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      1 /*	$NetBSD: vsscanf.c,v 1.21 2013/05/17 12:55:57 joerg 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  * Donn Seeley at UUNET Technologies, Inc.
      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. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 #if defined(LIBC_SCCS) && !defined(lint)
     37 #if 0
     38 static char sccsid[] = "@(#)vsscanf.c	8.1 (Berkeley) 6/4/93";
     39 #else
     40 __RCSID("$NetBSD: vsscanf.c,v 1.21 2013/05/17 12:55:57 joerg Exp $");
     41 #endif
     42 #endif /* LIBC_SCCS and not lint */
     43 
     44 #include "namespace.h"
     45 
     46 #include <assert.h>
     47 #include <errno.h>
     48 #include <locale.h>
     49 #include <stdio.h>
     50 #include <string.h>
     51 #include "reentrant.h"
     52 #include "setlocale_local.h"
     53 #include "local.h"
     54 
     55 __weak_alias(vsscanf_l, _vsscanf_l)
     56 
     57 /* ARGSUSED */
     58 static ssize_t
     59 eofread(void *cookie, void *buf, size_t len)
     60 {
     61 	return 0;
     62 }
     63 
     64 int
     65 vsscanf_l(const char *str, locale_t loc, const char *fmt, va_list ap)
     66 {
     67 	FILE f;
     68 	struct __sfileext fext;
     69 	size_t len;
     70 
     71 	_DIAGASSERT(str != NULL);
     72 	_DIAGASSERT(fmt != NULL);
     73 
     74 	_FILEEXT_SETUP(&f, &fext);
     75 	f._flags = __SRD;
     76 	f._bf._base = f._p = __UNCONST(str);
     77 	len = strlen(str);
     78 	_DIAGASSERT(__type_fit(int, len));
     79 	f._bf._size = f._r = (int)len;
     80 	f._read = eofread;
     81 	_UB(&f)._base = NULL;
     82 	return __svfscanf_unlocked_l(&f, loc, fmt, ap);
     83 }
     84 
     85 int
     86 vsscanf(const char *str, const char *fmt, va_list ap)
     87 {
     88 	return vsscanf_l(str, _current_locale(), fmt, ap);
     89 }
     90