xref: /freebsd/lib/libc/stdio/vsscanf.c (revision 3bdf775801b218aa5a89564839405b122f4b233e)
1 /*-
2  * Copyright (c) 1990, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Copyright (c) 2011 The FreeBSD Foundation
6  * All rights reserved.
7  * Portions of this software were developed by David Chisnall
8  * under sponsorship from the FreeBSD Foundation.
9  *
10  * This code is derived from software contributed to Berkeley by
11  * Donn Seeley at UUNET Technologies, Inc.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. Neither the name of the University nor the names of its contributors
22  *    may be used to endorse or promote products derived from this software
23  *    without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  */
37 
38 #if defined(LIBC_SCCS) && !defined(lint)
39 static char sccsid[] = "@(#)vsscanf.c	8.1 (Berkeley) 6/4/93";
40 #endif /* LIBC_SCCS and not lint */
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
43 
44 #include <stdio.h>
45 #include <string.h>
46 #include "local.h"
47 #include "xlocale_private.h"
48 
49 static int
50 eofread(void *, char *, int);
51 
52 /* ARGSUSED */
53 static int
54 eofread(void *cookie, char *buf, int len)
55 {
56 
57 	return (0);
58 }
59 
60 int
61 vsscanf_l(const char * __restrict str, locale_t locale,
62 		const char * __restrict fmt, __va_list ap)
63 {
64 	FILE f = FAKE_FILE;
65 	FIX_LOCALE(locale);
66 
67 	f._flags = __SRD;
68 	f._bf._base = f._p = (unsigned char *)str;
69 	f._bf._size = f._r = strlen(str);
70 	f._read = eofread;
71 	return (__svfscanf(&f, locale, fmt, ap));
72 }
73 int
74 vsscanf(const char * __restrict str, const char * __restrict fmt,
75 	__va_list ap)
76 {
77 	return vsscanf_l(str, __get_locale(), fmt, ap);
78 }
79