1 /* Formatted output to strings.
2 Copyright (C) 1999, 2002, 2006-2008 Free Software Foundation, Inc.
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 3, or (at your option)
7 any later version.
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.
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. */
18 #include <config.h>
20 /* Specification. */
21 #ifdef IN_LIBASPRINTF
22 # include "vasprintf.h"
23 #else
24 # include <stdio.h>
25 #endif
27 #include <errno.h>
28 #include <limits.h>
29 #include <stdlib.h>
31 #include "vasnprintf.h"
33 int
34 vasprintf (char **resultp, const char *format, va_list args)
35 {
36 size_t length;
37 char *result = vasnprintf (NULL, &length, format, args);
38 if (result == NULL)
39 return -1;
41 if (length > INT_MAX)
42 {
43 free (result);
44 errno = EOVERFLOW;
45 return -1;
46 }
48 *resultp = result;
49 /* Return the number of resulting bytes, excluding the trailing NUL. */
50 return length;
51 }