text: /*************************************************************************
   *
   * $Id$
   *
   * Copyright (C) 2000 Bjorn Reese and Daniel Stenberg.
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
   * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
   * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND
   * CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.
   *
   ************************************************************************
   *
   * Private functions, types, etc. used for callback functions.
   *
   * The ref pointer is an opaque type and should remain as such.
   * Private data must only be accessible through the getter and
   * setter functions.
   *
   ************************************************************************/
  
  #ifndef TRIO_TRIOP_H
  #define TRIO_TRIOP_H
  
  #include "triodef.h"
  
  #include <stdlib.h>
  #if defined(TRIO_COMPILER_ANCIENT)
  # include <varargs.h>
  #else
  # include <stdarg.h>
  #endif
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /*************************************************************************
   * Supported standards
   */
  
  /*
   * TRIO_C99 (=0 or =1)
   *
   * Define this to 0 to disable C99 format specifier extensions, or
   * define to 1 to enable them.  The format specifiers that are
   * disabled by this switch are labelled with [C99] in the format
   * specifier documentation.
   */
  #if !defined(TRIO_C99)
  # define TRIO_C99 1
  #endif
  
  /*
   * TRIO_BSD (=0 or =1)
   *
   * Define this to 0 to disable BSD format specifier extensions, or
   * define to 1 to enable them.  The format specifiers that are
   * disabled by this switch are labelled with [BSD] in the format
   * specifier documentation.
   */
  #if !defined(TRIO_BSD)
  # define TRIO_BSD 1
  #endif
  
  /*
   * TRIO_GNU (=0 or =1)
   *
   * Define this to 0 to disable GNU format specifier extensions, or
   * define to 1 to enable them.  The format specifiers that are
   * disabled by this switch are labelled with [GNU] in the format
   * specifier documentation.
   */
  #if !defined(TRIO_GNU)
  # define TRIO_GNU 1
  #endif
  
  /*
   * TRIO_MISC (=0 or =1)
   *
   * Define this to 0 to disable miscellaneous format specifier
   * extensions, or define to 1 to enable them.  The format specifiers
   * that are disabled by this switch are labelled with [MISC] in the
   * format specifier documentation.
   */
  #if !defined(TRIO_MISC)
  # define TRIO_MISC 1
  #endif
  
  /*
   * TRIO_UNIX98 (=0 or =1)
   *
   * Define this to 0 to disable UNIX98 format specifier extensions,
   * or define to 1 to enable them.  The format specifiers that are
   * disabled by this switch are labelled with [UNIX98] in the format
   * specifier documentation.
   */
  #if !defined(TRIO_UNIX98)
  # define TRIO_UNIX98 1
  #endif
    
  /*
   * TRIO_MICROSOFT (=0 or =1)
   *
   * Define this to 0 to disable Microsoft Visual C format specifier
   * extensions, or define to 1 to enable them.  The format specifiers
   * that are disabled by this switch are labelled with [MSVC] in the
   * format specifier documentation.
   */
  #if !defined(TRIO_MICROSOFT)
  # define TRIO_MICROSOFT 1
  #endif
  
  /*
   * TRIO_EXTENSION (=0 or =1)
   *
   * Define this to 0 to disable Trio-specific extensions, or define
   * to 1 to enable them.  This has two effects: it controls whether
   * or not the Trio user-defined formating mechanism
   * (trio_register() etc) is supported, and it enables or disables
   * Trio's own format specifier extensions.  The format specifiers
   * that are disabled by this switch are labelled with [TRIO] in
   * the format specifier documentation.
   */
  #if !defined(TRIO_EXTENSION)
  # define TRIO_EXTENSION 1
  #endif
  
  /*
   * TRIO_DEPRECATED (=0 or =1)
   *
   * Define this to 0 to disable deprecated functionality, or define
   * to 1 to enable them.
   */
  #if !defined(TRIO_DEPRECATED)
  # define TRIO_DEPRECATED 1
  #endif
  
