path: root/calendar/timeutil.c

/* Miscellaneous time-related utilities
 *
 * Copyright (C) 1998 The Free Software Foundation
 *
 * Authors: Federico Mena <federico@nuclecu.unam.mx>
 *          Miguel de Icaza <miguel@nuclecu.unam.mx>
 */

#include <libgnome/libgnome.h>
#include "timeutil.h"

#define digit_at(x,y) (x [y] - '0')
    
time_t
time_from_isodate (char *str)
{
    struct tm my_tm;

    my_tm.tm_year = digit_at (str, 0) * 1000 + digit_at (str, 1) * 100 +
        digit_at (str, 2) * 10 + digit_at (str, 3);

    my_tm.tm_mon  = digit_at (str, 4) * 10 + digit_at (str, 5);
    my_tm.tm_mday = digit_at (str, 6) * 10 + digit_at (str, 7);
    my_tm.tm_hour = digit_at (str, 9) * 10 + digit_at (str, 10);
    my_tm.tm_min  = digit_at (str, 11) * 10 + digit_at (str, 12);
    my_tm.tm_sec  = digit_at (str, 13) * 10 + digit_at (str, 14);
    my_tm.tm_isdst = -1;
    
    return mktime (&my_tm);
}

time_t
time_from_start_duration (time_t start, char *duration)
{
    printf ("Not yet implemented\n");
    return 0;
}

char *
format_simple_hour (int hour, int use_am_pm)
{
    static char buf[256];

    /* I don't know whether this is the best way to internationalize it.
     * Does any language use different conventions? - Federico
     */

    if (use_am_pm)
        sprintf (buf, "%d%s",
             (hour == 0) ? 12 : (hour > 12) ? (hour - 12) : hour,
             (hour < 12) ? _("am") : _("pm"));
    else
        sprintf (buf, "%02d%s", hour, _("h"));

    return buf;

}