
* Copyright (C) 2007 Francois Gouget
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#if defined(__MINGW_VERSION) || defined(__MINGW32_VERSION)
#ifndef __WINE_WINHTTP_H
#define __WINE_WINHTTP_H
#ifdef _WIN64
#include <pshpack8.h>
#else
#include <pshpack4.h>
#endif
#define WINHTTPAPI
#define BOOLAPI WINHTTPAPI BOOL WINAPI
typedef LPVOID HINTERNET;
typedef HINTERNET *LPHINTERNET;
#define INTERNET_DEFAULT_PORT 0
#define INTERNET_DEFAULT_HTTP_PORT 80
#define INTERNET_DEFAULT_HTTPS_PORT 443
typedef WORD INTERNET_PORT;
typedef INTERNET_PORT *LPINTERNET_PORT;
#define INTERNET_SCHEME_HTTP 1
#define INTERNET_SCHEME_HTTPS 2
typedef int INTERNET_SCHEME, *LPINTERNET_SCHEME;
#define ICU_ESCAPE 0x80000000
/* flags for WinHttpOpen */
#define WINHTTP_FLAG_ASYNC 0x10000000
/* flags for WinHttpOpenRequest */
#define WINHTTP_FLAG_ESCAPE_PERCENT 0x00000004
#define WINHTTP_FLAG_NULL_CODEPAGE 0x00000008
#define WINHTTP_FLAG_ESCAPE_DISABLE 0x00000040
#define WINHTTP_FLAG_ESCAPE_DISABLE_QUERY 0x00000080
#define WINHTTP_FLAG_BYPASS_PROXY_CACHE 0x00000100
#define WINHTTP_FLAG_REFRESH WINHTTP_FLAG_BYPASS_PROXY_CACHE
#define WINHTTP_FLAG_SECURE 0x00800000
#define WINHTTP_ACCESS_TYPE_DEFAULT_PROXY 0
#define WINHTTP_ACCESS_TYPE_NO_PROXY 1
#define WINHTTP_ACCESS_TYPE_NAMED_PROXY 3
#define WINHTTP_NO_PROXY_NAME NULL
#define WINHTTP_NO_PROXY_BYPASS NULL
#define WINHTTP_NO_REFERER NULL
#define WINHTTP_DEFAULT_ACCEPT_TYPES NULL
#define WINHTTP_NO_ADDITIONAL_HEADERS NULL
#define WINHTTP_NO_REQUEST_DATA NULL
#define WINHTTP_HEADER_NAME_BY_INDEX NULL
#define WINHTTP_NO_OUTPUT_BUFFER NULL
#define WINHTTP_NO_HEADER_INDEX NULL
#define WINHTTP_ADDREQ_INDEX_MASK 0x0000FFFF
#define WINHTTP_ADDREQ_FLAGS_MASK 0xFFFF0000
#define WINHTTP_ADDREQ_FLAG_ADD_IF_NEW 0x10000000
#define WINHTTP_ADDREQ_FLAG_ADD 0x20000000
#define WINHTTP_ADDREQ_FLAG_COALESCE_WITH_COMMA 0x40000000
#define WINHTTP_ADDREQ_FLAG_COALESCE_WITH_SEMICOLON 0x01000000
#define WINHTTP_ADDREQ_FLAG_COALESCE WINHTTP_ADDREQ_FLAG_COALESCE_WITH_COMMA
#define WINHTTP_ADDREQ_FLAG_REPLACE 0x80000000
#define WINHTTP_IGNORE_REQUEST_TOTAL_LENGTH 0
/* flags for WinHttp{Set/Query}Options */
#define WINHTTP_FIRST_OPTION WINHTTP_OPTION_CALLBACK
#define WINHTTP_OPTION_CALLBACK 1
#define WINHTTP_OPTION_RESOLVE_TIMEOUT 2
#define WINHTTP_OPTION_CONNECT_TIMEOUT 3
#define WINHTTP_OPTION_CONNECT_RETRIES 4
#define WINHTTP_OPTION_SEND_TIMEOUT 5
#define WINHTTP_OPTION_RECEIVE_TIMEOUT 6
#define WINHTTP_OPTION_RECEIVE_RESPONSE_TIMEOUT 7
#define WINHTTP_OPTION_HANDLE_TYPE 9
#define WINHTTP_OPTION_READ_BUFFER_SIZE 12
#define WINHTTP_OPTION_WRITE_BUFFER_SIZE 13
#define WINHTTP_OPTION_PARENT_HANDLE 21
#define WINHTTP_OPTION_EXTENDED_ERROR 24
#define WINHTTP_OPTION_SECURITY_FLAGS 31
#define WINHTTP_OPTION_SECURITY_CERTIFICATE_STRUCT 32
#define WINHTTP_OPTION_URL 34
#define WINHTTP_OPTION_SECURITY_KEY_BITNESS 36
#define WINHTTP_OPTION_PROXY 38
#define WINHTTP_OPTION_USER_AGENT 41
#define WINHTTP_OPTION_CONTEXT_VALUE 45
#define WINHTTP_OPTION_CLIENT_CERT_CONTEXT 47
#define WINHTTP_OPTION_REQUEST_PRIORITY 58
#define WINHTTP_OPTION_HTTP_VERSION 59
#define WINHTTP_OPTION_DISABLE_FEATURE 63
#define WINHTTP_OPTION_CODEPAGE 68
#define WINHTTP_OPTION_MAX_CONNS_PER_SERVER 73
#define WINHTTP_OPTION_MAX_CONNS_PER_1_0_SERVER 74
#define WINHTTP_OPTION_AUTOLOGON_POLICY 77
#define WINHTTP_OPTION_SERVER_CERT_CONTEXT 78
#define WINHTTP_OPTION_ENABLE_FEATURE 79
#define WINHTTP_OPTION_WORKER_THREAD_COUNT 80
#define WINHTTP_OPTION_PASSPORT_COBRANDING_TEXT 81
#define WINHTTP_OPTION_PASSPORT_COBRANDING_URL 82
#define WINHTTP_OPTION_CONFIGURE_PASSPORT_AUTH 83
#define WINHTTP_OPTION_SECURE_PROTOCOLS 84
#define WINHTTP_OPTION_ENABLETRACING 85
#define WINHTTP_OPTION_PASSPORT_SIGN_OUT 86
#define WINHTTP_OPTION_PASSPORT_RETURN_URL 87
#define WINHTTP_OPTION_REDIRECT_POLICY 88
#define WINHTTP_OPTION_MAX_HTTP_AUTOMATIC_REDIRECTS 89
#define WINHTTP_OPTION_MAX_HTTP_STATUS_CONTINUE 90
#define WINHTTP_OPTION_MAX_RESPONSE_HEADER_SIZE 91
#define WINHTTP_OPTION_MAX_RESPONSE_DRAIN_SIZE 92
#define WINHTTP_OPTION_CONNECTION_INFO 93
#define WINHTTP_OPTION_CLIENT_CERT_ISSUER_LIST 94
#define WINHTTP_OPTION_SPN 96
#define WINHTTP_OPTION_GLOBAL_PROXY_CREDS 97
#define WINHTTP_OPTION_GLOBAL_SERVER_CREDS 98
#define WINHTTP_OPTION_UNLOAD_NOTIFY_EVENT 99
#define WINHTTP_OPTION_REJECT_USERPWD_IN_URL 100
#define WINHTTP_OPTION_USE_GLOBAL_SERVER_CREDENTIALS 101
#define WINHTTP_LAST_OPTION WINHTTP_OPTION_USE_GLOBAL_SERVER_CREDENTIALS
#define WINHTTP_OPTION_USERNAME 0x1000
#define WINHTTP_OPTION_PASSWORD 0x1001
#define WINHTTP_OPTION_PROXY_USERNAME 0x1002
#define WINHTTP_OPTION_PROXY_PASSWORD 0x1003
#define WINHTTP_CONNS_PER_SERVER_UNLIMITED 0xFFFFFFFF
#define WINHTTP_AUTOLOGON_SECURITY_LEVEL_MEDIUM 0
#define WINHTTP_AUTOLOGON_SECURITY_LEVEL_LOW 1
#define WINHTTP_AUTOLOGON_SECURITY_LEVEL_HIGH 2
#define WINHTTP_AUTOLOGON_SECURITY_LEVEL_DEFAULT WINHTTP_AUTOLOGON_SECURITY_LEVEL_MEDIUM
#define WINHTTP_OPTION_REDIRECT_POLICY_NEVER 0
#define WINHTTP_OPTION_REDIRECT_POLICY_DISALLOW_HTTPS_TO_HTTP 1
#define WINHTTP_OPTION_REDIRECT_POLICY_ALWAYS 2
#define WINHTTP_OPTION_REDIRECT_POLICY_LAST WINHTTP_OPTION_REDIRECT_POLICY_ALWAYS
#define WINHTTP_OPTION_REDIRECT_POLICY_DEFAULT WINHTTP_OPTION_REDIRECT_POLICY_DISALLOW_HTTPS_TO_HTTP
#define WINHTTP_DISABLE_PASSPORT_AUTH 0x00000000
#define WINHTTP_ENABLE_PASSPORT_AUTH 0x10000000
#define WINHTTP_DISABLE_PASSPORT_KEYRING 0x20000000
#define WINHTTP_ENABLE_PASSPORT_KEYRING 0x40000000
#define WINHTTP_DISABLE_COOKIES 0x00000001
#define WINHTTP_DISABLE_REDIRECTS 0x00000002
#define WINHTTP_DISABLE_AUTHENTICATION 0x00000004
#define WINHTTP_DISABLE_KEEP_ALIVE 0x00000008
#define WINHTTP_ENABLE_SSL_REVOCATION 0x00000001
#define WINHTTP_ENABLE_SSL_REVERT_IMPERSONATION 0x00000002
#define WINHTTP_DISABLE_SPN_SERVER_PORT 0x00000000
#define WINHTTP_ENABLE_SPN_SERVER_PORT 0x00000001
#define WINHTTP_OPTION_SPN_MASK WINHTTP_ENABLE_SPN_SERVER_PORT
/* Options for WinHttpOpenRequest */
#define WINHTTP_NO_REFERER NULL
#define WINHTTP_DEFAULT_ACCEPT_TYPES NULL
/* Options for WinHttpSendRequest */
#define WINHTTP_NO_ADDITIONAL_HEADERS NULL
#define WINHTTP_NO_REQUEST_DATA NULL
/* WinHTTP error codes */
#define WINHTTP_ERROR_BASE 12000
#define ERROR_WINHTTP_OUT_OF_HANDLES (WINHTTP_ERROR_BASE + 1)
#define ERROR_WINHTTP_TIMEOUT (WINHTTP_ERROR_BASE + 2)
#define ERROR_WINHTTP_INTERNAL_ERROR (WINHTTP_ERROR_BASE + 4)
#define ERROR_WINHTTP_INVALID_URL (WINHTTP_ERROR_BASE + 5)
#define ERROR_WINHTTP_UNRECOGNIZED_SCHEME (WINHTTP_ERROR_BASE + 6)
#define ERROR_WINHTTP_NAME_NOT_RESOLVED (WINHTTP_ERROR_BASE + 7)
#define ERROR_WINHTTP_INVALID_OPTION (WINHTTP_ERROR_BASE + 9)
#define ERROR_WINHTTP_OPTION_NOT_SETTABLE (WINHTTP_ERROR_BASE + 11)
#define ERROR_WINHTTP_SHUTDOWN (WINHTTP_ERROR_BASE + 12)
#define ERROR_WINHTTP_LOGIN_FAILURE (WINHTTP_ERROR_BASE + 15)
#define ERROR_WINHTTP_OPERATION_CANCELLED (WINHTTP_ERROR_BASE + 17)
#define ERROR_WINHTTP_INCORRECT_HANDLE_TYPE (WINHTTP_ERROR_BASE + 18)
#define ERROR_WINHTTP_INCORRECT_HANDLE_STATE (WINHTTP_ERROR_BASE + 19)
#define ERROR_WINHTTP_CANNOT_CONNECT (WINHTTP_ERROR_BASE + 29)
#define ERROR_WINHTTP_CONNECTION_ERROR (WINHTTP_ERROR_BASE + 30)
#define ERROR_WINHTTP_RESEND_REQUEST (WINHTTP_ERROR_BASE + 32)
#define ERROR_WINHTTP_SECURE_CERT_DATE_INVALID (WINHTTP_ERROR_BASE + 37)
#define ERROR_WINHTTP_SECURE_CERT_CN_INVALID (WINHTTP_ERROR_BASE + 38)
#define ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED (WINHTTP_ERROR_BASE + 44)
#define ERROR_WINHTTP_SECURE_INVALID_CA (WINHTTP_ERROR_BASE + 45)
#define ERROR_WINHTTP_SECURE_CERT_REV_FAILED (WINHTTP_ERROR_BASE + 57)
#define ERROR_WINHTTP_CANNOT_CALL_BEFORE_OPEN (WINHTTP_ERROR_BASE + 100)
#define ERROR_WINHTTP_CANNOT_CALL_BEFORE_SEND (WINHTTP_ERROR_BASE + 101)
#define ERROR_WINHTTP_CANNOT_CALL_AFTER_SEND (WINHTTP_ERROR_BASE + 102)
#define ERROR_WINHTTP_CANNOT_CALL_AFTER_OPEN (WINHTTP_ERROR_BASE + 103)
#define ERROR_WINHTTP_HEADER_NOT_FOUND (WINHTTP_ERROR_BASE + 150)
#define ERROR_WINHTTP_INVALID_SERVER_RESPONSE (WINHTTP_ERROR_BASE + 152)
#define ERROR_WINHTTP_INVALID_HEADER (WINHTTP_ERROR_BASE + 153)
#define ERROR_WINHTTP_INVALID_QUERY_REQUEST (WINHTTP_ERROR_BASE + 154)
#define ERROR_WINHTTP_HEADER_ALREADY_EXISTS (WINHTTP_ERROR_BASE + 155)
#define ERROR_WINHTTP_REDIRECT_FAILED (WINHTTP_ERROR_BASE + 156)
#define ERROR_WINHTTP_SECURE_CHANNEL_ERROR (WINHTTP_ERROR_BASE + 157)
#define ERROR_WINHTTP_BAD_AUTO_PROXY_SCRIPT (WINHTTP_ERROR_BASE + 166)
#define ERROR_WINHTTP_UNABLE_TO_DOWNLOAD_SCRIPT (WINHTTP_ERROR_BASE + 167)
#define ERROR_WINHTTP_SECURE_INVALID_CERT (WINHTTP_ERROR_BASE + 169)
#define ERROR_WINHTTP_SECURE_CERT_REVOKED (WINHTTP_ERROR_BASE + 170)
#define ERROR_WINHTTP_NOT_INITIALIZED (WINHTTP_ERROR_BASE + 172)
#define ERROR_WINHTTP_SECURE_FAILURE (WINHTTP_ERROR_BASE + 175)
#define ERROR_WINHTTP_AUTO_PROXY_SERVICE_ERROR (WINHTTP_ERROR_BASE + 178)
#define ERROR_WINHTTP_SECURE_CERT_WRONG_USAGE (WINHTTP_ERROR_BASE + 179)
#define ERROR_WINHTTP_AUTODETECTION_FAILED (WINHTTP_ERROR_BASE + 180)
#define ERROR_WINHTTP_HEADER_COUNT_EXCEEDED (WINHTTP_ERROR_BASE + 181)
#define ERROR_WINHTTP_HEADER_SIZE_OVERFLOW (WINHTTP_ERROR_BASE + 182)
#define ERROR_WINHTTP_CHUNKED_ENCODING_HEADER_SIZE_OVERFLOW (WINHTTP_ERROR_BASE + 183)
#define ERROR_WINHTTP_RESPONSE_DRAIN_OVERFLOW (WINHTTP_ERROR_BASE + 184)
#define ERROR_WINHTTP_CLIENT_CERT_NO_PRIVATE_KEY (WINHTTP_ERROR_BASE + 185)
#define ERROR_WINHTTP_CLIENT_CERT_NO_ACCESS_PRIVATE_KEY (WINHTTP_ERROR_BASE + 186)
#define WINHTTP_ERROR_LAST (WINHTTP_ERROR_BASE + 186)
/* WinHttp status codes */
#define HTTP_STATUS_CONTINUE 100
#define HTTP_STATUS_SWITCH_PROTOCOLS 101
#define HTTP_STATUS_OK 200
#define HTTP_STATUS_CREATED 201
#define HTTP_STATUS_ACCEPTED 202
#define HTTP_STATUS_PARTIAL 203
#define HTTP_STATUS_NO_CONTENT 204
#define HTTP_STATUS_RESET_CONTENT 205
#define HTTP_STATUS_PARTIAL_CONTENT 206
#define HTTP_STATUS_WEBDAV_MULTI_STATUS 207
#define HTTP_STATUS_AMBIGUOUS 300
#define HTTP_STATUS_MOVED 301
#define HTTP_STATUS_REDIRECT 302
#define HTTP_STATUS_REDIRECT_METHOD 303
#define HTTP_STATUS_NOT_MODIFIED 304
#define HTTP_STATUS_USE_PROXY 305
#define HTTP_STATUS_REDIRECT_KEEP_VERB 307
#define HTTP_STATUS_BAD_REQUEST 400
#define HTTP_STATUS_DENIED 401
#define HTTP_STATUS_PAYMENT_REQ 402
#define HTTP_STATUS_FORBIDDEN 403
#define HTTP_STATUS_NOT_FOUND 404
#define HTTP_STATUS_BAD_METHOD 405
#define HTTP_STATUS_NONE_ACCEPTABLE 406
#define HTTP_STATUS_PROXY_AUTH_REQ 407
#define HTTP_STATUS_REQUEST_TIMEOUT 408
#define HTTP_STATUS_CONFLICT 409
#define HTTP_STATUS_GONE 410
#define HTTP_STATUS_LENGTH_REQUIRED 411
#define HTTP_STATUS_PRECOND_FAILED 412
#define HTTP_STATUS_REQUEST_TOO_LARGE 413
#define HTTP_STATUS_URI_TOO_LONG 414
#define HTTP_STATUS_UNSUPPORTED_MEDIA 415
#define HTTP_STATUS_RETRY_WITH 449
#define HTTP_STATUS_SERVER_ERROR 500
#define HTTP_STATUS_NOT_SUPPORTED 501
#define HTTP_STATUS_BAD_GATEWAY 502
#define HTTP_STATUS_SERVICE_UNAVAIL 503
#define HTTP_STATUS_GATEWAY_TIMEOUT 504
#define HTTP_STATUS_VERSION_NOT_SUP 505
#define HTTP_STATUS_FIRST HTTP_STATUS_CONTINUE
#define HTTP_STATUS_LAST HTTP_STATUS_VERSION_NOT_SUP
#define SECURITY_FLAG_IGNORE_UNKNOWN_CA 0x00000100
#define SECURITY_FLAG_IGNORE_CERT_DATE_INVALID 0x00002000
#define SECURITY_FLAG_IGNORE_CERT_CN_INVALID 0x00001000
#define SECURITY_FLAG_IGNORE_CERT_WRONG_USAGE 0x00000200
#define SECURITY_FLAG_SECURE 0x00000001
#define SECURITY_FLAG_STRENGTH_WEAK 0x10000000
#define SECURITY_FLAG_STRENGTH_MEDIUM 0x40000000
#define SECURITY_FLAG_STRENGTH_STRONG 0x20000000
#define ICU_NO_ENCODE 0x20000000
#define ICU_DECODE 0x10000000
#define ICU_NO_META 0x08000000
#define ICU_ENCODE_SPACES_ONLY 0x04000000
#define ICU_BROWSER_MODE 0x02000000
#define ICU_ENCODE_PERCENT 0x00001000
/* Query flags */
#define WINHTTP_QUERY_MIME_VERSION 0
#define WINHTTP_QUERY_CONTENT_TYPE 1
#define WINHTTP_QUERY_CONTENT_TRANSFER_ENCODING 2
#define WINHTTP_QUERY_CONTENT_ID 3
#define WINHTTP_QUERY_CONTENT_DESCRIPTION 4
#define WINHTTP_QUERY_CONTENT_LENGTH 5
#define WINHTTP_QUERY_CONTENT_LANGUAGE 6
#define WINHTTP_QUERY_ALLOW 7
#define WINHTTP_QUERY_PUBLIC 8
#define WINHTTP_QUERY_DATE 9
#define WINHTTP_QUERY_EXPIRES 10
#define WINHTTP_QUERY_LAST_MODIFIED 11
#define WINHTTP_QUERY_MESSAGE_ID 12
#define WINHTTP_QUERY_URI 13
#define WINHTTP_QUERY_DERIVED_FROM 14
#define WINHTTP_QUERY_COST 15
#define WINHTTP_QUERY_LINK 16
#define WINHTTP_QUERY_PRAGMA 17
#define WINHTTP_QUERY_VERSION 18
#define WINHTTP_QUERY_STATUS_CODE 19
#define WINHTTP_QUERY_STATUS_TEXT 20
#define WINHTTP_QUERY_RAW_HEADERS 21
#define WINHTTP_QUERY_RAW_HEADERS_CRLF 22
#define WINHTTP_QUERY_CONNECTION 23
#define WINHTTP_QUERY_ACCEPT 24
#define WINHTTP_QUERY_ACCEPT_CHARSET 25
#define WINHTTP_QUERY_ACCEPT_ENCODING 26
#define WINHTTP_QUERY_ACCEPT_LANGUAGE 27
#define WINHTTP_QUERY_AUTHORIZATION 28
#define WINHTTP_QUERY_CONTENT_ENCODING 29
#define WINHTTP_QUERY_FORWARDED 30
#define WINHTTP_QUERY_FROM 31
#define WINHTTP_QUERY_IF_MODIFIED_SINCE 32
#define WINHTTP_QUERY_LOCATION 33
#define WINHTTP_QUERY_ORIG_URI 34
#define WINHTTP_QUERY_REFERER 35
#define WINHTTP_QUERY_RETRY_AFTER 36
#define WINHTTP_QUERY_SERVER 37
#define WINHTTP_QUERY_TITLE 38
#define WINHTTP_QUERY_USER_AGENT 39
#define WINHTTP_QUERY_WWW_AUTHENTICATE 40
#define WINHTTP_QUERY_PROXY_AUTHENTICATE 41
#define WINHTTP_QUERY_ACCEPT_RANGES 42
#define WINHTTP_QUERY_SET_COOKIE 43
#define WINHTTP_QUERY_COOKIE 44
#define WINHTTP_QUERY_REQUEST_METHOD 45
#define WINHTTP_QUERY_REFRESH 46
#define WINHTTP_QUERY_CONTENT_DISPOSITION 47
#define WINHTTP_QUERY_AGE 48
#define WINHTTP_QUERY_CACHE_CONTROL 49
#define WINHTTP_QUERY_CONTENT_BASE 50
#define WINHTTP_QUERY_CONTENT_LOCATION 51
#define WINHTTP_QUERY_CONTENT_MD5 52
#define WINHTTP_QUERY_CONTENT_RANGE 53
#define WINHTTP_QUERY_ETAG 54
#define WINHTTP_QUERY_HOST 55
#define WINHTTP_QUERY_IF_MATCH 56
#define WINHTTP_QUERY_IF_NONE_MATCH 57
#define WINHTTP_QUERY_IF_RANGE 58
#define WINHTTP_QUERY_IF_UNMODIFIED_SINCE 59
#define WINHTTP_QUERY_MAX_FORWARDS 60
#define WINHTTP_QUERY_PROXY_AUTHORIZATION 61
#define WINHTTP_QUERY_RANGE 62
#define WINHTTP_QUERY_TRANSFER_ENCODING 63
#define WINHTTP_QUERY_UPGRADE 64
#define WINHTTP_QUERY_VARY 65
#define WINHTTP_QUERY_VIA 66
#define WINHTTP_QUERY_WARNING 67
#define WINHTTP_QUERY_EXPECT 68
#define WINHTTP_QUERY_PROXY_CONNECTION 69
#define WINHTTP_QUERY_UNLESS_MODIFIED_SINCE 70
#define WINHTTP_QUERY_PROXY_SUPPORT 75
#define WINHTTP_QUERY_AUTHENTICATION_INFO 76
#define WINHTTP_QUERY_PASSPORT_URLS 77
#define WINHTTP_QUERY_PASSPORT_CONFIG 78
#define WINHTTP_QUERY_MAX 78
#define WINHTTP_QUERY_CUSTOM 65535
#define WINHTTP_QUERY_FLAG_REQUEST_HEADERS 0x80000000
#define WINHTTP_QUERY_FLAG_SYSTEMTIME 0x40000000
#define WINHTTP_QUERY_FLAG_NUMBER 0x20000000
/* Callback options */
#define WINHTTP_CALLBACK_STATUS_RESOLVING_NAME 0x00000001
#define WINHTTP_CALLBACK_STATUS_NAME_RESOLVED 0x00000002
#define WINHTTP_CALLBACK_STATUS_CONNECTING_TO_SERVER 0x00000004
#define WINHTTP_CALLBACK_STATUS_CONNECTED_TO_SERVER 0x00000008
#define WINHTTP_CALLBACK_STATUS_SENDING_REQUEST 0x00000010
#define WINHTTP_CALLBACK_STATUS_REQUEST_SENT 0x00000020
#define WINHTTP_CALLBACK_STATUS_RECEIVING_RESPONSE 0x00000040
#define WINHTTP_CALLBACK_STATUS_RESPONSE_RECEIVED 0x00000080
#define WINHTTP_CALLBACK_STATUS_CLOSING_CONNECTION 0x00000100
#define WINHTTP_CALLBACK_STATUS_CONNECTION_CLOSED 0x00000200
#define WINHTTP_CALLBACK_STATUS_HANDLE_CREATED 0x00000400
#define WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING 0x00000800
#define WINHTTP_CALLBACK_STATUS_DETECTING_PROXY 0x00001000
#define WINHTTP_CALLBACK_STATUS_REDIRECT 0x00004000
#define WINHTTP_CALLBACK_STATUS_INTERMEDIATE_RESPONSE 0x00008000
#define WINHTTP_CALLBACK_STATUS_SECURE_FAILURE 0x00010000
#define WINHTTP_CALLBACK_STATUS_HEADERS_AVAILABLE 0x00020000
#define WINHTTP_CALLBACK_STATUS_DATA_AVAILABLE 0x00040000
#define WINHTTP_CALLBACK_STATUS_READ_COMPLETE 0x00080000
#define WINHTTP_CALLBACK_STATUS_WRITE_COMPLETE 0x00100000
#define WINHTTP_CALLBACK_STATUS_REQUEST_ERROR 0x00200000
#define WINHTTP_CALLBACK_STATUS_SENDREQUEST_COMPLETE 0x00400000
#define WINHTTP_CALLBACK_FLAG_RESOLVE_NAME (WINHTTP_CALLBACK_STATUS_RESOLVING_NAME | WINHTTP_CALLBACK_STATUS_NAME_RESOLVED)
#define WINHTTP_CALLBACK_FLAG_CONNECT_TO_SERVER (WINHTTP_CALLBACK_STATUS_CONNECTING_TO_SERVER | WINHTTP_CALLBACK_STATUS_CONNECTED_TO_SERVER)
#define WINHTTP_CALLBACK_FLAG_SEND_REQUEST (WINHTTP_CALLBACK_STATUS_SENDING_REQUEST | WINHTTP_CALLBACK_STATUS_REQUEST_SENT)
#define WINHTTP_CALLBACK_FLAG_RECEIVE_RESPONSE (WINHTTP_CALLBACK_STATUS_RECEIVING_RESPONSE | WINHTTP_CALLBACK_STATUS_RESPONSE_RECEIVED)
#define WINHTTP_CALLBACK_FLAG_CLOSE_CONNECTION (WINHTTP_CALLBACK_STATUS_CLOSING_CONNECTION | WINHTTP_CALLBACK_STATUS_CONNECTION_CLOSED)
#define WINHTTP_CALLBACK_FLAG_HANDLES (WINHTTP_CALLBACK_STATUS_HANDLE_CREATED | WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING)
#define WINHTTP_CALLBACK_FLAG_DETECTING_PROXY WINHTTP_CALLBACK_STATUS_DETECTING_PROXY
#define WINHTTP_CALLBACK_FLAG_REDIRECT WINHTTP_CALLBACK_STATUS_REDIRECT
#define WINHTTP_CALLBACK_FLAG_INTERMEDIATE_RESPONSE WINHTTP_CALLBACK_STATUS_INTERMEDIATE_RESPONSE
#define WINHTTP_CALLBACK_FLAG_SECURE_FAILURE WINHTTP_CALLBACK_STATUS_SECURE_FAILURE
#define WINHTTP_CALLBACK_FLAG_SENDREQUEST_COMPLETE WINHTTP_CALLBACK_STATUS_SENDREQUEST_COMPLETE
#define WINHTTP_CALLBACK_FLAG_HEADERS_AVAILABLE WINHTTP_CALLBACK_STATUS_HEADERS_AVAILABLE
#define WINHTTP_CALLBACK_FLAG_DATA_AVAILABLE WINHTTP_CALLBACK_STATUS_DATA_AVAILABLE
#define WINHTTP_CALLBACK_FLAG_READ_COMPLETE WINHTTP_CALLBACK_STATUS_READ_COMPLETE
#define WINHTTP_CALLBACK_FLAG_WRITE_COMPLETE WINHTTP_CALLBACK_STATUS_WRITE_COMPLETE
#define WINHTTP_CALLBACK_FLAG_REQUEST_ERROR WINHTTP_CALLBACK_STATUS_REQUEST_ERROR
#define WINHTTP_CALLBACK_FLAG_ALL_COMPLETIONS (WINHTTP_CALLBACK_STATUS_SENDREQUEST_COMPLETE | WINHTTP_CALLBACK_STATUS_HEADERS_AVAILABLE \
| WINHTTP_CALLBACK_STATUS_DATA_AVAILABLE | WINHTTP_CALLBACK_STATUS_READ_COMPLETE \
| WINHTTP_CALLBACK_STATUS_WRITE_COMPLETE | WINHTTP_CALLBACK_STATUS_REQUEST_ERROR)
#define WINHTTP_CALLBACK_FLAG_ALL_NOTIFICATIONS 0xffffffff
#define WINHTTP_INVALID_STATUS_CALLBACK ((WINHTTP_STATUS_CALLBACK)(-1))
#define API_RECEIVE_RESPONSE (1)
#define API_QUERY_DATA_AVAILABLE (2)
#define API_READ_DATA (3)
#define API_WRITE_DATA (4)
#define API_SEND_REQUEST (5)
#define WINHTTP_HANDLE_TYPE_SESSION 1
#define WINHTTP_HANDLE_TYPE_CONNECT 2
#define WINHTTP_HANDLE_TYPE_REQUEST 3
#define WINHTTP_CALLBACK_STATUS_FLAG_CERT_REV_FAILED 0x00000001
#define WINHTTP_CALLBACK_STATUS_FLAG_INVALID_CERT 0x00000002
#define WINHTTP_CALLBACK_STATUS_FLAG_CERT_REVOKED 0x00000004
#define WINHTTP_CALLBACK_STATUS_FLAG_INVALID_CA 0x00000008
#define WINHTTP_CALLBACK_STATUS_FLAG_CERT_CN_INVALID 0x00000010
#define WINHTTP_CALLBACK_STATUS_FLAG_CERT_DATE_INVALID 0x00000020
#define WINHTTP_CALLBACK_STATUS_FLAG_CERT_WRONG_USAGE 0x00000040
#define WINHTTP_CALLBACK_STATUS_FLAG_SECURITY_CHANNEL_ERROR 0x80000000
#define WINHTTP_FLAG_SECURE_PROTOCOL_SSL2 0x00000008
#define WINHTTP_FLAG_SECURE_PROTOCOL_SSL3 0x00000020
#define WINHTTP_FLAG_SECURE_PROTOCOL_TLS1 0x00000080
#define WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_1 0x00000200
#define WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_2 0x00000800
#define WINHTTP_FLAG_SECURE_PROTOCOL_ALL (WINHTTP_FLAG_SECURE_PROTOCOL_SSL2 | WINHTTP_FLAG_SECURE_PROTOCOL_SSL3 | WINHTTP_FLAG_SECURE_PROTOCOL_TLS1)
#define WINHTTP_AUTH_SCHEME_BASIC 0x00000001
#define WINHTTP_AUTH_SCHEME_NTLM 0x00000002
#define WINHTTP_AUTH_SCHEME_PASSPORT 0x00000004
#define WINHTTP_AUTH_SCHEME_DIGEST 0x00000008
#define WINHTTP_AUTH_SCHEME_NEGOTIATE 0x00000010
#define WINHTTP_AUTH_TARGET_SERVER 0x00000000
#define WINHTTP_AUTH_TARGET_PROXY 0x00000001
#define WINHTTP_TIME_FORMAT_BUFSIZE 62
typedef struct
{
DWORD dwStructSize;
LPWSTR lpszScheme;
DWORD dwSchemeLength;
INTERNET_SCHEME nScheme;
LPWSTR lpszHostName;
DWORD dwHostNameLength;
INTERNET_PORT nPort;
LPWSTR lpszUserName;
DWORD dwUserNameLength;
LPWSTR lpszPassword;
DWORD dwPasswordLength;
LPWSTR lpszUrlPath;
DWORD dwUrlPathLength;
LPWSTR lpszExtraInfo;
DWORD dwExtraInfoLength;
} URL_COMPONENTS, *LPURL_COMPONENTS;
typedef URL_COMPONENTS URL_COMPONENTSW;
typedef LPURL_COMPONENTS LPURL_COMPONENTSW;
typedef struct
{
DWORD_PTR dwResult;
DWORD dwError;
} WINHTTP_ASYNC_RESULT, *LPWINHTTP_ASYNC_RESULT;
typedef struct
{
FILETIME ftExpiry;
FILETIME ftStart;
LPWSTR lpszSubjectInfo;
LPWSTR lpszIssuerInfo;
LPWSTR lpszProtocolName;
LPWSTR lpszSignatureAlgName;
LPWSTR lpszEncryptionAlgName;
DWORD dwKeySize;
} WINHTTP_CERTIFICATE_INFO;
typedef struct
{
DWORD dwAccessType;
LPWSTR lpszProxy;
LPWSTR lpszProxyBypass;
} WINHTTP_PROXY_INFO, *LPWINHTTP_PROXY_INFO;
typedef WINHTTP_PROXY_INFO WINHTTP_PROXY_INFOW;
typedef LPWINHTTP_PROXY_INFO LPWINHTTP_PROXY_INFOW;
typedef struct
{
BOOL fAutoDetect;
LPWSTR lpszAutoConfigUrl;
LPWSTR lpszProxy;
LPWSTR lpszProxyBypass;
} WINHTTP_CURRENT_USER_IE_PROXY_CONFIG;
typedef VOID (CALLBACK *WINHTTP_STATUS_CALLBACK)(HINTERNET,DWORD_PTR,DWORD,LPVOID,DWORD);
#define WINHTTP_AUTO_DETECT_TYPE_DHCP 0x00000001
#define WINHTTP_AUTO_DETECT_TYPE_DNS_A 0x00000002
#define WINHTTP_AUTOPROXY_AUTO_DETECT 0x00000001
#define WINHTTP_AUTOPROXY_CONFIG_URL 0x00000002
#define WINHTTP_AUTOPROXY_RUN_INPROCESS 0x00010000
#define WINHTTP_AUTOPROXY_RUN_OUTPROCESS_ONLY 0x00020000
typedef struct
{
DWORD dwFlags;
DWORD dwAutoDetectFlags;
LPCWSTR lpszAutoConfigUrl;
LPVOID lpvReserved;
DWORD dwReserved;
BOOL fAutoLogonIfChallenged;
} WINHTTP_AUTOPROXY_OPTIONS;
typedef struct
{
DWORD dwMajorVersion;
DWORD dwMinorVersion;
} HTTP_VERSION_INFO, *LPHTTP_VERSION_INFO;
#ifdef _WS2DEF_
typedef struct
{
DWORD cbSize;
SOCKADDR_STORAGE LocalAddress;
SOCKADDR_STORAGE RemoteAddress;
} WINHTTP_CONNECTION_INFO;
#endif
#ifdef __cplusplus
extern "C" {
#endif
BOOL WINAPI WinHttpAddRequestHeaders(HINTERNET,LPCWSTR,DWORD,DWORD);
BOOL WINAPI WinHttpDetectAutoProxyConfigUrl(DWORD,LPWSTR*);
BOOL WINAPI WinHttpCheckPlatform(void);
BOOL WINAPI WinHttpCloseHandle(HINTERNET);
HINTERNET WINAPI WinHttpConnect(HINTERNET,LPCWSTR,INTERNET_PORT,DWORD);
BOOL WINAPI WinHttpCrackUrl(LPCWSTR,DWORD,DWORD,LPURL_COMPONENTS);
BOOL WINAPI WinHttpCreateUrl(LPURL_COMPONENTS,DWORD,LPWSTR,LPDWORD);
BOOL WINAPI WinHttpGetDefaultProxyConfiguration(WINHTTP_PROXY_INFO*);
BOOL WINAPI WinHttpGetIEProxyConfigForCurrentUser(WINHTTP_CURRENT_USER_IE_PROXY_CONFIG*);
BOOL WINAPI WinHttpGetProxyForUrl(HINTERNET,LPCWSTR,WINHTTP_AUTOPROXY_OPTIONS*,WINHTTP_PROXY_INFO*);
HINTERNET WINAPI WinHttpOpen(LPCWSTR,DWORD,LPCWSTR,LPCWSTR,DWORD);
HINTERNET WINAPI WinHttpOpenRequest(HINTERNET,LPCWSTR,LPCWSTR,LPCWSTR,LPCWSTR,LPCWSTR*,DWORD);
BOOL WINAPI WinHttpQueryAuthParams(HINTERNET,DWORD,LPVOID*);
BOOL WINAPI WinHttpQueryAuthSchemes(HINTERNET,LPDWORD,LPDWORD,LPDWORD);
BOOL WINAPI WinHttpQueryDataAvailable(HINTERNET,LPDWORD);
BOOL WINAPI WinHttpQueryHeaders(HINTERNET,DWORD,LPCWSTR,LPVOID,LPDWORD,LPDWORD);
BOOL WINAPI WinHttpQueryOption(HINTERNET,DWORD,LPVOID,LPDWORD);
BOOL WINAPI WinHttpReadData(HINTERNET,LPVOID,DWORD,LPDWORD);
BOOL WINAPI WinHttpReceiveResponse(HINTERNET,LPVOID);
BOOL WINAPI WinHttpSendRequest(HINTERNET,LPCWSTR,DWORD,LPVOID,DWORD,DWORD,DWORD_PTR);
BOOL WINAPI WinHttpSetDefaultProxyConfiguration(WINHTTP_PROXY_INFO*);
BOOL WINAPI WinHttpSetCredentials(HINTERNET,DWORD,DWORD,LPCWSTR,LPCWSTR,LPVOID);
BOOL WINAPI WinHttpSetOption(HINTERNET,DWORD,LPVOID,DWORD);
WINHTTP_STATUS_CALLBACK WINAPI WinHttpSetStatusCallback(HINTERNET,WINHTTP_STATUS_CALLBACK,DWORD,DWORD_PTR);
BOOL WINAPI WinHttpSetTimeouts(HINTERNET,int,int,int,int);
BOOL WINAPI WinHttpTimeFromSystemTime(const SYSTEMTIME *,LPWSTR);
BOOL WINAPI WinHttpTimeToSystemTime(LPCWSTR,SYSTEMTIME*);
BOOL WINAPI WinHttpWriteData(HINTERNET,LPCVOID,DWORD,LPDWORD);
#ifdef __cplusplus
}
#endif
#include <poppack.h>
#endif /* __WINE_WINHTTP_H */
#else
#include_next <winhttp.h>
#endif
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/winhttp/urlmon.h
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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#if defined(__MINGW_VERSION) || defined(__MINGW32_VERSION)
#ifndef __CUSTOM_URLMON_H
#define __CUSTOM_URLMON_H
typedef struct IInternetSecurityManager IInternetSecurityManager;
typedef struct IInternetSecurityManagerVtbl
{
HRESULT(STDMETHODCALLTYPE *QueryInterface)(IInternetSecurityManager *, REFIID, void **);
ULONG(STDMETHODCALLTYPE *AddRef)(IInternetSecurityManager *);
ULONG(STDMETHODCALLTYPE *Release)(IInternetSecurityManager *);
LPVOID SetSecuritySite;
LPVOID GetSecuritySite;
HRESULT(STDMETHODCALLTYPE *MapUrlToZone)(IInternetSecurityManager *, LPCWSTR, DWORD *, DWORD);
LPVOID GetSecurityId;
LPVOID ProcessUrlAction;
LPVOID QueryCustomPolicy;
LPVOID SetZoneMapping;
LPVOID GetZoneMappings;
} IInternetSecurityManagerVtbl;
struct IInternetSecurityManager
{
CONST_VTBL struct IInternetSecurityManagerVtbl *lpVtbl;
};
#define URLZONE_LOCAL_MACHINE 0
#define URLZONE_INTRANET 1
#define URLZONE_TRUSTED 2
#endif /* __CUSTOM_URLMON_H */
#else
#include_next <urlmon.h>
#endif
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/winhttp/CMakeLists.txt
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FIND_PROGRAM(DLLTOOL dlltool CMAKE_FIND_ROOT_PATH_BOTH)
IF (NOT DLLTOOL)
MESSAGE(FATAL_ERROR "Could not find dlltool command")
ENDIF ()
SET(LIBWINHTTP_PATH "${libgit2_BINARY_DIR}/deps/winhttp")
SET(LIBWINHTTP_PATH ${LIBWINHTTP_PATH} PARENT_SCOPE)
FILE(MAKE_DIRECTORY ${LIBWINHTTP_PATH})
IF (CMAKE_SIZEOF_VOID_P EQUAL 8)
set(WINHTTP_DEF "winhttp64.def")
ELSE()
set(WINHTTP_DEF "winhttp.def")
ENDIF()
ADD_CUSTOM_COMMAND(
OUTPUT ${LIBWINHTTP_PATH}/libwinhttp.a
COMMAND ${DLLTOOL} -d ${WINHTTP_DEF} -k -D winhttp.dll -l libwinhttp.a
DEPENDS ${WINHTTP_DEF}
WORKING_DIRECTORY ${LIBWINHTTP_PATH}
)
SET_SOURCE_FILES_PROPERTIES(
${CMAKE_CURRENT_SOURCE_DIR}/src/transports/winhttp.c
PROPERTIES OBJECT_DEPENDS ${LIBWINHTTP_PATH}/libwinhttp.a
)
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/winhttp/winhttp64.def
|
LIBRARY WINHTTP
EXPORTS
WinHttpAddRequestHeaders
WinHttpCheckPlatform
WinHttpCloseHandle
WinHttpConnect
WinHttpCrackUrl
WinHttpCreateUrl
WinHttpDetectAutoProxyConfigUrl
WinHttpGetDefaultProxyConfiguration
WinHttpGetIEProxyConfigForCurrentUser
WinHttpGetProxyForUrl
WinHttpOpen
WinHttpOpenRequest
WinHttpQueryAuthSchemes
WinHttpQueryDataAvailable
WinHttpQueryHeaders
WinHttpQueryOption
WinHttpReadData
WinHttpReceiveResponse
WinHttpSendRequest
WinHttpSetCredentials
WinHttpSetDefaultProxyConfiguration
WinHttpSetOption
WinHttpSetStatusCallback
WinHttpSetTimeouts
WinHttpTimeFromSystemTime
WinHttpTimeToSystemTime
WinHttpWriteData
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/winhttp/winhttp.def
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LIBRARY WINHTTP
EXPORTS
WinHttpAddRequestHeaders@16
WinHttpCheckPlatform@0
WinHttpCloseHandle@4
WinHttpConnect@16
WinHttpCrackUrl@16
WinHttpCreateUrl@16
WinHttpDetectAutoProxyConfigUrl@8
WinHttpGetDefaultProxyConfiguration@4
WinHttpGetIEProxyConfigForCurrentUser@4
WinHttpGetProxyForUrl@16
WinHttpOpen@20
WinHttpOpenRequest@28
WinHttpQueryAuthSchemes@16
WinHttpQueryDataAvailable@8
WinHttpQueryHeaders@24
WinHttpQueryOption@16
WinHttpReadData@16
WinHttpReceiveResponse@8
WinHttpSendRequest@28
WinHttpSetCredentials@24
WinHttpSetDefaultProxyConfiguration@4
WinHttpSetOption@16
WinHttpSetStatusCallback@16
WinHttpSetTimeouts@20
WinHttpTimeFromSystemTime@8
WinHttpTimeToSystemTime@8
WinHttpWriteData@16
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/http-parser/CMakeLists.txt
|
file(GLOB SRC_HTTP "*.c" "*.h")
list(SORT SRC_HTTP)
add_library(http-parser OBJECT ${SRC_HTTP})
enable_warnings(implicit-fallthrough=1)
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/http-parser/http_parser.h
|
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef http_parser_h
#define http_parser_h
#ifdef __cplusplus
extern "C" {
#endif
#define HTTP_PARSER_VERSION_MAJOR 2
#define HTTP_PARSER_VERSION_MINOR 0
#include <sys/types.h>
#if defined(_WIN32) && !defined(__MINGW32__) && (!defined(_MSC_VER) || _MSC_VER<1600)
#include <BaseTsd.h>
typedef __int8 int8_t;
typedef unsigned __int8 uint8_t;
typedef __int16 int16_t;
typedef unsigned __int16 uint16_t;
typedef __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
typedef SIZE_T size_t;
typedef SSIZE_T ssize_t;
#elif defined(__sun) || defined(__sun__)
#include <sys/inttypes.h>
#else
#include <stdint.h>
#endif
/* Compile with -DHTTP_PARSER_STRICT=0 to make less checks, but run
* faster
*/
#ifndef HTTP_PARSER_STRICT
# define HTTP_PARSER_STRICT 1
#endif
/* Maximium header size allowed */
#define HTTP_MAX_HEADER_SIZE (80*1024)
typedef struct http_parser http_parser;
typedef struct http_parser_settings http_parser_settings;
/* Callbacks should return non-zero to indicate an error. The parser will
* then halt execution.
*
* The one exception is on_headers_complete. In a HTTP_RESPONSE parser
* returning '1' from on_headers_complete will tell the parser that it
* should not expect a body. This is used when receiving a response to a
* HEAD request which may contain 'Content-Length' or 'Transfer-Encoding:
* chunked' headers that indicate the presence of a body.
*
* http_data_cb does not return data chunks. It will be call arbitrarally
* many times for each string. E.G. you might get 10 callbacks for "on_url"
* each providing just a few characters more data.
*/
typedef int (*http_data_cb) (http_parser*, const char *at, size_t length);
typedef int (*http_cb) (http_parser*);
/* Request Methods */
#define HTTP_METHOD_MAP(XX) \
XX(0, DELETE, DELETE) \
XX(1, GET, GET) \
XX(2, HEAD, HEAD) \
XX(3, POST, POST) \
XX(4, PUT, PUT) \
/* pathological */ \
XX(5, CONNECT, CONNECT) \
XX(6, OPTIONS, OPTIONS) \
XX(7, TRACE, TRACE) \
/* webdav */ \
XX(8, COPY, COPY) \
XX(9, LOCK, LOCK) \
XX(10, MKCOL, MKCOL) \
XX(11, MOVE, MOVE) \
XX(12, PROPFIND, PROPFIND) \
XX(13, PROPPATCH, PROPPATCH) \
XX(14, SEARCH, SEARCH) \
XX(15, UNLOCK, UNLOCK) \
/* subversion */ \
XX(16, REPORT, REPORT) \
XX(17, MKACTIVITY, MKACTIVITY) \
XX(18, CHECKOUT, CHECKOUT) \
XX(19, MERGE, MERGE) \
/* upnp */ \
XX(20, MSEARCH, M-SEARCH) \
XX(21, NOTIFY, NOTIFY) \
XX(22, SUBSCRIBE, SUBSCRIBE) \
XX(23, UNSUBSCRIBE, UNSUBSCRIBE) \
/* RFC-5789 */ \
XX(24, PATCH, PATCH) \
XX(25, PURGE, PURGE) \
enum http_method
{
#define XX(num, name, string) HTTP_##name = num,
HTTP_METHOD_MAP(XX)
#undef XX
};
enum http_parser_type { HTTP_REQUEST, HTTP_RESPONSE, HTTP_BOTH };
/* Flag values for http_parser.flags field */
enum flags
{ F_CHUNKED = 1 << 0
, F_CONNECTION_KEEP_ALIVE = 1 << 1
, F_CONNECTION_CLOSE = 1 << 2
, F_TRAILING = 1 << 3
, F_UPGRADE = 1 << 4
, F_SKIPBODY = 1 << 5
};
/* Map for errno-related constants
*
* The provided argument should be a macro that takes 2 arguments.
*/
#define HTTP_ERRNO_MAP(XX) \
/* No error */ \
XX(OK, "success") \
\
/* Callback-related errors */ \
XX(CB_message_begin, "the on_message_begin callback failed") \
XX(CB_url, "the on_url callback failed") \
XX(CB_header_field, "the on_header_field callback failed") \
XX(CB_header_value, "the on_header_value callback failed") \
XX(CB_headers_complete, "the on_headers_complete callback failed") \
XX(CB_body, "the on_body callback failed") \
XX(CB_message_complete, "the on_message_complete callback failed") \
\
/* Parsing-related errors */ \
XX(INVALID_EOF_STATE, "stream ended at an unexpected time") \
XX(HEADER_OVERFLOW, \
"too many header bytes seen; overflow detected") \
XX(CLOSED_CONNECTION, \
"data received after completed connection: close message") \
XX(INVALID_VERSION, "invalid HTTP version") \
XX(INVALID_STATUS, "invalid HTTP status code") \
XX(INVALID_METHOD, "invalid HTTP method") \
XX(INVALID_URL, "invalid URL") \
XX(INVALID_HOST, "invalid host") \
XX(INVALID_PORT, "invalid port") \
XX(INVALID_PATH, "invalid path") \
XX(INVALID_QUERY_STRING, "invalid query string") \
XX(INVALID_FRAGMENT, "invalid fragment") \
XX(LF_EXPECTED, "LF character expected") \
XX(INVALID_HEADER_TOKEN, "invalid character in header") \
XX(INVALID_CONTENT_LENGTH, \
"invalid character in content-length header") \
XX(INVALID_CHUNK_SIZE, \
"invalid character in chunk size header") \
XX(INVALID_CONSTANT, "invalid constant string") \
XX(INVALID_INTERNAL_STATE, "encountered unexpected internal state")\
XX(STRICT, "strict mode assertion failed") \
XX(PAUSED, "parser is paused") \
XX(UNKNOWN, "an unknown error occurred")
/* Define HPE_* values for each errno value above */
#define HTTP_ERRNO_GEN(n, s) HPE_##n,
enum http_errno {
HTTP_ERRNO_MAP(HTTP_ERRNO_GEN)
};
#undef HTTP_ERRNO_GEN
/* Get an http_errno value from an http_parser */
#define HTTP_PARSER_ERRNO(p) ((enum http_errno) (p)->http_errno)
struct http_parser {
/** PRIVATE **/
unsigned char type : 2; /* enum http_parser_type */
unsigned char flags : 6; /* F_* values from 'flags' enum; semi-public */
unsigned char state; /* enum state from http_parser.c */
unsigned char header_state; /* enum header_state from http_parser.c */
unsigned char index; /* index into current matcher */
uint32_t nread; /* # bytes read in various scenarios */
uint64_t content_length; /* # bytes in body (0 if no Content-Length header) */
/** READ-ONLY **/
unsigned short http_major;
unsigned short http_minor;
unsigned short status_code; /* responses only */
unsigned char method; /* requests only */
unsigned char http_errno : 7;
/* 1 = Upgrade header was present and the parser has exited because of that.
* 0 = No upgrade header present.
* Should be checked when http_parser_execute() returns in addition to
* error checking.
*/
unsigned char upgrade : 1;
/** PUBLIC **/
void *data; /* A pointer to get hook to the "connection" or "socket" object */
};
struct http_parser_settings {
http_cb on_message_begin;
http_data_cb on_url;
http_data_cb on_header_field;
http_data_cb on_header_value;
http_cb on_headers_complete;
http_data_cb on_body;
http_cb on_message_complete;
};
enum http_parser_url_fields
{ UF_SCHEMA = 0
, UF_HOST = 1
, UF_PORT = 2
, UF_PATH = 3
, UF_QUERY = 4
, UF_FRAGMENT = 5
, UF_USERINFO = 6
, UF_MAX = 7
};
/* Result structure for http_parser_parse_url().
*
* Callers should index into field_data[] with UF_* values iff field_set
* has the relevant (1 << UF_*) bit set. As a courtesy to clients (and
* because we probably have padding left over), we convert any port to
* a uint16_t.
*/
struct http_parser_url {
uint16_t field_set; /* Bitmask of (1 << UF_*) values */
uint16_t port; /* Converted UF_PORT string */
struct {
uint16_t off; /* Offset into buffer in which field starts */
uint16_t len; /* Length of run in buffer */
} field_data[UF_MAX];
};
void http_parser_init(http_parser *parser, enum http_parser_type type);
size_t http_parser_execute(http_parser *parser,
const http_parser_settings *settings,
const char *data,
size_t len);
/* If http_should_keep_alive() in the on_headers_complete or
* on_message_complete callback returns 0, then this should be
* the last message on the connection.
* If you are the server, respond with the "Connection: close" header.
* If you are the client, close the connection.
*/
int http_should_keep_alive(const http_parser *parser);
/* Returns a string version of the HTTP method. */
const char *http_method_str(enum http_method m);
/* Return a string name of the given error */
const char *http_errno_name(enum http_errno err);
/* Return a string description of the given error */
const char *http_errno_description(enum http_errno err);
/* Parse a URL; return nonzero on failure */
int http_parser_parse_url(const char *buf, size_t buflen,
int is_connect,
struct http_parser_url *u);
/* Pause or un-pause the parser; a nonzero value pauses */
void http_parser_pause(http_parser *parser, int paused);
/* Checks if this is the final chunk of the body. */
int http_body_is_final(const http_parser *parser);
#ifdef __cplusplus
}
#endif
#endif
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repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/deps/http-parser/http_parser.c
|
/* Based on src/http/ngx_http_parse.c from NGINX copyright Igor Sysoev
*
* Additional changes are licensed under the same terms as NGINX and
* copyright Joyent, Inc. and other Node contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "http_parser.h"
#include <assert.h>
#include <stddef.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#ifndef ULLONG_MAX
# define ULLONG_MAX ((uint64_t) -1) /* 2^64-1 */
#endif
#ifndef MIN
# define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
#ifndef ARRAY_SIZE
# define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#endif
#ifndef BIT_AT
# define BIT_AT(a, i) \
(!!((unsigned int) (a)[(unsigned int) (i) >> 3] & \
(1 << ((unsigned int) (i) & 7))))
#endif
#ifndef ELEM_AT
# define ELEM_AT(a, i, v) ((unsigned int) (i) < ARRAY_SIZE(a) ? (a)[(i)] : (v))
#endif
#define SET_ERRNO(e) \
do { \
parser->http_errno = (e); \
} while(0)
/* Run the notify callback FOR, returning ER if it fails */
#define CALLBACK_NOTIFY_(FOR, ER) \
do { \
assert(HTTP_PARSER_ERRNO(parser) == HPE_OK); \
\
if (settings->on_##FOR) { \
if (0 != settings->on_##FOR(parser)) { \
SET_ERRNO(HPE_CB_##FOR); \
} \
\
/* We either errored above or got paused; get out */ \
if (HTTP_PARSER_ERRNO(parser) != HPE_OK) { \
return (ER); \
} \
} \
} while (0)
/* Run the notify callback FOR and consume the current byte */
#define CALLBACK_NOTIFY(FOR) CALLBACK_NOTIFY_(FOR, p - data + 1)
/* Run the notify callback FOR and don't consume the current byte */
#define CALLBACK_NOTIFY_NOADVANCE(FOR) CALLBACK_NOTIFY_(FOR, p - data)
/* Run data callback FOR with LEN bytes, returning ER if it fails */
#define CALLBACK_DATA_(FOR, LEN, ER) \
do { \
assert(HTTP_PARSER_ERRNO(parser) == HPE_OK); \
\
if (FOR##_mark) { \
if (settings->on_##FOR) { \
if (0 != settings->on_##FOR(parser, FOR##_mark, (LEN))) { \
SET_ERRNO(HPE_CB_##FOR); \
} \
\
/* We either errored above or got paused; get out */ \
if (HTTP_PARSER_ERRNO(parser) != HPE_OK) { \
return (ER); \
} \
} \
FOR##_mark = NULL; \
} \
} while (0)
/* Run the data callback FOR and consume the current byte */
#define CALLBACK_DATA(FOR) \
CALLBACK_DATA_(FOR, p - FOR##_mark, p - data + 1)
/* Run the data callback FOR and don't consume the current byte */
#define CALLBACK_DATA_NOADVANCE(FOR) \
CALLBACK_DATA_(FOR, p - FOR##_mark, p - data)
/* Set the mark FOR; non-destructive if mark is already set */
#define MARK(FOR) \
do { \
if (!FOR##_mark) { \
FOR##_mark = p; \
} \
} while (0)
#define PROXY_CONNECTION "proxy-connection"
#define CONNECTION "connection"
#define CONTENT_LENGTH "content-length"
#define TRANSFER_ENCODING "transfer-encoding"
#define UPGRADE "upgrade"
#define CHUNKED "chunked"
#define KEEP_ALIVE "keep-alive"
#define CLOSE "close"
static const char *method_strings[] =
{
#define XX(num, name, string) #string,
HTTP_METHOD_MAP(XX)
#undef XX
};
/* Tokens as defined by rfc 2616. Also lowercases them.
* token = 1*<any CHAR except CTLs or separators>
* separators = "(" | ")" | "<" | ">" | "@"
* | "," | ";" | ":" | "\" | <">
* | "/" | "[" | "]" | "?" | "="
* | "{" | "}" | SP | HT
*/
static const char tokens[256] = {
/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
0, 0, 0, 0, 0, 0, 0, 0,
/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
0, 0, 0, 0, 0, 0, 0, 0,
/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
0, 0, 0, 0, 0, 0, 0, 0,
/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
0, 0, 0, 0, 0, 0, 0, 0,
/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
0, '!', 0, '#', '$', '%', '&', '\'',
/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
0, 0, '*', '+', 0, '-', '.', 0,
/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
'0', '1', '2', '3', '4', '5', '6', '7',
/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
'8', '9', 0, 0, 0, 0, 0, 0,
/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
0, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
'x', 'y', 'z', 0, 0, 0, '^', '_',
/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
'x', 'y', 'z', 0, '|', 0, '~', 0 };
static const int8_t unhex[256] =
{-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1
,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
};
#if HTTP_PARSER_STRICT
# define T(v) 0
#else
# define T(v) v
#endif
static const uint8_t normal_url_char[32] = {
/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
0 | T(2) | 0 | 0 | T(16) | 0 | 0 | 0,
/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
0 | 2 | 4 | 0 | 16 | 32 | 64 | 128,
/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 0,
/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
1 | 2 | 4 | 8 | 16 | 32 | 64 | 0, };
#undef T
enum state
{ s_dead = 1 /* important that this is > 0 */
, s_start_req_or_res
, s_res_or_resp_H
, s_start_res
, s_res_H
, s_res_HT
, s_res_HTT
, s_res_HTTP
, s_res_first_http_major
, s_res_http_major
, s_res_first_http_minor
, s_res_http_minor
, s_res_first_status_code
, s_res_status_code
, s_res_status
, s_res_line_almost_done
, s_start_req
, s_req_method
, s_req_spaces_before_url
, s_req_schema
, s_req_schema_slash
, s_req_schema_slash_slash
, s_req_server_start
, s_req_server
, s_req_server_with_at
, s_req_path
, s_req_query_string_start
, s_req_query_string
, s_req_fragment_start
, s_req_fragment
, s_req_http_start
, s_req_http_H
, s_req_http_HT
, s_req_http_HTT
, s_req_http_HTTP
, s_req_first_http_major
, s_req_http_major
, s_req_first_http_minor
, s_req_http_minor
, s_req_line_almost_done
, s_header_field_start
, s_header_field
, s_header_value_start
, s_header_value
, s_header_value_lws
, s_header_almost_done
, s_chunk_size_start
, s_chunk_size
, s_chunk_parameters
, s_chunk_size_almost_done
, s_headers_almost_done
, s_headers_done
/* Important: 's_headers_done' must be the last 'header' state. All
* states beyond this must be 'body' states. It is used for overflow
* checking. See the PARSING_HEADER() macro.
*/
, s_chunk_data
, s_chunk_data_almost_done
, s_chunk_data_done
, s_body_identity
, s_body_identity_eof
, s_message_done
};
#define PARSING_HEADER(state) (state <= s_headers_done)
enum header_states
{ h_general = 0
, h_C
, h_CO
, h_CON
, h_matching_connection
, h_matching_proxy_connection
, h_matching_content_length
, h_matching_transfer_encoding
, h_matching_upgrade
, h_connection
, h_content_length
, h_transfer_encoding
, h_upgrade
, h_matching_transfer_encoding_chunked
, h_matching_connection_keep_alive
, h_matching_connection_close
, h_transfer_encoding_chunked
, h_connection_keep_alive
, h_connection_close
};
enum http_host_state
{
s_http_host_dead = 1
, s_http_userinfo_start
, s_http_userinfo
, s_http_host_start
, s_http_host_v6_start
, s_http_host
, s_http_host_v6
, s_http_host_v6_end
, s_http_host_port_start
, s_http_host_port
};
/* Macros for character classes; depends on strict-mode */
#define CR '\r'
#define LF '\n'
#define LOWER(c) (unsigned char)(c | 0x20)
#define IS_ALPHA(c) (LOWER(c) >= 'a' && LOWER(c) <= 'z')
#define IS_NUM(c) ((c) >= '0' && (c) <= '9')
#define IS_ALPHANUM(c) (IS_ALPHA(c) || IS_NUM(c))
#define IS_HEX(c) (IS_NUM(c) || (LOWER(c) >= 'a' && LOWER(c) <= 'f'))
#define IS_MARK(c) ((c) == '-' || (c) == '_' || (c) == '.' || \
(c) == '!' || (c) == '~' || (c) == '*' || (c) == '\'' || (c) == '(' || \
(c) == ')')
#define IS_USERINFO_CHAR(c) (IS_ALPHANUM(c) || IS_MARK(c) || (c) == '%' || \
(c) == ';' || (c) == ':' || (c) == '&' || (c) == '=' || (c) == '+' || \
(c) == '$' || (c) == ',')
#if HTTP_PARSER_STRICT
#define TOKEN(c) (tokens[(unsigned char)c])
#define IS_URL_CHAR(c) (BIT_AT(normal_url_char, (unsigned char)c))
#define IS_HOST_CHAR(c) (IS_ALPHANUM(c) || (c) == '.' || (c) == '-')
#else
#define TOKEN(c) ((c == ' ') ? ' ' : tokens[(unsigned char)c])
#define IS_URL_CHAR(c) \
(BIT_AT(normal_url_char, (unsigned char)c) || ((c) & 0x80))
#define IS_HOST_CHAR(c) \
(IS_ALPHANUM(c) || (c) == '.' || (c) == '-' || (c) == '_')
#endif
#define start_state (parser->type == HTTP_REQUEST ? s_start_req : s_start_res)
#if HTTP_PARSER_STRICT
# define STRICT_CHECK(cond) \
do { \
if (cond) { \
SET_ERRNO(HPE_STRICT); \
goto error; \
} \
} while (0)
# define NEW_MESSAGE() (http_should_keep_alive(parser) ? start_state : s_dead)
#else
# define STRICT_CHECK(cond)
# define NEW_MESSAGE() start_state
#endif
/* Map errno values to strings for human-readable output */
#define HTTP_STRERROR_GEN(n, s) { "HPE_" #n, s },
static struct {
const char *name;
const char *description;
} http_strerror_tab[] = {
HTTP_ERRNO_MAP(HTTP_STRERROR_GEN)
};
#undef HTTP_STRERROR_GEN
int http_message_needs_eof(const http_parser *parser);
/* Our URL parser.
