1 /* $OpenBSD: vasprintf.c,v 1.4 1998/06/21 22:13:47 millert Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
7 * All rights reserved.
8 *
9 * Copyright (c) 2011 The FreeBSD Foundation
10 *
11 * Portions of this software were developed by David Chisnall
12 * under sponsorship from the FreeBSD Foundation.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
26 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
27 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
28 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
31 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
33 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
34 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 #include <errno.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include "xlocale_private.h"
41 #include "local.h"
42
43 int
vasprintf_l(char ** str,locale_t locale,const char * fmt,__va_list ap)44 vasprintf_l(char **str, locale_t locale, const char *fmt, __va_list ap)
45 {
46 FILE f = FAKE_FILE;
47 int serrno = errno;
48 int ret;
49 FIX_LOCALE(locale);
50
51 f._flags = __SWR | __SSTR | __SALC;
52 f._bf._base = f._p = malloc(128);
53 if (f._bf._base == NULL) {
54 *str = NULL;
55 errno = ENOMEM;
56 return (-1);
57 }
58 f._bf._size = f._w = 127; /* Leave room for the NUL */
59 ret = __vfprintf(&f, locale, serrno, fmt, ap);
60 if (ret < 0) {
61 free(f._bf._base);
62 *str = NULL;
63 errno = ENOMEM;
64 return (-1);
65 }
66 *f._p = '\0';
67 *str = (char *)f._bf._base;
68 return (ret);
69 }
70 int
vasprintf(char ** str,const char * fmt,__va_list ap)71 vasprintf(char **str, const char *fmt, __va_list ap)
72 {
73 return vasprintf_l(str, __get_locale(), fmt, ap);
74 }
75