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FreeBSD/Linux Kernel Cross Reference
sys/stdio/sscanf.c

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    1 /*-
    2  * Copyright (c) 1990, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * Chris Torek.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. All advertising materials mentioning features or use of this software
   17  *    must display the following acknowledgement:
   18  *      This product includes software developed by the University of
   19  *      California, Berkeley and its contributors.
   20  * 4. Neither the name of the University nor the names of its contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  */
   36 
   37 #if defined(LIBC_SCCS) && !defined(lint)
   38 static char sccsid[] = "@(#)sscanf.c    8.1 (Berkeley) 6/4/93";
   39 #endif /* LIBC_SCCS and not lint */
   40 #include <sys/cdefs.h>
   41 __FBSDID("$FreeBSD: stable/6/lib/libc/stdio/sscanf.c 104989 2002-10-12 16:13:41Z mike $");
   42 
   43 #include <stdio.h>
   44 #include <string.h>
   45 #include <stdarg.h>
   46 #include "local.h"
   47 
   48 static int eofread(void *, char *, int);
   49 
   50 /* ARGSUSED */
   51 static int
   52 eofread(cookie, buf, len)
   53         void *cookie;
   54         char *buf;
   55         int len;
   56 {
   57 
   58         return (0);
   59 }
   60 
   61 int
   62 sscanf(const char * __restrict str, char const * __restrict fmt, ...)
   63 {
   64         int ret;
   65         va_list ap;
   66         struct __sFILEX extra;
   67         FILE f;
   68 
   69         f._file = -1;
   70         f._flags = __SRD;
   71         f._bf._base = f._p = (unsigned char *)str;
   72         f._bf._size = f._r = strlen(str);
   73         f._read = eofread;
   74         f._ub._base = NULL;
   75         f._lb._base = NULL;
   76         f._extra = &extra;
   77         INITEXTRA(&f);
   78         va_start(ap, fmt);
   79         ret = __svfscanf(&f, fmt, ap);
   80         va_end(ap);
   81         return (ret);
   82 }

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