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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) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Rss.php 18367 2009-09-22 14:55:59Z padraic $
*/
/**
* @see Zend_Feed_Reader
*/
require_once 'Zend/Feed/Reader.php';
/**
* @see Zend_Feed_Reader_EntryInterface
*/
require_once 'Zend/Feed/Reader/EntryInterface.php';
/**
* @see Zend_Feed_Reader_EntryAbstract
*/
require_once 'Zend/Feed/Reader/EntryAbstract.php';
/**
* @see Zend_Feed_Reader_Extension_DublinCore_Entry
*/
require_once 'Zend/Feed/Reader/Extension/DublinCore/Entry.php';
/**
* @see Zend_Feed_Reader_Extension_Content_Entry
*/
require_once 'Zend/Feed/Reader/Extension/Content/Entry.php';
/**
* @see Zend_Feed_Reader_Extension_Atom_Entry
*/
require_once 'Zend/Feed/Reader/Extension/Atom/Entry.php';
/**
* @see Zend_Feed_Reader_Extension_WellformedWeb_Entry
*/
require_once 'Zend/Feed/Reader/Extension/WellFormedWeb/Entry.php';
/**
* @see Zend_Feed_Reader_Extension_Slash_Entry
*/
require_once 'Zend/Feed/Reader/Extension/Slash/Entry.php';
/**
* @see Zend_Feed_Reader_Extension_Thread_Entry
*/
require_once 'Zend/Feed/Reader/Extension/Thread/Entry.php';
/**
* @see Zend_Date
*/
require_once 'Zend/Date.php';
/**
* @category Zend
* @package Zend_Feed_Reader
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Feed_Reader_Entry_Rss extends Zend_Feed_Reader_EntryAbstract implements Zend_Feed_Reader_EntryInterface
{
/**
* XPath query for RDF
*
* @var string
*/
protected $_xpathQueryRdf = '';
/**
* XPath query for RSS
*
* @var string
*/
protected $_xpathQueryRss = '';
/**
* Constructor
*
* @param Zend_Feed_Entry_Abstract $entry
* @param string $entryKey
* @param string $type
* @return void
*/
public function __construct(DOMElement $entry, $entryKey, $type = null)
{
parent::__construct($entry, $entryKey, $type);
$this->_xpathQueryRss = '//item[' . ($this->_entryKey+1) . ']';
$this->_xpathQueryRdf = '//rss:item[' . ($this->_entryKey+1) . ']';
$pluginLoader = Zend_Feed_Reader::getPluginLoader();
$dublinCoreClass = $pluginLoader->getClassName('DublinCore_Entry');
$this->_extensions['DublinCore_Entry'] = new $dublinCoreClass($entry, $entryKey, $type);
$contentClass = $pluginLoader->getClassName('Content_Entry');
$this->_extensions['Content_Entry'] = new $contentClass($entry, $entryKey, $type);
$atomClass = $pluginLoader->getClassName('Atom_Entry');
$this->_extensions['Atom_Entry'] = new $atomClass($entry, $entryKey, $type);
$wfwClass = $pluginLoader->getClassName('WellFormedWeb_Entry');
$this->_extensions['WellFormedWeb_Entry'] = new $wfwClass($entry, $entryKey, $type);
$slashClass = $pluginLoader->getClassName('Slash_Entry');
$this->_extensions['Slash_Entry'] = new $slashClass($entry, $entryKey, $type);
$threadClass = $pluginLoader->getClassName('Thread_Entry');
$this->_extensions['Thread_Entry'] = new $threadClass($entry, $entryKey, $type);
}
/**
* Get an author entry
*
* @param DOMElement $element
* @return string
*/
public function getAuthor($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'];
}
$authors = array();
// @todo: create a list from all potential sources rather than from alternatives
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$list = $this->_xpath->evaluate($this->_xpathQueryRss.'//author');
} else {
$list = $this->_xpath->evaluate($this->_xpathQueryRdf.'//rss:author');
}
if (!$list->length) {
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 && $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$list = $this->_xpath->query('//author');
} else {
$list = $this->_xpath->query('//rss:author');
}
}
if ($list->length) {
foreach ($list as $author) {
if ($this->getType() == Zend_Feed_Reader::TYPE_RSS_20
&& preg_match("/\(([^\)]+)\)/", $author->nodeValue, $matches, PREG_OFFSET_CAPTURE)
) {
// source name from RSS 2.0 <author>
// format "joe@example.com (Joe Bloggs)"
$authors[] = $matches[1][0];
} else {
$authors[] = $author->nodeValue;
}
}
$authors = array_unique($authors);
}
if (empty($authors)) {
$authors = $this->getExtension('DublinCore')->getAuthors();
}
if (empty($authors)) {
$authors = $this->getExtension('Atom')->getAuthors();
}
$this->_data['authors'] = $authors;
return $this->_data['authors'];
}
/**
* Get the entry content
*
* @return string
*/
public function getContent()
{
if (array_key_exists('content', $this->_data)) {
return $this->_data['content'];
}
$content = $this->getExtension('Content')->getContent();
if (!$content) {
$content = $this->getDescription();
}
if (empty($content)) {
$content = $this->getExtension('Atom')->getContent();
}
$this->_data['content'] = $content;
return $this->_data['content'];
}
/**
* Get the entry's date of creation
*
* @return string
*/
public function getDateCreated()
{
return $this->getDateModified();
}
/**
* Get the entry's date of modification
*
* @return string
*/
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 = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/pubDate)');
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 entry description