*
* This is designed to be shared by http_parser_execute() for URL validation,
* hence it has a state transition + byte-for-byte interface. In addition, it
* is meant to be embedded in http_parser_parse_url(), which does the dirty
* work of turning state transitions URL components for its API.
*
* This function should only be invoked with non-space characters. It is
* assumed that the caller cares about (and can detect) the transition between
* URL and non-URL states by looking for these.
*/
static enum state
parse_url_char(enum state s, const char ch)
{
if (ch == ' ' || ch == '\r' || ch == '\n') {
return s_dead;
}
#if HTTP_PARSER_STRICT
if (ch == '\t' || ch == '\f') {
return s_dead;
}
#endif
switch (s) {
case s_req_spaces_before_url:
/* Proxied requests are followed by scheme of an absolute URI (alpha).
* All methods except CONNECT are followed by '/' or '*'.
*/
if (ch == '/' || ch == '*') {
return s_req_path;
}
/* The schema must start with an alpha character. After that, it may
* consist of digits, '+', '-' or '.', followed by a ':'.
*/
if (IS_ALPHA(ch)) {
return s_req_schema;
}
break;
case s_req_schema:
if (IS_ALPHANUM(ch) || ch == '+' || ch == '-' || ch == '.') {
return s;
}
if (ch == ':') {
return s_req_schema_slash;
}
break;
case s_req_schema_slash:
if (ch == '/') {
return s_req_schema_slash_slash;
}
break;
case s_req_schema_slash_slash:
if (ch == '/') {
return s_req_server_start;
}
break;
case s_req_server_with_at:
if (ch == '@') {
return s_dead;
}
/* FALLTHROUGH */
case s_req_server_start:
case s_req_server:
if (ch == '/') {
return s_req_path;
}
if (ch == '?') {
return s_req_query_string_start;
}
if (ch == '@') {
return s_req_server_with_at;
}
if (IS_USERINFO_CHAR(ch) || ch == '[' || ch == ']') {
return s_req_server;
}
break;
case s_req_path:
if (IS_URL_CHAR(ch)) {
return s;
}
switch (ch) {
case '?':
return s_req_query_string_start;
case '#':
return s_req_fragment_start;
}
break;
case s_req_query_string_start:
case s_req_query_string:
if (IS_URL_CHAR(ch)) {
return s_req_query_string;
}
switch (ch) {
case '?':
/* allow extra '?' in query string */
return s_req_query_string;
case '#':
return s_req_fragment_start;
}
break;
case s_req_fragment_start:
if (IS_URL_CHAR(ch)) {
return s_req_fragment;
}
switch (ch) {
case '?':
return s_req_fragment;
case '#':
return s;
}
break;
case s_req_fragment:
if (IS_URL_CHAR(ch)) {
return s;
}
switch (ch) {
case '?':
case '#':
return s;
}
break;
default:
break;
}
/* We should never fall out of the switch above unless there's an error */
return s_dead;
}
size_t http_parser_execute (http_parser *parser,
const http_parser_settings *settings,
const char *data,
size_t len)
{
char c, ch;
int8_t unhex_val;
const char *p = data;
const char *header_field_mark = 0;
const char *header_value_mark = 0;
const char *url_mark = 0;
const char *body_mark = 0;
/* We're in an error state. Don't bother doing anything. */
if (HTTP_PARSER_ERRNO(parser) != HPE_OK) {
return 0;
}
if (len == 0) {
switch (parser->state) {
case s_body_identity_eof:
/* Use of CALLBACK_NOTIFY() here would erroneously return 1 byte read if
* we got paused.
*/
CALLBACK_NOTIFY_NOADVANCE(message_complete);
return 0;
case s_dead:
case s_start_req_or_res:
case s_start_res:
case s_start_req:
return 0;
default:
SET_ERRNO(HPE_INVALID_EOF_STATE);
return 1;
}
}
if (parser->state == s_header_field)
header_field_mark = data;
if (parser->state == s_header_value)
header_value_mark = data;
switch (parser->state) {
case s_req_path:
case s_req_schema:
case s_req_schema_slash:
case s_req_schema_slash_slash:
case s_req_server_start:
case s_req_server:
case s_req_server_with_at:
case s_req_query_string_start:
case s_req_query_string:
case s_req_fragment_start:
case s_req_fragment:
url_mark = data;
break;
}
for (p=data; p != data + len; p++) {
ch = *p;
if (PARSING_HEADER(parser->state)) {
++parser->nread;
/* Buffer overflow attack */
if (parser->nread > HTTP_MAX_HEADER_SIZE) {
SET_ERRNO(HPE_HEADER_OVERFLOW);
goto error;
}
}
reexecute_byte:
switch (parser->state) {
case s_dead:
/* this state is used after a 'Connection: close' message
* the parser will error out if it reads another message
*/
if (ch == CR || ch == LF)
break;
SET_ERRNO(HPE_CLOSED_CONNECTION);
goto error;
case s_start_req_or_res:
{
if (ch == CR || ch == LF)
break;
parser->flags = 0;
parser->content_length = ULLONG_MAX;
if (ch == 'H') {
parser->state = s_res_or_resp_H;
CALLBACK_NOTIFY(message_begin);
} else {
parser->type = HTTP_REQUEST;
parser->state = s_start_req;
goto reexecute_byte;
}
break;
}
case s_res_or_resp_H:
if (ch == 'T') {
parser->type = HTTP_RESPONSE;
parser->state = s_res_HT;
} else {
if (ch != 'E') {
SET_ERRNO(HPE_INVALID_CONSTANT);
goto error;
}
parser->type = HTTP_REQUEST;
parser->method = HTTP_HEAD;
parser->index = 2;
parser->state = s_req_method;
}
break;
case s_start_res:
{
parser->flags = 0;
parser->content_length = ULLONG_MAX;
switch (ch) {
case 'H':
parser->state = s_res_H;
break;
case CR:
case LF:
break;
default:
SET_ERRNO(HPE_INVALID_CONSTANT);
goto error;
}
CALLBACK_NOTIFY(message_begin);
break;
}
case s_res_H:
STRICT_CHECK(ch != 'T');
parser->state = s_res_HT;
break;
case s_res_HT:
STRICT_CHECK(ch != 'T');
parser->state = s_res_HTT;
break;
case s_res_HTT:
STRICT_CHECK(ch != 'P');
parser->state = s_res_HTTP;
break;
case s_res_HTTP:
STRICT_CHECK(ch != '/');
parser->state = s_res_first_http_major;
break;
case s_res_first_http_major:
if (ch < '0' || ch > '9') {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
parser->http_major = ch - '0';
parser->state = s_res_http_major;
break;
/* major HTTP version or dot */
case s_res_http_major:
{
if (ch == '.') {
parser->state = s_res_first_http_minor;
break;
}
if (!IS_NUM(ch)) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
parser->http_major *= 10;
parser->http_major += ch - '0';
if (parser->http_major > 999) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
break;
}
/* first digit of minor HTTP version */
case s_res_first_http_minor:
if (!IS_NUM(ch)) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
parser->http_minor = ch - '0';
parser->state = s_res_http_minor;
break;
/* minor HTTP version or end of request line */
case s_res_http_minor:
{
if (ch == ' ') {
parser->state = s_res_first_status_code;
break;
}
if (!IS_NUM(ch)) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
parser->http_minor *= 10;
parser->http_minor += ch - '0';
if (parser->http_minor > 999) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
break;
}
case s_res_first_status_code:
{
if (!IS_NUM(ch)) {
if (ch == ' ') {
break;
}
SET_ERRNO(HPE_INVALID_STATUS);
goto error;
}
parser->status_code = ch - '0';
parser->state = s_res_status_code;
break;
}
case s_res_status_code:
{
if (!IS_NUM(ch)) {
switch (ch) {
case ' ':
parser->state = s_res_status;
break;
case CR:
parser->state = s_res_line_almost_done;
break;
case LF:
parser->state = s_header_field_start;
break;
default:
SET_ERRNO(HPE_INVALID_STATUS);
goto error;
}
break;
}
parser->status_code *= 10;
parser->status_code += ch - '0';
if (parser->status_code > 999) {
SET_ERRNO(HPE_INVALID_STATUS);
goto error;
}
break;
}
case s_res_status:
/* the human readable status. e.g. "NOT FOUND"
* we are not humans so just ignore this */
if (ch == CR) {
parser->state = s_res_line_almost_done;
break;
}
if (ch == LF) {
parser->state = s_header_field_start;
break;
}
break;
case s_res_line_almost_done:
STRICT_CHECK(ch != LF);
parser->state = s_header_field_start;
break;
case s_start_req:
{
if (ch == CR || ch == LF)
break;
parser->flags = 0;
parser->content_length = ULLONG_MAX;
if (!IS_ALPHA(ch)) {
SET_ERRNO(HPE_INVALID_METHOD);
goto error;
}
parser->method = (enum http_method) 0;
parser->index = 1;
switch (ch) {
case 'C': parser->method = HTTP_CONNECT; /* or COPY, CHECKOUT */ break;
case 'D': parser->method = HTTP_DELETE; break;
case 'G': parser->method = HTTP_GET; break;
case 'H': parser->method = HTTP_HEAD; break;
case 'L': parser->method = HTTP_LOCK; break;
case 'M': parser->method = HTTP_MKCOL; /* or MOVE, MKACTIVITY, MERGE, M-SEARCH */ break;
case 'N': parser->method = HTTP_NOTIFY; break;
case 'O': parser->method = HTTP_OPTIONS; break;
case 'P': parser->method = HTTP_POST;
/* or PROPFIND|PROPPATCH|PUT|PATCH|PURGE */
break;
case 'R': parser->method = HTTP_REPORT; break;
case 'S': parser->method = HTTP_SUBSCRIBE; /* or SEARCH */ break;
case 'T': parser->method = HTTP_TRACE; break;
case 'U': parser->method = HTTP_UNLOCK; /* or UNSUBSCRIBE */ break;
default:
SET_ERRNO(HPE_INVALID_METHOD);
goto error;
}
parser->state = s_req_method;
CALLBACK_NOTIFY(message_begin);
break;
}
case s_req_method:
{
const char *matcher;
if (ch == '\0') {
SET_ERRNO(HPE_INVALID_METHOD);
goto error;
}
matcher = method_strings[parser->method];
if (ch == ' ' && matcher[parser->index] == '\0') {
parser->state = s_req_spaces_before_url;
} else if (ch == matcher[parser->index]) {
; /* nada */
} else if (parser->method == HTTP_CONNECT) {
if (parser->index == 1 && ch == 'H') {
parser->method = HTTP_CHECKOUT;
} else if (parser->index == 2 && ch == 'P') {
parser->method = HTTP_COPY;
} else {
goto error;
}
} else if (parser->method == HTTP_MKCOL) {
if (parser->index == 1 && ch == 'O') {
parser->method = HTTP_MOVE;
} else if (parser->index == 1 && ch == 'E') {
parser->method = HTTP_MERGE;
} else if (parser->index == 1 && ch == '-') {
parser->method = HTTP_MSEARCH;
} else if (parser->index == 2 && ch == 'A') {
parser->method = HTTP_MKACTIVITY;
} else {
goto error;
}
} else if (parser->method == HTTP_SUBSCRIBE) {
if (parser->index == 1 && ch == 'E') {
parser->method = HTTP_SEARCH;
} else {
goto error;
}
} else if (parser->index == 1 && parser->method == HTTP_POST) {
if (ch == 'R') {
parser->method = HTTP_PROPFIND; /* or HTTP_PROPPATCH */
} else if (ch == 'U') {
parser->method = HTTP_PUT; /* or HTTP_PURGE */
} else if (ch == 'A') {
parser->method = HTTP_PATCH;
} else {
goto error;
}
} else if (parser->index == 2) {
if (parser->method == HTTP_PUT) {
if (ch == 'R') parser->method = HTTP_PURGE;
} else if (parser->method == HTTP_UNLOCK) {
if (ch == 'S') parser->method = HTTP_UNSUBSCRIBE;
}
} else if (parser->index == 4 && parser->method == HTTP_PROPFIND && ch == 'P') {
parser->method = HTTP_PROPPATCH;
} else {
SET_ERRNO(HPE_INVALID_METHOD);
goto error;
}
++parser->index;
break;
}
case s_req_spaces_before_url:
{
if (ch == ' ') break;
MARK(url);
if (parser->method == HTTP_CONNECT) {
parser->state = s_req_server_start;
}
parser->state = parse_url_char((enum state)parser->state, ch);
if (parser->state == s_dead) {
SET_ERRNO(HPE_INVALID_URL);
goto error;
}
break;
}
case s_req_schema:
case s_req_schema_slash:
case s_req_schema_slash_slash:
case s_req_server_start:
{
switch (ch) {
/* No whitespace allowed here */
case ' ':
case CR:
case LF:
SET_ERRNO(HPE_INVALID_URL);
goto error;
default:
parser->state = parse_url_char((enum state)parser->state, ch);
if (parser->state == s_dead) {
SET_ERRNO(HPE_INVALID_URL);
goto error;
}
}
break;
}
case s_req_server:
case s_req_server_with_at:
case s_req_path:
case s_req_query_string_start:
case s_req_query_string:
case s_req_fragment_start:
case s_req_fragment:
{
switch (ch) {
case ' ':
parser->state = s_req_http_start;
CALLBACK_DATA(url);
break;
case CR:
case LF:
parser->http_major = 0;
parser->http_minor = 9;
parser->state = (ch == CR) ?
s_req_line_almost_done :
s_header_field_start;
CALLBACK_DATA(url);
break;
default:
parser->state = parse_url_char((enum state)parser->state, ch);
if (parser->state == s_dead) {
SET_ERRNO(HPE_INVALID_URL);
goto error;
}
}
break;
}
case s_req_http_start:
switch (ch) {
case 'H':
parser->state = s_req_http_H;
break;
case ' ':
break;
default:
SET_ERRNO(HPE_INVALID_CONSTANT);
goto error;
}
break;
case s_req_http_H:
STRICT_CHECK(ch != 'T');
parser->state = s_req_http_HT;
break;
case s_req_http_HT:
STRICT_CHECK(ch != 'T');
parser->state = s_req_http_HTT;
break;
case s_req_http_HTT:
STRICT_CHECK(ch != 'P');
parser->state = s_req_http_HTTP;
break;
case s_req_http_HTTP:
STRICT_CHECK(ch != '/');
parser->state = s_req_first_http_major;
break;
/* first digit of major HTTP version */
case s_req_first_http_major:
if (ch < '1' || ch > '9') {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
parser->http_major = ch - '0';
parser->state = s_req_http_major;
break;
/* major HTTP version or dot */
case s_req_http_major:
{
if (ch == '.') {
parser->state = s_req_first_http_minor;
break;
}
if (!IS_NUM(ch)) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
parser->http_major *= 10;
parser->http_major += ch - '0';
if (parser->http_major > 999) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
break;
}
/* first digit of minor HTTP version */
case s_req_first_http_minor:
if (!IS_NUM(ch)) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
parser->http_minor = ch - '0';
parser->state = s_req_http_minor;
break;
/* minor HTTP version or end of request line */
case s_req_http_minor:
{
if (ch == CR) {
parser->state = s_req_line_almost_done;
break;
}
if (ch == LF) {
parser->state = s_header_field_start;
break;
}
/* XXX allow spaces after digit? */
if (!IS_NUM(ch)) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
parser->http_minor *= 10;
parser->http_minor += ch - '0';
if (parser->http_minor > 999) {
SET_ERRNO(HPE_INVALID_VERSION);
goto error;
}
break;
}
/* end of request line */
case s_req_line_almost_done:
{
if (ch != LF) {
SET_ERRNO(HPE_LF_EXPECTED);
goto error;
}
parser->state = s_header_field_start;
break;
}
case s_header_field_start:
{
if (ch == CR) {
parser->state = s_headers_almost_done;
break;
}
if (ch == LF) {
/* they might be just sending \n instead of \r\n so this would be
* the second \n to denote the end of headers*/
parser->state = s_headers_almost_done;
goto reexecute_byte;
}
c = TOKEN(ch);
if (!c) {
SET_ERRNO(HPE_INVALID_HEADER_TOKEN);
goto error;
}
MARK(header_field);
parser->index = 0;
parser->state = s_header_field;
switch (c) {
case 'c':
parser->header_state = h_C;
break;
case 'p':
parser->header_state = h_matching_proxy_connection;
break;
case 't':
parser->header_state = h_matching_transfer_encoding;
break;
case 'u':
parser->header_state = h_matching_upgrade;
break;
default:
parser->header_state = h_general;
break;
}
break;
}
case s_header_field:
{
c = TOKEN(ch);
if (c) {
switch (parser->header_state) {
case h_general:
break;
case h_C:
parser->index++;
parser->header_state = (c == 'o' ? h_CO : h_general);
break;
case h_CO:
parser->index++;
parser->header_state = (c == 'n' ? h_CON : h_general);
break;
case h_CON:
parser->index++;
switch (c) {
case 'n':
parser->header_state = h_matching_connection;
break;
case 't':
parser->header_state = h_matching_content_length;
break;
default:
parser->header_state = h_general;
break;
}
break;
/* connection */
case h_matching_connection:
parser->index++;
if (parser->index > sizeof(CONNECTION)-1
|| c != CONNECTION[parser->index]) {
parser->header_state = h_general;
} else if (parser->index == sizeof(CONNECTION)-2) {
parser->header_state = h_connection;
}
break;
/* proxy-connection */
case h_matching_proxy_connection:
parser->index++;
if (parser->index > sizeof(PROXY_CONNECTION)-1
|| c != PROXY_CONNECTION[parser->index]) {
parser->header_state = h_general;
} else if (parser->index == sizeof(PROXY_CONNECTION)-2) {
parser->header_state = h_connection;
}
break;
/* content-length */
case h_matching_content_length:
parser->index++;
if (parser->index > sizeof(CONTENT_LENGTH)-1
|| c != CONTENT_LENGTH[parser->index]) {
parser->header_state = h_general;
} else if (parser->index == sizeof(CONTENT_LENGTH)-2) {
parser->header_state = h_content_length;
}
break;
/* transfer-encoding */
case h_matching_transfer_encoding:
parser->index++;
if (parser->index > sizeof(TRANSFER_ENCODING)-1
|| c != TRANSFER_ENCODING[parser->index]) {
parser->header_state = h_general;
} else if (parser->index == sizeof(TRANSFER_ENCODING)-2) {
parser->header_state = h_transfer_encoding;
}
break;
/* upgrade */
case h_matching_upgrade:
parser->index++;
if (parser->index > sizeof(UPGRADE)-1
|| c != UPGRADE[parser->index]) {
parser->header_state = h_general;
} else if (parser->index == sizeof(UPGRADE)-2) {
parser->header_state = h_upgrade;
}
break;
case h_connection:
case h_content_length:
case h_transfer_encoding:
case h_upgrade:
if (ch != ' ') parser->header_state = h_general;
break;
default:
assert(0 && "Unknown header_state");
break;
}
break;
}
if (ch == ':') {
parser->state = s_header_value_start;
CALLBACK_DATA(header_field);
break;
}
if (ch == CR) {
parser->state = s_header_almost_done;
CALLBACK_DATA(header_field);
break;
}
if (ch == LF) {
parser->state = s_header_field_start;
CALLBACK_DATA(header_field);
break;
}
SET_ERRNO(HPE_INVALID_HEADER_TOKEN);
goto error;
}
case s_header_value_start:
{
if (ch == ' ' || ch == '\t') break;
MARK(header_value);
parser->state = s_header_value;
parser->index = 0;
if (ch == CR) {
parser->header_state = h_general;
parser->state = s_header_almost_done;
CALLBACK_DATA(header_value);
break;
}
if (ch == LF) {
parser->state = s_header_field_start;
CALLBACK_DATA(header_value);
break;
}
c = LOWER(ch);
switch (parser->header_state) {
case h_upgrade:
parser->flags |= F_UPGRADE;
parser->header_state = h_general;
break;
case h_transfer_encoding:
/* looking for 'Transfer-Encoding: chunked' */
if ('c' == c) {
parser->header_state = h_matching_transfer_encoding_chunked;
} else {
parser->header_state = h_general;
}
break;
case h_content_length:
if (!IS_NUM(ch)) {
SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
goto error;
}
parser->content_length = ch - '0';
break;
case h_connection:
/* looking for 'Connection: keep-alive' */
if (c == 'k') {
parser->header_state = h_matching_connection_keep_alive;
/* looking for 'Connection: close' */
} else if (c == 'c') {
parser->header_state = h_matching_connection_close;
} else {
parser->header_state = h_general;
}
break;
default:
parser->header_state = h_general;
break;
}
break;
}
case s_header_value:
{
if (ch == CR) {
parser->state = s_header_almost_done;
CALLBACK_DATA(header_value);
break;
}
if (ch == LF) {
parser->state = s_header_almost_done;
CALLBACK_DATA_NOADVANCE(header_value);
goto reexecute_byte;
}
c = LOWER(ch);
switch (parser->header_state) {
case h_general:
break;
case h_connection:
case h_transfer_encoding:
assert(0 && "Shouldn't get here.");
break;
case h_content_length:
{
uint64_t t;
if (ch == ' ') break;
if (!IS_NUM(ch)) {
SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
goto error;
}
t = parser->content_length;
t *= 10;
t += ch - '0';
/* Overflow? */
if (t < parser->content_length || t == ULLONG_MAX) {
SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
goto error;
}
parser->content_length = t;
break;
}
/* Transfer-Encoding: chunked */
case h_matching_transfer_encoding_chunked:
parser->index++;
if (parser->index > sizeof(CHUNKED)-1
|| c != CHUNKED[parser->index]) {
parser->header_state = h_general;
} else if (parser->index == sizeof(CHUNKED)-2) {
parser->header_state = h_transfer_encoding_chunked;
}
break;
/* looking for 'Connection: keep-alive' */
case h_matching_connection_keep_alive:
parser->index++;
if (parser->index > sizeof(KEEP_ALIVE)-1
|| c != KEEP_ALIVE[parser->index]) {
parser->header_state = h_general;
} else if (parser->index == sizeof(KEEP_ALIVE)-2) {
parser->header_state = h_connection_keep_alive;
}
break;
/* looking for 'Connection: close' */
case h_matching_connection_close:
parser->index++;
if (parser->index > sizeof(CLOSE)-1 || c != CLOSE[parser->index]) {
parser->header_state = h_general;
} else if (parser->index == sizeof(CLOSE)-2) {
parser->header_state = h_connection_close;
}
break;
case h_transfer_encoding_chunked:
case h_connection_keep_alive:
case h_connection_close:
if (ch != ' ') parser->header_state = h_general;
break;
default:
parser->state = s_header_value;
parser->header_state = h_general;
break;
}
break;
}
case s_header_almost_done:
{
STRICT_CHECK(ch != LF);
parser->state = s_header_value_lws;
switch (parser->header_state) {
case h_connection_keep_alive:
parser->flags |= F_CONNECTION_KEEP_ALIVE;
break;
case h_connection_close:
parser->flags |= F_CONNECTION_CLOSE;
break;
case h_transfer_encoding_chunked:
parser->flags |= F_CHUNKED;
break;
default:
break;
}
break;
}
case s_header_value_lws:
{
if (ch == ' ' || ch == '\t')
parser->state = s_header_value_start;
else
{
parser->state = s_header_field_start;
goto reexecute_byte;
}
break;
}
case s_headers_almost_done:
{
STRICT_CHECK(ch != LF);
if (parser->flags & F_TRAILING) {
/* End of a chunked request */
parser->state = NEW_MESSAGE();
CALLBACK_NOTIFY(message_complete);
break;
}
parser->state = s_headers_done;
/* Set this here so that on_headers_complete() callbacks can see it */
parser->upgrade =
(parser->flags & F_UPGRADE || parser->method == HTTP_CONNECT);
/* Here we call the headers_complete callback. This is somewhat
* different than other callbacks because if the user returns 1, we
* will interpret that as saying that this message has no body. This
* is needed for the annoying case of recieving a response to a HEAD
* request.
*
* We'd like to use CALLBACK_NOTIFY_NOADVANCE() here but we cannot, so
* we have to simulate it by handling a change in errno below.
*/
if (settings->on_headers_complete) {
switch (settings->on_headers_complete(parser)) {
case 0:
break;
case 1:
parser->flags |= F_SKIPBODY;
break;
default:
SET_ERRNO(HPE_CB_headers_complete);
return p - data; /* Error */
}
}
if (HTTP_PARSER_ERRNO(parser) != HPE_OK) {
return p - data;
}
goto reexecute_byte;
}
case s_headers_done:
{
STRICT_CHECK(ch != LF);
parser->nread = 0;
/* Exit, the rest of the connect is in a different protocol. */
if (parser->upgrade) {
parser->state = NEW_MESSAGE();
CALLBACK_NOTIFY(message_complete);
return (p - data) + 1;
}
if (parser->flags & F_SKIPBODY) {
parser->state = NEW_MESSAGE();
CALLBACK_NOTIFY(message_complete);
} else if (parser->flags & F_CHUNKED) {
/* chunked encoding - ignore Content-Length header */
parser->state = s_chunk_size_start;
} else {
if (parser->content_length == 0) {
/* Content-Length header given but zero: Content-Length: 0\r\n */
parser->state = NEW_MESSAGE();
CALLBACK_NOTIFY(message_complete);
} else if (parser->content_length != ULLONG_MAX) {
/* Content-Length header given and non-zero */
parser->state = s_body_identity;
} else {
if (parser->type == HTTP_REQUEST ||
!http_message_needs_eof(parser)) {
/* Assume content-length 0 - read the next */
parser->state = NEW_MESSAGE();
CALLBACK_NOTIFY(message_complete);
} else {
/* Read body until EOF */
parser->state = s_body_identity_eof;
}
}
}
break;
}
case s_body_identity:
{
uint64_t to_read = MIN(parser->content_length,
(uint64_t) ((data + len) - p));
assert(parser->content_length != 0
&& parser->content_length != ULLONG_MAX);
/* The difference between advancing content_length and p is because
* the latter will automaticaly advance on the next loop iteration.
* Further, if content_length ends up at 0, we want to see the last
* byte again for our message complete callback.
*/
MARK(body);
parser->content_length -= to_read;
p += to_read - 1;
if (parser->content_length == 0) {
parser->state = s_message_done;
/* Mimic CALLBACK_DATA_NOADVANCE() but with one extra byte.
*
* The alternative to doing this is to wait for the next byte to
* trigger the data callback, just as in every other case. The
* problem with this is that this makes it difficult for the test
* harness to distinguish between complete-on-EOF and
* complete-on-length. It's not clear that this distinction is
* important for applications, but let's keep it for now.
*/
CALLBACK_DATA_(body, p - body_mark + 1, p - data);
goto reexecute_byte;
}
break;
}
/* read until EOF */
case s_body_identity_eof:
MARK(body);
p = data + len - 1;
break;
case s_message_done:
parser->state = NEW_MESSAGE();
CALLBACK_NOTIFY(message_complete);
break;
case s_chunk_size_start:
{
assert(parser->nread == 1);
assert(parser->flags & F_CHUNKED);
unhex_val = unhex[(unsigned char)ch];
if (unhex_val == -1) {
SET_ERRNO(HPE_INVALID_CHUNK_SIZE);
goto error;
}
parser->content_length = unhex_val;
parser->state = s_chunk_size;
break;
}
case s_chunk_size:
{
uint64_t t;
assert(parser->flags & F_CHUNKED);
if (ch == CR) {
parser->state = s_chunk_size_almost_done;
break;
}
unhex_val = unhex[(unsigned char)ch];
if (unhex_val == -1) {
if (ch == ';' || ch == ' ') {
parser->state = s_chunk_parameters;
break;
}
SET_ERRNO(HPE_INVALID_CHUNK_SIZE);
goto error;
}
t = parser->content_length;
t *= 16;
t += unhex_val;
/* Overflow? */
if (t < parser->content_length || t == ULLONG_MAX) {
SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
goto error;
}
parser->content_length = t;
break;
}
case s_chunk_parameters:
{
assert(parser->flags & F_CHUNKED);
/* just ignore this. TODO check for overflow */
if (ch == CR) {
parser->state = s_chunk_size_almost_done;
break;
}
break;
}
case s_chunk_size_almost_done:
{
assert(parser->flags & F_CHUNKED);
STRICT_CHECK(ch != LF);
parser->nread = 0;
if (parser->content_length == 0) {
parser->flags |= F_TRAILING;
parser->state = s_header_field_start;
} else {
parser->state = s_chunk_data;
}
break;
}
case s_chunk_data:
{
uint64_t to_read = MIN(parser->content_length,
(uint64_t) ((data + len) - p));
assert(parser->flags & F_CHUNKED);
assert(parser->content_length != 0
&& parser->content_length != ULLONG_MAX);
/* See the explanation in s_body_identity for why the content
* length and data pointers are managed this way.
*/
MARK(body);
parser->content_length -= to_read;
p += to_read - 1;
if (parser->content_length == 0) {
parser->state = s_chunk_data_almost_done;
}
break;
}
case s_chunk_data_almost_done:
assert(parser->flags & F_CHUNKED);
assert(parser->content_length == 0);
STRICT_CHECK(ch != CR);
parser->state = s_chunk_data_done;
CALLBACK_DATA(body);
break;
case s_chunk_data_done:
assert(parser->flags & F_CHUNKED);
STRICT_CHECK(ch != LF);
parser->nread = 0;
parser->state = s_chunk_size_start;
break;
default:
assert(0 && "unhandled state");
SET_ERRNO(HPE_INVALID_INTERNAL_STATE);
goto error;
}
}
/* Run callbacks for any marks that we have leftover after we ran our of
* bytes. There should be at most one of these set, so it's OK to invoke
* them in series (unset marks will not result in callbacks).
*
* We use the NOADVANCE() variety of callbacks here because 'p' has already
* overflowed 'data' and this allows us to correct for the off-by-one that
* we'd otherwise have (since CALLBACK_DATA() is meant to be run with a 'p'
* value that's in-bounds).
*/
assert(((header_field_mark ? 1 : 0) +
(header_value_mark ? 1 : 0) +
(url_mark ? 1 : 0) +
(body_mark ? 1 : 0)) <= 1);
CALLBACK_DATA_NOADVANCE(header_field);
CALLBACK_DATA_NOADVANCE(header_value);
CALLBACK_DATA_NOADVANCE(url);
CALLBACK_DATA_NOADVANCE(body);
return len;
error:
if (HTTP_PARSER_ERRNO(parser) == HPE_OK) {
SET_ERRNO(HPE_UNKNOWN);
}
return (p - data);
}
/* Does the parser need to see an EOF to find the end of the message? */
int
http_message_needs_eof (const http_parser *parser)
{
if (parser->type == HTTP_REQUEST) {
return 0;
}
/* See RFC 2616 section 4.4 */
if (parser->status_code / 100 == 1 || /* 1xx e.g. Continue */
parser->status_code == 204 || /* No Content */
parser->status_code == 304 || /* Not Modified */
parser->flags & F_SKIPBODY) { /* response to a HEAD request */
return 0;
}
if ((parser->flags & F_CHUNKED) || parser->content_length != ULLONG_MAX) {
return 0;
}
return 1;
}
int
http_should_keep_alive (const http_parser *parser)
{
if (parser->http_major > 0 && parser->http_minor > 0) {
/* HTTP/1.1 */
if (parser->flags & F_CONNECTION_CLOSE) {
return 0;
}
} else {
/* HTTP/1.0 or earlier */
if (!(parser->flags & F_CONNECTION_KEEP_ALIVE)) {
return 0;
}
}
return !http_message_needs_eof(parser);
}
const char *
http_method_str (enum http_method m)
{
return ELEM_AT(method_strings, m, "<unknown>");
}
void
http_parser_init (http_parser *parser, enum http_parser_type t)
{
void *data = parser->data; /* preserve application data */
memset(parser, 0, sizeof(*parser));
parser->data = data;
parser->type = t;
parser->state = (t == HTTP_REQUEST ? s_start_req : (t == HTTP_RESPONSE ? s_start_res : s_start_req_or_res));
parser->http_errno = HPE_OK;
}
const char *
http_errno_name(enum http_errno err) {
assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0])));
return http_strerror_tab[err].name;
}
const char *
http_errno_description(enum http_errno err) {
assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0])));
return http_strerror_tab[err].description;
}
static enum http_host_state
http_parse_host_char(enum http_host_state s, const char ch) {
switch(s) {
case s_http_userinfo:
case s_http_userinfo_start:
if (ch == '@') {
return s_http_host_start;
}
if (IS_USERINFO_CHAR(ch)) {
return s_http_userinfo;
}
break;
case s_http_host_start:
if (ch == '[') {
return s_http_host_v6_start;
}
if (IS_HOST_CHAR(ch)) {
return s_http_host;
}
break;
case s_http_host:
if (IS_HOST_CHAR(ch)) {
return s_http_host;
}
/* FALLTHROUGH */
case s_http_host_v6_end:
if (ch == ':') {
return s_http_host_port_start;
}
break;
case s_http_host_v6:
if (ch == ']') {
return s_http_host_v6_end;
}
/* FALLTHROUGH */
case s_http_host_v6_start:
if (IS_HEX(ch) || ch == ':') {
return s_http_host_v6;
}
break;
case s_http_host_port:
case s_http_host_port_start:
if (IS_NUM(ch)) {
return s_http_host_port;
}
break;
default:
break;
}
return s_http_host_dead;
}
static int
http_parse_host(const char * buf, struct http_parser_url *u, int found_at) {
enum http_host_state s;
const char *p;
size_t buflen = u->field_data[UF_HOST].off + u->field_data[UF_HOST].len;
if (buflen > UINT16_MAX)
return 1;
u->field_data[UF_HOST].len = 0;
s = found_at ? s_http_userinfo_start : s_http_host_start;
for (p = buf + u->field_data[UF_HOST].off; p < buf + buflen; p++) {
enum http_host_state new_s = http_parse_host_char(s, *p);
if (new_s == s_http_host_dead) {
return 1;
}
switch(new_s) {
case s_http_host:
if (s != s_http_host) {
u->field_data[UF_HOST].off = (uint16_t)(p - buf);
}
u->field_data[UF_HOST].len++;
break;
case s_http_host_v6:
if (s != s_http_host_v6) {
u->field_data[UF_HOST].off = (uint16_t)(p - buf);
}
u->field_data[UF_HOST].len++;
break;
case s_http_host_port:
if (s != s_http_host_port) {
u->field_data[UF_PORT].off = (uint16_t)(p - buf);
u->field_data[UF_PORT].len = 0;
u->field_set |= (1 << UF_PORT);
}
u->field_data[UF_PORT].len++;
break;
case s_http_userinfo:
if (s != s_http_userinfo) {
u->field_data[UF_USERINFO].off = (uint16_t)(p - buf);
u->field_data[UF_USERINFO].len = 0;
u->field_set |= (1 << UF_USERINFO);
}
u->field_data[UF_USERINFO].len++;
break;
default:
break;
}
s = new_s;
}
/* Make sure we don't end somewhere unexpected */
switch (s) {
case s_http_host_start:
case s_http_host_v6_start:
case s_http_host_v6:
case s_http_userinfo:
case s_http_userinfo_start:
return 1;
default:
break;
}
return 0;
}
int
http_parser_parse_url(const char *buf, size_t buflen, int is_connect,
struct http_parser_url *u)
{
enum state s;
const char *p;
enum http_parser_url_fields uf, old_uf;
int found_at = 0;
if (buflen > UINT16_MAX)
return 1;
u->port = u->field_set = 0;
s = is_connect ? s_req_server_start : s_req_spaces_before_url;
uf = old_uf = UF_MAX;
for (p = buf; p < buf + buflen; p++) {
s = parse_url_char(s, *p);
/* Figure out the next field that we're operating on */
switch (s) {
case s_dead:
return 1;
/* Skip delimeters */
case s_req_schema_slash:
case s_req_schema_slash_slash:
case s_req_server_start:
case s_req_query_string_start:
case s_req_fragment_start:
continue;
case s_req_schema:
uf = UF_SCHEMA;
break;
case s_req_server_with_at:
found_at = 1;
/* FALLTROUGH */
case s_req_server:
uf = UF_HOST;
break;
case s_req_path:
uf = UF_PATH;
break;
case s_req_query_string:
uf = UF_QUERY;
break;
case s_req_fragment:
uf = UF_FRAGMENT;
break;
default:
assert(!"Unexpected state");
return 1;
}
/* Nothing's changed; soldier on */
if (uf == old_uf) {
u->field_data[uf].len++;
continue;
}
u->field_data[uf].off = (uint16_t)(p - buf);
u->field_data[uf].len = 1;
u->field_set |= (1 << uf);
old_uf = uf;
}
/* host must be present if there is a schema */
/* parsing http:///toto will fail */
if ((u->field_set & ((1 << UF_SCHEMA) | (1 << UF_HOST))) != 0) {
if (http_parse_host(buf, u, found_at) != 0) {
return 1;
}
}
/* CONNECT requests can only contain "hostname:port" */
if (is_connect && u->field_set != ((1 << UF_HOST)|(1 << UF_PORT))) {
return 1;
}
if (u->field_set & (1 << UF_PORT)) {
/* Don't bother with endp; we've already validated the string */
unsigned long v = strtoul(buf + u->field_data[UF_PORT].off, NULL, 10);
/* Ports have a max value of 2^16 */
if (v > 0xffff) {
return 1;
}
u->port = (uint16_t) v;
}
return 0;
}
void
http_parser_pause(http_parser *parser, int paused) {
/* Users should only be pausing/unpausing a parser that is not in an error
* state. In non-debug builds, there's not much that we can do about this
* other than ignore it.
*/
if (HTTP_PARSER_ERRNO(parser) == HPE_OK ||
HTTP_PARSER_ERRNO(parser) == HPE_PAUSED) {
SET_ERRNO((paused) ? HPE_PAUSED : HPE_OK);
} else {
assert(0 && "Attempting to pause parser in error state");
}
}
int
http_body_is_final(const struct http_parser *parser) {
return parser->state == s_message_done;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/util.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_util_h__
#define INCLUDE_util_h__
#include "common.h"
#ifndef GIT_WIN32
# include <ctype.h>
#endif
#include "git2/buffer.h"
#include "buffer.h"
#include "common.h"
#include "strnlen.h"
#include "thread.h"
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#define bitsizeof(x) (CHAR_BIT * sizeof(x))
#define MSB(x, bits) ((x) & (~UINT64_C(0) << (bitsizeof(x) - (bits))))
#ifndef min
# define min(a,b) ((a) < (b) ? (a) : (b))
#endif
#ifndef max
# define max(a,b) ((a) > (b) ? (a) : (b))
#endif
#if defined(__GNUC__)
# define GIT_CONTAINER_OF(ptr, type, member) \
__builtin_choose_expr( \
__builtin_offsetof(type, member) == 0 && \
__builtin_types_compatible_p(__typeof__(&((type *) 0)->member), __typeof__(ptr)), \
((type *) (ptr)), \
(void)0)
#else
# define GIT_CONTAINER_OF(ptr, type, member) (type *)(ptr)
#endif
#define GIT_DATE_RFC2822_SZ 32
/**
* Return the length of a constant string.
* We are aware that `strlen` performs the same task and is usually
* optimized away by the compiler, whilst being safer because it returns
* valid values when passed a pointer instead of a constant string; however
* this macro will transparently work with wide-char and single-char strings.
*/
#define CONST_STRLEN(x) ((sizeof(x)/sizeof(x[0])) - 1)
#define STRCMP_CASESELECT(IGNORE_CASE, STR1, STR2) \
((IGNORE_CASE) ? strcasecmp((STR1), (STR2)) : strcmp((STR1), (STR2)))
#define CASESELECT(IGNORE_CASE, ICASE, CASE) \
((IGNORE_CASE) ? (ICASE) : (CASE))
extern int git__prefixcmp(const char *str, const char *prefix);
extern int git__prefixcmp_icase(const char *str, const char *prefix);
extern int git__prefixncmp(const char *str, size_t str_n, const char *prefix);
extern int git__prefixncmp_icase(const char *str, size_t str_n, const char *prefix);
extern int git__suffixcmp(const char *str, const char *suffix);
GIT_INLINE(int) git__signum(int val)
{
return ((val > 0) - (val < 0));
}
extern int git__strntol32(int32_t *n, const char *buff, size_t buff_len, const char **end_buf, int base);
extern int git__strntol64(int64_t *n, const char *buff, size_t buff_len, const char **end_buf, int base);
extern void git__hexdump(const char *buffer, size_t n);
extern uint32_t git__hash(const void *key, int len, uint32_t seed);
/* 32-bit cross-platform rotl */
#ifdef _MSC_VER /* use built-in method in MSVC */
# define git__rotl(v, s) (uint32_t)_rotl(v, s)
#else /* use bitops in GCC; with o2 this gets optimized to a rotl instruction */
# define git__rotl(v, s) (uint32_t)(((uint32_t)(v) << (s)) | ((uint32_t)(v) >> (32 - (s))))
#endif
extern char *git__strtok(char **end, const char *sep);
extern char *git__strsep(char **end, const char *sep);
extern void git__strntolower(char *str, size_t len);
extern void git__strtolower(char *str);
#ifdef GIT_WIN32
GIT_INLINE(int) git__tolower(int c)
{
return (c >= 'A' && c <= 'Z') ? (c + 32) : c;
}
#else
# define git__tolower(a) tolower(a)
#endif
extern size_t git__linenlen(const char *buffer, size_t buffer_len);
GIT_INLINE(const char *) git__next_line(const char *s)
{
while (*s && *s != '\n') s++;
while (*s == '\n' || *s == '\r') s++;
return s;
}
GIT_INLINE(const void *) git__memrchr(const void *s, int c, size_t n)
{
const unsigned char *cp;
if (n != 0) {
cp = (unsigned char *)s + n;
do {
if (*(--cp) == (unsigned char)c)
return cp;
} while (--n != 0);
}
return NULL;
}
extern const void * git__memmem(const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen);
typedef int (*git__tsort_cmp)(const void *a, const void *b);
extern void git__tsort(void **dst, size_t size, git__tsort_cmp cmp);
typedef int (*git__sort_r_cmp)(const void *a, const void *b, void *payload);
extern void git__tsort_r(
void **dst, size_t size, git__sort_r_cmp cmp, void *payload);
extern void git__qsort_r(
void *els, size_t nel, size_t elsize, git__sort_r_cmp cmp, void *payload);
/**
* @param position If non-NULL, this will be set to the position where the
* element is or would be inserted if not found.
* @return 0 if found; GIT_ENOTFOUND if not found
*/
extern int git__bsearch(
void **array,
size_t array_len,
const void *key,
int (*compare)(const void *key, const void *element),
size_t *position);
extern int git__bsearch_r(
void **array,
size_t array_len,
const void *key,
int (*compare_r)(const void *key, const void *element, void *payload),
void *payload,
size_t *position);
#define git__strcmp strcmp
#define git__strncmp strncmp
extern int git__strcmp_cb(const void *a, const void *b);
extern int git__strcasecmp_cb(const void *a, const void *b);
extern int git__strcasecmp(const char *a, const char *b);
extern int git__strncasecmp(const char *a, const char *b, size_t sz);
extern int git__strcasesort_cmp(const char *a, const char *b);
/*
* Compare some NUL-terminated `a` to a possibly non-NUL terminated
* `b` of length `b_len`; like `strncmp` but ensuring that
* `strlen(a) == b_len` as well.
*/
GIT_INLINE(int) git__strlcmp(const char *a, const char *b, size_t b_len)
{
int cmp = strncmp(a, b, b_len);
return cmp ? cmp : (int)a[b_len];
}
typedef struct {
git_atomic32 refcount;
void *owner;
} git_refcount;
typedef void (*git_refcount_freeptr)(void *r);
#define GIT_REFCOUNT_INC(r) { \
git_atomic32_inc(&(r)->rc.refcount); \
}
#define GIT_REFCOUNT_DEC(_r, do_free) { \
git_refcount *r = &(_r)->rc; \
int val = git_atomic32_dec(&r->refcount); \
if (val <= 0 && r->owner == NULL) { do_free(_r); } \
}
#define GIT_REFCOUNT_OWN(r, o) { \
(void)git_atomic_swap((r)->rc.owner, o); \
}
#define GIT_REFCOUNT_OWNER(r) git_atomic_load((r)->rc.owner)
#define GIT_REFCOUNT_VAL(r) git_atomic32_get((r)->rc.refcount)
static signed char from_hex[] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 00 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 20 */
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /* 30 */
-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 40 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 50 */
-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 60 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 70 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 80 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 90 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a0 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* b0 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* c0 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* d0 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* e0 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* f0 */
};
GIT_INLINE(int) git__fromhex(char h)
{
return from_hex[(unsigned char) h];
}
GIT_INLINE(int) git__ishex(const char *str)
{
unsigned i;
for (i=0; str[i] != '\0'; i++)
if (git__fromhex(str[i]) < 0)
return 0;
return 1;
}
GIT_INLINE(size_t) git__size_t_bitmask(size_t v)
{
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
return v;
}
GIT_INLINE(size_t) git__size_t_powerof2(size_t v)
{
return git__size_t_bitmask(v) + 1;
}
GIT_INLINE(bool) git__isupper(int c)
{
return (c >= 'A' && c <= 'Z');
}
GIT_INLINE(bool) git__isalpha(int c)
{
return ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'));
}
GIT_INLINE(bool) git__isdigit(int c)
{
return (c >= '0' && c <= '9');
}
GIT_INLINE(bool) git__isspace(int c)
{
return (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' || c == '\v');
}
GIT_INLINE(bool) git__isspace_nonlf(int c)
{
return (c == ' ' || c == '\t' || c == '\f' || c == '\r' || c == '\v');
}
GIT_INLINE(bool) git__iswildcard(int c)
{
return (c == '*' || c == '?' || c == '[');
}
GIT_INLINE(bool) git__isxdigit(int c)
{
return ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'));
}
/*
* Parse a string value as a boolean, just like Core Git does.
*
* Valid values for true are: 'true', 'yes', 'on'
* Valid values for false are: 'false', 'no', 'off'
*/
extern int git__parse_bool(int *out, const char *value);
/*
* Parse a string into a value as a git_time_t.
*
* Sample valid input:
* - "yesterday"
* - "July 17, 2003"
* - "2003-7-17 08:23"
*/
extern int git__date_parse(git_time_t *out, const char *date);
/*
* Format a git_time as a RFC2822 string
*
* @param out buffer to store formatted date; a '\\0' terminator will automatically be added.
* @param len size of the buffer; should be atleast `GIT_DATE_RFC2822_SZ` in size;
* @param date the date to be formatted
* @return 0 if successful; -1 on error
*/
extern int git__date_rfc2822_fmt(char *out, size_t len, const git_time *date);
/*
* Unescapes a string in-place.
*
* Edge cases behavior:
* - "jackie\" -> "jacky\"
* - "chan\\" -> "chan\"
*/
extern size_t git__unescape(char *str);
/*
* Safely zero-out memory, making sure that the compiler
* doesn't optimize away the operation.
*/
GIT_INLINE(void) git__memzero(void *data, size_t size)
{
#ifdef _MSC_VER
SecureZeroMemory((PVOID)data, size);
#else
volatile uint8_t *scan = (volatile uint8_t *)data;
while (size--)
*scan++ = 0x0;
#endif
}
#ifdef GIT_WIN32
GIT_INLINE(double) git__timer(void)
{
/* GetTickCount64 returns the number of milliseconds that have
* elapsed since the system was started. */
return (double) GetTickCount64() / (double) 1000;
}
#elif __APPLE__
#include <mach/mach_time.h>
GIT_INLINE(double) git__timer(void)
{
uint64_t time = mach_absolute_time();
static double scaling_factor = 0;
if (scaling_factor == 0) {
mach_timebase_info_data_t info;
(void)mach_timebase_info(&info);
scaling_factor = (double)info.numer / (double)info.denom;
}
return (double)time * scaling_factor / 1.0E9;
}
#elif defined(__amigaos4__)
#include <proto/timer.h>
GIT_INLINE(double) git__timer(void)
{
struct TimeVal tv;
ITimer->GetUpTime(&tv);
return (double)tv.Seconds + (double)tv.Microseconds / 1.0E6;
}
#else
#include <sys/time.h>
GIT_INLINE(double) git__timer(void)
{
struct timeval tv;
#ifdef CLOCK_MONOTONIC
struct timespec tp;
if (clock_gettime(CLOCK_MONOTONIC, &tp) == 0)
return (double) tp.tv_sec + (double) tp.tv_nsec / 1.0E9;
#endif
/* Fall back to using gettimeofday */
gettimeofday(&tv, NULL);
return (double)tv.tv_sec + (double)tv.tv_usec / 1.0E6;
}
#endif
extern int git__getenv(git_buf *out, const char *name);
extern int git__online_cpus(void);
GIT_INLINE(int) git__noop(void) { return 0; }
#include "alloc.h"
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/tsort.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
/**
* An array-of-pointers implementation of Python's Timsort
* Based on code by Christopher Swenson under the MIT license
*
* Copyright (c) 2010 Christopher Swenson
* Copyright (c) 2011 Vicent Marti
*/
#ifndef MAX
# define MAX(x,y) (((x) > (y) ? (x) : (y)))
#endif
#ifndef MIN
# define MIN(x,y) (((x) < (y) ? (x) : (y)))
#endif
static int binsearch(
void **dst, const void *x, size_t size, git__sort_r_cmp cmp, void *payload)
{
int l, c, r;
void *lx, *cx;
l = 0;
r = (int)size - 1;
c = r >> 1;
lx = dst[l];
/* check for beginning conditions */
if (cmp(x, lx, payload) < 0)
return 0;
else if (cmp(x, lx, payload) == 0) {
int i = 1;
while (cmp(x, dst[i], payload) == 0)
i++;
return i;
}
/* guaranteed not to be >= rx */
cx = dst[c];
while (1) {
const int val = cmp(x, cx, payload);
if (val < 0) {
if (c - l <= 1) return c;
r = c;
} else if (val > 0) {
if (r - c <= 1) return c + 1;
l = c;
lx = cx;
} else {
do {
cx = dst[++c];
} while (cmp(x, cx, payload) == 0);
return c;
}
c = l + ((r - l) >> 1);
cx = dst[c];
}
}
/* Binary insertion sort, but knowing that the first "start" entries are sorted. Used in timsort. */
static void bisort(
void **dst, size_t start, size_t size, git__sort_r_cmp cmp, void *payload)
{
size_t i;
void *x;
int location;
for (i = start; i < size; i++) {
int j;
/* If this entry is already correct, just move along */
if (cmp(dst[i - 1], dst[i], payload) <= 0)
continue;
/* Else we need to find the right place, shift everything over, and squeeze in */
x = dst[i];
location = binsearch(dst, x, i, cmp, payload);
for (j = (int)i - 1; j >= location; j--) {
dst[j + 1] = dst[j];
}
dst[location] = x;
}
}
/* timsort implementation, based on timsort.txt */
struct tsort_run {
ssize_t start;
ssize_t length;
};
struct tsort_store {
size_t alloc;
git__sort_r_cmp cmp;
void *payload;
void **storage;
};
static void reverse_elements(void **dst, ssize_t start, ssize_t end)
{
while (start < end) {
void *tmp = dst[start];
dst[start] = dst[end];
dst[end] = tmp;
start++;
end--;
}
}
static ssize_t count_run(
void **dst, ssize_t start, ssize_t size, struct tsort_store *store)
{
ssize_t curr = start + 2;
if (size - start == 1)
return 1;
if (start >= size - 2) {
if (store->cmp(dst[size - 2], dst[size - 1], store->payload) > 0) {
void *tmp = dst[size - 1];
dst[size - 1] = dst[size - 2];
dst[size - 2] = tmp;
}
return 2;
}
if (store->cmp(dst[start], dst[start + 1], store->payload) <= 0) {
while (curr < size - 1 &&
store->cmp(dst[curr - 1], dst[curr], store->payload) <= 0)
curr++;
return curr - start;
} else {
while (curr < size - 1 &&
store->cmp(dst[curr - 1], dst[curr], store->payload) > 0)
curr++;
/* reverse in-place */
reverse_elements(dst, start, curr - 1);
return curr - start;
}
}
static size_t compute_minrun(size_t n)
{
int r = 0;
while (n >= 64) {
r |= n & 1;
n >>= 1;
}
return n + r;
}
static int check_invariant(struct tsort_run *stack, ssize_t stack_curr)
{
if (stack_curr < 2)
return 1;
else if (stack_curr == 2) {
const ssize_t A = stack[stack_curr - 2].length;
const ssize_t B = stack[stack_curr - 1].length;
return (A > B);
} else {
const ssize_t A = stack[stack_curr - 3].length;
const ssize_t B = stack[stack_curr - 2].length;
const ssize_t C = stack[stack_curr - 1].length;
return !((A <= B + C) || (B <= C));
}
}
static int resize(struct tsort_store *store, size_t new_size)
{
if (store->alloc < new_size) {
void **tempstore;
tempstore = git__reallocarray(store->storage, new_size, sizeof(void *));
/**
* Do not propagate on OOM; this will abort the sort and
* leave the array unsorted, but no error code will be
* raised
*/
if (tempstore == NULL)
return -1;
store->storage = tempstore;
store->alloc = new_size;
}
return 0;
}
static void merge(void **dst, const struct tsort_run *stack, ssize_t stack_curr, struct tsort_store *store)
{
const ssize_t A = stack[stack_curr - 2].length;
const ssize_t B = stack[stack_curr - 1].length;
const ssize_t curr = stack[stack_curr - 2].start;
void **storage;
ssize_t i, j, k;
if (resize(store, MIN(A, B)) < 0)
return;
storage = store->storage;
/* left merge */
if (A < B) {
memcpy(storage, &dst[curr], A * sizeof(void *));
i = 0;
j = curr + A;
for (k = curr; k < curr + A + B; k++) {
if ((i < A) && (j < curr + A + B)) {
if (store->cmp(storage[i], dst[j], store->payload) <= 0)
dst[k] = storage[i++];
else
dst[k] = dst[j++];
} else if (i < A) {
dst[k] = storage[i++];
} else
dst[k] = dst[j++];
}
} else {
memcpy(storage, &dst[curr + A], B * sizeof(void *));
i = B - 1;
j = curr + A - 1;
for (k = curr + A + B - 1; k >= curr; k--) {
if ((i >= 0) && (j >= curr)) {
if (store->cmp(dst[j], storage[i], store->payload) > 0)
dst[k] = dst[j--];
else
dst[k] = storage[i--];
} else if (i >= 0)
dst[k] = storage[i--];
else
dst[k] = dst[j--];
}
}
}
static ssize_t collapse(void **dst, struct tsort_run *stack, ssize_t stack_curr, struct tsort_store *store, ssize_t size)
{
ssize_t A, B, C;
while (1) {
/* if the stack only has one thing on it, we are done with the collapse */
if (stack_curr <= 1)
break;
/* if this is the last merge, just do it */
if ((stack_curr == 2) && (stack[0].length + stack[1].length == size)) {
merge(dst, stack, stack_curr, store);
stack[0].length += stack[1].length;
stack_curr--;
break;
}
/* check if the invariant is off for a stack of 2 elements */
else if ((stack_curr == 2) && (stack[0].length <= stack[1].length)) {
merge(dst, stack, stack_curr, store);
stack[0].length += stack[1].length;
stack_curr--;
break;
}
else if (stack_curr == 2)
break;
A = stack[stack_curr - 3].length;
B = stack[stack_curr - 2].length;
C = stack[stack_curr - 1].length;
/* check first invariant */
if (A <= B + C) {
if (A < C) {
merge(dst, stack, stack_curr - 1, store);
stack[stack_curr - 3].length += stack[stack_curr - 2].length;
stack[stack_curr - 2] = stack[stack_curr - 1];
stack_curr--;
} else {
merge(dst, stack, stack_curr, store);
stack[stack_curr - 2].length += stack[stack_curr - 1].length;
stack_curr--;
}
} else if (B <= C) {
merge(dst, stack, stack_curr, store);
stack[stack_curr - 2].length += stack[stack_curr - 1].length;
stack_curr--;
} else
break;
}
return stack_curr;
}
#define PUSH_NEXT() do {\
len = count_run(dst, curr, size, store);\
run = minrun;\
if (run > (ssize_t)size - curr) run = size - curr;\
if (run > len) {\
bisort(&dst[curr], len, run, cmp, payload);\
len = run;\
}\
run_stack[stack_curr].start = curr;\
run_stack[stack_curr++].length = len;\
curr += len;\
if (curr == (ssize_t)size) {\
/* finish up */ \
while (stack_curr > 1) { \
merge(dst, run_stack, stack_curr, store); \
run_stack[stack_curr - 2].length += run_stack[stack_curr - 1].length; \
stack_curr--; \
} \
if (store->storage != NULL) {\
git__free(store->storage);\
store->storage = NULL;\
}\
return;\
}\
}\
while (0)
void git__tsort_r(
void **dst, size_t size, git__sort_r_cmp cmp, void *payload)
{
struct tsort_store _store, *store = &_store;
struct tsort_run run_stack[128];
ssize_t stack_curr = 0;
ssize_t len, run;
ssize_t curr = 0;
ssize_t minrun;
if (size < 64) {
bisort(dst, 1, size, cmp, payload);
return;
}
/* compute the minimum run length */
minrun = (ssize_t)compute_minrun(size);
/* temporary storage for merges */
store->alloc = 0;
store->storage = NULL;
store->cmp = cmp;
store->payload = payload;
PUSH_NEXT();
PUSH_NEXT();
PUSH_NEXT();
while (1) {
if (!check_invariant(run_stack, stack_curr)) {
stack_curr = collapse(dst, run_stack, stack_curr, store, size);
continue;
}
PUSH_NEXT();
}
}
static int tsort_r_cmp(const void *a, const void *b, void *payload)
{
return ((git__tsort_cmp)payload)(a, b);
}
void git__tsort(void **dst, size_t size, git__tsort_cmp cmp)
{
git__tsort_r(dst, size, tsort_r_cmp, cmp);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/diff_parse.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "diff_parse.h"
#include "diff.h"
#include "patch.h"
#include "patch_parse.h"
static void diff_parsed_free(git_diff *d)
{
git_diff_parsed *diff = (git_diff_parsed *)d;
git_patch *patch;
size_t i;
git_vector_foreach(&diff->patches, i, patch)
git_patch_free(patch);
git_vector_free(&diff->patches);
git_vector_free(&diff->base.deltas);
git_pool_clear(&diff->base.pool);
git__memzero(diff, sizeof(*diff));
git__free(diff);
}
static git_diff_parsed *diff_parsed_alloc(void)
{
git_diff_parsed *diff;
if ((diff = git__calloc(1, sizeof(git_diff_parsed))) == NULL)
return NULL;
GIT_REFCOUNT_INC(&diff->base);
diff->base.type = GIT_DIFF_TYPE_PARSED;
diff->base.strcomp = git__strcmp;
diff->base.strncomp = git__strncmp;
diff->base.pfxcomp = git__prefixcmp;
diff->base.entrycomp = git_diff__entry_cmp;
diff->base.patch_fn = git_patch_parsed_from_diff;
diff->base.free_fn = diff_parsed_free;
if (git_diff_options_init(&diff->base.opts, GIT_DIFF_OPTIONS_VERSION) < 0) {
git__free(diff);
return NULL;
}
diff->base.opts.flags &= ~GIT_DIFF_IGNORE_CASE;
if (git_pool_init(&diff->base.pool, 1) < 0 ||
git_vector_init(&diff->patches, 0, NULL) < 0 ||
git_vector_init(&diff->base.deltas, 0, git_diff_delta__cmp) < 0) {
git_diff_free(&diff->base);
return NULL;
}
git_vector_set_cmp(&diff->base.deltas, git_diff_delta__cmp);
return diff;
}
int git_diff_from_buffer(
git_diff **out,
const char *content,
size_t content_len)
{
git_diff_parsed *diff;
git_patch *patch;
git_patch_parse_ctx *ctx = NULL;
int error = 0;
*out = NULL;
diff = diff_parsed_alloc();
GIT_ERROR_CHECK_ALLOC(diff);
ctx = git_patch_parse_ctx_init(content, content_len, NULL);
GIT_ERROR_CHECK_ALLOC(ctx);
while (ctx->parse_ctx.remain_len) {
if ((error = git_patch_parse(&patch, ctx)) < 0)
break;
git_vector_insert(&diff->patches, patch);
git_vector_insert(&diff->base.deltas, patch->delta);
}
if (error == GIT_ENOTFOUND && git_vector_length(&diff->patches) > 0) {
git_error_clear();
error = 0;
}
git_patch_parse_ctx_free(ctx);
if (error < 0)
git_diff_free(&diff->base);
else
*out = &diff->base;
return error;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/offmap.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "offmap.h"
#define kmalloc git__malloc
#define kcalloc git__calloc
#define krealloc git__realloc
#define kreallocarray git__reallocarray
#define kfree git__free
#include "khash.h"
__KHASH_TYPE(off, off64_t, void *)
__KHASH_IMPL(off, static kh_inline, off64_t, void *, 1, kh_int64_hash_func, kh_int64_hash_equal)
int git_offmap_new(git_offmap **out)
{
*out = kh_init(off);
GIT_ERROR_CHECK_ALLOC(*out);
return 0;
}
void git_offmap_free(git_offmap *map)
{
kh_destroy(off, map);
}
void git_offmap_clear(git_offmap *map)
{
kh_clear(off, map);
}
size_t git_offmap_size(git_offmap *map)
{
return kh_size(map);
}
void *git_offmap_get(git_offmap *map, const off64_t key)
{
size_t idx = kh_get(off, map, key);
if (idx == kh_end(map) || !kh_exist(map, idx))
return NULL;
return kh_val(map, idx);
}
int git_offmap_set(git_offmap *map, const off64_t key, void *value)
{
size_t idx;
int rval;
idx = kh_put(off, map, key, &rval);
if (rval < 0)
return -1;
if (rval == 0)
kh_key(map, idx) = key;
kh_val(map, idx) = value;
return 0;
}
int git_offmap_delete(git_offmap *map, const off64_t key)
{
khiter_t idx = kh_get(off, map, key);
if (idx == kh_end(map))
return GIT_ENOTFOUND;
kh_del(off, map, idx);
return 0;
}
int git_offmap_exists(git_offmap *map, const off64_t key)
{
return kh_get(off, map, key) != kh_end(map);
}
int git_offmap_iterate(void **value, git_offmap *map, size_t *iter, off64_t *key)
{
size_t i = *iter;
while (i < map->n_buckets && !kh_exist(map, i))
i++;
if (i >= map->n_buckets)
return GIT_ITEROVER;
if (key)
*key = kh_key(map, i);
if (value)
*value = kh_value(map, i);
*iter = ++i;
return 0;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/alloc.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_alloc_h__
#define INCLUDE_alloc_h__
#include "git2/sys/alloc.h"
extern git_allocator git__allocator;
#define git__malloc(len) git__allocator.gmalloc(len, __FILE__, __LINE__)
#define git__calloc(nelem, elsize) git__allocator.gcalloc(nelem, elsize, __FILE__, __LINE__)
#define git__strdup(str) git__allocator.gstrdup(str, __FILE__, __LINE__)
#define git__strndup(str, n) git__allocator.gstrndup(str, n, __FILE__, __LINE__)
#define git__substrdup(str, n) git__allocator.gsubstrdup(str, n, __FILE__, __LINE__)
#define git__realloc(ptr, size) git__allocator.grealloc(ptr, size, __FILE__, __LINE__)
#define git__reallocarray(ptr, nelem, elsize) git__allocator.greallocarray(ptr, nelem, elsize, __FILE__, __LINE__)
#define git__mallocarray(nelem, elsize) git__allocator.gmallocarray(nelem, elsize, __FILE__, __LINE__)
#define git__free git__allocator.gfree
/**
* This function is being called by our global setup routines to
* initialize the standard allocator.
