diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Feed/Writer/Renderer/Entry/Atom.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Feed/Writer/Renderer/Entry/Atom.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,444 @@
+<?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_Writer
+ * @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: Atom.php 22758 2010-08-01 19:23:27Z padraic $
+ */
+
+/**
+ * @see Zend_Feed_Writer_Renderer_RendererAbstract
+ */
+require_once 'Zend/Feed/Writer/Renderer/RendererAbstract.php';
+
+require_once 'Zend/Feed/Writer/Renderer/Feed/Atom/Source.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Feed_Writer
+ * @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_Writer_Renderer_Entry_Atom
+    extends Zend_Feed_Writer_Renderer_RendererAbstract
+    implements Zend_Feed_Writer_Renderer_RendererInterface
+{
+    /**
+     * Constructor
+     * 
+     * @param  Zend_Feed_Writer_Entry $container 
+     * @return void
+     */
+    public function __construct (Zend_Feed_Writer_Entry $container)
+    {
+        parent::__construct($container);
+    }
+
+    /**
+     * Render atom entry
+     * 
+     * @return Zend_Feed_Writer_Renderer_Entry_Atom
+     */
+    public function render()
+    {
+        $this->_dom = new DOMDocument('1.0', $this->_container->getEncoding());
+        $this->_dom->formatOutput = true;
+        $entry = $this->_dom->createElementNS(Zend_Feed_Writer::NAMESPACE_ATOM_10, 'entry');
+        $this->_dom->appendChild($entry);
+        
+        $this->_setSource($this->_dom, $entry);
+        $this->_setTitle($this->_dom, $entry);
+        $this->_setDescription($this->_dom, $entry);
+        $this->_setDateCreated($this->_dom, $entry);
+        $this->_setDateModified($this->_dom, $entry);
+        $this->_setLink($this->_dom, $entry);
+        $this->_setId($this->_dom, $entry);
+        $this->_setAuthors($this->_dom, $entry);
+        $this->_setEnclosure($this->_dom, $entry);
+        $this->_setContent($this->_dom, $entry);
+        $this->_setCategories($this->_dom, $entry);
+
+        foreach ($this->_extensions as $ext) {
+            $ext->setType($this->getType());
+            $ext->setRootElement($this->getRootElement());
+            $ext->setDomDocument($this->getDomDocument(), $entry);
+            $ext->render();
+        }
+        
+        return $this;
+    }
+    
+    /**
+     * Set entry title
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setTitle(DOMDocument $dom, DOMElement $root)
+    {
+        if(!$this->getDataContainer()->getTitle()) {
+            require_once 'Zend/Feed/Exception.php';
+            $message = 'Atom 1.0 entry elements MUST contain exactly one'
+            . ' atom:title element but a title has not been set';
+            $exception = new Zend_Feed_Exception($message);
+            if (!$this->_ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->_exceptions[] = $exception;
+                return;
+            }
+        }
+        $title = $dom->createElement('title');
+        $root->appendChild($title);
+        $title->setAttribute('type', 'html');
+        $cdata = $dom->createCDATASection($this->getDataContainer()->getTitle());
+        $title->appendChild($cdata);
+    }
+    
+    /**
+     * Set entry description
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setDescription(DOMDocument $dom, DOMElement $root)
+    {
+        if(!$this->getDataContainer()->getDescription()) {
+            return; // unless src content or base64
+        }
+        $subtitle = $dom->createElement('summary');
+        $root->appendChild($subtitle);
+        $subtitle->setAttribute('type', 'html');
+        $cdata = $dom->createCDATASection(
+            $this->getDataContainer()->getDescription()
+        );
+        $subtitle->appendChild($cdata);
+    }
+    
+    /**
+     * Set date entry was modified
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setDateModified(DOMDocument $dom, DOMElement $root)
+    {
+        if(!$this->getDataContainer()->getDateModified()) {
+            require_once 'Zend/Feed/Exception.php';
+            $message = 'Atom 1.0 entry elements MUST contain exactly one'
+            . ' atom:updated element but a modification date has not been set';
+            $exception = new Zend_Feed_Exception($message);
+            if (!$this->_ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->_exceptions[] = $exception;
+                return;
+            }
+        }
+
+        $updated = $dom->createElement('updated');
+        $root->appendChild($updated);
+        $text = $dom->createTextNode(
+            $this->getDataContainer()->getDateModified()->get(Zend_Date::ISO_8601)
+        );
+        $updated->appendChild($text);
+    }
+    
+    /**
+     * Set date entry was created
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setDateCreated(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateCreated()) {
+            return;
+        }
+        $el = $dom->createElement('published');
+        $root->appendChild($el);
+        $text = $dom->createTextNode(
+            $this->getDataContainer()->getDateCreated()->get(Zend_Date::ISO_8601)
+        );
+        $el->appendChild($text);
+    }
+    
+    /**
+     * Set entry authors 
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->_container->getAuthors();
+        if ((!$authors || empty($authors))) {
+            /**
+             * This will actually trigger an Exception at the feed level if
+             * a feed level author is not set.
