sscanf.c revision 1.11 
1/*	$NetBSD: sscanf.c,v 1.11 1999/09/20 04:39:33 lukem Exp $	*/
2
3/*-
4 * Copyright (c) 1990, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Chris Torek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 */
38
39#include <sys/cdefs.h>
40#if defined(LIBC_SCCS) && !defined(lint)
41#if 0
42static char sccsid[] = "@(#)sscanf.c	8.1 (Berkeley) 6/4/93";
43#else
44__RCSID("$NetBSD: sscanf.c,v 1.11 1999/09/20 04:39:33 lukem Exp $");
45#endif
46#endif /* LIBC_SCCS and not lint */
47
48#include <assert.h>
49#include <errno.h>
50#include <stdio.h>
51#include <string.h>
52#if __STDC__
53#include <stdarg.h>
54#else
55#include <varargs.h>
56#endif
57#include "local.h"
58
59static int eofread __P((void *, char *, int));
60
61/* ARGSUSED */
62static int
63eofread(cookie, buf, len)
64	void *cookie;
65	char *buf;
66	int len;
67{
68
69	return (0);
70}
71
72int
73#if __STDC__
74sscanf(const char *str, char const *fmt, ...)
75#else
76sscanf(str, fmt, va_alist)
77	const char *str;
78	char *fmt;
79	va_dcl
80#endif
81{
82	int ret;
83	va_list ap;
84	FILE f;
85
86	_DIAGASSERT(str != NULL);
87	_DIAGASSERT(fmt != NULL);
88
89	f._flags = __SRD;
90	/* LINTED we don't touch the string */
91	f._bf._base = f._p = (unsigned char *)str;
92	f._bf._size = f._r = strlen(str);
93	f._read = eofread;
94	f._ub._base = NULL;
95	f._lb._base = NULL;
96#if __STDC__
97	va_start(ap, fmt);
98#else
99	va_start(ap);
100#endif
101	ret = __svfscanf(&f, fmt, ap);
102	va_end(ap);
103	return (ret);
104}
105