612 lines
16 KiB
PHP
612 lines
16 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Feed_Reader
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Rss.php 16966 2009-07-22 15:22:18Z padraic $
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*/
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/**
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* @see Zend_Feed_Reader
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*/
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require_once 'Zend/Feed/Reader.php';
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/**
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* @see Zend_Feed_Reader_EntryInterface
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*/
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require_once 'Zend/Feed/Reader/EntryInterface.php';
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/**
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* @see Zend_Feed_Reader_EntryAbstract
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*/
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require_once 'Zend/Feed/Reader/EntryAbstract.php';
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/**
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* @see Zend_Feed_Reader_Extension_DublinCore_Entry
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*/
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require_once 'Zend/Feed/Reader/Extension/DublinCore/Entry.php';
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/**
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* @see Zend_Feed_Reader_Extension_Content_Entry
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*/
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require_once 'Zend/Feed/Reader/Extension/Content/Entry.php';
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/**
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* @see Zend_Feed_Reader_Extension_Atom_Entry
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*/
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require_once 'Zend/Feed/Reader/Extension/Atom/Entry.php';
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/**
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* @see Zend_Feed_Reader_Extension_WellformedWeb_Entry
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*/
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require_once 'Zend/Feed/Reader/Extension/WellFormedWeb/Entry.php';
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/**
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* @see Zend_Feed_Reader_Extension_Slash_Entry
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*/
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require_once 'Zend/Feed/Reader/Extension/Slash/Entry.php';
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/**
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* @see Zend_Feed_Reader_Extension_Thread_Entry
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*/
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require_once 'Zend/Feed/Reader/Extension/Thread/Entry.php';
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/**
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* @see Zend_Date
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*/
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require_once 'Zend/Date.php';
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/**
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* @category Zend
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* @package Zend_Feed_Reader
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Feed_Reader_Entry_Rss extends Zend_Feed_Reader_EntryAbstract implements Zend_Feed_Reader_EntryInterface
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{
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/**
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* XPath query for RDF
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*
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* @var string
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*/
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protected $_xpathQueryRdf = '';
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/**
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* XPath query for RSS
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*
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* @var string
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*/
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protected $_xpathQueryRss = '';
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/**
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* Constructor
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*
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* @param Zend_Feed_Entry_Abstract $entry
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* @param string $entryKey
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* @param string $type
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* @return void
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*/
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public function __construct(DOMElement $entry, $entryKey, $type = null)
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{
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parent::__construct($entry, $entryKey, $type);
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$this->_xpathQueryRss = '//item[' . ($this->_entryKey+1) . ']';
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$this->_xpathQueryRdf = '//rss:item[' . ($this->_entryKey+1) . ']';
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$pluginLoader = Zend_Feed_Reader::getPluginLoader();
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$dublinCoreClass = $pluginLoader->getClassName('DublinCore_Entry');
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$this->_extensions['DublinCore_Entry'] = new $dublinCoreClass($entry, $entryKey, $type);
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$contentClass = $pluginLoader->getClassName('Content_Entry');
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$this->_extensions['Content_Entry'] = new $contentClass($entry, $entryKey, $type);
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$atomClass = $pluginLoader->getClassName('Atom_Entry');
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$this->_extensions['Atom_Entry'] = new $atomClass($entry, $entryKey, $type);
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$wfwClass = $pluginLoader->getClassName('WellFormedWeb_Entry');
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$this->_extensions['WellFormedWeb_Entry'] = new $wfwClass($entry, $entryKey, $type);
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$slashClass = $pluginLoader->getClassName('Slash_Entry');
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$this->_extensions['Slash_Entry'] = new $slashClass($entry, $entryKey, $type);
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$threadClass = $pluginLoader->getClassName('Thread_Entry');
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$this->_extensions['Thread_Entry'] = new $threadClass($entry, $entryKey, $type);
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}
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/**
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* Get an author entry
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*
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* @param DOMElement $element
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* @return string
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*/
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public function getAuthor($index = 0)
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{
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$authors = $this->getAuthors();
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if (isset($authors[$index])) {
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return $authors[$index];
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}
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return null;
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}
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/**
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* Get an array with feed authors
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*
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* @return array
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*/
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public function getAuthors()
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{
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if (array_key_exists('authors', $this->_data)) {
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return $this->_data['authors'];
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}
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$authors = array();
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// @todo: create a list from all potential sources rather than from alternatives
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if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
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$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
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$list = $this->_xpath->evaluate($this->_xpathQueryRss.'//author');
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} else {
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$list = $this->_xpath->evaluate($this->_xpathQueryRdf.'//rss:author');
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}
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if (!$list->length) {
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if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 && $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
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$list = $this->_xpath->query('//author');
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} else {
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$list = $this->_xpath->query('//rss:author');
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}
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}
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if ($list->length) {
