text: /*
   * Copyright (c) 2000, 2005, 2007, 2009, 2010 Apple Inc. All rights reserved.
   *
   * @APPLE_LICENSE_HEADER_START@
   *
   * This file contains Original Code and/or Modifications of Original Code
   * as defined in and that are subject to the Apple Public Source License
   * Version 2.0 (the 'License'). You may not use this file except in
   * compliance with the License. Please obtain a copy of the License at
   * http://www.opensource.apple.com/apsl/ and read it before using this
   * file.
   *
   * The Original Code and all software distributed under the License are
   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
   * Please see the License for the specific language governing rights and
   * limitations under the License.
   *
   * @APPLE_LICENSE_HEADER_END@
   */
  /*-
   * Copyright (c) 1990, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * Chris Torek.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
   *
   *	@(#)stdio.h	8.5 (Berkeley) 4/29/95
   */
  
  #ifndef	_STDIO_H_
  #define	_STDIO_H_
  
  #include <_stdio.h>
  
  __BEGIN_DECLS
  extern FILE *__stdinp;
  extern FILE *__stdoutp;
  extern FILE *__stderrp;
  __END_DECLS
  
  #define	__SLBF	0x0001		/* line buffered */
  #define	__SNBF	0x0002		/* unbuffered */
  #define	__SRD	0x0004		/* OK to read */
  #define	__SWR	0x0008		/* OK to write */
  	/* RD and WR are never simultaneously asserted */
  #define	__SRW	0x0010		/* open for reading & writing */
  #define	__SEOF	0x0020		/* found EOF */
  #define	__SERR	0x0040		/* found error */
  #define	__SMBF	0x0080		/* _buf is from malloc */
  #define	__SAPP	0x0100		/* fdopen()ed in append mode */
  #define	__SSTR	0x0200		/* this is an sprintf/snprintf string */
  #define	__SOPT	0x0400		/* do fseek() optimisation */
  #define	__SNPT	0x0800		/* do not do fseek() optimisation */
  #define	__SOFF	0x1000		/* set iff _offset is in fact correct */
  #define	__SMOD	0x2000		/* true => fgetln modified _p text */
  #define __SALC  0x4000		/* allocate string space dynamically */
  #define __SIGN  0x8000		/* ignore this file in _fwalk */
  
  /*
   * The following three definitions are for ANSI C, which took them
   * from System V, which brilliantly took internal interface macros and
   * made them official arguments to setvbuf(), without renaming them.
   * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
   *
   * Although numbered as their counterparts above, the implementation
   * does not rely on this.
   */
  #define	_IOFBF	0		/* setvbuf should set fully buffered */
  #define	_IOLBF	1		/* setvbuf should set line buffered */
  #define	_IONBF	2		/* setvbuf should set unbuffered */
  
  #define	BUFSIZ	1024		/* size of buffer used by setbuf */
  #define	EOF	(-1)
  
  				/* must be == _POSIX_STREAM_MAX <limits.h> */
  #define	FOPEN_MAX	20	/* must be <= OPEN_MAX <sys/syslimits.h> */
  #define	FILENAME_MAX	1024	/* must be <= PATH_MAX <sys/syslimits.h> */
  
  /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
  #ifndef _ANSI_SOURCE
  #define	P_tmpdir	"/var/tmp/"
  #endif
  #define	L_tmpnam	1024	/* XXX must be == PATH_MAX */
  #define	TMP_MAX		308915776
  
  #ifndef SEEK_SET
  #define	SEEK_SET	0	/* set file offset to offset */
  #endif
  #ifndef SEEK_CUR
  #define	SEEK_CUR	1	/* set file offset to current plus offset */
  #endif
  #ifndef SEEK_END
  #define	SEEK_END	2	/* set file offset to EOF plus offset */
  #endif
  
  #define	stdin	__stdinp
  #define	stdout	__stdoutp
  #define	stderr	__stderrp
  
  #ifdef _DARWIN_UNLIMITED_STREAMS
  #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_3_2
  #error "_DARWIN_UNLIMITED_STREAMS specified, but -miphoneos-version-min version does not support it."
  #elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_6
  #error "_DARWIN_UNLIMITED_STREAMS specified, but -mmacosx-version-min version does not support it."
  #endif
  #endif
  
