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Name File: RSS09.php
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<?php /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ /** * RSS0.9 class for XML_Feed_Parser * * PHP versions 5 * * LICENSE: This source file is subject to version 3.0 of the PHP license * that is available through the world-wide-web at the following URI: * http://www.php.net/license/3_0.txt. If you did not receive a copy of * the PHP License and are unable to obtain it through the web, please * send a note to license@php.net so we can mail you a copy immediately. * * @category XML * @package XML_Feed_Parser * @author James Stewart <james@jystewart.net> * @copyright 2005 James Stewart <james@jystewart.net> * @license http://www.gnu.org/copyleft/lesser.html GNU LGPL 2.1 * @version CVS: $Id: RSS09.php 6844 2011-06-03 14:46:51Z dMetzger $ * @link http://pear.php.net/package/XML_Feed_Parser/ */ /** * This class handles RSS0.9 feeds. * * @author James Stewart <james@jystewart.net> * @version Release: @package_version@ * @package XML_Feed_Parser * @todo Find a Relax NG URI we can use */ class XML_Feed_Parser_RSS09 extends XML_Feed_Parser_Type { /** * The URI of the RelaxNG schema used to (optionally) validate the feed * @var string */ protected $relax = ''; /** * We're likely to use XPath, so let's keep it global * @var DOMXPath */ protected $xpath; /** * The feed type we are parsing * @var string */ public $version = 'RSS 0.9'; /** * The class used to represent individual items * @var string */ protected $itemClass = 'XML_Feed_Parser_RSS09Element'; /** * The element containing entries * @var string */ protected $itemElement = 'item'; /** * Here we map those elements we're not going to handle individually * to the constructs they are. The optional second parameter in the array * tells the parser whether to 'fall back' (not apt. at the feed level) or * fail if the element is missing. If the parameter is not set, the function * will simply return false and leave it to the client to decide what to do. * @var array */ protected $map = array( 'title' => array('Text'), 'link' => array('Text'), 'description' => array('Text'), 'image' => array('Image'), 'textinput' => array('TextInput')); /** * Here we map some elements to their atom equivalents. This is going to be * quite tricky to pull off effectively (and some users' methods may vary) * but is worth trying. The key is the atom version, the value is RSS2. * @var array */ protected $compatMap = array( 'title' => array('title'), 'link' => array('link'), 'subtitle' => array('description')); /** * We will be working with multiple namespaces and it is useful to * keep them together * @var array */ protected $namespaces = array( 'rdf' => 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'); /** * Our constructor does nothing more than its parent. * * @todo RelaxNG validation * @param DOMDocument $xml A DOM object representing the feed * @param bool (optional) $string Whether or not to validate this feed */ function __construct(DOMDocument $model, $strict = false) { $this->model = $model; $this->xpath = new DOMXPath($model); foreach ($this->namespaces as $key => $value) { $this->xpath->registerNamespace($key, $value); } $this->numberEntries = $this->count('item'); } /** * Included for compatibility -- will not work with RSS 0.9 * * This is not something that will work with RSS0.9 as it does not have * clear restrictions on the global uniqueness of IDs. * * @param string $id any valid ID. * @return false */ function getEntryById($id) { return false; } /** * Get details of the image associated with the feed. * * @return array|false an array simply containing the child elements */ protected function getImage() { $images = $this->model->getElementsByTagName('image'); if ($images->length > 0) { $image = $images->item(0); $details = array(); if ($image->hasChildNodes()) { $details = array( 'title' => $image->getElementsByTagName('title')->item(0)->value, 'link' => $image->getElementsByTagName('link')->item(0)->value, 'url' => $image->getElementsByTagName('url')->item(0)->value); } else { $details = array('title' => false, 'link' => false, 'url' => $image->attributes->getNamedItem('resource')->nodeValue); } $details = array_merge($details, array('description' => false, 'height' => false, 'width' => false)); if (! empty($details)) { return $details; } } return false; } /** * The textinput element is little used, but in the interests of * completeness we will support it. * * @return array|false */ protected function getTextInput() { $inputs = $this->model->getElementsByTagName('textinput'); if ($inputs->length > 0) { $input = $inputs->item(0); $results = array(); $results['title'] = isset( $input->getElementsByTagName('title')->item(0)->value) ? $input->getElementsByTagName('title')->item(0)->value : null; $results['description'] = isset( $input->getElementsByTagName('description')->item(0)->value) ? $input->getElementsByTagName('description')->item(0)->value : null; $results['name'] = isset( $input->getElementsByTagName('name')->item(0)->value) ? $input->getElementsByTagName('name')->item(0)->value : null; $results['link'] = isset( $input->getElementsByTagName('link')->item(0)->value) ? $input->getElementsByTagName('link')->item(0)->value : null; if (empty($results['link']) && $input->attributes->getNamedItem('resource')) { $results['link'] = $input->attributes->getNamedItem('resource')->nodeValue; } if (! empty($results)) { return $results; } } return false; } /** * Get details of a link from the feed. * * In RSS1 a link is a text element but in order to ensure that we resolve * URLs properly we have a special function for them. * * @return string */ function getLink($offset = 0, $attribute = 'href', $params = false) { $links = $this->model->getElementsByTagName('link'); if ($links->length <= $offset) { return false; } $link = $links->item($offset); return $this->addBase($link->nodeValue, $link); } /** * Not implemented - no available validation. */ public function relaxNGValidate() { return true; } } ?>
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