*/
int git_allocator_global_init(void);
/**
* Switch out libgit2's global memory allocator
*
* @param allocator The new allocator that should be used. All function pointers
* of it need to be set correctly.
* @return An error code or 0.
*/
int git_allocator_setup(git_allocator *allocator);
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/odb_pack.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include <zlib.h>
#include "git2/repository.h"
#include "git2/indexer.h"
#include "git2/sys/odb_backend.h"
#include "delta.h"
#include "futils.h"
#include "hash.h"
#include "midx.h"
#include "mwindow.h"
#include "odb.h"
#include "pack.h"
#include "git2/odb_backend.h"
/* re-freshen pack files no more than every 2 seconds */
#define FRESHEN_FREQUENCY 2
struct pack_backend {
git_odb_backend parent;
git_midx_file *midx;
git_vector midx_packs;
git_vector packs;
struct git_pack_file *last_found;
char *pack_folder;
};
struct pack_writepack {
struct git_odb_writepack parent;
git_indexer *indexer;
};
/**
* The wonderful tale of a Packed Object lookup query
* ===================================================
* A riveting and epic story of epicness and ASCII
* art, presented by yours truly,
* Sir Vicent of Marti
*
*
* Chapter 1: Once upon a time...
* Initialization of the Pack Backend
* --------------------------------------------------
*
* # git_odb_backend_pack
* | Creates the pack backend structure, initializes the
* | callback pointers to our default read() and exist() methods,
* | and tries to find the `pack` folder, if it exists. ODBs without a `pack`
* | folder are ignored altogether. If there is a `pack` folder, it tries to
* | preload all the known packfiles in the ODB.
* |
* |-# pack_backend__refresh
* | The `multi-pack-index` is loaded if it exists and is valid.
* | Then we run a `dirent` callback through every file in the pack folder,
* | even those present in `multi-pack-index`. The unindexed packfiles are
* | then sorted according to a sorting callback.
* |
* |-# refresh_multi_pack_index
* | Detect the presence of the `multi-pack-index` file. If it needs to be
* | refreshed, frees the old copy and tries to load the new one, together
* | with all the packfiles it indexes. If the process fails, fall back to
* | the old behavior, as if the `multi-pack-index` file was not there.
* |
* |-# packfile_load__cb
* | | This callback is called from `dirent` with every single file
* | | inside the pack folder. We find the packs by actually locating
* | | their index (ends in ".idx"). From that index, we verify that
* | | the corresponding packfile exists and is valid, and if so, we
* | | add it to the pack list.
* | |
* | # git_mwindow_get_pack
* | Make sure that there's a packfile to back this index, and store
* | some very basic information regarding the packfile itself,
* | such as the full path, the size, and the modification time.
* | We don't actually open the packfile to check for internal consistency.
* |
* |-# packfile_sort__cb
* Sort all the preloaded packs according to some specific criteria:
* we prioritize the "newer" packs because it's more likely they
* contain the objects we are looking for, and we prioritize local
* packs over remote ones.
*
*
*
* Chapter 2: To be, or not to be...
* A standard packed `exist` query for an OID
* --------------------------------------------------
*
* # pack_backend__exists / pack_backend__exists_prefix
* | Check if the given SHA1 oid (or a SHA1 oid prefix) exists in any of the
* | packs that have been loaded for our ODB.
* |
* |-# pack_entry_find / pack_entry_find_prefix
* | If there is a multi-pack-index present, search the SHA1 oid in that
* | index first. If it is not found there, iterate through all the unindexed
* | packs that have been preloaded (starting by the pack where the latest
* | object was found) to try to find the OID in one of them.
* |
* |-# git_midx_entry_find
* | Search for the SHA1 oid in the multi-pack-index. See
* | <https://github.com/git/git/blob/master/Documentation/technical/pack-format.txt>
* | for specifics on the multi-pack-index format and how do we find
* | entries in it.
* |
* |-# git_pack_entry_find
* | Check the index of an individual unindexed pack to see if the SHA1
* | OID can be found. If we can find the offset to that SHA1 inside of the
* | index, that means the object is contained inside of the packfile and
* | we can stop searching. Before returning, we verify that the
* | packfile behing the index we are searching still exists on disk.
* |
* |-# pack_entry_find_offset
* | Mmap the actual index file to disk if it hasn't been opened
* | yet, and run a binary search through it to find the OID.
* | See <https://github.com/git/git/blob/master/Documentation/technical/pack-format.txt>
* | for specifics on the Packfile Index format and how do we find
* | entries in it.
* |
* |-# pack_index_open
* | Guess the name of the index based on the full path to the
* | packfile, open it and verify its contents. Only if the index
* | has not been opened already.
* |
* |-# pack_index_check
* Mmap the index file and do a quick run through the header
* to guess the index version (right now we support v1 and v2),
* and to verify that the size of the index makes sense.
*
*
*
* Chapter 3: The neverending story...
* A standard packed `lookup` query for an OID
* --------------------------------------------------
*
* # pack_backend__read / pack_backend__read_prefix
* | Check if the given SHA1 oid (or a SHA1 oid prefix) exists in any of the
* | packs that have been loaded for our ODB. If it does, open the packfile and
* | read from it.
* |
* |-# git_packfile_unpack
* Armed with a packfile and the offset within it, we can finally unpack
* the object pointed at by the SHA1 oid. This involves mmapping part of
* the `.pack` file, and uncompressing the object within it (if it is
* stored in the undelfitied representation), or finding a base object and
* applying some deltas to its uncompressed representation (if it is stored
* in the deltified representation). See
* <https://github.com/git/git/blob/master/Documentation/technical/pack-format.txt>
* for specifics on the Packfile format and how do we read from it.
*
*/
/***********************************************************
*
* FORWARD DECLARATIONS
*
***********************************************************/
static int packfile_sort__cb(const void *a_, const void *b_);
static int packfile_load__cb(void *_data, git_buf *path);
static int packfile_byname_search_cmp(const void *path, const void *pack_entry);
static int pack_entry_find(struct git_pack_entry *e,
struct pack_backend *backend, const git_oid *oid);
/* Can find the offset of an object given
* a prefix of an identifier.
* Sets GIT_EAMBIGUOUS if short oid is ambiguous.
* This method assumes that len is between
* GIT_OID_MINPREFIXLEN and GIT_OID_HEXSZ.
*/
static int pack_entry_find_prefix(
struct git_pack_entry *e,
struct pack_backend *backend,
const git_oid *short_oid,
size_t len);
/***********************************************************
*
* PACK WINDOW MANAGEMENT
*
***********************************************************/
static int packfile_byname_search_cmp(const void *path_, const void *p_)
{
const git_buf *path = (const git_buf *)path_;
const struct git_pack_file *p = (const struct git_pack_file *)p_;
return strncmp(p->pack_name, git_buf_cstr(path), git_buf_len(path));
}
static int packfile_sort__cb(const void *a_, const void *b_)
{
const struct git_pack_file *a = a_;
const struct git_pack_file *b = b_;
int st;
/*
* Local packs tend to contain objects specific to our
* variant of the project than remote ones. In addition,
* remote ones could be on a network mounted filesystem.
* Favor local ones for these reasons.
*/
st = a->pack_local - b->pack_local;
if (st)
return -st;
/*
* Younger packs tend to contain more recent objects,
* and more recent objects tend to get accessed more
* often.
*/
if (a->mtime < b->mtime)
return 1;
else if (a->mtime == b->mtime)
return 0;
return -1;
}
static int packfile_load__cb(void *data, git_buf *path)
{
struct pack_backend *backend = data;
struct git_pack_file *pack;
const char *path_str = git_buf_cstr(path);
git_buf index_prefix = GIT_BUF_INIT;
size_t cmp_len = git_buf_len(path);
int error;
if (cmp_len <= strlen(".idx") || git__suffixcmp(path_str, ".idx") != 0)
return 0; /* not an index */
cmp_len -= strlen(".idx");
git_buf_attach_notowned(&index_prefix, path_str, cmp_len);
if (git_vector_search2(NULL, &backend->midx_packs, packfile_byname_search_cmp, &index_prefix) == 0)
return 0;
if (git_vector_search2(NULL, &backend->packs, packfile_byname_search_cmp, &index_prefix) == 0)
return 0;
error = git_mwindow_get_pack(&pack, path->ptr);
/* ignore missing .pack file as git does */
if (error == GIT_ENOTFOUND) {
git_error_clear();
return 0;
}
if (!error)
error = git_vector_insert(&backend->packs, pack);
return error;
}
static int pack_entry_find(struct git_pack_entry *e, struct pack_backend *backend, const git_oid *oid)
{
struct git_pack_file *last_found = backend->last_found, *p;
git_midx_entry midx_entry;
size_t i;
if (backend->midx &&
git_midx_entry_find(&midx_entry, backend->midx, oid, GIT_OID_HEXSZ) == 0 &&
midx_entry.pack_index < git_vector_length(&backend->midx_packs)) {
e->offset = midx_entry.offset;
git_oid_cpy(&e->sha1, &midx_entry.sha1);
e->p = git_vector_get(&backend->midx_packs, midx_entry.pack_index);
return 0;
}
if (last_found &&
git_pack_entry_find(e, last_found, oid, GIT_OID_HEXSZ) == 0)
return 0;
git_vector_foreach(&backend->packs, i, p) {
if (p == last_found)
continue;
if (git_pack_entry_find(e, p, oid, GIT_OID_HEXSZ) == 0) {
backend->last_found = p;
return 0;
}
}
return git_odb__error_notfound(
"failed to find pack entry", oid, GIT_OID_HEXSZ);
}
static int pack_entry_find_prefix(
struct git_pack_entry *e,
struct pack_backend *backend,
const git_oid *short_oid,
size_t len)
{
int error;
size_t i;
git_oid found_full_oid = {{0}};
bool found = false;
struct git_pack_file *last_found = backend->last_found, *p;
git_midx_entry midx_entry;
if (backend->midx) {
error = git_midx_entry_find(&midx_entry, backend->midx, short_oid, len);
if (error == GIT_EAMBIGUOUS)
return error;
if (!error && midx_entry.pack_index < git_vector_length(&backend->midx_packs)) {
e->offset = midx_entry.offset;
git_oid_cpy(&e->sha1, &midx_entry.sha1);
e->p = git_vector_get(&backend->midx_packs, midx_entry.pack_index);
git_oid_cpy(&found_full_oid, &e->sha1);
found = true;
}
}
if (last_found) {
error = git_pack_entry_find(e, last_found, short_oid, len);
if (error == GIT_EAMBIGUOUS)
return error;
if (!error) {
if (found && git_oid_cmp(&e->sha1, &found_full_oid))
return git_odb__error_ambiguous("found multiple pack entries");
git_oid_cpy(&found_full_oid, &e->sha1);
found = true;
}
}
git_vector_foreach(&backend->packs, i, p) {
if (p == last_found)
continue;
error = git_pack_entry_find(e, p, short_oid, len);
if (error == GIT_EAMBIGUOUS)
return error;
if (!error) {
if (found && git_oid_cmp(&e->sha1, &found_full_oid))
return git_odb__error_ambiguous("found multiple pack entries");
git_oid_cpy(&found_full_oid, &e->sha1);
found = true;
backend->last_found = p;
}
}
if (!found)
return git_odb__error_notfound("no matching pack entry for prefix",
short_oid, len);
else
return 0;
}
/***********************************************************
*
* MULTI-PACK-INDEX SUPPORT
*
* Functions needed to support the multi-pack-index.
*
***********************************************************/
/*
* Remove the multi-pack-index, and move all midx_packs to packs.
*/
static int remove_multi_pack_index(struct pack_backend *backend)
{
size_t i, j = git_vector_length(&backend->packs);
struct pack_backend *p;
int error = git_vector_size_hint(
&backend->packs,
j + git_vector_length(&backend->midx_packs));
if (error < 0)
return error;
git_vector_foreach(&backend->midx_packs, i, p)
git_vector_set(NULL, &backend->packs, j++, p);
git_vector_clear(&backend->midx_packs);
git_midx_free(backend->midx);
backend->midx = NULL;
return 0;
}
/*
* Loads a single .pack file referred to by the multi-pack-index. These must
* match the order in which they are declared in the multi-pack-index file,
* since these files are referred to by their index.
*/
static int process_multi_pack_index_pack(
struct pack_backend *backend,
size_t i,
const char *packfile_name)
{
int error;
struct git_pack_file *pack;
size_t found_position;
git_buf pack_path = GIT_BUF_INIT, index_prefix = GIT_BUF_INIT;
error = git_buf_joinpath(&pack_path, backend->pack_folder, packfile_name);
if (error < 0)
return error;
/* This is ensured by midx_parse_packfile_name() */
if (git_buf_len(&pack_path) <= strlen(".idx") || git__suffixcmp(git_buf_cstr(&pack_path), ".idx") != 0)
return git_odb__error_notfound("midx file contained a non-index", NULL, 0);
git_buf_attach_notowned(&index_prefix, git_buf_cstr(&pack_path), git_buf_len(&pack_path) - strlen(".idx"));
if (git_vector_search2(&found_position, &backend->packs, packfile_byname_search_cmp, &index_prefix) == 0) {
/* Pack was found in the packs list. Moving it to the midx_packs list. */
git_buf_dispose(&pack_path);
git_vector_set(NULL, &backend->midx_packs, i, git_vector_get(&backend->packs, found_position));
git_vector_remove(&backend->packs, found_position);
return 0;
}
/* Pack was not found. Allocate a new one. */
error = git_mwindow_get_pack(&pack, git_buf_cstr(&pack_path));
git_buf_dispose(&pack_path);
if (error < 0)
return error;
git_vector_set(NULL, &backend->midx_packs, i, pack);
return 0;
}
/*
* Reads the multi-pack-index. If this fails for whatever reason, the
* multi-pack-index object is freed, and all the packfiles that are related to
* it are moved to the unindexed packfiles vector.
*/
static int refresh_multi_pack_index(struct pack_backend *backend)
{
int error;
git_buf midx_path = GIT_BUF_INIT;
const char *packfile_name;
size_t i;
error = git_buf_joinpath(&midx_path, backend->pack_folder, "multi-pack-index");
if (error < 0)
return error;
/*
* Check whether the multi-pack-index has changed. If it has, close any
* old multi-pack-index and move all the packfiles to the unindexed
* packs. This is done to prevent losing any open packfiles in case
* refreshing the new multi-pack-index fails, or the file is deleted.
*/
if (backend->midx) {
if (!git_midx_needs_refresh(backend->midx, git_buf_cstr(&midx_path))) {
git_buf_dispose(&midx_path);
return 0;
}
error = remove_multi_pack_index(backend);
if (error < 0) {
git_buf_dispose(&midx_path);
return error;
}
}
error = git_midx_open(&backend->midx, git_buf_cstr(&midx_path));
git_buf_dispose(&midx_path);
if (error < 0)
return error;
git_vector_resize_to(&backend->midx_packs, git_vector_length(&backend->midx->packfile_names));
git_vector_foreach(&backend->midx->packfile_names, i, packfile_name) {
error = process_multi_pack_index_pack(backend, i, packfile_name);
if (error < 0) {
/*
* Something failed during reading multi-pack-index.
* Restore the state of backend as if the
* multi-pack-index was never there, and move all
* packfiles that have been processed so far to the
* unindexed packs.
*/
git_vector_resize_to(&backend->midx_packs, i);
remove_multi_pack_index(backend);
return error;
}
}
return 0;
}
/***********************************************************
*
* PACKED BACKEND PUBLIC API
*
* Implement the git_odb_backend API calls
*
***********************************************************/
static int pack_backend__refresh(git_odb_backend *backend_)
{
int error;
struct stat st;
git_buf path = GIT_BUF_INIT;
struct pack_backend *backend = (struct pack_backend *)backend_;
if (backend->pack_folder == NULL)
return 0;
if (p_stat(backend->pack_folder, &st) < 0 || !S_ISDIR(st.st_mode))
return git_odb__error_notfound("failed to refresh packfiles", NULL, 0);
if (refresh_multi_pack_index(backend) < 0) {
/*
* It is okay if this fails. We will just not use the
* multi-pack-index in this case.
*/
git_error_clear();
}
/* reload all packs */
git_buf_sets(&path, backend->pack_folder);
error = git_path_direach(&path, 0, packfile_load__cb, backend);
git_buf_dispose(&path);
git_vector_sort(&backend->packs);
return error;
}
static int pack_backend__read_header(
size_t *len_p, git_object_t *type_p,
struct git_odb_backend *backend, const git_oid *oid)
{
struct git_pack_entry e;
int error;
GIT_ASSERT_ARG(len_p);
GIT_ASSERT_ARG(type_p);
GIT_ASSERT_ARG(backend);
GIT_ASSERT_ARG(oid);
if ((error = pack_entry_find(&e, (struct pack_backend *)backend, oid)) < 0)
return error;
return git_packfile_resolve_header(len_p, type_p, e.p, e.offset);
}
static int pack_backend__freshen(
git_odb_backend *backend, const git_oid *oid)
{
struct git_pack_entry e;
time_t now;
int error;
if ((error = pack_entry_find(&e, (struct pack_backend *)backend, oid)) < 0)
return error;
now = time(NULL);
if (e.p->last_freshen > now - FRESHEN_FREQUENCY)
return 0;
if ((error = git_futils_touch(e.p->pack_name, &now)) < 0)
return error;
e.p->last_freshen = now;
return 0;
}
static int pack_backend__read(
void **buffer_p, size_t *len_p, git_object_t *type_p,
git_odb_backend *backend, const git_oid *oid)
{
struct git_pack_entry e;
git_rawobj raw = {NULL};
int error;
if ((error = pack_entry_find(&e, (struct pack_backend *)backend, oid)) < 0 ||
(error = git_packfile_unpack(&raw, e.p, &e.offset)) < 0)
return error;
*buffer_p = raw.data;
*len_p = raw.len;
*type_p = raw.type;
return 0;
}
static int pack_backend__read_prefix(
git_oid *out_oid,
void **buffer_p,
size_t *len_p,
git_object_t *type_p,
git_odb_backend *backend,
const git_oid *short_oid,
size_t len)
{
int error = 0;
if (len < GIT_OID_MINPREFIXLEN)
error = git_odb__error_ambiguous("prefix length too short");
else if (len >= GIT_OID_HEXSZ) {
/* We can fall back to regular read method */
error = pack_backend__read(buffer_p, len_p, type_p, backend, short_oid);
if (!error)
git_oid_cpy(out_oid, short_oid);
} else {
struct git_pack_entry e;
git_rawobj raw = {NULL};
if ((error = pack_entry_find_prefix(
&e, (struct pack_backend *)backend, short_oid, len)) == 0 &&
(error = git_packfile_unpack(&raw, e.p, &e.offset)) == 0)
{
*buffer_p = raw.data;
*len_p = raw.len;
*type_p = raw.type;
git_oid_cpy(out_oid, &e.sha1);
}
}
return error;
}
static int pack_backend__exists(git_odb_backend *backend, const git_oid *oid)
{
struct git_pack_entry e;
return pack_entry_find(&e, (struct pack_backend *)backend, oid) == 0;
}
static int pack_backend__exists_prefix(
git_oid *out, git_odb_backend *backend, const git_oid *short_id, size_t len)
{
int error;
struct pack_backend *pb = (struct pack_backend *)backend;
struct git_pack_entry e = {0};
error = pack_entry_find_prefix(&e, pb, short_id, len);
git_oid_cpy(out, &e.sha1);
return error;
}
static int pack_backend__foreach(git_odb_backend *_backend, git_odb_foreach_cb cb, void *data)
{
int error;
struct git_pack_file *p;
struct pack_backend *backend;
unsigned int i;
GIT_ASSERT_ARG(_backend);
GIT_ASSERT_ARG(cb);
backend = (struct pack_backend *)_backend;
/* Make sure we know about the packfiles */
if ((error = pack_backend__refresh(_backend)) != 0)
return error;
if (backend->midx && (error = git_midx_foreach_entry(backend->midx, cb, data)) != 0)
return error;
git_vector_foreach(&backend->packs, i, p) {
if ((error = git_pack_foreach_entry(p, cb, data)) != 0)
return error;
}
return 0;
}
static int pack_backend__writepack_append(struct git_odb_writepack *_writepack, const void *data, size_t size, git_indexer_progress *stats)
{
struct pack_writepack *writepack = (struct pack_writepack *)_writepack;
GIT_ASSERT_ARG(writepack);
return git_indexer_append(writepack->indexer, data, size, stats);
}
static int pack_backend__writepack_commit(struct git_odb_writepack *_writepack, git_indexer_progress *stats)
{
struct pack_writepack *writepack = (struct pack_writepack *)_writepack;
GIT_ASSERT_ARG(writepack);
return git_indexer_commit(writepack->indexer, stats);
}
static void pack_backend__writepack_free(struct git_odb_writepack *_writepack)
{
struct pack_writepack *writepack;
if (!_writepack)
return;
writepack = (struct pack_writepack *)_writepack;
git_indexer_free(writepack->indexer);
git__free(writepack);
}
static int pack_backend__writepack(struct git_odb_writepack **out,
git_odb_backend *_backend,
git_odb *odb,
git_indexer_progress_cb progress_cb,
void *progress_payload)
{
git_indexer_options opts = GIT_INDEXER_OPTIONS_INIT;
struct pack_backend *backend;
struct pack_writepack *writepack;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(_backend);
*out = NULL;
opts.progress_cb = progress_cb;
opts.progress_cb_payload = progress_payload;
backend = (struct pack_backend *)_backend;
writepack = git__calloc(1, sizeof(struct pack_writepack));
GIT_ERROR_CHECK_ALLOC(writepack);
if (git_indexer_new(&writepack->indexer,
backend->pack_folder, 0, odb, &opts) < 0) {
git__free(writepack);
return -1;
}
writepack->parent.backend = _backend;
writepack->parent.append = pack_backend__writepack_append;
writepack->parent.commit = pack_backend__writepack_commit;
writepack->parent.free = pack_backend__writepack_free;
*out = (git_odb_writepack *)writepack;
return 0;
}
static int get_idx_path(
git_buf *idx_path,
struct pack_backend *backend,
struct git_pack_file *p)
{
size_t path_len;
int error;
error = git_path_prettify(idx_path, p->pack_name, backend->pack_folder);
if (error < 0)
return error;
path_len = git_buf_len(idx_path);
if (path_len <= strlen(".pack") || git__suffixcmp(git_buf_cstr(idx_path), ".pack") != 0)
return git_odb__error_notfound("packfile does not end in .pack", NULL, 0);
path_len -= strlen(".pack");
error = git_buf_splice(idx_path, path_len, strlen(".pack"), ".idx", strlen(".idx"));
if (error < 0)
return error;
return 0;
}
static int pack_backend__writemidx(git_odb_backend *_backend)
{
struct pack_backend *backend;
git_midx_writer *w = NULL;
struct git_pack_file *p;
size_t i;
int error = 0;
GIT_ASSERT_ARG(_backend);
backend = (struct pack_backend *)_backend;
error = git_midx_writer_new(&w, backend->pack_folder);
if (error < 0)
return error;
git_vector_foreach(&backend->midx_packs, i, p) {
git_buf idx_path = GIT_BUF_INIT;
error = get_idx_path(&idx_path, backend, p);
if (error < 0)
goto cleanup;
error = git_midx_writer_add(w, git_buf_cstr(&idx_path));
git_buf_dispose(&idx_path);
if (error < 0)
goto cleanup;
}
git_vector_foreach(&backend->packs, i, p) {
git_buf idx_path = GIT_BUF_INIT;
error = get_idx_path(&idx_path, backend, p);
if (error < 0)
goto cleanup;
error = git_midx_writer_add(w, git_buf_cstr(&idx_path));
git_buf_dispose(&idx_path);
if (error < 0)
goto cleanup;
}
/*
* Invalidate the previous midx before writing the new one.
*/
error = remove_multi_pack_index(backend);
if (error < 0)
goto cleanup;
error = git_midx_writer_commit(w);
if (error < 0)
goto cleanup;
error = refresh_multi_pack_index(backend);
cleanup:
git_midx_writer_free(w);
return error;
}
static void pack_backend__free(git_odb_backend *_backend)
{
struct pack_backend *backend;
struct git_pack_file *p;
size_t i;
if (!_backend)
return;
backend = (struct pack_backend *)_backend;
git_vector_foreach(&backend->midx_packs, i, p)
git_mwindow_put_pack(p);
git_vector_foreach(&backend->packs, i, p)
git_mwindow_put_pack(p);
git_midx_free(backend->midx);
git_vector_free(&backend->midx_packs);
git_vector_free(&backend->packs);
git__free(backend->pack_folder);
git__free(backend);
}
static int pack_backend__alloc(struct pack_backend **out, size_t initial_size)
{
struct pack_backend *backend = git__calloc(1, sizeof(struct pack_backend));
GIT_ERROR_CHECK_ALLOC(backend);
if (git_vector_init(&backend->midx_packs, 0, NULL) < 0) {
git__free(backend);
return -1;
}
if (git_vector_init(&backend->packs, initial_size, packfile_sort__cb) < 0) {
git_vector_free(&backend->midx_packs);
git__free(backend);
return -1;
}
backend->parent.version = GIT_ODB_BACKEND_VERSION;
backend->parent.read = &pack_backend__read;
backend->parent.read_prefix = &pack_backend__read_prefix;
backend->parent.read_header = &pack_backend__read_header;
backend->parent.exists = &pack_backend__exists;
backend->parent.exists_prefix = &pack_backend__exists_prefix;
backend->parent.refresh = &pack_backend__refresh;
backend->parent.foreach = &pack_backend__foreach;
backend->parent.writepack = &pack_backend__writepack;
backend->parent.writemidx = &pack_backend__writemidx;
backend->parent.freshen = &pack_backend__freshen;
backend->parent.free = &pack_backend__free;
*out = backend;
return 0;
}
int git_odb_backend_one_pack(git_odb_backend **backend_out, const char *idx)
{
struct pack_backend *backend = NULL;
struct git_pack_file *packfile = NULL;
if (pack_backend__alloc(&backend, 1) < 0)
return -1;
if (git_mwindow_get_pack(&packfile, idx) < 0 ||
git_vector_insert(&backend->packs, packfile) < 0)
{
pack_backend__free((git_odb_backend *)backend);
return -1;
}
*backend_out = (git_odb_backend *)backend;
return 0;
}
int git_odb_backend_pack(git_odb_backend **backend_out, const char *objects_dir)
{
int error = 0;
struct pack_backend *backend = NULL;
git_buf path = GIT_BUF_INIT;
if (pack_backend__alloc(&backend, 8) < 0)
return -1;
if (!(error = git_buf_joinpath(&path, objects_dir, "pack")) &&
git_path_isdir(git_buf_cstr(&path)))
{
backend->pack_folder = git_buf_detach(&path);
error = pack_backend__refresh((git_odb_backend *)backend);
}
if (error < 0) {
pack_backend__free((git_odb_backend *)backend);
backend = NULL;
}
*backend_out = (git_odb_backend *)backend;
git_buf_dispose(&path);
return error;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/checkout.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_checkout_h__
#define INCLUDE_checkout_h__
#include "common.h"
#include "git2/checkout.h"
#include "iterator.h"
#define GIT_CHECKOUT__NOTIFY_CONFLICT_TREE (1u << 12)
/**
* Update the working directory to match the target iterator. The
* expected baseline value can be passed in via the checkout options
* or else will default to the HEAD commit.
*/
extern int git_checkout_iterator(
git_iterator *target,
git_index *index,
const git_checkout_options *opts);
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/pathspec.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "pathspec.h"
#include "git2/pathspec.h"
#include "git2/diff.h"
#include "attr_file.h"
#include "iterator.h"
#include "repository.h"
#include "index.h"
#include "bitvec.h"
#include "diff.h"
#include "wildmatch.h"
/* what is the common non-wildcard prefix for all items in the pathspec */
char *git_pathspec_prefix(const git_strarray *pathspec)
{
git_buf prefix = GIT_BUF_INIT;
const char *scan;
if (!pathspec || !pathspec->count ||
git_buf_common_prefix(&prefix, pathspec->strings, pathspec->count) < 0)
return NULL;
/* diff prefix will only be leading non-wildcards */
for (scan = prefix.ptr; *scan; ++scan) {
if (git__iswildcard(*scan) &&
(scan == prefix.ptr || (*(scan - 1) != '\\')))
break;
}
git_buf_truncate(&prefix, scan - prefix.ptr);
if (prefix.size <= 0) {
git_buf_dispose(&prefix);
return NULL;
}
git_buf_unescape(&prefix);
return git_buf_detach(&prefix);
}
/* is there anything in the spec that needs to be filtered on */
bool git_pathspec_is_empty(const git_strarray *pathspec)
{
size_t i;
if (pathspec == NULL)
return true;
for (i = 0; i < pathspec->count; ++i) {
const char *str = pathspec->strings[i];
if (str && str[0])
return false;
}
return true;
}
/* build a vector of fnmatch patterns to evaluate efficiently */
int git_pathspec__vinit(
git_vector *vspec, const git_strarray *strspec, git_pool *strpool)
{
size_t i;
memset(vspec, 0, sizeof(*vspec));
if (git_pathspec_is_empty(strspec))
return 0;
if (git_vector_init(vspec, strspec->count, NULL) < 0)
return -1;
for (i = 0; i < strspec->count; ++i) {
int ret;
const char *pattern = strspec->strings[i];
git_attr_fnmatch *match = git__calloc(1, sizeof(git_attr_fnmatch));
if (!match)
return -1;
match->flags = GIT_ATTR_FNMATCH_ALLOWSPACE | GIT_ATTR_FNMATCH_ALLOWNEG;
ret = git_attr_fnmatch__parse(match, strpool, NULL, &pattern);
if (ret == GIT_ENOTFOUND) {
git__free(match);
continue;
} else if (ret < 0) {
git__free(match);
return ret;
}
if (git_vector_insert(vspec, match) < 0)
return -1;
}
return 0;
}
/* free data from the pathspec vector */
void git_pathspec__vfree(git_vector *vspec)
{
git_vector_free_deep(vspec);
}
struct pathspec_match_context {
int wildmatch_flags;
int (*strcomp)(const char *, const char *);
int (*strncomp)(const char *, const char *, size_t);
};
static void pathspec_match_context_init(
struct pathspec_match_context *ctxt,
bool disable_fnmatch,
bool casefold)
{
if (disable_fnmatch)
ctxt->wildmatch_flags = -1;
else if (casefold)
ctxt->wildmatch_flags = WM_CASEFOLD;
else
ctxt->wildmatch_flags = 0;
if (casefold) {
ctxt->strcomp = git__strcasecmp;
ctxt->strncomp = git__strncasecmp;
} else {
ctxt->strcomp = git__strcmp;
ctxt->strncomp = git__strncmp;
}
}
static int pathspec_match_one(
const git_attr_fnmatch *match,
struct pathspec_match_context *ctxt,
const char *path)
{
int result = (match->flags & GIT_ATTR_FNMATCH_MATCH_ALL) ? 0 : WM_NOMATCH;
if (result == WM_NOMATCH)
result = ctxt->strcomp(match->pattern, path) ? WM_NOMATCH : 0;
if (ctxt->wildmatch_flags >= 0 && result == WM_NOMATCH)
result = wildmatch(match->pattern, path, ctxt->wildmatch_flags);
/* if we didn't match, look for exact dirname prefix match */
if (result == WM_NOMATCH &&
(match->flags & GIT_ATTR_FNMATCH_HASWILD) == 0 &&
ctxt->strncomp(path, match->pattern, match->length) == 0 &&
path[match->length] == '/')
result = 0;
/* if we didn't match and this is a negative match, check for exact
* match of filename with leading '!'
*/
if (result == WM_NOMATCH &&
(match->flags & GIT_ATTR_FNMATCH_NEGATIVE) != 0 &&
*path == '!' &&
ctxt->strncomp(path + 1, match->pattern, match->length) == 0 &&
(!path[match->length + 1] || path[match->length + 1] == '/'))
return 1;
if (result == 0)
return (match->flags & GIT_ATTR_FNMATCH_NEGATIVE) ? 0 : 1;
return -1;
}
static int git_pathspec__match_at(
size_t *matched_at,
const git_vector *vspec,
struct pathspec_match_context *ctxt,
const char *path0,
const char *path1)
{
int result = GIT_ENOTFOUND;
size_t i = 0;
const git_attr_fnmatch *match;
git_vector_foreach(vspec, i, match) {
if (path0 && (result = pathspec_match_one(match, ctxt, path0)) >= 0)
break;
if (path1 && (result = pathspec_match_one(match, ctxt, path1)) >= 0)
break;
}
*matched_at = i;
return result;
}
/* match a path against the vectorized pathspec */
bool git_pathspec__match(
const git_vector *vspec,
const char *path,
bool disable_fnmatch,
bool casefold,
const char **matched_pathspec,
size_t *matched_at)
{
int result;
size_t pos;
struct pathspec_match_context ctxt;
if (matched_pathspec)
*matched_pathspec = NULL;
if (matched_at)
*matched_at = GIT_PATHSPEC_NOMATCH;
if (!vspec || !vspec->length)
return true;
pathspec_match_context_init(&ctxt, disable_fnmatch, casefold);
result = git_pathspec__match_at(&pos, vspec, &ctxt, path, NULL);
if (result >= 0) {
if (matched_pathspec) {
const git_attr_fnmatch *match = git_vector_get(vspec, pos);
*matched_pathspec = match->pattern;
}
if (matched_at)
*matched_at = pos;
}
return (result > 0);
}
int git_pathspec__init(git_pathspec *ps, const git_strarray *paths)
{
int error = 0;
memset(ps, 0, sizeof(*ps));
ps->prefix = git_pathspec_prefix(paths);
if ((error = git_pool_init(&ps->pool, 1)) < 0 ||
(error = git_pathspec__vinit(&ps->pathspec, paths, &ps->pool)) < 0)
git_pathspec__clear(ps);
return error;
}
void git_pathspec__clear(git_pathspec *ps)
{
git__free(ps->prefix);
git_pathspec__vfree(&ps->pathspec);
git_pool_clear(&ps->pool);
memset(ps, 0, sizeof(*ps));
}
int git_pathspec_new(git_pathspec **out, const git_strarray *pathspec)
{
int error = 0;
git_pathspec *ps = git__malloc(sizeof(git_pathspec));
GIT_ERROR_CHECK_ALLOC(ps);
if ((error = git_pathspec__init(ps, pathspec)) < 0) {
git__free(ps);
return error;
}
GIT_REFCOUNT_INC(ps);
*out = ps;
return 0;
}
static void pathspec_free(git_pathspec *ps)
{
git_pathspec__clear(ps);
git__free(ps);
}
void git_pathspec_free(git_pathspec *ps)
{
if (!ps)
return;
GIT_REFCOUNT_DEC(ps, pathspec_free);
}
int git_pathspec_matches_path(
const git_pathspec *ps, uint32_t flags, const char *path)
{
bool no_fnmatch = (flags & GIT_PATHSPEC_NO_GLOB) != 0;
bool casefold = (flags & GIT_PATHSPEC_IGNORE_CASE) != 0;
GIT_ASSERT_ARG(ps);
GIT_ASSERT_ARG(path);
return (0 != git_pathspec__match(
&ps->pathspec, path, no_fnmatch, casefold, NULL, NULL));
}
static void pathspec_match_free(git_pathspec_match_list *m)
{
if (!m)
return;
git_pathspec_free(m->pathspec);
m->pathspec = NULL;
git_array_clear(m->matches);
git_array_clear(m->failures);
git_pool_clear(&m->pool);
git__free(m);
}
static git_pathspec_match_list *pathspec_match_alloc(
git_pathspec *ps, int datatype)
{
git_pathspec_match_list *m = git__calloc(1, sizeof(git_pathspec_match_list));
if (!m)
return NULL;
if (git_pool_init(&m->pool, 1) < 0)
return NULL;
/* need to keep reference to pathspec and increment refcount because
* failures array stores pointers to the pattern strings of the
* pathspec that had no matches
*/
GIT_REFCOUNT_INC(ps);
m->pathspec = ps;
m->datatype = datatype;
return m;
}
GIT_INLINE(size_t) pathspec_mark_pattern(git_bitvec *used, size_t pos)
{
if (!git_bitvec_get(used, pos)) {
git_bitvec_set(used, pos, true);
return 1;
}
return 0;
}
static size_t pathspec_mark_remaining(
git_bitvec *used,
git_vector *patterns,
struct pathspec_match_context *ctxt,
size_t start,
const char *path0,
const char *path1)
{
size_t count = 0;
if (path1 == path0)
path1 = NULL;
for (; start < patterns->length; ++start) {
const git_attr_fnmatch *pat = git_vector_get(patterns, start);
if (git_bitvec_get(used, start))
continue;
if (path0 && pathspec_match_one(pat, ctxt, path0) > 0)
count += pathspec_mark_pattern(used, start);
else if (path1 && pathspec_match_one(pat, ctxt, path1) > 0)
count += pathspec_mark_pattern(used, start);
}
return count;
}
static int pathspec_build_failure_array(
git_pathspec_string_array_t *failures,
git_vector *patterns,
git_bitvec *used,
git_pool *pool)
{
size_t pos;
char **failed;
const git_attr_fnmatch *pat;
for (pos = 0; pos < patterns->length; ++pos) {
if (git_bitvec_get(used, pos))
continue;
if ((failed = git_array_alloc(*failures)) == NULL)
return -1;
pat = git_vector_get(patterns, pos);
if ((*failed = git_pool_strdup(pool, pat->pattern)) == NULL)
return -1;
}
return 0;
}
static int pathspec_match_from_iterator(
git_pathspec_match_list **out,
git_iterator *iter,
uint32_t flags,
git_pathspec *ps)
{
int error = 0;
git_pathspec_match_list *m = NULL;
const git_index_entry *entry = NULL;
struct pathspec_match_context ctxt;
git_vector *patterns = &ps->pathspec;
bool find_failures = out && (flags & GIT_PATHSPEC_FIND_FAILURES) != 0;
bool failures_only = !out || (flags & GIT_PATHSPEC_FAILURES_ONLY) != 0;
size_t pos, used_ct = 0, found_files = 0;
git_index *index = NULL;
git_bitvec used_patterns;
char **file;
if (git_bitvec_init(&used_patterns, patterns->length) < 0)
return -1;
if (out) {
*out = m = pathspec_match_alloc(ps, PATHSPEC_DATATYPE_STRINGS);
GIT_ERROR_CHECK_ALLOC(m);
}
if ((error = git_iterator_reset_range(iter, ps->prefix, ps->prefix)) < 0)
goto done;
if (git_iterator_type(iter) == GIT_ITERATOR_WORKDIR &&
(error = git_repository_index__weakptr(
&index, git_iterator_owner(iter))) < 0)
goto done;
pathspec_match_context_init(
&ctxt, (flags & GIT_PATHSPEC_NO_GLOB) != 0,
git_iterator_ignore_case(iter));
while (!(error = git_iterator_advance(&entry, iter))) {
/* search for match with entry->path */
int result = git_pathspec__match_at(
&pos, patterns, &ctxt, entry->path, NULL);
/* no matches for this path */
if (result < 0)
continue;
/* if result was a negative pattern match, then don't list file */
if (!result) {
used_ct += pathspec_mark_pattern(&used_patterns, pos);
continue;
}
/* check if path is ignored and untracked */
if (index != NULL &&
git_iterator_current_is_ignored(iter) &&
git_index__find_pos(NULL, index, entry->path, 0, GIT_INDEX_STAGE_ANY) < 0)
continue;
/* mark the matched pattern as used */
used_ct += pathspec_mark_pattern(&used_patterns, pos);
++found_files;
/* if find_failures is on, check if any later patterns also match */
if (find_failures && used_ct < patterns->length)
used_ct += pathspec_mark_remaining(
&used_patterns, patterns, &ctxt, pos + 1, entry->path, NULL);
/* if only looking at failures, exit early or just continue */
if (failures_only || !out) {
if (used_ct == patterns->length)
break;
continue;
}
/* insert matched path into matches array */
if ((file = (char **)git_array_alloc(m->matches)) == NULL ||
(*file = git_pool_strdup(&m->pool, entry->path)) == NULL) {
error = -1;
goto done;
}
}
if (error < 0 && error != GIT_ITEROVER)
goto done;
error = 0;
/* insert patterns that had no matches into failures array */
if (find_failures && used_ct < patterns->length &&
(error = pathspec_build_failure_array(
&m->failures, patterns, &used_patterns, &m->pool)) < 0)
goto done;
/* if every pattern failed to match, then we have failed */
if ((flags & GIT_PATHSPEC_NO_MATCH_ERROR) != 0 && !found_files) {
git_error_set(GIT_ERROR_INVALID, "no matching files were found");
error = GIT_ENOTFOUND;
}
done:
git_bitvec_free(&used_patterns);
if (error < 0) {
pathspec_match_free(m);
if (out) *out = NULL;
}
return error;
}
static git_iterator_flag_t pathspec_match_iter_flags(uint32_t flags)
{
git_iterator_flag_t f = 0;
if ((flags & GIT_PATHSPEC_IGNORE_CASE) != 0)
f |= GIT_ITERATOR_IGNORE_CASE;
else if ((flags & GIT_PATHSPEC_USE_CASE) != 0)
f |= GIT_ITERATOR_DONT_IGNORE_CASE;
return f;
}
int git_pathspec_match_workdir(
git_pathspec_match_list **out,
git_repository *repo,
uint32_t flags,
git_pathspec *ps)
{
git_iterator *iter;
git_iterator_options iter_opts = GIT_ITERATOR_OPTIONS_INIT;
int error = 0;
GIT_ASSERT_ARG(repo);
iter_opts.flags = pathspec_match_iter_flags(flags);
if (!(error = git_iterator_for_workdir(&iter, repo, NULL, NULL, &iter_opts))) {
error = pathspec_match_from_iterator(out, iter, flags, ps);
git_iterator_free(iter);
}
return error;
}
int git_pathspec_match_index(
git_pathspec_match_list **out,
git_index *index,
uint32_t flags,
git_pathspec *ps)
{
git_iterator *iter;
git_iterator_options iter_opts = GIT_ITERATOR_OPTIONS_INIT;
int error = 0;
GIT_ASSERT_ARG(index);
iter_opts.flags = pathspec_match_iter_flags(flags);
if (!(error = git_iterator_for_index(&iter, git_index_owner(index), index, &iter_opts))) {
error = pathspec_match_from_iterator(out, iter, flags, ps);
git_iterator_free(iter);
}
return error;
}
int git_pathspec_match_tree(
git_pathspec_match_list **out,
git_tree *tree,
uint32_t flags,
git_pathspec *ps)
{
git_iterator *iter;
git_iterator_options iter_opts = GIT_ITERATOR_OPTIONS_INIT;
int error = 0;
GIT_ASSERT_ARG(tree);
iter_opts.flags = pathspec_match_iter_flags(flags);
if (!(error = git_iterator_for_tree(&iter, tree, &iter_opts))) {
error = pathspec_match_from_iterator(out, iter, flags, ps);
git_iterator_free(iter);
}
return error;
}
int git_pathspec_match_diff(
git_pathspec_match_list **out,
git_diff *diff,
uint32_t flags,
git_pathspec *ps)
{
int error = 0;
git_pathspec_match_list *m = NULL;
struct pathspec_match_context ctxt;
git_vector *patterns = &ps->pathspec;
bool find_failures = out && (flags & GIT_PATHSPEC_FIND_FAILURES) != 0;
bool failures_only = !out || (flags & GIT_PATHSPEC_FAILURES_ONLY) != 0;
size_t i, pos, used_ct = 0, found_deltas = 0;
const git_diff_delta *delta, **match;
git_bitvec used_patterns;
GIT_ASSERT_ARG(diff);
if (git_bitvec_init(&used_patterns, patterns->length) < 0)
return -1;
if (out) {
*out = m = pathspec_match_alloc(ps, PATHSPEC_DATATYPE_DIFF);
GIT_ERROR_CHECK_ALLOC(m);
}
pathspec_match_context_init(
&ctxt, (flags & GIT_PATHSPEC_NO_GLOB) != 0,
git_diff_is_sorted_icase(diff));
git_vector_foreach(&diff->deltas, i, delta) {
/* search for match with delta */
int result = git_pathspec__match_at(
&pos, patterns, &ctxt, delta->old_file.path, delta->new_file.path);
/* no matches for this path */
if (result < 0)
continue;
/* mark the matched pattern as used */
used_ct += pathspec_mark_pattern(&used_patterns, pos);
/* if result was a negative pattern match, then don't list file */
if (!result)
continue;
++found_deltas;
/* if find_failures is on, check if any later patterns also match */
if (find_failures && used_ct < patterns->length)
used_ct += pathspec_mark_remaining(
&used_patterns, patterns, &ctxt, pos + 1,
delta->old_file.path, delta->new_file.path);
/* if only looking at failures, exit early or just continue */
if (failures_only || !out) {
if (used_ct == patterns->length)
break;
continue;
}
/* insert matched delta into matches array */
if (!(match = (const git_diff_delta **)git_array_alloc(m->matches))) {
error = -1;
goto done;
} else {
*match = delta;
}
}
/* insert patterns that had no matches into failures array */
if (find_failures && used_ct < patterns->length &&
(error = pathspec_build_failure_array(
&m->failures, patterns, &used_patterns, &m->pool)) < 0)
goto done;
/* if every pattern failed to match, then we have failed */
if ((flags & GIT_PATHSPEC_NO_MATCH_ERROR) != 0 && !found_deltas) {
git_error_set(GIT_ERROR_INVALID, "no matching deltas were found");
error = GIT_ENOTFOUND;
}
done:
git_bitvec_free(&used_patterns);
if (error < 0) {
pathspec_match_free(m);
if (out) *out = NULL;
}
return error;
}
void git_pathspec_match_list_free(git_pathspec_match_list *m)
{
if (m)
pathspec_match_free(m);
}
size_t git_pathspec_match_list_entrycount(
const git_pathspec_match_list *m)
{
return m ? git_array_size(m->matches) : 0;
}
const char *git_pathspec_match_list_entry(
const git_pathspec_match_list *m, size_t pos)
{
if (!m || m->datatype != PATHSPEC_DATATYPE_STRINGS ||
!git_array_valid_index(m->matches, pos))
return NULL;
return *((const char **)git_array_get(m->matches, pos));
}
const git_diff_delta *git_pathspec_match_list_diff_entry(
const git_pathspec_match_list *m, size_t pos)
{
if (!m || m->datatype != PATHSPEC_DATATYPE_DIFF ||
!git_array_valid_index(m->matches, pos))
return NULL;
return *((const git_diff_delta **)git_array_get(m->matches, pos));
}
size_t git_pathspec_match_list_failed_entrycount(
const git_pathspec_match_list *m)
{
return m ? git_array_size(m->failures) : 0;
}
const char * git_pathspec_match_list_failed_entry(
const git_pathspec_match_list *m, size_t pos)
{
char **entry = m ? git_array_get(m->failures, pos) : NULL;
return entry ? *entry : NULL;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/wildmatch.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_wildmatch_h__
#define INCLUDE_wildmatch_h__
#include "common.h"
#define WM_CASEFOLD 1
#define WM_PATHNAME 2
#define WM_NOMATCH 1
#define WM_MATCH 0
#define WM_ABORT_ALL -1
#define WM_ABORT_TO_STARSTAR -2
int wildmatch(const char *pattern, const char *text, unsigned int flags);
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/midx.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_midx_h__
#define INCLUDE_midx_h__
#include "common.h"
#include <ctype.h>
#include "git2/sys/midx.h"
#include "map.h"
#include "mwindow.h"
#include "odb.h"
/*
* A multi-pack-index file.
*
* This file contains a merged index for multiple independent .pack files. This
* can help speed up locating objects without requiring a garbage collection
* cycle to create a single .pack file.
*
* Support for this feature was added in git 2.21, and requires the
* `core.multiPackIndex` config option to be set.
*/
typedef struct git_midx_file {
git_map index_map;
/* The table of Packfile Names. */
git_vector packfile_names;
/* The OID Fanout table. */
const uint32_t *oid_fanout;
/* The total number of objects in the index. */
uint32_t num_objects;
/* The OID Lookup table. */
git_oid *oid_lookup;
/* The Object Offsets table. Each entry has two 4-byte fields with the pack index and the offset. */
const unsigned char *object_offsets;
/* The Object Large Offsets table. */
const unsigned char *object_large_offsets;
/* The number of entries in the Object Large Offsets table. Each entry has an 8-byte with an offset */
size_t num_object_large_offsets;
/* The trailer of the file. Contains the SHA1-checksum of the whole file. */
git_oid checksum;
/* something like ".git/objects/pack/multi-pack-index". */
git_buf filename;
} git_midx_file;
/*
* An entry in the multi-pack-index file. Similar in purpose to git_pack_entry.
*/
typedef struct git_midx_entry {
/* The index within idx->packfile_names where the packfile name can be found. */
size_t pack_index;
/* The offset within the .pack file where the requested object is found. */
off64_t offset;
/* The SHA-1 hash of the requested object. */
git_oid sha1;
} git_midx_entry;
/*
* A writer for `multi-pack-index` files.
*/
struct git_midx_writer {
/*
* The path of the directory where the .pack/.idx files are stored. The
* `multi-pack-index` file will be written to the same directory.
*/
git_buf pack_dir;
/* The list of `git_pack_file`s. */
git_vector packs;
};
int git_midx_open(
git_midx_file **idx_out,
const char *path);
bool git_midx_needs_refresh(
const git_midx_file *idx,
const char *path);
int git_midx_entry_find(
git_midx_entry *e,
git_midx_file *idx,
const git_oid *short_oid,
size_t len);
int git_midx_foreach_entry(
git_midx_file *idx,
git_odb_foreach_cb cb,
void *data);
int git_midx_close(git_midx_file *idx);
void git_midx_free(git_midx_file *idx);
/* This is exposed for use in the fuzzers. */
int git_midx_parse(
git_midx_file *idx,
const unsigned char *data,
size_t size);
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/transport.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "git2/types.h"
#include "git2/remote.h"
#include "git2/net.h"
#include "git2/transport.h"
#include "git2/sys/transport.h"
#include "path.h"
typedef struct transport_definition {
char *prefix;
git_transport_cb fn;
void *param;
} transport_definition;
static git_smart_subtransport_definition http_subtransport_definition = { git_smart_subtransport_http, 1, NULL };
static git_smart_subtransport_definition git_subtransport_definition = { git_smart_subtransport_git, 0, NULL };
#ifdef GIT_SSH
static git_smart_subtransport_definition ssh_subtransport_definition = { git_smart_subtransport_ssh, 0, NULL };
#endif
static transport_definition local_transport_definition = { "file://", git_transport_local, NULL };
static transport_definition transports[] = {
{ "git://", git_transport_smart, &git_subtransport_definition },
{ "http://", git_transport_smart, &http_subtransport_definition },
{ "https://", git_transport_smart, &http_subtransport_definition },
{ "file://", git_transport_local, NULL },
#ifdef GIT_SSH
{ "ssh://", git_transport_smart, &ssh_subtransport_definition },
{ "ssh+git://", git_transport_smart, &ssh_subtransport_definition },
{ "git+ssh://", git_transport_smart, &ssh_subtransport_definition },
#endif
{ NULL, 0, 0 }
};
static git_vector custom_transports = GIT_VECTOR_INIT;
#define GIT_TRANSPORT_COUNT (sizeof(transports)/sizeof(transports[0])) - 1
static transport_definition * transport_find_by_url(const char *url)
{
size_t i = 0;
transport_definition *d;
/* Find a user transport who wants to deal with this URI */
git_vector_foreach(&custom_transports, i, d) {
if (strncasecmp(url, d->prefix, strlen(d->prefix)) == 0) {
return d;
}
}
/* Find a system transport for this URI */
for (i = 0; i < GIT_TRANSPORT_COUNT; ++i) {
d = &transports[i];
if (strncasecmp(url, d->prefix, strlen(d->prefix)) == 0) {
return d;
}
}
return NULL;
}
static int transport_find_fn(
git_transport_cb *out,
const char *url,
void **param)
{
transport_definition *definition = transport_find_by_url(url);
#ifdef GIT_WIN32
/* On Windows, it might not be possible to discern between absolute local
* and ssh paths - first check if this is a valid local path that points
* to a directory and if so assume local path, else assume SSH */
/* Check to see if the path points to a file on the local file system */
if (!definition && git_path_exists(url) && git_path_isdir(url))
definition = &local_transport_definition;
#endif
/* For other systems, perform the SSH check first, to avoid going to the
* filesystem if it is not necessary */
/* It could be a SSH remote path. Check to see if there's a : */
if (!definition && strrchr(url, ':')) {
/* re-search transports again with ssh:// as url
* so that we can find a third party ssh transport */
definition = transport_find_by_url("ssh://");
}
#ifndef GIT_WIN32
/* Check to see if the path points to a file on the local file system */
if (!definition && git_path_exists(url) && git_path_isdir(url))
definition = &local_transport_definition;
#endif
if (!definition)
return GIT_ENOTFOUND;
*out = definition->fn;
*param = definition->param;
return 0;
}
/**************
* Public API *
**************/
int git_transport_new(git_transport **out, git_remote *owner, const char *url)
{
git_transport_cb fn;
git_transport *transport;
void *param;
int error;
if ((error = transport_find_fn(&fn, url, ¶m)) == GIT_ENOTFOUND) {
git_error_set(GIT_ERROR_NET, "unsupported URL protocol");
return -1;
} else if (error < 0)
return error;
if ((error = fn(&transport, owner, param)) < 0)
return error;
GIT_ERROR_CHECK_VERSION(transport, GIT_TRANSPORT_VERSION, "git_transport");
*out = transport;
return 0;
}
int git_transport_register(
const char *scheme,
git_transport_cb cb,
void *param)
{
git_buf prefix = GIT_BUF_INIT;
transport_definition *d, *definition = NULL;
size_t i;
int error = 0;
GIT_ASSERT_ARG(scheme);
GIT_ASSERT_ARG(cb);
if ((error = git_buf_printf(&prefix, "%s://", scheme)) < 0)
goto on_error;
git_vector_foreach(&custom_transports, i, d) {
if (strcasecmp(d->prefix, prefix.ptr) == 0) {
error = GIT_EEXISTS;
goto on_error;
}
}
definition = git__calloc(1, sizeof(transport_definition));
GIT_ERROR_CHECK_ALLOC(definition);
definition->prefix = git_buf_detach(&prefix);
definition->fn = cb;
definition->param = param;
if (git_vector_insert(&custom_transports, definition) < 0)
goto on_error;
return 0;
on_error:
git_buf_dispose(&prefix);
git__free(definition);
return error;
}
int git_transport_unregister(const char *scheme)
{
git_buf prefix = GIT_BUF_INIT;
transport_definition *d;
size_t i;
int error = 0;
GIT_ASSERT_ARG(scheme);
if ((error = git_buf_printf(&prefix, "%s://", scheme)) < 0)
goto done;
git_vector_foreach(&custom_transports, i, d) {
if (strcasecmp(d->prefix, prefix.ptr) == 0) {
if ((error = git_vector_remove(&custom_transports, i)) < 0)
goto done;
git__free(d->prefix);
git__free(d);
if (!custom_transports.length)
git_vector_free(&custom_transports);
error = 0;
goto done;
}
}
error = GIT_ENOTFOUND;
done:
git_buf_dispose(&prefix);
return error;
}
int git_transport_init(git_transport *opts, unsigned int version)
{
GIT_INIT_STRUCTURE_FROM_TEMPLATE(
opts, version, git_transport, GIT_TRANSPORT_INIT);
return 0;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/cc-compat.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_cc_compat_h__
#define INCLUDE_cc_compat_h__
#include <stdarg.h>
/*
* See if our compiler is known to support flexible array members.
*/
#ifndef GIT_FLEX_ARRAY
# if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
# define GIT_FLEX_ARRAY /* empty */
# elif defined(__GNUC__)
# if (__GNUC__ >= 3)
# define GIT_FLEX_ARRAY /* empty */
# else
# define GIT_FLEX_ARRAY 0 /* older GNU extension */
# endif
# endif
/* Default to safer but a bit wasteful traditional style */
# ifndef GIT_FLEX_ARRAY
# define GIT_FLEX_ARRAY 1
# endif
#endif
#if defined(__GNUC__)
# define GIT_ALIGN(x,size) x __attribute__ ((aligned(size)))
#elif defined(_MSC_VER)
# define GIT_ALIGN(x,size) __declspec(align(size)) x
#else
# define GIT_ALIGN(x,size) x
#endif
#if defined(__GNUC__)
# define GIT_UNUSED(x) \
do { \
__typeof__(x) _unused __attribute__((unused)); \
_unused = (x); \
} while (0)
#else
# define GIT_UNUSED(x) ((void)(x))
#endif
/* Define the printf format specifier to use for size_t output */
#if defined(_MSC_VER) || defined(__MINGW32__)
/* Visual Studio 2012 and prior lack PRId64 entirely */
# ifndef PRId64
# define PRId64 "I64d"
# endif
/* The first block is needed to avoid warnings on MingW amd64 */
# if (SIZE_MAX == ULLONG_MAX)
# define PRIuZ "I64u"
# define PRIxZ "I64x"
# define PRIXZ "I64X"
# define PRIdZ "I64d"
# else
# define PRIuZ "Iu"
# define PRIxZ "Ix"
# define PRIXZ "IX"
# define PRIdZ "Id"
# endif
#else
# define PRIuZ "zu"
# define PRIxZ "zx"
# define PRIXZ "zX"
# define PRIdZ "zd"
#endif
/* Micosoft Visual C/C++ */
#if defined(_MSC_VER)
/* disable "deprecated function" warnings */
# pragma warning ( disable : 4996 )
/* disable "conditional expression is constant" level 4 warnings */
# pragma warning ( disable : 4127 )
#endif
#if defined (_MSC_VER)
typedef unsigned char bool;
# ifndef true
# define true 1
# endif
# ifndef false
# define false 0
# endif
#else
# include <stdbool.h>
#endif
#ifndef va_copy
# ifdef __va_copy
# define va_copy(dst, src) __va_copy(dst, src)
# else
# define va_copy(dst, src) ((dst) = (src))
# endif
#endif
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/graph.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "revwalk.h"
#include "merge.h"
#include "git2/graph.h"
static int interesting(git_pqueue *list, git_commit_list *roots)
{
unsigned int i;
for (i = 0; i < git_pqueue_size(list); i++) {
git_commit_list_node *commit = git_pqueue_get(list, i);
if ((commit->flags & STALE) == 0)
return 1;
}
while(roots) {
if ((roots->item->flags & STALE) == 0)
return 1;
roots = roots->next;
}
return 0;
}
static int mark_parents(git_revwalk *walk, git_commit_list_node *one,
git_commit_list_node *two)
{
unsigned int i;
git_commit_list *roots = NULL;
git_pqueue list;
/* if the commit is repeated, we have a our merge base already */
if (one == two) {
one->flags |= PARENT1 | PARENT2 | RESULT;
return 0;
}
if (git_pqueue_init(&list, 0, 2, git_commit_list_generation_cmp) < 0)
return -1;
if (git_commit_list_parse(walk, one) < 0)
goto on_error;
one->flags |= PARENT1;
if (git_pqueue_insert(&list, one) < 0)
goto on_error;
if (git_commit_list_parse(walk, two) < 0)
goto on_error;
two->flags |= PARENT2;
if (git_pqueue_insert(&list, two) < 0)
goto on_error;
/* as long as there are non-STALE commits */
while (interesting(&list, roots)) {
git_commit_list_node *commit = git_pqueue_pop(&list);
unsigned int flags;
if (commit == NULL)
break;
flags = commit->flags & (PARENT1 | PARENT2 | STALE);
if (flags == (PARENT1 | PARENT2)) {
if (!(commit->flags & RESULT))
commit->flags |= RESULT;
/* we mark the parents of a merge stale */
flags |= STALE;
}
for (i = 0; i < commit->out_degree; i++) {
git_commit_list_node *p = commit->parents[i];
if ((p->flags & flags) == flags)
continue;
if (git_commit_list_parse(walk, p) < 0)
goto on_error;
p->flags |= flags;
if (git_pqueue_insert(&list, p) < 0)
goto on_error;
}
/* Keep track of root commits, to make sure the path gets marked */
if (commit->out_degree == 0) {
if (git_commit_list_insert(commit, &roots) == NULL)
goto on_error;
}
}
git_commit_list_free(&roots);
git_pqueue_free(&list);
return 0;
on_error:
git_commit_list_free(&roots);
git_pqueue_free(&list);
return -1;
}
static int ahead_behind(git_commit_list_node *one, git_commit_list_node *two,
size_t *ahead, size_t *behind)
{
git_commit_list_node *commit;
git_pqueue pq;
int error = 0, i;
*ahead = 0;
*behind = 0;
if (git_pqueue_init(&pq, 0, 2, git_commit_list_time_cmp) < 0)
return -1;
if ((error = git_pqueue_insert(&pq, one)) < 0 ||
(error = git_pqueue_insert(&pq, two)) < 0)
goto done;
while ((commit = git_pqueue_pop(&pq)) != NULL) {
if (commit->flags & RESULT ||
(commit->flags & (PARENT1 | PARENT2)) == (PARENT1 | PARENT2))
continue;
else if (commit->flags & PARENT1)
(*ahead)++;
else if (commit->flags & PARENT2)
(*behind)++;
for (i = 0; i < commit->out_degree; i++) {
git_commit_list_node *p = commit->parents[i];
if ((error = git_pqueue_insert(&pq, p)) < 0)
goto done;
}
commit->flags |= RESULT;
}
done:
git_pqueue_free(&pq);
return error;
}
int git_graph_ahead_behind(size_t *ahead, size_t *behind, git_repository *repo,
const git_oid *local, const git_oid *upstream)
{
git_revwalk *walk;
git_commit_list_node *commit_u, *commit_l;
if (git_revwalk_new(&walk, repo) < 0)
return -1;
commit_u = git_revwalk__commit_lookup(walk, upstream);
if (commit_u == NULL)
goto on_error;
commit_l = git_revwalk__commit_lookup(walk, local);
if (commit_l == NULL)
goto on_error;
if (mark_parents(walk, commit_l, commit_u) < 0)
goto on_error;
if (ahead_behind(commit_l, commit_u, ahead, behind) < 0)
goto on_error;
git_revwalk_free(walk);
return 0;
on_error:
git_revwalk_free(walk);
return -1;
}
int git_graph_descendant_of(git_repository *repo, const git_oid *commit, const git_oid *ancestor)
{
if (git_oid_equal(commit, ancestor))
return 0;
return git_graph_reachable_from_any(repo, ancestor, commit, 1);
}
int git_graph_reachable_from_any(
git_repository *repo,
const git_oid *commit_id,
const git_oid descendant_array[],
size_t length)
{
git_revwalk *walk = NULL;
git_vector list;
git_commit_list *result = NULL;
git_commit_list_node *commit;
size_t i;
uint32_t minimum_generation = 0xffffffff;
int error = 0;
if (!length)
return 0;
for (i = 0; i < length; ++i) {
if (git_oid_equal(commit_id, &descendant_array[i]))
return 1;
}
if ((error = git_vector_init(&list, length + 1, NULL)) < 0)
return error;
if ((error = git_revwalk_new(&walk, repo)) < 0)
goto done;
for (i = 0; i < length; i++) {
commit = git_revwalk__commit_lookup(walk, &descendant_array[i]);
if (commit == NULL) {
error = -1;
goto done;
}
git_vector_insert(&list, commit);
if (minimum_generation > commit->generation)
minimum_generation = commit->generation;
}
commit = git_revwalk__commit_lookup(walk, commit_id);
if (commit == NULL) {
error = -1;
goto done;
}
if (minimum_generation > commit->generation)
minimum_generation = commit->generation;
if ((error = git_merge__bases_many(&result, walk, commit, &list, minimum_generation)) < 0)
goto done;
if (result) {
error = git_oid_equal(commit_id, &result->item->oid);
} else {
/* No merge-base found, it's not a descendant */
error = 0;
}
done:
git_commit_list_free(&result);
git_vector_free(&list);
git_revwalk_free(walk);
return error;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/offmap.h
|
/*
* Copyright (C) 2012 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_offmap_h__
#define INCLUDE_offmap_h__
#include "common.h"
#include "git2/types.h"
/** A map with `off64_t`s as key. */
typedef struct kh_off_s git_offmap;
/**
* Allocate a new `off64_t` map.
