      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: ?>