gl/vasprintf.h

   1 /* vsprintf with automatic memory allocation.
   2    Copyright (C) 2002-2003 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify it
   5    under the terms of the GNU Library General Public License as published
   6    by the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with this program; if not, write to the Free Software
  16    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17    USA.  */
  18
  19 #ifndef _VASPRINTF_H
  20 #define _VASPRINTF_H
  21
  22 #if HAVE_VASPRINTF
  23
  24 /* Get asprintf(), vasprintf() declarations.  */
  25 #include <stdio.h>
  26
  27 #else
  28
  29 /* Get va_list.  */
  30 #include <stdarg.h>
  31
  32 #ifndef __attribute__
  33 /* This feature is available in gcc versions 2.5 and later.  */
  34 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
  35 #  define __attribute__(Spec) /* empty */
  36 # endif
  37 /* The __-protected variants of `format' and `printf' attributes
  38    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  39 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  40 #  define __format__ format
  41 #  define __printf__ printf
  42 # endif
  43 #endif
  44
  45 #ifdef  __cplusplus
  46 extern "C" {
  47 #endif
  48
  49 /* Write formatted output to a string dynamically allocated with malloc().
  50    If the memory allocation succeeds, store the address of the string in
  51    *RESULT and return the number of resulting bytes, excluding the trailing
  52    NUL.  Upon memory allocation error, or some other error, return -1.  */
  53 extern int asprintf (char **result, const char *format, ...)
  54        __attribute__ ((__format__ (__printf__, 2, 3)));
  55 extern int vasprintf (char **result, const char *format, va_list args)
  56        __attribute__ ((__format__ (__printf__, 2, 0)));
  57
  58 #ifdef  __cplusplus
  59 }
  60 #endif
  61
  62 #endif
  63
  64 #endif /* _VASPRINTF_H */