125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/* $NetBSD: stime.c,v 1.2 2000/10/15 15:33:46 bjh21 Exp $ */
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/*
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "from: @(#)touch.c 8.2 (Berkeley) 4/28/95";
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#endif
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__RCSID("$NetBSD: stime.c,v 1.2 2000/10/15 15:33:46 bjh21 Exp $");
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#endif /* not lint */
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#include <err.h>
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#include <string.h>
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#include <time.h>
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#include <tzfile.h>
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#include "stime.h"
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#define ATOI2(s) ((s) += 2, ((s)[-2] - '0') * 10 + ((s)[-1] - '0'))
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time_t
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stime(arg)
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char *arg;
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{
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struct tm *t;
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time_t tmptime;
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int yearset;
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char *p;
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/* Start with the current time. */
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if (time(&tmptime) == (time_t)-1)
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err(1, "time");
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if ((t = localtime(&tmptime)) == NULL)
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err(1, "localtime");
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/* [[CC]YY]MMDDhhmm[.SS] */
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if ((p = strchr(arg, '.')) == NULL)
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t->tm_sec = 0; /* Seconds defaults to 0. */
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else {
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if (strlen(p + 1) != 2)
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goto terr;
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*p++ = '\0';
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t->tm_sec = ATOI2(p);
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}
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yearset = 0;
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switch (strlen(arg)) {
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case 12: /* CCYYMMDDhhmm */
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t->tm_year = ATOI2(arg) * 100 - TM_YEAR_BASE;
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yearset = 1;
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/* FALLTHOUGH */
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case 10: /* YYMMDDhhmm */
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if (yearset) {
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t->tm_year += ATOI2(arg);
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} else {
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yearset = ATOI2(arg);
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if (yearset < 69)
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t->tm_year = yearset + 2000 - TM_YEAR_BASE;
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else
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t->tm_year = yearset + 1900 - TM_YEAR_BASE;
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}
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/* FALLTHROUGH */
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case 8: /* MMDDhhmm */
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t->tm_mon = ATOI2(arg);
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--t->tm_mon; /* Convert from 01-12 to 00-11 */
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/* FALLTHROUGH */
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case 6:
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t->tm_mday = ATOI2(arg);
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/* FALLTHROUGH */
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case 4:
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t->tm_hour = ATOI2(arg);
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/* FALLTHROUGH */
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case 2:
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t->tm_min = ATOI2(arg);
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break;
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default:
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goto terr;
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}
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t->tm_isdst = -1; /* Figure out DST. */
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tmptime = mktime(t);
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if (tmptime == (time_t)-1)
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terr: errx(1,
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"out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
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return (tmptime);
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}
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