external/gpl2/xcvs/dist/lib/vasprintf.c

   1 /* Formatted output to strings.
   2    Copyright (C) 1999, 2002 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 #ifdef HAVE_CONFIG_H
  19 # include <config.h>
  20 #endif
  21
  22 /* Specification.  */
  23 #include "vasprintf.h"
  24
  25 #include <stdlib.h>
  26
  27 #include "vasnprintf.h"
  28
  29 int
  30 vasprintf (char **resultp, const char *format, va_list args)
  31 {
  32   size_t length;
  33   char *result = vasnprintf (NULL, &length, format, args);
  34   if (result == NULL)
  35     return -1;
  36
  37   *resultp = result;
  38   /* Return the number of resulting bytes, excluding the trailing NUL.
  39      If it wouldn't fit in an 'int', vasnprintf() would have returned NULL
  40      and set errno to EOVERFLOW.  */
  41   return length;
  42 }