[darcs-to-svn @ initial import]

svn path=/trunk/; revision=2

1 files changed, 124 insertions, 0 deletions

diff --git a/libempathy/gossip-time.c b/libempathy/gossip-time.c
new file mode 100644
index 000000000..a1956354e
--- /dev/null
+++ b/libempathy/gossip-time.c
@@ -0,0 +1,124 @@
+/* -*- 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);
+}
+