*
* @param out Pointer to the map that shall be allocated.
* @return 0 on success, an error code if allocation has failed.
*/
int git_offmap_new(git_offmap **out);
/**
* Free memory associated with the map.
*
* Note that this function will _not_ free values added to this
* map.
*
* @param map Pointer to the map that is to be free'd. May be
* `NULL`.
*/
void git_offmap_free(git_offmap *map);
/**
* Clear all entries from the map.
*
* This function will remove all entries from the associated map.
* Memory associated with it will not be released, though.
*
* @param map Pointer to the map that shall be cleared. May be
* `NULL`.
*/
void git_offmap_clear(git_offmap *map);
/**
* Return the number of elements in the map.
*
* @parameter map map containing the elements
* @return number of elements in the map
*/
size_t git_offmap_size(git_offmap *map);
/**
* Return value associated with the given key.
*
* @param map map to search key in
* @param key key to search for
* @return value associated with the given key or NULL if the key was not found
*/
void *git_offmap_get(git_offmap *map, const off64_t key);
/**
* Set the entry for key to value.
*
* If the map has no corresponding entry for the given key, a new
* entry will be created with the given value. If an entry exists
* already, its value will be updated to match the given value.
*
* @param map map to create new entry in
* @param key key to set
* @param value value to associate the key with; may be NULL
* @return zero if the key was successfully set, a negative error
* code otherwise
*/
int git_offmap_set(git_offmap *map, const off64_t key, void *value);
/**
* Delete an entry from the map.
*
* Delete the given key and its value from the map. If no such
* key exists, this will do nothing.
*
* @param map map to delete key in
* @param key key to delete
* @return `0` if the key has been deleted, GIT_ENOTFOUND if no
* such key was found, a negative code in case of an
* error
*/
int git_offmap_delete(git_offmap *map, const off64_t key);
/**
* Check whether a key exists in the given map.
*
* @param map map to query for the key
* @param key key to search for
* @return 0 if the key has not been found, 1 otherwise
*/
int git_offmap_exists(git_offmap *map, const off64_t key);
/**
* Iterate over entries of the map.
*
* This functions allows to iterate over all key-value entries of
* the map. The current position is stored in the `iter` variable
* and should be initialized to `0` before the first call to this
* function.
*
* @param map map to iterate over
* @param value pointer to the variable where to store the current
* value. May be NULL.
* @param iter iterator storing the current position. Initialize
* with zero previous to the first call.
* @param key pointer to the variable where to store the current
* key. May be NULL.
* @return `0` if the next entry was correctly retrieved.
* GIT_ITEROVER if no entries are left. A negative error
* code otherwise.
*/
int git_offmap_iterate(void **value, git_offmap *map, size_t *iter, off64_t *key);
#define git_offmap_foreach(h, kvar, vvar, code) { size_t __i = 0; \
while (git_offmap_iterate((void **) &(vvar), h, &__i, &(kvar)) == 0) { \
code; \
} }
#define git_offmap_foreach_value(h, vvar, code) { size_t __i = 0; \
while (git_offmap_iterate((void **) &(vvar), h, &__i, NULL) == 0) { \
code; \
} }
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/features.h.in
|
#ifndef INCLUDE_features_h__
#define INCLUDE_features_h__
#cmakedefine GIT_DEBUG_POOL 1
#cmakedefine GIT_DEBUG_STRICT_ALLOC 1
#cmakedefine GIT_DEBUG_STRICT_OPEN 1
#cmakedefine GIT_TRACE 1
#cmakedefine GIT_THREADS 1
#cmakedefine GIT_WIN32_LEAKCHECK 1
#cmakedefine GIT_ARCH_64 1
#cmakedefine GIT_ARCH_32 1
#cmakedefine GIT_USE_ICONV 1
#cmakedefine GIT_USE_NSEC 1
#cmakedefine GIT_USE_STAT_MTIM 1
#cmakedefine GIT_USE_STAT_MTIMESPEC 1
#cmakedefine GIT_USE_STAT_MTIME_NSEC 1
#cmakedefine GIT_USE_FUTIMENS 1
#cmakedefine GIT_REGEX_REGCOMP_L
#cmakedefine GIT_REGEX_REGCOMP
#cmakedefine GIT_REGEX_PCRE
#cmakedefine GIT_REGEX_PCRE2
#cmakedefine GIT_REGEX_BUILTIN 1
#cmakedefine GIT_SSH 1
#cmakedefine GIT_SSH_MEMORY_CREDENTIALS 1
#cmakedefine GIT_NTLM 1
#cmakedefine GIT_GSSAPI 1
#cmakedefine GIT_GSSFRAMEWORK 1
#cmakedefine GIT_WINHTTP 1
#cmakedefine GIT_HTTPS 1
#cmakedefine GIT_OPENSSL 1
#cmakedefine GIT_OPENSSL_DYNAMIC 1
#cmakedefine GIT_SECURE_TRANSPORT 1
#cmakedefine GIT_MBEDTLS 1
#cmakedefine GIT_SHA1_COLLISIONDETECT 1
#cmakedefine GIT_SHA1_WIN32 1
#cmakedefine GIT_SHA1_COMMON_CRYPTO 1
#cmakedefine GIT_SHA1_OPENSSL 1
#cmakedefine GIT_SHA1_MBEDTLS 1
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/fetch.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_fetch_h__
#define INCLUDE_fetch_h__
#include "common.h"
#include "git2/remote.h"
#include "netops.h"
int git_fetch_negotiate(git_remote *remote, const git_fetch_options *opts);
int git_fetch_download_pack(git_remote *remote, const git_remote_callbacks *callbacks);
int git_fetch_setup_walk(git_revwalk **out, git_repository *repo);
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/strnlen.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_strlen_h__
#define INCLUDE_strlen_h__
#if defined(__MINGW32__) || defined(__sun) || defined(__APPLE__) || defined(__MidnightBSD__) ||\
(defined(_MSC_VER) && _MSC_VER < 1500)
# define NO_STRNLEN
#endif
#ifdef NO_STRNLEN
GIT_INLINE(size_t) p_strnlen(const char *s, size_t maxlen) {
const char *end = memchr(s, 0, maxlen);
return end ? (size_t)(end - s) : maxlen;
}
#else
# define p_strnlen strnlen
#endif
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/submodule.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "submodule.h"
#include "git2/config.h"
#include "git2/sys/config.h"
#include "git2/types.h"
#include "git2/index.h"
#include "buffer.h"
#include "vector.h"
#include "posix.h"
#include "config_backend.h"
#include "config.h"
#include "repository.h"
#include "tree.h"
#include "iterator.h"
#include "path.h"
#include "index.h"
#include "worktree.h"
#include "clone.h"
#define GIT_MODULES_FILE ".gitmodules"
static git_configmap _sm_update_map[] = {
{GIT_CONFIGMAP_STRING, "checkout", GIT_SUBMODULE_UPDATE_CHECKOUT},
{GIT_CONFIGMAP_STRING, "rebase", GIT_SUBMODULE_UPDATE_REBASE},
{GIT_CONFIGMAP_STRING, "merge", GIT_SUBMODULE_UPDATE_MERGE},
{GIT_CONFIGMAP_STRING, "none", GIT_SUBMODULE_UPDATE_NONE},
{GIT_CONFIGMAP_FALSE, NULL, GIT_SUBMODULE_UPDATE_NONE},
{GIT_CONFIGMAP_TRUE, NULL, GIT_SUBMODULE_UPDATE_CHECKOUT},
};
static git_configmap _sm_ignore_map[] = {
{GIT_CONFIGMAP_STRING, "none", GIT_SUBMODULE_IGNORE_NONE},
{GIT_CONFIGMAP_STRING, "untracked", GIT_SUBMODULE_IGNORE_UNTRACKED},
{GIT_CONFIGMAP_STRING, "dirty", GIT_SUBMODULE_IGNORE_DIRTY},
{GIT_CONFIGMAP_STRING, "all", GIT_SUBMODULE_IGNORE_ALL},
{GIT_CONFIGMAP_FALSE, NULL, GIT_SUBMODULE_IGNORE_NONE},
{GIT_CONFIGMAP_TRUE, NULL, GIT_SUBMODULE_IGNORE_ALL},
};
static git_configmap _sm_recurse_map[] = {
{GIT_CONFIGMAP_STRING, "on-demand", GIT_SUBMODULE_RECURSE_ONDEMAND},
{GIT_CONFIGMAP_FALSE, NULL, GIT_SUBMODULE_RECURSE_NO},
{GIT_CONFIGMAP_TRUE, NULL, GIT_SUBMODULE_RECURSE_YES},
};
enum {
CACHE_OK = 0,
CACHE_REFRESH = 1,
CACHE_FLUSH = 2
};
enum {
GITMODULES_EXISTING = 0,
GITMODULES_CREATE = 1,
};
static int submodule_alloc(git_submodule **out, git_repository *repo, const char *name);
static git_config_backend *open_gitmodules(git_repository *repo, int gitmod);
static int gitmodules_snapshot(git_config **snap, git_repository *repo);
static int get_url_base(git_buf *url, git_repository *repo);
static int lookup_head_remote_key(git_buf *remote_key, git_repository *repo);
static int lookup_default_remote(git_remote **remote, git_repository *repo);
static int submodule_load_each(const git_config_entry *entry, void *payload);
static int submodule_read_config(git_submodule *sm, git_config *cfg);
static int submodule_load_from_wd_lite(git_submodule *);
static void submodule_get_index_status(unsigned int *, git_submodule *);
static void submodule_get_wd_status(unsigned int *, git_submodule *, git_repository *, git_submodule_ignore_t);
static void submodule_update_from_index_entry(git_submodule *sm, const git_index_entry *ie);
static void submodule_update_from_head_data(git_submodule *sm, mode_t mode, const git_oid *id);
static int submodule_cmp(const void *a, const void *b)
{
return strcmp(((git_submodule *)a)->name, ((git_submodule *)b)->name);
}
static int submodule_config_key_trunc_puts(git_buf *key, const char *suffix)
{
ssize_t idx = git_buf_rfind(key, '.');
git_buf_truncate(key, (size_t)(idx + 1));
return git_buf_puts(key, suffix);
}
/*
* PUBLIC APIS
*/
static void submodule_set_lookup_error(int error, const char *name)
{
if (!error)
return;
git_error_set(GIT_ERROR_SUBMODULE, (error == GIT_ENOTFOUND) ?
"no submodule named '%s'" :
"submodule '%s' has not been added yet", name);
}
typedef struct {
const char *path;
char *name;
} fbp_data;
static int find_by_path(const git_config_entry *entry, void *payload)
{
fbp_data *data = payload;
if (!strcmp(entry->value, data->path)) {
const char *fdot, *ldot;
fdot = strchr(entry->name, '.');
ldot = strrchr(entry->name, '.');
data->name = git__strndup(fdot + 1, ldot - fdot - 1);
GIT_ERROR_CHECK_ALLOC(data->name);
}
return 0;
}
/*
* Checks to see if the submodule shares its name with a file or directory that
* already exists on the index. If so, the submodule cannot be added.
*/
static int is_path_occupied(bool *occupied, git_repository *repo, const char *path)
{
int error = 0;
git_index *index;
git_buf dir = GIT_BUF_INIT;
*occupied = false;
if ((error = git_repository_index__weakptr(&index, repo)) < 0)
goto out;
if ((error = git_index_find(NULL, index, path)) != GIT_ENOTFOUND) {
if (!error) {
git_error_set(GIT_ERROR_SUBMODULE,
"File '%s' already exists in the index", path);
*occupied = true;
}
goto out;
}
if ((error = git_buf_sets(&dir, path)) < 0)
goto out;
if ((error = git_path_to_dir(&dir)) < 0)
goto out;
if ((error = git_index_find_prefix(NULL, index, dir.ptr)) != GIT_ENOTFOUND) {
if (!error) {
git_error_set(GIT_ERROR_SUBMODULE,
"Directory '%s' already exists in the index", path);
*occupied = true;
}
goto out;
}
error = 0;
out:
git_buf_dispose(&dir);
return error;
}
/**
* Release the name map returned by 'load_submodule_names'.
*/
static void free_submodule_names(git_strmap *names)
{
const char *key;
char *value;
if (names == NULL)
return;
git_strmap_foreach(names, key, value, {
git__free((char *) key);
git__free(value);
});
git_strmap_free(names);
return;
}
/**
* Map submodule paths to names.
* TODO: for some use-cases, this might need case-folding on a
* case-insensitive filesystem
*/
static int load_submodule_names(git_strmap **out, git_repository *repo, git_config *cfg)
{
const char *key = "submodule\\..*\\.path";
git_config_iterator *iter = NULL;
git_config_entry *entry;
git_buf buf = GIT_BUF_INIT;
git_strmap *names;
int isvalid, error;
*out = NULL;
if ((error = git_strmap_new(&names)) < 0)
goto out;
if ((error = git_config_iterator_glob_new(&iter, cfg, key)) < 0)
goto out;
while ((error = git_config_next(&entry, iter)) == 0) {
const char *fdot, *ldot;
fdot = strchr(entry->name, '.');
ldot = strrchr(entry->name, '.');
if (git_strmap_exists(names, entry->value)) {
git_error_set(GIT_ERROR_SUBMODULE,
"duplicated submodule path '%s'", entry->value);
error = -1;
goto out;
}
git_buf_clear(&buf);
git_buf_put(&buf, fdot + 1, ldot - fdot - 1);
isvalid = git_submodule_name_is_valid(repo, buf.ptr, 0);
if (isvalid < 0) {
error = isvalid;
goto out;
}
if (!isvalid)
continue;
if ((error = git_strmap_set(names, git__strdup(entry->value), git_buf_detach(&buf))) < 0) {
git_error_set(GIT_ERROR_NOMEMORY, "error inserting submodule into hash table");
error = -1;
goto out;
}
}
if (error == GIT_ITEROVER)
error = 0;
*out = names;
names = NULL;
out:
free_submodule_names(names);
git_buf_dispose(&buf);
git_config_iterator_free(iter);
return error;
}
int git_submodule_cache_init(git_strmap **out, git_repository *repo)
{
int error = 0;
git_strmap *cache = NULL;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(repo);
if ((error = git_strmap_new(&cache)) < 0)
return error;
if ((error = git_submodule__map(repo, cache)) < 0) {
git_submodule_cache_free(cache);
return error;
}
*out = cache;
return error;
}
int git_submodule_cache_free(git_strmap *cache)
{
git_submodule *sm = NULL;
if (cache == NULL)
return 0;
git_strmap_foreach_value(cache, sm, {
git_submodule_free(sm);
});
git_strmap_free(cache);
return 0;
}
int git_submodule_lookup(
git_submodule **out, /* NULL if user only wants to test existence */
git_repository *repo,
const char *name) /* trailing slash is allowed */
{
return git_submodule__lookup_with_cache(out, repo, name, repo->submodule_cache);
}
int git_submodule__lookup_with_cache(
git_submodule **out, /* NULL if user only wants to test existence */
git_repository *repo,
const char *name, /* trailing slash is allowed */
git_strmap *cache)
{
int error;
unsigned int location;
git_submodule *sm;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
if (repo->is_bare) {
git_error_set(GIT_ERROR_SUBMODULE, "cannot get submodules without a working tree");
return -1;
}
if (cache != NULL) {
if ((sm = git_strmap_get(cache, name)) != NULL) {
if (out) {
*out = sm;
GIT_REFCOUNT_INC(*out);
}
return 0;
}
}
if ((error = submodule_alloc(&sm, repo, name)) < 0)
return error;
if ((error = git_submodule_reload(sm, false)) < 0) {
git_submodule_free(sm);
return error;
}
if ((error = git_submodule_location(&location, sm)) < 0) {
git_submodule_free(sm);
return error;
}
/* If it's not configured or we're looking by path */
if (location == 0 || location == GIT_SUBMODULE_STATUS_IN_WD) {
git_config_backend *mods;
const char *pattern = "submodule\\..*\\.path";
git_buf path = GIT_BUF_INIT;
fbp_data data = { NULL, NULL };
git_buf_puts(&path, name);
while (path.ptr[path.size-1] == '/') {
path.ptr[--path.size] = '\0';
}
data.path = path.ptr;
mods = open_gitmodules(repo, GITMODULES_EXISTING);
if (mods)
error = git_config_backend_foreach_match(mods, pattern, find_by_path, &data);
git_config_backend_free(mods);
if (error < 0) {
git_submodule_free(sm);
git_buf_dispose(&path);
return error;
}
if (data.name) {
git__free(sm->name);
sm->name = data.name;
sm->path = git_buf_detach(&path);
/* Try to load again with the right name */
if ((error = git_submodule_reload(sm, false)) < 0) {
git_submodule_free(sm);
return error;
}
}
git_buf_dispose(&path);
}
if ((error = git_submodule_location(&location, sm)) < 0) {
git_submodule_free(sm);
return error;
}
/* If we still haven't found it, do the WD check */
if (location == 0 || location == GIT_SUBMODULE_STATUS_IN_WD) {
git_submodule_free(sm);
error = GIT_ENOTFOUND;
/* If it's not configured, we still check if there's a repo at the path */
if (git_repository_workdir(repo)) {
git_buf path = GIT_BUF_INIT;
if (git_buf_join3(&path, '/',
git_repository_workdir(repo),
name, DOT_GIT) < 0 ||
git_path_validate_workdir_buf(NULL, &path) < 0)
return -1;
if (git_path_exists(path.ptr))
error = GIT_EEXISTS;
git_buf_dispose(&path);
}
submodule_set_lookup_error(error, name);
return error;
}
if (out)
*out = sm;
else
git_submodule_free(sm);
return 0;
}
int git_submodule_name_is_valid(git_repository *repo, const char *name, int flags)
{
git_buf buf = GIT_BUF_INIT;
int error, isvalid;
if (flags == 0)
flags = GIT_PATH_REJECT_FILESYSTEM_DEFAULTS;
/* Avoid allocating a new string if we can avoid it */
if (strchr(name, '\\') != NULL) {
if ((error = git_path_normalize_slashes(&buf, name)) < 0)
return error;
} else {
git_buf_attach_notowned(&buf, name, strlen(name));
}
isvalid = git_path_validate(repo, buf.ptr, 0, flags);
git_buf_dispose(&buf);
return isvalid;
}
static void submodule_free_dup(void *sm)
{
git_submodule_free(sm);
}
static int submodule_get_or_create(git_submodule **out, git_repository *repo, git_strmap *map, const char *name)
{
git_submodule *sm = NULL;
int error;
if ((sm = git_strmap_get(map, name)) != NULL)
goto done;
/* if the submodule doesn't exist yet in the map, create it */
if ((error = submodule_alloc(&sm, repo, name)) < 0)
return error;
if ((error = git_strmap_set(map, sm->name, sm)) < 0) {
git_submodule_free(sm);
return error;
}
done:
GIT_REFCOUNT_INC(sm);
*out = sm;
return 0;
}
static int submodules_from_index(git_strmap *map, git_index *idx, git_config *cfg)
{
int error;
git_iterator *i = NULL;
const git_index_entry *entry;
git_strmap *names;
if ((error = load_submodule_names(&names, git_index_owner(idx), cfg)))
goto done;
if ((error = git_iterator_for_index(&i, git_index_owner(idx), idx, NULL)) < 0)
goto done;
while (!(error = git_iterator_advance(&entry, i))) {
git_submodule *sm;
if ((sm = git_strmap_get(map, entry->path)) != NULL) {
if (S_ISGITLINK(entry->mode))
submodule_update_from_index_entry(sm, entry);
else
sm->flags |= GIT_SUBMODULE_STATUS__INDEX_NOT_SUBMODULE;
} else if (S_ISGITLINK(entry->mode)) {
const char *name;
if ((name = git_strmap_get(names, entry->path)) == NULL)
name = entry->path;
if (!submodule_get_or_create(&sm, git_index_owner(idx), map, name)) {
submodule_update_from_index_entry(sm, entry);
git_submodule_free(sm);
}
}
}
if (error == GIT_ITEROVER)
error = 0;
done:
git_iterator_free(i);
free_submodule_names(names);
return error;
}
static int submodules_from_head(git_strmap *map, git_tree *head, git_config *cfg)
{
int error;
git_iterator *i = NULL;
const git_index_entry *entry;
git_strmap *names;
if ((error = load_submodule_names(&names, git_tree_owner(head), cfg)))
goto done;
if ((error = git_iterator_for_tree(&i, head, NULL)) < 0)
goto done;
while (!(error = git_iterator_advance(&entry, i))) {
git_submodule *sm;
if ((sm = git_strmap_get(map, entry->path)) != NULL) {
if (S_ISGITLINK(entry->mode))
submodule_update_from_head_data(sm, entry->mode, &entry->id);
else
sm->flags |= GIT_SUBMODULE_STATUS__HEAD_NOT_SUBMODULE;
} else if (S_ISGITLINK(entry->mode)) {
const char *name;
if ((name = git_strmap_get(names, entry->path)) == NULL)
name = entry->path;
if (!submodule_get_or_create(&sm, git_tree_owner(head), map, name)) {
submodule_update_from_head_data(
sm, entry->mode, &entry->id);
git_submodule_free(sm);
}
}
}
if (error == GIT_ITEROVER)
error = 0;
done:
git_iterator_free(i);
free_submodule_names(names);
return error;
}
/* If have_sm is true, sm is populated, otherwise map an repo are. */
typedef struct {
git_config *mods;
git_strmap *map;
git_repository *repo;
} lfc_data;
int git_submodule__map(git_repository *repo, git_strmap *map)
{
int error = 0;
git_index *idx = NULL;
git_tree *head = NULL;
git_buf path = GIT_BUF_INIT;
git_submodule *sm;
git_config *mods = NULL;
bool has_workdir;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(map);
/* get sources that we will need to check */
if (git_repository_index(&idx, repo) < 0)
git_error_clear();
if (git_repository_head_tree(&head, repo) < 0)
git_error_clear();
has_workdir = git_repository_workdir(repo) != NULL;
if (has_workdir &&
(error = git_repository_workdir_path(&path, repo, GIT_MODULES_FILE)) < 0)
goto cleanup;
/* add submodule information from .gitmodules */
if (has_workdir) {
lfc_data data = { 0 };
data.map = map;
data.repo = repo;
if ((error = gitmodules_snapshot(&mods, repo)) < 0) {
if (error == GIT_ENOTFOUND)
error = 0;
goto cleanup;
}
data.mods = mods;
if ((error = git_config_foreach(
mods, submodule_load_each, &data)) < 0)
goto cleanup;
}
/* add back submodule information from index */
if (mods && idx) {
if ((error = submodules_from_index(map, idx, mods)) < 0)
goto cleanup;
}
/* add submodule information from HEAD */
if (mods && head) {
if ((error = submodules_from_head(map, head, mods)) < 0)
goto cleanup;
}
/* shallow scan submodules in work tree as needed */
if (has_workdir) {
git_strmap_foreach_value(map, sm, {
submodule_load_from_wd_lite(sm);
});
}
cleanup:
git_config_free(mods);
/* TODO: if we got an error, mark submodule config as invalid? */
git_index_free(idx);
git_tree_free(head);
git_buf_dispose(&path);
return error;
}
int git_submodule_foreach(
git_repository *repo,
git_submodule_cb callback,
void *payload)
{
git_vector snapshot = GIT_VECTOR_INIT;
git_strmap *submodules;
git_submodule *sm;
int error;
size_t i;
if (repo->is_bare) {
git_error_set(GIT_ERROR_SUBMODULE, "cannot get submodules without a working tree");
return -1;
}
if ((error = git_strmap_new(&submodules)) < 0)
return error;
if ((error = git_submodule__map(repo, submodules)) < 0)
goto done;
if (!(error = git_vector_init(
&snapshot, git_strmap_size(submodules), submodule_cmp))) {
git_strmap_foreach_value(submodules, sm, {
if ((error = git_vector_insert(&snapshot, sm)) < 0)
break;
GIT_REFCOUNT_INC(sm);
});
}
if (error < 0)
goto done;
git_vector_uniq(&snapshot, submodule_free_dup);
git_vector_foreach(&snapshot, i, sm) {
if ((error = callback(sm, sm->name, payload)) != 0) {
git_error_set_after_callback(error);
break;
}
}
done:
git_vector_foreach(&snapshot, i, sm)
git_submodule_free(sm);
git_vector_free(&snapshot);
git_strmap_foreach_value(submodules, sm, {
git_submodule_free(sm);
});
git_strmap_free(submodules);
return error;
}
static int submodule_repo_init(
git_repository **out,
git_repository *parent_repo,
const char *path,
const char *url,
bool use_gitlink)
{
int error = 0;
git_buf workdir = GIT_BUF_INIT, repodir = GIT_BUF_INIT;
git_repository_init_options initopt = GIT_REPOSITORY_INIT_OPTIONS_INIT;
git_repository *subrepo = NULL;
error = git_repository_workdir_path(&workdir, parent_repo, path);
if (error < 0)
goto cleanup;
initopt.flags = GIT_REPOSITORY_INIT_MKPATH | GIT_REPOSITORY_INIT_NO_REINIT;
initopt.origin_url = url;
/* init submodule repository and add origin remote as needed */
/* New style: sub-repo goes in <repo-dir>/modules/<name>/ with a
* gitlink in the sub-repo workdir directory to that repository
*
* Old style: sub-repo goes directly into repo/<name>/.git/
*/
if (use_gitlink) {
error = git_repository_item_path(&repodir, parent_repo, GIT_REPOSITORY_ITEM_MODULES);
if (error < 0)
goto cleanup;
error = git_buf_joinpath(&repodir, repodir.ptr, path);
if (error < 0)
goto cleanup;
initopt.workdir_path = workdir.ptr;
initopt.flags |=
GIT_REPOSITORY_INIT_NO_DOTGIT_DIR |
GIT_REPOSITORY_INIT_RELATIVE_GITLINK;
error = git_repository_init_ext(&subrepo, repodir.ptr, &initopt);
} else
error = git_repository_init_ext(&subrepo, workdir.ptr, &initopt);
cleanup:
git_buf_dispose(&workdir);
git_buf_dispose(&repodir);
*out = subrepo;
return error;
}
int git_submodule_add_setup(
git_submodule **out,
git_repository *repo,
const char *url,
const char *path,
int use_gitlink)
{
int error = 0;
git_config_backend *mods = NULL;
git_submodule *sm = NULL;
git_buf name = GIT_BUF_INIT, real_url = GIT_BUF_INIT;
git_repository *subrepo = NULL;
bool path_occupied;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(url);
GIT_ASSERT_ARG(path);
/* see if there is already an entry for this submodule */
if (git_submodule_lookup(NULL, repo, path) < 0)
git_error_clear();
else {
git_error_set(GIT_ERROR_SUBMODULE,
"attempt to add submodule '%s' that already exists", path);
return GIT_EEXISTS;
}
/* validate and normalize path */
if (git__prefixcmp(path, git_repository_workdir(repo)) == 0)
path += strlen(git_repository_workdir(repo));
if (git_path_root(path) >= 0) {
git_error_set(GIT_ERROR_SUBMODULE, "submodule path must be a relative path");
error = -1;
goto cleanup;
}
if ((error = is_path_occupied(&path_occupied, repo, path)) < 0)
goto cleanup;
if (path_occupied) {
error = GIT_EEXISTS;
goto cleanup;
}
/* update .gitmodules */
if (!(mods = open_gitmodules(repo, GITMODULES_CREATE))) {
git_error_set(GIT_ERROR_SUBMODULE,
"adding submodules to a bare repository is not supported");
return -1;
}
if ((error = git_buf_printf(&name, "submodule.%s.path", path)) < 0 ||
(error = git_config_backend_set_string(mods, name.ptr, path)) < 0)
goto cleanup;
if ((error = submodule_config_key_trunc_puts(&name, "url")) < 0 ||
(error = git_config_backend_set_string(mods, name.ptr, url)) < 0)
goto cleanup;
git_buf_clear(&name);
/* init submodule repository and add origin remote as needed */
error = git_repository_workdir_path(&name, repo, path);
if (error < 0)
goto cleanup;
/* if the repo does not already exist, then init a new repo and add it.
* Otherwise, just add the existing repo.
*/
if (!(git_path_exists(name.ptr) &&
git_path_contains(&name, DOT_GIT))) {
/* resolve the actual URL to use */
if ((error = git_submodule_resolve_url(&real_url, repo, url)) < 0)
goto cleanup;
if ((error = submodule_repo_init(&subrepo, repo, path, real_url.ptr, use_gitlink)) < 0)
goto cleanup;
}
if ((error = git_submodule_lookup(&sm, repo, path)) < 0)
goto cleanup;
error = git_submodule_init(sm, false);
cleanup:
if (error && sm) {
git_submodule_free(sm);
sm = NULL;
}
if (out != NULL)
*out = sm;
git_config_backend_free(mods);
git_repository_free(subrepo);
git_buf_dispose(&real_url);
git_buf_dispose(&name);
return error;
}
int git_submodule_repo_init(
git_repository **out,
const git_submodule *sm,
int use_gitlink)
{
int error;
git_repository *sub_repo = NULL;
const char *configured_url;
git_config *cfg = NULL;
git_buf buf = GIT_BUF_INIT;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(sm);
/* get the configured remote url of the submodule */
if ((error = git_buf_printf(&buf, "submodule.%s.url", sm->name)) < 0 ||
(error = git_repository_config_snapshot(&cfg, sm->repo)) < 0 ||
(error = git_config_get_string(&configured_url, cfg, buf.ptr)) < 0 ||
(error = submodule_repo_init(&sub_repo, sm->repo, sm->path, configured_url, use_gitlink)) < 0)
goto done;
*out = sub_repo;
done:
git_config_free(cfg);
git_buf_dispose(&buf);
return error;
}
static int clone_return_origin(git_remote **out, git_repository *repo, const char *name, const char *url, void *payload)
{
GIT_UNUSED(url);
GIT_UNUSED(payload);
return git_remote_lookup(out, repo, name);
}
static int clone_return_repo(git_repository **out, const char *path, int bare, void *payload)
{
git_submodule *sm = payload;
GIT_UNUSED(path);
GIT_UNUSED(bare);
return git_submodule_open(out, sm);
}
int git_submodule_clone(git_repository **out, git_submodule *submodule, const git_submodule_update_options *given_opts)
{
int error;
git_repository *clone;
git_buf rel_path = GIT_BUF_INIT;
git_submodule_update_options sub_opts = GIT_SUBMODULE_UPDATE_OPTIONS_INIT;
git_clone_options opts = GIT_CLONE_OPTIONS_INIT;
GIT_ASSERT_ARG(submodule);
if (given_opts)
memcpy(&sub_opts, given_opts, sizeof(sub_opts));
GIT_ERROR_CHECK_VERSION(&sub_opts, GIT_SUBMODULE_UPDATE_OPTIONS_VERSION, "git_submodule_update_options");
memcpy(&opts.checkout_opts, &sub_opts.checkout_opts, sizeof(sub_opts.checkout_opts));
memcpy(&opts.fetch_opts, &sub_opts.fetch_opts, sizeof(sub_opts.fetch_opts));
opts.repository_cb = clone_return_repo;
opts.repository_cb_payload = submodule;
opts.remote_cb = clone_return_origin;
opts.remote_cb_payload = submodule;
error = git_repository_workdir_path(&rel_path, git_submodule_owner(submodule), git_submodule_path(submodule));
if (error < 0)
goto cleanup;
error = git_clone__submodule(&clone, git_submodule_url(submodule), git_buf_cstr(&rel_path), &opts);
if (error < 0)
goto cleanup;
if (!out)
git_repository_free(clone);
else
*out = clone;
cleanup:
git_buf_dispose(&rel_path);
return error;
}
int git_submodule_add_finalize(git_submodule *sm)
{
int error;
git_index *index;
GIT_ASSERT_ARG(sm);
if ((error = git_repository_index__weakptr(&index, sm->repo)) < 0 ||
(error = git_index_add_bypath(index, GIT_MODULES_FILE)) < 0)
return error;
return git_submodule_add_to_index(sm, true);
}
int git_submodule_add_to_index(git_submodule *sm, int write_index)
{
int error;
git_repository *sm_repo = NULL;
git_index *index;
git_buf path = GIT_BUF_INIT;
git_commit *head;
git_index_entry entry;
struct stat st;
GIT_ASSERT_ARG(sm);
/* force reload of wd OID by git_submodule_open */
sm->flags = sm->flags & ~GIT_SUBMODULE_STATUS__WD_OID_VALID;
if ((error = git_repository_index__weakptr(&index, sm->repo)) < 0 ||
(error = git_repository_workdir_path(&path, sm->repo, sm->path)) < 0 ||
(error = git_submodule_open(&sm_repo, sm)) < 0)
goto cleanup;
/* read stat information for submodule working directory */
if (p_stat(path.ptr, &st) < 0) {
git_error_set(GIT_ERROR_SUBMODULE,
"cannot add submodule without working directory");
error = -1;
goto cleanup;
}
memset(&entry, 0, sizeof(entry));
entry.path = sm->path;
git_index_entry__init_from_stat(
&entry, &st, !(git_index_caps(index) & GIT_INDEX_CAPABILITY_NO_FILEMODE));
/* calling git_submodule_open will have set sm->wd_oid if possible */
if ((sm->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID) == 0) {
git_error_set(GIT_ERROR_SUBMODULE,
"cannot add submodule without HEAD to index");
error = -1;
goto cleanup;
}
git_oid_cpy(&entry.id, &sm->wd_oid);
if ((error = git_commit_lookup(&head, sm_repo, &sm->wd_oid)) < 0)
goto cleanup;
entry.ctime.seconds = (int32_t)git_commit_time(head);
entry.ctime.nanoseconds = 0;
entry.mtime.seconds = (int32_t)git_commit_time(head);
entry.mtime.nanoseconds = 0;
git_commit_free(head);
/* add it */
error = git_index_add(index, &entry);
/* write it, if requested */
if (!error && write_index) {
error = git_index_write(index);
if (!error)
git_oid_cpy(&sm->index_oid, &sm->wd_oid);
}
cleanup:
git_repository_free(sm_repo);
git_buf_dispose(&path);
return error;
}
static const char *submodule_update_to_str(git_submodule_update_t update)
{
int i;
for (i = 0; i < (int)ARRAY_SIZE(_sm_update_map); ++i)
if (_sm_update_map[i].map_value == (int)update)
return _sm_update_map[i].str_match;
return NULL;
}
git_repository *git_submodule_owner(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, NULL);
return submodule->repo;
}
const char *git_submodule_name(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, NULL);
return submodule->name;
}
const char *git_submodule_path(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, NULL);
return submodule->path;
}
const char *git_submodule_url(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, NULL);
return submodule->url;
}
int git_submodule_resolve_url(git_buf *out, git_repository *repo, const char *url)
{
int error = 0;
git_buf normalized = GIT_BUF_INIT;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(url);
if ((error = git_buf_sanitize(out)) < 0)
return error;
/* We do this in all platforms in case someone on Windows created the .gitmodules */
if (strchr(url, '\\')) {
if ((error = git_path_normalize_slashes(&normalized, url)) < 0)
return error;
url = normalized.ptr;
}
if (git_path_is_relative(url)) {
if (!(error = get_url_base(out, repo)))
error = git_path_apply_relative(out, url);
} else if (strchr(url, ':') != NULL || url[0] == '/') {
error = git_buf_sets(out, url);
} else {
git_error_set(GIT_ERROR_SUBMODULE, "invalid format for submodule URL");
error = -1;
}
git_buf_dispose(&normalized);
return error;
}
static int write_var(git_repository *repo, const char *name, const char *var, const char *val)
{
git_buf key = GIT_BUF_INIT;
git_config_backend *mods;
int error;
mods = open_gitmodules(repo, GITMODULES_CREATE);
if (!mods)
return -1;
if ((error = git_buf_printf(&key, "submodule.%s.%s", name, var)) < 0)
goto cleanup;
if (val)
error = git_config_backend_set_string(mods, key.ptr, val);
else
error = git_config_backend_delete(mods, key.ptr);
git_buf_dispose(&key);
cleanup:
git_config_backend_free(mods);
return error;
}
static int write_mapped_var(git_repository *repo, const char *name, git_configmap *maps, size_t nmaps, const char *var, int ival)
{
git_configmap_t type;
const char *val;
if (git_config_lookup_map_enum(&type, &val, maps, nmaps, ival) < 0) {
git_error_set(GIT_ERROR_SUBMODULE, "invalid value for %s", var);
return -1;
}
if (type == GIT_CONFIGMAP_TRUE)
val = "true";
return write_var(repo, name, var, val);
}
const char *git_submodule_branch(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, NULL);
return submodule->branch;
}
int git_submodule_set_branch(git_repository *repo, const char *name, const char *branch)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
return write_var(repo, name, "branch", branch);
}
int git_submodule_set_url(git_repository *repo, const char *name, const char *url)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
GIT_ASSERT_ARG(url);
return write_var(repo, name, "url", url);
}
const git_oid *git_submodule_index_id(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, NULL);
if (submodule->flags & GIT_SUBMODULE_STATUS__INDEX_OID_VALID)
return &submodule->index_oid;
else
return NULL;
}
const git_oid *git_submodule_head_id(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, NULL);
if (submodule->flags & GIT_SUBMODULE_STATUS__HEAD_OID_VALID)
return &submodule->head_oid;
else
return NULL;
}
const git_oid *git_submodule_wd_id(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, NULL);
/* load unless we think we have a valid oid */
if (!(submodule->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID)) {
git_repository *subrepo;
/* calling submodule open grabs the HEAD OID if possible */
if (!git_submodule_open_bare(&subrepo, submodule))
git_repository_free(subrepo);
else
git_error_clear();
}
if (submodule->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID)
return &submodule->wd_oid;
else
return NULL;
}
git_submodule_ignore_t git_submodule_ignore(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, GIT_SUBMODULE_IGNORE_UNSPECIFIED);
return (submodule->ignore < GIT_SUBMODULE_IGNORE_NONE) ?
GIT_SUBMODULE_IGNORE_NONE : submodule->ignore;
}
int git_submodule_set_ignore(git_repository *repo, const char *name, git_submodule_ignore_t ignore)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
return write_mapped_var(repo, name, _sm_ignore_map, ARRAY_SIZE(_sm_ignore_map), "ignore", ignore);
}
git_submodule_update_t git_submodule_update_strategy(git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, GIT_SUBMODULE_UPDATE_NONE);
return (submodule->update < GIT_SUBMODULE_UPDATE_CHECKOUT) ?
GIT_SUBMODULE_UPDATE_CHECKOUT : submodule->update;
}
int git_submodule_set_update(git_repository *repo, const char *name, git_submodule_update_t update)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
return write_mapped_var(repo, name, _sm_update_map, ARRAY_SIZE(_sm_update_map), "update", update);
}
git_submodule_recurse_t git_submodule_fetch_recurse_submodules(
git_submodule *submodule)
{
GIT_ASSERT_ARG_WITH_RETVAL(submodule, GIT_SUBMODULE_RECURSE_NO);
return submodule->fetch_recurse;
}
int git_submodule_set_fetch_recurse_submodules(git_repository *repo, const char *name, git_submodule_recurse_t recurse)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
return write_mapped_var(repo, name, _sm_recurse_map, ARRAY_SIZE(_sm_recurse_map), "fetchRecurseSubmodules", recurse);
}
static int submodule_repo_create(
git_repository **out,
git_repository *parent_repo,
const char *path)
{
int error = 0;
git_buf workdir = GIT_BUF_INIT, repodir = GIT_BUF_INIT;
git_repository_init_options initopt = GIT_REPOSITORY_INIT_OPTIONS_INIT;
git_repository *subrepo = NULL;
initopt.flags =
GIT_REPOSITORY_INIT_MKPATH |
GIT_REPOSITORY_INIT_NO_REINIT |
GIT_REPOSITORY_INIT_NO_DOTGIT_DIR |
GIT_REPOSITORY_INIT_RELATIVE_GITLINK;
/* Workdir: path to sub-repo working directory */
error = git_repository_workdir_path(&workdir, parent_repo, path);
if (error < 0)
goto cleanup;
initopt.workdir_path = workdir.ptr;
/**
* Repodir: path to the sub-repo. sub-repo goes in:
* <repo-dir>/modules/<name>/ with a gitlink in the
* sub-repo workdir directory to that repository.
*/
error = git_repository_item_path(&repodir, parent_repo, GIT_REPOSITORY_ITEM_MODULES);
if (error < 0)
goto cleanup;
error = git_buf_joinpath(&repodir, repodir.ptr, path);
if (error < 0)
goto cleanup;
error = git_repository_init_ext(&subrepo, repodir.ptr, &initopt);
cleanup:
git_buf_dispose(&workdir);
git_buf_dispose(&repodir);
*out = subrepo;
return error;
}
/**
* Callback to override sub-repository creation when
* cloning a sub-repository.
*/
static int git_submodule_update_repo_init_cb(
git_repository **out,
const char *path,
int bare,
void *payload)
{
git_submodule *sm;
GIT_UNUSED(bare);
sm = payload;
return submodule_repo_create(out, sm->repo, path);
}
int git_submodule_update_options_init(git_submodule_update_options *opts, unsigned int version)
{
GIT_INIT_STRUCTURE_FROM_TEMPLATE(
opts, version, git_submodule_update_options, GIT_SUBMODULE_UPDATE_OPTIONS_INIT);
return 0;
}
#ifndef GIT_DEPRECATE_HARD
int git_submodule_update_init_options(git_submodule_update_options *opts, unsigned int version)
{
return git_submodule_update_options_init(opts, version);
}
#endif
int git_submodule_update(git_submodule *sm, int init, git_submodule_update_options *_update_options)
{
int error;
unsigned int submodule_status;
git_config *config = NULL;
const char *submodule_url;
git_repository *sub_repo = NULL;
git_remote *remote = NULL;
git_object *target_commit = NULL;
git_buf buf = GIT_BUF_INIT;
git_submodule_update_options update_options = GIT_SUBMODULE_UPDATE_OPTIONS_INIT;
git_clone_options clone_options = GIT_CLONE_OPTIONS_INIT;
GIT_ASSERT_ARG(sm);
if (_update_options)
memcpy(&update_options, _update_options, sizeof(git_submodule_update_options));
GIT_ERROR_CHECK_VERSION(&update_options, GIT_SUBMODULE_UPDATE_OPTIONS_VERSION, "git_submodule_update_options");
/* Copy over the remote callbacks */
memcpy(&clone_options.fetch_opts, &update_options.fetch_opts, sizeof(git_fetch_options));
/* Get the status of the submodule to determine if it is already initialized */
if ((error = git_submodule_status(&submodule_status, sm->repo, sm->name, GIT_SUBMODULE_IGNORE_UNSPECIFIED)) < 0)
goto done;
/*
* If submodule work dir is not already initialized, check to see
* what we need to do (initialize, clone, return error...)
*/
if (submodule_status & GIT_SUBMODULE_STATUS_WD_UNINITIALIZED) {
/*
* Work dir is not initialized, check to see if the submodule
* info has been copied into .git/config
*/
if ((error = git_repository_config_snapshot(&config, sm->repo)) < 0 ||
(error = git_buf_printf(&buf, "submodule.%s.url", git_submodule_name(sm))) < 0)
goto done;
if ((error = git_config_get_string(&submodule_url, config, git_buf_cstr(&buf))) < 0) {
/*
* If the error is not "not found" or if it is "not found" and we are not
* initializing the submodule, then return error.
*/
if (error != GIT_ENOTFOUND)
goto done;
if (!init) {
git_error_set(GIT_ERROR_SUBMODULE, "submodule is not initialized");
error = GIT_ERROR;
goto done;
}
/* The submodule has not been initialized yet - initialize it now.*/
if ((error = git_submodule_init(sm, 0)) < 0)
goto done;
git_config_free(config);
config = NULL;
if ((error = git_repository_config_snapshot(&config, sm->repo)) < 0 ||
(error = git_config_get_string(&submodule_url, config, git_buf_cstr(&buf))) < 0)
goto done;
}
/** submodule is initialized - now clone it **/
/* override repo creation */
clone_options.repository_cb = git_submodule_update_repo_init_cb;
clone_options.repository_cb_payload = sm;
/*
* Do not perform checkout as part of clone, instead we
* will checkout the specific commit manually.
*/
clone_options.checkout_opts.checkout_strategy = GIT_CHECKOUT_NONE;
if ((error = git_clone(&sub_repo, submodule_url, sm->path, &clone_options)) < 0 ||
(error = git_repository_set_head_detached(sub_repo, git_submodule_index_id(sm))) < 0 ||
(error = git_checkout_head(sub_repo, &update_options.checkout_opts)) != 0)
goto done;
} else {
const git_oid *oid;
/**
* Work dir is initialized - look up the commit in the parent repository's index,
* update the workdir contents of the subrepository, and set the subrepository's
* head to the new commit.
*/
if ((error = git_submodule_open(&sub_repo, sm)) < 0)
goto done;
if ((oid = git_submodule_index_id(sm)) == NULL) {
git_error_set(GIT_ERROR_SUBMODULE, "could not get ID of submodule in index");
error = -1;
goto done;
}
/* Look up the target commit in the submodule. */
if ((error = git_object_lookup(&target_commit, sub_repo, oid, GIT_OBJECT_COMMIT)) < 0) {
/* If it isn't found then fetch and try again. */
if (error != GIT_ENOTFOUND || !update_options.allow_fetch ||
(error = lookup_default_remote(&remote, sub_repo)) < 0 ||
(error = git_remote_fetch(remote, NULL, &update_options.fetch_opts, NULL)) < 0 ||
(error = git_object_lookup(&target_commit, sub_repo, git_submodule_index_id(sm), GIT_OBJECT_COMMIT)) < 0)
goto done;
}
if ((error = git_checkout_tree(sub_repo, target_commit, &update_options.checkout_opts)) != 0 ||
(error = git_repository_set_head_detached(sub_repo, git_submodule_index_id(sm))) < 0)
goto done;
/* Invalidate the wd flags as the workdir has been updated. */
sm->flags = sm->flags &
~(GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_OID_VALID |
GIT_SUBMODULE_STATUS__WD_SCANNED);
}
done:
git_buf_dispose(&buf);
git_config_free(config);
git_object_free(target_commit);
git_remote_free(remote);
git_repository_free(sub_repo);
return error;
}
int git_submodule_init(git_submodule *sm, int overwrite)
{
int error;
const char *val;
git_buf key = GIT_BUF_INIT, effective_submodule_url = GIT_BUF_INIT;
git_config *cfg = NULL;
if (!sm->url) {
git_error_set(GIT_ERROR_SUBMODULE,
"no URL configured for submodule '%s'", sm->name);
return -1;
}
if ((error = git_repository_config(&cfg, sm->repo)) < 0)
return error;
/* write "submodule.NAME.url" */
if ((error = git_submodule_resolve_url(&effective_submodule_url, sm->repo, sm->url)) < 0 ||
(error = git_buf_printf(&key, "submodule.%s.url", sm->name)) < 0 ||
(error = git_config__update_entry(
cfg, key.ptr, effective_submodule_url.ptr, overwrite != 0, false)) < 0)
goto cleanup;
/* write "submodule.NAME.update" if not default */
val = (sm->update == GIT_SUBMODULE_UPDATE_CHECKOUT) ?
NULL : submodule_update_to_str(sm->update);
if ((error = git_buf_printf(&key, "submodule.%s.update", sm->name)) < 0 ||
(error = git_config__update_entry(
cfg, key.ptr, val, overwrite != 0, false)) < 0)
goto cleanup;
/* success */
cleanup:
git_config_free(cfg);
git_buf_dispose(&key);
git_buf_dispose(&effective_submodule_url);
return error;
}
int git_submodule_sync(git_submodule *sm)
{
git_buf key = GIT_BUF_INIT, url = GIT_BUF_INIT, remote_name = GIT_BUF_INIT;
git_repository *smrepo = NULL;
git_config *cfg = NULL;
int error = 0;
if (!sm->url) {
git_error_set(GIT_ERROR_SUBMODULE, "no URL configured for submodule '%s'", sm->name);
return -1;
}
/* copy URL over to config only if it already exists */
if ((error = git_repository_config__weakptr(&cfg, sm->repo)) < 0 ||
(error = git_buf_printf(&key, "submodule.%s.url", sm->name)) < 0 ||
(error = git_submodule_resolve_url(&url, sm->repo, sm->url)) < 0 ||
(error = git_config__update_entry(cfg, key.ptr, url.ptr, true, true)) < 0)
goto out;
if (!(sm->flags & GIT_SUBMODULE_STATUS_IN_WD))
goto out;
/* if submodule exists in the working directory, update remote url */
if ((error = git_submodule_open(&smrepo, sm)) < 0 ||
(error = git_repository_config__weakptr(&cfg, smrepo)) < 0)
goto out;
if (lookup_head_remote_key(&remote_name, smrepo) == 0) {
if ((error = git_buf_join3(&key, '.', "remote", remote_name.ptr, "url")) < 0)
goto out;
} else if ((error = git_buf_sets(&key, "remote.origin.url")) < 0) {
goto out;
}
if ((error = git_config__update_entry(cfg, key.ptr, url.ptr, true, false)) < 0)
goto out;
out:
git_repository_free(smrepo);
git_buf_dispose(&remote_name);
git_buf_dispose(&key);
git_buf_dispose(&url);
return error;
}
static int git_submodule__open(
git_repository **subrepo, git_submodule *sm, bool bare)
{
int error;
git_buf path = GIT_BUF_INIT;
unsigned int flags = GIT_REPOSITORY_OPEN_NO_SEARCH;
const char *wd;
GIT_ASSERT_ARG(sm);
GIT_ASSERT_ARG(subrepo);
if (git_repository__ensure_not_bare(
sm->repo, "open submodule repository") < 0)
return GIT_EBAREREPO;
wd = git_repository_workdir(sm->repo);
if (git_buf_join3(&path, '/', wd, sm->path, DOT_GIT) < 0)
return -1;
sm->flags = sm->flags &
~(GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_OID_VALID |
GIT_SUBMODULE_STATUS__WD_SCANNED);
if (bare)
flags |= GIT_REPOSITORY_OPEN_BARE;
error = git_repository_open_ext(subrepo, path.ptr, flags, wd);
/* if we opened the submodule successfully, grab HEAD OID, etc. */
if (!error) {
sm->flags |= GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_SCANNED;
if (!git_reference_name_to_id(&sm->wd_oid, *subrepo, GIT_HEAD_FILE))
sm->flags |= GIT_SUBMODULE_STATUS__WD_OID_VALID;
else
git_error_clear();
} else if (git_path_exists(path.ptr)) {
sm->flags |= GIT_SUBMODULE_STATUS__WD_SCANNED |
GIT_SUBMODULE_STATUS_IN_WD;
} else {
git_buf_rtruncate_at_char(&path, '/'); /* remove "/.git" */
if (git_path_isdir(path.ptr))
sm->flags |= GIT_SUBMODULE_STATUS__WD_SCANNED;
}
git_buf_dispose(&path);
return error;
}
int git_submodule_open_bare(git_repository **subrepo, git_submodule *sm)
{
return git_submodule__open(subrepo, sm, true);
}
int git_submodule_open(git_repository **subrepo, git_submodule *sm)
{
return git_submodule__open(subrepo, sm, false);
}
static void submodule_update_from_index_entry(
git_submodule *sm, const git_index_entry *ie)
{
bool already_found = (sm->flags & GIT_SUBMODULE_STATUS_IN_INDEX) != 0;
if (!S_ISGITLINK(ie->mode)) {
if (!already_found)
sm->flags |= GIT_SUBMODULE_STATUS__INDEX_NOT_SUBMODULE;
} else {
if (already_found)
sm->flags |= GIT_SUBMODULE_STATUS__INDEX_MULTIPLE_ENTRIES;
else
git_oid_cpy(&sm->index_oid, &ie->id);
sm->flags |= GIT_SUBMODULE_STATUS_IN_INDEX |
GIT_SUBMODULE_STATUS__INDEX_OID_VALID;
}
}
static int submodule_update_index(git_submodule *sm)
{
git_index *index;
const git_index_entry *ie;
if (git_repository_index__weakptr(&index, sm->repo) < 0)
return -1;
sm->flags = sm->flags &
~(GIT_SUBMODULE_STATUS_IN_INDEX |
GIT_SUBMODULE_STATUS__INDEX_OID_VALID);
if (!(ie = git_index_get_bypath(index, sm->path, 0)))
return 0;
submodule_update_from_index_entry(sm, ie);
return 0;
}
static void submodule_update_from_head_data(
git_submodule *sm, mode_t mode, const git_oid *id)
{
if (!S_ISGITLINK(mode))
sm->flags |= GIT_SUBMODULE_STATUS__HEAD_NOT_SUBMODULE;
else {
git_oid_cpy(&sm->head_oid, id);
sm->flags |= GIT_SUBMODULE_STATUS_IN_HEAD |
GIT_SUBMODULE_STATUS__HEAD_OID_VALID;
}
}
static int submodule_update_head(git_submodule *submodule)
{
git_tree *head = NULL;
git_tree_entry *te = NULL;
submodule->flags = submodule->flags &
~(GIT_SUBMODULE_STATUS_IN_HEAD |
GIT_SUBMODULE_STATUS__HEAD_OID_VALID);
/* if we can't look up file in current head, then done */
if (git_repository_head_tree(&head, submodule->repo) < 0 ||
git_tree_entry_bypath(&te, head, submodule->path) < 0)
git_error_clear();
else
submodule_update_from_head_data(submodule, te->attr, git_tree_entry_id(te));
git_tree_entry_free(te);
git_tree_free(head);
return 0;
}
int git_submodule_reload(git_submodule *sm, int force)
{
git_config *mods = NULL;
int error;
GIT_UNUSED(force);
GIT_ASSERT_ARG(sm);
if ((error = git_submodule_name_is_valid(sm->repo, sm->name, 0)) <= 0)
/* This should come with a warning, but we've no API for that */
goto out;
if (git_repository_is_bare(sm->repo))
goto out;
/* refresh config data */
if ((error = gitmodules_snapshot(&mods, sm->repo)) < 0 && error != GIT_ENOTFOUND)
goto out;
if (mods != NULL && (error = submodule_read_config(sm, mods)) < 0)
goto out;
/* refresh wd data */
sm->flags &=
~(GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_OID_VALID |
GIT_SUBMODULE_STATUS__WD_FLAGS);
if ((error = submodule_load_from_wd_lite(sm)) < 0 ||
(error = submodule_update_index(sm)) < 0 ||
(error = submodule_update_head(sm)) < 0)
goto out;
out:
git_config_free(mods);
return error;
}
static void submodule_copy_oid_maybe(
git_oid *tgt, const git_oid *src, bool valid)
{
if (tgt) {
if (valid)
memcpy(tgt, src, sizeof(*tgt));
else
memset(tgt, 0, sizeof(*tgt));
}
}
int git_submodule__status(
unsigned int *out_status,
git_oid *out_head_id,
git_oid *out_index_id,
git_oid *out_wd_id,
git_submodule *sm,
git_submodule_ignore_t ign)
{
unsigned int status;
git_repository *smrepo = NULL;
if (ign == GIT_SUBMODULE_IGNORE_UNSPECIFIED)
ign = sm->ignore;
/* only return location info if ignore == all */
if (ign == GIT_SUBMODULE_IGNORE_ALL) {
*out_status = (sm->flags & GIT_SUBMODULE_STATUS__IN_FLAGS);
return 0;
}
/* If the user has requested caching submodule state, performing these
* expensive operations (especially `submodule_update_head`, which is
* bottlenecked on `git_repository_head_tree`) eliminates much of the
* advantage. We will, therefore, interpret the request for caching to
* apply here to and skip them.
