w/pr_time.c

   1 /*-
   2  * Copyright (c) 1990, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31
  32 #ifndef __APPLE__
  33 __FBSDID("$FreeBSD: src/usr.bin/w/pr_time.c,v 1.19 2002/06/07 01:41:54 jmallett Exp $");
  34 #endif
  35
  36 #ifndef lint
  37 static const char sccsid[] = "@(#)pr_time.c     8.2 (Berkeley) 4/4/94";
  38 #endif
  39
  40 #include <sys/types.h>
  41 #include <sys/time.h>
  42
  43 #include <stdio.h>
  44 #include <string.h>
  45
  46 #include "extern.h"
  47
  48 /*
  49  * pr_attime --
  50  *      Print the time since the user logged in.
  51  */
  52 void
  53 pr_attime(time_t *started, time_t *now)
  54 {
  55         static char buf[256];
  56         struct tm tp, tm;
  57         time_t diff;
  58         char fmt[20];
  59
  60         tp = *localtime(started);
  61         tm = *localtime(now);
  62         diff = *now - *started;
  63
  64         /* If more than a week, use day-month-year. */
  65         if (diff > 86400 * 7)
  66                 (void)strcpy(fmt, "%d%b%y");
  67
  68         /* If not today, use day-hour-am/pm. */
  69         else if (tm.tm_mday != tp.tm_mday ||
  70                  tm.tm_mon != tp.tm_mon ||
  71                  tm.tm_year != tp.tm_year) {
  72         /* The line below does not take DST into consideration */
  73         /* else if (*now / 86400 != *started / 86400) { */
  74                 (void)strcpy(fmt, use_ampm ? "%a%I%p" : "%a%H");
  75         }
  76
  77         /* Default is hh:mm{am,pm}. */
  78         else {
  79                 (void)strcpy(fmt, use_ampm ? "%l:%M%p" : "%k:%M");
  80         }
  81
  82         (void)strftime(buf, sizeof(buf), fmt, &tp);
  83         (void)printf("%-7.7s", buf);
  84 }
  85
  86 /*
  87  * pr_idle --
  88  *      Display the idle time.
  89  *      Returns number of excess characters that were used for long idle time.
  90  */
  91 int
  92 pr_idle(time_t idle)
  93 {
  94         /* If idle more than 36 hours, print as a number of days. */
  95         if (idle >= 36 * 3600) {
  96                 int days = idle / 86400;
  97                 (void)printf(" %dday%s ", days, days > 1 ? "s" : " " );
  98                 if (days >= 100)
  99                         return (2);
 100                 if (days >= 10)
 101                         return (1);
 102         }
 103
 104         /* If idle more than an hour, print as HH:MM. */
 105         else if (idle >= 3600)
 106                 (void)printf(" %2d:%02d ",
 107                     (int)(idle / 3600), (int)((idle % 3600) / 60));
 108
 109         else if (idle / 60 == 0)
 110                 (void)printf("     - ");
 111
 112         /* Else print the minutes idle. */
 113         else
 114                 (void)printf("    %2d ", (int)(idle / 60));
 115
 116         return (0); /* not idle longer than 9 days */
 117 }