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authorXavier Claessens <xclaesse@src.gnome.org>2007-04-26 05:59:20 +0800
committerXavier Claessens <xclaesse@src.gnome.org>2007-04-26 05:59:20 +0800
commit40c0d1ba5434b5c5d4f8b7ff6fedd1add5c03ce6 (patch)
treec1426dc8388fc711bf4a5e8de42fd3a4b76e6842 /libempathy/gossip-time.c
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diff --git a/libempathy/gossip-time.c b/libempathy/gossip-time.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 2003-2007 Imendio AB
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Authors: Richard Hult <richard@imendio.com>
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "gossip-time.h"
+
+/* Note: GossipTime is always in UTC. */
+
+GossipTime
+gossip_time_get_current (void)
+{
+ return time (NULL);
+}
+
+time_t
+gossip_time_get_local_time (struct tm *tm)
+{
+ const gchar *timezone;
+ time_t t;
+
+ timezone = g_getenv ("TZ");
+ g_setenv ("TZ", "", TRUE);
+
+ tzset ();
+
+ t = mktime (tm);
+
+ if (timezone) {
+ g_setenv ("TZ", timezone, TRUE);
+ } else {
+ g_unsetenv ("TZ");
+ }
+
+ tzset ();
+
+ return t;
+}
+
+/* The format is: "20021209T23:51:30" and is in UTC. 0 is returned on
+ * failure. The alternative format "20021209" is also accepted.
+ */
+GossipTime
+gossip_time_parse (const gchar *str)
+{
+ struct tm tm;
+ gint year, month;
+ gint n_parsed;
+
+ memset (&tm, 0, sizeof (struct tm));
+
+ n_parsed = sscanf (str, "%4d%2d%2dT%2d:%2d:%2d",
+ &year, &month, &tm.tm_mday, &tm.tm_hour,
+ &tm.tm_min, &tm.tm_sec);
+ if (n_parsed != 3 && n_parsed != 6) {
+ return 0;
+ }
+
+ tm.tm_year = year - 1900;
+ tm.tm_mon = month - 1;
+ tm.tm_isdst = -1;
+
+ return gossip_time_get_local_time (&tm);
+}
+
+/* Converts the UTC timestamp to a string, also in UTC. Returns NULL on failure. */
+gchar *
+gossip_time_to_string_utc (GossipTime t,
+ const gchar *format)
+{
+ gchar stamp[128];
+ struct tm *tm;
+
+ g_return_val_if_fail (format != NULL, NULL);
+
+ tm = gmtime (&t);
+ if (strftime (stamp, sizeof (stamp), format, tm) == 0) {
+ return NULL;
+ }
+
+ return g_strdup (stamp);
+}
+
+/* Converts the UTC timestamp to a string, in local time. Returns NULL on failure. */
+gchar *
+gossip_time_to_string_local (GossipTime t,
+ const gchar *format)
+{
+ gchar stamp[128];
+ struct tm *tm;
+
+ g_return_val_if_fail (format != NULL, NULL);
+
+ tm = localtime (&t);
+ if (strftime (stamp, sizeof (stamp), format, tm) == 0) {
+ return NULL;
+ }
+
+ return g_strdup (stamp);
+}
+