*/
if (sm->repo->submodule_cache == NULL) {
/* refresh the index OID */
if (submodule_update_index(sm) < 0)
return -1;
/* refresh the HEAD OID */
if (submodule_update_head(sm) < 0)
return -1;
}
/* for ignore == dirty, don't scan the working directory */
if (ign == GIT_SUBMODULE_IGNORE_DIRTY) {
/* git_submodule_open_bare will load WD OID data */
if (git_submodule_open_bare(&smrepo, sm) < 0)
git_error_clear();
else
git_repository_free(smrepo);
smrepo = NULL;
} else if (git_submodule_open(&smrepo, sm) < 0) {
git_error_clear();
smrepo = NULL;
}
status = GIT_SUBMODULE_STATUS__CLEAR_INTERNAL(sm->flags);
submodule_get_index_status(&status, sm);
submodule_get_wd_status(&status, sm, smrepo, ign);
git_repository_free(smrepo);
*out_status = status;
submodule_copy_oid_maybe(out_head_id, &sm->head_oid,
(sm->flags & GIT_SUBMODULE_STATUS__HEAD_OID_VALID) != 0);
submodule_copy_oid_maybe(out_index_id, &sm->index_oid,
(sm->flags & GIT_SUBMODULE_STATUS__INDEX_OID_VALID) != 0);
submodule_copy_oid_maybe(out_wd_id, &sm->wd_oid,
(sm->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID) != 0);
return 0;
}
int git_submodule_status(unsigned int *status, git_repository *repo, const char *name, git_submodule_ignore_t ignore)
{
git_submodule *sm;
int error;
GIT_ASSERT_ARG(status);
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
if ((error = git_submodule_lookup(&sm, repo, name)) < 0)
return error;
error = git_submodule__status(status, NULL, NULL, NULL, sm, ignore);
git_submodule_free(sm);
return error;
}
int git_submodule_location(unsigned int *location, git_submodule *sm)
{
GIT_ASSERT_ARG(location);
GIT_ASSERT_ARG(sm);
return git_submodule__status(
location, NULL, NULL, NULL, sm, GIT_SUBMODULE_IGNORE_ALL);
}
/*
* INTERNAL FUNCTIONS
*/
static int submodule_alloc(
git_submodule **out, git_repository *repo, const char *name)
{
size_t namelen;
git_submodule *sm;
if (!name || !(namelen = strlen(name))) {
git_error_set(GIT_ERROR_SUBMODULE, "invalid submodule name");
return -1;
}
sm = git__calloc(1, sizeof(git_submodule));
GIT_ERROR_CHECK_ALLOC(sm);
sm->name = sm->path = git__strdup(name);
if (!sm->name) {
git__free(sm);
return -1;
}
GIT_REFCOUNT_INC(sm);
sm->ignore = sm->ignore_default = GIT_SUBMODULE_IGNORE_NONE;
sm->update = sm->update_default = GIT_SUBMODULE_UPDATE_CHECKOUT;
sm->fetch_recurse = sm->fetch_recurse_default = GIT_SUBMODULE_RECURSE_NO;
sm->repo = repo;
sm->branch = NULL;
*out = sm;
return 0;
}
static void submodule_release(git_submodule *sm)
{
if (!sm)
return;
if (sm->repo) {
sm->repo = NULL;
}
if (sm->path != sm->name)
git__free(sm->path);
git__free(sm->name);
git__free(sm->url);
git__free(sm->branch);
git__memzero(sm, sizeof(*sm));
git__free(sm);
}
int git_submodule_dup(git_submodule **out, git_submodule *source)
{
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(source);
GIT_REFCOUNT_INC(source);
*out = source;
return 0;
}
void git_submodule_free(git_submodule *sm)
{
if (!sm)
return;
GIT_REFCOUNT_DEC(sm, submodule_release);
}
static int submodule_config_error(const char *property, const char *value)
{
git_error_set(GIT_ERROR_INVALID,
"invalid value for submodule '%s' property: '%s'", property, value);
return -1;
}
int git_submodule_parse_ignore(git_submodule_ignore_t *out, const char *value)
{
int val;
if (git_config_lookup_map_value(
&val, _sm_ignore_map, ARRAY_SIZE(_sm_ignore_map), value) < 0) {
*out = GIT_SUBMODULE_IGNORE_NONE;
return submodule_config_error("ignore", value);
}
*out = (git_submodule_ignore_t)val;
return 0;
}
int git_submodule_parse_update(git_submodule_update_t *out, const char *value)
{
int val;
if (git_config_lookup_map_value(
&val, _sm_update_map, ARRAY_SIZE(_sm_update_map), value) < 0) {
*out = GIT_SUBMODULE_UPDATE_CHECKOUT;
return submodule_config_error("update", value);
}
*out = (git_submodule_update_t)val;
return 0;
}
static int submodule_parse_recurse(git_submodule_recurse_t *out, const char *value)
{
int val;
if (git_config_lookup_map_value(
&val, _sm_recurse_map, ARRAY_SIZE(_sm_recurse_map), value) < 0) {
*out = GIT_SUBMODULE_RECURSE_YES;
return submodule_config_error("recurse", value);
}
*out = (git_submodule_recurse_t)val;
return 0;
}
static int get_value(const char **out, git_config *cfg, git_buf *buf, const char *name, const char *field)
{
int error;
git_buf_clear(buf);
if ((error = git_buf_printf(buf, "submodule.%s.%s", name, field)) < 0 ||
(error = git_config_get_string(out, cfg, buf->ptr)) < 0)
return error;
return error;
}
static bool looks_like_command_line_option(const char *s)
{
if (s && s[0] == '-')
return true;
return false;
}
static int submodule_read_config(git_submodule *sm, git_config *cfg)
{
git_buf key = GIT_BUF_INIT;
const char *value;
int error, in_config = 0;
/*
* TODO: Look up path in index and if it is present but not a GITLINK
* then this should be deleted (at least to match git's behavior)
*/
if ((error = get_value(&value, cfg, &key, sm->name, "path")) == 0) {
in_config = 1;
/* We would warn here if we had that API */
if (!looks_like_command_line_option(value)) {
/*
* TODO: if case insensitive filesystem, then the following strcmp
* should be strcasecmp
*/
if (strcmp(sm->name, value) != 0) {
if (sm->path != sm->name)
git__free(sm->path);
sm->path = git__strdup(value);
GIT_ERROR_CHECK_ALLOC(sm->path);
}
}
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "url")) == 0) {
/* We would warn here if we had that API */
if (!looks_like_command_line_option(value)) {
in_config = 1;
sm->url = git__strdup(value);
GIT_ERROR_CHECK_ALLOC(sm->url);
}
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "branch")) == 0) {
in_config = 1;
sm->branch = git__strdup(value);
GIT_ERROR_CHECK_ALLOC(sm->branch);
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "update")) == 0) {
in_config = 1;
if ((error = git_submodule_parse_update(&sm->update, value)) < 0)
goto cleanup;
sm->update_default = sm->update;
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "fetchRecurseSubmodules")) == 0) {
in_config = 1;
if ((error = submodule_parse_recurse(&sm->fetch_recurse, value)) < 0)
goto cleanup;
sm->fetch_recurse_default = sm->fetch_recurse;
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "ignore")) == 0) {
in_config = 1;
if ((error = git_submodule_parse_ignore(&sm->ignore, value)) < 0)
goto cleanup;
sm->ignore_default = sm->ignore;
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if (in_config)
sm->flags |= GIT_SUBMODULE_STATUS_IN_CONFIG;
error = 0;
cleanup:
git_buf_dispose(&key);
return error;
}
static int submodule_load_each(const git_config_entry *entry, void *payload)
{
lfc_data *data = payload;
const char *namestart, *property;
git_strmap *map = data->map;
git_buf name = GIT_BUF_INIT;
git_submodule *sm;
int error, isvalid;
if (git__prefixcmp(entry->name, "submodule.") != 0)
return 0;
namestart = entry->name + strlen("submodule.");
property = strrchr(namestart, '.');
if (!property || (property == namestart))
return 0;
property++;
if ((error = git_buf_set(&name, namestart, property - namestart -1)) < 0)
return error;
isvalid = git_submodule_name_is_valid(data->repo, name.ptr, 0);
if (isvalid <= 0) {
error = isvalid;
goto done;
}
/*
* Now that we have the submodule's name, we can use that to
* figure out whether it's in the map. If it's not, we create
* a new submodule, load the config and insert it. If it's
* already inserted, we've already loaded it, so we skip.
*/
if (git_strmap_exists(map, name.ptr)) {
error = 0;
goto done;
}
if ((error = submodule_alloc(&sm, data->repo, name.ptr)) < 0)
goto done;
if ((error = submodule_read_config(sm, data->mods)) < 0) {
git_submodule_free(sm);
goto done;
}
if ((error = git_strmap_set(map, sm->name, sm)) < 0)
goto done;
error = 0;
done:
git_buf_dispose(&name);
return error;
}
static int submodule_load_from_wd_lite(git_submodule *sm)
{
git_buf path = GIT_BUF_INIT;
if (git_repository_workdir_path(&path, sm->repo, sm->path) < 0)
return -1;
if (git_path_isdir(path.ptr))
sm->flags |= GIT_SUBMODULE_STATUS__WD_SCANNED;
if (git_path_contains(&path, DOT_GIT))
sm->flags |= GIT_SUBMODULE_STATUS_IN_WD;
git_buf_dispose(&path);
return 0;
}
/**
* Requests a snapshot of $WORK_TREE/.gitmodules.
*
* Returns GIT_ENOTFOUND in case no .gitmodules file exist
*/
static int gitmodules_snapshot(git_config **snap, git_repository *repo)
{
git_config *mods = NULL;
git_buf path = GIT_BUF_INIT;
int error;
if (git_repository_workdir(repo) == NULL)
return GIT_ENOTFOUND;
if ((error = git_repository_workdir_path(&path, repo, GIT_MODULES_FILE)) < 0)
return error;
if ((error = git_config_open_ondisk(&mods, path.ptr)) < 0)
goto cleanup;
git_buf_dispose(&path);
if ((error = git_config_snapshot(snap, mods)) < 0)
goto cleanup;
error = 0;
cleanup:
if (mods)
git_config_free(mods);
git_buf_dispose(&path);
return error;
}
static git_config_backend *open_gitmodules(
git_repository *repo,
int okay_to_create)
{
git_buf path = GIT_BUF_INIT;
git_config_backend *mods = NULL;
if (git_repository_workdir(repo) != NULL) {
if (git_repository_workdir_path(&path, repo, GIT_MODULES_FILE) != 0)
return NULL;
if (okay_to_create || git_path_isfile(path.ptr)) {
/* git_config_backend_from_file should only fail if OOM */
if (git_config_backend_from_file(&mods, path.ptr) < 0)
mods = NULL;
/* open should only fail here if the file is malformed */
else if (git_config_backend_open(mods, GIT_CONFIG_LEVEL_LOCAL, repo) < 0) {
git_config_backend_free(mods);
mods = NULL;
}
}
}
git_buf_dispose(&path);
return mods;
}
/* Lookup name of remote of the local tracking branch HEAD points to */
static int lookup_head_remote_key(git_buf *remote_name, git_repository *repo)
{
int error;
git_reference *head = NULL;
git_buf upstream_name = GIT_BUF_INIT;
/* lookup and dereference HEAD */
if ((error = git_repository_head(&head, repo)) < 0)
return error;
/**
* If head does not refer to a branch, then return
* GIT_ENOTFOUND to indicate that we could not find
* a remote key for the local tracking branch HEAD points to.
**/
if (!git_reference_is_branch(head)) {
git_error_set(GIT_ERROR_INVALID,
"HEAD does not refer to a branch.");
error = GIT_ENOTFOUND;
goto done;
}
/* lookup remote tracking branch of HEAD */
if ((error = git_branch_upstream_name(
&upstream_name,
repo,
git_reference_name(head))) < 0)
goto done;
/* lookup remote of remote tracking branch */
if ((error = git_branch_remote_name(remote_name, repo, upstream_name.ptr)) < 0)
goto done;
done:
git_buf_dispose(&upstream_name);
git_reference_free(head);
return error;
}
/* Lookup the remote of the local tracking branch HEAD points to */
static int lookup_head_remote(git_remote **remote, git_repository *repo)
{
int error;
git_buf remote_name = GIT_BUF_INIT;
/* lookup remote of remote tracking branch name */
if (!(error = lookup_head_remote_key(&remote_name, repo)))
error = git_remote_lookup(remote, repo, remote_name.ptr);
git_buf_dispose(&remote_name);
return error;
}
/* Lookup remote, either from HEAD or fall back on origin */
static int lookup_default_remote(git_remote **remote, git_repository *repo)
{
int error = lookup_head_remote(remote, repo);
/* if that failed, use 'origin' instead */
if (error == GIT_ENOTFOUND || error == GIT_EUNBORNBRANCH)
error = git_remote_lookup(remote, repo, "origin");
if (error == GIT_ENOTFOUND)
git_error_set(
GIT_ERROR_SUBMODULE,
"cannot get default remote for submodule - no local tracking "
"branch for HEAD and origin does not exist");
return error;
}
static int get_url_base(git_buf *url, git_repository *repo)
{
int error;
git_worktree *wt = NULL;
git_remote *remote = NULL;
if ((error = lookup_default_remote(&remote, repo)) == 0) {
error = git_buf_sets(url, git_remote_url(remote));
goto out;
} else if (error != GIT_ENOTFOUND)
goto out;
else
git_error_clear();
/* if repository does not have a default remote, use workdir instead */
if (git_repository_is_worktree(repo)) {
if ((error = git_worktree_open_from_repository(&wt, repo)) < 0)
goto out;
error = git_buf_sets(url, wt->parent_path);
} else {
error = git_buf_sets(url, git_repository_workdir(repo));
}
out:
git_remote_free(remote);
git_worktree_free(wt);
return error;
}
static void submodule_get_index_status(unsigned int *status, git_submodule *sm)
{
const git_oid *head_oid = git_submodule_head_id(sm);
const git_oid *index_oid = git_submodule_index_id(sm);
*status = *status & ~GIT_SUBMODULE_STATUS__INDEX_FLAGS;
if (!head_oid) {
if (index_oid)
*status |= GIT_SUBMODULE_STATUS_INDEX_ADDED;
}
else if (!index_oid)
*status |= GIT_SUBMODULE_STATUS_INDEX_DELETED;
else if (!git_oid_equal(head_oid, index_oid))
*status |= GIT_SUBMODULE_STATUS_INDEX_MODIFIED;
}
static void submodule_get_wd_status(
unsigned int *status,
git_submodule *sm,
git_repository *sm_repo,
git_submodule_ignore_t ign)
{
const git_oid *index_oid = git_submodule_index_id(sm);
const git_oid *wd_oid =
(sm->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID) ? &sm->wd_oid : NULL;
git_tree *sm_head = NULL;
git_index *index = NULL;
git_diff_options opt = GIT_DIFF_OPTIONS_INIT;
git_diff *diff;
*status = *status & ~GIT_SUBMODULE_STATUS__WD_FLAGS;
if (!index_oid) {
if (wd_oid)
*status |= GIT_SUBMODULE_STATUS_WD_ADDED;
}
else if (!wd_oid) {
if ((sm->flags & GIT_SUBMODULE_STATUS__WD_SCANNED) != 0 &&
(sm->flags & GIT_SUBMODULE_STATUS_IN_WD) == 0)
*status |= GIT_SUBMODULE_STATUS_WD_UNINITIALIZED;
else
*status |= GIT_SUBMODULE_STATUS_WD_DELETED;
}
else if (!git_oid_equal(index_oid, wd_oid))
*status |= GIT_SUBMODULE_STATUS_WD_MODIFIED;
/* if we have no repo, then we're done */
if (!sm_repo)
return;
/* the diffs below could be optimized with an early termination
* option to the git_diff functions, but for now this is sufficient
* (and certainly no worse that what core git does).
*/
if (ign == GIT_SUBMODULE_IGNORE_NONE)
opt.flags |= GIT_DIFF_INCLUDE_UNTRACKED;
(void)git_repository_index__weakptr(&index, sm_repo);
/* if we don't have an unborn head, check diff with index */
if (git_repository_head_tree(&sm_head, sm_repo) < 0)
git_error_clear();
else {
/* perform head to index diff on submodule */
if (git_diff_tree_to_index(&diff, sm_repo, sm_head, index, &opt) < 0)
git_error_clear();
else {
if (git_diff_num_deltas(diff) > 0)
*status |= GIT_SUBMODULE_STATUS_WD_INDEX_MODIFIED;
git_diff_free(diff);
diff = NULL;
}
git_tree_free(sm_head);
}
/* perform index-to-workdir diff on submodule */
if (git_diff_index_to_workdir(&diff, sm_repo, index, &opt) < 0)
git_error_clear();
else {
size_t untracked =
git_diff_num_deltas_of_type(diff, GIT_DELTA_UNTRACKED);
if (untracked > 0)
*status |= GIT_SUBMODULE_STATUS_WD_UNTRACKED;
if (git_diff_num_deltas(diff) != untracked)
*status |= GIT_SUBMODULE_STATUS_WD_WD_MODIFIED;
git_diff_free(diff);
diff = NULL;
}
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/cherrypick.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "repository.h"
#include "filebuf.h"
#include "merge.h"
#include "vector.h"
#include "index.h"
#include "git2/types.h"
#include "git2/merge.h"
#include "git2/cherrypick.h"
#include "git2/commit.h"
#include "git2/sys/commit.h"
#define GIT_CHERRYPICK_FILE_MODE 0666
static int write_cherrypick_head(
git_repository *repo,
const char *commit_oidstr)
{
git_filebuf file = GIT_FILEBUF_INIT;
git_buf file_path = GIT_BUF_INIT;
int error = 0;
if ((error = git_buf_joinpath(&file_path, repo->gitdir, GIT_CHERRYPICK_HEAD_FILE)) >= 0 &&
(error = git_filebuf_open(&file, file_path.ptr, GIT_FILEBUF_CREATE_LEADING_DIRS, GIT_CHERRYPICK_FILE_MODE)) >= 0 &&
(error = git_filebuf_printf(&file, "%s\n", commit_oidstr)) >= 0)
error = git_filebuf_commit(&file);
if (error < 0)
git_filebuf_cleanup(&file);
git_buf_dispose(&file_path);
return error;
}
static int write_merge_msg(
git_repository *repo,
const char *commit_msg)
{
git_filebuf file = GIT_FILEBUF_INIT;
git_buf file_path = GIT_BUF_INIT;
int error = 0;
if ((error = git_buf_joinpath(&file_path, repo->gitdir, GIT_MERGE_MSG_FILE)) < 0 ||
(error = git_filebuf_open(&file, file_path.ptr, GIT_FILEBUF_CREATE_LEADING_DIRS, GIT_CHERRYPICK_FILE_MODE)) < 0 ||
(error = git_filebuf_printf(&file, "%s", commit_msg)) < 0)
goto cleanup;
error = git_filebuf_commit(&file);
cleanup:
if (error < 0)
git_filebuf_cleanup(&file);
git_buf_dispose(&file_path);
return error;
}
static int cherrypick_normalize_opts(
git_repository *repo,
git_cherrypick_options *opts,
const git_cherrypick_options *given,
const char *their_label)
{
int error = 0;
unsigned int default_checkout_strategy = GIT_CHECKOUT_SAFE |
GIT_CHECKOUT_ALLOW_CONFLICTS;
GIT_UNUSED(repo);
if (given != NULL)
memcpy(opts, given, sizeof(git_cherrypick_options));
else {
git_cherrypick_options default_opts = GIT_CHERRYPICK_OPTIONS_INIT;
memcpy(opts, &default_opts, sizeof(git_cherrypick_options));
}
if (!opts->checkout_opts.checkout_strategy)
opts->checkout_opts.checkout_strategy = default_checkout_strategy;
if (!opts->checkout_opts.our_label)
opts->checkout_opts.our_label = "HEAD";
if (!opts->checkout_opts.their_label)
opts->checkout_opts.their_label = their_label;
return error;
}
static int cherrypick_state_cleanup(git_repository *repo)
{
const char *state_files[] = { GIT_CHERRYPICK_HEAD_FILE, GIT_MERGE_MSG_FILE };
return git_repository__cleanup_files(repo, state_files, ARRAY_SIZE(state_files));
}
static int cherrypick_seterr(git_commit *commit, const char *fmt)
{
char commit_oidstr[GIT_OID_HEXSZ + 1];
git_error_set(GIT_ERROR_CHERRYPICK, fmt,
git_oid_tostr(commit_oidstr, GIT_OID_HEXSZ + 1, git_commit_id(commit)));
return -1;
}
int git_cherrypick_commit(
git_index **out,
git_repository *repo,
git_commit *cherrypick_commit,
git_commit *our_commit,
unsigned int mainline,
const git_merge_options *merge_opts)
{
git_commit *parent_commit = NULL;
git_tree *parent_tree = NULL, *our_tree = NULL, *cherrypick_tree = NULL;
int parent = 0, error = 0;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(cherrypick_commit);
GIT_ASSERT_ARG(our_commit);
if (git_commit_parentcount(cherrypick_commit) > 1) {
if (!mainline)
return cherrypick_seterr(cherrypick_commit,
"mainline branch is not specified but %s is a merge commit");
parent = mainline;
} else {
if (mainline)
return cherrypick_seterr(cherrypick_commit,
"mainline branch specified but %s is not a merge commit");
parent = git_commit_parentcount(cherrypick_commit);
}
if (parent &&
((error = git_commit_parent(&parent_commit, cherrypick_commit, (parent - 1))) < 0 ||
(error = git_commit_tree(&parent_tree, parent_commit)) < 0))
goto done;
if ((error = git_commit_tree(&cherrypick_tree, cherrypick_commit)) < 0 ||
(error = git_commit_tree(&our_tree, our_commit)) < 0)
goto done;
error = git_merge_trees(out, repo, parent_tree, our_tree, cherrypick_tree, merge_opts);
done:
git_tree_free(parent_tree);
git_tree_free(our_tree);
git_tree_free(cherrypick_tree);
git_commit_free(parent_commit);
return error;
}
int git_cherrypick(
git_repository *repo,
git_commit *commit,
const git_cherrypick_options *given_opts)
{
git_cherrypick_options opts;
git_reference *our_ref = NULL;
git_commit *our_commit = NULL;
char commit_oidstr[GIT_OID_HEXSZ + 1];
const char *commit_msg, *commit_summary;
git_buf their_label = GIT_BUF_INIT;
git_index *index = NULL;
git_indexwriter indexwriter = GIT_INDEXWRITER_INIT;
int error = 0;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(commit);
GIT_ERROR_CHECK_VERSION(given_opts, GIT_CHERRYPICK_OPTIONS_VERSION, "git_cherrypick_options");
if ((error = git_repository__ensure_not_bare(repo, "cherry-pick")) < 0)
return error;
if ((commit_msg = git_commit_message(commit)) == NULL ||
(commit_summary = git_commit_summary(commit)) == NULL) {
error = -1;
goto on_error;
}
git_oid_nfmt(commit_oidstr, sizeof(commit_oidstr), git_commit_id(commit));
if ((error = write_merge_msg(repo, commit_msg)) < 0 ||
(error = git_buf_printf(&their_label, "%.7s... %s", commit_oidstr, commit_summary)) < 0 ||
(error = cherrypick_normalize_opts(repo, &opts, given_opts, git_buf_cstr(&their_label))) < 0 ||
(error = git_indexwriter_init_for_operation(&indexwriter, repo, &opts.checkout_opts.checkout_strategy)) < 0 ||
(error = write_cherrypick_head(repo, commit_oidstr)) < 0 ||
(error = git_repository_head(&our_ref, repo)) < 0 ||
(error = git_reference_peel((git_object **)&our_commit, our_ref, GIT_OBJECT_COMMIT)) < 0 ||
(error = git_cherrypick_commit(&index, repo, commit, our_commit, opts.mainline, &opts.merge_opts)) < 0 ||
(error = git_merge__check_result(repo, index)) < 0 ||
(error = git_merge__append_conflicts_to_merge_msg(repo, index)) < 0 ||
(error = git_checkout_index(repo, index, &opts.checkout_opts)) < 0 ||
(error = git_indexwriter_commit(&indexwriter)) < 0)
goto on_error;
goto done;
on_error:
cherrypick_state_cleanup(repo);
done:
git_indexwriter_cleanup(&indexwriter);
git_index_free(index);
git_commit_free(our_commit);
git_reference_free(our_ref);
git_buf_dispose(&their_label);
return error;
}
int git_cherrypick_options_init(
git_cherrypick_options *opts, unsigned int version)
{
GIT_INIT_STRUCTURE_FROM_TEMPLATE(
opts, version, git_cherrypick_options, GIT_CHERRYPICK_OPTIONS_INIT);
return 0;
}
#ifndef GIT_DEPRECATE_HARD
int git_cherrypick_init_options(
git_cherrypick_options *opts, unsigned int version)
{
return git_cherrypick_options_init(opts, version);
}
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/worktree.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "worktree.h"
#include "git2/branch.h"
#include "git2/commit.h"
#include "git2/worktree.h"
#include "repository.h"
static bool is_worktree_dir(const char *dir)
{
git_buf buf = GIT_BUF_INIT;
int error;
if (git_buf_sets(&buf, dir) < 0)
return -1;
error = git_path_contains_file(&buf, "commondir")
&& git_path_contains_file(&buf, "gitdir")
&& git_path_contains_file(&buf, "HEAD");
git_buf_dispose(&buf);
return error;
}
int git_worktree_list(git_strarray *wts, git_repository *repo)
{
git_vector worktrees = GIT_VECTOR_INIT;
git_buf path = GIT_BUF_INIT;
char *worktree;
size_t i, len;
int error;
GIT_ASSERT_ARG(wts);
GIT_ASSERT_ARG(repo);
wts->count = 0;
wts->strings = NULL;
if ((error = git_buf_joinpath(&path, repo->commondir, "worktrees/")) < 0)
goto exit;
if (!git_path_exists(path.ptr) || git_path_is_empty_dir(path.ptr))
goto exit;
if ((error = git_path_dirload(&worktrees, path.ptr, path.size, 0x0)) < 0)
goto exit;
len = path.size;
git_vector_foreach(&worktrees, i, worktree) {
git_buf_truncate(&path, len);
git_buf_puts(&path, worktree);
if (!is_worktree_dir(path.ptr)) {
git_vector_remove(&worktrees, i);
git__free(worktree);
}
}
wts->strings = (char **)git_vector_detach(&wts->count, NULL, &worktrees);
exit:
git_buf_dispose(&path);
return error;
}
char *git_worktree__read_link(const char *base, const char *file)
{
git_buf path = GIT_BUF_INIT, buf = GIT_BUF_INIT;
GIT_ASSERT_ARG_WITH_RETVAL(base, NULL);
GIT_ASSERT_ARG_WITH_RETVAL(file, NULL);
if (git_buf_joinpath(&path, base, file) < 0)
goto err;
if (git_futils_readbuffer(&buf, path.ptr) < 0)
goto err;
git_buf_dispose(&path);
git_buf_rtrim(&buf);
if (!git_path_is_relative(buf.ptr))
return git_buf_detach(&buf);
if (git_buf_sets(&path, base) < 0)
goto err;
if (git_path_apply_relative(&path, buf.ptr) < 0)
goto err;
git_buf_dispose(&buf);
return git_buf_detach(&path);
err:
git_buf_dispose(&buf);
git_buf_dispose(&path);
return NULL;
}
static int write_wtfile(const char *base, const char *file, const git_buf *buf)
{
git_buf path = GIT_BUF_INIT;
int err;
GIT_ASSERT_ARG(base);
GIT_ASSERT_ARG(file);
GIT_ASSERT_ARG(buf);
if ((err = git_buf_joinpath(&path, base, file)) < 0)
goto out;
if ((err = git_futils_writebuffer(buf, path.ptr, O_CREAT|O_EXCL|O_WRONLY, 0644)) < 0)
goto out;
out:
git_buf_dispose(&path);
return err;
}
static int open_worktree_dir(git_worktree **out, const char *parent, const char *dir, const char *name)
{
git_buf gitdir = GIT_BUF_INIT;
git_worktree *wt = NULL;
int error = 0;
if (!is_worktree_dir(dir)) {
error = -1;
goto out;
}
if ((error = git_path_validate_workdir(NULL, dir)) < 0)
goto out;
if ((wt = git__calloc(1, sizeof(*wt))) == NULL) {
error = -1;
goto out;
}
if ((wt->name = git__strdup(name)) == NULL ||
(wt->commondir_path = git_worktree__read_link(dir, "commondir")) == NULL ||
(wt->gitlink_path = git_worktree__read_link(dir, "gitdir")) == NULL ||
(parent && (wt->parent_path = git__strdup(parent)) == NULL) ||
(wt->worktree_path = git_path_dirname(wt->gitlink_path)) == NULL) {
error = -1;
goto out;
}
if ((error = git_path_prettify_dir(&gitdir, dir, NULL)) < 0)
goto out;
wt->gitdir_path = git_buf_detach(&gitdir);
if ((error = git_worktree_is_locked(NULL, wt)) < 0)
goto out;
wt->locked = !!error;
error = 0;
*out = wt;
out:
if (error)
git_worktree_free(wt);
git_buf_dispose(&gitdir);
return error;
}
int git_worktree_lookup(git_worktree **out, git_repository *repo, const char *name)
{
git_buf path = GIT_BUF_INIT;
git_worktree *wt = NULL;
int error;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
*out = NULL;
if ((error = git_buf_join3(&path, '/', repo->commondir, "worktrees", name)) < 0)
goto out;
if ((error = (open_worktree_dir(out, git_repository_workdir(repo), path.ptr, name))) < 0)
goto out;
out:
git_buf_dispose(&path);
if (error)
git_worktree_free(wt);
return error;
}
int git_worktree_open_from_repository(git_worktree **out, git_repository *repo)
{
git_buf parent = GIT_BUF_INIT;
const char *gitdir, *commondir;
char *name = NULL;
int error = 0;
if (!git_repository_is_worktree(repo)) {
git_error_set(GIT_ERROR_WORKTREE, "cannot open worktree of a non-worktree repo");
error = -1;
goto out;
}
gitdir = git_repository_path(repo);
commondir = git_repository_commondir(repo);
if ((error = git_path_prettify_dir(&parent, "..", commondir)) < 0)
goto out;
/* The name is defined by the last component in '.git/worktree/%s' */
name = git_path_basename(gitdir);
if ((error = open_worktree_dir(out, parent.ptr, gitdir, name)) < 0)
goto out;
out:
git__free(name);
git_buf_dispose(&parent);
return error;
}
void git_worktree_free(git_worktree *wt)
{
if (!wt)
return;
git__free(wt->commondir_path);
git__free(wt->worktree_path);
git__free(wt->gitlink_path);
git__free(wt->gitdir_path);
git__free(wt->parent_path);
git__free(wt->name);
git__free(wt);
}
int git_worktree_validate(const git_worktree *wt)
{
GIT_ASSERT_ARG(wt);
if (!is_worktree_dir(wt->gitdir_path)) {
git_error_set(GIT_ERROR_WORKTREE,
"worktree gitdir ('%s') is not valid",
wt->gitlink_path);
return GIT_ERROR;
}
if (wt->parent_path && !git_path_exists(wt->parent_path)) {
git_error_set(GIT_ERROR_WORKTREE,
"worktree parent directory ('%s') does not exist ",
wt->parent_path);
return GIT_ERROR;
}
if (!git_path_exists(wt->commondir_path)) {
git_error_set(GIT_ERROR_WORKTREE,
"worktree common directory ('%s') does not exist ",
wt->commondir_path);
return GIT_ERROR;
}
if (!git_path_exists(wt->worktree_path)) {
git_error_set(GIT_ERROR_WORKTREE,
"worktree directory '%s' does not exist",
wt->worktree_path);
return GIT_ERROR;
}
return 0;
}
int git_worktree_add_options_init(git_worktree_add_options *opts,
unsigned int version)
{
GIT_INIT_STRUCTURE_FROM_TEMPLATE(opts, version,
git_worktree_add_options, GIT_WORKTREE_ADD_OPTIONS_INIT);
return 0;
}
#ifndef GIT_DEPRECATE_HARD
int git_worktree_add_init_options(git_worktree_add_options *opts,
unsigned int version)
{
return git_worktree_add_options_init(opts, version);
}
#endif
int git_worktree_add(git_worktree **out, git_repository *repo,
const char *name, const char *worktree,
const git_worktree_add_options *opts)
{
git_buf gitdir = GIT_BUF_INIT, wddir = GIT_BUF_INIT, buf = GIT_BUF_INIT;
git_reference *ref = NULL, *head = NULL;
git_commit *commit = NULL;
git_repository *wt = NULL;
git_checkout_options coopts = GIT_CHECKOUT_OPTIONS_INIT;
git_worktree_add_options wtopts = GIT_WORKTREE_ADD_OPTIONS_INIT;
int err;
GIT_ERROR_CHECK_VERSION(
opts, GIT_WORKTREE_ADD_OPTIONS_VERSION, "git_worktree_add_options");
if (opts)
memcpy(&wtopts, opts, sizeof(wtopts));
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
GIT_ASSERT_ARG(worktree);
*out = NULL;
if (wtopts.ref) {
if (!git_reference_is_branch(wtopts.ref)) {
git_error_set(GIT_ERROR_WORKTREE, "reference is not a branch");
err = -1;
goto out;
}
if (git_branch_is_checked_out(wtopts.ref)) {
git_error_set(GIT_ERROR_WORKTREE, "reference is already checked out");
err = -1;
goto out;
}
}
/* Create gitdir directory ".git/worktrees/<name>" */
if ((err = git_buf_joinpath(&gitdir, repo->commondir, "worktrees")) < 0)
goto out;
if (!git_path_exists(gitdir.ptr))
if ((err = git_futils_mkdir(gitdir.ptr, 0755, GIT_MKDIR_EXCL)) < 0)
goto out;
if ((err = git_buf_joinpath(&gitdir, gitdir.ptr, name)) < 0)
goto out;
if ((err = git_futils_mkdir(gitdir.ptr, 0755, GIT_MKDIR_EXCL)) < 0)
goto out;
if ((err = git_path_prettify_dir(&gitdir, gitdir.ptr, NULL)) < 0)
goto out;
/* Create worktree work dir */
if ((err = git_futils_mkdir(worktree, 0755, GIT_MKDIR_EXCL)) < 0)
goto out;
if ((err = git_path_prettify_dir(&wddir, worktree, NULL)) < 0)
goto out;
if (wtopts.lock) {
int fd;
if ((err = git_buf_joinpath(&buf, gitdir.ptr, "locked")) < 0)
goto out;
if ((fd = p_creat(buf.ptr, 0644)) < 0) {
err = fd;
goto out;
}
p_close(fd);
git_buf_clear(&buf);
}
/* Create worktree .git file */
if ((err = git_buf_printf(&buf, "gitdir: %s\n", gitdir.ptr)) < 0)
goto out;
if ((err = write_wtfile(wddir.ptr, ".git", &buf)) < 0)
goto out;
/* Create gitdir files */
if ((err = git_path_prettify_dir(&buf, repo->commondir, NULL) < 0)
|| (err = git_buf_putc(&buf, '\n')) < 0
|| (err = write_wtfile(gitdir.ptr, "commondir", &buf)) < 0)
goto out;
if ((err = git_buf_joinpath(&buf, wddir.ptr, ".git")) < 0
|| (err = git_buf_putc(&buf, '\n')) < 0
|| (err = write_wtfile(gitdir.ptr, "gitdir", &buf)) < 0)
goto out;
/* Set up worktree reference */
if (wtopts.ref) {
if ((err = git_reference_dup(&ref, wtopts.ref)) < 0)
goto out;
} else {
if ((err = git_repository_head(&head, repo)) < 0)
goto out;
if ((err = git_commit_lookup(&commit, repo, &head->target.oid)) < 0)
goto out;
if ((err = git_branch_create(&ref, repo, name, commit, false)) < 0)
goto out;
}
/* Set worktree's HEAD */
if ((err = git_repository_create_head(gitdir.ptr, git_reference_name(ref))) < 0)
goto out;
if ((err = git_repository_open(&wt, wddir.ptr)) < 0)
goto out;
/* Checkout worktree's HEAD */
coopts.checkout_strategy = GIT_CHECKOUT_FORCE;
if ((err = git_checkout_head(wt, &coopts)) < 0)
goto out;
/* Load result */
if ((err = git_worktree_lookup(out, repo, name)) < 0)
goto out;
out:
git_buf_dispose(&gitdir);
git_buf_dispose(&wddir);
git_buf_dispose(&buf);
git_reference_free(ref);
git_reference_free(head);
git_commit_free(commit);
git_repository_free(wt);
return err;
}
int git_worktree_lock(git_worktree *wt, const char *reason)
{
git_buf buf = GIT_BUF_INIT, path = GIT_BUF_INIT;
int error;
GIT_ASSERT_ARG(wt);
if ((error = git_worktree_is_locked(NULL, wt)) < 0)
goto out;
if (error) {
error = GIT_ELOCKED;
goto out;
}
if ((error = git_buf_joinpath(&path, wt->gitdir_path, "locked")) < 0)
goto out;
if (reason)
git_buf_attach_notowned(&buf, reason, strlen(reason));
if ((error = git_futils_writebuffer(&buf, path.ptr, O_CREAT|O_EXCL|O_WRONLY, 0644)) < 0)
goto out;
wt->locked = 1;
out:
git_buf_dispose(&path);
return error;
}
int git_worktree_unlock(git_worktree *wt)
{
git_buf path = GIT_BUF_INIT;
int error;
GIT_ASSERT_ARG(wt);
if ((error = git_worktree_is_locked(NULL, wt)) < 0)
return error;
if (!error)
return 1;
if (git_buf_joinpath(&path, wt->gitdir_path, "locked") < 0)
return -1;
if (p_unlink(path.ptr) != 0) {
git_buf_dispose(&path);
return -1;
}
wt->locked = 0;
git_buf_dispose(&path);
return 0;
}
int git_worktree_is_locked(git_buf *reason, const git_worktree *wt)
{
git_buf path = GIT_BUF_INIT;
int error, locked;
GIT_ASSERT_ARG(wt);
if (reason)
git_buf_clear(reason);
if ((error = git_buf_joinpath(&path, wt->gitdir_path, "locked")) < 0)
goto out;
locked = git_path_exists(path.ptr);
if (locked && reason &&
(error = git_futils_readbuffer(reason, path.ptr)) < 0)
goto out;
error = locked;
out:
git_buf_dispose(&path);
return error;
}
const char *git_worktree_name(const git_worktree *wt)
{
GIT_ASSERT_ARG_WITH_RETVAL(wt, NULL);
return wt->name;
}
const char *git_worktree_path(const git_worktree *wt)
{
GIT_ASSERT_ARG_WITH_RETVAL(wt, NULL);
return wt->worktree_path;
}
int git_worktree_prune_options_init(
git_worktree_prune_options *opts,
unsigned int version)
{
GIT_INIT_STRUCTURE_FROM_TEMPLATE(opts, version,
git_worktree_prune_options, GIT_WORKTREE_PRUNE_OPTIONS_INIT);
return 0;
}
#ifndef GIT_DEPRECATE_HARD
int git_worktree_prune_init_options(git_worktree_prune_options *opts,
unsigned int version)
{
return git_worktree_prune_options_init(opts, version);
}
#endif
int git_worktree_is_prunable(git_worktree *wt,
git_worktree_prune_options *opts)
{
git_worktree_prune_options popts = GIT_WORKTREE_PRUNE_OPTIONS_INIT;
GIT_ERROR_CHECK_VERSION(
opts, GIT_WORKTREE_PRUNE_OPTIONS_VERSION,
"git_worktree_prune_options");
if (opts)
memcpy(&popts, opts, sizeof(popts));
if ((popts.flags & GIT_WORKTREE_PRUNE_LOCKED) == 0) {
git_buf reason = GIT_BUF_INIT;
int error;
if ((error = git_worktree_is_locked(&reason, wt)) < 0)
return error;
if (error) {
if (!reason.size)
git_buf_attach_notowned(&reason, "no reason given", 15);
git_error_set(GIT_ERROR_WORKTREE, "not pruning locked working tree: '%s'", reason.ptr);
git_buf_dispose(&reason);
return 0;
}
}
if ((popts.flags & GIT_WORKTREE_PRUNE_VALID) == 0 &&
git_worktree_validate(wt) == 0) {
git_error_set(GIT_ERROR_WORKTREE, "not pruning valid working tree");
return 0;
}
return 1;
}
int git_worktree_prune(git_worktree *wt,
git_worktree_prune_options *opts)
{
git_worktree_prune_options popts = GIT_WORKTREE_PRUNE_OPTIONS_INIT;
git_buf path = GIT_BUF_INIT;
char *wtpath;
int err;
GIT_ERROR_CHECK_VERSION(
opts, GIT_WORKTREE_PRUNE_OPTIONS_VERSION,
"git_worktree_prune_options");
if (opts)
memcpy(&popts, opts, sizeof(popts));
if (!git_worktree_is_prunable(wt, &popts)) {
err = -1;
goto out;
}
/* Delete gitdir in parent repository */
if ((err = git_buf_join3(&path, '/', wt->commondir_path, "worktrees", wt->name)) < 0)
goto out;
if (!git_path_exists(path.ptr))
{
git_error_set(GIT_ERROR_WORKTREE, "worktree gitdir '%s' does not exist", path.ptr);
err = -1;
goto out;
}
if ((err = git_futils_rmdir_r(path.ptr, NULL, GIT_RMDIR_REMOVE_FILES)) < 0)
goto out;
/* Skip deletion of the actual working tree if it does
* not exist or deletion was not requested */
if ((popts.flags & GIT_WORKTREE_PRUNE_WORKING_TREE) == 0 ||
!git_path_exists(wt->gitlink_path))
{
goto out;
}
if ((wtpath = git_path_dirname(wt->gitlink_path)) == NULL)
goto out;
git_buf_attach(&path, wtpath, 0);
if (!git_path_exists(path.ptr))
{
git_error_set(GIT_ERROR_WORKTREE, "working tree '%s' does not exist", path.ptr);
err = -1;
goto out;
}
if ((err = git_futils_rmdir_r(path.ptr, NULL, GIT_RMDIR_REMOVE_FILES)) < 0)
goto out;
out:
git_buf_dispose(&path);
return err;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/blame.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "blame.h"
#include "git2/commit.h"
#include "git2/revparse.h"
#include "git2/revwalk.h"
#include "git2/tree.h"
#include "git2/diff.h"
#include "git2/blob.h"
#include "git2/signature.h"
#include "git2/mailmap.h"
#include "util.h"
#include "repository.h"
#include "blame_git.h"
static int hunk_byfinalline_search_cmp(const void *key, const void *entry)
{
git_blame_hunk *hunk = (git_blame_hunk*)entry;
size_t lineno = *(size_t*)key;
size_t lines_in_hunk = hunk->lines_in_hunk;
size_t final_start_line_number = hunk->final_start_line_number;
if (lineno < final_start_line_number)
return -1;
if (lineno >= final_start_line_number + lines_in_hunk)
return 1;
return 0;
}
static int paths_cmp(const void *a, const void *b) { return git__strcmp((char*)a, (char*)b); }
static int hunk_cmp(const void *_a, const void *_b)
{
git_blame_hunk *a = (git_blame_hunk*)_a,
*b = (git_blame_hunk*)_b;
if (a->final_start_line_number > b->final_start_line_number)
return 1;
else if (a->final_start_line_number < b->final_start_line_number)
return -1;
else
return 0;
}
static bool hunk_ends_at_or_before_line(git_blame_hunk *hunk, size_t line)
{
return line >= (hunk->final_start_line_number + hunk->lines_in_hunk - 1);
}
static bool hunk_starts_at_or_after_line(git_blame_hunk *hunk, size_t line)
{
return line <= hunk->final_start_line_number;
}
static git_blame_hunk *new_hunk(
size_t start,
size_t lines,
size_t orig_start,
const char *path)
{
git_blame_hunk *hunk = git__calloc(1, sizeof(git_blame_hunk));
if (!hunk) return NULL;
hunk->lines_in_hunk = lines;
hunk->final_start_line_number = start;
hunk->orig_start_line_number = orig_start;
hunk->orig_path = path ? git__strdup(path) : NULL;
return hunk;
}
static void free_hunk(git_blame_hunk *hunk)
{
git__free((void*)hunk->orig_path);
git_signature_free(hunk->final_signature);
git_signature_free(hunk->orig_signature);
git__free(hunk);
}
static git_blame_hunk *dup_hunk(git_blame_hunk *hunk)
{
git_blame_hunk *newhunk = new_hunk(
hunk->final_start_line_number,
hunk->lines_in_hunk,
hunk->orig_start_line_number,
hunk->orig_path);
if (!newhunk)
return NULL;
git_oid_cpy(&newhunk->orig_commit_id, &hunk->orig_commit_id);
git_oid_cpy(&newhunk->final_commit_id, &hunk->final_commit_id);
newhunk->boundary = hunk->boundary;
if (git_signature_dup(&newhunk->final_signature, hunk->final_signature) < 0 ||
git_signature_dup(&newhunk->orig_signature, hunk->orig_signature) < 0) {
free_hunk(newhunk);
return NULL;
}
return newhunk;
}
/* Starting with the hunk that includes start_line, shift all following hunks'
* final_start_line by shift_by lines */
static void shift_hunks_by(git_vector *v, size_t start_line, int shift_by)
{
size_t i;
if (!git_vector_bsearch2(&i, v, hunk_byfinalline_search_cmp, &start_line)) {
for (; i < v->length; i++) {
git_blame_hunk *hunk = (git_blame_hunk*)v->contents[i];
hunk->final_start_line_number += shift_by;
}
}
}
git_blame *git_blame__alloc(
git_repository *repo,
git_blame_options opts,
const char *path)
{
git_blame *gbr = git__calloc(1, sizeof(git_blame));
if (!gbr)
return NULL;
gbr->repository = repo;
gbr->options = opts;
if (git_vector_init(&gbr->hunks, 8, hunk_cmp) < 0 ||
git_vector_init(&gbr->paths, 8, paths_cmp) < 0 ||
(gbr->path = git__strdup(path)) == NULL ||
git_vector_insert(&gbr->paths, git__strdup(path)) < 0)
{
git_blame_free(gbr);
return NULL;
}
if (opts.flags & GIT_BLAME_USE_MAILMAP &&
git_mailmap_from_repository(&gbr->mailmap, repo) < 0) {
git_blame_free(gbr);
return NULL;
}
return gbr;
}
void git_blame_free(git_blame *blame)
{
size_t i;
git_blame_hunk *hunk;
if (!blame) return;
git_vector_foreach(&blame->hunks, i, hunk)
free_hunk(hunk);
git_vector_free(&blame->hunks);
git_vector_free_deep(&blame->paths);
git_array_clear(blame->line_index);
git_mailmap_free(blame->mailmap);
git__free(blame->path);
git_blob_free(blame->final_blob);
git__free(blame);
}
uint32_t git_blame_get_hunk_count(git_blame *blame)
{
GIT_ASSERT_ARG(blame);
return (uint32_t)blame->hunks.length;
}
const git_blame_hunk *git_blame_get_hunk_byindex(git_blame *blame, uint32_t index)
{
GIT_ASSERT_ARG_WITH_RETVAL(blame, NULL);
return (git_blame_hunk*)git_vector_get(&blame->hunks, index);
}
const git_blame_hunk *git_blame_get_hunk_byline(git_blame *blame, size_t lineno)
{
size_t i, new_lineno = lineno;
GIT_ASSERT_ARG_WITH_RETVAL(blame, NULL);
if (!git_vector_bsearch2(&i, &blame->hunks, hunk_byfinalline_search_cmp, &new_lineno)) {
return git_blame_get_hunk_byindex(blame, (uint32_t)i);
}
return NULL;
}
static int normalize_options(
git_blame_options *out,
const git_blame_options *in,
git_repository *repo)
{
git_blame_options dummy = GIT_BLAME_OPTIONS_INIT;
if (!in) in = &dummy;
memcpy(out, in, sizeof(git_blame_options));
/* No newest_commit => HEAD */
if (git_oid_is_zero(&out->newest_commit)) {
if (git_reference_name_to_id(&out->newest_commit, repo, "HEAD") < 0) {
return -1;
}
}
/* min_line 0 really means 1 */
if (!out->min_line) out->min_line = 1;
/* max_line 0 really means N, but we don't know N yet */
/* Fix up option implications */
if (out->flags & GIT_BLAME_TRACK_COPIES_ANY_COMMIT_COPIES)
out->flags |= GIT_BLAME_TRACK_COPIES_SAME_COMMIT_COPIES;
if (out->flags & GIT_BLAME_TRACK_COPIES_SAME_COMMIT_COPIES)
out->flags |= GIT_BLAME_TRACK_COPIES_SAME_COMMIT_MOVES;
if (out->flags & GIT_BLAME_TRACK_COPIES_SAME_COMMIT_MOVES)
out->flags |= GIT_BLAME_TRACK_COPIES_SAME_FILE;
return 0;
}
static git_blame_hunk *split_hunk_in_vector(
git_vector *vec,
git_blame_hunk *hunk,
size_t rel_line,
bool return_new)
{
size_t new_line_count;
git_blame_hunk *nh;
/* Don't split if already at a boundary */
if (rel_line <= 0 ||
rel_line >= hunk->lines_in_hunk)
{
return hunk;
}
new_line_count = hunk->lines_in_hunk - rel_line;
nh = new_hunk(hunk->final_start_line_number + rel_line, new_line_count,
hunk->orig_start_line_number + rel_line, hunk->orig_path);
if (!nh)
return NULL;
git_oid_cpy(&nh->final_commit_id, &hunk->final_commit_id);
git_oid_cpy(&nh->orig_commit_id, &hunk->orig_commit_id);
/* Adjust hunk that was split */
hunk->lines_in_hunk -= new_line_count;
git_vector_insert_sorted(vec, nh, NULL);
{
git_blame_hunk *ret = return_new ? nh : hunk;
return ret;
}
}
/*
* Construct a list of char indices for where lines begin
* Adapted from core git:
* https://github.com/gitster/git/blob/be5c9fb9049ed470e7005f159bb923a5f4de1309/builtin/blame.c#L1760-L1789
*/
static int index_blob_lines(git_blame *blame)
{
const char *buf = blame->final_buf;
size_t len = blame->final_buf_size;
int num = 0, incomplete = 0, bol = 1;
size_t *i;
if (len && buf[len-1] != '\n')
incomplete++; /* incomplete line at the end */
while (len--) {
if (bol) {
i = git_array_alloc(blame->line_index);
GIT_ERROR_CHECK_ALLOC(i);
*i = buf - blame->final_buf;
bol = 0;
}
if (*buf++ == '\n') {
num++;
bol = 1;
}
}
i = git_array_alloc(blame->line_index);
GIT_ERROR_CHECK_ALLOC(i);
*i = buf - blame->final_buf;
blame->num_lines = num + incomplete;
return blame->num_lines;
}
static git_blame_hunk *hunk_from_entry(git_blame__entry *e, git_blame *blame)
{
git_blame_hunk *h = new_hunk(
e->lno+1, e->num_lines, e->s_lno+1, e->suspect->path);
if (!h)
return NULL;
git_oid_cpy(&h->final_commit_id, git_commit_id(e->suspect->commit));
git_oid_cpy(&h->orig_commit_id, git_commit_id(e->suspect->commit));
git_commit_author_with_mailmap(
&h->final_signature, e->suspect->commit, blame->mailmap);
git_signature_dup(&h->orig_signature, h->final_signature);
h->boundary = e->is_boundary ? 1 : 0;
return h;
}
static int load_blob(git_blame *blame)
{
int error;
if (blame->final_blob) return 0;
error = git_commit_lookup(&blame->final, blame->repository, &blame->options.newest_commit);
if (error < 0)
goto cleanup;
error = git_object_lookup_bypath((git_object**)&blame->final_blob,
(git_object*)blame->final, blame->path, GIT_OBJECT_BLOB);
cleanup:
return error;
}
static int blame_internal(git_blame *blame)
{
int error;
git_blame__entry *ent = NULL;
git_blame__origin *o;
if ((error = load_blob(blame)) < 0 ||
(error = git_blame__get_origin(&o, blame, blame->final, blame->path)) < 0)
goto cleanup;
if (git_blob_rawsize(blame->final_blob) > SIZE_MAX) {
git_error_set(GIT_ERROR_NOMEMORY, "blob is too large to blame");
error = -1;
goto cleanup;
}
blame->final_buf = git_blob_rawcontent(blame->final_blob);
blame->final_buf_size = (size_t)git_blob_rawsize(blame->final_blob);
ent = git__calloc(1, sizeof(git_blame__entry));
GIT_ERROR_CHECK_ALLOC(ent);
ent->num_lines = index_blob_lines(blame);
ent->lno = blame->options.min_line - 1;
ent->num_lines = ent->num_lines - blame->options.min_line + 1;
if (blame->options.max_line > 0)
ent->num_lines = blame->options.max_line - blame->options.min_line + 1;
ent->s_lno = ent->lno;
ent->suspect = o;
blame->ent = ent;
error = git_blame__like_git(blame, blame->options.flags);
cleanup:
for (ent = blame->ent; ent; ) {
git_blame__entry *e = ent->next;
git_blame_hunk *h = hunk_from_entry(ent, blame);
git_vector_insert(&blame->hunks, h);
git_blame__free_entry(ent);
ent = e;
}
return error;
}
/*******************************************************************************
* File blaming
******************************************************************************/
int git_blame_file(
git_blame **out,
git_repository *repo,
const char *path,
git_blame_options *options)
{
int error = -1;
git_blame_options normOptions = GIT_BLAME_OPTIONS_INIT;
git_blame *blame = NULL;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(path);
if ((error = normalize_options(&normOptions, options, repo)) < 0)
goto on_error;
blame = git_blame__alloc(repo, normOptions, path);
GIT_ERROR_CHECK_ALLOC(blame);
if ((error = load_blob(blame)) < 0)
goto on_error;
if ((error = blame_internal(blame)) < 0)
goto on_error;
*out = blame;
return 0;
on_error:
git_blame_free(blame);
return error;
}
/*******************************************************************************
* Buffer blaming
*******************************************************************************/
static bool hunk_is_bufferblame(git_blame_hunk *hunk)
{
return hunk && git_oid_is_zero(&hunk->final_commit_id);
}
static int buffer_hunk_cb(
const git_diff_delta *delta,
const git_diff_hunk *hunk,
void *payload)
{
git_blame *blame = (git_blame*)payload;
uint32_t wedge_line;
GIT_UNUSED(delta);
wedge_line = (hunk->old_lines == 0) ? hunk->new_start : hunk->old_start;
blame->current_diff_line = wedge_line;
blame->current_hunk = (git_blame_hunk*)git_blame_get_hunk_byline(blame, wedge_line);
if (!blame->current_hunk) {
/* Line added at the end of the file */
blame->current_hunk = new_hunk(wedge_line, 0, wedge_line, blame->path);
GIT_ERROR_CHECK_ALLOC(blame->current_hunk);
git_vector_insert(&blame->hunks, blame->current_hunk);
} else if (!hunk_starts_at_or_after_line(blame->current_hunk, wedge_line)){
/* If this hunk doesn't start between existing hunks, split a hunk up so it does */
blame->current_hunk = split_hunk_in_vector(&blame->hunks, blame->current_hunk,
wedge_line - blame->current_hunk->orig_start_line_number, true);
GIT_ERROR_CHECK_ALLOC(blame->current_hunk);
}
return 0;
}
static int ptrs_equal_cmp(const void *a, const void *b) { return a<b ? -1 : a>b ? 1 : 0; }
static int buffer_line_cb(
const git_diff_delta *delta,
const git_diff_hunk *hunk,
const git_diff_line *line,
void *payload)
{
git_blame *blame = (git_blame*)payload;
GIT_UNUSED(delta);
GIT_UNUSED(hunk);
GIT_UNUSED(line);
if (line->origin == GIT_DIFF_LINE_ADDITION) {
if (hunk_is_bufferblame(blame->current_hunk) &&
hunk_ends_at_or_before_line(blame->current_hunk, blame->current_diff_line)) {
/* Append to the current buffer-blame hunk */
blame->current_hunk->lines_in_hunk++;
shift_hunks_by(&blame->hunks, blame->current_diff_line+1, 1);
} else {
/* Create a new buffer-blame hunk with this line */
shift_hunks_by(&blame->hunks, blame->current_diff_line, 1);
blame->current_hunk = new_hunk(blame->current_diff_line, 1, 0, blame->path);
GIT_ERROR_CHECK_ALLOC(blame->current_hunk);
git_vector_insert_sorted(&blame->hunks, blame->current_hunk, NULL);
}
blame->current_diff_line++;
}
if (line->origin == GIT_DIFF_LINE_DELETION) {
/* Trim the line from the current hunk; remove it if it's now empty */
size_t shift_base = blame->current_diff_line + blame->current_hunk->lines_in_hunk+1;
if (--(blame->current_hunk->lines_in_hunk) == 0) {
size_t i;
shift_base--;
if (!git_vector_search2(&i, &blame->hunks, ptrs_equal_cmp, blame->current_hunk)) {
git_vector_remove(&blame->hunks, i);
free_hunk(blame->current_hunk);
blame->current_hunk = (git_blame_hunk*)git_blame_get_hunk_byindex(blame, (uint32_t)i);
}
}
shift_hunks_by(&blame->hunks, shift_base, -1);
}
return 0;
}
int git_blame_buffer(
git_blame **out,
git_blame *reference,
const char *buffer,
size_t buffer_len)
{
git_blame *blame;
git_diff_options diffopts = GIT_DIFF_OPTIONS_INIT;
size_t i;
git_blame_hunk *hunk;
diffopts.context_lines = 0;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(reference);
GIT_ASSERT_ARG(buffer && buffer_len);
blame = git_blame__alloc(reference->repository, reference->options, reference->path);
GIT_ERROR_CHECK_ALLOC(blame);
/* Duplicate all of the hunk structures in the reference blame */
git_vector_foreach(&reference->hunks, i, hunk) {
git_blame_hunk *h = dup_hunk(hunk);
GIT_ERROR_CHECK_ALLOC(h);
git_vector_insert(&blame->hunks, h);
}
/* Diff to the reference blob */
git_diff_blob_to_buffer(reference->final_blob, blame->path,
buffer, buffer_len, blame->path, &diffopts,
NULL, NULL, buffer_hunk_cb, buffer_line_cb, blame);
*out = blame;
return 0;
}
int git_blame_options_init(git_blame_options *opts, unsigned int version)
{
GIT_INIT_STRUCTURE_FROM_TEMPLATE(
opts, version, git_blame_options, GIT_BLAME_OPTIONS_INIT);
return 0;
}
#ifndef GIT_DEPRECATE_HARD
int git_blame_init_options(git_blame_options *opts, unsigned int version)
{
return git_blame_options_init(opts, version);
}
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/map.h
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_map_h__
#define INCLUDE_map_h__
#include "common.h"
/* p_mmap() prot values */
#define GIT_PROT_NONE 0x0
#define GIT_PROT_READ 0x1
#define GIT_PROT_WRITE 0x2
#define GIT_PROT_EXEC 0x4
/* git__mmmap() flags values */
#define GIT_MAP_FILE 0
#define GIT_MAP_SHARED 1
#define GIT_MAP_PRIVATE 2
#define GIT_MAP_TYPE 0xf
#define GIT_MAP_FIXED 0x10
#ifdef __amigaos4__
#define MAP_FAILED 0
#endif
typedef struct { /* memory mapped buffer */
void *data; /* data bytes */
size_t len; /* data length */
#ifdef GIT_WIN32
HANDLE fmh; /* file mapping handle */
#endif
} git_map;
#define GIT_MMAP_VALIDATE(out, len, prot, flags) do { \
GIT_ASSERT(out != NULL && len > 0); \
GIT_ASSERT((prot & GIT_PROT_WRITE) || (prot & GIT_PROT_READ)); \
GIT_ASSERT((flags & GIT_MAP_FIXED) == 0); } while (0)
extern int p_mmap(git_map *out, size_t len, int prot, int flags, int fd, off64_t offset);
extern int p_munmap(git_map *map);
#endif
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/reflog.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "reflog.h"
#include "repository.h"
#include "filebuf.h"
#include "signature.h"
#include "refdb.h"
#include "git2/sys/refdb_backend.h"
#include "git2/sys/reflog.h"
void git_reflog_entry__free(git_reflog_entry *entry)
{
git_signature_free(entry->committer);
git__free(entry->msg);
git__free(entry);
}
void git_reflog_free(git_reflog *reflog)
{
size_t i;
git_reflog_entry *entry;
if (reflog == NULL)
return;
if (reflog->db)
GIT_REFCOUNT_DEC(reflog->db, git_refdb__free);
for (i=0; i < reflog->entries.length; i++) {
entry = git_vector_get(&reflog->entries, i);
git_reflog_entry__free(entry);
}
git_vector_free(&reflog->entries);
git__free(reflog->ref_name);
git__free(reflog);
}
int git_reflog_read(git_reflog **reflog, git_repository *repo, const char *name)
{
git_refdb *refdb;
int error;
GIT_ASSERT_ARG(reflog);
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
if ((error = git_repository_refdb__weakptr(&refdb, repo)) < 0)
return error;
return git_refdb_reflog_read(reflog, refdb, name);
}
int git_reflog_write(git_reflog *reflog)
{
git_refdb *db;
GIT_ASSERT_ARG(reflog);
GIT_ASSERT_ARG(reflog->db);
db = reflog->db;
return db->backend->reflog_write(db->backend, reflog);
}
int git_reflog_append(git_reflog *reflog, const git_oid *new_oid, const git_signature *committer, const char *msg)
{
const git_reflog_entry *previous;
git_reflog_entry *entry;
GIT_ASSERT_ARG(reflog);
GIT_ASSERT_ARG(new_oid);
GIT_ASSERT_ARG(committer);
entry = git__calloc(1, sizeof(git_reflog_entry));
GIT_ERROR_CHECK_ALLOC(entry);
if ((git_signature_dup(&entry->committer, committer)) < 0)
goto cleanup;
if (msg != NULL) {
size_t i, msglen = strlen(msg);
if ((entry->msg = git__strndup(msg, msglen)) == NULL)
goto cleanup;
/*
* Replace all newlines with spaces, except for
* the final trailing newline.
*/
for (i = 0; i < msglen; i++)
if (entry->msg[i] == '\n')
entry->msg[i] = ' ';
}
previous = git_reflog_entry_byindex(reflog, 0);
if (previous == NULL)
git_oid_fromstr(&entry->oid_old, GIT_OID_HEX_ZERO);
else
git_oid_cpy(&entry->oid_old, &previous->oid_cur);
git_oid_cpy(&entry->oid_cur, new_oid);
if (git_vector_insert(&reflog->entries, entry) < 0)
goto cleanup;
return 0;
cleanup:
git_reflog_entry__free(entry);
return -1;
}
int git_reflog_rename(git_repository *repo, const char *old_name, const char *new_name)
{
git_refdb *refdb;
int error;
if ((error = git_repository_refdb__weakptr(&refdb, repo)) < 0)
return -1;
return refdb->backend->reflog_rename(refdb->backend, old_name, new_name);
}
int git_reflog_delete(git_repository *repo, const char *name)
{
git_refdb *refdb;
int error;
if ((error = git_repository_refdb__weakptr(&refdb, repo)) < 0)
return -1;
return refdb->backend->reflog_delete(refdb->backend, name);
}
size_t git_reflog_entrycount(git_reflog *reflog)
{
GIT_ASSERT_ARG_WITH_RETVAL(reflog, 0);
return reflog->entries.length;
}
const git_reflog_entry *git_reflog_entry_byindex(const git_reflog *reflog, size_t idx)
{
GIT_ASSERT_ARG_WITH_RETVAL(reflog, NULL);
if (idx >= reflog->entries.length)
return NULL;
return git_vector_get(
&reflog->entries, reflog_inverse_index(idx, reflog->entries.length));
}
const git_oid *git_reflog_entry_id_old(const git_reflog_entry *entry)
{
GIT_ASSERT_ARG_WITH_RETVAL(entry, NULL);
return &entry->oid_old;
}
const git_oid *git_reflog_entry_id_new(const git_reflog_entry *entry)
{
GIT_ASSERT_ARG_WITH_RETVAL(entry, NULL);
return &entry->oid_cur;
}
const git_signature *git_reflog_entry_committer(const git_reflog_entry *entry)
{
GIT_ASSERT_ARG_WITH_RETVAL(entry, NULL);
return entry->committer;
}
const char *git_reflog_entry_message(const git_reflog_entry *entry)
{
GIT_ASSERT_ARG_WITH_RETVAL(entry, NULL);
return entry->msg;
}
int git_reflog_drop(git_reflog *reflog, size_t idx, int rewrite_previous_entry)
{
size_t entrycount;
git_reflog_entry *entry, *previous;
entrycount = git_reflog_entrycount(reflog);
entry = (git_reflog_entry *)git_reflog_entry_byindex(reflog, idx);
if (entry == NULL) {
git_error_set(GIT_ERROR_REFERENCE, "no reflog entry at index %"PRIuZ, idx);
return GIT_ENOTFOUND;
}
git_reflog_entry__free(entry);
if (git_vector_remove(
&reflog->entries, reflog_inverse_index(idx, entrycount)) < 0)
return -1;
if (!rewrite_previous_entry)
return 0;
/* No need to rewrite anything when removing the most recent entry */
if (idx == 0)
return 0;
/* Have the latest entry just been dropped? */
if (entrycount == 1)
return 0;
entry = (git_reflog_entry *)git_reflog_entry_byindex(reflog, idx - 1);
/* If the oldest entry has just been removed... */
if (idx == entrycount - 1) {
/* ...clear the oid_old member of the "new" oldest entry */
if (git_oid_fromstr(&entry->oid_old, GIT_OID_HEX_ZERO) < 0)
return -1;
return 0;
}
previous = (git_reflog_entry *)git_reflog_entry_byindex(reflog, idx);
git_oid_cpy(&entry->oid_old, &previous->oid_cur);
return 0;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/buffer.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "buffer.h"
#include "posix.h"
#include "git2/buffer.h"
#include <ctype.h>
/* Used as default value for git_buf->ptr so that people can always
* assume ptr is non-NULL and zero terminated even for new git_bufs.
