1: <?php
  2: 
  3: /**
  4:  * RSS 1.0 class for synication
  5:  * 
  6:  * @package alpha::util::feeds
  7:  * @since 1.0
  8:  * @author John Collins <dev@alphaframework.org>
  9:  * @version $Id: RSS.inc 1496 2012-02-12 20:32:21Z alphadev $
 10:  * @license http://www.opensource.org/licenses/bsd-license.php The BSD License
 11:  * @copyright Copyright (c) 2012, John Collins (founder of Alpha Framework).  
 12:  * All rights reserved.
 13:  * 
 14:  * <pre>
 15:  * Redistribution and use in source and binary forms, with or 
 16:  * without modification, are permitted provided that the 
 17:  * following conditions are met:
 18:  * 
 19:  * * Redistributions of source code must retain the above 
 20:  *   copyright notice, this list of conditions and the 
 21:  *   following disclaimer.
 22:  * * Redistributions in binary form must reproduce the above 
 23:  *   copyright notice, this list of conditions and the 
 24:  *   following disclaimer in the documentation and/or other 
 25:  *   materials provided with the distribution.
 26:  * * Neither the name of the Alpha Framework nor the names 
 27:  *   of its contributors may be used to endorse or promote 
 28:  *   products derived from this software without specific 
 29:  *   prior written permission.
 30:  *   
 31:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
 32:  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
 33:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 34:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 35:  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
 36:  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 37:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
 38:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 39:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 40:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 41:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 42:  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 43:  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 44:  * </pre>
 45:  *  
 46:  */
 47: class RSS extends AlphaFeed {
 48:     /**
 49:      * The XML namespace
 50:      * 
 51:      * @var string
 52:      * @since 1.0
 53:      */
 54:     protected $nameSpace = 'http://purl.org/rss/1.0/';
 55:     
 56:     /**
 57:      * The RDF namespace
 58:      * 
 59:      * @var string
 60:      * @since 1.0
 61:      */
 62:     private $rdfns = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
 63:     
 64:     /**
 65:      * The actual root tag used in each feed type
 66:      * 
 67:      * @var string
 68:      * @since 1.0
 69:      */
 70:     protected $rootTag = '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://purl.org/rss/1.0/" />';
 71:     
 72:     /**
 73:      * Add a URL to feed item
 74:      * 
 75:      * @param $url
 76:      * @since 1.0
 77:      */
 78:     private function addToItems($url) {
 79:         if($this->items == null) {
 80:             $container = $this->createFeedElement('items');
 81:             $this->root->appendChild($container);
 82:             $this->items = $this->rssDoc->createElementNS($this->rdfns, 'Seq');
 83:             $container->appendChild($this->items);
 84:         }
 85:         
 86:         $item = $this->rssDoc->createElementNS($this->rdfns, 'li');
 87:         $this->items->appendChild($item);
 88:         $item->setAttribute('resource', $url);
 89:     }
 90:     
 91:     /**
 92:      * (non-PHPdoc)
 93:      * @see alpha/util/feeds/AlphaFeed::addItem()
 94:      */
 95:     protected function addItem($title, $link, $description = null, $pubDate = null, $id = null) {
 96:         parent::addItem($title, $link, $description, $pubDate, $id);
 97:         $this->addToItems($link);
 98:     }
 99:     
100:     /**
101:      * (non-PHPdoc)
102:      * @see alpha/util/feeds/AlphaFeed::createRSSNode()
103:      */
104:     protected function createRSSNode($type, $parent, $title, $url, $description, $pubDate = null) {
105:         $parent->setAttributeNS($this->rdfns, 'rdf:about', $url);
106:         parent::createRSSNode($type, $parent, $title, $url, $description, $pubDate);
107:     }   
108: }
109: 
110: ?>