sscanf.c revision 1.18
1/* $NetBSD: sscanf.c,v 1.18 2012/03/13 21:13:46 christos 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 * Chris Torek. 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 38static char sccsid[] = "@(#)sscanf.c 8.1 (Berkeley) 6/4/93"; 39#else 40__RCSID("$NetBSD: sscanf.c,v 1.18 2012/03/13 21:13:46 christos Exp $"); 41#endif 42#endif /* LIBC_SCCS and not lint */ 43 44#include <assert.h> 45#include <errno.h> 46#include <stdarg.h> 47#include <stdio.h> 48#include <string.h> 49 50#include "reentrant.h" 51#include "local.h" 52 53static int eofread __P((void *, char *, int)); 54 55/* ARGSUSED */ 56static int 57eofread(cookie, buf, len) 58 void *cookie; 59 char *buf; 60 int len; 61{ 62 63 return (0); 64} 65 66int 67sscanf(const char *str, char const *fmt, ...) 68{ 69 int ret; 70 va_list ap; 71 FILE f; 72 size_t len; 73 struct __sfileext fext; 74 75 _DIAGASSERT(str != NULL); 76 _DIAGASSERT(fmt != NULL); 77 78 _FILEEXT_SETUP(&f, &fext); 79 f._flags = __SRD; 80 f._bf._base = f._p = __UNCONST(str); 81 len = strlen(str); 82 _DIAGASSERT(__type_fit(int, len)); 83 f._bf._size = f._r = (int)len; 84 f._read = eofread; 85 _UB(&f)._base = NULL; 86 va_start(ap, fmt); 87 ret = __svfscanf_unlocked(&f, fmt, ap); 88 va_end(ap); 89 return (ret); 90} 91