*/
char git_buf__initbuf[1];
char git_buf__oom[1];
#define ENSURE_SIZE(b, d) \
if ((b)->ptr == git_buf__oom || \
((d) > (b)->asize && git_buf_grow((b), (d)) < 0))\
return -1;
int git_buf_init(git_buf *buf, size_t initial_size)
{
buf->asize = 0;
buf->size = 0;
buf->ptr = git_buf__initbuf;
ENSURE_SIZE(buf, initial_size);
return 0;
}
int git_buf_try_grow(
git_buf *buf, size_t target_size, bool mark_oom)
{
char *new_ptr;
size_t new_size;
if (buf->ptr == git_buf__oom)
return -1;
if (buf->asize == 0 && buf->size != 0) {
git_error_set(GIT_ERROR_INVALID, "cannot grow a borrowed buffer");
return GIT_EINVALID;
}
if (!target_size)
target_size = buf->size;
if (target_size <= buf->asize)
return 0;
if (buf->asize == 0) {
new_size = target_size;
new_ptr = NULL;
} else {
new_size = buf->asize;
/*
* Grow the allocated buffer by 1.5 to allow
* re-use of memory holes resulting from the
* realloc. If this is still too small, then just
* use the target size.
*/
if ((new_size = (new_size << 1) - (new_size >> 1)) < target_size)
new_size = target_size;
new_ptr = buf->ptr;
}
/* round allocation up to multiple of 8 */
new_size = (new_size + 7) & ~7;
if (new_size < buf->size) {
if (mark_oom) {
if (buf->ptr && buf->ptr != git_buf__initbuf)
git__free(buf->ptr);
buf->ptr = git_buf__oom;
}
git_error_set_oom();
return -1;
}
new_ptr = git__realloc(new_ptr, new_size);
if (!new_ptr) {
if (mark_oom) {
if (buf->ptr && (buf->ptr != git_buf__initbuf))
git__free(buf->ptr);
buf->ptr = git_buf__oom;
}
return -1;
}
buf->asize = new_size;
buf->ptr = new_ptr;
/* truncate the existing buffer size if necessary */
if (buf->size >= buf->asize)
buf->size = buf->asize - 1;
buf->ptr[buf->size] = '\0';
return 0;
}
int git_buf_grow(git_buf *buffer, size_t target_size)
{
return git_buf_try_grow(buffer, target_size, true);
}
int git_buf_grow_by(git_buf *buffer, size_t additional_size)
{
size_t newsize;
if (GIT_ADD_SIZET_OVERFLOW(&newsize, buffer->size, additional_size)) {
buffer->ptr = git_buf__oom;
return -1;
}
return git_buf_try_grow(buffer, newsize, true);
}
void git_buf_dispose(git_buf *buf)
{
if (!buf) return;
if (buf->asize > 0 && buf->ptr != NULL && buf->ptr != git_buf__oom)
git__free(buf->ptr);
git_buf_init(buf, 0);
}
#ifndef GIT_DEPRECATE_HARD
void git_buf_free(git_buf *buf)
{
git_buf_dispose(buf);
}
#endif
int git_buf_sanitize(git_buf *buf)
{
if (buf->ptr == NULL) {
GIT_ASSERT_ARG(buf->size == 0 && buf->asize == 0);
buf->ptr = git_buf__initbuf;
} else if (buf->asize > buf->size) {
buf->ptr[buf->size] = '\0';
}
return 0;
}
void git_buf_clear(git_buf *buf)
{
buf->size = 0;
if (!buf->ptr) {
buf->ptr = git_buf__initbuf;
buf->asize = 0;
}
if (buf->asize > 0)
buf->ptr[0] = '\0';
}
int git_buf_set(git_buf *buf, const void *data, size_t len)
{
size_t alloclen;
if (len == 0 || data == NULL) {
git_buf_clear(buf);
} else {
if (data != buf->ptr) {
GIT_ERROR_CHECK_ALLOC_ADD(&alloclen, len, 1);
ENSURE_SIZE(buf, alloclen);
memmove(buf->ptr, data, len);
}
buf->size = len;
if (buf->asize > buf->size)
buf->ptr[buf->size] = '\0';
}
return 0;
}
int git_buf_sets(git_buf *buf, const char *string)
{
return git_buf_set(buf, string, string ? strlen(string) : 0);
}
int git_buf_putc(git_buf *buf, char c)
{
size_t new_size;
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, buf->size, 2);
ENSURE_SIZE(buf, new_size);
buf->ptr[buf->size++] = c;
buf->ptr[buf->size] = '\0';
return 0;
}
int git_buf_putcn(git_buf *buf, char c, size_t len)
{
size_t new_size;
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, buf->size, len);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, new_size, 1);
ENSURE_SIZE(buf, new_size);
memset(buf->ptr + buf->size, c, len);
buf->size += len;
buf->ptr[buf->size] = '\0';
return 0;
}
int git_buf_put(git_buf *buf, const char *data, size_t len)
{
if (len) {
size_t new_size;
GIT_ASSERT_ARG(data);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, buf->size, len);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, new_size, 1);
ENSURE_SIZE(buf, new_size);
memmove(buf->ptr + buf->size, data, len);
buf->size += len;
buf->ptr[buf->size] = '\0';
}
return 0;
}
int git_buf_puts(git_buf *buf, const char *string)
{
GIT_ASSERT_ARG(string);
return git_buf_put(buf, string, strlen(string));
}
static const char base64_encode[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
int git_buf_encode_base64(git_buf *buf, const char *data, size_t len)
{
size_t extra = len % 3;
uint8_t *write, a, b, c;
const uint8_t *read = (const uint8_t *)data;
size_t blocks = (len / 3) + !!extra, alloclen;
GIT_ERROR_CHECK_ALLOC_ADD(&blocks, blocks, 1);
GIT_ERROR_CHECK_ALLOC_MULTIPLY(&alloclen, blocks, 4);
GIT_ERROR_CHECK_ALLOC_ADD(&alloclen, alloclen, buf->size);
ENSURE_SIZE(buf, alloclen);
write = (uint8_t *)&buf->ptr[buf->size];
/* convert each run of 3 bytes into 4 output bytes */
for (len -= extra; len > 0; len -= 3) {
a = *read++;
b = *read++;
c = *read++;
*write++ = base64_encode[a >> 2];
*write++ = base64_encode[(a & 0x03) << 4 | b >> 4];
*write++ = base64_encode[(b & 0x0f) << 2 | c >> 6];
*write++ = base64_encode[c & 0x3f];
}
if (extra > 0) {
a = *read++;
b = (extra > 1) ? *read++ : 0;
*write++ = base64_encode[a >> 2];
*write++ = base64_encode[(a & 0x03) << 4 | b >> 4];
*write++ = (extra > 1) ? base64_encode[(b & 0x0f) << 2] : '=';
*write++ = '=';
}
buf->size = ((char *)write) - buf->ptr;
buf->ptr[buf->size] = '\0';
return 0;
}
/* The inverse of base64_encode */
static const int8_t base64_decode[] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, 0, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
int git_buf_decode_base64(git_buf *buf, const char *base64, size_t len)
{
size_t i;
int8_t a, b, c, d;
size_t orig_size = buf->size, new_size;
if (len % 4) {
git_error_set(GIT_ERROR_INVALID, "invalid base64 input");
return -1;
}
GIT_ASSERT_ARG(len % 4 == 0);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, (len / 4 * 3), buf->size);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, new_size, 1);
ENSURE_SIZE(buf, new_size);
for (i = 0; i < len; i += 4) {
if ((a = base64_decode[(unsigned char)base64[i]]) < 0 ||
(b = base64_decode[(unsigned char)base64[i+1]]) < 0 ||
(c = base64_decode[(unsigned char)base64[i+2]]) < 0 ||
(d = base64_decode[(unsigned char)base64[i+3]]) < 0) {
buf->size = orig_size;
buf->ptr[buf->size] = '\0';
git_error_set(GIT_ERROR_INVALID, "invalid base64 input");
return -1;
}
buf->ptr[buf->size++] = ((a << 2) | (b & 0x30) >> 4);
buf->ptr[buf->size++] = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
buf->ptr[buf->size++] = (c & 0x03) << 6 | (d & 0x3f);
}
buf->ptr[buf->size] = '\0';
return 0;
}
static const char base85_encode[] =
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~";
int git_buf_encode_base85(git_buf *buf, const char *data, size_t len)
{
size_t blocks = (len / 4) + !!(len % 4), alloclen;
GIT_ERROR_CHECK_ALLOC_MULTIPLY(&alloclen, blocks, 5);
GIT_ERROR_CHECK_ALLOC_ADD(&alloclen, alloclen, buf->size);
GIT_ERROR_CHECK_ALLOC_ADD(&alloclen, alloclen, 1);
ENSURE_SIZE(buf, alloclen);
while (len) {
uint32_t acc = 0;
char b85[5];
int i;
for (i = 24; i >= 0; i -= 8) {
uint8_t ch = *data++;
acc |= (uint32_t)ch << i;
if (--len == 0)
break;
}
for (i = 4; i >= 0; i--) {
int val = acc % 85;
acc /= 85;
b85[i] = base85_encode[val];
}
for (i = 0; i < 5; i++)
buf->ptr[buf->size++] = b85[i];
}
buf->ptr[buf->size] = '\0';
return 0;
}
/* The inverse of base85_encode */
static const int8_t base85_decode[] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, 63, -1, 64, 65, 66, 67, -1, 68, 69, 70, 71, -1, 72, -1, -1,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -1, 73, 74, 75, 76, 77,
78, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, -1, -1, -1, 79, 80,
81, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 82, 83, 84, 85, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
int git_buf_decode_base85(
git_buf *buf,
const char *base85,
size_t base85_len,
size_t output_len)
{
size_t orig_size = buf->size, new_size;
if (base85_len % 5 ||
output_len > base85_len * 4 / 5) {
git_error_set(GIT_ERROR_INVALID, "invalid base85 input");
return -1;
}
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, output_len, buf->size);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, new_size, 1);
ENSURE_SIZE(buf, new_size);
while (output_len) {
unsigned acc = 0;
int de, cnt = 4;
unsigned char ch;
do {
ch = *base85++;
de = base85_decode[ch];
if (--de < 0)
goto on_error;
acc = acc * 85 + de;
} while (--cnt);
ch = *base85++;
de = base85_decode[ch];
if (--de < 0)
goto on_error;
/* Detect overflow. */
if (0xffffffff / 85 < acc ||
0xffffffff - de < (acc *= 85))
goto on_error;
acc += de;
cnt = (output_len < 4) ? (int)output_len : 4;
output_len -= cnt;
do {
acc = (acc << 8) | (acc >> 24);
buf->ptr[buf->size++] = acc;
} while (--cnt);
}
buf->ptr[buf->size] = 0;
return 0;
on_error:
buf->size = orig_size;
buf->ptr[buf->size] = '\0';
git_error_set(GIT_ERROR_INVALID, "invalid base85 input");
return -1;
}
#define HEX_DECODE(c) ((c | 32) % 39 - 9)
int git_buf_decode_percent(
git_buf *buf,
const char *str,
size_t str_len)
{
size_t str_pos, new_size;
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, buf->size, str_len);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, new_size, 1);
ENSURE_SIZE(buf, new_size);
for (str_pos = 0; str_pos < str_len; buf->size++, str_pos++) {
if (str[str_pos] == '%' &&
str_len > str_pos + 2 &&
isxdigit(str[str_pos + 1]) &&
isxdigit(str[str_pos + 2])) {
buf->ptr[buf->size] = (HEX_DECODE(str[str_pos + 1]) << 4) +
HEX_DECODE(str[str_pos + 2]);
str_pos += 2;
} else {
buf->ptr[buf->size] = str[str_pos];
}
}
buf->ptr[buf->size] = '\0';
return 0;
}
int git_buf_vprintf(git_buf *buf, const char *format, va_list ap)
{
size_t expected_size, new_size;
int len;
GIT_ERROR_CHECK_ALLOC_MULTIPLY(&expected_size, strlen(format), 2);
GIT_ERROR_CHECK_ALLOC_ADD(&expected_size, expected_size, buf->size);
ENSURE_SIZE(buf, expected_size);
while (1) {
va_list args;
va_copy(args, ap);
len = p_vsnprintf(
buf->ptr + buf->size,
buf->asize - buf->size,
format, args
);
va_end(args);
if (len < 0) {
git__free(buf->ptr);
buf->ptr = git_buf__oom;
return -1;
}
if ((size_t)len + 1 <= buf->asize - buf->size) {
buf->size += len;
break;
}
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, buf->size, len);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, new_size, 1);
ENSURE_SIZE(buf, new_size);
}
return 0;
}
int git_buf_printf(git_buf *buf, const char *format, ...)
{
int r;
va_list ap;
va_start(ap, format);
r = git_buf_vprintf(buf, format, ap);
va_end(ap);
return r;
}
int git_buf_copy_cstr(char *data, size_t datasize, const git_buf *buf)
{
size_t copylen;
GIT_ASSERT_ARG(data);
GIT_ASSERT_ARG(datasize);
GIT_ASSERT_ARG(buf);
data[0] = '\0';
if (buf->size == 0 || buf->asize <= 0)
return 0;
copylen = buf->size;
if (copylen > datasize - 1)
copylen = datasize - 1;
memmove(data, buf->ptr, copylen);
data[copylen] = '\0';
return 0;
}
void git_buf_consume_bytes(git_buf *buf, size_t len)
{
git_buf_consume(buf, buf->ptr + len);
}
void git_buf_consume(git_buf *buf, const char *end)
{
if (end > buf->ptr && end <= buf->ptr + buf->size) {
size_t consumed = end - buf->ptr;
memmove(buf->ptr, end, buf->size - consumed);
buf->size -= consumed;
buf->ptr[buf->size] = '\0';
}
}
void git_buf_truncate(git_buf *buf, size_t len)
{
if (len >= buf->size)
return;
buf->size = len;
if (buf->size < buf->asize)
buf->ptr[buf->size] = '\0';
}
void git_buf_shorten(git_buf *buf, size_t amount)
{
if (buf->size > amount)
git_buf_truncate(buf, buf->size - amount);
else
git_buf_clear(buf);
}
void git_buf_truncate_at_char(git_buf *buf, char separator)
{
ssize_t idx = git_buf_find(buf, separator);
if (idx >= 0)
git_buf_truncate(buf, (size_t)idx);
}
void git_buf_rtruncate_at_char(git_buf *buf, char separator)
{
ssize_t idx = git_buf_rfind_next(buf, separator);
git_buf_truncate(buf, idx < 0 ? 0 : (size_t)idx);
}
void git_buf_swap(git_buf *buf_a, git_buf *buf_b)
{
git_buf t = *buf_a;
*buf_a = *buf_b;
*buf_b = t;
}
char *git_buf_detach(git_buf *buf)
{
char *data = buf->ptr;
if (buf->asize == 0 || buf->ptr == git_buf__oom)
return NULL;
git_buf_init(buf, 0);
return data;
}
int git_buf_attach(git_buf *buf, char *ptr, size_t asize)
{
git_buf_dispose(buf);
if (ptr) {
buf->ptr = ptr;
buf->size = strlen(ptr);
if (asize)
buf->asize = (asize < buf->size) ? buf->size + 1 : asize;
else /* pass 0 to fall back on strlen + 1 */
buf->asize = buf->size + 1;
}
ENSURE_SIZE(buf, asize);
return 0;
}
void git_buf_attach_notowned(git_buf *buf, const char *ptr, size_t size)
{
if (git_buf_is_allocated(buf))
git_buf_dispose(buf);
if (!size) {
git_buf_init(buf, 0);
} else {
buf->ptr = (char *)ptr;
buf->asize = 0;
buf->size = size;
}
}
int git_buf_join_n(git_buf *buf, char separator, int nbuf, ...)
{
va_list ap;
int i;
size_t total_size = 0, original_size = buf->size;
char *out, *original = buf->ptr;
if (buf->size > 0 && buf->ptr[buf->size - 1] != separator)
++total_size; /* space for initial separator */
/* Make two passes to avoid multiple reallocation */
va_start(ap, nbuf);
for (i = 0; i < nbuf; ++i) {
const char *segment;
size_t segment_len;
segment = va_arg(ap, const char *);
if (!segment)
continue;
segment_len = strlen(segment);
GIT_ERROR_CHECK_ALLOC_ADD(&total_size, total_size, segment_len);
if (segment_len == 0 || segment[segment_len - 1] != separator)
GIT_ERROR_CHECK_ALLOC_ADD(&total_size, total_size, 1);
}
va_end(ap);
/* expand buffer if needed */
if (total_size == 0)
return 0;
GIT_ERROR_CHECK_ALLOC_ADD(&total_size, total_size, 1);
if (git_buf_grow_by(buf, total_size) < 0)
return -1;
out = buf->ptr + buf->size;
/* append separator to existing buf if needed */
if (buf->size > 0 && out[-1] != separator)
*out++ = separator;
va_start(ap, nbuf);
for (i = 0; i < nbuf; ++i) {
const char *segment;
size_t segment_len;
segment = va_arg(ap, const char *);
if (!segment)
continue;
/* deal with join that references buffer's original content */
if (segment >= original && segment < original + original_size) {
size_t offset = (segment - original);
segment = buf->ptr + offset;
segment_len = original_size - offset;
} else {
segment_len = strlen(segment);
}
/* skip leading separators */
if (out > buf->ptr && out[-1] == separator)
while (segment_len > 0 && *segment == separator) {
segment++;
segment_len--;
}
/* copy over next buffer */
if (segment_len > 0) {
memmove(out, segment, segment_len);
out += segment_len;
}
/* append trailing separator (except for last item) */
if (i < nbuf - 1 && out > buf->ptr && out[-1] != separator)
*out++ = separator;
}
va_end(ap);
/* set size based on num characters actually written */
buf->size = out - buf->ptr;
buf->ptr[buf->size] = '\0';
return 0;
}
int git_buf_join(
git_buf *buf,
char separator,
const char *str_a,
const char *str_b)
{
size_t strlen_a = str_a ? strlen(str_a) : 0;
size_t strlen_b = strlen(str_b);
size_t alloc_len;
int need_sep = 0;
ssize_t offset_a = -1;
/* not safe to have str_b point internally to the buffer */
if (buf->size)
GIT_ASSERT_ARG(str_b < buf->ptr || str_b >= buf->ptr + buf->size);
/* figure out if we need to insert a separator */
if (separator && strlen_a) {
while (*str_b == separator) { str_b++; strlen_b--; }
if (str_a[strlen_a - 1] != separator)
need_sep = 1;
}
/* str_a could be part of the buffer */
if (buf->size && str_a >= buf->ptr && str_a < buf->ptr + buf->size)
offset_a = str_a - buf->ptr;
GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, strlen_a, strlen_b);
GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, alloc_len, need_sep);
GIT_ERROR_CHECK_ALLOC_ADD(&alloc_len, alloc_len, 1);
ENSURE_SIZE(buf, alloc_len);
/* fix up internal pointers */
if (offset_a >= 0)
str_a = buf->ptr + offset_a;
/* do the actual copying */
if (offset_a != 0 && str_a)
memmove(buf->ptr, str_a, strlen_a);
if (need_sep)
buf->ptr[strlen_a] = separator;
memcpy(buf->ptr + strlen_a + need_sep, str_b, strlen_b);
buf->size = strlen_a + strlen_b + need_sep;
buf->ptr[buf->size] = '\0';
return 0;
}
int git_buf_join3(
git_buf *buf,
char separator,
const char *str_a,
const char *str_b,
const char *str_c)
{
size_t len_a = strlen(str_a),
len_b = strlen(str_b),
len_c = strlen(str_c),
len_total;
int sep_a = 0, sep_b = 0;
char *tgt;
/* for this function, disallow pointers into the existing buffer */
GIT_ASSERT(str_a < buf->ptr || str_a >= buf->ptr + buf->size);
GIT_ASSERT(str_b < buf->ptr || str_b >= buf->ptr + buf->size);
GIT_ASSERT(str_c < buf->ptr || str_c >= buf->ptr + buf->size);
if (separator) {
if (len_a > 0) {
while (*str_b == separator) { str_b++; len_b--; }
sep_a = (str_a[len_a - 1] != separator);
}
if (len_a > 0 || len_b > 0)
while (*str_c == separator) { str_c++; len_c--; }
if (len_b > 0)
sep_b = (str_b[len_b - 1] != separator);
}
GIT_ERROR_CHECK_ALLOC_ADD(&len_total, len_a, sep_a);
GIT_ERROR_CHECK_ALLOC_ADD(&len_total, len_total, len_b);
GIT_ERROR_CHECK_ALLOC_ADD(&len_total, len_total, sep_b);
GIT_ERROR_CHECK_ALLOC_ADD(&len_total, len_total, len_c);
GIT_ERROR_CHECK_ALLOC_ADD(&len_total, len_total, 1);
ENSURE_SIZE(buf, len_total);
tgt = buf->ptr;
if (len_a) {
memcpy(tgt, str_a, len_a);
tgt += len_a;
}
if (sep_a)
*tgt++ = separator;
if (len_b) {
memcpy(tgt, str_b, len_b);
tgt += len_b;
}
if (sep_b)
*tgt++ = separator;
if (len_c)
memcpy(tgt, str_c, len_c);
buf->size = len_a + sep_a + len_b + sep_b + len_c;
buf->ptr[buf->size] = '\0';
return 0;
}
void git_buf_rtrim(git_buf *buf)
{
while (buf->size > 0) {
if (!git__isspace(buf->ptr[buf->size - 1]))
break;
buf->size--;
}
if (buf->asize > buf->size)
buf->ptr[buf->size] = '\0';
}
int git_buf_cmp(const git_buf *a, const git_buf *b)
{
int result = memcmp(a->ptr, b->ptr, min(a->size, b->size));
return (result != 0) ? result :
(a->size < b->size) ? -1 : (a->size > b->size) ? 1 : 0;
}
int git_buf_splice(
git_buf *buf,
size_t where,
size_t nb_to_remove,
const char *data,
size_t nb_to_insert)
{
char *splice_loc;
size_t new_size, alloc_size;
GIT_ASSERT(buf);
GIT_ASSERT(where <= buf->size);
GIT_ASSERT(nb_to_remove <= buf->size - where);
splice_loc = buf->ptr + where;
/* Ported from git.git
* https://github.com/git/git/blob/16eed7c/strbuf.c#L159-176
*/
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, (buf->size - nb_to_remove), nb_to_insert);
GIT_ERROR_CHECK_ALLOC_ADD(&alloc_size, new_size, 1);
ENSURE_SIZE(buf, alloc_size);
memmove(splice_loc + nb_to_insert,
splice_loc + nb_to_remove,
buf->size - where - nb_to_remove);
memcpy(splice_loc, data, nb_to_insert);
buf->size = new_size;
buf->ptr[buf->size] = '\0';
return 0;
}
/* Quote per http://marc.info/?l=git&m=112927316408690&w=2 */
int git_buf_quote(git_buf *buf)
{
const char whitespace[] = { 'a', 'b', 't', 'n', 'v', 'f', 'r' };
git_buf quoted = GIT_BUF_INIT;
size_t i = 0;
bool quote = false;
int error = 0;
/* walk to the first char that needs quoting */
if (buf->size && buf->ptr[0] == '!')
quote = true;
for (i = 0; !quote && i < buf->size; i++) {
if (buf->ptr[i] == '"' || buf->ptr[i] == '\\' ||
buf->ptr[i] < ' ' || buf->ptr[i] > '~') {
quote = true;
break;
}
}
if (!quote)
goto done;
git_buf_putc("ed, '"');
git_buf_put("ed, buf->ptr, i);
for (; i < buf->size; i++) {
/* whitespace - use the map above, which is ordered by ascii value */
if (buf->ptr[i] >= '\a' && buf->ptr[i] <= '\r') {
git_buf_putc("ed, '\\');
git_buf_putc("ed, whitespace[buf->ptr[i] - '\a']);
}
/* double quote and backslash must be escaped */
else if (buf->ptr[i] == '"' || buf->ptr[i] == '\\') {
git_buf_putc("ed, '\\');
git_buf_putc("ed, buf->ptr[i]);
}
/* escape anything unprintable as octal */
else if (buf->ptr[i] != ' ' &&
(buf->ptr[i] < '!' || buf->ptr[i] > '~')) {
git_buf_printf("ed, "\\%03o", (unsigned char)buf->ptr[i]);
}
/* yay, printable! */
else {
git_buf_putc("ed, buf->ptr[i]);
}
}
git_buf_putc("ed, '"');
if (git_buf_oom("ed)) {
error = -1;
goto done;
}
git_buf_swap("ed, buf);
done:
git_buf_dispose("ed);
return error;
}
/* Unquote per http://marc.info/?l=git&m=112927316408690&w=2 */
int git_buf_unquote(git_buf *buf)
{
size_t i, j;
char ch;
git_buf_rtrim(buf);
if (buf->size < 2 || buf->ptr[0] != '"' || buf->ptr[buf->size-1] != '"')
goto invalid;
for (i = 0, j = 1; j < buf->size-1; i++, j++) {
ch = buf->ptr[j];
if (ch == '\\') {
if (j == buf->size-2)
goto invalid;
ch = buf->ptr[++j];
switch (ch) {
/* \" or \\ simply copy the char in */
case '"': case '\\':
break;
/* add the appropriate escaped char */
case 'a': ch = '\a'; break;
case 'b': ch = '\b'; break;
case 'f': ch = '\f'; break;
case 'n': ch = '\n'; break;
case 'r': ch = '\r'; break;
case 't': ch = '\t'; break;
case 'v': ch = '\v'; break;
/* \xyz digits convert to the char*/
case '0': case '1': case '2': case '3':
if (j == buf->size-3) {
git_error_set(GIT_ERROR_INVALID,
"truncated quoted character \\%c", ch);
return -1;
}
if (buf->ptr[j+1] < '0' || buf->ptr[j+1] > '7' ||
buf->ptr[j+2] < '0' || buf->ptr[j+2] > '7') {
git_error_set(GIT_ERROR_INVALID,
"truncated quoted character \\%c%c%c",
buf->ptr[j], buf->ptr[j+1], buf->ptr[j+2]);
return -1;
}
ch = ((buf->ptr[j] - '0') << 6) |
((buf->ptr[j+1] - '0') << 3) |
(buf->ptr[j+2] - '0');
j += 2;
break;
default:
git_error_set(GIT_ERROR_INVALID, "invalid quoted character \\%c", ch);
return -1;
}
}
buf->ptr[i] = ch;
}
buf->ptr[i] = '\0';
buf->size = i;
return 0;
invalid:
git_error_set(GIT_ERROR_INVALID, "invalid quoted line");
return -1;
}
int git_buf_puts_escaped(
git_buf *buf,
const char *string,
const char *esc_chars,
const char *esc_with)
{
const char *scan;
size_t total = 0, esc_len = strlen(esc_with), count, alloclen;
if (!string)
return 0;
for (scan = string; *scan; ) {
/* count run of non-escaped characters */
count = strcspn(scan, esc_chars);
total += count;
scan += count;
/* count run of escaped characters */
count = strspn(scan, esc_chars);
total += count * (esc_len + 1);
scan += count;
}
GIT_ERROR_CHECK_ALLOC_ADD(&alloclen, total, 1);
if (git_buf_grow_by(buf, alloclen) < 0)
return -1;
for (scan = string; *scan; ) {
count = strcspn(scan, esc_chars);
memmove(buf->ptr + buf->size, scan, count);
scan += count;
buf->size += count;
for (count = strspn(scan, esc_chars); count > 0; --count) {
/* copy escape sequence */
memmove(buf->ptr + buf->size, esc_with, esc_len);
buf->size += esc_len;
/* copy character to be escaped */
buf->ptr[buf->size] = *scan;
buf->size++;
scan++;
}
}
buf->ptr[buf->size] = '\0';
return 0;
}
void git_buf_unescape(git_buf *buf)
{
buf->size = git__unescape(buf->ptr);
}
int git_buf_crlf_to_lf(git_buf *tgt, const git_buf *src)
{
const char *scan = src->ptr;
const char *scan_end = src->ptr + src->size;
const char *next = memchr(scan, '\r', src->size);
size_t new_size;
char *out;
GIT_ASSERT(tgt != src);
if (!next)
return git_buf_set(tgt, src->ptr, src->size);
/* reduce reallocs while in the loop */
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, src->size, 1);
if (git_buf_grow(tgt, new_size) < 0)
return -1;
out = tgt->ptr;
tgt->size = 0;
/* Find the next \r and copy whole chunk up to there to tgt */
for (; next; scan = next + 1, next = memchr(scan, '\r', scan_end - scan)) {
if (next > scan) {
size_t copylen = (size_t)(next - scan);
memcpy(out, scan, copylen);
out += copylen;
}
/* Do not drop \r unless it is followed by \n */
if (next + 1 == scan_end || next[1] != '\n')
*out++ = '\r';
}
/* Copy remaining input into dest */
if (scan < scan_end) {
size_t remaining = (size_t)(scan_end - scan);
memcpy(out, scan, remaining);
out += remaining;
}
tgt->size = (size_t)(out - tgt->ptr);
tgt->ptr[tgt->size] = '\0';
return 0;
}
int git_buf_lf_to_crlf(git_buf *tgt, const git_buf *src)
{
const char *start = src->ptr;
const char *end = start + src->size;
const char *scan = start;
const char *next = memchr(scan, '\n', src->size);
size_t alloclen;
GIT_ASSERT(tgt != src);
if (!next)
return git_buf_set(tgt, src->ptr, src->size);
/* attempt to reduce reallocs while in the loop */
GIT_ERROR_CHECK_ALLOC_ADD(&alloclen, src->size, src->size >> 4);
GIT_ERROR_CHECK_ALLOC_ADD(&alloclen, alloclen, 1);
if (git_buf_grow(tgt, alloclen) < 0)
return -1;
tgt->size = 0;
for (; next; scan = next + 1, next = memchr(scan, '\n', end - scan)) {
size_t copylen = next - scan;
/* if we find mixed line endings, carry on */
if (copylen && next[-1] == '\r')
copylen--;
GIT_ERROR_CHECK_ALLOC_ADD(&alloclen, copylen, 3);
if (git_buf_grow_by(tgt, alloclen) < 0)
return -1;
if (copylen) {
memcpy(tgt->ptr + tgt->size, scan, copylen);
tgt->size += copylen;
}
tgt->ptr[tgt->size++] = '\r';
tgt->ptr[tgt->size++] = '\n';
}
tgt->ptr[tgt->size] = '\0';
return git_buf_put(tgt, scan, end - scan);
}
int git_buf_common_prefix(git_buf *buf, char *const *const strings, size_t count)
{
size_t i;
const char *str, *pfx;
git_buf_clear(buf);
if (!strings || !count)
return 0;
/* initialize common prefix to first string */
if (git_buf_sets(buf, strings[0]) < 0)
return -1;
/* go through the rest of the strings, truncating to shared prefix */
for (i = 1; i < count; ++i) {
for (str = strings[i], pfx = buf->ptr;
*str && *str == *pfx;
str++, pfx++)
/* scanning */;
git_buf_truncate(buf, pfx - buf->ptr);
if (!buf->size)
break;
}
return 0;
}
int git_buf_is_binary(const git_buf *buf)
{
const char *scan = buf->ptr, *end = buf->ptr + buf->size;
git_buf_bom_t bom;
int printable = 0, nonprintable = 0;
scan += git_buf_detect_bom(&bom, buf);
if (bom > GIT_BUF_BOM_UTF8)
return 1;
while (scan < end) {
unsigned char c = *scan++;
/* Printable characters are those above SPACE (0x1F) excluding DEL,
* and including BS, ESC and FF.
*/
if ((c > 0x1F && c != 127) || c == '\b' || c == '\033' || c == '\014')
printable++;
else if (c == '\0')
return true;
else if (!git__isspace(c))
nonprintable++;
}
return ((printable >> 7) < nonprintable);
}
int git_buf_contains_nul(const git_buf *buf)
{
return (memchr(buf->ptr, '\0', buf->size) != NULL);
}
int git_buf_detect_bom(git_buf_bom_t *bom, const git_buf *buf)
{
const char *ptr;
size_t len;
*bom = GIT_BUF_BOM_NONE;
/* need at least 2 bytes to look for any BOM */
if (buf->size < 2)
return 0;
ptr = buf->ptr;
len = buf->size;
switch (*ptr++) {
case 0:
if (len >= 4 && ptr[0] == 0 && ptr[1] == '\xFE' && ptr[2] == '\xFF') {
*bom = GIT_BUF_BOM_UTF32_BE;
return 4;
}
break;
case '\xEF':
if (len >= 3 && ptr[0] == '\xBB' && ptr[1] == '\xBF') {
*bom = GIT_BUF_BOM_UTF8;
return 3;
}
break;
case '\xFE':
if (*ptr == '\xFF') {
*bom = GIT_BUF_BOM_UTF16_BE;
return 2;
}
break;
case '\xFF':
if (*ptr != '\xFE')
break;
if (len >= 4 && ptr[1] == 0 && ptr[2] == 0) {
*bom = GIT_BUF_BOM_UTF32_LE;
return 4;
} else {
*bom = GIT_BUF_BOM_UTF16_LE;
return 2;
}
break;
default:
break;
}
return 0;
}
bool git_buf_gather_text_stats(
git_buf_text_stats *stats, const git_buf *buf, bool skip_bom)
{
const char *scan = buf->ptr, *end = buf->ptr + buf->size;
int skip;
memset(stats, 0, sizeof(*stats));
/* BOM detection */
skip = git_buf_detect_bom(&stats->bom, buf);
if (skip_bom)
scan += skip;
/* Ignore EOF character */
if (buf->size > 0 && end[-1] == '\032')
end--;
/* Counting loop */
while (scan < end) {
unsigned char c = *scan++;
if (c > 0x1F && c != 0x7F)
stats->printable++;
else switch (c) {
case '\0':
stats->nul++;
stats->nonprintable++;
break;
case '\n':
stats->lf++;
break;
case '\r':
stats->cr++;
if (scan < end && *scan == '\n')
stats->crlf++;
break;
case '\t': case '\f': case '\v': case '\b': case 0x1b: /*ESC*/
stats->printable++;
break;
default:
stats->nonprintable++;
break;
}
}
/* Treat files with a bare CR as binary */
return (stats->cr != stats->crlf || stats->nul > 0 ||
((stats->printable >> 7) < stats->nonprintable));
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/repository.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "repository.h"
#include <ctype.h>
#include "git2/object.h"
#include "git2/sys/repository.h"
#include "common.h"
#include "commit.h"
#include "tag.h"
#include "blob.h"
#include "futils.h"
#include "sysdir.h"
#include "filebuf.h"
#include "index.h"
#include "config.h"
#include "refs.h"
#include "filter.h"
#include "odb.h"
#include "refdb.h"
#include "remote.h"
#include "merge.h"
#include "diff_driver.h"
#include "annotated_commit.h"
#include "submodule.h"
#include "worktree.h"
#include "strmap.h"
#ifdef GIT_WIN32
# include "win32/w32_util.h"
#endif
bool git_repository__fsync_gitdir = false;
static const struct {
git_repository_item_t parent;
git_repository_item_t fallback;
const char *name;
bool directory;
} items[] = {
{ GIT_REPOSITORY_ITEM_GITDIR, GIT_REPOSITORY_ITEM__LAST, NULL, true },
{ GIT_REPOSITORY_ITEM_WORKDIR, GIT_REPOSITORY_ITEM__LAST, NULL, true },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM__LAST, NULL, true },
{ GIT_REPOSITORY_ITEM_GITDIR, GIT_REPOSITORY_ITEM__LAST, "index", false },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "objects", true },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "refs", true },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "packed-refs", false },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "remotes", true },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "config", false },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "info", true },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "hooks", true },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "logs", true },
{ GIT_REPOSITORY_ITEM_GITDIR, GIT_REPOSITORY_ITEM__LAST, "modules", true },
{ GIT_REPOSITORY_ITEM_COMMONDIR, GIT_REPOSITORY_ITEM_GITDIR, "worktrees", true }
};
static int check_repositoryformatversion(int *version, git_config *config);
static int check_extensions(git_config *config, int version);
#define GIT_COMMONDIR_FILE "commondir"
#define GIT_GITDIR_FILE "gitdir"
#define GIT_FILE_CONTENT_PREFIX "gitdir:"
#define GIT_BRANCH_DEFAULT "master"
#define GIT_REPO_VERSION 0
#define GIT_REPO_MAX_VERSION 1
git_buf git_repository__reserved_names_win32[] = {
{ DOT_GIT, 0, CONST_STRLEN(DOT_GIT) },
{ GIT_DIR_SHORTNAME, 0, CONST_STRLEN(GIT_DIR_SHORTNAME) }
};
size_t git_repository__reserved_names_win32_len = 2;
git_buf git_repository__reserved_names_posix[] = {
{ DOT_GIT, 0, CONST_STRLEN(DOT_GIT) },
};
size_t git_repository__reserved_names_posix_len = 1;
static void set_odb(git_repository *repo, git_odb *odb)
{
if (odb) {
GIT_REFCOUNT_OWN(odb, repo);
GIT_REFCOUNT_INC(odb);
}
if ((odb = git_atomic_swap(repo->_odb, odb)) != NULL) {
GIT_REFCOUNT_OWN(odb, NULL);
git_odb_free(odb);
}
}
static void set_refdb(git_repository *repo, git_refdb *refdb)
{
if (refdb) {
GIT_REFCOUNT_OWN(refdb, repo);
GIT_REFCOUNT_INC(refdb);
}
if ((refdb = git_atomic_swap(repo->_refdb, refdb)) != NULL) {
GIT_REFCOUNT_OWN(refdb, NULL);
git_refdb_free(refdb);
}
}
static void set_config(git_repository *repo, git_config *config)
{
if (config) {
GIT_REFCOUNT_OWN(config, repo);
GIT_REFCOUNT_INC(config);
}
if ((config = git_atomic_swap(repo->_config, config)) != NULL) {
GIT_REFCOUNT_OWN(config, NULL);
git_config_free(config);
}
git_repository__configmap_lookup_cache_clear(repo);
}
static void set_index(git_repository *repo, git_index *index)
{
if (index) {
GIT_REFCOUNT_OWN(index, repo);
GIT_REFCOUNT_INC(index);
}
if ((index = git_atomic_swap(repo->_index, index)) != NULL) {
GIT_REFCOUNT_OWN(index, NULL);
git_index_free(index);
}
}
int git_repository__cleanup(git_repository *repo)
{
GIT_ASSERT_ARG(repo);
git_repository_submodule_cache_clear(repo);
git_cache_clear(&repo->objects);
git_attr_cache_flush(repo);
set_config(repo, NULL);
set_index(repo, NULL);
set_odb(repo, NULL);
set_refdb(repo, NULL);
return 0;
}
void git_repository_free(git_repository *repo)
{
size_t i;
if (repo == NULL)
return;
git_repository__cleanup(repo);
git_cache_dispose(&repo->objects);
git_diff_driver_registry_free(repo->diff_drivers);
repo->diff_drivers = NULL;
for (i = 0; i < repo->reserved_names.size; i++)
git_buf_dispose(git_array_get(repo->reserved_names, i));
git_array_clear(repo->reserved_names);
git__free(repo->gitlink);
git__free(repo->gitdir);
git__free(repo->commondir);
git__free(repo->workdir);
git__free(repo->namespace);
git__free(repo->ident_name);
git__free(repo->ident_email);
git__memzero(repo, sizeof(*repo));
git__free(repo);
}
/* Check if we have a separate commondir (e.g. we have a worktree) */
static int lookup_commondir(bool *separate, git_buf *commondir, git_buf *repository_path)
{
git_buf common_link = GIT_BUF_INIT;
int error;
/*
* If there's no commondir file, the repository path is the
* common path, but it needs a trailing slash.
*/
if (!git_path_contains_file(repository_path, GIT_COMMONDIR_FILE)) {
if ((error = git_buf_set(commondir, repository_path->ptr, repository_path->size)) == 0)
error = git_path_to_dir(commondir);
*separate = false;
goto done;
}
*separate = true;
if ((error = git_buf_joinpath(&common_link, repository_path->ptr, GIT_COMMONDIR_FILE)) < 0 ||
(error = git_futils_readbuffer(&common_link, common_link.ptr)) < 0)
goto done;
git_buf_rtrim(&common_link);
if (git_path_is_relative(common_link.ptr)) {
if ((error = git_buf_joinpath(commondir, repository_path->ptr, common_link.ptr)) < 0)
goto done;
} else {
git_buf_swap(commondir, &common_link);
}
git_buf_dispose(&common_link);
/* Make sure the commondir path always has a trailing slash */
error = git_path_prettify_dir(commondir, commondir->ptr, NULL);
done:
return error;
}
GIT_INLINE(int) validate_repo_path(git_buf *path)
{
/*
* The longest static path in a repository (or commondir) is the
* packed refs file. (Loose refs may be longer since they
* include the reference name, but will be validated when the
* path is constructed.)
*/
static size_t suffix_len =
CONST_STRLEN("objects/pack/pack-.pack.lock") +
GIT_OID_HEXSZ;
return git_path_validate_filesystem_with_suffix(
path->ptr, path->size, suffix_len);
}
/*
* Git repository open methods
*
* Open a repository object from its path
*/
static int is_valid_repository_path(bool *out, git_buf *repository_path, git_buf *common_path)
{
bool separate_commondir = false;
int error;
*out = false;
if ((error = lookup_commondir(&separate_commondir, common_path, repository_path)) < 0)
return error;
/* Ensure HEAD file exists */
if (git_path_contains_file(repository_path, GIT_HEAD_FILE) == false)
return 0;
/* Check files in common dir */
if (git_path_contains_dir(common_path, GIT_OBJECTS_DIR) == false)
return 0;
if (git_path_contains_dir(common_path, GIT_REFS_DIR) == false)
return 0;
/* Ensure the repo (and commondir) are valid paths */
if ((error = validate_repo_path(common_path)) < 0 ||
(separate_commondir &&
(error = validate_repo_path(repository_path)) < 0))
return error;
*out = true;
return 0;
}
static git_repository *repository_alloc(void)
{
git_repository *repo = git__calloc(1, sizeof(git_repository));
if (repo == NULL ||
git_cache_init(&repo->objects) < 0)
goto on_error;
git_array_init_to_size(repo->reserved_names, 4);
if (!repo->reserved_names.ptr)
goto on_error;
/* set all the entries in the configmap cache to `unset` */
git_repository__configmap_lookup_cache_clear(repo);
return repo;
on_error:
if (repo)
git_cache_dispose(&repo->objects);
git__free(repo);
return NULL;
}
int git_repository_new(git_repository **out)
{
git_repository *repo;
*out = repo = repository_alloc();
GIT_ERROR_CHECK_ALLOC(repo);
repo->is_bare = 1;
repo->is_worktree = 0;
return 0;
}
static int load_config_data(git_repository *repo, const git_config *config)
{
int is_bare;
int err = git_config_get_bool(&is_bare, config, "core.bare");
if (err < 0 && err != GIT_ENOTFOUND)
return err;
/* Try to figure out if it's bare, default to non-bare if it's not set */
if (err != GIT_ENOTFOUND)
repo->is_bare = is_bare && !repo->is_worktree;
else
repo->is_bare = 0;
return 0;
}
static int load_workdir(git_repository *repo, git_config *config, git_buf *parent_path)
{
int error;
git_config_entry *ce;
git_buf worktree = GIT_BUF_INIT;
git_buf path = GIT_BUF_INIT;
if (repo->is_bare)
return 0;
if ((error = git_config__lookup_entry(
&ce, config, "core.worktree", false)) < 0)
return error;
if (repo->is_worktree) {
char *gitlink = git_worktree__read_link(repo->gitdir, GIT_GITDIR_FILE);
if (!gitlink) {
error = -1;
goto cleanup;
}
git_buf_attach(&worktree, gitlink, 0);
if ((git_path_dirname_r(&worktree, worktree.ptr)) < 0 ||
git_path_to_dir(&worktree) < 0) {
error = -1;
goto cleanup;
}
repo->workdir = git_buf_detach(&worktree);
}
else if (ce && ce->value) {
if ((error = git_path_prettify_dir(
&worktree, ce->value, repo->gitdir)) < 0)
goto cleanup;
repo->workdir = git_buf_detach(&worktree);
}
else if (parent_path && git_path_isdir(parent_path->ptr))
repo->workdir = git_buf_detach(parent_path);
else {
if (git_path_dirname_r(&worktree, repo->gitdir) < 0 ||
git_path_to_dir(&worktree) < 0) {
error = -1;
goto cleanup;
}
repo->workdir = git_buf_detach(&worktree);
}
GIT_ERROR_CHECK_ALLOC(repo->workdir);
cleanup:
git_buf_dispose(&path);
git_config_entry_free(ce);
return error;
}
/*
* This function returns furthest offset into path where a ceiling dir
* is found, so we can stop processing the path at that point.
*
* Note: converting this to use git_bufs instead of GIT_PATH_MAX buffers on
* the stack could remove directories name limits, but at the cost of doing
* repeated malloc/frees inside the loop below, so let's not do it now.
*/
static size_t find_ceiling_dir_offset(
const char *path,
const char *ceiling_directories)
{
char buf[GIT_PATH_MAX + 1];
char buf2[GIT_PATH_MAX + 1];
const char *ceil, *sep;
size_t len, max_len = 0, min_len;
GIT_ASSERT_ARG(path);
min_len = (size_t)(git_path_root(path) + 1);
if (ceiling_directories == NULL || min_len == 0)
return min_len;
for (sep = ceil = ceiling_directories; *sep; ceil = sep + 1) {
for (sep = ceil; *sep && *sep != GIT_PATH_LIST_SEPARATOR; sep++);
len = sep - ceil;
if (len == 0 || len >= sizeof(buf) || git_path_root(ceil) == -1)
continue;
strncpy(buf, ceil, len);
buf[len] = '\0';
if (p_realpath(buf, buf2) == NULL)
continue;
len = strlen(buf2);
if (len > 0 && buf2[len-1] == '/')
buf[--len] = '\0';
if (!strncmp(path, buf2, len) &&
(path[len] == '/' || !path[len]) &&
len > max_len)
{
max_len = len;
}
}
return (max_len <= min_len ? min_len : max_len);
}
/*
* Read the contents of `file_path` and set `path_out` to the repo dir that
* it points to. Before calling, set `path_out` to the base directory that
* should be used if the contents of `file_path` are a relative path.
*/
static int read_gitfile(git_buf *path_out, const char *file_path)
{
int error = 0;
git_buf file = GIT_BUF_INIT;
size_t prefix_len = strlen(GIT_FILE_CONTENT_PREFIX);
GIT_ASSERT_ARG(path_out);
GIT_ASSERT_ARG(file_path);
if (git_futils_readbuffer(&file, file_path) < 0)
return -1;
git_buf_rtrim(&file);
/* apparently on Windows, some people use backslashes in paths */
git_path_mkposix(file.ptr);
if (git_buf_len(&file) <= prefix_len ||
memcmp(git_buf_cstr(&file), GIT_FILE_CONTENT_PREFIX, prefix_len) != 0)
{
git_error_set(GIT_ERROR_REPOSITORY,
"the `.git` file at '%s' is malformed", file_path);
error = -1;
}
else if ((error = git_path_dirname_r(path_out, file_path)) >= 0) {
const char *gitlink = git_buf_cstr(&file) + prefix_len;
while (*gitlink && git__isspace(*gitlink)) gitlink++;
error = git_path_prettify_dir(
path_out, gitlink, git_buf_cstr(path_out));
}
git_buf_dispose(&file);
return error;
}
static int find_repo(
git_buf *gitdir_path,
git_buf *workdir_path,
git_buf *gitlink_path,
git_buf *commondir_path,
const char *start_path,
uint32_t flags,
const char *ceiling_dirs)
{
git_buf path = GIT_BUF_INIT;
git_buf repo_link = GIT_BUF_INIT;
git_buf common_link = GIT_BUF_INIT;
struct stat st;
dev_t initial_device = 0;
int min_iterations;
bool in_dot_git, is_valid;
size_t ceiling_offset = 0;
int error;
git_buf_clear(gitdir_path);
error = git_path_prettify(&path, start_path, NULL);
if (error < 0)
return error;
/* in_dot_git toggles each loop:
* /a/b/c/.git, /a/b/c, /a/b/.git, /a/b, /a/.git, /a
* With GIT_REPOSITORY_OPEN_BARE or GIT_REPOSITORY_OPEN_NO_DOTGIT, we
* assume we started with /a/b/c.git and don't append .git the first
* time through.
* min_iterations indicates the number of iterations left before going
* further counts as a search. */
if (flags & (GIT_REPOSITORY_OPEN_BARE | GIT_REPOSITORY_OPEN_NO_DOTGIT)) {
in_dot_git = true;
min_iterations = 1;
} else {
in_dot_git = false;
min_iterations = 2;
}
for (;;) {
if (!(flags & GIT_REPOSITORY_OPEN_NO_DOTGIT)) {
if (!in_dot_git) {
if ((error = git_buf_joinpath(&path, path.ptr, DOT_GIT)) < 0)
goto out;
}
in_dot_git = !in_dot_git;
}
if (p_stat(path.ptr, &st) == 0) {
/* check that we have not crossed device boundaries */
if (initial_device == 0)
initial_device = st.st_dev;
else if (st.st_dev != initial_device &&
!(flags & GIT_REPOSITORY_OPEN_CROSS_FS))
break;
if (S_ISDIR(st.st_mode)) {
if ((error = is_valid_repository_path(&is_valid, &path, &common_link)) < 0)
goto out;
if (is_valid) {
if ((error = git_path_to_dir(&path)) < 0 ||
(error = git_buf_set(gitdir_path, path.ptr, path.size)) < 0)
goto out;
if (gitlink_path)
if ((error = git_buf_attach(gitlink_path, git_worktree__read_link(path.ptr, GIT_GITDIR_FILE), 0)) < 0)
goto out;
if (commondir_path)
git_buf_swap(&common_link, commondir_path);
break;
}
} else if (S_ISREG(st.st_mode) && git__suffixcmp(path.ptr, "/" DOT_GIT) == 0) {
if ((error = read_gitfile(&repo_link, path.ptr)) < 0 ||
(error = is_valid_repository_path(&is_valid, &repo_link, &common_link)) < 0)
goto out;
if (is_valid) {
git_buf_swap(gitdir_path, &repo_link);
if (gitlink_path)
if ((error = git_buf_put(gitlink_path, path.ptr, path.size)) < 0)
goto out;
if (commondir_path)
git_buf_swap(&common_link, commondir_path);
}
break;
}
}
/* Move up one directory. If we're in_dot_git, we'll search the
* parent itself next. If we're !in_dot_git, we'll search .git
* in the parent directory next (added at the top of the loop). */
if ((error = git_path_dirname_r(&path, path.ptr)) < 0)
goto out;
/* Once we've checked the directory (and .git if applicable),
* find the ceiling for a search. */
if (min_iterations && (--min_iterations == 0))
ceiling_offset = find_ceiling_dir_offset(path.ptr, ceiling_dirs);
/* Check if we should stop searching here. */
if (min_iterations == 0 &&
(path.ptr[ceiling_offset] == 0 || (flags & GIT_REPOSITORY_OPEN_NO_SEARCH)))
break;
}
if (workdir_path && !(flags & GIT_REPOSITORY_OPEN_BARE)) {
if (!git_buf_len(gitdir_path))
git_buf_clear(workdir_path);
else if ((error = git_path_dirname_r(workdir_path, path.ptr)) < 0 ||
(error = git_path_to_dir(workdir_path)) < 0)
goto out;
}
/* If we didn't find the repository, and we don't have any other error
* to report, report that. */
if (!git_buf_len(gitdir_path)) {
git_error_set(GIT_ERROR_REPOSITORY, "could not find repository from '%s'", start_path);
error = GIT_ENOTFOUND;
goto out;
}
out:
git_buf_dispose(&path);
git_buf_dispose(&repo_link);
git_buf_dispose(&common_link);
return error;
}
int git_repository_open_bare(
git_repository **repo_ptr,
const char *bare_path)
{
git_buf path = GIT_BUF_INIT, common_path = GIT_BUF_INIT;
git_repository *repo = NULL;
bool is_valid;
int error;
if ((error = git_path_prettify_dir(&path, bare_path, NULL)) < 0 ||
(error = is_valid_repository_path(&is_valid, &path, &common_path)) < 0)
return error;
if (!is_valid) {
git_buf_dispose(&path);
git_buf_dispose(&common_path);
git_error_set(GIT_ERROR_REPOSITORY, "path is not a repository: %s", bare_path);
return GIT_ENOTFOUND;
}
repo = repository_alloc();
GIT_ERROR_CHECK_ALLOC(repo);
repo->gitdir = git_buf_detach(&path);
GIT_ERROR_CHECK_ALLOC(repo->gitdir);
repo->commondir = git_buf_detach(&common_path);
GIT_ERROR_CHECK_ALLOC(repo->commondir);
/* of course we're bare! */
repo->is_bare = 1;
repo->is_worktree = 0;
repo->workdir = NULL;
*repo_ptr = repo;
return 0;
}
static int _git_repository_open_ext_from_env(
git_repository **out,
const char *start_path)
{
git_repository *repo = NULL;
git_index *index = NULL;
git_odb *odb = NULL;
git_buf dir_buf = GIT_BUF_INIT;
git_buf ceiling_dirs_buf = GIT_BUF_INIT;
git_buf across_fs_buf = GIT_BUF_INIT;
git_buf index_file_buf = GIT_BUF_INIT;
git_buf namespace_buf = GIT_BUF_INIT;
git_buf object_dir_buf = GIT_BUF_INIT;
git_buf alts_buf = GIT_BUF_INIT;
git_buf work_tree_buf = GIT_BUF_INIT;
git_buf common_dir_buf = GIT_BUF_INIT;
const char *ceiling_dirs = NULL;
unsigned flags = 0;
int error;
if (!start_path) {
error = git__getenv(&dir_buf, "GIT_DIR");
if (error == GIT_ENOTFOUND) {
git_error_clear();
start_path = ".";
} else if (error < 0)
goto error;
else {
start_path = git_buf_cstr(&dir_buf);
flags |= GIT_REPOSITORY_OPEN_NO_SEARCH;
flags |= GIT_REPOSITORY_OPEN_NO_DOTGIT;
}
}
error = git__getenv(&ceiling_dirs_buf, "GIT_CEILING_DIRECTORIES");
if (error == GIT_ENOTFOUND)
git_error_clear();
else if (error < 0)
goto error;
else
ceiling_dirs = git_buf_cstr(&ceiling_dirs_buf);
error = git__getenv(&across_fs_buf, "GIT_DISCOVERY_ACROSS_FILESYSTEM");
if (error == GIT_ENOTFOUND)
git_error_clear();
else if (error < 0)
goto error;
else {
int across_fs = 0;
error = git_config_parse_bool(&across_fs, git_buf_cstr(&across_fs_buf));
if (error < 0)
goto error;
if (across_fs)
flags |= GIT_REPOSITORY_OPEN_CROSS_FS;
}
error = git__getenv(&index_file_buf, "GIT_INDEX_FILE");
if (error == GIT_ENOTFOUND)
git_error_clear();
else if (error < 0)
goto error;
else {
error = git_index_open(&index, git_buf_cstr(&index_file_buf));
if (error < 0)
goto error;
}
error = git__getenv(&namespace_buf, "GIT_NAMESPACE");
if (error == GIT_ENOTFOUND)
git_error_clear();
else if (error < 0)
goto error;
error = git__getenv(&object_dir_buf, "GIT_OBJECT_DIRECTORY");
if (error == GIT_ENOTFOUND)
git_error_clear();
else if (error < 0)
goto error;
else {
error = git_odb_open(&odb, git_buf_cstr(&object_dir_buf));
if (error < 0)
goto error;
}
error = git__getenv(&work_tree_buf, "GIT_WORK_TREE");
if (error == GIT_ENOTFOUND)
git_error_clear();
else if (error < 0)
goto error;
else {
git_error_set(GIT_ERROR_INVALID, "GIT_WORK_TREE unimplemented");
error = GIT_ERROR;
goto error;
}
error = git__getenv(&work_tree_buf, "GIT_COMMON_DIR");
if (error == GIT_ENOTFOUND)
git_error_clear();
else if (error < 0)
goto error;
else {
git_error_set(GIT_ERROR_INVALID, "GIT_COMMON_DIR unimplemented");
error = GIT_ERROR;
goto error;
}
error = git_repository_open_ext(&repo, start_path, flags, ceiling_dirs);
if (error < 0)
goto error;
if (odb)
git_repository_set_odb(repo, odb);
error = git__getenv(&alts_buf, "GIT_ALTERNATE_OBJECT_DIRECTORIES");
if (error == GIT_ENOTFOUND) {
git_error_clear();
error = 0;
} else if (error < 0)
goto error;
else {
const char *end;
char *alt, *sep;
if (!odb) {
error = git_repository_odb(&odb, repo);
if (error < 0)
goto error;
}
end = git_buf_cstr(&alts_buf) + git_buf_len(&alts_buf);
for (sep = alt = alts_buf.ptr; sep != end; alt = sep+1) {
for (sep = alt; *sep && *sep != GIT_PATH_LIST_SEPARATOR; sep++)
;
if (*sep)
*sep = '\0';
error = git_odb_add_disk_alternate(odb, alt);
if (error < 0)
goto error;
}
}
if (git_buf_len(&namespace_buf)) {
error = git_repository_set_namespace(repo, git_buf_cstr(&namespace_buf));
if (error < 0)
goto error;
}
git_repository_set_index(repo, index);
if (out) {
*out = repo;
goto success;
}
error:
git_repository_free(repo);
success:
git_odb_free(odb);
git_index_free(index);
git_buf_dispose(&common_dir_buf);
git_buf_dispose(&work_tree_buf);
git_buf_dispose(&alts_buf);
git_buf_dispose(&object_dir_buf);
git_buf_dispose(&namespace_buf);
git_buf_dispose(&index_file_buf);
git_buf_dispose(&across_fs_buf);
git_buf_dispose(&ceiling_dirs_buf);
git_buf_dispose(&dir_buf);
return error;
}
static int repo_is_worktree(unsigned *out, const git_repository *repo)
{
git_buf gitdir_link = GIT_BUF_INIT;
int error;
/* Worktrees cannot have the same commondir and gitdir */
if (repo->commondir && repo->gitdir
&& !strcmp(repo->commondir, repo->gitdir)) {
*out = 0;
return 0;
}
if ((error = git_buf_joinpath(&gitdir_link, repo->gitdir, "gitdir")) < 0)
return -1;
/* A 'gitdir' file inside a git directory is currently
* only used when the repository is a working tree. */
*out = !!git_path_exists(gitdir_link.ptr);
git_buf_dispose(&gitdir_link);
return error;
}
int git_repository_open_ext(
git_repository **repo_ptr,
const char *start_path,
unsigned int flags,
const char *ceiling_dirs)
{
int error;
unsigned is_worktree;
git_buf gitdir = GIT_BUF_INIT, workdir = GIT_BUF_INIT,
gitlink = GIT_BUF_INIT, commondir = GIT_BUF_INIT;
git_repository *repo = NULL;
git_config *config = NULL;
int version = 0;
if (flags & GIT_REPOSITORY_OPEN_FROM_ENV)
return _git_repository_open_ext_from_env(repo_ptr, start_path);
if (repo_ptr)
*repo_ptr = NULL;
error = find_repo(
&gitdir, &workdir, &gitlink, &commondir, start_path, flags, ceiling_dirs);
if (error < 0 || !repo_ptr)
goto cleanup;
repo = repository_alloc();
GIT_ERROR_CHECK_ALLOC(repo);
repo->gitdir = git_buf_detach(&gitdir);
GIT_ERROR_CHECK_ALLOC(repo->gitdir);
if (gitlink.size) {
repo->gitlink = git_buf_detach(&gitlink);
GIT_ERROR_CHECK_ALLOC(repo->gitlink);
}
if (commondir.size) {
repo->commondir = git_buf_detach(&commondir);
GIT_ERROR_CHECK_ALLOC(repo->commondir);
}
if ((error = repo_is_worktree(&is_worktree, repo)) < 0)
goto cleanup;
repo->is_worktree = is_worktree;
/*
* We'd like to have the config, but git doesn't particularly
* care if it's not there, so we need to deal with that.