  /*************************************************************************
   * Features
   */
  
  #if defined(TRIO_SNPRINTF_ONLY)
  # define TRIO_FEATURE_SCANF 0
  # define TRIO_FEATURE_FILE 0
  # define TRIO_FEATURE_STDIO 0
  # define TRIO_FEATURE_FD 0
  # define TRIO_FEATURE_DYNAMICSTRING 0
  # define TRIO_FEATURE_CLOSURE 0
  # define TRIO_FEATURE_ARGFUNC 0
  # define TRIO_FEATURE_STRERR 0
  # define TRIO_FEATURE_LOCALE 0
  # define TRIO_EMBED_NAN 1
  # define TRIO_EMBED_STRING 1
  #endif
    
  /*
   * TRIO_FEATURE_SCANF (=0 or =1)
   *
   * Define this to 0 to disable all the scanf() variants, or define to 1
   * to enable them.
   */
  #if !defined(TRIO_FEATURE_SCANF)
  # define TRIO_FEATURE_SCANF 1
  #endif
    
  /*
   * TRIO_FEATURE_FILE (=0 or =1)
   *
   * Define this to 0 to disable compilation of the trio_fprintf() and
   * trio_fscanf() family of functions, or define to 1 to enable them.
   *
   * This may be useful on an embedded platform with no filesystem.
   * Note that trio_printf() uses fwrite to write to stdout, so if you
   * do not have an implementation of fwrite() at all then you must also
   * define TRIO_FEATURE_STDIO to 0.
   */
  #if !defined(TRIO_FEATURE_FILE)
  # define TRIO_FEATURE_FILE 1
  #endif
  
  /*
   * TRIO_FEATURE_STDIO (=0 or =1)
   *
   * Define this to 0 to disable compilation of the trio_printf() and
   * trio_scanf() family of functions, or define to 1 to enable them.
   *
   * This may be useful on an embedded platform with no standard I/O.
   */
  #if !defined(TRIO_FEATURE_STDIO)
  # define TRIO_FEATURE_STDIO 1
  #endif
  
  /*
   * TRIO_FEATURE_FD (=0 or =1)
   *
   * Define this to 0 to disable compilation of the trio_dprintf() and
   * trio_dscanf() family of functions, or define to 1 to enable them.
   *
   * This may be useful on an embedded platform with no filesystem, or on
   * a platform that supports file I/O using FILE* but not using raw file
   * descriptors.
   */
  #if !defined(TRIO_FEATURE_FD)
  # define TRIO_FEATURE_FD 1
  #endif
  
  /*
   * TRIO_FEATURE_DYNAMICSTRING (=0 or =1)
   *
   * Define this to 0 to disable compilation of the trio_aprintf() 
   * family of functions, or define to 1 to enable them.
   *
   * If you define both this and TRIO_MINIMAL to 0, then Trio will never
   * call malloc or free.
   */
  #if !defined(TRIO_FEATURE_DYNAMICSTRING)
  # define TRIO_FEATURE_DYNAMICSTRING 1
  #endif
  
  /*
   * TRIO_FEATURE_CLOSURE (=0 or =1)
   *
   * Define this to 0 to disable compilation of the trio_cprintf() and
   * trio_cscanf() family of functions, or define to 1 to enable them.
   *
   * These functions are rarely needed. This saves a (small) amount of code.
   */
  #if !defined(TRIO_FEATURE_CLOSURE)
  # define TRIO_FEATURE_CLOSURE 1
  #endif
  
