1 files changed, 67 insertions, 0 deletions
diff --git a/inc/magpie/rss_utils.inc b/inc/magpie/rss_utils.inc
new file mode 100644
index 000000000..655db8a19
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+++ b/inc/magpie/rss_utils.inc
@@ -0,0 +1,67 @@
+<?php
+/*
+ * Project:     MagpieRSS: a simple RSS integration tool
+ * File:        rss_utils.inc, utility methods for working with RSS
+ * Author:      Kellan Elliott-McCrea <kellan@protest.net>
+ * Version:		0.51
+ * License:		GPL
+ *
+ * The lastest version of MagpieRSS can be obtained from:
+ * http://magpierss.sourceforge.net
+ *
+ * For questions, help, comments, discussion, etc., please join the
+ * Magpie mailing list:
+ * magpierss-general@lists.sourceforge.net
+ */
+
+
+/*======================================================================*\
+    Function: parse_w3cdtf
+    Purpose:  parse a W3CDTF date into unix epoch
+
+	NOTE: http://www.w3.org/TR/NOTE-datetime
+\*======================================================================*/
+
+function parse_w3cdtf ( $date_str ) {
+	
+	# regex to match wc3dtf
+	$pat = "/(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2})(:(\d{2}))?(?:([-+])(\d{2}):?(\d{2})|(Z))?/";
+	
+	if ( preg_match( $pat, $date_str, $match ) ) {
+		list( $year, $month, $day, $hours, $minutes, $seconds) = 
+			array( $match[1], $match[2], $match[3], $match[4], $match[5], $match[6]);
+		
+		# calc epoch for current date assuming GMT
+		$epoch = gmmktime( $hours, $minutes, $seconds, $month, $day, $year);
+		
+		$offset = 0;
+		if ( $match[10] == 'Z' ) {
+			# zulu time, aka GMT
+		}
+		else {
+			list( $tz_mod, $tz_hour, $tz_min ) =
+				array( $match[8], $match[9], $match[10]);
+			
+			# zero out the variables
+			if ( ! $tz_hour ) { $tz_hour = 0; }
+			if ( ! $tz_min ) { $tz_min = 0; }
+		
+			$offset_secs = (($tz_hour*60)+$tz_min)*60;
+			
+			# is timezone ahead of GMT?  then subtract offset
+			#
+			if ( $tz_mod == '+' ) {
+				$offset_secs = $offset_secs * -1;
+			}
+			
+			$offset = $offset_secs;	
+		}
+		$epoch = $epoch + $offset;
+		return $epoch;
+	}
+	else {
+		return -1;
+	}
+}
+
+?>