lib/vasnprintf.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
   5    it under the terms of the GNU General Public License as published by
   6    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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License along
  15    with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 #ifndef _VASNPRINTF_H
  19 #define _VASNPRINTF_H
  20
  21 /* Get va_list.  */
  22 #include <stdarg.h>
  23
  24 /* Get size_t.  */
  25 #include <stddef.h>
  26
  27 #ifndef __attribute__
  28 /* This feature is available in gcc versions 2.5 and later.  */
  29 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
  30 #  define __attribute__(Spec) /* empty */
  31 # endif
  32 /* The __-protected variants of `format' and `printf' attributes
  33    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  34 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  35 #  define __format__ format
  36 #  define __printf__ printf
  37 # endif
  38 #endif
  39
  40 #ifdef  __cplusplus
  41 extern "C" {
  42 #endif
  43
  44 /* Write formatted output to a string dynamically allocated with malloc().
  45    You can pass a preallocated buffer for the result in RESULTBUF and its
  46    size in *LENGTHP; otherwise you pass RESULTBUF = NULL.
  47    If successful, return the address of the string (this may be = RESULTBUF
  48    if no dynamic memory allocation was necessary) and set *LENGTHP to the
  49    number of resulting bytes, excluding the trailing NUL.  Upon error, set
  50    errno and return NULL.  */
  51 extern char * asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
  52        __attribute__ ((__format__ (__printf__, 3, 4)));
  53 extern char * vasnprintf (char *resultbuf, size_t *lengthp, const char *format, va_list args)
  54        __attribute__ ((__format__ (__printf__, 3, 0)));
  55
  56 #ifdef  __cplusplus
  57 }
  58 #endif
  59
  60 #endif /* _VASNPRINTF_H */