  /* ANSI-C */
  
  __BEGIN_DECLS
  void	 clearerr(FILE *);
  int	 fclose(FILE *);
  int	 feof(FILE *);
  int	 ferror(FILE *);
  int	 fflush(FILE *);
  int	 fgetc(FILE *);
  int	 fgetpos(FILE * __restrict, fpos_t *);
  char	*fgets(char * __restrict, int, FILE *);
  #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
  FILE	*fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fopen));
  #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
  FILE	*fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(fopen));
  #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
  int	 fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
  int	 fputc(int, FILE *);
  int	 fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
  size_t	 fread(void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream);
  FILE	*freopen(const char * __restrict, const char * __restrict,
                   FILE * __restrict) __DARWIN_ALIAS(freopen);
  int	 fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
  int	 fseek(FILE *, long, int);
  int	 fsetpos(FILE *, const fpos_t *);
  long	 ftell(FILE *);
  size_t	 fwrite(const void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
  int	 getc(FILE *);
  int	 getchar(void);
  char	*gets(char *);
  void	 perror(const char *);
  int	 printf(const char * __restrict, ...) __printflike(1, 2);
  int	 putc(int, FILE *);
  int	 putchar(int);
  int	 puts(const char *);
  int	 remove(const char *);
  int	 rename (const char *__old, const char *__new);
  void	 rewind(FILE *);
  int	 scanf(const char * __restrict, ...) __scanflike(1, 2);
  void	 setbuf(FILE * __restrict, char * __restrict);
  int	 setvbuf(FILE * __restrict, char * __restrict, int, size_t);
  int	 sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("Use snprintf instead.");
  int	 sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
  FILE	*tmpfile(void);
  
  __swift_unavailable("Use mkstemp(3) instead.")
  #if !defined(_POSIX_C_SOURCE)
  __deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of tmpnam(3), it is highly recommended that you use mkstemp(3) instead.")
  #endif
  char	*tmpnam(char *);
  int	 ungetc(int, FILE *);
  int	 vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
  int	 vprintf(const char * __restrict, va_list) __printflike(1, 0);
  int	 vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailable("Use vsnprintf instead.");
  __END_DECLS
  
  
  
  /* Additional functionality provided by:
   * POSIX.1-1988
   */
  
  #if __DARWIN_C_LEVEL >= 198808L
  #define	L_ctermid	1024	/* size for ctermid(); PATH_MAX */
  
  __BEGIN_DECLS
  #ifndef __CTERMID_DEFINED
  /* Multiply defined in stdio.h and unistd.h by SUS */
  #define __CTERMID_DEFINED 1
  char	*ctermid(char *);
  #endif
  
  #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
  FILE	*fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(fdopen));
  #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
  FILE	*fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(fdopen));
  #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
  int	 fileno(FILE *);
  __END_DECLS
  #endif /* __DARWIN_C_LEVEL >= 198808L */
  
  
  /* Additional functionality provided by:
   * POSIX.2-1992 C Language Binding Option
   */
  #if TARGET_OS_EMBEDDED
  #define __swift_unavailable_on(osx_msg, ios_msg) __swift_unavailable(ios_msg)
  #else
  #define __swift_unavailable_on(osx_msg, ios_msg) __swift_unavailable(osx_msg)
  #endif
  
  #if __DARWIN_C_LEVEL >= 199209L
  __BEGIN_DECLS
  int	 pclose(FILE *) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
  #if defined(_DARWIN_UNLIMITED_STREAMS) || defined(_DARWIN_C_SOURCE)
  FILE	*popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_3_2, __DARWIN_EXTSN(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
  #else /* !_DARWIN_UNLIMITED_STREAMS && !_DARWIN_C_SOURCE */
  FILE	*popen(const char *, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(popen)) __swift_unavailable_on("Use posix_spawn APIs or NSTask instead.", "Process spawning is unavailable.");
  #endif /* (DARWIN_UNLIMITED_STREAMS || _DARWIN_C_SOURCE) */
  __END_DECLS
  #endif /* __DARWIN_C_LEVEL >= 199209L */
  
  #undef __swift_unavailable_on
  
  /* Additional functionality provided by:
   * POSIX.1c-1995,
   * POSIX.1i-1995,
   * and the omnibus ISO/IEC 9945-1: 1996
   */
  
  #if __DARWIN_C_LEVEL >= 199506L
  
  /* Functions internal to the implementation. */
  __BEGIN_DECLS
  int	__srget(FILE *);
  int	__svfscanf(FILE *, const char *, va_list) __scanflike(2, 0);
  int	__swbuf(int, FILE *);
  __END_DECLS
  
  /*
   * The __sfoo macros are here so that we can
   * define function versions in the C library.
   */
  #define	__sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
  #if defined(__GNUC__) && defined(__STDC__)
  __header_always_inline int __sputc(int _c, FILE *_p) {
  	if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
  		return (*_p->_p++ = _c);
  	else
  		return (__swbuf(_c, _p));
  }
  #else
  /*
   * This has been tuned to generate reasonable code on the vax using pcc.
   */
  #define	__sputc(c, p) \
  	(--(p)->_w < 0 ? \
  		(p)->_w >= (p)->_lbfsize ? \
  			(*(p)->_p = (c)), *(p)->_p != '\n' ? \
  				(int)*(p)->_p++ : \
  				__swbuf('\n', p) : \
  			__swbuf((int)(c), p) : \
  		(*(p)->_p = (c), (int)*(p)->_p++))
  #endif
  
  #define	__sfeof(p)	(((p)->_flags & __SEOF) != 0)
  #define	__sferror(p)	(((p)->_flags & __SERR) != 0)
  #define	__sclearerr(p)	((void)((p)->_flags &= ~(__SERR|__SEOF)))
  #define	__sfileno(p)	((p)->_file)
  
