1/* Formatted output to strings.
2 Copyright (C) 1999, 2002, 2006-2012 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 Lesser General Public License as published by
6 the Free Software Foundation; either version 2.1, 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 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License along
15 with this program; if not, see <http://www.gnu.org/licenses/>. */
16
17#include <config.h>
18
19/* Specification. */
20#ifdef IN_LIBASPRINTF
21# include "vasprintf.h"
22#else
23# include <stdio.h>
24#endif
25
26#include <errno.h>
27#include <limits.h>
28#include <stdlib.h>
29
30#include "vasnprintf.h"
31
32int
33vasprintf (char **resultp, const char *format, va_list args)
34{
35 size_t length;
36 char *result = vasnprintf (NULL, &length, format, args);
37 if (result == NULL)
38 return -1;
39
40 if (length > INT_MAX)
41 {
42 free (result);
43 errno = EOVERFLOW;
44 return -1;
45 }
46
47 *resultp = result;
48 /* Return the number of resulting bytes, excluding the trailing NUL. */
49 return length;
50}
51