<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Abstract.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * @see Zend_Feed

 */

require_once 'Zend/Feed.php';

/**

 * @see Zend_Feed_Element

 */

require_once 'Zend/Feed/Element.php';

/**

 * Zend_Feed_Entry_Abstract represents a single entry in an Atom or RSS

 * feed.

 *

 * @category   Zend

 * @package    Zend_Feed

 * @copyright  Copyright (c) 2005-2010 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();

                $status = @$doc->loadXML($element);

                @ini_restore('track_errors');

                if (!$status) {

                    // 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);

    }

}