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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
  * @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
  */
 // require_once 'Zend/Feed.php';
 
 /**
  * @see Zend_Feed_Element
  */
 // require_once 'Zend/Feed/Element.php';
 
 /** @see Zend_Xml_Security */
 // require_once 'Zend/Xml/Security.php';
 
 /**
  * Zend_Feed_Entry_Abstract represents a single entry in an Atom or RSS
  * feed.
  *
  * @category   Zend
  * @package    Zend_Feed
  * @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_Entry_Abstract extends Zend_Feed_Element
 {
     /**
      * Root XML element for entries. Subclasses must define this to a
      * non-null value.
      *
      * @var string
      */
     protected $_rootElement;
 
     /**
      * Root namespace for entries. Subclasses may define this to a
      * non-null value.
      *
      * @var string
      */
     protected $_rootNamespace = null;
 
 
     /**
      * Zend_Feed_Entry_Abstract constructor
      *
      * The Zend_Feed_Entry_Abstract constructor takes the URI of the feed the entry
      * is part of, and optionally an XML construct (usually a
      * SimpleXMLElement, but it can be an XML string or a DOMNode as
      * well) that contains the contents of the entry.
      *
      * @param  string $uri
      * @param  SimpleXMLElement|DOMNode|string  $element
      * @return void
      * @throws Zend_Feed_Exception
      */
     public function __construct($uri = null, $element = null)
     {
         if (!($element instanceof DOMElement)) {
             if ($element) {
                 // Load the feed as an XML DOMDocument object
                 @ini_set('track_errors', 1);
                 $doc = new DOMDocument();
                 $doc = @Zend_Xml_Security::scan($element, $doc);
                 @ini_restore('track_errors');
 
                 if (!$doc) {
                     // prevent the class to generate an undefined variable notice (ZF-2590)
                     if (!isset($php_errormsg)) {
                         if (function_exists('xdebug_is_enabled')) {
                             $php_errormsg = '(error message not available, when XDebug is running)';
                         } else {
                             $php_errormsg = '(error message not available)';
                         }
                     }
 
                     /**
                      * @see Zend_Feed_Exception
                      */
                     // require_once 'Zend/Feed/Exception.php';
                     throw new Zend_Feed_Exception("DOMDocument cannot parse XML: $php_errormsg");
                 }
 
                 $element = $doc->getElementsByTagName($this->_rootElement)->item(0);
                 if (!$element) {
                     /**
                      * @see Zend_Feed_Exception
                      */
                     // require_once 'Zend/Feed/Exception.php';
                     throw new Zend_Feed_Exception('No root <' . $this->_rootElement . '> element found, cannot parse feed.');
                 }
             } else {
                 $doc = new DOMDocument('1.0', 'utf-8');
                 if ($this->_rootNamespace !== null) {
                     $element = $doc->createElementNS(Zend_Feed::lookupNamespace($this->_rootNamespace), $this->_rootElement);
                 } else {
                     $element = $doc->createElement($this->_rootElement);
                 }
             }
         }
 
         parent::__construct($element);
     }
 
 }