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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_Reader
* @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 19044 2009-11-19 16:44:24Z padraic $
*/
/**
* @see Zend_Feed_Reader_FeedAbstract
*/
require_once 'Zend/Feed/Reader/FeedAbstract.php';
/**
* @see Zend_feed_Reader_Extension_Atom_Feed
*/
require_once 'Zend/Feed/Reader/Extension/Atom/Feed.php';
/**
* @see Zend_Feed_Reader_Extension_DublinCore_Feed
*/
require_once 'Zend/Feed/Reader/Extension/DublinCore/Feed.php';
/**
* @see Zend_Date
*/
require_once 'Zend/Date.php';
/**
* @category Zend
* @package Zend_Feed_Reader
* @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_Reader_Feed_Rss extends Zend_Feed_Reader_FeedAbstract
{
/**
* Constructor
*
* @param DOMDocument $dom
* @param string $type
*/
public function __construct(DomDocument $dom, $type = null)
{
parent::__construct($dom, $type);
$dublinCoreClass = Zend_Feed_Reader::getPluginLoader()->getClassName('DublinCore_Feed');
$this->_extensions['DublinCore_Feed'] = new $dublinCoreClass($dom, $this->_data['type'], $this->_xpath);
$atomClass = Zend_Feed_Reader::getPluginLoader()->getClassName('Atom_Feed');
$this->_extensions['Atom_Feed'] = new $atomClass($dom, $this->_data['type'], $this->_xpath);
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 && $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$xpathPrefix = '/rss/channel';
} else {
$xpathPrefix = '/rdf:RDF/rss:channel';
}
foreach ($this->_extensions as $extension) {
$extension->setXpathPrefix($xpathPrefix);
}
}
/**
* Get a single author
*
* @param int $index
* @return string|null
*/
public function getAuthor($index = 0)
{
$authors = $this->getAuthors();
if (isset($authors[$index])) {
return $authors[$index];
}
return null;
}
/**
* Get an array with feed authors
*
* @return array
*/
public function getAuthors()
{
if (array_key_exists('authors', $this->_data)) {
return $this->_data['authors'];
}
$authors = array();
if (empty($authors)) {
$authors = $this->getExtension('DublinCore')->getAuthors();
}
if (empty($authors)) {
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 && $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$list = $this->_xpath->query('//author');
} else {
$list = $this->_xpath->query('//rss:author');
}
foreach ($list as $authorObj) {
$authors[] = $authorObj->nodeValue;
}
}
if (empty($authors)) {
$authors = $this->getExtension('Atom')->getAuthors();
}
if (empty($authors)) {
$authors = null;
} else {
$authors = array_unique($authors);
}
$this->_data['authors'] = $authors;
return $this->_data['authors'];
}
/**
* Get the copyright entry
*
* @return string|null
*/
public function getCopyright()
{
if (array_key_exists('copyright', $this->_data)) {
return $this->_data['copyright'];
}
$copyright = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$copyright = $this->_xpath->evaluate('string(/rss/channel/copyright)');
}
if (!$copyright && !is_null($this->getExtension('DublinCore'))) {
$copyright = $this->getExtension('DublinCore')->getCopyright();
}
if (empty($copyright)) {
$copyright = $this->getExtension('Atom')->getCopyright();
}
if (!$copyright) {
$copyright = null;
}
$this->_data['copyright'] = $copyright;
return $this->_data['copyright'];
}
/**
* Get the feed creation date
*
* @return string|null
*/
public function getDateCreated()
{
return $this->getDateModified();
}
/**
* Get the feed modification date
*
* @return Zend_Date
*/
public function getDateModified()
{
if (array_key_exists('datemodified', $this->_data)) {
return $this->_data['datemodified'];
}
$dateModified = null;
$date = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$dateModified = $this->_xpath->evaluate('string(/rss/channel/pubDate)');
if (!$dateModified) {
$dateModified = $this->_xpath->evaluate('string(/rss/channel/lastBuildDate)');
}
if ($dateModified) {
$dateStandards = array(Zend_Date::RSS, Zend_Date::RFC_822,
Zend_Date::RFC_2822, Zend_Date::DATES);
$date = new Zend_Date;
foreach ($dateStandards as $standard) {
try {
$date->set($dateModified, $standard);
break;
} catch (Zend_Date_Exception $e) {
if ($standard == Zend_Date::DATES) {
require_once 'Zend/Feed/Exception.php';
throw new Zend_Feed_Exception(
'Could not load date due to unrecognised'
.' format (should follow RFC 822 or 2822):'
. $e->getMessage()
);
}
}
}
}
}
if (!$date) {
$date = $this->getExtension('DublinCore')->getDate();
}
if (!$date) {
$date = $this->getExtension('Atom')->getDateModified();
}
if (!$date) {
$date = null;
}
$this->_data['datemodified'] = $date;
return $this->_data['datemodified'];
}
/**
* Get the feed description
*
* @return string|null
*/
public function getDescription()
{
if (array_key_exists('description', $this->_data)) {
return $this->_data['description'];
}
$description = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$description = $this->_xpath->evaluate('string(/rss/channel/description)');
} else {
$description = $this->_xpath->evaluate('string(/rdf:RDF/rss:channel/rss:description)');
}
if (!$description && !is_null($this->getExtension('DublinCore'))) {
