sprintf.c revision a910abcd194830d2d113b3e183eb7df4d36cd92e 
1/*	$OpenBSD: sprintf.c,v 1.13 2005/10/10 12:00:52 espie Exp $ */
2/*-
3 * Copyright (c) 1990, 1993
4 *	The Regents of the University of California.  All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Chris Torek.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <stdio.h>
35#include <string.h>
36#include <stdarg.h>
37#include <limits.h>
38#include "local.h"
39
40#if defined(APIWARN)
41__warn_references(sprintf,
42    "warning: sprintf() is often misused, please use snprintf()");
43#endif
44
45int
46sprintf(char *str, const char *fmt, ...)
47{
48	int ret;
49	va_list ap;
50	FILE f;
51	struct __sfileext fext;
52
53	_FILEEXT_SETUP(&f, &fext);
54	f._file = -1;
55	f._flags = __SWR | __SSTR;
56	f._bf._base = f._p = (unsigned char *)str;
57	f._bf._size = f._w = INT_MAX;
58	va_start(ap, fmt);
59	ret = vfprintf(&f, fmt, ap);
60	va_end(ap);
61	*f._p = '\0';
62	return (ret);
63}
64