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 <?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Feed_Writer_Extension_RendererAbstract
  */
 // require_once 'Zend/Feed/Writer/Extension/RendererAbstract.php';
 
 /**
  * @category   Zend
  * @package    Zend_Feed_Writer
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Feed_Writer_Extension_Threading_Renderer_Entry
     extends Zend_Feed_Writer_Extension_RendererAbstract
 {
 
     /**
      * Set to TRUE if a rendering method actually renders something. This
      * is used to prevent premature appending of a XML namespace declaration
      * until an element which requires it is actually appended.
      *
      * @var bool
      */
     protected $_called = false;
 
     /**
      * Render entry
      *
      * @return void
      */
     public function render()
     {
         if (strtolower($this->getType()) == 'rss') {
             return; // Atom 1.0 only
         }
         $this->_setCommentLink($this->_dom, $this->_base);
         $this->_setCommentFeedLinks($this->_dom, $this->_base);
         $this->_setCommentCount($this->_dom, $this->_base);
         if ($this->_called) {
             $this->_appendNamespaces();
         }
     }
 
     /**
      * Append entry namespaces
      *
      * @return void
      */
     protected function _appendNamespaces()
     {
         $this->getRootElement()->setAttribute('xmlns:thr',
             'http://purl.org/syndication/thread/1.0');
     }
 
     /**
      * Set comment link
      *
      * @param  DOMDocument $dom
      * @param  DOMElement $root
      * @return void
      */
     protected function _setCommentLink(DOMDocument $dom, DOMElement $root)
     {
         $link = $this->getDataContainer()->getCommentLink();
         if (!$link) {
             return;
         }
         $clink = $this->_dom->createElement('link');
         $clink->setAttribute('rel', 'replies');
         $clink->setAttribute('type', 'text/html');
         $clink->setAttribute('href', $link);
         $count = $this->getDataContainer()->getCommentCount();
         if ($count !== null) {
             $clink->setAttribute('thr:count', $count);
         }
         $root->appendChild($clink);
         $this->_called = true;
     }
 
     /**
      * Set comment feed links
      *
      * @param  DOMDocument $dom
      * @param  DOMElement $root
      * @return void
      */
     protected function _setCommentFeedLinks(DOMDocument $dom, DOMElement $root)
     {
         $links = $this->getDataContainer()->getCommentFeedLinks();
         if (!$links || empty($links)) {
             return;
         }
         foreach ($links as $link) {
             $flink = $this->_dom->createElement('link');
             $flink->setAttribute('rel', 'replies');
             $flink->setAttribute('type', 'application/'. $link['type'] .'+xml');
             $flink->setAttribute('href', $link['uri']);
             $count = $this->getDataContainer()->getCommentCount();
             if ($count !== null) {
                 $flink->setAttribute('thr:count', $count);
             }
             $root->appendChild($flink);
             $this->_called = true;
         }
     }
 
     /**
      * Set entry comment count
      *
      * @param  DOMDocument $dom
      * @param  DOMElement $root
      * @return void
      */
     protected function _setCommentCount(DOMDocument $dom, DOMElement $root)
     {
         $count = $this->getDataContainer()->getCommentCount();
         if ($count === null) {
             return;
         }
         $tcount = $this->_dom->createElement('thr:total');
         $tcount->nodeValue = $count;
         $root->appendChild($tcount);
         $this->_called = true;
     }
 }