+             */
+            return;
+        }
+        foreach ($authors as $data) {
+            $author = $this->_dom->createElement('author');
+            $name = $this->_dom->createElement('name');
+            $author->appendChild($name);
+            $root->appendChild($author);
+            $text = $dom->createTextNode($data['name']);
+            $name->appendChild($text);
+            if (array_key_exists('email', $data)) {
+                $email = $this->_dom->createElement('email');
+                $author->appendChild($email);
+                $text = $dom->createTextNode($data['email']);
+                $email->appendChild($text);
+            }
+            if (array_key_exists('uri', $data)) {
+                $uri = $this->_dom->createElement('uri');
+                $author->appendChild($uri);
+                $text = $dom->createTextNode($data['uri']);
+                $uri->appendChild($text);
+            }
+        }
+    }
+    
+    /**
+     * Set entry enclosure
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setEnclosure(DOMDocument $dom, DOMElement $root)
+    {
+        $data = $this->_container->getEnclosure();
+        if ((!$data || empty($data))) {
+            return;
+        }
+        $enclosure = $this->_dom->createElement('link');
+        $enclosure->setAttribute('rel', 'enclosure');
+        if (isset($data['type'])) {
+            $enclosure->setAttribute('type', $data['type']);
+        }
+        if (isset($data['length'])) {
+            $enclosure->setAttribute('length', $data['length']);
+        }
+        $enclosure->setAttribute('href', $data['uri']);
+        $root->appendChild($enclosure);
+    }
+    
+    protected function _setLink(DOMDocument $dom, DOMElement $root)
+    {
+        if(!$this->getDataContainer()->getLink()) {
+            return;
+        }
+        $link = $dom->createElement('link');
+        $root->appendChild($link);
+        $link->setAttribute('rel', 'alternate');
+        $link->setAttribute('type', 'text/html');
+        $link->setAttribute('href', $this->getDataContainer()->getLink());
+    }
+    
+    /**
+     * Set entry identifier 
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setId(DOMDocument $dom, DOMElement $root)
+    {
+        if(!$this->getDataContainer()->getId()
+        && !$this->getDataContainer()->getLink()) {
+            require_once 'Zend/Feed/Exception.php';
+            $message = 'Atom 1.0 entry elements MUST contain exactly one '
+            . 'atom:id element, or as an alternative, we can use the same '
+            . 'value as atom:link however neither a suitable link nor an '
+            . 'id have been set';
+            $exception = new Zend_Feed_Exception($message);
+            if (!$this->_ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->_exceptions[] = $exception;
+                return;
+            }
+        }
+
+        if (!$this->getDataContainer()->getId()) {
+            $this->getDataContainer()->setId(
+                $this->getDataContainer()->getLink());
+        }
+        if (!Zend_Uri::check($this->getDataContainer()->getId()) &&
+        !preg_match("#^urn:[a-zA-Z0-9][a-zA-Z0-9\-]{1,31}:([a-zA-Z0-9\(\)\+\,\.\:\=\@\;\$\_\!\*\-]|%[0-9a-fA-F]{2})*#",
+            $this->getDataContainer()->getId()
+        ) && !$this->_validateTagUri($this->getDataContainer()->getId())) {
+            require_once 'Zend/Feed/Exception.php';
+            throw new Zend_Feed_Exception('Atom 1.0 IDs must be a valid URI/IRI');
+        }
+        $id = $dom->createElement('id');
+        $root->appendChild($id);
+        $text = $dom->createTextNode($this->getDataContainer()->getId());
+        $id->appendChild($text);
+    }
+    
+    /**
+     * Validate a URI using the tag scheme (RFC 4151)
+     *
+     * @param string $id
+     * @return bool
+     */
+    protected function _validateTagUri($id)
+    {
+        if (preg_match('/^tag:(?<name>.*),(?<date>\d{4}-?\d{0,2}-?\d{0,2}):(?<specific>.*)(.*:)*$/', $id, $matches)) {
+            $dvalid = false;
+            $nvalid = false;
+            $date = $matches['date'];
+            $d6 = strtotime($date);
+            if ((strlen($date) == 4) && $date <= date('Y')) {
+                $dvalid = true;
