--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Feed/Reader/Extension/Syndication/Feed.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,168 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Feed_Reader
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Feed.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * @see Zend_Feed_Reader_Extension_FeedAbstract
+ */
+require_once 'Zend/Feed/Reader/Extension/FeedAbstract.php';
+
+require_once 'Zend/Date.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Feed_Reader
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Feed_Reader_Extension_Syndication_Feed
+    extends Zend_Feed_Reader_Extension_FeedAbstract
+{
+    /**
+     * Get update period
+     * @return string
+     */
+    public function getUpdatePeriod()
+    {
+        $name = 'updatePeriod';
+        $period = $this->_getData($name);
+
+        if ($period === null) {
+            $this->_data[$name] = 'daily';
+            return 'daily'; //Default specified by spec
+        }
+
+        switch ($period)
+        {
+            case 'hourly':
+            case 'daily':
+            case 'weekly':
+            case 'yearly':
+                return $period;
+            default:
+                throw new Zend_Feed_Exception("Feed specified invalid update period: '$period'."
+                    .  " Must be one of hourly, daily, weekly or yearly"
+                );
+        }
+    }
+
+    /**
+     * Get update frequency
+     * @return int
+     */
+    public function getUpdateFrequency()
+    {
+        $name = 'updateFrequency';
+        $freq = $this->_getData($name, 'number');
+
+        if (!$freq || $freq < 1) {
+            $this->_data[$name] = 1;
+            return 1;
+        }
+
+        return $freq;
+    }
+
+    /**
+     * Get update frequency as ticks
+     * @return int
+     */
+    public function getUpdateFrequencyAsTicks()
+    {
+        $name = 'updateFrequency';
+        $freq = $this->_getData($name, 'number');
+
+        if (!$freq || $freq < 1) {
+            $this->_data[$name] = 1;
+            $freq = 1;
+        }
+
+        $period = $this->getUpdatePeriod();
+        $ticks = 1;
+
+        switch ($period)
+        {
+            //intentional fall through
+            case 'yearly':
+                $ticks *= 52; //TODO: fix generalisation, how?
+            case 'weekly':
+                $ticks *= 7;
+            case 'daily':
+                $ticks *= 24;
+            case 'hourly':
+                $ticks *= 3600;
+                break;
+            default: //Never arrive here, exception thrown in getPeriod()
+                break;
+        }
+
+        return $ticks / $freq;
+    }
+
+    /**
+     * Get update base
+     *
+     * @return Zend_Date|null
+     */
+    public function getUpdateBase()
+    {
+        $updateBase = $this->_getData('updateBase');
+        $date = null;
+        if ($updateBase) {
+            $date = new Zend_Date;
+            $date->set($updateBase, Zend_Date::W3C);
+        }
+        return $date;
+    }
+
+    /**
+     * Get the entry data specified by name
+     *
+     * @param string $name
+     * @param string $type
+     * @return mixed|null
+     */
+    private function _getData($name, $type = 'string')
+    {
+        if (array_key_exists($name, $this->_data)) {
+            return $this->_data[$name];
+        }
+
+        $data = $this->_xpath->evaluate($type . '(' . $this->getXpathPrefix() . '/syn10:' . $name . ')');
+
+        if (!$data) {
+            $data = null;
+        }
+
+        $this->_data[$name] = $data;
+
+        return $data;
+    }
+
+    /**
+     * Register Syndication namespaces
+     *
+     * @return void
+     */
+    protected function _registerNamespaces()
+    {
+        $this->_xpath->registerNamespace('syn10', 'http://purl.org/rss/1.0/modules/syndication/');
+    }
+}