*
* @return string
*/
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 = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/description)');
} else {
$description = $this->_xpath->evaluate('string('.$this->_xpathQueryRdf.'/rss:description)');
}
if (!$description) {
$description = $this->getExtension('DublinCore')->getDescription();
}
if (empty($description)) {
$description = $this->getExtension('Atom')->getDescription();
}
if (!$description) {
$description = null;
} else {
$description = html_entity_decode($description, ENT_QUOTES, $this->getEncoding());
}
$this->_data['description'] = $description;
return $this->_data['description'];
}
/**
* Get the entry enclosure
* @return string
*/
public function getEnclosure()
{
if (array_key_exists('enclosure', $this->_data)) {
return $this->_data['enclosure'];
}
$enclosure = null;
if ($this->getType() == Zend_Feed_Reader::TYPE_RSS_20) {
$nodeList = $this->_xpath->query($this->_xpathQueryRss . '/enclosure');
if ($nodeList->length > 0) {
$enclosure = new stdClass();
$enclosure->url = $nodeList->item(0)->getAttribute('url');
$enclosure->length = $nodeList->item(0)->getAttribute('length');
$enclosure->type = $nodeList->item(0)->getAttribute('type');
}
}
if (!$enclosure) {
$enclosure = $this->getExtension('Atom')->getEnclosure();
}
$this->_data['enclosure'] = $enclosure;
return $this->_data['enclosure'];
}
/**
* Get the entry ID
*
* @return string
*/
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 = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/guid)');
}
if (!$id) {
$id = $this->getExtension('DublinCore')->getId();
}
if (empty($id)) {
$id = $this->getExtension('Atom')->getId();
}
if (!$id) {
if ($this->getPermalink()) {
$id = $this->getPermalink();
} elseif ($this->getTitle()) {
$id = $this->getTitle();
} else {
$id = null;
}
}
$this->_data['id'] = $id;
return $this->_data['id'];
}
/**
* Get a specific link
*
* @param int $index
* @return string
*/
public function getLink($index = 0)
{
if (!array_key_exists('links', $this->_data)) {
$this->getLinks();
}
if (isset($this->_data['links'][$index])) {
return $this->_data['links'][$index];
}
return null;
}
/**
* Get all links
*
* @return array
*/
public function getLinks()
{
if (array_key_exists('links', $this->_data)) {
return $this->_data['links'];
}
$links = array();
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10 &&
$this->getType() !== Zend_Feed_Reader::TYPE_RSS_090) {
$list = $this->_xpath->query($this->_xpathQueryRss.'//link');
} else {
$list = $this->_xpath->query($this->_xpathQueryRdf.'//rss:link');
}
if (!$list->length) {
$links = $this->getExtension('Atom')->getLinks();
} else {
foreach ($list as $link) {
$links[] = $link->nodeValue;
}
}
$this->_data['links'] = $links;
return $this->_data['links'];
}
/**
* Get a permalink to the entry
*
* @return string
*/
public function getPermalink()
{
return $this->getLink(0);
}
/**
* Get the entry title
*
* @return string
*/
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 = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/title)');
} else {
$title = $this->_xpath->evaluate('string('.$this->_xpathQueryRdf.'/rss:title)');
}
if (!$title) {
$title = $this->getExtension('DublinCore')->getTitle();
}
if (!$title) {
$title = $this->getExtension('Atom')->getTitle();
}
if (!$title) {
$title = null;
}
$this->_data['title'] = $title;
return $this->_data['title'];
}
/**
* Get the number of comments/replies for current entry
*
* @return string|null
*/
public function getCommentCount()
{
if (array_key_exists('commentcount', $this->_data)) {
return $this->_data['commentcount'];
}
$commentcount = $this->getExtension('Slash')->getCommentCount();
if (!$commentcount) {
$commentcount = $this->getExtension('Thread')->getCommentCount();
}
if (!$commentcount) {
$commentcount = $this->getExtension('Atom')->getCommentCount();
}
if (!$commentcount) {
$commentcount = null;
}
$this->_data['commentcount'] = $commentcount;
return $this->_data['commentcount'];
}
/**
* Returns a URI pointing to the HTML page where comments can be made on this entry
*
* @return string
*/
public function getCommentLink()
{
if (array_key_exists('commentlink', $this->_data)) {
return $this->_data['commentlink'];
}
$commentlink = null;
if ($this->getType() !== Zend_Feed_Reader::TYPE_RSS_10
&& $this->getType() !== Zend_Feed_Reader::TYPE_RSS_090
) {
$commentlink = $this->_xpath->evaluate('string('.$this->_xpathQueryRss.'/comments)');
}
if (!$commentlink) {
$commentlink = $this->getExtension('Atom')->getCommentLink();
}
if (!$commentlink) {
$commentlink = null;
}
$this->_data['commentlink'] = $commentlink;
return $this->_data['commentlink'];
}
/**
* Returns a URI pointing to a feed of all comments for this entry
*
* @return string
*/
public function getCommentFeedLink()
{
if (array_key_exists('commentfeedlink', $this->_data)) {
return $this->_data['commentfeedlink'];
}
$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);
}
}
}
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