1 /* $NetBSD: unctime.c,v 1.17 2013/06/15 01:27:19 christos Exp $ */
2
3 /*-
4 * Copyright (c) 1980, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)unctime.c 8.2 (Berkeley) 6/14/94";
36 #else
37 __RCSID("$NetBSD: unctime.c,v 1.17 2013/06/15 01:27:19 christos Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <sys/param.h>
42 #include <time.h>
43 #include "dump.h"
44
45 /*
46 * Convert a ctime(3) format string into a system format date.
47 * Return the date thus calculated.
48 *
49 * Return -1 if the string is not in ctime format.
50 */
51
52 time_t
unctime(const char * str)53 unctime(const char *str)
54 {
55 struct tm then;
56
57 str = strptime(str, "%a %b %e %H:%M:%S %Y", &then);
58 then.tm_isdst = -1;
59 if (str == NULL || (*str != '\n' && *str != '\0'))
60 return (time_t) -1;
61 return mktime(&then);
62 }
63