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527 lines
20 KiB
PHP
527 lines
20 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
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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 18266 2009-09-18 18:32:30Z padraic $
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*/
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/**
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* @see Zend_Feed_Abstract
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*/
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require_once 'Zend/Feed/Abstract.php';
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/**
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* @see Zend_Feed_Entry_Rss
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*/
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require_once 'Zend/Feed/Entry/Rss.php';
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/**
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* RSS channel class
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*
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* The Zend_Feed_Rss class is a concrete subclass of
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* Zend_Feed_Abstract meant for representing RSS channels. It does not
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* add any methods to its parent, just provides a classname to check
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* against with the instanceof operator, and expects to be handling
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* RSS-formatted data instead of Atom.
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*
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* @category Zend
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* @package Zend_Feed
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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_Rss extends Zend_Feed_Abstract
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{
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/**
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* The classname for individual channel elements.
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*
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* @var string
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*/
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protected $_entryClassName = 'Zend_Feed_Entry_Rss';
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/**
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* The element name for individual channel elements (RSS <item>s).
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*
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* @var string
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*/
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protected $_entryElementName = 'item';
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/**
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* The default namespace for RSS channels.
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*
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* @var string
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*/
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protected $_defaultNamespace = 'rss';
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/**
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* Override Zend_Feed_Abstract to set up the $_element and $_entries aliases.
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*
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* @return void
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* @throws Zend_Feed_Exception
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*/
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public function __wakeup()
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{
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parent::__wakeup();
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// Find the base channel element and create an alias to it.
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$rdfTags = $this->_element->getElementsByTagNameNS('http://www.w3.org/1999/02/22-rdf-syntax-ns#', 'RDF');
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if ($rdfTags->length != 0) {
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$this->_element = $rdfTags->item(0);
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} else {
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$this->_element = $this->_element->getElementsByTagName('channel')->item(0);
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}
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if (!$this->_element) {
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/**
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* @see Zend_Feed_Exception
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*/
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require_once 'Zend/Feed/Exception.php';
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throw new Zend_Feed_Exception('No root <channel> element found, cannot parse channel.');
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}
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// Find the entries and save a pointer to them for speed and
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// simplicity.
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$this->_buildEntryCache();
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}
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/**
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* Make accessing some individual elements of the channel easier.
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*
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* Special accessors 'item' and 'items' are provided so that if
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* you wish to iterate over an RSS channel's items, you can do so
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* using foreach ($channel->items as $item) or foreach
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* ($channel->item as $item).
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*
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* @param string $var The property to access.
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* @return mixed
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*/
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public function __get($var)
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{
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switch ($var) {
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case 'item':
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// fall through to the next case
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case 'items':
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return $this;
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default:
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return parent::__get($var);
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}
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}
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/**
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* Generate the header of the feed when working in write mode
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*
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* @param array $array the data to use
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* @return DOMElement root node
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*/
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protected function _mapFeedHeaders($array)
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{
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$channel = $this->_element->createElement('channel');
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$title = $this->_element->createElement('title');
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$title->appendChild($this->_element->createCDATASection($array->title));
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$channel->appendChild($title);
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$link = $this->_element->createElement('link', $array->link);
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$channel->appendChild($link);
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$desc = isset($array->description) ? $array->description : '';
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$description = $this->_element->createElement('description');
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$description->appendChild($this->_element->createCDATASection($desc));
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$channel->appendChild($description);
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$pubdate = isset($array->lastUpdate) ? $array->lastUpdate : time();
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$pubdate = $this->_element->createElement('pubDate', date(DATE_RSS, $pubdate));
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$channel->appendChild($pubdate);
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if (isset($array->published)) {
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$lastBuildDate = $this->_element->createElement('lastBuildDate', date(DATE_RSS, $array->published));
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$channel->appendChild($lastBuildDate);
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}
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$editor = '';
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if (!empty($array->email)) {
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$editor .= $array->email;
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}
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if (!empty($array->author)) {
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$editor .= ' (' . $array->author . ')';
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}
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if (!empty($editor)) {
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$author = $this->_element->createElement('managingEditor', ltrim($editor));
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$channel->appendChild($author);
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}
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if (isset($array->webmaster)) {
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$channel->appendChild($this->_element->createElement('webMaster', $array->webmaster));
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}
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if (!empty($array->copyright)) {
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$copyright = $this->_element->createElement('copyright', $array->copyright);
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$channel->appendChild($copyright);
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}
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if (isset($array->category)) {
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$category = $this->_element->createElement('category', $array->category);
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$channel->appendChild($category);
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}
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if (!empty($array->image)) {
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$image = $this->_element->createElement('image');
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$url = $this->_element->createElement('url', $array->image);
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$image->appendChild($url);
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$imagetitle = $this->_element->createElement('title');
