minix/lib/libc/stdio/sscanf.c

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/* $NetBSD: sscanf.c,v 1.20 2012/03/27 15:05:42 christos Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
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*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)sscanf.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: sscanf.c,v 1.20 2012/03/27 15:05:42 christos Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#include <assert.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "reentrant.h"
#include "local.h"
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/* ARGSUSED */
static ssize_t
eofread(void *cookie, void *buf, size_t len)
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{
return 0;
}
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int
sscanf(const char *str, char const *fmt, ...)
{
int ret;
va_list ap;
FILE f;
size_t len;
struct __sfileext fext;
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_DIAGASSERT(str != NULL);
_DIAGASSERT(fmt != NULL);
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_FILEEXT_SETUP(&f, &fext);
f._flags = __SRD;
f._bf._base = f._p = __UNCONST(str);
len = strlen(str);
_DIAGASSERT(__type_fit(int, len));
f._bf._size = f._r = (int)len;
f._read = eofread;
_UB(&f)._base = NULL;
va_start(ap, fmt);
ret = __svfscanf_unlocked(&f, fmt, ap);
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va_end(ap);
return ret;
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}