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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Feed\Reader\Extension\CreativeCommons;
use Zend\Feed\Reader\Extension;
class Feed extends Extension\AbstractFeed
{
/**
* Get the entry license
*
* @param int $index
* @return string|null
*/
public function getLicense($index = 0)
{
$licenses = $this->getLicenses();
if (isset($licenses[$index])) {
return $licenses[$index];
}
return;
}
/**
* Get the entry licenses
*
* @return array
*/
public function getLicenses()
{
$name = 'licenses';
if (array_key_exists($name, $this->data)) {
return $this->data[$name];
}
$licenses = [];
$list = $this->xpath->evaluate('channel/cc:license');
if ($list->length) {
foreach ($list as $license) {
$licenses[] = $license->nodeValue;
}
$licenses = array_unique($licenses);
}
$this->data[$name] = $licenses;
return $this->data[$name];
}
/**
* Register Creative Commons namespaces
*
* @return void
*/
protected function registerNamespaces()
{
$this->xpath->registerNamespace('cc', 'http://backend.userland.com/creativeCommonsRssModule');
}
}