/libraries/domit/xml_domit_rss_lite.php

<?php

/**

* DOMIT! RSS Lite is a lightweight version of the DOMIT! Lite RSS parser

* @package domit-rss

* @subpackage domit-rss-lite

* @version 0.51

* @copyright (C) 2004 John Heinstein. All rights reserved

* @license http://www.gnu.org/copyleft/lesser.html LGPL License

* @author John Heinstein <johnkarl@nbnet.nb.ca>

* @link http://www.engageinteractive.com/domitrss/ DOMIT! RSS Home Page

* DOMIT! RSS is Free Software

**/



if (!defined('DOMIT_RSS_INCLUDE_PATH')) {

	define('DOMIT_RSS_INCLUDE_PATH', (dirname(__FILE__) . DIRECTORY_SEPARATOR));

}



/** current version of DOMIT! RSS Lite */

define ('DOMIT_RSS_LITE_VERSION', '0.51');



require_once(DOMIT_RSS_INCLUDE_PATH . 'xml_domit_rss_shared.php');



/**

* The base DOMIT! RSS Lite document class

*

* @package domit-rss

* @subpackage domit-rss-lite

* @author John Heinstein <johnkarl@nbnet.nb.ca>

*/

class xml_domit_rss_document_lite extends xml_domit_rss_base_document {

	/**

	* Constructor

	* @param string Path to the rss file

	* @param string Directory for cache files

	* @param int Expiration time for a cache file

	*/

	function xml_domit_rss_document_lite($url = '', $cacheDir = './', $cacheTime = 3600) {

	    $this->parser = 'DOMIT_RSS_LITE';

	    $this->xml_domit_rss_base_document($url, $cacheDir, $cacheTime);

	} //xml_domit_rss_document_lite



 	/**

	* Performs initialization of the RSS document

	*/

	function _init() {

		$total = $this->node->documentElement->childCount;

		$itemCounter = 0;

		$channelCounter = 0;



		for ($i = 0; $i < $total; $i++) {

			$currNode =& $this->node->documentElement->childNodes[$i];

			$tagName = strtolower($currNode->nodeName);



			switch ($tagName) {

				case DOMIT_RSS_ELEMENT_ITEM:

					$this->domit_rss_items[$itemCounter] = new xml_domit_rss_item_lite($currNode);

					$itemCounter++;

					break;

				case DOMIT_RSS_ELEMENT_CHANNEL:

					$this->domit_rss_channels[$channelCounter] = new xml_domit_rss_channel_lite($currNode);

					$channelCounter++;

					break;

                case DOMIT_RSS_ELEMENT_TITLE:

                case DOMIT_RSS_ELEMENT_LINK:

                case DOMIT_RSS_ELEMENT_DESCRIPTION:

                    $this->DOMIT_RSS_indexer[$tagName] = new xml_domit_rss_simpleelement($currNode);

                    break;

			}

		}



		if ($itemCounter != 0) {

			$this->DOMIT_RSS_indexer[DOMIT_RSS_ARRAY_ITEMS] =& $this->domit_rss_items;

		}



		if ($channelCounter != 0) {

			$this->DOMIT_RSS_indexer[DOMIT_RSS_ARRAY_CHANNELS] =& $this->domit_rss_channels;

		}



		$this->handleChannelElementsEmbedded();

	} //_init



	/**

	* Returns the current version of DOMIT! RSS

	* @return Object The current version of DOMIT! RSS

	*/

	function getVersion() {

		return DOMIT_RSS_LITE_VERSION;

	} //getVersion

} //xml_domit_rss_document_lite



/**

* Represents an RSS channel

*

* @package domit-rss

* @subpackage domit-rss-lite

* @author John Heinstein <johnkarl@nbnet.nb.ca>

*/

class xml_domit_rss_channel_lite extends xml_domit_rss_elementindexer {

	/** @var array A list of references to channel items */

	var $domit_rss_items = array();



	/**

	* Constructor

	* @param Object A DOM node containing channel data

	*/

	function xml_domit_rss_channel_lite(&$channel) {

		$this->node =& $channel;

