Kyberia v1.0

[mirrors/Kyberia-bloodline.git] / inc / rss / rss_utils.inc

diff --git a/inc/rss/rss_utils.inc b/inc/rss/rss_utils.inc
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+++ b/inc/rss/rss_utils.inc
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+<?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:            0.3
+ * License:            GPL
+ *
+ * The lastest version of MagpieRSS can be obtained from:
+ * http://magpierss.sourceforge.net
+ *
+ * For questions, help, comments, discussion, etc., please join the
+ * Mapgie 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[7], $match[8], $match[9]);
+
+                       # 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;
+       }
+}
+
+?>