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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_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_Extension_FeedAbstract
  */
 // require_once 'Zend/Feed/Reader/Extension/FeedAbstract.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_Extension_Podcast_Feed extends Zend_Feed_Reader_Extension_FeedAbstract
 {
     /**
      * Get the entry author
      *
      * @return string
      */
     public function getCastAuthor()
     {
         if (isset($this->_data['author'])) {
             return $this->_data['author'];
         }
 
         $author = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:author)');
 
         if (!$author) {
             $author = null;
         }
 
         $this->_data['author'] = $author;
 
         return $this->_data['author'];
     }
 
     /**
      * Get the entry block
      *
      * @return string
      */
     public function getBlock()
     {
         if (isset($this->_data['block'])) {
             return $this->_data['block'];
         }
 
         $block = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:block)');
 
         if (!$block) {
             $block = null;
         }
 
         $this->_data['block'] = $block;
 
         return $this->_data['block'];
     }
 
     /**
      * Get the entry category
      *
      * @return string
      */
     public function getCategories()
     {
         if (isset($this->_data['categories'])) {
             return $this->_data['categories'];
         }
 
         $categoryList = $this->_xpath->query($this->getXpathPrefix() . '/itunes:category');
 
         $categories = array();
 
         if ($categoryList->length > 0) {
             foreach ($categoryList as $node) {
                 $children = null;
 
                 if ($node->childNodes->length > 0) {
                     $children = array();
 
                     foreach ($node->childNodes as $childNode) {
                         if (!($childNode instanceof DOMText)) {
                             $children[$childNode->getAttribute('text')] = null;
                         }
                     }
                 }
 
                 $categories[$node->getAttribute('text')] = $children;
             }
         }
 
 
         if (!$categories) {
             $categories = null;
         }
 
         $this->_data['categories'] = $categories;
 
         return $this->_data['categories'];
     }
 
     /**
      * Get the entry explicit
      *
      * @return string
      */
     public function getExplicit()
     {
         if (isset($this->_data['explicit'])) {
             return $this->_data['explicit'];
         }
 
         $explicit = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:explicit)');
 
         if (!$explicit) {
             $explicit = null;
         }
 
         $this->_data['explicit'] = $explicit;
 
         return $this->_data['explicit'];
     }
 
     /**
      * Get the entry image
      *
      * @return string
      */
     public function getImage()
     {
         if (isset($this->_data['image'])) {
             return $this->_data['image'];
         }
 
         $image = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:image/@href)');
 
         if (!$image) {
             $image = null;
         }
 
         $this->_data['image'] = $image;
 
         return $this->_data['image'];
     }
 
     /**
      * Get the entry keywords
      *
      * @return string
      */
     public function getKeywords()
     {
         if (isset($this->_data['keywords'])) {
             return $this->_data['keywords'];
         }
 
         $keywords = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:keywords)');
 
         if (!$keywords) {
             $keywords = null;
         }
 
         $this->_data['keywords'] = $keywords;
 
         return $this->_data['keywords'];
     }
 
     /**
      * Get the entry's new feed url
      *
      * @return string
      */
     public function getNewFeedUrl()
     {
         if (isset($this->_data['new-feed-url'])) {
             return $this->_data['new-feed-url'];
         }
 
         $newFeedUrl = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:new-feed-url)');
 
         if (!$newFeedUrl) {
             $newFeedUrl = null;
         }
 
         $this->_data['new-feed-url'] = $newFeedUrl;
 
         return $this->_data['new-feed-url'];
     }
 
     /**
      * Get the entry owner
      *
      * @return string
      */
     public function getOwner()
     {
         if (isset($this->_data['owner'])) {
             return $this->_data['owner'];
         }
 
         $owner = null;
 
         $email = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:owner/itunes:email)');
         $name  = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:owner/itunes:name)');
 
         if (!empty($email)) {
             $owner = $email . (empty($name) ? '' : ' (' . $name . ')');
         } else if (!empty($name)) {
             $owner = $name;
         }
 
         if (!$owner) {
             $owner = null;
         }
 
         $this->_data['owner'] = $owner;
 
         return $this->_data['owner'];
     }
 
     /**
      * Get the entry subtitle
      *
      * @return string
      */
     public function getSubtitle()
     {
         if (isset($this->_data['subtitle'])) {
             return $this->_data['subtitle'];
         }
 
         $subtitle = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:subtitle)');
 
         if (!$subtitle) {
             $subtitle = null;
         }
 
         $this->_data['subtitle'] = $subtitle;
 
         return $this->_data['subtitle'];
     }
 
     /**
      * Get the entry summary
      *
      * @return string
      */
     public function getSummary()
     {
         if (isset($this->_data['summary'])) {
             return $this->_data['summary'];
         }
 
         $summary = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:summary)');
 
         if (!$summary) {
             $summary = null;
         }
 
         $this->_data['summary'] = $summary;
 
         return $this->_data['summary'];
     }
 
     /**
      * Register iTunes namespace
      *
      */
     protected function _registerNamespaces()
     {
         $this->_xpath->registerNamespace('itunes', 'http://www.itunes.com/dtds/podcast-1.0.dtd');
     }
 }