  /*
   * TRIO_FEATURE_ARGFUNC (=0 or =1)
   *
   * Define this to 0 to disable compilation of trio_cprintff() and
   * trio_cscanff() functions and related code (might have a tiny
   * performance gain), or define to 1 to enable them.
   *
   * This functionality is needed only if you have to fetch the arguments using
   * a pull model instead of passing them all at once (for example if you plan
   * to plug the library into a script interpreter or validate the types).
   *
   * Only the closure family of functions are available with this interface,
   * because if you need this, you usually provide custom input/output
   * handling too (and so this forces TRIO_FEATURE_CLOSURE to enabled).
   */
  #if !defined(TRIO_FEATURE_ARGFUNC)
  # define TRIO_FEATURE_ARGFUNC 1
  #endif
  #if TRIO_FEATURE_ARGFUNC
  # undef TRIO_FEATURE_CLOSURE
  # define TRIO_FEATURE_CLOSURE 1
  #endif
  
  /*
   * TRIO_FEATURE_ERRORCODE (=0 or =1)
   *
   * Define this to 0 to return -1 from the print and scan function on
   * error, or define to 1 to return a negative number with debugging
   * information as part of the return code.
   *
   * If enabled, the return code will be a negative number, which encodes
   * an error code and an error location. These can be decoded with the
   * TRIO_ERROR_CODE and TRIO_ERROR_POSITION macros.
   */
  #if defined(TRIO_ERRORS)
  # define TRIO_FEATURE_ERRORCODE TRIO_ERRORS
  #endif
  #if !defined(TRIO_FEATURE_ERRORCODE)
  # define TRIO_FEATURE_ERRORCODE 1
  #endif
  
  /*
   * TRIO_FEATURE_STRERR (=0 or =1)
   *
   * Define this to 0 if you do not use trio_strerror(), or define to 1 if
   * you do use it.
   *
   * This saves a (small) amount of code.
   */
  #if !defined(TRIO_FEATURE_STRERR)
  # define TRIO_FEATURE_STRERR 1
  #endif
  
  /*
   * TRIO_FEATURE_FLOAT (=0 or =1)
   *
   * Define this to 0 to disable all floating-point support, or define
   * to 1 to enable it.
   *
   * This is useful in restricted embedded platforms that do not support
   * floating-point.  Obviously you cannot use floating-point format
   * specifiers if you define this.
   *
   * Do not compile trionan.c if you disable this.
   */
  #if !defined(TRIO_FEATURE_FLOAT)
  # define TRIO_FEATURE_FLOAT 1
  #endif
  
  /*
   * TRIO_FEATURE_LOCALE (=0 or =1)
   *
   * Define this to 0 to disable customized locale support, or define
   * to 1 to enable it.
   *
   * This saves a (small) amount of code.
   */
  #if !defined(TRIO_FEATURE_LOCALE)
  # define TRIO_FEATURE_LOCALE 1
  #endif
  
  /*
   * TRIO_MINIMAL
   *
   * Define this to disable building the public trionan.h and triostr.h.
   * If you define this, then you must not compile trionan.c and triostr.c
   * separately.
   */
  #if defined(TRIO_MINIMAL)
  # if !defined(TRIO_EMBED_NAN)
  #  define TRIO_EMBED_NAN
  # endif
  # if !defined(TRIO_EMBED_STRING)
  #  define TRIO_EMBED_STRING
  # endif
  #endif
    
  /* Does not work yet. Do not enable */
  #ifndef TRIO_FEATURE_WIDECHAR
  # define TRIO_FEATURE_WIDECHAR 0
  #endif
  
  /*************************************************************************
   * Mapping standards to internal features
   */
  
  #if !defined(TRIO_FEATURE_HEXFLOAT)
  # define TRIO_FEATURE_HEXFLOAT (TRIO_C99 && TRIO_FEATURE_FLOAT)
  #endif
  
  #if !defined(TRIO_FEATURE_LONGDOUBLE)
  # define TRIO_FEATURE_LONGDOUBLE TRIO_FEATURE_FLOAT
  #endif
  
  #if !defined(TRIO_FEATURE_ERRNO)
  # define TRIO_FEATURE_ERRNO TRIO_GNU
  #endif
  
  #if !defined(TRIO_FEATURE_QUAD)
  # define TRIO_FEATURE_QUAD (TRIO_BSD || TRIO_GNU)
  #endif
  