*/
error = git_repository_config_snapshot(&config, repo);
if (error < 0 && error != GIT_ENOTFOUND)
goto cleanup;
if (config && (error = check_repositoryformatversion(&version, config)) < 0)
goto cleanup;
if ((error = check_extensions(config, version)) < 0)
goto cleanup;
if ((flags & GIT_REPOSITORY_OPEN_BARE) != 0)
repo->is_bare = 1;
else {
if (config &&
((error = load_config_data(repo, config)) < 0 ||
(error = load_workdir(repo, config, &workdir)) < 0))
goto cleanup;
}
cleanup:
git_buf_dispose(&gitdir);
git_buf_dispose(&workdir);
git_buf_dispose(&gitlink);
git_buf_dispose(&commondir);
git_config_free(config);
if (error < 0)
git_repository_free(repo);
else if (repo_ptr)
*repo_ptr = repo;
return error;
}
int git_repository_open(git_repository **repo_out, const char *path)
{
return git_repository_open_ext(
repo_out, path, GIT_REPOSITORY_OPEN_NO_SEARCH, NULL);
}
int git_repository_open_from_worktree(git_repository **repo_out, git_worktree *wt)
{
git_buf path = GIT_BUF_INIT;
git_repository *repo = NULL;
size_t len;
int err;
GIT_ASSERT_ARG(repo_out);
GIT_ASSERT_ARG(wt);
*repo_out = NULL;
len = strlen(wt->gitlink_path);
if (len <= 4 || strcasecmp(wt->gitlink_path + len - 4, ".git")) {
err = -1;
goto out;
}
if ((err = git_buf_set(&path, wt->gitlink_path, len - 4)) < 0)
goto out;
if ((err = git_repository_open(&repo, path.ptr)) < 0)
goto out;
*repo_out = repo;
out:
git_buf_dispose(&path);
return err;
}
int git_repository_wrap_odb(git_repository **repo_out, git_odb *odb)
{
git_repository *repo;
repo = repository_alloc();
GIT_ERROR_CHECK_ALLOC(repo);
git_repository_set_odb(repo, odb);
*repo_out = repo;
return 0;
}
int git_repository_discover(
git_buf *out,
const char *start_path,
int across_fs,
const char *ceiling_dirs)
{
uint32_t flags = across_fs ? GIT_REPOSITORY_OPEN_CROSS_FS : 0;
int error;
GIT_ASSERT_ARG(start_path);
if ((error = git_buf_sanitize(out)) < 0)
return error;
return find_repo(out, NULL, NULL, NULL, start_path, flags, ceiling_dirs);
}
static int load_config(
git_config **out,
git_repository *repo,
const char *global_config_path,
const char *xdg_config_path,
const char *system_config_path,
const char *programdata_path)
{
int error;
git_buf config_path = GIT_BUF_INIT;
git_config *cfg = NULL;
GIT_ASSERT_ARG(out);
if ((error = git_config_new(&cfg)) < 0)
return error;
if (repo) {
if ((error = git_repository_item_path(&config_path, repo, GIT_REPOSITORY_ITEM_CONFIG)) == 0)
error = git_config_add_file_ondisk(cfg, config_path.ptr, GIT_CONFIG_LEVEL_LOCAL, repo, 0);
if (error && error != GIT_ENOTFOUND)
goto on_error;
git_buf_dispose(&config_path);
}
if (global_config_path != NULL &&
(error = git_config_add_file_ondisk(
cfg, global_config_path, GIT_CONFIG_LEVEL_GLOBAL, repo, 0)) < 0 &&
error != GIT_ENOTFOUND)
goto on_error;
if (xdg_config_path != NULL &&
(error = git_config_add_file_ondisk(
cfg, xdg_config_path, GIT_CONFIG_LEVEL_XDG, repo, 0)) < 0 &&
error != GIT_ENOTFOUND)
goto on_error;
if (system_config_path != NULL &&
(error = git_config_add_file_ondisk(
cfg, system_config_path, GIT_CONFIG_LEVEL_SYSTEM, repo, 0)) < 0 &&
error != GIT_ENOTFOUND)
goto on_error;
if (programdata_path != NULL &&
(error = git_config_add_file_ondisk(
cfg, programdata_path, GIT_CONFIG_LEVEL_PROGRAMDATA, repo, 0)) < 0 &&
error != GIT_ENOTFOUND)
goto on_error;
git_error_clear(); /* clear any lingering ENOTFOUND errors */
*out = cfg;
return 0;
on_error:
git_buf_dispose(&config_path);
git_config_free(cfg);
*out = NULL;
return error;
}
static const char *path_unless_empty(git_buf *buf)
{
return git_buf_len(buf) > 0 ? git_buf_cstr(buf) : NULL;
}
int git_repository_config__weakptr(git_config **out, git_repository *repo)
{
int error = 0;
if (repo->_config == NULL) {
git_buf global_buf = GIT_BUF_INIT;
git_buf xdg_buf = GIT_BUF_INIT;
git_buf system_buf = GIT_BUF_INIT;
git_buf programdata_buf = GIT_BUF_INIT;
git_config *config;
git_config_find_global(&global_buf);
git_config_find_xdg(&xdg_buf);
git_config_find_system(&system_buf);
git_config_find_programdata(&programdata_buf);
/* If there is no global file, open a backend for it anyway */
if (git_buf_len(&global_buf) == 0)
git_config__global_location(&global_buf);
error = load_config(
&config, repo,
path_unless_empty(&global_buf),
path_unless_empty(&xdg_buf),
path_unless_empty(&system_buf),
path_unless_empty(&programdata_buf));
if (!error) {
GIT_REFCOUNT_OWN(config, repo);
if (git_atomic_compare_and_swap(&repo->_config, NULL, config) != NULL) {
GIT_REFCOUNT_OWN(config, NULL);
git_config_free(config);
}
}
git_buf_dispose(&global_buf);
git_buf_dispose(&xdg_buf);
git_buf_dispose(&system_buf);
git_buf_dispose(&programdata_buf);
}
*out = repo->_config;
return error;
}
int git_repository_config(git_config **out, git_repository *repo)
{
if (git_repository_config__weakptr(out, repo) < 0)
return -1;
GIT_REFCOUNT_INC(*out);
return 0;
}
int git_repository_config_snapshot(git_config **out, git_repository *repo)
{
int error;
git_config *weak;
if ((error = git_repository_config__weakptr(&weak, repo)) < 0)
return error;
return git_config_snapshot(out, weak);
}
int git_repository_set_config(git_repository *repo, git_config *config)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(config);
set_config(repo, config);
return 0;
}
int git_repository_odb__weakptr(git_odb **out, git_repository *repo)
{
int error = 0;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(out);
*out = git_atomic_load(repo->_odb);
if (*out == NULL) {
git_buf odb_path = GIT_BUF_INIT;
git_odb *odb;
if ((error = git_repository_item_path(&odb_path, repo,
GIT_REPOSITORY_ITEM_OBJECTS)) < 0 ||
(error = git_odb_new(&odb)) < 0)
return error;
GIT_REFCOUNT_OWN(odb, repo);
if ((error = git_odb__set_caps(odb, GIT_ODB_CAP_FROM_OWNER)) < 0 ||
(error = git_odb__add_default_backends(odb, odb_path.ptr, 0, 0)) < 0) {
git_odb_free(odb);
return error;
}
if (git_atomic_compare_and_swap(&repo->_odb, NULL, odb) != NULL) {
GIT_REFCOUNT_OWN(odb, NULL);
git_odb_free(odb);
}
git_buf_dispose(&odb_path);
*out = git_atomic_load(repo->_odb);
}
return error;
}
int git_repository_odb(git_odb **out, git_repository *repo)
{
if (git_repository_odb__weakptr(out, repo) < 0)
return -1;
GIT_REFCOUNT_INC(*out);
return 0;
}
int git_repository_set_odb(git_repository *repo, git_odb *odb)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(odb);
set_odb(repo, odb);
return 0;
}
int git_repository_refdb__weakptr(git_refdb **out, git_repository *repo)
{
int error = 0;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(repo);
if (repo->_refdb == NULL) {
git_refdb *refdb;
error = git_refdb_open(&refdb, repo);
if (!error) {
GIT_REFCOUNT_OWN(refdb, repo);
if (git_atomic_compare_and_swap(&repo->_refdb, NULL, refdb) != NULL) {
GIT_REFCOUNT_OWN(refdb, NULL);
git_refdb_free(refdb);
}
}
}
*out = repo->_refdb;
return error;
}
int git_repository_refdb(git_refdb **out, git_repository *repo)
{
if (git_repository_refdb__weakptr(out, repo) < 0)
return -1;
GIT_REFCOUNT_INC(*out);
return 0;
}
int git_repository_set_refdb(git_repository *repo, git_refdb *refdb)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(refdb);
set_refdb(repo, refdb);
return 0;
}
int git_repository_index__weakptr(git_index **out, git_repository *repo)
{
int error = 0;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(repo);
if (repo->_index == NULL) {
git_buf index_path = GIT_BUF_INIT;
git_index *index;
if ((error = git_buf_joinpath(&index_path, repo->gitdir, GIT_INDEX_FILE)) < 0)
return error;
error = git_index_open(&index, index_path.ptr);
if (!error) {
GIT_REFCOUNT_OWN(index, repo);
if (git_atomic_compare_and_swap(&repo->_index, NULL, index) != NULL) {
GIT_REFCOUNT_OWN(index, NULL);
git_index_free(index);
}
error = git_index_set_caps(repo->_index,
GIT_INDEX_CAPABILITY_FROM_OWNER);
}
git_buf_dispose(&index_path);
}
*out = repo->_index;
return error;
}
int git_repository_index(git_index **out, git_repository *repo)
{
if (git_repository_index__weakptr(out, repo) < 0)
return -1;
GIT_REFCOUNT_INC(*out);
return 0;
}
int git_repository_set_index(git_repository *repo, git_index *index)
{
GIT_ASSERT_ARG(repo);
set_index(repo, index);
return 0;
}
int git_repository_set_namespace(git_repository *repo, const char *namespace)
{
git__free(repo->namespace);
if (namespace == NULL) {
repo->namespace = NULL;
return 0;
}
return (repo->namespace = git__strdup(namespace)) ? 0 : -1;
}
const char *git_repository_get_namespace(git_repository *repo)
{
return repo->namespace;
}
#ifdef GIT_WIN32
static int reserved_names_add8dot3(git_repository *repo, const char *path)
{
char *name = git_win32_path_8dot3_name(path);
const char *def = GIT_DIR_SHORTNAME;
const char *def_dot_git = DOT_GIT;
size_t name_len, def_len = CONST_STRLEN(GIT_DIR_SHORTNAME);
size_t def_dot_git_len = CONST_STRLEN(DOT_GIT);
git_buf *buf;
if (!name)
return 0;
name_len = strlen(name);
if ((name_len == def_len && memcmp(name, def, def_len) == 0) ||
(name_len == def_dot_git_len && memcmp(name, def_dot_git, def_dot_git_len) == 0)) {
git__free(name);
return 0;
}
if ((buf = git_array_alloc(repo->reserved_names)) == NULL)
return -1;
git_buf_attach(buf, name, name_len);
return true;
}
bool git_repository__reserved_names(
git_buf **out, size_t *outlen, git_repository *repo, bool include_ntfs)
{
GIT_UNUSED(include_ntfs);
if (repo->reserved_names.size == 0) {
git_buf *buf;
size_t i;
/* Add the static defaults */
for (i = 0; i < git_repository__reserved_names_win32_len; i++) {
if ((buf = git_array_alloc(repo->reserved_names)) == NULL)
goto on_error;
buf->ptr = git_repository__reserved_names_win32[i].ptr;
buf->size = git_repository__reserved_names_win32[i].size;
}
/* Try to add any repo-specific reserved names - the gitlink file
* within a submodule or the repository (if the repository directory
* is beneath the workdir). These are typically `.git`, but should
* be protected in case they are not. Note, repo and workdir paths
* are always prettified to end in `/`, so a prefixcmp is safe.
*/
if (!repo->is_bare) {
int (*prefixcmp)(const char *, const char *);
int error, ignorecase;
error = git_repository__configmap_lookup(
&ignorecase, repo, GIT_CONFIGMAP_IGNORECASE);
prefixcmp = (error || ignorecase) ? git__prefixcmp_icase :
git__prefixcmp;
if (repo->gitlink &&
reserved_names_add8dot3(repo, repo->gitlink) < 0)
goto on_error;
if (repo->gitdir &&
prefixcmp(repo->gitdir, repo->workdir) == 0 &&
reserved_names_add8dot3(repo, repo->gitdir) < 0)
goto on_error;
}
}
*out = repo->reserved_names.ptr;
*outlen = repo->reserved_names.size;
return true;
/* Always give good defaults, even on OOM */
on_error:
*out = git_repository__reserved_names_win32;
*outlen = git_repository__reserved_names_win32_len;
return false;
}
#else
bool git_repository__reserved_names(
git_buf **out, size_t *outlen, git_repository *repo, bool include_ntfs)
{
GIT_UNUSED(repo);
if (include_ntfs) {
*out = git_repository__reserved_names_win32;
*outlen = git_repository__reserved_names_win32_len;
} else {
*out = git_repository__reserved_names_posix;
*outlen = git_repository__reserved_names_posix_len;
}
return true;
}
#endif
static int check_repositoryformatversion(int *version, git_config *config)
{
int error;
error = git_config_get_int32(version, config, "core.repositoryformatversion");
/* git ignores this if the config variable isn't there */
if (error == GIT_ENOTFOUND)
return 0;
if (error < 0)
return -1;
if (GIT_REPO_MAX_VERSION < *version) {
git_error_set(GIT_ERROR_REPOSITORY,
"unsupported repository version %d; only versions up to %d are supported",
*version, GIT_REPO_MAX_VERSION);
return -1;
}
return 0;
}
static const char *builtin_extensions[] = {
"noop"
};
static git_vector user_extensions = GIT_VECTOR_INIT;
static int check_valid_extension(const git_config_entry *entry, void *payload)
{
git_buf cfg = GIT_BUF_INIT;
bool reject;
const char *extension;
size_t i;
int error = 0;
GIT_UNUSED(payload);
git_vector_foreach (&user_extensions, i, extension) {
git_buf_clear(&cfg);
/*
* Users can specify that they don't want to support an
* extension with a '!' prefix.
*/
if ((reject = (extension[0] == '!')) == true)
extension = &extension[1];
if ((error = git_buf_printf(&cfg, "extensions.%s", extension)) < 0)
goto done;
if (strcmp(entry->name, cfg.ptr) == 0) {
if (reject)
goto fail;
goto done;
}
}
for (i = 0; i < ARRAY_SIZE(builtin_extensions); i++) {
extension = builtin_extensions[i];
if ((error = git_buf_printf(&cfg, "extensions.%s", extension)) < 0)
goto done;
if (strcmp(entry->name, cfg.ptr) == 0)
goto done;
}
fail:
git_error_set(GIT_ERROR_REPOSITORY, "unsupported extension name %s", entry->name);
error = -1;
done:
git_buf_dispose(&cfg);
return error;
}
static int check_extensions(git_config *config, int version)
{
if (version < 1)
return 0;
return git_config_foreach_match(config, "^extensions\\.", check_valid_extension, NULL);
}
int git_repository__extensions(char ***out, size_t *out_len)
{
git_vector extensions;
const char *builtin, *user;
char *extension;
size_t i, j;
if (git_vector_init(&extensions, 8, NULL) < 0)
return -1;
for (i = 0; i < ARRAY_SIZE(builtin_extensions); i++) {
bool match = false;
builtin = builtin_extensions[i];
git_vector_foreach (&user_extensions, j, user) {
if (user[0] == '!' && strcmp(builtin, &user[1]) == 0) {
match = true;
break;
}
}
if (match)
continue;
if ((extension = git__strdup(builtin)) == NULL ||
git_vector_insert(&extensions, extension) < 0)
return -1;
}
git_vector_foreach (&user_extensions, i, user) {
if (user[0] == '!')
continue;
if ((extension = git__strdup(user)) == NULL ||
git_vector_insert(&extensions, extension) < 0)
return -1;
}
*out = (char **)git_vector_detach(out_len, NULL, &extensions);
return 0;
}
int git_repository__set_extensions(const char **extensions, size_t len)
{
char *extension;
size_t i;
git_repository__free_extensions();
for (i = 0; i < len; i++) {
if ((extension = git__strdup(extensions[i])) == NULL ||
git_vector_insert(&user_extensions, extension) < 0)
return -1;
}
return 0;
}
void git_repository__free_extensions(void)
{
git_vector_free_deep(&user_extensions);
}
int git_repository_create_head(const char *git_dir, const char *ref_name)
{
git_buf ref_path = GIT_BUF_INIT;
git_filebuf ref = GIT_FILEBUF_INIT;
const char *fmt;
int error;
if ((error = git_buf_joinpath(&ref_path, git_dir, GIT_HEAD_FILE)) < 0 ||
(error = git_filebuf_open(&ref, ref_path.ptr, 0, GIT_REFS_FILE_MODE)) < 0)
goto out;
if (git__prefixcmp(ref_name, GIT_REFS_DIR) == 0)
fmt = "ref: %s\n";
else
fmt = "ref: " GIT_REFS_HEADS_DIR "%s\n";
if ((error = git_filebuf_printf(&ref, fmt, ref_name)) < 0 ||
(error = git_filebuf_commit(&ref)) < 0)
goto out;
out:
git_buf_dispose(&ref_path);
git_filebuf_cleanup(&ref);
return error;
}
static bool is_chmod_supported(const char *file_path)
{
struct stat st1, st2;
if (p_stat(file_path, &st1) < 0)
return false;
if (p_chmod(file_path, st1.st_mode ^ S_IXUSR) < 0)
return false;
if (p_stat(file_path, &st2) < 0)
return false;
return (st1.st_mode != st2.st_mode);
}
static bool is_filesystem_case_insensitive(const char *gitdir_path)
{
git_buf path = GIT_BUF_INIT;
int is_insensitive = -1;
if (!git_buf_joinpath(&path, gitdir_path, "CoNfIg"))
is_insensitive = git_path_exists(git_buf_cstr(&path));
git_buf_dispose(&path);
return is_insensitive;
}
static bool are_symlinks_supported(const char *wd_path)
{
git_config *config = NULL;
git_buf global_buf = GIT_BUF_INIT;
git_buf xdg_buf = GIT_BUF_INIT;
git_buf system_buf = GIT_BUF_INIT;
git_buf programdata_buf = GIT_BUF_INIT;
int symlinks = 0;
/*
* To emulate Git for Windows, symlinks on Windows must be explicitly
* opted-in. We examine the system configuration for a core.symlinks
* set to true. If found, we then examine the filesystem to see if
* symlinks are _actually_ supported by the current user. If that is
* _not_ set, then we do not test or enable symlink support.
*/
#ifdef GIT_WIN32
git_config_find_global(&global_buf);
git_config_find_xdg(&xdg_buf);
git_config_find_system(&system_buf);
git_config_find_programdata(&programdata_buf);
if (load_config(&config, NULL,
path_unless_empty(&global_buf),
path_unless_empty(&xdg_buf),
path_unless_empty(&system_buf),
path_unless_empty(&programdata_buf)) < 0)
goto done;
if (git_config_get_bool(&symlinks, config, "core.symlinks") < 0 || !symlinks)
goto done;
#endif
if (!(symlinks = git_path_supports_symlinks(wd_path)))
goto done;
done:
git_buf_dispose(&global_buf);
git_buf_dispose(&xdg_buf);
git_buf_dispose(&system_buf);
git_buf_dispose(&programdata_buf);
git_config_free(config);
return symlinks != 0;
}
static int create_empty_file(const char *path, mode_t mode)
{
int fd;
if ((fd = p_creat(path, mode)) < 0) {
git_error_set(GIT_ERROR_OS, "error while creating '%s'", path);
return -1;
}
if (p_close(fd) < 0) {
git_error_set(GIT_ERROR_OS, "error while closing '%s'", path);
return -1;
}
return 0;
}
static int repo_local_config(
git_config **out,
git_buf *config_dir,
git_repository *repo,
const char *repo_dir)
{
int error = 0;
git_config *parent;
const char *cfg_path;
if (git_buf_joinpath(config_dir, repo_dir, GIT_CONFIG_FILENAME_INREPO) < 0)
return -1;
cfg_path = git_buf_cstr(config_dir);
/* make LOCAL config if missing */
if (!git_path_isfile(cfg_path) &&
(error = create_empty_file(cfg_path, GIT_CONFIG_FILE_MODE)) < 0)
return error;
/* if no repo, just open that file directly */
if (!repo)
return git_config_open_ondisk(out, cfg_path);
/* otherwise, open parent config and get that level */
if ((error = git_repository_config__weakptr(&parent, repo)) < 0)
return error;
if (git_config_open_level(out, parent, GIT_CONFIG_LEVEL_LOCAL) < 0) {
git_error_clear();
if (!(error = git_config_add_file_ondisk(
parent, cfg_path, GIT_CONFIG_LEVEL_LOCAL, repo, false)))
error = git_config_open_level(out, parent, GIT_CONFIG_LEVEL_LOCAL);
}
git_config_free(parent);
return error;
}
static int repo_init_fs_configs(
git_config *cfg,
const char *cfg_path,
const char *repo_dir,
const char *work_dir,
bool update_ignorecase)
{
int error = 0;
if (!work_dir)
work_dir = repo_dir;
if ((error = git_config_set_bool(
cfg, "core.filemode", is_chmod_supported(cfg_path))) < 0)
return error;
if (!are_symlinks_supported(work_dir)) {
if ((error = git_config_set_bool(cfg, "core.symlinks", false)) < 0)
return error;
} else if (git_config_delete_entry(cfg, "core.symlinks") < 0)
git_error_clear();
if (update_ignorecase) {
if (is_filesystem_case_insensitive(repo_dir)) {
if ((error = git_config_set_bool(cfg, "core.ignorecase", true)) < 0)
return error;
} else if (git_config_delete_entry(cfg, "core.ignorecase") < 0)
git_error_clear();
}
#ifdef GIT_USE_ICONV
if ((error = git_config_set_bool(
cfg, "core.precomposeunicode",
git_path_does_fs_decompose_unicode(work_dir))) < 0)
return error;
/* on non-iconv platforms, don't even set core.precomposeunicode */
#endif
return 0;
}
static int repo_init_config(
const char *repo_dir,
const char *work_dir,
uint32_t flags,
uint32_t mode)
{
int error = 0;
git_buf cfg_path = GIT_BUF_INIT, worktree_path = GIT_BUF_INIT;
git_config *config = NULL;
bool is_bare = ((flags & GIT_REPOSITORY_INIT_BARE) != 0);
bool is_reinit = ((flags & GIT_REPOSITORY_INIT__IS_REINIT) != 0);
int version = 0;
if ((error = repo_local_config(&config, &cfg_path, NULL, repo_dir)) < 0)
goto cleanup;
if (is_reinit && (error = check_repositoryformatversion(&version, config)) < 0)
goto cleanup;
if ((error = check_extensions(config, version)) < 0)
goto cleanup;
#define SET_REPO_CONFIG(TYPE, NAME, VAL) do { \
if ((error = git_config_set_##TYPE(config, NAME, VAL)) < 0) \
goto cleanup; } while (0)
SET_REPO_CONFIG(bool, "core.bare", is_bare);
SET_REPO_CONFIG(int32, "core.repositoryformatversion", GIT_REPO_VERSION);
if ((error = repo_init_fs_configs(
config, cfg_path.ptr, repo_dir, work_dir, !is_reinit)) < 0)
goto cleanup;
if (!is_bare) {
SET_REPO_CONFIG(bool, "core.logallrefupdates", true);
if (!(flags & GIT_REPOSITORY_INIT__NATURAL_WD)) {
if ((error = git_buf_sets(&worktree_path, work_dir)) < 0)
goto cleanup;
if ((flags & GIT_REPOSITORY_INIT_RELATIVE_GITLINK))
if ((error = git_path_make_relative(&worktree_path, repo_dir)) < 0)
goto cleanup;
SET_REPO_CONFIG(string, "core.worktree", worktree_path.ptr);
} else if (is_reinit) {
if (git_config_delete_entry(config, "core.worktree") < 0)
git_error_clear();
}
}
if (mode == GIT_REPOSITORY_INIT_SHARED_GROUP) {
SET_REPO_CONFIG(int32, "core.sharedrepository", 1);
SET_REPO_CONFIG(bool, "receive.denyNonFastforwards", true);
}
else if (mode == GIT_REPOSITORY_INIT_SHARED_ALL) {
SET_REPO_CONFIG(int32, "core.sharedrepository", 2);
SET_REPO_CONFIG(bool, "receive.denyNonFastforwards", true);
}
cleanup:
git_buf_dispose(&cfg_path);
git_buf_dispose(&worktree_path);
git_config_free(config);
return error;
}
static int repo_reinit_submodule_fs(git_submodule *sm, const char *n, void *p)
{
git_repository *smrepo = NULL;
GIT_UNUSED(n); GIT_UNUSED(p);
if (git_submodule_open(&smrepo, sm) < 0 ||
git_repository_reinit_filesystem(smrepo, true) < 0)
git_error_clear();
git_repository_free(smrepo);
return 0;
}
int git_repository_reinit_filesystem(git_repository *repo, int recurse)
{
int error = 0;
git_buf path = GIT_BUF_INIT;
git_config *config = NULL;
const char *repo_dir = git_repository_path(repo);
if (!(error = repo_local_config(&config, &path, repo, repo_dir)))
error = repo_init_fs_configs(
config, path.ptr, repo_dir, git_repository_workdir(repo), true);
git_config_free(config);
git_buf_dispose(&path);
git_repository__configmap_lookup_cache_clear(repo);
if (!repo->is_bare && recurse)
(void)git_submodule_foreach(repo, repo_reinit_submodule_fs, NULL);
return error;
}
static int repo_write_template(
const char *git_dir,
bool allow_overwrite,
const char *file,
mode_t mode,
bool hidden,
const char *content)
{
git_buf path = GIT_BUF_INIT;
int fd, error = 0, flags;
if (git_buf_joinpath(&path, git_dir, file) < 0)
return -1;
if (allow_overwrite)
flags = O_WRONLY | O_CREAT | O_TRUNC;
else
flags = O_WRONLY | O_CREAT | O_EXCL;
fd = p_open(git_buf_cstr(&path), flags, mode);
if (fd >= 0) {
error = p_write(fd, content, strlen(content));
p_close(fd);
}
else if (errno != EEXIST)
error = fd;
#ifdef GIT_WIN32
if (!error && hidden) {
if (git_win32__set_hidden(path.ptr, true) < 0)
error = -1;
}
#else
GIT_UNUSED(hidden);
#endif
git_buf_dispose(&path);
if (error)
git_error_set(GIT_ERROR_OS,
"failed to initialize repository with template '%s'", file);
return error;
}
static int repo_write_gitlink(
const char *in_dir, const char *to_repo, bool use_relative_path)
{
int error;
git_buf buf = GIT_BUF_INIT;
git_buf path_to_repo = GIT_BUF_INIT;
struct stat st;
git_path_dirname_r(&buf, to_repo);
git_path_to_dir(&buf);
if (git_buf_oom(&buf))
return -1;
/* don't write gitlink to natural workdir */
if (git__suffixcmp(to_repo, "/" DOT_GIT "/") == 0 &&
strcmp(in_dir, buf.ptr) == 0)
{
error = GIT_PASSTHROUGH;
goto cleanup;
}
if ((error = git_buf_joinpath(&buf, in_dir, DOT_GIT)) < 0)
goto cleanup;
if (!p_stat(buf.ptr, &st) && !S_ISREG(st.st_mode)) {
git_error_set(GIT_ERROR_REPOSITORY,
"cannot overwrite gitlink file into path '%s'", in_dir);
error = GIT_EEXISTS;
goto cleanup;
}
git_buf_clear(&buf);
error = git_buf_sets(&path_to_repo, to_repo);
if (!error && use_relative_path)
error = git_path_make_relative(&path_to_repo, in_dir);
if (!error)
error = git_buf_join(&buf, ' ', GIT_FILE_CONTENT_PREFIX, path_to_repo.ptr);
if (!error)
error = repo_write_template(in_dir, true, DOT_GIT, 0666, true, buf.ptr);
cleanup:
git_buf_dispose(&buf);
git_buf_dispose(&path_to_repo);
return error;
}
static mode_t pick_dir_mode(git_repository_init_options *opts)
{
if (opts->mode == GIT_REPOSITORY_INIT_SHARED_UMASK)
return 0777;
if (opts->mode == GIT_REPOSITORY_INIT_SHARED_GROUP)
return (0775 | S_ISGID);
if (opts->mode == GIT_REPOSITORY_INIT_SHARED_ALL)
return (0777 | S_ISGID);
return opts->mode;
}
#include "repo_template.h"
static int repo_init_structure(
const char *repo_dir,
const char *work_dir,
git_repository_init_options *opts)
{
int error = 0;
repo_template_item *tpl;
bool external_tpl =
((opts->flags & GIT_REPOSITORY_INIT_EXTERNAL_TEMPLATE) != 0);
mode_t dmode = pick_dir_mode(opts);
bool chmod = opts->mode != GIT_REPOSITORY_INIT_SHARED_UMASK;
/* Hide the ".git" directory */
#ifdef GIT_WIN32
if ((opts->flags & GIT_REPOSITORY_INIT__HAS_DOTGIT) != 0) {
if (git_win32__set_hidden(repo_dir, true) < 0) {
git_error_set(GIT_ERROR_OS,
"failed to mark Git repository folder as hidden");
return -1;
}
}
#endif
/* Create the .git gitlink if appropriate */
if ((opts->flags & GIT_REPOSITORY_INIT_BARE) == 0 &&
(opts->flags & GIT_REPOSITORY_INIT__NATURAL_WD) == 0)
{
if (repo_write_gitlink(work_dir, repo_dir, opts->flags & GIT_REPOSITORY_INIT_RELATIVE_GITLINK) < 0)
return -1;
}
/* Copy external template if requested */
if (external_tpl) {
git_config *cfg = NULL;
const char *tdir = NULL;
bool default_template = false;
git_buf template_buf = GIT_BUF_INIT;
if (opts->template_path)
tdir = opts->template_path;
else if ((error = git_config_open_default(&cfg)) >= 0) {
if (!git_config_get_path(&template_buf, cfg, "init.templatedir"))
tdir = template_buf.ptr;
git_error_clear();
}
if (!tdir) {
if (!(error = git_sysdir_find_template_dir(&template_buf)))
tdir = template_buf.ptr;
default_template = true;
}
/*
* If tdir was the empty string, treat it like tdir was a path to an
* empty directory (so, don't do any copying). This is the behavior
* that git(1) exhibits, although it doesn't seem to be officially
* documented.
*/
if (tdir && git__strcmp(tdir, "") != 0) {
uint32_t cpflags = GIT_CPDIR_COPY_SYMLINKS |
GIT_CPDIR_SIMPLE_TO_MODE |
GIT_CPDIR_COPY_DOTFILES;
if (opts->mode != GIT_REPOSITORY_INIT_SHARED_UMASK)
cpflags |= GIT_CPDIR_CHMOD_DIRS;
error = git_futils_cp_r(tdir, repo_dir, cpflags, dmode);
}
git_buf_dispose(&template_buf);
git_config_free(cfg);
if (error < 0) {
if (!default_template)
return error;
/* if template was default, ignore error and use internal */
git_error_clear();
external_tpl = false;
error = 0;
}
}
/* Copy internal template
* - always ensure existence of dirs
* - only create files if no external template was specified
*/
for (tpl = repo_template; !error && tpl->path; ++tpl) {
if (!tpl->content) {
uint32_t mkdir_flags = GIT_MKDIR_PATH;
if (chmod)
mkdir_flags |= GIT_MKDIR_CHMOD;
error = git_futils_mkdir_relative(
tpl->path, repo_dir, dmode, mkdir_flags, NULL);
}
else if (!external_tpl) {
const char *content = tpl->content;
if (opts->description && strcmp(tpl->path, GIT_DESC_FILE) == 0)
content = opts->description;
error = repo_write_template(
repo_dir, false, tpl->path, tpl->mode, false, content);
}
}
return error;
}
static int mkdir_parent(git_buf *buf, uint32_t mode, bool skip2)
{
/* When making parent directories during repository initialization
* don't try to set gid or grant world write access
*/
return git_futils_mkdir(
buf->ptr, mode & ~(S_ISGID | 0002),
GIT_MKDIR_PATH | GIT_MKDIR_VERIFY_DIR |
(skip2 ? GIT_MKDIR_SKIP_LAST2 : GIT_MKDIR_SKIP_LAST));
}
static int repo_init_directories(
git_buf *repo_path,
git_buf *wd_path,
const char *given_repo,
git_repository_init_options *opts)
{
int error = 0;
bool is_bare, add_dotgit, has_dotgit, natural_wd;
mode_t dirmode;
/* There are three possible rules for what we are allowed to create:
* - MKPATH means anything we need
* - MKDIR means just the .git directory and its parent and the workdir
* - Neither means only the .git directory can be created
*
* There are 5 "segments" of path that we might need to deal with:
* 1. The .git directory
* 2. The parent of the .git directory
* 3. Everything above the parent of the .git directory
* 4. The working directory (often the same as #2)
* 5. Everything above the working directory (often the same as #3)
*
* For all directories created, we start with the init_mode value for
* permissions and then strip off bits in some cases:
*
* For MKPATH, we create #3 (and #5) paths without S_ISGID or S_IWOTH
* For MKPATH and MKDIR, we create #2 (and #4) without S_ISGID
* For all rules, we create #1 using the untouched init_mode
*/
/* set up repo path */
is_bare = ((opts->flags & GIT_REPOSITORY_INIT_BARE) != 0);
add_dotgit =
(opts->flags & GIT_REPOSITORY_INIT_NO_DOTGIT_DIR) == 0 &&
!is_bare &&
git__suffixcmp(given_repo, "/" DOT_GIT) != 0 &&
git__suffixcmp(given_repo, "/" GIT_DIR) != 0;
if (git_buf_joinpath(repo_path, given_repo, add_dotgit ? GIT_DIR : "") < 0)
return -1;
has_dotgit = (git__suffixcmp(repo_path->ptr, "/" GIT_DIR) == 0);
if (has_dotgit)
opts->flags |= GIT_REPOSITORY_INIT__HAS_DOTGIT;
/* set up workdir path */
if (!is_bare) {
if (opts->workdir_path) {
if (git_path_join_unrooted(
wd_path, opts->workdir_path, repo_path->ptr, NULL) < 0)
return -1;
} else if (has_dotgit) {
if (git_path_dirname_r(wd_path, repo_path->ptr) < 0)
return -1;
} else {
git_error_set(GIT_ERROR_REPOSITORY, "cannot pick working directory"
" for non-bare repository that isn't a '.git' directory");
return -1;
}
if (git_path_to_dir(wd_path) < 0)
return -1;
} else {
git_buf_clear(wd_path);
}
natural_wd =
has_dotgit &&
wd_path->size > 0 &&
wd_path->size + strlen(GIT_DIR) == repo_path->size &&
memcmp(repo_path->ptr, wd_path->ptr, wd_path->size) == 0;
if (natural_wd)
opts->flags |= GIT_REPOSITORY_INIT__NATURAL_WD;
/* create directories as needed / requested */
dirmode = pick_dir_mode(opts);
if ((opts->flags & GIT_REPOSITORY_INIT_MKPATH) != 0) {
/* create path #5 */
if (wd_path->size > 0 &&
(error = mkdir_parent(wd_path, dirmode, false)) < 0)
return error;
/* create path #3 (if not the same as #5) */
if (!natural_wd &&
(error = mkdir_parent(repo_path, dirmode, has_dotgit)) < 0)
return error;
}
if ((opts->flags & GIT_REPOSITORY_INIT_MKDIR) != 0 ||
(opts->flags & GIT_REPOSITORY_INIT_MKPATH) != 0)
{
/* create path #4 */
if (wd_path->size > 0 &&
(error = git_futils_mkdir(
wd_path->ptr, dirmode & ~S_ISGID,
GIT_MKDIR_VERIFY_DIR)) < 0)
return error;
/* create path #2 (if not the same as #4) */
if (!natural_wd &&
(error = git_futils_mkdir(
repo_path->ptr, dirmode & ~S_ISGID,
GIT_MKDIR_VERIFY_DIR | GIT_MKDIR_SKIP_LAST)) < 0)
return error;
}
if ((opts->flags & GIT_REPOSITORY_INIT_MKDIR) != 0 ||
(opts->flags & GIT_REPOSITORY_INIT_MKPATH) != 0 ||
has_dotgit)
{
/* create path #1 */
error = git_futils_mkdir(repo_path->ptr, dirmode,
GIT_MKDIR_VERIFY_DIR | ((dirmode & S_ISGID) ? GIT_MKDIR_CHMOD : 0));
}
/* prettify both directories now that they are created */
if (!error) {
error = git_path_prettify_dir(repo_path, repo_path->ptr, NULL);
if (!error && wd_path->size > 0)
error = git_path_prettify_dir(wd_path, wd_path->ptr, NULL);
}
return error;
}
static int repo_init_head(const char *repo_dir, const char *given)
{
git_config *cfg = NULL;
git_buf head_path = GIT_BUF_INIT, cfg_branch = GIT_BUF_INIT;
const char *initial_head = NULL;
int error;
if ((error = git_buf_joinpath(&head_path, repo_dir, GIT_HEAD_FILE)) < 0)
goto out;
/*
* A template may have set a HEAD; use that unless it's been
* overridden by the caller's given initial head setting.
*/
if (git_path_exists(head_path.ptr) && !given)
goto out;
if (given) {
initial_head = given;
} else if ((error = git_config_open_default(&cfg)) >= 0 &&
(error = git_config_get_string_buf(&cfg_branch, cfg, "init.defaultbranch")) >= 0 &&
*cfg_branch.ptr) {
initial_head = cfg_branch.ptr;
}
if (!initial_head)
initial_head = GIT_BRANCH_DEFAULT;
error = git_repository_create_head(repo_dir, initial_head);
out:
git_config_free(cfg);
git_buf_dispose(&head_path);
git_buf_dispose(&cfg_branch);
return error;
}
static int repo_init_create_origin(git_repository *repo, const char *url)
{
int error;
git_remote *remote;
if (!(error = git_remote_create(&remote, repo, GIT_REMOTE_ORIGIN, url))) {
git_remote_free(remote);
}
return error;
}
int git_repository_init(
git_repository **repo_out, const char *path, unsigned is_bare)
{
git_repository_init_options opts = GIT_REPOSITORY_INIT_OPTIONS_INIT;
opts.flags = GIT_REPOSITORY_INIT_MKPATH; /* don't love this default */
if (is_bare)
opts.flags |= GIT_REPOSITORY_INIT_BARE;
return git_repository_init_ext(repo_out, path, &opts);
}
int git_repository_init_ext(
git_repository **out,
const char *given_repo,
git_repository_init_options *opts)
{
git_buf repo_path = GIT_BUF_INIT, wd_path = GIT_BUF_INIT,
common_path = GIT_BUF_INIT;
const char *wd;
bool is_valid;
int error;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(given_repo);
GIT_ASSERT_ARG(opts);
GIT_ERROR_CHECK_VERSION(opts, GIT_REPOSITORY_INIT_OPTIONS_VERSION, "git_repository_init_options");
if ((error = repo_init_directories(&repo_path, &wd_path, given_repo, opts)) < 0)
goto out;
wd = (opts->flags & GIT_REPOSITORY_INIT_BARE) ? NULL : git_buf_cstr(&wd_path);
if ((error = is_valid_repository_path(&is_valid, &repo_path, &common_path)) < 0)
goto out;
if (is_valid) {
if ((opts->flags & GIT_REPOSITORY_INIT_NO_REINIT) != 0) {
git_error_set(GIT_ERROR_REPOSITORY,
"attempt to reinitialize '%s'", given_repo);
error = GIT_EEXISTS;
goto out;
}
opts->flags |= GIT_REPOSITORY_INIT__IS_REINIT;
if ((error = repo_init_config(repo_path.ptr, wd, opts->flags, opts->mode)) < 0)
goto out;
/* TODO: reinitialize the templates */
} else {
if ((error = repo_init_structure(repo_path.ptr, wd, opts)) < 0 ||
(error = repo_init_config(repo_path.ptr, wd, opts->flags, opts->mode)) < 0 ||
(error = repo_init_head(repo_path.ptr, opts->initial_head)) < 0)
goto out;
}
if ((error = git_repository_open(out, repo_path.ptr)) < 0)
goto out;
if (opts->origin_url &&
(error = repo_init_create_origin(*out, opts->origin_url)) < 0)
goto out;
out:
git_buf_dispose(&common_path);
git_buf_dispose(&repo_path);
git_buf_dispose(&wd_path);
return error;
}
int git_repository_head_detached(git_repository *repo)
{
git_reference *ref;
git_odb *odb = NULL;
int exists;
if (git_repository_odb__weakptr(&odb, repo) < 0)
return -1;
if (git_reference_lookup(&ref, repo, GIT_HEAD_FILE) < 0)
return -1;
if (git_reference_type(ref) == GIT_REFERENCE_SYMBOLIC) {
git_reference_free(ref);
return 0;
}
exists = git_odb_exists(odb, git_reference_target(ref));
git_reference_free(ref);
return exists;
}
int git_repository_head_detached_for_worktree(git_repository *repo, const char *name)
{
git_reference *ref = NULL;
int error;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
if ((error = git_repository_head_for_worktree(&ref, repo, name)) < 0)
goto out;
error = (git_reference_type(ref) != GIT_REFERENCE_SYMBOLIC);
out:
git_reference_free(ref);
return error;
}
int git_repository_head(git_reference **head_out, git_repository *repo)
{
git_reference *head;
int error;
GIT_ASSERT_ARG(head_out);
if ((error = git_reference_lookup(&head, repo, GIT_HEAD_FILE)) < 0)
return error;
if (git_reference_type(head) == GIT_REFERENCE_DIRECT) {
*head_out = head;
return 0;
}
error = git_reference_lookup_resolved(head_out, repo, git_reference_symbolic_target(head), -1);
git_reference_free(head);
return error == GIT_ENOTFOUND ? GIT_EUNBORNBRANCH : error;
}
int git_repository_head_for_worktree(git_reference **out, git_repository *repo, const char *name)
{
git_repository *worktree_repo = NULL;
git_worktree *worktree = NULL;
git_reference *head = NULL;
int error;
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(name);
*out = NULL;
if ((error = git_worktree_lookup(&worktree, repo, name)) < 0 ||
(error = git_repository_open_from_worktree(&worktree_repo, worktree)) < 0 ||
(error = git_reference_lookup(&head, worktree_repo, GIT_HEAD_FILE)) < 0)
goto out;
if (git_reference_type(head) != GIT_REFERENCE_DIRECT) {
if ((error = git_reference_lookup_resolved(out, worktree_repo, git_reference_symbolic_target(head), -1)) < 0)
goto out;
} else {
*out = head;
head = NULL;
}
out:
git_reference_free(head);
git_worktree_free(worktree);
git_repository_free(worktree_repo);
return error;
}
int git_repository_foreach_worktree(git_repository *repo,
git_repository_foreach_worktree_cb cb,
void *payload)
{
git_strarray worktrees = {0};
git_repository *worktree_repo = NULL;
git_worktree *worktree = NULL;
int error;
size_t i;
/* apply operation to repository supplied when commondir is empty, implying there's
* no linked worktrees to iterate, which can occur when using custom odb/refdb
*/
if (!repo->commondir)
return cb(repo, payload);
if ((error = git_repository_open(&worktree_repo, repo->commondir)) < 0 ||
(error = cb(worktree_repo, payload) != 0))
goto out;
git_repository_free(worktree_repo);
worktree_repo = NULL;
if ((error = git_worktree_list(&worktrees, repo)) < 0)
goto out;
for (i = 0; i < worktrees.count; i++) {
git_repository_free(worktree_repo);
worktree_repo = NULL;
git_worktree_free(worktree);
worktree = NULL;
if ((error = git_worktree_lookup(&worktree, repo, worktrees.strings[i]) < 0) ||
(error = git_repository_open_from_worktree(&worktree_repo, worktree)) < 0) {
if (error != GIT_ENOTFOUND)
goto out;
error = 0;
continue;
}
if ((error = cb(worktree_repo, payload)) != 0)
goto out;
}
out:
git_strarray_dispose(&worktrees);
git_repository_free(worktree_repo);
git_worktree_free(worktree);
return error;
}
int git_repository_head_unborn(git_repository *repo)
{
git_reference *ref = NULL;
int error;
error = git_repository_head(&ref, repo);
git_reference_free(ref);
if (error == GIT_EUNBORNBRANCH) {
git_error_clear();
return 1;
}
if (error < 0)
return -1;
return 0;
}
static int repo_contains_no_reference(git_repository *repo)
{
git_reference_iterator *iter;
const char *refname;
int error;
if ((error = git_reference_iterator_new(&iter, repo)) < 0)
return error;
error = git_reference_next_name(&refname, iter);
git_reference_iterator_free(iter);
if (error == GIT_ITEROVER)
return 1;
return error;
}
int git_repository_initialbranch(git_buf *out, git_repository *repo)
{
git_config *config;
git_config_entry *entry = NULL;
const char *branch;
int valid, error;
if ((error = git_repository_config__weakptr(&config, repo)) < 0)
return error;
if ((error = git_config_get_entry(&entry, config, "init.defaultbranch")) == 0 &&
*entry->value) {
branch = entry->value;
}
else if (!error || error == GIT_ENOTFOUND) {
branch = GIT_BRANCH_DEFAULT;
}
else {
goto done;
}
if ((error = git_buf_puts(out, GIT_REFS_HEADS_DIR)) < 0 ||
(error = git_buf_puts(out, branch)) < 0 ||
(error = git_reference_name_is_valid(&valid, out->ptr)) < 0)
goto done;
if (!valid) {
git_error_set(GIT_ERROR_INVALID, "the value of init.defaultBranch is not a valid branch name");
error = -1;
}
done:
git_config_entry_free(entry);
return error;
}
int git_repository_is_empty(git_repository *repo)
{
git_reference *head = NULL;
git_buf initialbranch = GIT_BUF_INIT;
int result = 0;
if ((result = git_reference_lookup(&head, repo, GIT_HEAD_FILE)) < 0 ||
(result = git_repository_initialbranch(&initialbranch, repo)) < 0)
goto done;
result = (git_reference_type(head) == GIT_REFERENCE_SYMBOLIC &&
strcmp(git_reference_symbolic_target(head), initialbranch.ptr) == 0 &&
repo_contains_no_reference(repo));
done:
git_reference_free(head);
git_buf_dispose(&initialbranch);
return result;
}
static const char *resolved_parent_path(const git_repository *repo, git_repository_item_t item, git_repository_item_t fallback)
{
const char *parent;
switch (item) {
case GIT_REPOSITORY_ITEM_GITDIR:
parent = git_repository_path(repo);
break;
case GIT_REPOSITORY_ITEM_WORKDIR:
parent = git_repository_workdir(repo);
break;
case GIT_REPOSITORY_ITEM_COMMONDIR:
parent = git_repository_commondir(repo);
break;
default:
git_error_set(GIT_ERROR_INVALID, "invalid item directory");
return NULL;
}
if (!parent && fallback != GIT_REPOSITORY_ITEM__LAST)
return resolved_parent_path(repo, fallback, GIT_REPOSITORY_ITEM__LAST);
return parent;
}
int git_repository_item_path(git_buf *out, const git_repository *repo, git_repository_item_t item)
{
const char *parent = resolved_parent_path(repo, items[item].parent, items[item].fallback);
if (parent == NULL) {
git_error_set(GIT_ERROR_INVALID, "path cannot exist in repository");
return GIT_ENOTFOUND;
}
if (git_buf_sets(out, parent) < 0)
return -1;
if (items[item].name) {
if (git_buf_joinpath(out, parent, items[item].name) < 0)
return -1;
}
if (items[item].directory) {
if (git_path_to_dir(out) < 0)
return -1;
}
return 0;
}
const char *git_repository_path(const git_repository *repo)
{
GIT_ASSERT_ARG_WITH_RETVAL(repo, NULL);
return repo->gitdir;
}
const char *git_repository_workdir(const git_repository *repo)
{
GIT_ASSERT_ARG_WITH_RETVAL(repo, NULL);
if (repo->is_bare)
return NULL;
return repo->workdir;
}
int git_repository_workdir_path(
git_buf *out, git_repository *repo, const char *path)
{
int error;
if (!repo->workdir) {
git_error_set(GIT_ERROR_REPOSITORY, "repository has no working directory");
return GIT_EBAREREPO;
}
if (!(error = git_buf_joinpath(out, repo->workdir, path)))
error = git_path_validate_workdir_buf(repo, out);
return error;
}
const char *git_repository_commondir(const git_repository *repo)
{
GIT_ASSERT_ARG_WITH_RETVAL(repo, NULL);
return repo->commondir;
}
int git_repository_set_workdir(
git_repository *repo, const char *workdir, int update_gitlink)
{
int error = 0;
git_buf path = GIT_BUF_INIT;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(workdir);
if (git_path_prettify_dir(&path, workdir, NULL) < 0)
return -1;
if (repo->workdir && strcmp(repo->workdir, path.ptr) == 0)
return 0;
if (update_gitlink) {
git_config *config;
if (git_repository_config__weakptr(&config, repo) < 0)
return -1;
error = repo_write_gitlink(path.ptr, git_repository_path(repo), false);
/* passthrough error means gitlink is unnecessary */
if (error == GIT_PASSTHROUGH)
error = git_config_delete_entry(config, "core.worktree");
else if (!error)
error = git_config_set_string(config, "core.worktree", path.ptr);
if (!error)
error = git_config_set_bool(config, "core.bare", false);
}
if (!error) {
char *old_workdir = repo->workdir;
repo->workdir = git_buf_detach(&path);
repo->is_bare = 0;
git__free(old_workdir);
}
return error;
}
int git_repository_is_bare(const git_repository *repo)
{
GIT_ASSERT_ARG(repo);
return repo->is_bare;
}
int git_repository_is_worktree(const git_repository *repo)
{
GIT_ASSERT_ARG(repo);
return repo->is_worktree;
}
int git_repository_set_bare(git_repository *repo)
{
int error;
git_config *config;
GIT_ASSERT_ARG(repo);
if (repo->is_bare)
return 0;
if ((error = git_repository_config__weakptr(&config, repo)) < 0)
return error;
if ((error = git_config_set_bool(config, "core.bare", true)) < 0)
return error;
if ((error = git_config__update_entry(config, "core.worktree", NULL, true, true)) < 0)
return error;
git__free(repo->workdir);
repo->workdir = NULL;
repo->is_bare = 1;
return 0;
}
int git_repository_head_tree(git_tree **tree, git_repository *repo)
{
git_reference *head;
git_object *obj;
int error;
if ((error = git_repository_head(&head, repo)) < 0)
return error;
if ((error = git_reference_peel(&obj, head, GIT_OBJECT_TREE)) < 0)
goto cleanup;
*tree = (git_tree *)obj;
cleanup:
git_reference_free(head);
return error;
}
int git_repository__set_orig_head(git_repository *repo, const git_oid *orig_head)
{
git_filebuf file = GIT_FILEBUF_INIT;
git_buf file_path = GIT_BUF_INIT;
char orig_head_str[GIT_OID_HEXSZ];
int error = 0;
git_oid_fmt(orig_head_str, orig_head);
if ((error = git_buf_joinpath(&file_path, repo->gitdir, GIT_ORIG_HEAD_FILE)) == 0 &&
(error = git_filebuf_open(&file, file_path.ptr, GIT_FILEBUF_CREATE_LEADING_DIRS, GIT_MERGE_FILE_MODE)) == 0 &&
(error = git_filebuf_printf(&file, "%.*s\n", GIT_OID_HEXSZ, orig_head_str)) == 0)
error = git_filebuf_commit(&file);
if (error < 0)
git_filebuf_cleanup(&file);
git_buf_dispose(&file_path);
return error;
}
int git_repository_message(git_buf *out, git_repository *repo)
{
git_buf path = GIT_BUF_INIT;
struct stat st;
int error;
if ((error = git_buf_sanitize(out)) < 0)
return error;
if (git_buf_joinpath(&path, repo->gitdir, GIT_MERGE_MSG_FILE) < 0)
return -1;
if ((error = p_stat(git_buf_cstr(&path), &st)) < 0) {
if (errno == ENOENT)
error = GIT_ENOTFOUND;
git_error_set(GIT_ERROR_OS, "could not access message file");
} else {
error = git_futils_readbuffer(out, git_buf_cstr(&path));
}
git_buf_dispose(&path);
return error;
}
int git_repository_message_remove(git_repository *repo)
{
git_buf path = GIT_BUF_INIT;
int error;
if (git_buf_joinpath(&path, repo->gitdir, GIT_MERGE_MSG_FILE) < 0)
return -1;
error = p_unlink(git_buf_cstr(&path));
git_buf_dispose(&path);
return error;
}
int git_repository_hashfile(
git_oid *out,
git_repository *repo,
const char *path,
git_object_t type,
const char *as_path)
{
int error;
git_filter_list *fl = NULL;
git_file fd = -1;
uint64_t len;
git_buf full_path = GIT_BUF_INIT;
const char *workdir = git_repository_workdir(repo);
/* as_path can be NULL */
GIT_ASSERT_ARG(out);
GIT_ASSERT_ARG(path);
GIT_ASSERT_ARG(repo);
if ((error = git_path_join_unrooted(&full_path, path, workdir, NULL)) < 0 ||
(error = git_path_validate_workdir_buf(repo, &full_path)) < 0)
return error;
/*
* NULL as_path means that we should derive it from the
* given path.
*/
if (!as_path) {
if (workdir && !git__prefixcmp(full_path.ptr, workdir))
as_path = full_path.ptr + strlen(workdir);
else
as_path = "";
}
/* passing empty string for "as_path" indicated --no-filters */
if (strlen(as_path) > 0) {
error = git_filter_list_load(
&fl, repo, NULL, as_path,
GIT_FILTER_TO_ODB, GIT_FILTER_DEFAULT);
if (error < 0)
return error;
}
/* at this point, error is a count of the number of loaded filters */
fd = git_futils_open_ro(full_path.ptr);
if (fd < 0) {
error = fd;
goto cleanup;
}
if ((error = git_futils_filesize(&len, fd)) < 0)
goto cleanup;
if (!git__is_sizet(len)) {
git_error_set(GIT_ERROR_OS, "file size overflow for 32-bit systems");
error = -1;
goto cleanup;
}
error = git_odb__hashfd_filtered(out, fd, (size_t)len, type, fl);
cleanup:
if (fd >= 0)
p_close(fd);
git_filter_list_free(fl);
git_buf_dispose(&full_path);
return error;
}
static int checkout_message(git_buf *out, git_reference *old, const char *new)
{
git_buf_puts(out, "checkout: moving from ");
if (git_reference_type(old) == GIT_REFERENCE_SYMBOLIC)
git_buf_puts(out, git_reference__shorthand(git_reference_symbolic_target(old)));
else
git_buf_puts(out, git_oid_tostr_s(git_reference_target(old)));
git_buf_puts(out, " to ");
if (git_reference__is_branch(new) ||
git_reference__is_tag(new) ||
git_reference__is_remote(new))
git_buf_puts(out, git_reference__shorthand(new));
else
git_buf_puts(out, new);
if (git_buf_oom(out))
return -1;
return 0;
}
static int detach(git_repository *repo, const git_oid *id, const char *new)
{
int error;
git_buf log_message = GIT_BUF_INIT;
git_object *object = NULL, *peeled = NULL;
git_reference *new_head = NULL, *current = NULL;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(id);
if ((error = git_reference_lookup(¤t, repo, GIT_HEAD_FILE)) < 0)
return error;
if ((error = git_object_lookup(&object, repo, id, GIT_OBJECT_ANY)) < 0)
goto cleanup;
if ((error = git_object_peel(&peeled, object, GIT_OBJECT_COMMIT)) < 0)
goto cleanup;
if (new == NULL)
new = git_oid_tostr_s(git_object_id(peeled));
if ((error = checkout_message(&log_message, current, new)) < 0)
goto cleanup;
error = git_reference_create(&new_head, repo, GIT_HEAD_FILE, git_object_id(peeled), true, git_buf_cstr(&log_message));
cleanup:
git_buf_dispose(&log_message);
git_object_free(object);
git_object_free(peeled);
git_reference_free(current);
git_reference_free(new_head);
return error;
}
int git_repository_set_head(
git_repository *repo,
const char *refname)
{
git_reference *ref = NULL, *current = NULL, *new_head = NULL;
git_buf log_message = GIT_BUF_INIT;
int error;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(refname);
if ((error = git_reference_lookup(¤t, repo, GIT_HEAD_FILE)) < 0)
return error;
if ((error = checkout_message(&log_message, current, refname)) < 0)
goto cleanup;
error = git_reference_lookup(&ref, repo, refname);
if (error < 0 && error != GIT_ENOTFOUND)
goto cleanup;
if (ref && current->type == GIT_REFERENCE_SYMBOLIC && git__strcmp(current->target.symbolic, ref->name) &&
git_reference_is_branch(ref) && git_branch_is_checked_out(ref)) {
git_error_set(GIT_ERROR_REPOSITORY, "cannot set HEAD to reference '%s' as it is the current HEAD "
"of a linked repository.", git_reference_name(ref));
error = -1;
goto cleanup;
}
if (!error) {
if (git_reference_is_branch(ref)) {
error = git_reference_symbolic_create(&new_head, repo, GIT_HEAD_FILE,
git_reference_name(ref), true, git_buf_cstr(&log_message));
} else {
error = detach(repo, git_reference_target(ref),
git_reference_is_tag(ref) || git_reference_is_remote(ref) ? refname : NULL);
}
} else if (git_reference__is_branch(refname)) {
error = git_reference_symbolic_create(&new_head, repo, GIT_HEAD_FILE, refname,
true, git_buf_cstr(&log_message));
}
cleanup:
git_buf_dispose(&log_message);
git_reference_free(current);
git_reference_free(ref);
git_reference_free(new_head);
return error;
}
int git_repository_set_head_detached(
git_repository *repo,
const git_oid *commitish)
{
return detach(repo, commitish, NULL);
}
int git_repository_set_head_detached_from_annotated(
git_repository *repo,
const git_annotated_commit *commitish)
{
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(commitish);
return detach(repo, git_annotated_commit_id(commitish), commitish->description);
}
int git_repository_detach_head(git_repository *repo)
{
git_reference *old_head = NULL, *new_head = NULL, *current = NULL;
git_object *object = NULL;
git_buf log_message = GIT_BUF_INIT;
int error;
GIT_ASSERT_ARG(repo);
if ((error = git_reference_lookup(¤t, repo, GIT_HEAD_FILE)) < 0)
return error;
if ((error = git_repository_head(&old_head, repo)) < 0)
goto cleanup;
if ((error = git_object_lookup(&object, repo, git_reference_target(old_head), GIT_OBJECT_COMMIT)) < 0)
goto cleanup;
if ((error = checkout_message(&log_message, current, git_oid_tostr_s(git_object_id(object)))) < 0)
goto cleanup;
error = git_reference_create(&new_head, repo, GIT_HEAD_FILE, git_reference_target(old_head),
1, git_buf_cstr(&log_message));
cleanup:
git_buf_dispose(&log_message);
git_object_free(object);
git_reference_free(old_head);
git_reference_free(new_head);
git_reference_free(current);
return error;
}
/**
* Loosely ported from git.git
* https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh#L198-289
*/
int git_repository_state(git_repository *repo)
{
git_buf repo_path = GIT_BUF_INIT;
int state = GIT_REPOSITORY_STATE_NONE;
GIT_ASSERT_ARG(repo);
if (git_buf_puts(&repo_path, repo->gitdir) < 0)
return -1;
if (git_path_contains_file(&repo_path, GIT_REBASE_MERGE_INTERACTIVE_FILE))
state = GIT_REPOSITORY_STATE_REBASE_INTERACTIVE;
else if (git_path_contains_dir(&repo_path, GIT_REBASE_MERGE_DIR))
state = GIT_REPOSITORY_STATE_REBASE_MERGE;
else if (git_path_contains_file(&repo_path, GIT_REBASE_APPLY_REBASING_FILE))
state = GIT_REPOSITORY_STATE_REBASE;
else if (git_path_contains_file(&repo_path, GIT_REBASE_APPLY_APPLYING_FILE))
state = GIT_REPOSITORY_STATE_APPLY_MAILBOX;
else if (git_path_contains_dir(&repo_path, GIT_REBASE_APPLY_DIR))
state = GIT_REPOSITORY_STATE_APPLY_MAILBOX_OR_REBASE;
else if (git_path_contains_file(&repo_path, GIT_MERGE_HEAD_FILE))
state = GIT_REPOSITORY_STATE_MERGE;
else if (git_path_contains_file(&repo_path, GIT_REVERT_HEAD_FILE)) {
state = GIT_REPOSITORY_STATE_REVERT;
if (git_path_contains_file(&repo_path, GIT_SEQUENCER_TODO_FILE)) {
state = GIT_REPOSITORY_STATE_REVERT_SEQUENCE;
}
} else if (git_path_contains_file(&repo_path, GIT_CHERRYPICK_HEAD_FILE)) {
state = GIT_REPOSITORY_STATE_CHERRYPICK;
if (git_path_contains_file(&repo_path, GIT_SEQUENCER_TODO_FILE)) {
state = GIT_REPOSITORY_STATE_CHERRYPICK_SEQUENCE;
}
} else if (git_path_contains_file(&repo_path, GIT_BISECT_LOG_FILE))
state = GIT_REPOSITORY_STATE_BISECT;
git_buf_dispose(&repo_path);
return state;
}
int git_repository__cleanup_files(
git_repository *repo, const char *files[], size_t files_len)
{
git_buf buf = GIT_BUF_INIT;
size_t i;
int error;
for (error = 0, i = 0; !error && i < files_len; ++i) {
const char *path;
if (git_buf_joinpath(&buf, repo->gitdir, files[i]) < 0)
return -1;
path = git_buf_cstr(&buf);
if (git_path_isfile(path)) {
error = p_unlink(path);
} else if (git_path_isdir(path)) {
error = git_futils_rmdir_r(path, NULL,
GIT_RMDIR_REMOVE_FILES | GIT_RMDIR_REMOVE_BLOCKERS);
}
git_buf_clear(&buf);
}
git_buf_dispose(&buf);
return error;
}
static const char *state_files[] = {
GIT_MERGE_HEAD_FILE,
GIT_MERGE_MODE_FILE,
GIT_MERGE_MSG_FILE,
GIT_REVERT_HEAD_FILE,
GIT_CHERRYPICK_HEAD_FILE,
GIT_BISECT_LOG_FILE,
GIT_REBASE_MERGE_DIR,
GIT_REBASE_APPLY_DIR,
GIT_SEQUENCER_DIR,
};
int git_repository_state_cleanup(git_repository *repo)
{
GIT_ASSERT_ARG(repo);
return git_repository__cleanup_files(repo, state_files, ARRAY_SIZE(state_files));
}
int git_repository_is_shallow(git_repository *repo)
{
git_buf path = GIT_BUF_INIT;
struct stat st;
int error;
if ((error = git_buf_joinpath(&path, repo->gitdir, "shallow")) < 0)
return error;
error = git_path_lstat(path.ptr, &st);
git_buf_dispose(&path);
if (error == GIT_ENOTFOUND) {
git_error_clear();
return 0;
}
if (error < 0)
return error;
return st.st_size == 0 ? 0 : 1;
}
int git_repository_init_options_init(
git_repository_init_options *opts, unsigned int version)
{
GIT_INIT_STRUCTURE_FROM_TEMPLATE(
opts, version, git_repository_init_options,
GIT_REPOSITORY_INIT_OPTIONS_INIT);
return 0;
}
#ifndef GIT_DEPRECATE_HARD
int git_repository_init_init_options(
git_repository_init_options *opts, unsigned int version)
{
return git_repository_init_options_init(opts, version);
}
#endif
int git_repository_ident(const char **name, const char **email, const git_repository *repo)
{
*name = repo->ident_name;
*email = repo->ident_email;
return 0;
}
int git_repository_set_ident(git_repository *repo, const char *name, const char *email)
{
char *tmp_name = NULL, *tmp_email = NULL;
if (name) {
tmp_name = git__strdup(name);
GIT_ERROR_CHECK_ALLOC(tmp_name);
}
if (email) {
tmp_email = git__strdup(email);
GIT_ERROR_CHECK_ALLOC(tmp_email);
}
tmp_name = git_atomic_swap(repo->ident_name, tmp_name);
tmp_email = git_atomic_swap(repo->ident_email, tmp_email);
git__free(tmp_name);
git__free(tmp_email);
return 0;
}
int git_repository_submodule_cache_all(git_repository *repo)
{
GIT_ASSERT_ARG(repo);
return git_submodule_cache_init(&repo->submodule_cache, repo);
}
int git_repository_submodule_cache_clear(git_repository *repo)
{
int error = 0;
GIT_ASSERT_ARG(repo);
error = git_submodule_cache_free(repo->submodule_cache);
repo->submodule_cache = NULL;
return error;
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/reset.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "commit.h"
#include "tag.h"
#include "merge.h"
#include "diff.h"
#include "annotated_commit.h"
#include "git2/reset.h"
#include "git2/checkout.h"
#include "git2/merge.h"
#include "git2/refs.h"
#define ERROR_MSG "Cannot perform reset"
int git_reset_default(
git_repository *repo,
const git_object *target,
const git_strarray *pathspecs)
{
git_object *commit = NULL;
git_tree *tree = NULL;
git_diff *diff = NULL;
git_diff_options opts = GIT_DIFF_OPTIONS_INIT;
size_t i, max_i;
git_index_entry entry;
int error;
git_index *index = NULL;
GIT_ASSERT_ARG(pathspecs && pathspecs->count > 0);
memset(&entry, 0, sizeof(git_index_entry));
if ((error = git_repository_index(&index, repo)) < 0)
goto cleanup;
if (target) {
if (git_object_owner(target) != repo) {
git_error_set(GIT_ERROR_OBJECT,
"%s_default - The given target does not belong to this repository.", ERROR_MSG);
return -1;
}
if ((error = git_object_peel(&commit, target, GIT_OBJECT_COMMIT)) < 0 ||
(error = git_commit_tree(&tree, (git_commit *)commit)) < 0)
goto cleanup;
}
opts.pathspec = *pathspecs;
opts.flags = GIT_DIFF_REVERSE;
if ((error = git_diff_tree_to_index(
&diff, repo, tree, index, &opts)) < 0)
goto cleanup;
for (i = 0, max_i = git_diff_num_deltas(diff); i < max_i; ++i) {
const git_diff_delta *delta = git_diff_get_delta(diff, i);
GIT_ASSERT(delta->status == GIT_DELTA_ADDED ||
delta->status == GIT_DELTA_MODIFIED ||
delta->status == GIT_DELTA_CONFLICTED ||
delta->status == GIT_DELTA_DELETED);
error = git_index_conflict_remove(index, delta->old_file.path);
if (error < 0) {
if (delta->status == GIT_DELTA_ADDED && error == GIT_ENOTFOUND)
git_error_clear();
else
goto cleanup;
}
if (delta->status == GIT_DELTA_DELETED) {
if ((error = git_index_remove(index, delta->old_file.path, 0)) < 0)
goto cleanup;
} else {
entry.mode = delta->new_file.mode;
git_oid_cpy(&entry.id, &delta->new_file.id);
entry.path = (char *)delta->new_file.path;
if ((error = git_index_add(index, &entry)) < 0)
goto cleanup;
}
}
error = git_index_write(index);
cleanup:
git_object_free(commit);
git_tree_free(tree);
git_index_free(index);
git_diff_free(diff);
return error;
}
static int reset(
git_repository *repo,
const git_object *target,
const char *to,
git_reset_t reset_type,
const git_checkout_options *checkout_opts)
{
git_object *commit = NULL;
git_index *index = NULL;
git_tree *tree = NULL;
int error = 0;
git_checkout_options opts = GIT_CHECKOUT_OPTIONS_INIT;
git_buf log_message = GIT_BUF_INIT;
GIT_ASSERT_ARG(repo);
GIT_ASSERT_ARG(target);
if (checkout_opts)
opts = *checkout_opts;
if (git_object_owner(target) != repo) {
git_error_set(GIT_ERROR_OBJECT,
"%s - The given target does not belong to this repository.", ERROR_MSG);
return -1;
}
if (reset_type != GIT_RESET_SOFT &&
(error = git_repository__ensure_not_bare(repo,
reset_type == GIT_RESET_MIXED ? "reset mixed" : "reset hard")) < 0)
return error;
if ((error = git_object_peel(&commit, target, GIT_OBJECT_COMMIT)) < 0 ||
(error = git_repository_index(&index, repo)) < 0 ||
(error = git_commit_tree(&tree, (git_commit *)commit)) < 0)
goto cleanup;
if (reset_type == GIT_RESET_SOFT &&
(git_repository_state(repo) == GIT_REPOSITORY_STATE_MERGE ||
git_index_has_conflicts(index)))
{
git_error_set(GIT_ERROR_OBJECT, "%s (soft) in the middle of a merge", ERROR_MSG);
error = GIT_EUNMERGED;
goto cleanup;
}
if ((error = git_buf_printf(&log_message, "reset: moving to %s", to)) < 0)
return error;
if (reset_type == GIT_RESET_HARD) {
/* overwrite working directory with the new tree */
opts.checkout_strategy = GIT_CHECKOUT_FORCE;
if ((error = git_checkout_tree(repo, (git_object *)tree, &opts)) < 0)
goto cleanup;
}
/* move HEAD to the new target */
if ((error = git_reference__update_terminal(repo, GIT_HEAD_FILE,
git_object_id(commit), NULL, git_buf_cstr(&log_message))) < 0)
goto cleanup;
if (reset_type > GIT_RESET_SOFT) {
/* reset index to the target content */
if ((error = git_index_read_tree(index, tree)) < 0 ||
(error = git_index_write(index)) < 0)
goto cleanup;
if ((error = git_repository_state_cleanup(repo)) < 0) {
git_error_set(GIT_ERROR_INDEX, "%s - failed to clean up merge data", ERROR_MSG);
goto cleanup;
}
}
cleanup:
git_object_free(commit);
git_index_free(index);
git_tree_free(tree);
git_buf_dispose(&log_message);
return error;
}
int git_reset(
git_repository *repo,
const git_object *target,
git_reset_t reset_type,
const git_checkout_options *checkout_opts)
{
return reset(repo, target, git_oid_tostr_s(git_object_id(target)), reset_type, checkout_opts);
}
int git_reset_from_annotated(
git_repository *repo,
const git_annotated_commit *commit,
git_reset_t reset_type,
const git_checkout_options *checkout_opts)
{
return reset(repo, (git_object *) commit->commit, commit->description, reset_type, checkout_opts);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/pack-objects.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "pack-objects.h"
#include "zstream.h"
#include "delta.h"
#include "iterator.h"
#include "netops.h"
#include "pack.h"
#include "thread.h"
#include "tree.h"
#include "util.h"
#include "revwalk.h"
#include "commit_list.h"
#include "git2/pack.h"
#include "git2/commit.h"
#include "git2/tag.h"
#include "git2/indexer.h"
#include "git2/config.h"
struct unpacked {
git_pobject *object;
void *data;
struct git_delta_index *index;
size_t depth;
};
struct tree_walk_context {
git_packbuilder *pb;
git_buf buf;
};
struct pack_write_context {
git_indexer *indexer;
git_indexer_progress *stats;
};
struct walk_object {
git_oid id;
unsigned int uninteresting:1,
seen:1;
};
#ifdef GIT_THREADS
# define GIT_PACKBUILDER__MUTEX_OP(pb, mtx, op) git_mutex_##op(&(pb)->mtx)
#else
# define GIT_PACKBUILDER__MUTEX_OP(pb, mtx, op) git__noop()
#endif
#define git_packbuilder__cache_lock(pb) GIT_PACKBUILDER__MUTEX_OP(pb, cache_mutex, lock)
#define git_packbuilder__cache_unlock(pb) GIT_PACKBUILDER__MUTEX_OP(pb, cache_mutex, unlock)
#define git_packbuilder__progress_lock(pb) GIT_PACKBUILDER__MUTEX_OP(pb, progress_mutex, lock)
#define git_packbuilder__progress_unlock(pb) GIT_PACKBUILDER__MUTEX_OP(pb, progress_mutex, unlock)
/* The minimal interval between progress updates (in seconds). */
#define MIN_PROGRESS_UPDATE_INTERVAL 0.5
/* Size of the buffer to feed to zlib */
#define COMPRESS_BUFLEN (1024 * 1024)
static unsigned name_hash(const char *name)
{
unsigned c, hash = 0;
if (!name)
return 0;
/*
* This effectively just creates a sortable number from the
* last sixteen non-whitespace characters. Last characters
* count "most", so things that end in ".c" sort together.
