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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: Feed.php 18951 2009-11-12 16:26:19Z alexander $
*/
/**
* @see Zend_Feed_Reader_Extension_FeedAbstract
*/
require_once 'Zend/Feed/Reader/Extension/FeedAbstract.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_Extension_DublinCore_Feed
extends Zend_Feed_Reader_Extension_FeedAbstract
{
/**
* 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();
$list = $this->_xpath->query('//dc11:creator');
if (!$list->length) {
$list = $this->_xpath->query('//dc10:creator');
}
if (!$list->length) {
$list = $this->_xpath->query('//dc11:publisher');
if (!$list->length) {
$list = $this->_xpath->query('//dc10:publisher');
}
}
foreach ($list as $authorObj) {
$authors[] = $authorObj->nodeValue;
}
if (!empty($authors)) {
$authors = array_unique($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;
$copyright = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc11:rights)');
if (!$copyright) {
$copyright = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc10:rights)');
}
if (!$copyright) {
$copyright = null;
}
$this->_data['copyright'] = $copyright;
return $this->_data['copyright'];
}
/**
* Get the feed description
*
* @return string|null
*/
public function getDescription()
{
if (array_key_exists('description', $this->_data)) {
return $this->_data['description'];
}
$description = null;
$description = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc11:description)');
if (!$description) {
$description = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc10:description)');
}
if (!$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;
$id = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc11:identifier)');
if (!$id) {
$id = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc10:identifier)');
}
$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;
$language = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc11:language)');
if (!$language) {
$language = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc10:language)');
}
if (!$language) {
$language = null;
}
$this->_data['language'] = $language;
return $this->_data['language'];
}
/**
* Get the feed title
*
* @return string|null
*/
public function getTitle()
{
if (array_key_exists('title', $this->_data)) {
return $this->_data['title'];
}
$title = null;
$title = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc11:title)');
if (!$title) {
$title = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc10:title)');
}
if (!$title) {
$title = null;
}
$this->_data['title'] = $title;
return $this->_data['title'];
}
/**
*
*
* @return Zend_Date|null
*/
public function getDate()
{
if (array_key_exists('date', $this->_data)) {
return $this->_data['date'];
}
$d = null;
$date = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc11:date)');
if (!$date) {
$date = $this->_xpath->evaluate('string(' . $this->getXpathPrefix() . '/dc10:date)');
}
if ($date) {
$d = new Zend_Date;
$d->set($date, Zend_Date::ISO_8601);
}
$this->_data['date'] = $d;
return $this->_data['date'];
}
/**
* Register the default namespaces for the current feed format
*
* @return void
*/
protected function _registerNamespaces()
{
$this->_xpath->registerNamespace('dc10', 'http://purl.org/dc/elements/1.0/');
$this->_xpath->registerNamespace('dc11', 'http://purl.org/dc/elements/1.1/');
}
}
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