$description = $this->getExtension('DublinCore')->getDescription();
}
if (empty($description)) {
$description = $this->getExtension('Atom')->getDescription();
}
if (!$description) {
$description = null;
}
$this->_data['description'] = $description;
return $this->_data['description'];
}
/**
* Get the feed ID
*
* @return string|null
*/
public function getId()
{
if (array_key_exists('id', $this->_data)) {
return $this->_data['id'];
}
$id = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$id = $this->_xpath->evaluate('string(/rss/channel/guid)');
}
if (!$id && !is_null($this->getExtension('DublinCore'))) {
$id = $this->getExtension('DublinCore')->getId();
}
if (empty($id)) {
$id = $this->getExtension('Atom')->getId();
}
if (!$id) {
if ($this->getLink()) {
$id = $this->getLink();
} elseif ($this->getTitle()) {
$id = $this->getTitle();
} else {
$id = null;
}
}
$this->_data['id'] = $id;
return $this->_data['id'];
}
/**
* Get the feed language
*
* @return string|null
*/
public function getLanguage()
{
if (array_key_exists('language', $this->_data)) {
return $this->_data['language'];
}
$language = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$language = $this->_xpath->evaluate('string(/rss/channel/language)');
}
if (!$language && !is_null($this->getExtension('DublinCore'))) {
$language = $this->getExtension('DublinCore')->getLanguage();
}
if (empty($language)) {
$language = $this->getExtension('Atom')->getLanguage();
}
if (!$language) {
$language = $this->_xpath->evaluate('string(//@xml:lang[1])');
}
if (!$language) {
$language = null;
}
$this->_data['language'] = $language;
return $this->_data['language'];
}
/**
* Get a link to the feed
*
* @return string|null
*/
public function getLink()
{
if (array_key_exists('link', $this->_data)) {
return $this->_data['link'];
}
$link = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$link = $this->_xpath->evaluate('string(/rss/channel/link)');
} else {
$link = $this->_xpath->evaluate('string(/rdf:RDF/rss:channel/rss:link)');
}
if (empty($link)) {
$link = $this->getExtension('Atom')->getLink();
}
if (!$link) {
$link = null;
}
$this->_data['link'] = $link;
return $this->_data['link'];
}
/**
* Get a link to the feed XML
*
* @return string|null
*/
public function getFeedLink()
{
if (array_key_exists('feedlink', $this->_data)) {
return $this->_data['feedlink'];
}
$link = null;
$link = $this->getExtension('Atom')->getFeedLink();
if (!$link) {
$link = null;
}
$this->_data['feedlink'] = $link;
return $this->_data['feedlink'];
}
/**
* Get the feed generator entry
*
* @return string|null
*/
public function getGenerator()
{
if (array_key_exists('generator', $this->_data)) {
return $this->_data['generator'];
}
$generator = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$generator = $this->_xpath->evaluate('string(/rss/channel/generator)');
}
if (!$generator) {
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$generator = $this->_xpath->evaluate('string(/rss/channel/atom:generator)');
} else {
$generator = $this->_xpath->evaluate('string(/rdf:RDF/rss:channel/atom:generator)');
}
if ($generator) {
$generator = html_entity_decode($generator, ENT_QUOTES, $this->getEncoding());
}
}
if (empty($generator)) {
$generator = $this->getExtension('Atom')->getGenerator();
}
if (!$generator) {
$generator = null;
}
$this->_data['generator'] = $generator;
return $this->_data['generator'];
}
/**
* Get the feed title
*
* @return string|null
*/
public function getTitle()
{
if (array_key_exists('title', $this->_data)) {
return $this->_data['title'];
}
$title = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$title = $this->_xpath->evaluate('string(/rss/channel/title)');
} else {
$title = $this->_xpath->evaluate('string(/rdf:RDF/rss:channel/rss:title)');
}
if (!$title && !is_null($this->getExtension('DublinCore'))) {
$title = $this->getExtension('DublinCore')->getTitle();
}
if (!$title) {
$title = $this->getExtension('Atom')->getTitle();
}
if (!$title) {
$title = null;
}
$this->_data['title'] = $title;
return $this->_data['title'];
}
/**
* Read all entries to the internal entries array
*
*/
protected function _indexEntries()
{
$entries = array();
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 && $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$entries = $this->_xpath->evaluate('//item');
} else {
$entries = $this->_xpath->evaluate('//rss:item');
}
foreach($entries as $index=>$entry) {
$this->_entries[$index] = $entry;
}
}
/**
* Register the default namespaces for the current feed format
*
*/
protected function _registerNamespaces()
{
switch ($this->_data['type']) {
case Zend_Feed_Reader::TYPE_RSS_10:
$this->_xpath->registerNamespace('rdf', Zend_Feed_Reader::NAMESPACE_RDF);
$this->_xpath->registerNamespace('rss', Zend_Feed_Reader::NAMESPACE_RSS_10);
break;
case Zend_Feed_Reader::TYPE_RSS_090:
$this->_xpath->registerNamespace('rdf', Zend_Feed_Reader::NAMESPACE_RDF);
$this->_xpath->registerNamespace('rss', Zend_Feed_Reader::NAMESPACE_RSS_090);
break;
}
}
}
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