libtracker-common: Add GDateTime helper functions

Add functions that allow parsing and producing ISO8601 exactly as
we used to expect them.

2 files changed, 36 insertions, 0 deletions

diff --git a/src/libtracker-common/tracker-date-time.c b/src/libtracker-common/tracker-date-time.c
index 003239f6a..388a9725f 100644
--- a/src/libtracker-common/tracker-date-time.c
+++ b/src/libtracker-common/tracker-date-time.c
@@ -349,3 +349,35 @@ tracker_date_time_get_offset (const GValue *value)
 	/* UTC offset */
 	return value->data[1].v_int;
 }
+
+GDateTime *
+tracker_date_new_from_iso8601 (const gchar  *string,
+			       GError      **error)
+{
+	GDateTime *datetime;
+	GTimeZone *tz;
+
+	tz = g_time_zone_new_local ();
+	datetime = g_date_time_new_from_iso8601 (string, tz);
+	g_time_zone_unref (tz);
+
+	if (!datetime) {
+		g_set_error (error,
+			     TRACKER_DATE_ERROR,
+			     TRACKER_DATE_ERROR_INVALID_ISO8601,
+		             "'%s' is not a ISO 8601 date string. "
+			     "Allowed form is CCYY-MM-DDThh:mm:ss[.ssssss][Z|(+|-)hh:mm]",
+			     string);
+	}
+
+	return datetime;
+}
+
+gchar *
+tracker_date_format_iso8601 (GDateTime *datetime)
+{
+	if (g_date_time_get_utc_offset (datetime) == 0)
+		return g_date_time_format (datetime, "%C%y-%m-%dT%TZ");
+	else
+		return g_date_time_format (datetime, "%C%y-%m-%dT%T%:z");
+}
diff --git a/src/libtracker-common/tracker-date-time.h b/src/libtracker-common/tracker-date-time.h
index cd3111b49..6290b0d73 100644
--- a/src/libtracker-common/tracker-date-time.h
+++ b/src/libtracker-common/tracker-date-time.h
@@ -58,6 +58,10 @@ gdouble  tracker_string_to_date                (const gchar  *date_string,
 gchar *  tracker_date_to_string                (gdouble       date_time,
                                                 gint          offset);
 
+GDateTime * tracker_date_new_from_iso8601 (const gchar  *string,
+					   GError      **error);
+gchar * tracker_date_format_iso8601 (GDateTime *datetime);
+
 G_END_DECLS
 
 #endif /* __LIBTRACKER_COMMON_DATE_TIME_H__ */