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$imagetitle->appendChild($this->_element->createCDATASection($array->title));
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$image->appendChild($imagetitle);
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$imagelink = $this->_element->createElement('link', $array->link);
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$image->appendChild($imagelink);
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$channel->appendChild($image);
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}
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$generator = !empty($array->generator) ? $array->generator : 'Zend_Feed';
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$generator = $this->_element->createElement('generator', $generator);
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$channel->appendChild($generator);
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if (!empty($array->language)) {
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$language = $this->_element->createElement('language', $array->language);
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$channel->appendChild($language);
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}
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$doc = $this->_element->createElement('docs', 'http://blogs.law.harvard.edu/tech/rss');
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$channel->appendChild($doc);
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if (isset($array->cloud)) {
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$cloud = $this->_element->createElement('cloud');
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$cloud->setAttribute('domain', $array->cloud['uri']->getHost());
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$cloud->setAttribute('port', $array->cloud['uri']->getPort());
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$cloud->setAttribute('path', $array->cloud['uri']->getPath());
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$cloud->setAttribute('registerProcedure', $array->cloud['procedure']);
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$cloud->setAttribute('protocol', $array->cloud['protocol']);
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$channel->appendChild($cloud);
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}
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if (isset($array->ttl)) {
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$ttl = $this->_element->createElement('ttl', $array->ttl);
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$channel->appendChild($ttl);
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}
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if (isset($array->rating)) {
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$rating = $this->_element->createElement('rating', $array->rating);
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$channel->appendChild($rating);
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}
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if (isset($array->textInput)) {
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$textinput = $this->_element->createElement('textInput');
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$textinput->appendChild($this->_element->createElement('title', $array->textInput['title']));
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$textinput->appendChild($this->_element->createElement('description', $array->textInput['description']));
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$textinput->appendChild($this->_element->createElement('name', $array->textInput['name']));
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$textinput->appendChild($this->_element->createElement('link', $array->textInput['link']));
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$channel->appendChild($textinput);
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}
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if (isset($array->skipHours)) {
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$skipHours = $this->_element->createElement('skipHours');
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foreach ($array->skipHours as $hour) {
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$skipHours->appendChild($this->_element->createElement('hour', $hour));
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}
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$channel->appendChild($skipHours);
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}
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if (isset($array->skipDays)) {
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$skipDays = $this->_element->createElement('skipDays');
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foreach ($array->skipDays as $day) {
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$skipDays->appendChild($this->_element->createElement('day', $day));
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}
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$channel->appendChild($skipDays);
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}
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if (isset($array->itunes)) {
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$this->_buildiTunes($channel, $array);
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}
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return $channel;
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}
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/**
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* Adds the iTunes extensions to a root node
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*
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* @param DOMElement $root
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* @param array $array
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* @return void
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*/
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private function _buildiTunes(DOMElement $root, $array)
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{
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/* author node */
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$author = '';
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if (isset($array->itunes->author)) {
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$author = $array->itunes->author;
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} elseif (isset($array->author)) {
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$author = $array->author;
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}
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if (!empty($author)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:author', $author);
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$root->appendChild($node);
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}
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/* owner node */
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$author = '';
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$email = '';
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if (isset($array->itunes->owner)) {
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if (isset($array->itunes->owner['name'])) {
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$author = $array->itunes->owner['name'];
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}
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if (isset($array->itunes->owner['email'])) {
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$email = $array->itunes->owner['email'];
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}
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}
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if (empty($author) && isset($array->author)) {
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$author = $array->author;
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}
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if (empty($email) && isset($array->email)) {
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$email = $array->email;
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}
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if (!empty($author) || !empty($email)) {
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$owner = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:owner');
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if (!empty($author)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:name', $author);
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$owner->appendChild($node);
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}
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if (!empty($email)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:email', $email);
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$owner->appendChild($node);
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}
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$root->appendChild($owner);
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}
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$image = '';
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if (isset($array->itunes->image)) {
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$image = $array->itunes->image;
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} elseif (isset($array->image)) {
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$image = $array->image;
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}
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if (!empty($image)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:image');
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$node->setAttribute('href', $image);
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$root->appendChild($node);
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}
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$subtitle = '';
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if (isset($array->itunes->subtitle)) {
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$subtitle = $array->itunes->subtitle;
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} elseif (isset($array->description)) {
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$subtitle = $array->description;
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}
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if (!empty($subtitle)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:subtitle', $subtitle);
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$root->appendChild($node);
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}
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$summary = '';
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if (isset($array->itunes->summary)) {
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$summary = $array->itunes->summary;
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} elseif (isset($array->description)) {
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$summary = $array->description;
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}
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if (!empty($summary)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:summary', $summary);
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$root->appendChild($node);
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}
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if (isset($array->itunes->block)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:block', $array->itunes->block);
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$root->appendChild($node);
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}
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if (isset($array->itunes->explicit)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:explicit', $array->itunes->explicit);