+            } elseif ((strlen($date) == 7) && ($d6 < strtotime("now"))) {
+                $dvalid = true;
+            } elseif ((strlen($date) == 10) && ($d6 < strtotime("now"))) {
+                $dvalid = true;
+            }
+            $validator = new Zend_Validate_EmailAddress;
+            if ($validator->isValid($matches['name'])) {
+                $nvalid = true;
+            } else {
+                $nvalid = $validator->isValid('info@' . $matches['name']);
+            }
+            return $dvalid && $nvalid;
+
+        }
+        return false;
+    }
+    
+    /**
+     * Set entry content 
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setContent(DOMDocument $dom, DOMElement $root)
+    {
+        $content = $this->getDataContainer()->getContent();
+        if (!$content && !$this->getDataContainer()->getLink()) {
+            require_once 'Zend/Feed/Exception.php';
+            $message = 'Atom 1.0 entry elements MUST contain exactly one '
+            . 'atom:content element, or as an alternative, at least one link '
+            . 'with a rel attribute of "alternate" to indicate an alternate '
+            . 'method to consume the content.';
+            $exception = new Zend_Feed_Exception($message);
+            if (!$this->_ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->_exceptions[] = $exception;
+                return;
+            }
+        }
+        if (!$content) {
+            return;
+        }
+        $element = $dom->createElement('content');
+        $element->setAttribute('type', 'xhtml');
+        $xhtmlElement = $this->_loadXhtml($content);
+        $xhtml = $dom->importNode($xhtmlElement, true);
+        $element->appendChild($xhtml);
+        $root->appendChild($element);
+    }
+    
+    /**
+     * Load a HTML string and attempt to normalise to XML
+     */
+    protected function _loadXhtml($content)
+    {
+        $xhtml = '';
+        if (class_exists('tidy', false)) {
+            $tidy = new tidy;
+            $config = array(
+                'output-xhtml' => true,
+                'show-body-only' => true,
+                'quote-nbsp' => false
+            );
+            $encoding = str_replace('-', '', $this->getEncoding());
+            $tidy->parseString($content, $config, $encoding);
+            $tidy->cleanRepair();
+            $xhtml = (string) $tidy;
+        } else {
+            $xhtml = $content;
+        }
+        $xhtml = preg_replace(array(
+            "/(<[\/]?)([a-zA-Z]+)/"   
+        ), '$1xhtml:$2', $xhtml);
+        $dom = new DOMDocument('1.0', $this->getEncoding());
+        $dom->loadXML('<xhtml:div xmlns:xhtml="http://www.w3.org/1999/xhtml">'
+            . $xhtml . '</xhtml:div>');
+        return $dom->documentElement;
+    }
+    
+    /**
+     * Set entry cateories 
+     * 
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setCategories(DOMDocument $dom, DOMElement $root)
+    {
+        $categories = $this->getDataContainer()->getCategories();
+        if (!$categories) {
+            return;
+        }
+        foreach ($categories as $cat) {
+            $category = $dom->createElement('category');
+            $category->setAttribute('term', $cat['term']);
+            if (isset($cat['label'])) {
+                $category->setAttribute('label', $cat['label']);
+            } else {
+                $category->setAttribute('label', $cat['term']);
+            }
+            if (isset($cat['scheme'])) {
+                $category->setAttribute('scheme', $cat['scheme']);
+            }
+            $root->appendChild($category);
+        }
+    }
+    
+    /**
+     * Append Source element (Atom 1.0 Feed Metadata)
+     *
+     * @param  DOMDocument $dom 
+     * @param  DOMElement $root 
+     * @return void
+     */
+    protected function _setSource(DOMDocument $dom, DOMElement $root)
+    {
+        $source = $this->getDataContainer()->getSource();
+        if (!$source) {
+            return;
+        }
+        $renderer = new Zend_Feed_Writer_Renderer_Feed_Atom_Source($source);
+        $renderer->setType($this->getType());
+        $element = $renderer->render()->getElement();
+        $imported = $dom->importNode($element, true);
+        $root->appendChild($imported); 
+    }
+}