xref: /freebsd/lib/libc/stdio/asprintf.c (revision 15aa00d597010009c3fb718ded37438aa3f601ab)
1 /*-
2  * Copyright (c) 1996  Peter Wemm <peter@freebsd.org>
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23  * SUCH DAMAGE.
24  */
25 
26 #if defined(LIBC_RCS) && !defined(lint)
27 static char rcsid[] = "$Id$";
28 #endif /* LIBC_RCS and not lint */
29 
30 #include <stdio.h>
31 #if __STDC__
32 #include <stdarg.h>
33 #else
34 #include <varargs.h>
35 #endif
36 
37 #if __STDC__
38 int
39 asprintf(char **str, char const *fmt, ...)
40 #else
41 int
42 asprintf(str, fmt, va_alist)
43 	char **str;
44 	char *fmt;
45 	va_dcl
46 #endif
47 {
48 	int ret;
49 	va_list ap;
50 
51 #if __STDC__
52 	va_start(ap, fmt);
53 #else
54 	va_start(ap);
55 #endif
56 	ret = vasprintf(str, fmt, ap);
57 	va_end(ap);
58 	return (ret);
59 }
60