  #if !defined(TRIO_FEATURE_SIZE_T)
  # define TRIO_FEATURE_SIZE_T TRIO_C99
  #endif
  
  #if !defined(TRIO_FEATURE_SIZE_T_UPPER)
  # define TRIO_FEATURE_SIZE_T_UPPER TRIO_GNU
  #endif
    
  #if !defined(TRIO_FEATURE_PTRDIFF_T)
  # define TRIO_FEATURE_PTRDIFF_T TRIO_C99
  #endif
  
  #if !defined(TRIO_FEATURE_INTMAX_T)
  # define TRIO_FEATURE_INTMAX_T TRIO_C99
  #endif
  
  #if !defined(TRIO_FEATURE_FIXED_SIZE)
  # define TRIO_FEATURE_FIXED_SIZE TRIO_MICROSOFT
  #endif
  
  #if !defined(TRIO_FEATURE_POSITIONAL)
  # define TRIO_FEATURE_POSITIONAL TRIO_UNIX98
  #endif
  
  #if !defined(TRIO_FEATURE_USER_DEFINED)
  # define TRIO_FEATURE_USER_DEFINED TRIO_EXTENSION
  #endif
  
  #if !defined(TRIO_FEATURE_BINARY)
  # define TRIO_FEATURE_BINARY TRIO_EXTENSION
  #endif
  
  #if !defined(TRIO_FEATURE_QUOTE)
  # define TRIO_FEATURE_QUOTE TRIO_EXTENSION
  #endif
    
  #if !defined(TRIO_FEATURE_STICKY)
  # define TRIO_FEATURE_STICKY TRIO_EXTENSION
  #endif
    
  #if !defined(TRIO_FEATURE_VARSIZE)
  # define TRIO_FEATURE_VARSIZE TRIO_EXTENSION
  #endif
  
  #if !defined(TRIO_FEATURE_ROUNDING)
  # define TRIO_FEATURE_ROUNDING TRIO_EXTENSION
  #endif
    
  /*************************************************************************
   * Memory handling
   */
  #ifndef TRIO_MALLOC
  # define TRIO_MALLOC(n) malloc(n)
  #endif
  #ifndef TRIO_REALLOC
  # define TRIO_REALLOC(x,n) realloc((x),(n))
  #endif
  #ifndef TRIO_FREE
  # define TRIO_FREE(x) free(x)
  #endif
  
  
  /*************************************************************************
   * User-defined specifiers
   */
  
  typedef int (*trio_callback_t) TRIO_PROTO((trio_pointer_t));
  
  trio_pointer_t trio_register TRIO_PROTO((trio_callback_t callback, const char *name));
  void trio_unregister TRIO_PROTO((trio_pointer_t handle));
  
  TRIO_CONST char *trio_get_format TRIO_PROTO((trio_pointer_t ref));
  TRIO_CONST trio_pointer_t trio_get_argument TRIO_PROTO((trio_pointer_t ref));
  
