path: root/libempathy/empathy-time.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2003-2007 Imendio AB
 * Copyright (C) 2007-2010 Collabora Ltd.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Authors: Richard Hult <richard@imendio.com>
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib/gi18n.h>

#include "empathy-time.h"

/* Note: EmpathyTime is always in UTC. */

gint64
empathy_time_get_current (void)
{
    GDateTime *now;
    gint64 result;

    now = g_date_time_new_now_utc ();
    result = g_date_time_to_unix (now);
    g_date_time_unref (now);

    return result;
}

/* Converts the UTC timestamp to a string, also in UTC. Returns NULL on failure. */
gchar *
empathy_time_to_string_utc (gint64       t,
                const gchar *format)
{
    GDateTime *d;
    char *result;

    g_return_val_if_fail (format != NULL, NULL);

    d = g_date_time_new_from_unix_utc (t);
    result = g_date_time_format (d, format);
    g_date_time_unref (d);

    return result;
}

/* Converts the UTC timestamp to a string, in local time. Returns NULL on failure. */
gchar *
empathy_time_to_string_local (gint64 t,
                  const gchar *format)
{
    GDateTime *d, *local;
    gchar *result;

    g_return_val_if_fail (format != NULL, NULL);

    d = g_date_time_new_from_unix_utc (t);
    local = g_date_time_to_local (d);
    g_date_time_unref (d);

    result = g_date_time_format (local, format);
    g_date_time_unref (local);

    return result;
}

gchar *
empathy_duration_to_string (guint seconds)
{
    if (seconds < 60) {
        return g_strdup_printf (ngettext ("%d second ago",
            "%d seconds ago", seconds), seconds);
    }
    else if (seconds < (60 * 60)) {
        seconds /= 60;
        return g_strdup_printf (ngettext ("%d minute ago",
            "%d minutes ago", seconds), seconds);
    }
    else if (seconds < (60 * 60 * 24)) {
        seconds /= 60 * 60;
        return g_strdup_printf (ngettext ("%d hour ago",
            "%d hours ago", seconds), seconds);
    }
    else if (seconds < (60 * 60 * 24 * 7)) {
        seconds /= 60 * 60 * 24;
        return g_strdup_printf (ngettext ("%d day ago",
            "%d days ago", seconds), seconds);
    }
    else if (seconds < (60 * 60 * 24 * 30)) {
        seconds /= 60 * 60 * 24 * 7;
        return g_strdup_printf (ngettext ("%d week ago",
            "%d weeks ago", seconds), seconds);
    }
    else {
        seconds /= 60 * 60 * 24 * 30;
        return g_strdup_printf (ngettext ("%d month ago",
            "%d months ago", seconds), seconds);
    }
}

gchar  *
empathy_time_to_string_relative (gint64 t)
{
    GDateTime *now, *then;
    gint   seconds;
    GTimeSpan delta;
    gchar *result;

    now = g_date_time_new_now_utc ();
    then = g_date_time_new_from_unix_utc (t);

    delta = g_date_time_difference (now, then);
    seconds = delta / G_TIME_SPAN_SECOND;

    if (seconds > 0) {
        result = empathy_duration_to_string (seconds);
    }
    else {
        result = g_strdup (_("in the future"));
    }

    g_date_time_unref (now);
    g_date_time_unref (then);

    return result;
}