diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Service/Delicious/PostList.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Service/Delicious/PostList.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,300 @@
+<?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_Service
+ * @subpackage Delicious
+ * @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: PostList.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+
+/**
+ * List of posts retrived from the del.icio.us web service
+ *
+ * @category   Zend
+ * @package    Zend_Service
+ * @subpackage Delicious
+ * @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_Service_Delicious_PostList implements Countable, Iterator, ArrayAccess
+{
+    /**
+     * @var array Array of Zend_Service_Delicious_Post
+     */
+    protected $_posts = array();
+
+    /**
+     * @var Zend_Service_Delicious Service that has downloaded the post list
+     */
+    protected $_service;
+
+    /**
+     * @var int Iterator key
+     */
+    protected $_iteratorKey = 0;
+
+    /**
+     * @param  Zend_Service_Delicious $service Service that has downloaded the post
+     * @param  DOMNodeList|array      $posts
+     * @return void
+     */
+    public function __construct(Zend_Service_Delicious $service, $posts = null)
+    {
+        $this->_service = $service;
+        if ($posts instanceof DOMNodeList) {
+            $this->_constructFromNodeList($posts);
+        } else if (is_array($posts)) {
+            $this->_constructFromArray($posts);
+        }
+    }
+
+    /**
+     * Transforms DOMNodeList to array of posts
+     *
+     * @param  DOMNodeList $nodeList
+     * @return void
+     */
+    private function _constructFromNodeList(DOMNodeList $nodeList)
+    {
+        for ($i = 0; $i < $nodeList->length; $i++) {
+            $curentNode = $nodeList->item($i);
+            if($curentNode->nodeName == 'post') {
+                $this->_addPost(new Zend_Service_Delicious_Post($this->_service, $curentNode));
+            }
+        }
+    }
+
+    /**
+     * Transforms the Array to array of posts
+     *
+     * @param  array $postList
+     * @return void
+     */
+    private function _constructFromArray(array $postList)
+    {
+        foreach ($postList as $f_post) {
+            $this->_addPost(new Zend_Service_Delicious_SimplePost($f_post));
+        }
+    }
+
+    /**
+     * Add a post
+     *
+     * @param  Zend_Service_Delicious_SimplePost $post
+     * @return Zend_Service_Delicious_PostList
+     */
+    protected function _addPost(Zend_Service_Delicious_SimplePost $post)
+    {
+        $this->_posts[] = $post;
+
+        return $this;
+    }
+
+    /**
+     * Filter list by list of tags
+     *
+     * @param  array $tags
+     * @return Zend_Service_Delicious_PostList
+     */
+    public function withTags(array $tags)
+    {
+        $postList = new self($this->_service);
+
+        foreach ($this->_posts as $post) {
+            if (count(array_diff($tags, $post->getTags())) == 0) {
+                $postList->_addPost($post);
+            }
+        }
+
+        return $postList;
+    }
+
+    /**
+     * Filter list by tag
+     *
+     * @param  string $tag
+     * @return Zend_Service_Delicious_PostList
+     */
+    public function withTag($tag)
+    {
+        return $this->withTags(func_get_args());
+    }
+
+    /**
+     * Filter list by urls matching a regular expression
+     *
+     * @param  string $regexp
+     * @return Zend_Service_Delicious_PostList
+     */
+    public function withUrl($regexp)
+    {
+        $postList = new self($this->_service);
+
+        foreach ($this->_posts as $post) {
+            if (preg_match($regexp, $post->getUrl())) {
+                $postList->_addPost($post);
+            }
+        }
+
+        return $postList;
+    }
+
+    /**
+     * Return number of posts
+     *
+     * Implement Countable::count()
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->_posts);
+    }
+
+    /**
+     * Return the current element
+     *
+     * Implement Iterator::current()
+     *
+     * @return Zend_Service_Delicious_SimplePost
+     */
+    public function current()
+    {
+        return $this->_posts[$this->_iteratorKey];
+    }
+
+    /**
+     * Return the key of the current element
+     *
+     * Implement Iterator::key()
+     *
+     * @return int
+     */
+    public function key()
+    {
+        return $this->_iteratorKey;
+    }
+
+    /**
+     * Move forward to next element
+     *
+     * Implement Iterator::next()
+     *
+     * @return void
+     */
+    public function next()
+    {
+        $this->_iteratorKey += 1;
+    }
+
+    /**
+     * Rewind the Iterator to the first element
+     *
+     * Implement Iterator::rewind()
+     *
+     * @return void
+     */
+    public function rewind()
+    {
+        $this->_iteratorKey = 0;
+    }
+
+    /**
+     * Check if there is a current element after calls to rewind() or next()
+     *
+     * Implement Iterator::valid()
+     *
+     * @return bool
+     */
+    public function valid()
+    {
+        $numItems = $this->count();
+
+        if ($numItems > 0 && $this->_iteratorKey < $numItems) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Whether the offset exists
+     *
+     * Implement ArrayAccess::offsetExists()
+     *
+     * @param   int     $offset
+     * @return  bool
+     */
+    public function offsetExists($offset)
+    {
+        return ($offset < $this->count());
+    }
+
+    /**
+     * Return value at given offset
+     *
+     * Implement ArrayAccess::offsetGet()
+     *
+     * @param   int     $offset
+     * @throws  OutOfBoundsException
+     * @return  Zend_Service_Delicious_SimplePost
+     */
+    public function offsetGet($offset)
+    {
+        if ($this->offsetExists($offset)) {
+            return $this->_posts[$offset];
+        } else {
+            throw new OutOfBoundsException('Illegal index');
+        }
+    }
+
+    /**
+     * Throws exception because all values are read-only
+     *
+     * Implement ArrayAccess::offsetSet()
+     *
+     * @param   int     $offset
+     * @param   string  $value
+     * @throws  Zend_Service_Delicious_Exception
+     */
+    public function offsetSet($offset, $value)
+    {
+        /**
+         * @see Zend_Service_Delicious_Exception
+         */
+        require_once 'Zend/Service/Delicious/Exception.php';
+        throw new Zend_Service_Delicious_Exception('You are trying to set read-only property');
+    }
+
+    /**
+     * Throws exception because all values are read-only
+     *
+     * Implement ArrayAccess::offsetUnset()
+     *
+     * @param   int     $offset
+     * @throws  Zend_Service_Delicious_Exception
+     */
+    public function offsetUnset($offset)
+    {
+        /**
+         * @see Zend_Service_Delicious_Exception
+         */
+        require_once 'Zend/Service/Delicious/Exception.php';
+        throw new Zend_Service_Delicious_Exception('You are trying to unset read-only property');
+    }
+}