76ec5ed273
It does extremely useful things like execute sendmail and spew dubiously accurate factoids. From the feedback, it seems like it is an essential utility in a modern unix and not at all a useless bikeshed. How do those Linux people live without it? Reverts r358561.
110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1989, 1993, 1994
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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. 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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__FBSDID("$FreeBSD$");
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#include <err.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "calendar.h"
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static time_t time1, time2;
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const struct tm tm0;
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char dayname[100];
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int year1, year2;
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void
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settimes(time_t now, int before, int after, int friday, struct tm *tp1, struct tm *tp2)
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{
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struct tm tp;
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localtime_r(&now, &tp);
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/* Friday displays Monday's events */
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if (after == 0 && before == 0 && friday != -1)
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after = tp.tm_wday == friday ? 3 : 1;
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time1 = now - SECSPERDAY * before;
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localtime_r(&time1, tp1);
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year1 = 1900 + tp1->tm_year;
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time2 = now + SECSPERDAY * after;
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localtime_r(&time2, tp2);
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year2 = 1900 + tp2->tm_year;
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strftime(dayname, sizeof(dayname) - 1, "%A, %d %B %Y", tp1);
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setnnames();
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}
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/* convert Day[/Month][/Year] into unix time (since 1970)
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* Day: two digits, Month: two digits, Year: digits
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*/
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time_t
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Mktime(char *dp)
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{
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time_t t;
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int d, m, y;
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struct tm tm, tp;
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(void)time(&t);
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localtime_r(&t, &tp);
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tm = tm0;
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tm.tm_mday = tp.tm_mday;
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tm.tm_mon = tp.tm_mon;
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tm.tm_year = tp.tm_year;
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switch (sscanf(dp, "%d.%d.%d", &d, &m, &y)) {
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case 3:
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if (y > 1900)
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y -= 1900;
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tm.tm_year = y;
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/* FALLTHROUGH */
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case 2:
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tm.tm_mon = m - 1;
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/* FALLTHROUGH */
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case 1:
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tm.tm_mday = d;
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}
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#ifdef DEBUG
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fprintf(stderr, "Mktime: %d %d %s\n",
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(int)mktime(&tm), (int)t, asctime(&tm));
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#endif
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return (mktime(&tm));
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}
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