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foreach ($list as $author) {
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if ($this->getType() == Zend_Feed_Reader::TYPE_RSS_20
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&& preg_match("/\(([^\)]+)\)/", $author->nodeValue, $matches, PREG_OFFSET_CAPTURE)
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) {
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// source name from RSS 2.0 <author>
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// format "joe@example.com (Joe Bloggs)"
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$authors[] = $matches[1][0];
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} else {
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$authors[] = $author->nodeValue;
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}
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}
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$authors = array_unique($authors);
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}
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if (empty($authors)) {
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$authors = $this->getExtension('DublinCore')->getAuthors();
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}
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if (empty($authors)) {
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$authors = $this->getExtension('Atom')->getAuthors();
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}
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$this->_data['authors'] = $authors;
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return $this->_data['authors'];
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}
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/**
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* Get the entry content
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*
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* @return string
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*/
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public function getContent()
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{
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if (array_key_exists('content', $this->_data)) {
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return $this->_data['content'];
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}
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$content = $this->getExtension('Content')->getContent();
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if (!$content) {
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$content = $this->getDescription();
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}
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if (empty($content)) {
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$content = $this->getExtension('Atom')->getContent();
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}
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$this->_data['content'] = $content;
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return $this->_data['content'];
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}
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/**
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* Get the entry's date of creation
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*
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* @return string
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*/
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public function getDateCreated()
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{
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return $this->getDateModified();
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}
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/**
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* Get the entry's date of modification
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*
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* @return string
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*/
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public function getDateModified()
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{
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if (array_key_exists('datemodified', $this->_data)) {
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return $this->_data['datemodified'];
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}
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$dateModified = null;
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$date = null;
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if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10
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&& $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090
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) {
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$dateModified = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/pubDate)');
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if ($dateModified) {
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$date = new Zend_Date();
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try {
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$date->set($dateModified, Zend_Date::RFC_822);
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} catch (Zend_Date_Exception $e) {
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try {
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$date->set($dateModified, Zend_Date::RFC_2822);
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} catch (Zend_Date_Exception $e) {
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try {
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$date->set($dateModified, Zend_Date::DATES);
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} catch (Zend_Date_Exception $e) {
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require_once 'Zend/Feed/Exception.php';
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throw new Zend_Feed_Exception(
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'Could not load date due to unrecognised format (should follow RFC 822 or 2822): '
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. $e->getMessage()
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);
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}
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}
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}
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}
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}
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if (!$date) {
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$date = $this->getExtension('DublinCore')->getDate();
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}
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if (!$date) {
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$date = $this->getExtension('Atom')->getDateModified();
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}
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if (!$date) {
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$date = null;
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}
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$this->_data['datemodified'] = $date;
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return $this->_data['datemodified'];
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}
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/**
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* Get the entry description
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*
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* @return string
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*/
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public function getDescription()
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{
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if (array_key_exists('description', $this->_data)) {
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return $this->_data['description'];
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}
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$description = null;
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if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10
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&& $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090
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) {
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$description = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/description)');
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} else {
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$description = $this->_xpath->evaluate('string('.$this->_xpathQueryRdf.'/rss:description)');
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}
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if (!$description) {
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$description = $this->getExtension('DublinCore')->getDescription();
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}
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if (empty($description)) {
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$description = $this->getExtension('Atom')->getDescription();
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}
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if (!$description) {
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$description = null;
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} else {
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$description = html_entity_decode($description, ENT_QUOTES, $this->getEncoding());
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}
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$this->_data['description'] = $description;
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return $this->_data['description'];
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}
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/**
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* Get the entry enclosure
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* TODO: Is this supported by RSS? Could delegate to Atom Extension if not.