  /* Modifiers */
  int  trio_get_width TRIO_PROTO((trio_pointer_t ref));
  void trio_set_width TRIO_PROTO((trio_pointer_t ref, int width));
  int  trio_get_precision TRIO_PROTO((trio_pointer_t ref));
  void trio_set_precision TRIO_PROTO((trio_pointer_t ref, int precision));
  int  trio_get_base TRIO_PROTO((trio_pointer_t ref));
  void trio_set_base TRIO_PROTO((trio_pointer_t ref, int base));
  int  trio_get_padding TRIO_PROTO((trio_pointer_t ref));
  void trio_set_padding TRIO_PROTO((trio_pointer_t ref, int is_padding));
  int  trio_get_short TRIO_PROTO((trio_pointer_t ref)); /* h */
  void trio_set_shortshort TRIO_PROTO((trio_pointer_t ref, int is_shortshort));
  int  trio_get_shortshort TRIO_PROTO((trio_pointer_t ref)); /* hh */
  void trio_set_short TRIO_PROTO((trio_pointer_t ref, int is_short));
  int  trio_get_long TRIO_PROTO((trio_pointer_t ref)); /* l */
  void trio_set_long TRIO_PROTO((trio_pointer_t ref, int is_long));
  int  trio_get_longlong TRIO_PROTO((trio_pointer_t ref)); /* ll */
  void trio_set_longlong TRIO_PROTO((trio_pointer_t ref, int is_longlong));
  int  trio_get_longdouble TRIO_PROTO((trio_pointer_t ref)); /* L */
  void trio_set_longdouble TRIO_PROTO((trio_pointer_t ref, int is_longdouble));
  int  trio_get_alternative TRIO_PROTO((trio_pointer_t ref)); /* # */
  void trio_set_alternative TRIO_PROTO((trio_pointer_t ref, int is_alternative));
  int  trio_get_alignment TRIO_PROTO((trio_pointer_t ref)); /* - */
  void trio_set_alignment TRIO_PROTO((trio_pointer_t ref, int is_leftaligned));
  int  trio_get_spacing TRIO_PROTO((trio_pointer_t ref)); /* (space) */
  void trio_set_spacing TRIO_PROTO((trio_pointer_t ref, int is_space));
  int  trio_get_sign TRIO_PROTO((trio_pointer_t ref)); /* + */
  void trio_set_sign TRIO_PROTO((trio_pointer_t ref, int is_showsign));
  #if TRIO_FEATURE_QUOTE
  int  trio_get_quote TRIO_PROTO((trio_pointer_t ref)); /* ' */
  void trio_set_quote TRIO_PROTO((trio_pointer_t ref, int is_quote));
  #endif
  int  trio_get_upper TRIO_PROTO((trio_pointer_t ref));
  void trio_set_upper TRIO_PROTO((trio_pointer_t ref, int is_upper));
  #if TRIO_FEATURE_INTMAX_T
  int  trio_get_largest TRIO_PROTO((trio_pointer_t ref)); /* j */
  void trio_set_largest TRIO_PROTO((trio_pointer_t ref, int is_largest));
  #endif
  #if TRIO_FEATURE_PTRDIFF_T
  int  trio_get_ptrdiff TRIO_PROTO((trio_pointer_t ref)); /* t */
  void trio_set_ptrdiff TRIO_PROTO((trio_pointer_t ref, int is_ptrdiff));
  #endif
  #if TRIO_FEATURE_SIZE_T
  int  trio_get_size TRIO_PROTO((trio_pointer_t ref)); /* z / Z */
  void trio_set_size TRIO_PROTO((trio_pointer_t ref, int is_size));
  #endif
  
  /* Printing */
  int trio_print_ref TRIO_PROTO((trio_pointer_t ref, const char *format, ...));
  int trio_vprint_ref TRIO_PROTO((trio_pointer_t ref, const char *format, va_list args));
  int trio_printv_ref TRIO_PROTO((trio_pointer_t ref, const char *format, trio_pointer_t *args));
  
  void trio_print_int TRIO_PROTO((trio_pointer_t ref, int number));
  void trio_print_uint TRIO_PROTO((trio_pointer_t ref, unsigned int number));
  /*  void trio_print_long TRIO_PROTO((trio_pointer_t ref, long number)); */
  /*  void trio_print_ulong TRIO_PROTO((trio_pointer_t ref, unsigned long number)); */
  void trio_print_double TRIO_PROTO((trio_pointer_t ref, double number));
  void trio_print_string TRIO_PROTO((trio_pointer_t ref, TRIO_CONST char *string));
  void trio_print_pointer TRIO_PROTO((trio_pointer_t ref, trio_pointer_t pointer));
  
  #ifdef __cplusplus
  } /* extern "C" */
  #endif
  
  #endif /* TRIO_TRIOP_H */
  