  __BEGIN_DECLS
  void	 flockfile(FILE *);
  int	 ftrylockfile(FILE *);
  void	 funlockfile(FILE *);
  int	 getc_unlocked(FILE *);
  int	 getchar_unlocked(void);
  int	 putc_unlocked(int, FILE *);
  int	 putchar_unlocked(int);
  
  /* Removed in Issue 6 */
  #if !defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 200112L
  int	 getw(FILE *);
  int	 putw(int, FILE *);
  #endif
  
  __swift_unavailable("Use mkstemp(3) instead.")
  #if !defined(_POSIX_C_SOURCE)
  __deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of tempnam(3), it is highly recommended that you use mkstemp(3) instead.")
  #endif
  char	*tempnam(const char *__dir, const char *__prefix) __DARWIN_ALIAS(tempnam);
  __END_DECLS
  
  #ifndef lint
  #define	getc_unlocked(fp)	__sgetc(fp)
  #define putc_unlocked(x, fp)	__sputc(x, fp)
  #endif /* lint */
  
  #define	getchar_unlocked()	getc_unlocked(stdin)
  #define	putchar_unlocked(x)	putc_unlocked(x, stdout)
  #endif /* __DARWIN_C_LEVEL >= 199506L */
  
  
  
  /* Additional functionality provided by:
   * POSIX.1-2001
   * ISO C99
   */
  
  #if __DARWIN_C_LEVEL >= 200112L
  #include <sys/_types/_off_t.h>
  
  __BEGIN_DECLS
  int	 fseeko(FILE * __stream, off_t __offset, int __whence);
  off_t	 ftello(FILE * __stream);
  __END_DECLS
  #endif /* __DARWIN_C_LEVEL >= 200112L */
  
  #if __DARWIN_C_LEVEL >= 200112L || defined(_C99_SOURCE) || defined(__cplusplus)
  __BEGIN_DECLS
  int	 snprintf(char * __restrict __str, size_t __size, const char * __restrict __format, ...) __printflike(3, 4);
  int	 vfscanf(FILE * __restrict __stream, const char * __restrict __format, va_list) __scanflike(2, 0);
  int	 vscanf(const char * __restrict __format, va_list) __scanflike(1, 0);
  int	 vsnprintf(char * __restrict __str, size_t __size, const char * __restrict __format, va_list) __printflike(3, 0);
  int	 vsscanf(const char * __restrict __str, const char * __restrict __format, va_list) __scanflike(2, 0);
  __END_DECLS
  #endif /* __DARWIN_C_LEVEL >= 200112L || defined(_C99_SOURCE) || defined(__cplusplus) */
  
  
  
  /* Additional functionality provided by:
   * POSIX.1-2008
   */
  
  #if __DARWIN_C_LEVEL >= 200809L
  #include <sys/_types/_ssize_t.h>
  
  __BEGIN_DECLS
  int	dprintf(int, const char * __restrict, ...) __printflike(2, 3) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
  int	vdprintf(int, const char * __restrict, va_list) __printflike(2, 0) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
  ssize_t getdelim(char ** __restrict __linep, size_t * __restrict __linecapp, int __delimiter, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
  ssize_t getline(char ** __restrict __linep, size_t * __restrict __linecapp, FILE * __restrict __stream) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3);
  FILE *fmemopen(void * __restrict __buf, size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
  FILE *open_memstream(char **__bufp, size_t *__sizep) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
  __END_DECLS
  #endif /* __DARWIN_C_LEVEL >= 200809L */
  
  
  
  /* Darwin extensions */
  
  #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
  __BEGIN_DECLS
  extern __const int sys_nerr;		/* perror(3) external variables */
  extern __const char *__const sys_errlist[];
  
  int	 asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
  char	*ctermid_r(char *);
  char	*fgetln(FILE *, size_t *);
  __const char *fmtcheck(const char *, const char *);
  int	 fpurge(FILE *);
  void	 setbuffer(FILE *, char *, int);
  int	 setlinebuf(FILE *);
  int	 vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
  FILE	*zopen(const char *, const char *, int);
  
  
  /*
   * Stdio function-access interface.
   */
  FILE	*funopen(const void *,
                   int (* _Nullable)(void *, char *, int),
                   int (* _Nullable)(void *, const char *, int),
                   fpos_t (* _Nullable)(void *, fpos_t, int),
                   int (* _Nullable)(void *));
  __END_DECLS
  #define	fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
  #define	fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
  
  #define	feof_unlocked(p)	__sfeof(p)
  #define	ferror_unlocked(p)	__sferror(p)
  #define	clearerr_unlocked(p)	__sclearerr(p)
  #define	fileno_unlocked(p)	__sfileno(p)
  
  #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
  
  
  #ifdef _USE_EXTENDED_LOCALES_
  #include <xlocale/_stdio.h>
  #endif /* _USE_EXTENDED_LOCALES_ */
  
  #if defined (__GNUC__) && _FORTIFY_SOURCE > 0 && !defined (__cplusplus)
  /* Security checking functions.  */
  #include <secure/_stdio.h>
  #endif
  
  #endif /* _STDIO_H_ */
  