*/
while ((c = *name++) != 0) {
if (git__isspace(c))
continue;
hash = (hash >> 2) + (c << 24);
}
return hash;
}
static int packbuilder_config(git_packbuilder *pb)
{
git_config *config;
int ret = 0;
int64_t val;
if ((ret = git_repository_config_snapshot(&config, pb->repo)) < 0)
return ret;
#define config_get(KEY,DST,DFLT) do { \
ret = git_config_get_int64(&val, config, KEY); \
if (!ret) { \
if (!git__is_sizet(val)) { \
git_error_set(GIT_ERROR_CONFIG, \
"configuration value '%s' is too large", KEY); \
ret = -1; \
goto out; \
} \
(DST) = (size_t)val; \
} else if (ret == GIT_ENOTFOUND) { \
(DST) = (DFLT); \
ret = 0; \
} else if (ret < 0) goto out; } while (0)
config_get("pack.deltaCacheSize", pb->max_delta_cache_size,
GIT_PACK_DELTA_CACHE_SIZE);
config_get("pack.deltaCacheLimit", pb->cache_max_small_delta_size,
GIT_PACK_DELTA_CACHE_LIMIT);
config_get("pack.deltaCacheSize", pb->big_file_threshold,
GIT_PACK_BIG_FILE_THRESHOLD);
config_get("pack.windowMemory", pb->window_memory_limit, 0);
#undef config_get
out:
git_config_free(config);
return ret;
}
int git_packbuilder_new(git_packbuilder **out, git_repository *repo)
{
git_packbuilder *pb;
*out = NULL;
pb = git__calloc(1, sizeof(*pb));
GIT_ERROR_CHECK_ALLOC(pb);
if (git_oidmap_new(&pb->object_ix) < 0 ||
git_oidmap_new(&pb->walk_objects) < 0 ||
git_pool_init(&pb->object_pool, sizeof(struct walk_object)) < 0)
goto on_error;
pb->repo = repo;
pb->nr_threads = 1; /* do not spawn any thread by default */
if (git_hash_ctx_init(&pb->ctx) < 0 ||
git_zstream_init(&pb->zstream, GIT_ZSTREAM_DEFLATE) < 0 ||
git_repository_odb(&pb->odb, repo) < 0 ||
packbuilder_config(pb) < 0)
goto on_error;
#ifdef GIT_THREADS
if (git_mutex_init(&pb->cache_mutex) ||
git_mutex_init(&pb->progress_mutex) ||
git_cond_init(&pb->progress_cond))
{
git_error_set(GIT_ERROR_OS, "failed to initialize packbuilder mutex");
goto on_error;
}
#endif
*out = pb;
return 0;
on_error:
git_packbuilder_free(pb);
return -1;
}
unsigned int git_packbuilder_set_threads(git_packbuilder *pb, unsigned int n)
{
GIT_ASSERT_ARG(pb);
#ifdef GIT_THREADS
pb->nr_threads = n;
#else
GIT_UNUSED(n);
GIT_ASSERT(pb->nr_threads == 1);
#endif
return pb->nr_threads;
}
static int rehash(git_packbuilder *pb)
{
git_pobject *po;
size_t i;
git_oidmap_clear(pb->object_ix);
for (i = 0, po = pb->object_list; i < pb->nr_objects; i++, po++) {
if (git_oidmap_set(pb->object_ix, &po->id, po) < 0)
return -1;
}
return 0;
}
int git_packbuilder_insert(git_packbuilder *pb, const git_oid *oid,
const char *name)
{
git_pobject *po;
size_t newsize;
int ret;
GIT_ASSERT_ARG(pb);
GIT_ASSERT_ARG(oid);
/* If the object already exists in the hash table, then we don't
* have any work to do */
if (git_oidmap_exists(pb->object_ix, oid))
return 0;
if (pb->nr_objects >= pb->nr_alloc) {
GIT_ERROR_CHECK_ALLOC_ADD(&newsize, pb->nr_alloc, 1024);
GIT_ERROR_CHECK_ALLOC_MULTIPLY(&newsize, newsize / 2, 3);
if (!git__is_uint32(newsize)) {
git_error_set(GIT_ERROR_NOMEMORY, "packfile too large to fit in memory.");
return -1;
}
pb->nr_alloc = newsize;
pb->object_list = git__reallocarray(pb->object_list,
pb->nr_alloc, sizeof(*po));
GIT_ERROR_CHECK_ALLOC(pb->object_list);
if (rehash(pb) < 0)
return -1;
}
po = pb->object_list + pb->nr_objects;
memset(po, 0x0, sizeof(*po));
if ((ret = git_odb_read_header(&po->size, &po->type, pb->odb, oid)) < 0)
return ret;
pb->nr_objects++;
git_oid_cpy(&po->id, oid);
po->hash = name_hash(name);
if (git_oidmap_set(pb->object_ix, &po->id, po) < 0) {
git_error_set_oom();
return -1;
}
pb->done = false;
if (pb->progress_cb) {
double current_time = git__timer();
double elapsed = current_time - pb->last_progress_report_time;
if (elapsed < 0 || elapsed >= MIN_PROGRESS_UPDATE_INTERVAL) {
pb->last_progress_report_time = current_time;
ret = pb->progress_cb(
GIT_PACKBUILDER_ADDING_OBJECTS,
pb->nr_objects, 0, pb->progress_cb_payload);
if (ret)
return git_error_set_after_callback(ret);
}
}
return 0;
}
static int get_delta(void **out, git_odb *odb, git_pobject *po)
{
git_odb_object *src = NULL, *trg = NULL;
size_t delta_size;
void *delta_buf;
int error;
*out = NULL;
if (git_odb_read(&src, odb, &po->delta->id) < 0 ||
git_odb_read(&trg, odb, &po->id) < 0)
goto on_error;
error = git_delta(&delta_buf, &delta_size,
git_odb_object_data(src), git_odb_object_size(src),
git_odb_object_data(trg), git_odb_object_size(trg),
0);
if (error < 0 && error != GIT_EBUFS)
goto on_error;
if (error == GIT_EBUFS || delta_size != po->delta_size) {
git_error_set(GIT_ERROR_INVALID, "delta size changed");
goto on_error;
}
*out = delta_buf;
git_odb_object_free(src);
git_odb_object_free(trg);
return 0;
on_error:
git_odb_object_free(src);
git_odb_object_free(trg);
return -1;
}
static int write_object(
git_packbuilder *pb,
git_pobject *po,
int (*write_cb)(void *buf, size_t size, void *cb_data),
void *cb_data)
{
git_odb_object *obj = NULL;
git_object_t type;
unsigned char hdr[10], *zbuf = NULL;
void *data = NULL;
size_t hdr_len, zbuf_len = COMPRESS_BUFLEN, data_len;
int error;
/*
* If we have a delta base, let's use the delta to save space.
* Otherwise load the whole object. 'data' ends up pointing to
* whatever data we want to put into the packfile.
*/
if (po->delta) {
if (po->delta_data)
data = po->delta_data;
else if ((error = get_delta(&data, pb->odb, po)) < 0)
goto done;
data_len = po->delta_size;
type = GIT_OBJECT_REF_DELTA;
} else {
if ((error = git_odb_read(&obj, pb->odb, &po->id)) < 0)
goto done;
data = (void *)git_odb_object_data(obj);
data_len = git_odb_object_size(obj);
type = git_odb_object_type(obj);
}
/* Write header */
if ((error = git_packfile__object_header(&hdr_len, hdr, data_len, type)) < 0 ||
(error = write_cb(hdr, hdr_len, cb_data)) < 0 ||
(error = git_hash_update(&pb->ctx, hdr, hdr_len)) < 0)
goto done;
if (type == GIT_OBJECT_REF_DELTA) {
if ((error = write_cb(po->delta->id.id, GIT_OID_RAWSZ, cb_data)) < 0 ||
(error = git_hash_update(&pb->ctx, po->delta->id.id, GIT_OID_RAWSZ)) < 0)
goto done;
}
/* Write data */
if (po->z_delta_size) {
data_len = po->z_delta_size;
if ((error = write_cb(data, data_len, cb_data)) < 0 ||
(error = git_hash_update(&pb->ctx, data, data_len)) < 0)
goto done;
} else {
zbuf = git__malloc(zbuf_len);
GIT_ERROR_CHECK_ALLOC(zbuf);
git_zstream_reset(&pb->zstream);
if ((error = git_zstream_set_input(&pb->zstream, data, data_len)) < 0)
goto done;
while (!git_zstream_done(&pb->zstream)) {
if ((error = git_zstream_get_output(zbuf, &zbuf_len, &pb->zstream)) < 0 ||
(error = write_cb(zbuf, zbuf_len, cb_data)) < 0 ||
(error = git_hash_update(&pb->ctx, zbuf, zbuf_len)) < 0)
goto done;
zbuf_len = COMPRESS_BUFLEN; /* reuse buffer */
}
}
/*
* If po->delta is true, data is a delta and it is our
* responsibility to free it (otherwise it's a git_object's
* data). We set po->delta_data to NULL in case we got the
* data from there instead of get_delta(). If we didn't,
* there's no harm.
*/
if (po->delta) {
git__free(data);
po->delta_data = NULL;
}
pb->nr_written++;
done:
git__free(zbuf);
git_odb_object_free(obj);
return error;
}
enum write_one_status {
WRITE_ONE_SKIP = -1, /* already written */
WRITE_ONE_BREAK = 0, /* writing this will bust the limit; not written */
WRITE_ONE_WRITTEN = 1, /* normal */
WRITE_ONE_RECURSIVE = 2 /* already scheduled to be written */
};
static int write_one(
enum write_one_status *status,
git_packbuilder *pb,
git_pobject *po,
int (*write_cb)(void *buf, size_t size, void *cb_data),
void *cb_data)
{
int error;
if (po->recursing) {
*status = WRITE_ONE_RECURSIVE;
return 0;
} else if (po->written) {
*status = WRITE_ONE_SKIP;
return 0;
}
if (po->delta) {
po->recursing = 1;
if ((error = write_one(status, pb, po->delta, write_cb, cb_data)) < 0)
return error;
/* we cannot depend on this one */
if (*status == WRITE_ONE_RECURSIVE)
po->delta = NULL;
}
*status = WRITE_ONE_WRITTEN;
po->written = 1;
po->recursing = 0;
return write_object(pb, po, write_cb, cb_data);
}
GIT_INLINE(void) add_to_write_order(git_pobject **wo, size_t *endp,
git_pobject *po)
{
if (po->filled)
return;
wo[(*endp)++] = po;
po->filled = 1;
}
static void add_descendants_to_write_order(git_pobject **wo, size_t *endp,
git_pobject *po)
{
int add_to_order = 1;
while (po) {
if (add_to_order) {
git_pobject *s;
/* add this node... */
add_to_write_order(wo, endp, po);
/* all its siblings... */
for (s = po->delta_sibling; s; s = s->delta_sibling) {
add_to_write_order(wo, endp, s);
}
}
/* drop down a level to add left subtree nodes if possible */
if (po->delta_child) {
add_to_order = 1;
po = po->delta_child;
} else {
add_to_order = 0;
/* our sibling might have some children, it is next */
if (po->delta_sibling) {
po = po->delta_sibling;
continue;
}
/* go back to our parent node */
po = po->delta;
while (po && !po->delta_sibling) {
/* we're on the right side of a subtree, keep
* going up until we can go right again */
po = po->delta;
}
if (!po) {
/* done- we hit our original root node */
return;
}
/* pass it off to sibling at this level */
po = po->delta_sibling;
}
};
}
static void add_family_to_write_order(git_pobject **wo, size_t *endp,
git_pobject *po)
{
git_pobject *root;
for (root = po; root->delta; root = root->delta)
; /* nothing */
add_descendants_to_write_order(wo, endp, root);
}
static int cb_tag_foreach(const char *name, git_oid *oid, void *data)
{
git_packbuilder *pb = data;
git_pobject *po;
GIT_UNUSED(name);
if ((po = git_oidmap_get(pb->object_ix, oid)) == NULL)
return 0;
po->tagged = 1;
/* TODO: peel objects */
return 0;
}
static int compute_write_order(git_pobject ***out, git_packbuilder *pb)
{
size_t i, wo_end, last_untagged;
git_pobject **wo;
*out = NULL;
if (!pb->nr_objects)
return 0;
if ((wo = git__mallocarray(pb->nr_objects, sizeof(*wo))) == NULL)
return -1;
for (i = 0; i < pb->nr_objects; i++) {
git_pobject *po = pb->object_list + i;
po->tagged = 0;
po->filled = 0;
po->delta_child = NULL;
po->delta_sibling = NULL;
}
/*
* Fully connect delta_child/delta_sibling network.
* Make sure delta_sibling is sorted in the original
* recency order.
*/
for (i = pb->nr_objects; i > 0;) {
git_pobject *po = &pb->object_list[--i];
if (!po->delta)
continue;
/* Mark me as the first child */
po->delta_sibling = po->delta->delta_child;
po->delta->delta_child = po;
}
/*
* Mark objects that are at the tip of tags.
*/
if (git_tag_foreach(pb->repo, &cb_tag_foreach, pb) < 0) {
git__free(wo);
return -1;
}
/*
* Give the objects in the original recency order until
* we see a tagged tip.
*/
for (i = wo_end = 0; i < pb->nr_objects; i++) {
git_pobject *po = pb->object_list + i;
if (po->tagged)
break;
add_to_write_order(wo, &wo_end, po);
}
last_untagged = i;
/*
* Then fill all the tagged tips.
*/
for (; i < pb->nr_objects; i++) {
git_pobject *po = pb->object_list + i;
if (po->tagged)
add_to_write_order(wo, &wo_end, po);
}
/*
* And then all remaining commits and tags.
*/
for (i = last_untagged; i < pb->nr_objects; i++) {
git_pobject *po = pb->object_list + i;
if (po->type != GIT_OBJECT_COMMIT &&
po->type != GIT_OBJECT_TAG)
continue;
add_to_write_order(wo, &wo_end, po);
}
/*
* And then all the trees.
*/
for (i = last_untagged; i < pb->nr_objects; i++) {
git_pobject *po = pb->object_list + i;
if (po->type != GIT_OBJECT_TREE)
continue;
add_to_write_order(wo, &wo_end, po);
}
/*
* Finally all the rest in really tight order
*/
for (i = last_untagged; i < pb->nr_objects; i++) {
git_pobject *po = pb->object_list + i;
if (!po->filled)
add_family_to_write_order(wo, &wo_end, po);
}
if (wo_end != pb->nr_objects) {
git__free(wo);
git_error_set(GIT_ERROR_INVALID, "invalid write order");
return -1;
}
*out = wo;
return 0;
}
static int write_pack(git_packbuilder *pb,
int (*write_cb)(void *buf, size_t size, void *cb_data),
void *cb_data)
{
git_pobject **write_order;
git_pobject *po;
enum write_one_status status;
struct git_pack_header ph;
git_oid entry_oid;
size_t i = 0;
int error;
if ((error = compute_write_order(&write_order, pb)) < 0)
return error;
if (!git__is_uint32(pb->nr_objects)) {
git_error_set(GIT_ERROR_INVALID, "too many objects");
error = -1;
goto done;
}
/* Write pack header */
ph.hdr_signature = htonl(PACK_SIGNATURE);
ph.hdr_version = htonl(PACK_VERSION);
ph.hdr_entries = htonl(pb->nr_objects);
if ((error = write_cb(&ph, sizeof(ph), cb_data)) < 0 ||
(error = git_hash_update(&pb->ctx, &ph, sizeof(ph))) < 0)
goto done;
pb->nr_remaining = pb->nr_objects;
do {
pb->nr_written = 0;
for ( ; i < pb->nr_objects; ++i) {
po = write_order[i];
if ((error = write_one(&status, pb, po, write_cb, cb_data)) < 0)
goto done;
}
pb->nr_remaining -= pb->nr_written;
} while (pb->nr_remaining && i < pb->nr_objects);
if ((error = git_hash_final(&entry_oid, &pb->ctx)) < 0)
goto done;
error = write_cb(entry_oid.id, GIT_OID_RAWSZ, cb_data);
done:
/* if callback cancelled writing, we must still free delta_data */
for ( ; i < pb->nr_objects; ++i) {
po = write_order[i];
if (po->delta_data) {
git__free(po->delta_data);
po->delta_data = NULL;
}
}
git__free(write_order);
return error;
}
static int write_pack_buf(void *buf, size_t size, void *data)
{
git_buf *b = (git_buf *)data;
return git_buf_put(b, buf, size);
}
static int type_size_sort(const void *_a, const void *_b)
{
const git_pobject *a = (git_pobject *)_a;
const git_pobject *b = (git_pobject *)_b;
if (a->type > b->type)
return -1;
if (a->type < b->type)
return 1;
if (a->hash > b->hash)
return -1;
if (a->hash < b->hash)
return 1;
/*
* TODO
*
if (a->preferred_base > b->preferred_base)
return -1;
if (a->preferred_base < b->preferred_base)
return 1;
*/
if (a->size > b->size)
return -1;
if (a->size < b->size)
return 1;
return a < b ? -1 : (a > b); /* newest first */
}
static int delta_cacheable(
git_packbuilder *pb,
size_t src_size,
size_t trg_size,
size_t delta_size)
{
size_t new_size;
if (git__add_sizet_overflow(&new_size, pb->delta_cache_size, delta_size))
return 0;
if (pb->max_delta_cache_size && new_size > pb->max_delta_cache_size)
return 0;
if (delta_size < pb->cache_max_small_delta_size)
return 1;
/* cache delta, if objects are large enough compared to delta size */
if ((src_size >> 20) + (trg_size >> 21) > (delta_size >> 10))
return 1;
return 0;
}
static int try_delta(git_packbuilder *pb, struct unpacked *trg,
struct unpacked *src, size_t max_depth,
size_t *mem_usage, int *ret)
{
git_pobject *trg_object = trg->object;
git_pobject *src_object = src->object;
git_odb_object *obj;
size_t trg_size, src_size, delta_size, sizediff, max_size, sz;
size_t ref_depth;
void *delta_buf;
/* Don't bother doing diffs between different types */
if (trg_object->type != src_object->type) {
*ret = -1;
return 0;
}
*ret = 0;
/* TODO: support reuse-delta */
/* Let's not bust the allowed depth. */
if (src->depth >= max_depth)
return 0;
/* Now some size filtering heuristics. */
trg_size = trg_object->size;
if (!trg_object->delta) {
max_size = trg_size/2 - 20;
ref_depth = 1;
} else {
max_size = trg_object->delta_size;
ref_depth = trg->depth;
}
max_size = (uint64_t)max_size * (max_depth - src->depth) /
(max_depth - ref_depth + 1);
if (max_size == 0)
return 0;
src_size = src_object->size;
sizediff = src_size < trg_size ? trg_size - src_size : 0;
if (sizediff >= max_size)
return 0;
if (trg_size < src_size / 32)
return 0;
/* Load data if not already done */
if (!trg->data) {
if (git_odb_read(&obj, pb->odb, &trg_object->id) < 0)
return -1;
sz = git_odb_object_size(obj);
trg->data = git__malloc(sz);
GIT_ERROR_CHECK_ALLOC(trg->data);
memcpy(trg->data, git_odb_object_data(obj), sz);
git_odb_object_free(obj);
if (sz != trg_size) {
git_error_set(GIT_ERROR_INVALID,
"inconsistent target object length");
return -1;
}
*mem_usage += sz;
}
if (!src->data) {
size_t obj_sz;
if (git_odb_read(&obj, pb->odb, &src_object->id) < 0 ||
!git__is_ulong(obj_sz = git_odb_object_size(obj)))
return -1;
sz = obj_sz;
src->data = git__malloc(sz);
GIT_ERROR_CHECK_ALLOC(src->data);
memcpy(src->data, git_odb_object_data(obj), sz);
git_odb_object_free(obj);
if (sz != src_size) {
git_error_set(GIT_ERROR_INVALID,
"inconsistent source object length");
return -1;
}
*mem_usage += sz;
}
if (!src->index) {
if (git_delta_index_init(&src->index, src->data, src_size) < 0)
return 0; /* suboptimal pack - out of memory */
*mem_usage += git_delta_index_size(src->index);
}
if (git_delta_create_from_index(&delta_buf, &delta_size, src->index, trg->data, trg_size,
max_size) < 0)
return 0;
if (trg_object->delta) {
/* Prefer only shallower same-sized deltas. */
if (delta_size == trg_object->delta_size &&
src->depth + 1 >= trg->depth) {
git__free(delta_buf);
return 0;
}
}
GIT_ASSERT(git_packbuilder__cache_lock(pb) == 0);
if (trg_object->delta_data) {
git__free(trg_object->delta_data);
GIT_ASSERT(pb->delta_cache_size >= trg_object->delta_size);
pb->delta_cache_size -= trg_object->delta_size;
trg_object->delta_data = NULL;
}
if (delta_cacheable(pb, src_size, trg_size, delta_size)) {
bool overflow = git__add_sizet_overflow(
&pb->delta_cache_size, pb->delta_cache_size, delta_size);
GIT_ASSERT(git_packbuilder__cache_unlock(pb) == 0);
if (overflow) {
git__free(delta_buf);
return -1;
}
trg_object->delta_data = git__realloc(delta_buf, delta_size);
GIT_ERROR_CHECK_ALLOC(trg_object->delta_data);
} else {
/* create delta when writing the pack */
GIT_ASSERT(git_packbuilder__cache_unlock(pb) == 0);
git__free(delta_buf);
}
trg_object->delta = src_object;
trg_object->delta_size = delta_size;
trg->depth = src->depth + 1;
*ret = 1;
return 0;
}
static size_t check_delta_limit(git_pobject *me, size_t n)
{
git_pobject *child = me->delta_child;
size_t m = n;
while (child) {
size_t c = check_delta_limit(child, n + 1);
if (m < c)
m = c;
child = child->delta_sibling;
}
return m;
}
static size_t free_unpacked(struct unpacked *n)
{
size_t freed_mem = 0;
if (n->index) {
freed_mem += git_delta_index_size(n->index);
git_delta_index_free(n->index);
}
n->index = NULL;
if (n->data) {
freed_mem += n->object->size;
git__free(n->data);
n->data = NULL;
}
n->object = NULL;
n->depth = 0;
return freed_mem;
}
static int report_delta_progress(
git_packbuilder *pb, uint32_t count, bool force)
{
int ret;
if (pb->progress_cb) {
double current_time = git__timer();
double elapsed = current_time - pb->last_progress_report_time;
if (force || elapsed < 0 || elapsed >= MIN_PROGRESS_UPDATE_INTERVAL) {
pb->last_progress_report_time = current_time;
ret = pb->progress_cb(
GIT_PACKBUILDER_DELTAFICATION,
count, pb->nr_objects, pb->progress_cb_payload);
if (ret)
return git_error_set_after_callback(ret);
}
}
return 0;
}
static int find_deltas(git_packbuilder *pb, git_pobject **list,
size_t *list_size, size_t window, size_t depth)
{
git_pobject *po;
git_buf zbuf = GIT_BUF_INIT;
struct unpacked *array;
size_t idx = 0, count = 0;
size_t mem_usage = 0;
size_t i;
int error = -1;
array = git__calloc(window, sizeof(struct unpacked));
GIT_ERROR_CHECK_ALLOC(array);
for (;;) {
struct unpacked *n = array + idx;
size_t max_depth, j, best_base = SIZE_MAX;
GIT_ASSERT(git_packbuilder__progress_lock(pb) == 0);
if (!*list_size) {
GIT_ASSERT(git_packbuilder__progress_unlock(pb) == 0);
break;
}
pb->nr_deltified += 1;
report_delta_progress(pb, pb->nr_deltified, false);
po = *list++;
(*list_size)--;
GIT_ASSERT(git_packbuilder__progress_unlock(pb) == 0);
mem_usage -= free_unpacked(n);
n->object = po;
while (pb->window_memory_limit &&
mem_usage > pb->window_memory_limit &&
count > 1) {
size_t tail = (idx + window - count) % window;
mem_usage -= free_unpacked(array + tail);
count--;
}
/*
* If the current object is at pack edge, take the depth the
* objects that depend on the current object into account
* otherwise they would become too deep.
*/
max_depth = depth;
if (po->delta_child) {
size_t delta_limit = check_delta_limit(po, 0);
if (delta_limit > max_depth)
goto next;
max_depth -= delta_limit;
}
j = window;
while (--j > 0) {
int ret;
size_t other_idx = idx + j;
struct unpacked *m;
if (other_idx >= window)
other_idx -= window;
m = array + other_idx;
if (!m->object)
break;
if (try_delta(pb, n, m, max_depth, &mem_usage, &ret) < 0)
goto on_error;
if (ret < 0)
break;
else if (ret > 0)
best_base = other_idx;
}
/*
* If we decided to cache the delta data, then it is best
* to compress it right away. First because we have to do
* it anyway, and doing it here while we're threaded will
* save a lot of time in the non threaded write phase,
* as well as allow for caching more deltas within
* the same cache size limit.
* ...
* But only if not writing to stdout, since in that case
* the network is most likely throttling writes anyway,
* and therefore it is best to go to the write phase ASAP
* instead, as we can afford spending more time compressing
* between writes at that moment.
*/
if (po->delta_data) {
if (git_zstream_deflatebuf(&zbuf, po->delta_data, po->delta_size) < 0)
goto on_error;
git__free(po->delta_data);
po->delta_data = git__malloc(zbuf.size);
GIT_ERROR_CHECK_ALLOC(po->delta_data);
memcpy(po->delta_data, zbuf.ptr, zbuf.size);
po->z_delta_size = zbuf.size;
git_buf_clear(&zbuf);
GIT_ASSERT(git_packbuilder__cache_lock(pb) == 0);
pb->delta_cache_size -= po->delta_size;
pb->delta_cache_size += po->z_delta_size;
GIT_ASSERT(git_packbuilder__cache_unlock(pb) == 0);
}
/*
* If we made n a delta, and if n is already at max
* depth, leaving it in the window is pointless. we
* should evict it first.
*/
if (po->delta && max_depth <= n->depth)
continue;
/*
* Move the best delta base up in the window, after the
* currently deltified object, to keep it longer. It will
* be the first base object to be attempted next.
*/
if (po->delta) {
struct unpacked swap = array[best_base];
size_t dist = (window + idx - best_base) % window;
size_t dst = best_base;
while (dist--) {
size_t src = (dst + 1) % window;
array[dst] = array[src];
dst = src;
}
array[dst] = swap;
}
next:
idx++;
if (count + 1 < window)
count++;
if (idx >= window)
idx = 0;
}
error = 0;
on_error:
for (i = 0; i < window; ++i) {
git__free(array[i].index);
git__free(array[i].data);
}
git__free(array);
git_buf_dispose(&zbuf);
return error;
}
#ifdef GIT_THREADS
struct thread_params {
git_thread thread;
git_packbuilder *pb;
git_pobject **list;
git_cond cond;
git_mutex mutex;
size_t list_size;
size_t remaining;
size_t window;
size_t depth;
size_t working;
size_t data_ready;
};
static void *threaded_find_deltas(void *arg)
{
struct thread_params *me = arg;
while (me->remaining) {
if (find_deltas(me->pb, me->list, &me->remaining,
me->window, me->depth) < 0) {
; /* TODO */
}
GIT_ASSERT_WITH_RETVAL(git_packbuilder__progress_lock(me->pb) == 0, NULL);
me->working = 0;
git_cond_signal(&me->pb->progress_cond);
GIT_ASSERT_WITH_RETVAL(git_packbuilder__progress_unlock(me->pb) == 0, NULL);
if (git_mutex_lock(&me->mutex)) {
git_error_set(GIT_ERROR_THREAD, "unable to lock packfile condition mutex");
return NULL;
}
while (!me->data_ready)
git_cond_wait(&me->cond, &me->mutex);
/*
* We must not set ->data_ready before we wait on the
* condition because the main thread may have set it to 1
* before we get here. In order to be sure that new
* work is available if we see 1 in ->data_ready, it
* was initialized to 0 before this thread was spawned
* and we reset it to 0 right away.
*/
me->data_ready = 0;
git_mutex_unlock(&me->mutex);
}
/* leave ->working 1 so that this doesn't get more work assigned */
return NULL;
}
static int ll_find_deltas(git_packbuilder *pb, git_pobject **list,
size_t list_size, size_t window, size_t depth)
{
struct thread_params *p;
size_t i;
int ret, active_threads = 0;
if (!pb->nr_threads)
pb->nr_threads = git__online_cpus();
if (pb->nr_threads <= 1) {
find_deltas(pb, list, &list_size, window, depth);
return 0;
}
p = git__mallocarray(pb->nr_threads, sizeof(*p));
GIT_ERROR_CHECK_ALLOC(p);
/* Partition the work among the threads */
for (i = 0; i < pb->nr_threads; ++i) {
size_t sub_size = list_size / (pb->nr_threads - i);
/* don't use too small segments or no deltas will be found */
if (sub_size < 2*window && i+1 < pb->nr_threads)
sub_size = 0;
p[i].pb = pb;
p[i].window = window;
p[i].depth = depth;
p[i].working = 1;
p[i].data_ready = 0;
/* try to split chunks on "path" boundaries */
while (sub_size && sub_size < list_size &&
list[sub_size]->hash &&
list[sub_size]->hash == list[sub_size-1]->hash)
sub_size++;
p[i].list = list;
p[i].list_size = sub_size;
p[i].remaining = sub_size;
list += sub_size;
list_size -= sub_size;
}
/* Start work threads */
for (i = 0; i < pb->nr_threads; ++i) {
if (!p[i].list_size)
continue;
git_mutex_init(&p[i].mutex);
git_cond_init(&p[i].cond);
ret = git_thread_create(&p[i].thread,
threaded_find_deltas, &p[i]);
if (ret) {
git_error_set(GIT_ERROR_THREAD, "unable to create thread");
return -1;
}
active_threads++;
}
/*
* Now let's wait for work completion. Each time a thread is done
* with its work, we steal half of the remaining work from the
* thread with the largest number of unprocessed objects and give
* it to that newly idle thread. This ensure good load balancing
* until the remaining object list segments are simply too short
* to be worth splitting anymore.
*/
while (active_threads) {
struct thread_params *target = NULL;
struct thread_params *victim = NULL;
size_t sub_size = 0;
/* Start by locating a thread that has transitioned its
* 'working' flag from 1 -> 0. This indicates that it is
* ready to receive more work using our work-stealing
* algorithm. */
GIT_ASSERT(git_packbuilder__progress_lock(pb) == 0);
for (;;) {
for (i = 0; !target && i < pb->nr_threads; i++)
if (!p[i].working)
target = &p[i];
if (target)
break;
git_cond_wait(&pb->progress_cond, &pb->progress_mutex);
}
/* At this point we hold the progress lock and have located
* a thread to receive more work. We still need to locate a
* thread from which to steal work (the victim). */
for (i = 0; i < pb->nr_threads; i++)
if (p[i].remaining > 2*window &&
(!victim || victim->remaining < p[i].remaining))
victim = &p[i];
if (victim) {
sub_size = victim->remaining / 2;
list = victim->list + victim->list_size - sub_size;
while (sub_size && list[0]->hash &&
list[0]->hash == list[-1]->hash) {
list++;
sub_size--;
}
if (!sub_size) {
/*
* It is possible for some "paths" to have
* so many objects that no hash boundary
* might be found. Let's just steal the
* exact half in that case.
*/
sub_size = victim->remaining / 2;
list -= sub_size;
}
target->list = list;
victim->list_size -= sub_size;
victim->remaining -= sub_size;
}
target->list_size = sub_size;
target->remaining = sub_size;
target->working = 1;
GIT_ASSERT(git_packbuilder__progress_unlock(pb) == 0);
if (git_mutex_lock(&target->mutex)) {
git_error_set(GIT_ERROR_THREAD, "unable to lock packfile condition mutex");
git__free(p);
return -1;
}
target->data_ready = 1;
git_cond_signal(&target->cond);
git_mutex_unlock(&target->mutex);
if (!sub_size) {
git_thread_join(&target->thread, NULL);
git_cond_free(&target->cond);
git_mutex_free(&target->mutex);
active_threads--;
}
}
git__free(p);
return 0;
}
#else
#define ll_find_deltas(pb, l, ls, w, d) find_deltas(pb, l, &ls, w, d)
#endif
static int prepare_pack(git_packbuilder *pb)
{
git_pobject **delta_list;
size_t i, n = 0;
if (pb->nr_objects == 0 || pb->done)
return 0; /* nothing to do */
/*
* Although we do not report progress during deltafication, we
* at least report that we are in the deltafication stage
*/
if (pb->progress_cb)
pb->progress_cb(GIT_PACKBUILDER_DELTAFICATION, 0, pb->nr_objects, pb->progress_cb_payload);
delta_list = git__mallocarray(pb->nr_objects, sizeof(*delta_list));
GIT_ERROR_CHECK_ALLOC(delta_list);
for (i = 0; i < pb->nr_objects; ++i) {
git_pobject *po = pb->object_list + i;
/* Make sure the item is within our size limits */
if (po->size < 50 || po->size > pb->big_file_threshold)
continue;
delta_list[n++] = po;
}
if (n > 1) {
git__tsort((void **)delta_list, n, type_size_sort);
if (ll_find_deltas(pb, delta_list, n,
GIT_PACK_WINDOW + 1,
GIT_PACK_DEPTH) < 0) {
git__free(delta_list);
return -1;
}
}
report_delta_progress(pb, pb->nr_objects, true);
pb->done = true;
git__free(delta_list);
return 0;
}
#define PREPARE_PACK if (prepare_pack(pb) < 0) { return -1; }
int git_packbuilder_foreach(git_packbuilder *pb, int (*cb)(void *buf, size_t size, void *payload), void *payload)
{
PREPARE_PACK;
return write_pack(pb, cb, payload);
}
int git_packbuilder_write_buf(git_buf *buf, git_packbuilder *pb)
{
int error;
if ((error = git_buf_sanitize(buf)) < 0)
return error;
PREPARE_PACK;
return write_pack(pb, &write_pack_buf, buf);
}
static int write_cb(void *buf, size_t len, void *payload)
{
struct pack_write_context *ctx = payload;
return git_indexer_append(ctx->indexer, buf, len, ctx->stats);
}
int git_packbuilder_write(
git_packbuilder *pb,
const char *path,
unsigned int mode,
git_indexer_progress_cb progress_cb,
void *progress_cb_payload)
{
int error = -1;
git_buf object_path = GIT_BUF_INIT;
git_indexer_options opts = GIT_INDEXER_OPTIONS_INIT;
git_indexer *indexer = NULL;
git_indexer_progress stats;
struct pack_write_context ctx;
int t;
PREPARE_PACK;
if (path == NULL) {
if ((error = git_repository_item_path(&object_path, pb->repo, GIT_REPOSITORY_ITEM_OBJECTS)) < 0)
goto cleanup;
if ((error = git_buf_joinpath(&object_path, git_buf_cstr(&object_path), "pack")) < 0)
goto cleanup;
path = git_buf_cstr(&object_path);
}
opts.progress_cb = progress_cb;
opts.progress_cb_payload = progress_cb_payload;
if ((error = git_indexer_new(&indexer, path, mode, pb->odb, &opts)) < 0)
goto cleanup;
if (!git_repository__configmap_lookup(&t, pb->repo, GIT_CONFIGMAP_FSYNCOBJECTFILES) && t)
git_indexer__set_fsync(indexer, 1);
ctx.indexer = indexer;
ctx.stats = &stats;
if ((error = git_packbuilder_foreach(pb, write_cb, &ctx)) < 0)
goto cleanup;
if ((error = git_indexer_commit(indexer, &stats)) < 0)
goto cleanup;
git_oid_cpy(&pb->pack_oid, git_indexer_hash(indexer));
cleanup:
git_indexer_free(indexer);
git_buf_dispose(&object_path);
return error;
}
#undef PREPARE_PACK
const git_oid *git_packbuilder_hash(git_packbuilder *pb)
{
return &pb->pack_oid;
}
static int cb_tree_walk(
const char *root, const git_tree_entry *entry, void *payload)
{
int error;
struct tree_walk_context *ctx = payload;
/* A commit inside a tree represents a submodule commit and should be skipped. */
if (git_tree_entry_type(entry) == GIT_OBJECT_COMMIT)
return 0;
if (!(error = git_buf_sets(&ctx->buf, root)) &&
!(error = git_buf_puts(&ctx->buf, git_tree_entry_name(entry))))
error = git_packbuilder_insert(
ctx->pb, git_tree_entry_id(entry), git_buf_cstr(&ctx->buf));
return error;
}
int git_packbuilder_insert_commit(git_packbuilder *pb, const git_oid *oid)
{
git_commit *commit;
if (git_commit_lookup(&commit, pb->repo, oid) < 0 ||
git_packbuilder_insert(pb, oid, NULL) < 0)
return -1;
if (git_packbuilder_insert_tree(pb, git_commit_tree_id(commit)) < 0)
return -1;
git_commit_free(commit);
return 0;
}
int git_packbuilder_insert_tree(git_packbuilder *pb, const git_oid *oid)
{
int error;
git_tree *tree = NULL;
struct tree_walk_context context = { pb, GIT_BUF_INIT };
if (!(error = git_tree_lookup(&tree, pb->repo, oid)) &&
!(error = git_packbuilder_insert(pb, oid, NULL)))
error = git_tree_walk(tree, GIT_TREEWALK_PRE, cb_tree_walk, &context);
git_tree_free(tree);
git_buf_dispose(&context.buf);
return error;
}
int git_packbuilder_insert_recur(git_packbuilder *pb, const git_oid *id, const char *name)
{
git_object *obj;
int error;
GIT_ASSERT_ARG(pb);
GIT_ASSERT_ARG(id);
if ((error = git_object_lookup(&obj, pb->repo, id, GIT_OBJECT_ANY)) < 0)
return error;
switch (git_object_type(obj)) {
case GIT_OBJECT_BLOB:
error = git_packbuilder_insert(pb, id, name);
break;
case GIT_OBJECT_TREE:
error = git_packbuilder_insert_tree(pb, id);
break;
case GIT_OBJECT_COMMIT:
error = git_packbuilder_insert_commit(pb, id);
break;
case GIT_OBJECT_TAG:
if ((error = git_packbuilder_insert(pb, id, name)) < 0)
goto cleanup;
error = git_packbuilder_insert_recur(pb, git_tag_target_id((git_tag *) obj), NULL);
break;
default:
git_error_set(GIT_ERROR_INVALID, "unknown object type");
error = -1;
}
cleanup:
git_object_free(obj);
return error;
}
size_t git_packbuilder_object_count(git_packbuilder *pb)
{
return pb->nr_objects;
}
size_t git_packbuilder_written(git_packbuilder *pb)
{
return pb->nr_written;
}
static int lookup_walk_object(struct walk_object **out, git_packbuilder *pb, const git_oid *id)
{
struct walk_object *obj;
obj = git_pool_mallocz(&pb->object_pool, 1);
if (!obj) {
git_error_set_oom();
return -1;
}
git_oid_cpy(&obj->id, id);
*out = obj;
return 0;
}
static int retrieve_object(struct walk_object **out, git_packbuilder *pb, const git_oid *id)
{
struct walk_object *obj;
int error;
if ((obj = git_oidmap_get(pb->walk_objects, id)) == NULL) {
if ((error = lookup_walk_object(&obj, pb, id)) < 0)
return error;
if ((error = git_oidmap_set(pb->walk_objects, &obj->id, obj)) < 0)
return error;
}
*out = obj;
return 0;
}
static int mark_blob_uninteresting(git_packbuilder *pb, const git_oid *id)
{
int error;
struct walk_object *obj;
if ((error = retrieve_object(&obj, pb, id)) < 0)
return error;
obj->uninteresting = 1;
return 0;
}
static int mark_tree_uninteresting(git_packbuilder *pb, const git_oid *id)
{
struct walk_object *obj;
git_tree *tree;
int error;
size_t i;
if ((error = retrieve_object(&obj, pb, id)) < 0)
return error;
if (obj->uninteresting)
return 0;
obj->uninteresting = 1;
if ((error = git_tree_lookup(&tree, pb->repo, id)) < 0)
return error;
for (i = 0; i < git_tree_entrycount(tree); i++) {
const git_tree_entry *entry = git_tree_entry_byindex(tree, i);
const git_oid *entry_id = git_tree_entry_id(entry);
switch (git_tree_entry_type(entry)) {
case GIT_OBJECT_TREE:
if ((error = mark_tree_uninteresting(pb, entry_id)) < 0)
goto cleanup;
break;
case GIT_OBJECT_BLOB:
if ((error = mark_blob_uninteresting(pb, entry_id)) < 0)
goto cleanup;
break;
default:
/* it's a submodule or something unknown, we don't want it */
;
}
}
cleanup:
git_tree_free(tree);
return error;
}
/*
* Mark the edges of the graph uninteresting. Since we start from a
* git_revwalk, the commits are already uninteresting, but we need to
* mark the trees and blobs.
*/
static int mark_edges_uninteresting(git_packbuilder *pb, git_commit_list *commits)
{
int error;
git_commit_list *list;
git_commit *commit;
for (list = commits; list; list = list->next) {
if (!list->item->uninteresting)
continue;
if ((error = git_commit_lookup(&commit, pb->repo, &list->item->oid)) < 0)
return error;
error = mark_tree_uninteresting(pb, git_commit_tree_id(commit));
git_commit_free(commit);
if (error < 0)
return error;
}
return 0;
}
static int pack_objects_insert_tree(git_packbuilder *pb, git_tree *tree)
{
size_t i;
int error;
git_tree *subtree;
struct walk_object *obj;
const char *name;
if ((error = retrieve_object(&obj, pb, git_tree_id(tree))) < 0)
return error;
if (obj->seen || obj->uninteresting)
return 0;
obj->seen = 1;
if ((error = git_packbuilder_insert(pb, &obj->id, NULL)))
return error;
for (i = 0; i < git_tree_entrycount(tree); i++) {
const git_tree_entry *entry = git_tree_entry_byindex(tree, i);
const git_oid *entry_id = git_tree_entry_id(entry);
switch (git_tree_entry_type(entry)) {
case GIT_OBJECT_TREE:
if ((error = git_tree_lookup(&subtree, pb->repo, entry_id)) < 0)
return error;
error = pack_objects_insert_tree(pb, subtree);
git_tree_free(subtree);
if (error < 0)
return error;
break;
case GIT_OBJECT_BLOB:
if ((error = retrieve_object(&obj, pb, entry_id)) < 0)
return error;
if (obj->uninteresting)
continue;
name = git_tree_entry_name(entry);
if ((error = git_packbuilder_insert(pb, entry_id, name)) < 0)
return error;
break;
default:
/* it's a submodule or something unknown, we don't want it */
;
}
}
return error;
}
static int pack_objects_insert_commit(git_packbuilder *pb, struct walk_object *obj)
{
int error;
git_commit *commit = NULL;
git_tree *tree = NULL;
obj->seen = 1;
if ((error = git_packbuilder_insert(pb, &obj->id, NULL)) < 0)
return error;
if ((error = git_commit_lookup(&commit, pb->repo, &obj->id)) < 0)
return error;
if ((error = git_tree_lookup(&tree, pb->repo, git_commit_tree_id(commit))) < 0)
goto cleanup;
if ((error = pack_objects_insert_tree(pb, tree)) < 0)
goto cleanup;
cleanup:
git_commit_free(commit);
git_tree_free(tree);
return error;
}
int git_packbuilder_insert_walk(git_packbuilder *pb, git_revwalk *walk)
{
int error;
git_oid id;
struct walk_object *obj;
GIT_ASSERT_ARG(pb);
GIT_ASSERT_ARG(walk);
if ((error = mark_edges_uninteresting(pb, walk->user_input)) < 0)
return error;
/*
* TODO: git marks the parents of the edges
* uninteresting. This may provide a speed advantage, but does
* seem to assume the remote does not have a single-commit
* history on the other end.
*/
/* walk down each tree up to the blobs and insert them, stopping when uninteresting */
while ((error = git_revwalk_next(&id, walk)) == 0) {
if ((error = retrieve_object(&obj, pb, &id)) < 0)
return error;
if (obj->seen || obj->uninteresting)
continue;
if ((error = pack_objects_insert_commit(pb, obj)) < 0)
return error;
}
if (error == GIT_ITEROVER)
error = 0;
return error;
}
int git_packbuilder_set_callbacks(git_packbuilder *pb, git_packbuilder_progress progress_cb, void *progress_cb_payload)
{
if (!pb)
return -1;
pb->progress_cb = progress_cb;
pb->progress_cb_payload = progress_cb_payload;
return 0;
}
void git_packbuilder_free(git_packbuilder *pb)
{
if (pb == NULL)
return;
#ifdef GIT_THREADS
git_mutex_free(&pb->cache_mutex);
git_mutex_free(&pb->progress_mutex);
git_cond_free(&pb->progress_cond);
#endif
if (pb->odb)
git_odb_free(pb->odb);
if (pb->object_ix)
git_oidmap_free(pb->object_ix);
if (pb->object_list)
git__free(pb->object_list);
git_oidmap_free(pb->walk_objects);
git_pool_clear(&pb->object_pool);
git_hash_ctx_cleanup(&pb->ctx);
git_zstream_free(&pb->zstream);
git__free(pb);
}
|
0 |
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2
|
repos/gyro/.gyro/zig-libgit2-mattnite-github.com-0537beea/pkg/libgit2/src/trailer.c
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "array.h"
#include "common.h"
#include "git2/message.h"
#include <stddef.h>
#include <string.h>
#include <ctype.h>
#define COMMENT_LINE_CHAR '#'
#define TRAILER_SEPARATORS ":"
static const char *const git_generated_prefixes[] = {
"Signed-off-by: ",
"(cherry picked from commit ",
NULL
};
static int is_blank_line(const char *str)
{
const char *s = str;
while (*s && *s != '\n' && isspace(*s))
s++;
return !*s || *s == '\n';
}
static const char *next_line(const char *str)
{
const char *nl = strchr(str, '\n');
if (nl) {
return nl + 1;
} else {
/* return pointer to the NUL terminator: */
return str + strlen(str);
}
}
/*
* Return the position of the start of the last line. If len is 0, return 0.
*/
static bool last_line(size_t *out, const char *buf, size_t len)
{
size_t i;
*out = 0;
if (len == 0)
return false;
if (len == 1)
return true;
/*
* Skip the last character (in addition to the null terminator),
* because if the last character is a newline, it is considered as part
* of the last line anyway.
*/
i = len - 2;
for (; i > 0; i--) {
if (buf[i] == '\n') {
*out = i + 1;
return true;
}
}
return true;
}
/*
* If the given line is of the form
* "<token><optional whitespace><separator>..." or "<separator>...", sets out
* to the location of the separator and returns true. Otherwise, returns
* false. The optional whitespace is allowed there primarily to allow things
* like "Bug #43" where <token> is "Bug" and <separator> is "#".
*
* The separator-starts-line case (in which this function returns true and
* sets out to 0) is distinguished from the non-well-formed-line case (in
* which this function returns false) because some callers of this function
* need such a distinction.
*/
static bool find_separator(size_t *out, const char *line, const char *separators)
{
int whitespace_found = 0;
const char *c;
for (c = line; *c; c++) {
if (strchr(separators, *c)) {
*out = c - line;
return true;
}
if (!whitespace_found && (isalnum(*c) || *c == '-'))
continue;
if (c != line && (*c == ' ' || *c == '\t')) {
whitespace_found = 1;
continue;
}
break;
}
return false;
}
/*
* Inspect the given string and determine the true "end" of the log message, in
* order to find where to put a new Signed-off-by: line. Ignored are
* trailing comment lines and blank lines. To support "git commit -s
* --amend" on an existing commit, we also ignore "Conflicts:". To
* support "git commit -v", we truncate at cut lines.
*
* Returns the number of bytes from the tail to ignore, to be fed as
* the second parameter to append_signoff().
*/
static size_t ignore_non_trailer(const char *buf, size_t len)
{
size_t boc = 0, bol = 0;
int in_old_conflicts_block = 0;
size_t cutoff = len;
while (bol < cutoff) {
const char *next_line = memchr(buf + bol, '\n', len - bol);
if (!next_line)
next_line = buf + len;
else
next_line++;
if (buf[bol] == COMMENT_LINE_CHAR || buf[bol] == '\n') {
/* is this the first of the run of comments? */
if (!boc)
boc = bol;
/* otherwise, it is just continuing */
} else if (git__prefixcmp(buf + bol, "Conflicts:\n") == 0) {
in_old_conflicts_block = 1;
if (!boc)
boc = bol;
} else if (in_old_conflicts_block && buf[bol] == '\t') {
; /* a pathname in the conflicts block */
} else if (boc) {
/* the previous was not trailing comment */
boc = 0;
in_old_conflicts_block = 0;
}
bol = next_line - buf;
}
return boc ? len - boc : len - cutoff;
}
/*
* Return the position of the start of the patch or the length of str if there
* is no patch in the message.
*/
static size_t find_patch_start(const char *str)
{
const char *s;
for (s = str; *s; s = next_line(s)) {
if (git__prefixcmp(s, "---") == 0)
return s - str;
}
return s - str;
}
/*
* Return the position of the first trailer line or len if there are no
* trailers.
*/
static size_t find_trailer_start(const char *buf, size_t len)
{
const char *s;
size_t end_of_title, l;
int only_spaces = 1;
int recognized_prefix = 0, trailer_lines = 0, non_trailer_lines = 0;
/*
* Number of possible continuation lines encountered. This will be
* reset to 0 if we encounter a trailer (since those lines are to be
* considered continuations of that trailer), and added to
* non_trailer_lines if we encounter a non-trailer (since those lines
* are to be considered non-trailers).
*/
int possible_continuation_lines = 0;
/* The first paragraph is the title and cannot be trailers */
for (s = buf; s < buf + len; s = next_line(s)) {
if (s[0] == COMMENT_LINE_CHAR)
continue;
if (is_blank_line(s))
break;
}
end_of_title = s - buf;
/*
* Get the start of the trailers by looking starting from the end for a
* blank line before a set of non-blank lines that (i) are all
* trailers, or (ii) contains at least one Git-generated trailer and
* consists of at least 25% trailers.
*/
l = len;
while (last_line(&l, buf, l) && l >= end_of_title) {
const char *bol = buf + l;
const char *const *p;
size_t separator_pos = 0;
if (bol[0] == COMMENT_LINE_CHAR) {
non_trailer_lines += possible_continuation_lines;
possible_continuation_lines = 0;
continue;
}
if (is_blank_line(bol)) {
if (only_spaces)
continue;
non_trailer_lines += possible_continuation_lines;
if (recognized_prefix &&
trailer_lines * 3 >= non_trailer_lines)
return next_line(bol) - buf;
else if (trailer_lines && !non_trailer_lines)
return next_line(bol) - buf;
return len;
}
only_spaces = 0;
for (p = git_generated_prefixes; *p; p++) {
if (git__prefixcmp(bol, *p) == 0) {
trailer_lines++;
possible_continuation_lines = 0;
recognized_prefix = 1;
goto continue_outer_loop;
}
}
find_separator(&separator_pos, bol, TRAILER_SEPARATORS);
if (separator_pos >= 1 && !isspace(bol[0])) {
trailer_lines++;
possible_continuation_lines = 0;
if (recognized_prefix)
continue;
} else if (isspace(bol[0]))
possible_continuation_lines++;
else {
non_trailer_lines++;
non_trailer_lines += possible_continuation_lines;
possible_continuation_lines = 0;
}
continue_outer_loop:
;
}
return len;
}
/* Return the position of the end of the trailers. */
static size_t find_trailer_end(const char *buf, size_t len)
{
return len - ignore_non_trailer(buf, len);
}
static char *extract_trailer_block(const char *message, size_t *len)
{
size_t patch_start = find_patch_start(message);
size_t trailer_end = find_trailer_end(message, patch_start);
size_t trailer_start = find_trailer_start(message, trailer_end);
size_t trailer_len = trailer_end - trailer_start;
char *buffer = git__malloc(trailer_len + 1);
if (buffer == NULL)
return NULL;
memcpy(buffer, message + trailer_start, trailer_len);
buffer[trailer_len] = 0;
*len = trailer_len;
return buffer;
}
enum trailer_state {
S_START = 0,
S_KEY = 1,
S_KEY_WS = 2,
S_SEP_WS = 3,
S_VALUE = 4,
S_VALUE_NL = 5,
S_VALUE_END = 6,
S_IGNORE = 7,
};
#define NEXT(st) { state = (st); ptr++; continue; }
#define GOTO(st) { state = (st); continue; }
typedef git_array_t(git_message_trailer) git_array_trailer_t;
int git_message_trailers(git_message_trailer_array *trailer_arr, const char *message)
{
enum trailer_state state = S_START;
int rc = 0;
char *ptr;
char *key = NULL;
char *value = NULL;
git_array_trailer_t arr = GIT_ARRAY_INIT;
size_t trailer_len;
char *trailer = extract_trailer_block(message, &trailer_len);
if (trailer == NULL)
return -1;
for (ptr = trailer;;) {
switch (state) {
case S_START: {
if (*ptr == 0) {
goto ret;
}
key = ptr;
GOTO(S_KEY);
}
case S_KEY: {
if (*ptr == 0) {
goto ret;
}
if (isalnum(*ptr) || *ptr == '-') {
/* legal key character */
NEXT(S_KEY);
}
if (*ptr == ' ' || *ptr == '\t') {
/* optional whitespace before separator */
*ptr = 0;
NEXT(S_KEY_WS);
}
if (strchr(TRAILER_SEPARATORS, *ptr)) {
*ptr = 0;
NEXT(S_SEP_WS);
}
/* illegal character */
GOTO(S_IGNORE);
}
case S_KEY_WS: {
if (*ptr == 0) {
goto ret;
}
if (*ptr == ' ' || *ptr == '\t') {
NEXT(S_KEY_WS);
}
if (strchr(TRAILER_SEPARATORS, *ptr)) {
NEXT(S_SEP_WS);
}
/* illegal character */
GOTO(S_IGNORE);
}
case S_SEP_WS: {
if (*ptr == 0) {
goto ret;
}
if (*ptr == ' ' || *ptr == '\t') {
NEXT(S_SEP_WS);
}
value = ptr;
NEXT(S_VALUE);
}
case S_VALUE: {
if (*ptr == 0) {
GOTO(S_VALUE_END);
}
if (*ptr == '\n') {
NEXT(S_VALUE_NL);
}
NEXT(S_VALUE);
}
case S_VALUE_NL: {
if (*ptr == ' ') {
/* continuation; */
NEXT(S_VALUE);
}
ptr[-1] = 0;
GOTO(S_VALUE_END);
}
case S_VALUE_END: {
git_message_trailer *t = git_array_alloc(arr);
t->key = key;
t->value = value;
key = NULL;
value = NULL;
GOTO(S_START);
}
case S_IGNORE: {
if (*ptr == 0) {
goto ret;
}
if (*ptr == '\n') {
NEXT(S_START);
}
NEXT(S_IGNORE);
}
}
}
ret:
trailer_arr->_trailer_block = trailer;
trailer_arr->trailers = arr.ptr;
trailer_arr->count = arr.size;
return rc;
}
void git_message_trailer_array_free(git_message_trailer_array *arr)
{
git__free(arr->_trailer_block);
git__free(arr->trailers);
}
|
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