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/* $OpenBSD: unctime.c,v 1.3 1997/07/05 05:36:00 millert Exp $ */
/* $NetBSD: unctime.c,v 1.10 1997/04/15 01:09:55 lukem Exp $ */
/*-
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)unctime.c 8.2 (Berkeley) 6/14/94";
#else
static char rcsid[] = "$OpenBSD: unctime.c,v 1.3 1997/07/05 05:36:00 millert Exp $";
#endif
#endif /* not lint */
#include <sys/types.h>
#include <stdio.h>
#include <time.h>
#ifdef __STDC__
#include <stdlib.h>
#include <string.h>
#endif
#ifndef __P
#include <sys/cdefs.h>
#endif
/*
* Convert a ctime(3) format string into a system format date.
* Return the date thus calculated.
*
* Return -1 if the string is not in ctime format.
*/
/*
* Offsets into the ctime string to various parts.
*/
#define E_MONTH 4
#define E_DAY 8
#define E_HOUR 11
#define E_MINUTE 14
#define E_SECOND 17
#define E_YEAR 20
static int lookup __P((char *));
time_t
unctime(str)
char *str;
{
struct tm then;
char dbuf[26];
(void) strncpy(dbuf, str, sizeof(dbuf) - 1);
dbuf[sizeof(dbuf) - 1] = '\0';
dbuf[E_MONTH+3] = '\0';
if ((then.tm_mon = lookup(&dbuf[E_MONTH])) < 0)
return (-1);
then.tm_mday = atoi(&dbuf[E_DAY]);
then.tm_hour = atoi(&dbuf[E_HOUR]);
then.tm_min = atoi(&dbuf[E_MINUTE]);
then.tm_sec = atoi(&dbuf[E_SECOND]);
then.tm_year = atoi(&dbuf[E_YEAR]) - 1900;
then.tm_isdst = -1;
return(mktime(&then));
}
static char months[] =
"JanFebMarAprMayJunJulAugSepOctNovDec";
static int
lookup(str)
char *str;
{
register char *cp, *cp2;
for (cp = months, cp2 = str; *cp != '\0'; cp += 3)
if (strncmp(cp, cp2, 3) == 0)
return((cp-months) / 3);
return(-1);
}
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