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vsscanf.c revision 1.9 
      1 /*	$NetBSD: vsscanf.c,v 1.9 1999/09/16 11:45:32 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  * 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. 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
     42 static char sccsid[] = "@(#)vsscanf.c	8.1 (Berkeley) 6/4/93";
     43 #else
     44 __RCSID("$NetBSD: vsscanf.c,v 1.9 1999/09/16 11:45:32 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 
     53 static int eofread __P((void *, char *, int));
     54 
     55 /* ARGSUSED */
     56 static int
     57 eofread(cookie, buf, len)
     58 	void *cookie;
     59 	char *buf;
     60 	int len;
     61 {
     62 	return (0);
     63 }
     64 
     65 int
     66 vsscanf(str, fmt, ap)
     67 	const char *str;
     68 	const char *fmt;
     69 	_BSD_VA_LIST_ ap;
     70 {
     71 	FILE f;
     72 
     73 	_DIAGASSERT(str != NULL);
     74 	_DIAGASSERT(fmt != NULL);
     75 #ifdef _DIAGNOSTIC
     76 	if (str == NULL || fmt == NULL) {
     77 		errno = EFAULT;
     78 		return (EOF);
     79 	}
     80 #endif
     81 
     82 	f._flags = __SRD;
     83 	/* LINTED we don't touch str */
     84 	f._bf._base = f._p = (unsigned char *)str;
     85 	f._bf._size = f._r = strlen(str);
     86 	f._read = eofread;
     87 	f._ub._base = NULL;
     88 	f._lb._base = NULL;
     89 	return (__svfscanf(&f, fmt, ap));
     90 }
     91