1/* $Id: asprintf.c,v 1.1.1.2 2011/08/17 18:40:06 jmmv Exp $ */
2
3/*
4 * Copyright (c) 2006 Nicholas Marriott <nicm@users.sourceforge.net>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include <stdarg.h>
20#include <stdio.h>
21#ifdef HAVE_STDINT_H
22#include <stdint.h>
23#else
24#include <inttypes.h>
25#endif
26#include <string.h>
27
28#include "tmux.h"
29
30int
31asprintf(char **ret, const char *fmt, ...)
32{
33	va_list	ap;
34	int	n;
35
36	va_start(ap, fmt);
37	n = vasprintf(ret, fmt, ap);
38	va_end(ap);
39
40	return (n);
41}
42
43int
44vasprintf(char **ret, const char *fmt, va_list ap)
45{
46	int	 n;
47
48	if ((n = vsnprintf(NULL, 0, fmt, ap)) < 0)
49		goto error;
50
51	*ret = xmalloc(n + 1);
52	if ((n = vsnprintf(*ret, n + 1, fmt, ap)) < 0) {
53		xfree(*ret);
54		goto error;
55	}
56
57	return (n);
58
59error:
60	*ret = NULL;
61	return (-1);
62}
63