NetBSD/usr.bin/w/attime.c

107 lines
3.5 KiB
C

/*-
* Copyright (c) 1990 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
/*static char sccsid[] = "from: @(#)attime.c 5.2 (Berkeley) 8/30/90";*/
static char rcsid[] = "$Id: attime.c,v 1.2 1993/08/01 18:03:18 mycroft Exp $";
#endif /* not lint */
#include <sys/types.h>
#include <sys/time.h>
#include <stdio.h>
#include <string.h>
#define HR (60 * 60)
#define DAY (24 * HR)
#define MON (30 * DAY)
static time_t now;
/*
* prttime prints a time in hours and minutes or minutes and seconds.
* The character string tail is printed at the end, obvious
* strings to pass are "", " ", or "am".
*/
static char *
prttime(tim, tail)
time_t tim;
char *tail;
{
int mins;
static char timebuf[32];
if (tim >= 60) {
mins = tim % 60;
(void) sprintf(timebuf, "%2d:%02d%s", (int)(tim / 60), mins,
tail);
} else if (tim >= 0)
(void) sprintf(timebuf, " %2d%s", (int)tim, tail);
else
(void) strcpy(timebuf, tail);
return (timebuf);
}
static char *weekday[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
static char *month[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
/* prtat prints a 12 hour time given a pointer to a time of day */
char *
attime(started)
time_t *started;
{
struct tm *p;
register int hr, pm;
static char prbuff[64];
if (now == 0)
(void) time(&now);
p = localtime(started);
hr = p->tm_hour;
pm = (hr > 11);
if (hr > 11)
hr -= 12;
if (hr == 0)
hr = 12;
if (now - *started <= 18 * HR)
return (prttime((time_t)hr * 60 + p->tm_min, pm ? "pm" : "am"));
if (now - *started <= 7 * DAY)
(void) sprintf(prbuff, "%*s%d%s", hr < 10 ? 4 : 3,
weekday[p->tm_wday], hr, pm ? "pm" : "am");
else
(void) sprintf(prbuff, "%2d%s%2d", p->tm_mday,
month[p->tm_mon], p->tm_year);
return (prbuff);
}