1: <?php
 2: /**
 3:  * Portions Copyright 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
 4:  * Copyright 2007-2012 Horde LLC (http://www.horde.org/)
 5:  *
 6:  * @category Horde
 7:  * @package  Feed
 8:  */
 9: 
10: /**
11:  * RSS channel class
12:  *
13:  * The Horde_Feed_Rss class is a concrete subclass of Horde_Feed_Base
14:  * meant for representing RSS channels. It does not add any methods to
15:  * its parent, just provides a classname to check against with the
16:  * instanceof operator, and expects to be handling RSS-formatted data
17:  * instead of Atom.
18:  *
19:  * @category Horde
20:  * @package  Feed
21:  */
22: class Horde_Feed_Rss extends Horde_Feed_Base
23: {
24:     /**
25:      * The classname for individual channel elements.
26:      * @var string
27:      */
28:     protected $_listItemClassName = 'Horde_Feed_Entry_Rss';
29: 
30:     /**
31:      * The default namespace for RSS channels.
32:      * @var string
33:      */
34:     protected $_defaultNamespace = 'rss';
35: 
36:     /**
37:      * The XML string for an "empty" RSS feed.
38:      * @var string
39:      */
40:     protected $_emptyXml = '<?xml version="1.0" encoding="utf-8"?><rss version="2.0"><channel></channel></rss>';
41: 
42:     /**
43:      * Cache the individual feed elements so they don't need to be searched for
44:      * on every operation.
45:      * @return array
46:      */
47:     protected function _buildListItemCache()
48:     {
49:         $items = array();
50:         foreach ($this->_element->childNodes as $child) {
51:             if ($child->localName == 'item') {
52:                 $items[] = $child;
53:             }
54:         }
55: 
56:         // Brute-force search for <item> elements if we haven't found any so
57:         // far.
58:         if (!count($items)) {
59:             foreach ($this->_element->ownerDocument->getElementsByTagName('item') as $child) {
60:                 $items[] = $child;
61:             }
62:         }
63: 
64:         return $items;
65:     }
66: 
67: }
68: