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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Feed
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Rss.php 8064 2008-02-16 10:58:39Z thomas $
*/
/**
* @see Zend_Feed_Abstract
*/
require_once 'external/Zend/Feed/Abstract.php';
/**
* @see Zend_Feed_Entry_Rss
*/
require_once 'external/Zend/Feed/Entry/Rss.php';
/**
* RSS channel class
*
* The Zend_Feed_Rss class is a concrete subclass of
* Zend_Feed_Abstract meant for representing RSS channels. It does not
* add any methods to its parent, just provides a classname to check
* against with the instanceof operator, and expects to be handling
* RSS-formatted data instead of Atom.
*
* @category Zend
* @package Zend_Feed
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Feed_Rss extends Zend_Feed_Abstract {
/**
* The classname for individual channel elements.
*
* @var string
*/
protected $_entryClassName = 'Zend_Feed_Entry_Rss';
/**
* The element name for individual channel elements (RSS <item>s).
*
* @var string
*/
protected $_entryElementName = 'item';
/**
* The default namespace for RSS channels.
*
* @var string
*/
protected $_defaultNamespace = 'rss';
/**
* Override Zend_Feed_Abstract to set up the $_element and $_entries aliases.
*
* @return void
* @throws Zend_Feed_Exception
*/
public function __wakeup() {
parent::__wakeup();
// Find the base channel element and create an alias to it.
$rdf = $this->_element->getElementsByTagNameNS('http://www.w3.org/1999/02/22-rdf-syntax-ns#', 'RDF')->item(0);
if ($rdf) {
$this->_element = $rdf;
$channel = $this->_element->getElementsByTagName('channel')->item(0);
if ($channel->getElementsByTagName('title')->item(0))
$this->_element->appendChild($channel->getElementsByTagName('title')->item(0));
if ($channel->getElementsByTagName('link')->item(0))
$this->_element->appendChild($channel->getElementsByTagName('link')->item(0));
if ($channel->getElementsByTagName('description')->item(0))
$this->_element->appendChild($channel->getElementsByTagName('description')->item(0));
} else {
$this->_element = $this->_element->getElementsByTagName('channel')->item(0);
}
if (! $this->_element) {
/**
* @see Zend_Feed_Exception
*/
require_once 'external/Zend/Feed/Exception.php';
throw new Zend_Feed_Exception('No root <channel> element found, cannot parse channel.');
}
// Find the entries and save a pointer to them for speed and
// simplicity.
$this->_buildEntryCache();
}
/**
* Make accessing some individual elements of the channel easier.
*
* Special accessors 'item' and 'items' are provided so that if
* you wish to iterate over an RSS channel's items, you can do so
* using foreach ($channel->items as $item) or foreach
* ($channel->item as $item).
*
* @param string $var The property to access.
* @return mixed
*/
public function __get($var) {
switch ($var) {
case 'item':
// fall through to the next case
case 'items':
return $this;
default:
return parent::__get($var);
}
}
/**
* Generate the header of the feed when working in write mode
*
* @param array $array the data to use
* @return DOMElement root node
*/
protected function _mapFeedHeaders($array) {
$channel = $this->_element->createElement('channel');
$title = $this->_element->createElement('title');
$title->appendChild($this->_element->createCDATASection($array->title));
$channel->appendChild($title);
$link = $this->_element->createElement('link', $array->link);
$channel->appendChild($link);
$desc = isset($array->description) ? $array->description : '';
$description = $this->_element->createElement('description');
$description->appendChild($this->_element->createCDATASection($desc));
$channel->appendChild($description);
$pubdate = isset($array->lastUpdate) ? $array->lastUpdate : time();
$pubdate = $this->_element->createElement('pubDate', gmdate('r', $pubdate));
$channel->appendChild($pubdate);
if (isset($array->published)) {
$lastBuildDate = $this->_element->createElement('lastBuildDate', gmdate('r', $array->published));
}
$editor = '';
if (! empty($array->email)) {
$editor .= $array->email;
}
if (! empty($array->author)) {
$editor .= ' (' . $array->author . ')';
}
if (! empty($editor)) {
$author = $this->_element->createElement('managingEditor', ltrim($editor));
$channel->appendChild($author);
}
if (isset($array->webmaster)) {
$channel->appendChild($this->_element->createElement('webMaster', $array->webmaster));
}
if (! empty($array->copyright)) {
$copyright = $this->_element->createElement('copyright', $array->copyright);
$channel->appendChild($copyright);
}
if (! empty($array->image)) {
$image = $this->_element->createElement('image');
$url = $this->_element->createElement('url', $array->image);
$image->appendChild($url);
$imagetitle = $this->_element->createElement('title', $array->title);
$image->appendChild($imagetitle);
$imagelink = $this->_element->createElement('link', $array->link);
$image->appendChild($imagelink);
$channel->appendChild($image);
}
$generator = ! empty($array->generator) ? $array->generator : 'Zend_Feed';
$generator = $this->_element->createElement('generator', $generator);
$channel->appendChild($generator);
if (! empty($array->language)) {
$language = $this->_element->createElement('language', $array->language);
$channel->appendChild($language);
}
$doc = $this->_element->createElement('docs', 'http://blogs.law.harvard.edu/tech/rss');
$channel->appendChild($doc);
if (isset($array->cloud)) {
$cloud = $this->_element->createElement('cloud');
$cloud->setAttribute('domain', $array->cloud['uri']->getHost());
$cloud->setAttribute('port', $array->cloud['uri']->getPort());
$cloud->setAttribute('path', $array->cloud['uri']->getPath());
$cloud->setAttribute('registerProcedure', $array->cloud['procedure']);
$cloud->setAttribute('protocol', $array->cloud['protocol']);
$channel->appendChild($cloud);
}
if (isset($array->rating)) {
$rating = $this->_element->createElement('rating', $array->rating);
$channel->appendChild($rating);
}
if (isset($array->textInput)) {
$textinput = $this->_element->createElement('textInput');
$textinput->appendChild($this->_element->createElement('title', $array->textInput['title']));
$textinput->appendChild($this->_element->createElement('description', $array->textInput['description']));
$textinput->appendChild($this->_element->createElement('name', $array->textInput['name']));
$textinput->appendChild($this->_element->createElement('link', $array->textInput['link']));
$channel->appendChild($textinput);
}
if (isset($array->skipHours)) {
$skipHours = $this->_element->createElement('skipHours');
foreach ($array->skipHours as $hour) {
$skipHours->appendChild($this->_element->createElement('hour', $hour));
}
$channel->appendChild($skipHours);
}
if (isset($array->skipDays)) {
$skipDays = $this->_element->createElement('skipDays');
foreach ($array->skipDays as $day) {
$skipDays->appendChild($this->_element->createElement('day', $day));
}
$channel->appendChild($skipDays);
}
if (isset($array->itunes)) {
$this->_buildiTunes($channel, $array);
}
return $channel;
}
/**
* Adds the iTunes extensions to a root node
*
* @param DOMElement $root
* @param array $array
* @return void
*/
private function _buildiTunes(DOMElement $root, $array) {
/* author node */
$author = '';
if (isset($array->itunes->author)) {
$author = $array->itunes->author;
} elseif (isset($array->author)) {
$author = $array->author;
}
if (! empty($author)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:author', $author);
$root->appendChild($node);
}
/* owner node */
$author = '';
$email = '';
if (isset($array->itunes->owner)) {
if (isset($array->itunes->owner['name'])) {
$author = $array->itunes->owner['name'];
}
if (isset($array->itunes->owner['email'])) {
$email = $array->itunes->owner['email'];
}
}
if (empty($author) && isset($array->author)) {
$author = $array->author;
}
if (empty($email) && isset($array->email)) {
$email = $array->email;
}
if (! empty($author) || ! empty($email)) {
$owner = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:owner');
if (! empty($author)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:name', $author);
$owner->appendChild($node);
}
if (! empty($email)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:email', $email);
$owner->appendChild($node);
}
$root->appendChild($owner);
}
$image = '';
if (isset($array->itunes->image)) {
$image = $array->itunes->image;
} elseif (isset($array->image)) {
$image = $array->image;
}
if (! empty($image)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:image');
$node->setAttribute('href', $image);
$root->appendChild($node);
}
$subtitle = '';
if (isset($array->itunes->subtitle)) {
$subtitle = $array->itunes->subtitle;
} elseif (isset($array->description)) {
$subtitle = $array->description;
}
if (! empty($subtitle)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:subtitle', $subtitle);
$root->appendChild($node);
}
$summary = '';
if (isset($array->itunes->summary)) {
$summary = $array->itunes->summary;
} elseif (isset($array->description)) {
$summary = $array->description;
}
if (! empty($summary)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:summary', $summary);
$root->appendChild($node);
}
if (isset($array->itunes->block)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:block', $array->itunes->block);
$root->appendChild($node);
}
if (isset($array->itunes->explicit)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:explicit', $array->itunes->explicit);
$root->appendChild($node);
}
if (isset($array->itunes->keywords)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:keywords', $array->itunes->keywords);
$root->appendChild($node);
}
if (isset($array->itunes->new_feed_url)) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:new-feed-url', $array->itunes->new_feed_url);
$root->appendChild($node);
}
if (isset($array->itunes->category)) {
foreach ($array->itunes->category as $i => $category) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:category');
$node->setAttribute('text', $category['main']);
$root->appendChild($node);
$add_end_category = false;
if (! empty($category['sub'])) {
$add_end_category = true;
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:category');
$node->setAttribute('text', $category['sub']);
$root->appendChild($node);
}
if ($i > 0 || $add_end_category) {
$node = $this->_element->createElementNS('http://www.itunes.com/DTDs/Podcast-1.0.dtd', 'itunes:category');
$root->appendChild($node);
}
}
}
}
/**
* Generate the entries of the feed when working in write mode
*
* The following nodes are constructed for each feed entry
* <item>
* <title>entry title</title>
* <link>url to feed entry</link>
* <guid>url to feed entry</guid>
* <description>short text</description>
* <content:encoded>long version, can contain html</content:encoded>
* </item>
*
* @param DOMElement $root the root node to use
* @param array $array the data to use
* @return void
*/
protected function _mapFeedEntries(DOMElement $root, $array) {
Zend_Feed::registerNamespace('content', 'http://purl.org/rss/1.0/modules/content/');
foreach ($array as $dataentry) {
$item = $this->_element->createElement('item');
$title = $this->_element->createElement('title');
$title->appendChild($this->_element->createCDATASection($dataentry->title));
$item->appendChild($title);
$link = $this->_element->createElement('link', $dataentry->link);
$item->appendChild($link);
if (isset($dataentry->guid)) {
$guid = $this->_element->createElement('guid', $dataentry->guid);
$item->appendChild($guid);
}
$description = $this->_element->createElement('description');
$description->appendChild($this->_element->createCDATASection($dataentry->description));
$item->appendChild($description);
if (isset($dataentry->content)) {
$content = $this->_element->createElement('content:encoded');
$content->appendChild($this->_element->createCDATASection($dataentry->content));
$item->appendChild($content);
}
$pubdate = isset($dataentry->lastUpdate) ? $dataentry->lastUpdate : time();
$pubdate = $this->_element->createElement('pubDate', gmdate('r', $pubdate));
$item->appendChild($pubdate);
if (isset($dataentry->category)) {
foreach ($dataentry->category as $category) {
$node = $this->_element->createElement('category', $category['term']);
if (isset($category['scheme'])) {
$node->setAttribute('domain', $category['scheme']);
}
$item->appendChild($node);
}
}
if (isset($dataentry->source)) {
$source = $this->_element->createElement('source', $dataentry->source['title']);
$source->setAttribute('url', $dataentry->source['url']);
$item->appendChild($source);
}
if (isset($dataentry->comments)) {
$comments = $this->_element->createElement('comments', $dataentry->comments);
$item->appendChild($comments);
}
if (isset($dataentry->commentRss)) {
$comments = $this->_element->createElementNS('http://wellformedweb.org/CommentAPI/', 'wfw:commentRss', $dataentry->commentRss);
$item->appendChild($comments);
}
if (isset($dataentry->enclosure)) {
foreach ($dataentry->enclosure as $enclosure) {
$node = $this->_element->createElement('enclosure');
$node->setAttribute('url', $enclosure['url']);
if (isset($enclosure['type'])) {
$node->setAttribute('type', $enclosure['type']);
}
if (isset($enclosure['length'])) {
$node->setAttribute('length', $enclosure['length']);
}
$item->appendChild($node);
}
}
$root->appendChild($item);
}
}
/**
* Override Zend_Feed_Element to include <rss> root node
*
* @return string
*/
public function saveXml() {
// Return a complete document including XML prologue.
$doc = new DOMDocument($this->_element->ownerDocument->version, $this->_element->ownerDocument->actualEncoding);
$root = $doc->createElement('rss');
// Use rss version 2.0
$root->setAttribute('version', '2.0');
// Content namespace
$root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:content', 'http://purl.org/rss/1.0/modules/content/');
$root->appendChild($doc->importNode($this->_element, true));
// 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 'external/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();
}
}
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