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$root->appendChild($node);
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}
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if (isset($array->itunes->keywords)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:keywords', $array->itunes->keywords);
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$root->appendChild($node);
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}
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if (isset($array->itunes->new_feed_url)) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:new-feed-url', $array->itunes->new_feed_url);
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$root->appendChild($node);
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}
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if (isset($array->itunes->category)) {
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foreach ($array->itunes->category as $i => $category) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:category');
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$node->setAttribute('text', $category['main']);
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$root->appendChild($node);
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$add_end_category = false;
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if (!empty($category['sub'])) {
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$add_end_category = true;
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:category');
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$node->setAttribute('text', $category['sub']);
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$root->appendChild($node);
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}
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if ($i > 0 || $add_end_category) {
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$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:category');
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$root->appendChild($node);
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}
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}
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}
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}
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/**
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* Generate the entries of the feed when working in write mode
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*
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* The following nodes are constructed for each feed entry
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* <item>
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* <title>entry title</title>
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* <link>url to feed entry</link>
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* <guid>url to feed entry</guid>
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* <description>short text</description>
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* <content:encoded>long version, can contain html</content:encoded>
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* </item>
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*
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* @param DOMElement $root the root node to use
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* @param array $array the data to use
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* @return void
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*/
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protected function _mapFeedEntries(DOMElement $root, $array)
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{
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Zend_Feed::registerNamespace('content', 'http://purl.org/rss/1.0/modules/content/');
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foreach ($array as $dataentry) {
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$item = $this->_element->createElement('item');
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$title = $this->_element->createElement('title');
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$title->appendChild($this->_element->createCDATASection($dataentry->title));
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$item->appendChild($title);
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if (isset($dataentry->author)) {
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$author = $this->_element->createElement('author', $dataentry->author);
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$item->appendChild($author);
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}
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$link = $this->_element->createElement('link', $dataentry->link);
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$item->appendChild($link);
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if (isset($dataentry->guid)) {
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$guid = $this->_element->createElement('guid', $dataentry->guid);
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$item->appendChild($guid);
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}
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$description = $this->_element->createElement('description');
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$description->appendChild($this->_element->createCDATASection($dataentry->description));
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$item->appendChild($description);
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if (isset($dataentry->content)) {
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$content = $this->_element->createElement('content:encoded');
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$content->appendChild($this->_element->createCDATASection($dataentry->content));
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$item->appendChild($content);
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}
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$pubdate = isset($dataentry->lastUpdate) ? $dataentry->lastUpdate : time();
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$pubdate = $this->_element->createElement('pubDate', date(DATE_RSS, $pubdate));
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$item->appendChild($pubdate);
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if (isset($dataentry->category)) {
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foreach ($dataentry->category as $category) {
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$node = $this->_element->createElement('category', $category['term']);
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if (isset($category['scheme'])) {
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$node->setAttribute('domain', $category['scheme']);
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}
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$item->appendChild($node);
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}
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}
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if (isset($dataentry->source)) {
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$source = $this->_element->createElement('source', $dataentry->source['title']);
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$source->setAttribute('url', $dataentry->source['url']);
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$item->appendChild($source);
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}
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if (isset($dataentry->comments)) {
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$comments = $this->_element->createElement('comments', $dataentry->comments);
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$item->appendChild($comments);
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}
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if (isset($dataentry->commentRss)) {
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$comments = $this->_element->createElementNS('http://wellformedweb.org/CommentAPI/',
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'wfw:commentRss',
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$dataentry->commentRss);
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$item->appendChild($comments);
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}
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if (isset($dataentry->enclosure)) {
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foreach ($dataentry->enclosure as $enclosure) {
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$node = $this->_element->createElement('enclosure');
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$node->setAttribute('url', $enclosure['url']);
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if (isset($enclosure['type'])) {
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$node->setAttribute('type', $enclosure['type']);
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}
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if (isset($enclosure['length'])) {
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$node->setAttribute('length', $enclosure['length']);
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}
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$item->appendChild($node);
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}
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}
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$root->appendChild($item);
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}
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}
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/**
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* Override Zend_Feed_Element to include <rss> root node
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*
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* @return string
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*/
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public function saveXml()
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{
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// Return a complete document including XML prologue.
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$doc = new DOMDocument($this->_element->ownerDocument->version,
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$this->_element->ownerDocument->actualEncoding);
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$root = $doc->createElement('rss');
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// Use rss version 2.0
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$root->setAttribute('version', '2.0');
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// Content namespace
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$root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:content', 'http://purl.org/rss/1.0/modules/content/');
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$root->appendChild($doc->importNode($this->_element, true));
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// Append root node
|
|
$doc->appendChild($root);
|
|
|
|
// Format output
|
|
$doc->formatOutput = true;
|
|
|
|
return $doc->saveXML();
|
|
}
|
|
|
|
/**
|
|
* Send feed to a http client with the correct header
|
|
*
|
|
* @return void
|
|
* @throws Zend_Feed_Exception if headers have already been sent
|
|
*/
|
|
public function send()
|
|
{
|
|
if (headers_sent()) {
|
|
/**
|
|
* @see Zend_Feed_Exception
|
|
*/
|
|
require_once 'Zend/Feed/Exception.php';
|
|
throw new Zend_Feed_Exception('Cannot send RSS because headers have already been sent.');
|
|
}
|
|
|
|
header('Content-Type: application/rss+xml; charset=' . $this->_element->ownerDocument->actualEncoding);
|
|
|
|
echo $this->saveXml();
|
|
}
|
|
|
|
}
|