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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
  */
 // require_once 'Zend/Feed/Reader.php';
 
 /**
  * @see Zend_Feed_Reader_Entry_Atom
  */
 // require_once 'Zend/Feed/Reader/Entry/Atom.php';
 
 
 /**
  * @see Zend_Feed_Reader_Entry_Rss
  */
 // require_once 'Zend/Feed/Reader/Entry/Rss.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
  */
 abstract class Zend_Feed_Reader_Extension_FeedAbstract
 {
     /**
      * Parsed feed data
      *
      * @var array
      */
     protected $_data = array();
 
     /**
      * Parsed feed data in the shape of a DOMDocument
      *
      * @var DOMDocument
      */
     protected $_domDocument = null;
 
     /**
      * The base XPath query used to retrieve feed data
      *
      * @var DOMXPath
      */
     protected $_xpath = null;
 
     /**
      * The XPath prefix
      *
      * @var string
      */
     protected $_xpathPrefix = '';
 
     /**
      * Constructor
      *
      * @param  Zend_Feed_Abstract $feed The source Zend_Feed object
      * @param  string $type Feed type
      * @return void
      */
     public function __construct(DomDocument $dom, $type = null, DOMXPath $xpath = null)
     {
         $this->_domDocument = $dom;
 
         if ($type !== null) {
             $this->_data['type'] = $type;
         } else {
             $this->_data['type'] = Zend_Feed_Reader::detectType($dom);
         }
 
         if ($xpath !== null) {
             $this->_xpath = $xpath;
         } else {
             $this->_xpath = new DOMXPath($this->_domDocument);
         }
 
         $this->_registerNamespaces();
     }
 
     /**
      * Get the DOM
      *
      * @return DOMDocument
      */
     public function getDomDocument()
     {
         return $this->_domDocument;
     }
 
     /**
      * Get the Feed's encoding
      *
      * @return string
      */
     public function getEncoding()
     {
         $assumed = $this->getDomDocument()->encoding;
         return $assumed;
     }
 
     /**
      * Get the feed type
      *
      * @return string
      */
     public function getType()
     {
         return $this->_data['type'];
     }
 
 
     /**
      * Return the feed as an array
      *
      * @return array
      */
     public function toArray() // untested
     {
         return $this->_data;
     }
 
     /**
      * Set the XPath query
      *
      * @param  DOMXPath $xpath
      * @return Zend_Feed_Reader_Extension_EntryAbstract
      */
     public function setXpath(DOMXPath $xpath)
     {
         $this->_xpath = $xpath;
         $this->_registerNamespaces();
         return $this;
     }
 
     /**
      * Get the DOMXPath object
      *
      * @return string
      */
     public function getXpath()
     {
         return $this->_xpath;
     }
 
     /**
      * Get the XPath prefix
      *
      * @return string
      */
     public function getXpathPrefix()
     {
         return $this->_xpathPrefix;
     }
 
     /**
      * Set the XPath prefix
      *
      * @return Zend_Feed_Reader_Feed_Atom
      */
     public function setXpathPrefix($prefix)
     {
         $this->_xpathPrefix = $prefix;
     }
 
     /**
      * Register the default namespaces for the current feed format
      */
     abstract protected function _registerNamespaces();
 }