stdio/FreeBSD/sscanf.c

   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: src/lib/libc/stdio/sscanf.c,v 1.11 2002/10/12 16:13:41 mike Exp $");
  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 }