1/*	$OpenBSD: vasprintf.c,v 1.4 1998/06/21 22:13:47 millert Exp $	*/
2
3/*
4 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
19 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
21 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
27 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: src/lib/libc/stdio/vasprintf.c,v 1.19 2008/04/17 22:17:54 jhb Exp $");
32
33#include "xlocale_private.h"
34
35#include <stdio.h>
36#include <stdlib.h>
37#include <errno.h>
38#include "local.h"
39
40__private_extern__ int
41_vasprintf(printf_comp_t __restrict pc, printf_domain_t __restrict domain, char ** __restrict str, locale_t __restrict loc, const char * __restrict fmt, __va_list ap)
42{
43	int ret;
44	FILE f;
45	struct __sFILEX ext;
46	f._extra = &ext;
47	INITEXTRA(&f);
48
49	f._file = -1;
50	f._flags = __SWR | __SSTR | __SALC;
51	f._bf._base = f._p = (unsigned char *)malloc(128);
52	if (f._bf._base == NULL) {
53		*str = NULL;
54		errno = ENOMEM;
55		return (-1);
56	}
57	f._bf._size = f._w = 127;		/* Leave room for the NUL */
58	f._orientation = 0;
59	memset(&f._mbstate, 0, sizeof(mbstate_t));
60	ret = __v2printf(pc, domain, &f, loc, fmt, ap);
61	if (ret < 0) {
62		free(f._bf._base);
63		*str = NULL;
64		errno = ENOMEM;
65		return (-1);
66	}
67	*f._p = '\0';
68	*str = (char *)f._bf._base;
69	return (ret);
70}
71
72int
73vasprintf_l(char ** __restrict str, locale_t __restrict loc, const char * __restrict fmt, __va_list ap)
74{
75	return _vasprintf(XPRINTF_PLAIN, NULL, str, loc, fmt, ap);
76}
77
78int
79vasprintf(char ** __restrict str, const char * __restrict fmt, __va_list ap)
80{
81	return _vasprintf(XPRINTF_PLAIN, NULL, str, __current_locale(), fmt, ap);
82}
83