usr/src/etc/getty/get_date.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)get_date.c  5.2 (Berkeley) 10/22/87";
#endif not lint

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

static char *days[] = {
        "Sun", "Mon", "Tues", "Wed", "Thurs", "Fri", "Sat"
};

static char *months[] = {
        "Jan", "Feb", "Mar", "Apr", "May", "June",
        "July", "Aug", "Sept", "Oct", "Nov", "Dec"
};

#define AM "am"
#define PM "pm"

get_date(datebuffer)
        char *datebuffer;
{
        struct tm *localtime(), *tmp;
        struct timeval tv;
        int realhour;
        char *zone;

        gettimeofday(&tv, 0);
        tmp = localtime(&tv.tv_sec);

        realhour = tmp->tm_hour;
        zone = AM;                      /* default to morning */
        if (tmp->tm_hour == 0)
                realhour = 12;          /* midnight */
        else if (tmp->tm_hour == 12)
                zone = PM;              /* noon */
        else if (tmp->tm_hour >= 13 && tmp->tm_hour <= 23) { /* afternoon */
                realhour = realhour - 12;
                zone = PM;
        }

        /* format is '8:10pm on Sunday, 16 Sept 1973' */

        (void)sprintf(datebuffer, "%d:%02d%s on %s, %d %s %d",
                realhour,
                tmp->tm_min,
                zone,
                days[tmp->tm_wday],
                tmp->tm_mday,
                months[tmp->tm_mon],
                1900 + tmp->tm_year);
}