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* @return string
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*/
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public function getEnclosure()
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{
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if (array_key_exists('enclosure', $this->_data)) {
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return $this->_data['enclosure'];
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}
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$enclosure = null;
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if ($this->getType() == Zend_Feed_Reader::TYPE_RSS_20) {
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$nodeList = $this->_xpath->query($this->_xpathQueryRss . '/enclosure');
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if ($nodeList->length > 0) {
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$enclosure = new stdClass();
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$enclosure->url = $nodeList->item(0)->getAttribute('url');
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$enclosure->length = $nodeList->item(0)->getAttribute('length');
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$enclosure->type = $nodeList->item(0)->getAttribute('type');
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}
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}
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$this->_data['enclosure'] = $enclosure;
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return $this->_data['enclosure'];
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}
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/**
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* Get the entry ID
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*
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* @return string
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*/
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public function getId()
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{
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if (array_key_exists('id', $this->_data)) {
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return $this->_data['id'];
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}
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$id = null;
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if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10
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&& $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090
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) {
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$id = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/guid)');
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}
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if (!$id) {
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$id = $this->getExtension('DublinCore')->getId();
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}
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if (empty($id)) {
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$id = $this->getExtension('Atom')->getId();
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}
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if (!$id) {
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if ($this->getPermalink()) {
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$id = $this->getPermalink();
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} elseif ($this->getTitle()) {
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$id = $this->getTitle();
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} else {
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$id = null;
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}
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}
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$this->_data['id'] = $id;
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return $this->_data['id'];
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}
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/**
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* Get a specific link
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*
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* @param int $index
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* @return string
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*/
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public function getLink($index = 0)
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{
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if (!array_key_exists('links', $this->_data)) {
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$this->getLinks();
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}
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if (isset($this->_data['links'][$index])) {
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return $this->_data['links'][$index];
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}
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return null;
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}
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/**
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* Get all links
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*
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* @return array
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*/
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public function getLinks()
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{
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if (array_key_exists('links', $this->_data)) {
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return $this->_data['links'];
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}
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$links = array();
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if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
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$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
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$list = $this->_xpath->query($this->_xpathQueryRss.'//link');
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} else {
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$list = $this->_xpath->query($this->_xpathQueryRdf.'//rss:link');
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}
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if (!$list->length) {
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$links = $this->getExtension('Atom')->getLinks();
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} else {
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foreach ($list as $link) {
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$links[] = $link->nodeValue;
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}
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}
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$this->_data['links'] = $links;
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return $this->_data['links'];
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}
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/**
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* Get a permalink to the entry
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*
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* @return string
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*/
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public function getPermalink()
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{
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return $this->getLink(0);
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}
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/**
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* Get the entry title
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*
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* @return string
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*/
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public function getTitle()
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{
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if (array_key_exists('title', $this->_data)) {
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return $this->_data['title'];
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}
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$title = null;
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if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10
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&& $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090
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) {
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$title = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/title)');
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} else {
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$title = $this->_xpath->evaluate('string('.$this->_xpathQueryRdf.'/rss:title)');
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}
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if (!$title) {
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$title = $this->getExtension('DublinCore')->getTitle();
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}
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if (!$title) {
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$title = $this->getExtension('Atom')->getTitle();
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}
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if (!$title) {
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$title = null;
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}
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$this->_data['title'] = $title;
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return $this->_data['title'];
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}
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/**
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* Get the number of comments/replies for current entry
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*
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* @return string|null
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*/
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public function getCommentCount()
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{
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if (array_key_exists('commentcount', $this->_data)) {
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return $this->_data['commentcount'];
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}
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$commentcount = $this->getExtension('Slash')->getCommentCount();
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if (!$commentcount) {
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$commentcount = $this->getExtension('Thread')->getCommentCount();
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}
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if (!$commentcount) {
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$commentcount = $this->getExtension('Atom')->getCommentCount();
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}
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if (!$commentcount) {
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$commentcount = null;
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}
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$this->_data['commentcount'] = $commentcount;
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return $this->_data['commentcount'];
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}
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/**
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* Returns a URI pointing to the HTML page where comments can be made on this entry
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*
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* @return string
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*/
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public function getCommentLink()
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{
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if (array_key_exists('commentlink', $this->_data)) {
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return $this->_data['commentlink'];
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}
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$commentlink = null;
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if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10
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&& $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090
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) {
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$commentlink = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/comments)');
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}
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if (!$commentlink) {
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$commentlink = $this->getExtension('Atom')->getCommentLink();
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}
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if (!$commentlink) {
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$commentlink = null;
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}
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$this->_data['commentlink'] = $commentlink;
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return $this->_data['commentlink'];
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}
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/**
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* Returns a URI pointing to a feed of all comments for this entry
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*
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* @return string
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*/
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public function getCommentFeedLink()
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{
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if (array_key_exists('commentfeedlink', $this->_data)) {
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return $this->_data['commentfeedlink'];
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}
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|
|
|
$commentfeedlink = $this->getExtension('WellFormedWeb')->getCommentFeedLink();
|
|
|
|
if (!$commentfeedlink) {
|
|
$commentfeedlink = $this->getExtension('Atom')->getCommentFeedLink('rss');
|
|
}
|
|
|
|
if (!$commentfeedlink) {
|
|
$commentfeedlink = $this->getExtension('Atom')->getCommentFeedLink('rdf');
|
|
}
|
|
|
|
if (!$commentfeedlink) {
|
|
$commentfeedlink = null;
|
|
}
|
|
|
|
$this->_data['commentfeedlink'] = $commentfeedlink;
|
|
|
|
return $this->_data['commentfeedlink'];
|
|
}
|
|
|
|
/**
|
|
* Set the XPath query (incl. on all Extensions)
|
|
*
|
|
* @param DOMXPath $xpath
|
|
*/
|
|
public function setXpath(DOMXPath $xpath)
|
|
{
|
|
parent::setXpath($xpath);
|
|
foreach ($this->_extensions as $extension) {
|
|
$extension->setXpath($this->_xpath);
|
|
}
|
|
}
|
|
}
|