/*-
 * Copyright (c) 1990, 1993, 1994
 *      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. 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.
 *
 * @(#)pr_time.c        8.2 (Berkeley) 4/4/94
 * $FreeBSD: src/usr.bin/w/pr_time.c,v 1.14.2.1 2002/03/12 19:51:51 phantom Exp $
 * $DragonFly: src/usr.bin/w/pr_time.c,v 1.3 2003/10/04 20:36:54 hmp Exp $
 */

#include <sys/types.h>
#include <sys/time.h>

#include <stdio.h>
#include <string.h>

#include "extern.h"

/*
 * pr_attime --
 *      Print the time since the user logged in.
 */
void
pr_attime(time_t *started, time_t *now)
{
        static char buf[256];
        struct tm tp, tm;
        time_t diff;
        char fmt[20];

        tp = *localtime(started);
        tm = *localtime(now);
        diff = *now - *started;

        /* If more than a week, use day-month-year. */
        if (diff > 86400 * 7)
                (void)strcpy(fmt, "%d%b%y");

        /* If not today, use day-hour-am/pm. */
        else if (tm.tm_mday != tp.tm_mday ||
                 tm.tm_mon != tp.tm_mon ||
                 tm.tm_year != tp.tm_year) {
        /* The line below does not take DST into consideration */
        /* else if (*now / 86400 != *started / 86400) { */
                (void)strcpy(fmt, use_ampm ? "%a%I%p" : "%a%H");
        }

        /* Default is hh:mm{am,pm}. */
        else {
                (void)strcpy(fmt, use_ampm ? "%l:%M%p" : "%k:%M");
        }

        (void)strftime_l(buf, sizeof(buf), fmt, &tp, NULL);
        (void)printf("%-7.7s", buf);
}

/*
 * pr_idle --
 *      Display the idle time.
 *      Returns number of excess characters that were used for long idle time.
 */
int
pr_idle(time_t idle)
{
        /* If idle more than 36 hours, print as a number of days. */
        if (idle >= 36 * 3600) {
                int days = idle / 86400;
                (void)printf(" %dday%s ", days, days > 1 ? "s" : " " );
                if (days >= 100)
                        return (2);
                if (days >= 10)
                        return (1);
        }

        /* If idle more than an hour, print as HH:MM. */
        else if (idle >= 3600)
                (void)printf(" %2d:%02d ",
                    (int)(idle / 3600), (int)((idle % 3600) / 60));

        else if (idle / 60 == 0)
                (void)printf("     - ");

        /* Else print the minutes idle. */
        else
                (void)printf("    %2d ", (int)(idle / 60));

        return (0); /* not idle longer than 9 days */
}