		$this->_init();

	} //xml_domit_rss_channel_lite



	/**

	* Performs initialization of the RSS channel element

	*/

	function _init() {

		$total = $this->node->childCount;

		$itemCounter = 0;



		for ($i = 0; $i < $total; $i++) {

			$currNode =& $this->node->childNodes[$i];

			$tagName = strtolower($currNode->nodeName);



			switch ($tagName) {

				case DOMIT_RSS_ELEMENT_ITEM:

					$this->domit_rss_items[$itemCounter] = new xml_domit_rss_item_lite($currNode);

					$itemCounter++;

					break;

				case DOMIT_RSS_ELEMENT_TITLE:

				case DOMIT_RSS_ELEMENT_LINK:

				case DOMIT_RSS_ELEMENT_DESCRIPTION:

					$this->DOMIT_RSS_indexer[$tagName] = new xml_domit_rss_simpleelement($currNode);

					break;

			}

		}



		if ($itemCounter != 0) {

			$this->DOMIT_RSS_indexer[DOMIT_RSS_ARRAY_ITEMS] =& $this->domit_rss_items;

		}

	} //_init



	/**

	* Returns the title of the channel

	* @return string The title of the channel, or an empty string

	*/

	function getTitle() {

		return $this->getElementText(DOMIT_RSS_ELEMENT_TITLE);

	} //getTitle



	/**

	* Returns the url of the channel

	* @return string The url of the channel, or an empty string

	*/

	function getLink() {

		return $this->getElementText(DOMIT_RSS_ELEMENT_LINK);

	} //getLink



	/**

	* Returns a description of the channel

	* @return string A description of the channel, or an empty string

	*/

	function getDescription() {

		return $this->getElementText(DOMIT_RSS_ELEMENT_DESCRIPTION);

	} //getDescription



	/**

	* Returns the number of items in the channel

	* @return int The number of items in the channel

	*/

	function getItemCount() {

		return count($this->domit_rss_items);

	} //getItemCount



	/**

	* Returns a reference to the item at the specified index

	* @param int The index of the requested item

	* @return Object A reference to the item at the specified index

	*/

	function &getItem($index) {

		return $this->domit_rss_items[$index];

	} //getItem

} //xml_domit_rss_channel_lite



/**

* Represents an RSS item

*

* @package domit-rss

* @subpackage domit-rss-lite

* @author John Heinstein <johnkarl@nbnet.nb.ca>

*/

class xml_domit_rss_item_lite extends xml_domit_rss_elementindexer {

	/**

	* Constructor

	* @param Object A DOM node containing item data

	*/

	function xml_domit_rss_item_lite(&$item) {

		$this->node =& $item;

		$this->_init();

	} //xml_domit_rss_item_lite



	/**

	* Performs initialization of the item element

	*/

	function _init(){

		$total = $this->node->childCount;



		for($i = 0; $i < $total; $i++) {

			$currNode =& $this->node->childNodes[$i];

			$tagName = strtolower($currNode->nodeName);



			switch ($tagName) {

				case DOMIT_RSS_ELEMENT_TITLE:

				case DOMIT_RSS_ELEMENT_LINK:

				case DOMIT_RSS_ELEMENT_DESCRIPTION:

					$this->DOMIT_RSS_indexer[$tagName] = new xml_domit_rss_simpleelement($currNode);

					break;

			}

		}

	} //init



	/**

	* Returns the title of the item

	* @return string The title of the item, or an empty string

	*/

	function getTitle() {

		return $this->getElementText(DOMIT_RSS_ELEMENT_TITLE);

	} //getTitle



	/**

	* Returns the url of the item

	* @return string The url of the item, or an empty string

	*/

	function getLink() {

		return $this->getElementText(DOMIT_RSS_ELEMENT_LINK);

	} //getLink



	/**

	* Returns a description of the item

	* @return string A description of the item, or an empty string

	*/

	function getDescription() {

		return $this->getElementText(DOMIT_RSS_ELEMENT_DESCRIPTION);

	} //getDescription

} //xml_domit_rss_item_lite



?>