text: <?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
   * @license    http://framework.zend.com/license/new-bsd     New BSD License
   * @version    $Id$
   */
  
  /**
   * @see Zend_Feed_Reader
   */
  #require_once 'Zend/Feed/Reader.php';
  
  /**
   * @see Zend_Feed_Reader_EntryInterface
   */
  #require_once 'Zend/Feed/Reader/EntryInterface.php';
  
  /**
   * @see Zend_Feed_Reader_EntryAbstract
   */
  #require_once 'Zend/Feed/Reader/EntryAbstract.php';
  
  /**
   * @see Zend_Feed_Reader_Extension_Atom_Entry
   */
  #require_once 'Zend/Feed/Reader/Extension/Atom/Entry.php';
  
  /**
   * @category   Zend
   * @package    Zend_Feed_Reader
   * @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_Reader_Entry_Atom extends Zend_Feed_Reader_EntryAbstract implements Zend_Feed_Reader_EntryInterface
  {
      /**
       * XPath query
       *
       * @var string
       */
      protected $_xpathQuery = '';
  
      /**
       * Constructor
       *
       * @param  DOMElement $entry
       * @param  int $entryKey
       * @param  string $type
       * @return void
       */
      public function __construct(DOMElement $entry, $entryKey, $type = null)
      {
          parent::__construct($entry, $entryKey, $type);
  
          // Everyone by now should know XPath indices start from 1 not 0
          $this->_xpathQuery = '//atom:entry[' . ($this->_entryKey + 1) . ']';
  
          $atomClass = Zend_Feed_Reader::getPluginLoader()->getClassName('Atom_Entry');
          $this->_extensions['Atom_Entry'] = new $atomClass($entry, $entryKey, $type);
  
          $threadClass = Zend_Feed_Reader::getPluginLoader()->getClassName('Thread_Entry');
          $this->_extensions['Thread_Entry'] = new $threadClass($entry, $entryKey, $type);
  
          $threadClass = Zend_Feed_Reader::getPluginLoader()->getClassName('DublinCore_Entry');
          $this->_extensions['DublinCore_Entry'] = new $threadClass($entry, $entryKey, $type);
      }
  
      /**
       * Get the specified author
       *
       * @param  int $index
       * @return string|null
       */
      public function getAuthor($index = 0)
      {
          $authors = $this->getAuthors();
  
          if (isset($authors[$index])) {
              return $authors[$index];
          }
  
          return null;
      }
  
      /**
       * Get an array with feed authors
       *
       * @return array
       */
      public function getAuthors()
      {
          if (array_key_exists('authors', $this->_data)) {
              return $this->_data['authors'];
          }
  
          $people = $this->getExtension('Atom')->getAuthors();
  
          $this->_data['authors'] = $people;
  
          return $this->_data['authors'];
      }
  
      /**
       * Get the entry content
       *
       * @return string
       */
      public function getContent()
      {
          if (array_key_exists('content', $this->_data)) {
              return $this->_data['content'];
          }
  
          $content = $this->getExtension('Atom')->getContent();
  
          $this->_data['content'] = $content;
  
          return $this->_data['content'];
      }
  
      /**
       * Get the entry creation date
       *
       * @return string
       */
      public function getDateCreated()
      {
          if (array_key_exists('datecreated', $this->_data)) {
              return $this->_data['datecreated'];
          }
  
          $dateCreated = $this->getExtension('Atom')->getDateCreated();
  
          $this->_data['datecreated'] = $dateCreated;
  
          return $this->_data['datecreated'];
      }
  
      /**
       * Get the entry modification date
       *
       * @return string
       */
      public function getDateModified()
      {
          if (array_key_exists('datemodified', $this->_data)) {
              return $this->_data['datemodified'];
          }
  
          $dateModified = $this->getExtension('Atom')->getDateModified();
  
          $this->_data['datemodified'] = $dateModified;
  
          return $this->_data['datemodified'];
      }
  
      /**
       * Get the entry description
       *
       * @return string
       */
      public function getDescription()
      {
          if (array_key_exists('description', $this->_data)) {
              return $this->_data['description'];
          }
  
          $description = $this->getExtension('Atom')->getDescription();
  
          $this->_data['description'] = $description;
  
          return $this->_data['description'];
      }
  
      /**
       * Get the entry enclosure
       *
       * @return string
       */
      public function getEnclosure()
      {
          if (array_key_exists('enclosure', $this->_data)) {
              return $this->_data['enclosure'];
          }
  
          $enclosure = $this->getExtension('Atom')->getEnclosure();
  
          $this->_data['enclosure'] = $enclosure;
  
          return $this->_data['enclosure'];
      }
  
      /**
       * Get the entry ID
       *
       * @return string
       */
      public function getId()
      {
          if (array_key_exists('id', $this->_data)) {
              return $this->_data['id'];
          }
  
          $id = $this->getExtension('Atom')->getId();
  
          $this->_data['id'] = $id;
  
          return $this->_data['id'];
      }
  
      /**
       * Get a specific link
       *
       * @param  int $index
       * @return string
       */
      public function getLink($index = 0)
      {
          if (!array_key_exists('links', $this->_data)) {
              $this->getLinks();
          }
  
          if (isset($this->_data['links'][$index])) {
              return $this->_data['links'][$index];
          }
  
          return null;
      }
  
      /**
       * Get all links
       *
       * @return array
       */
      public function getLinks()
      {
          if (array_key_exists('links', $this->_data)) {
              return $this->_data['links'];
          }
  
          $links = $this->getExtension('Atom')->getLinks();
  
          $this->_data['links'] = $links;
  
          return $this->_data['links'];
      }
  
      /**
       * Get a permalink to the entry
       *
       * @return string
       */
      public function getPermalink()
      {
          return $this->getLink(0);
      }
  
      /**
       * Get the entry title
       *
       * @return string
       */
      public function getTitle()
      {
          if (array_key_exists('title', $this->_data)) {
              return $this->_data['title'];
          }
  
          $title = $this->getExtension('Atom')->getTitle();
  
          $this->_data['title'] = $title;
  
          return $this->_data['title'];
      }
  
      /**
       * Get the number of comments/replies for current entry
       *
       * @return integer
       */
      public function getCommentCount()
      {
          if (array_key_exists('commentcount', $this->_data)) {
              return $this->_data['commentcount'];
          }
  
          $commentcount = $this->getExtension('Thread')->getCommentCount();
  
          if (!$commentcount) {
              $commentcount = $this->getExtension('Atom')->getCommentCount();
          }
  
          $this->_data['commentcount'] = $commentcount;
  
          return $this->_data['commentcount'];
      }
  
      /**
       * Returns a URI pointing to the HTML page where comments can be made on this entry
       *
       * @return string
       */
      public function getCommentLink()
      {
          if (array_key_exists('commentlink', $this->_data)) {
              return $this->_data['commentlink'];
          }
  
          $commentlink = $this->getExtension('Atom')->getCommentLink();
  
          $this->_data['commentlink'] = $commentlink;
  
          return $this->_data['commentlink'];
      }
  
      /**
       * Returns a URI pointing to a feed of all comments for this entry
       *
       * @return string
       */
      public function getCommentFeedLink()
      {
          if (array_key_exists('commentfeedlink', $this->_data)) {
              return $this->_data['commentfeedlink'];
          }
  
          $commentfeedlink = $this->getExtension('Atom')->getCommentFeedLink();
  
          $this->_data['commentfeedlink'] = $commentfeedlink;
  
          return $this->_data['commentfeedlink'];
      }
  
      /**
       * Get category data as a Zend_Feed_Reader_Collection_Category object
       *
       * @return Zend_Feed_Reader_Collection_Category
       */
      public function getCategories()
      {
          if (array_key_exists('categories', $this->_data)) {
              return $this->_data['categories'];
          }
  
          $categoryCollection = $this->getExtension('Atom')->getCategories();
  
          if (count($categoryCollection) == 0) {
              $categoryCollection = $this->getExtension('DublinCore')->getCategories();
          }
  
          $this->_data['categories'] = $categoryCollection;
  
          return $this->_data['categories'];
      }
  
      /**
       * Get source feed metadata from the entry
       *
       * @return Zend_Feed_Reader_Feed_Atom_Source|null
       */
      public function getSource()
      {
          if (array_key_exists('source', $this->_data)) {
              return $this->_data['source'];
          }
  
          $source = $this->getExtension('Atom')->getSource();
  
          $this->_data['source'] = $source;
  
          return $this->_data['source'];
      }
  
      /**
       * Set the XPath query (incl. on all Extensions)
       *
       * @param DOMXPath $xpath
       */
      public function setXpath(DOMXPath $xpath)
      {
          parent::setXpath($xpath);
          foreach ($this->_extensions as $extension) {
              $extension->setXpath($this->_xpath);
          }
      }
  }
  