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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\Writer\Extension\Atom\Renderer;
use DOMDocument;
use DOMElement;
use Zend\Feed\Writer\Extension;
/**
*/
class Feed extends Extension\AbstractRenderer
{
/**
* Set to TRUE if a rendering method actually renders something. This
* is used to prevent premature appending of a XML namespace declaration
* until an element which requires it is actually appended.
*
* @var bool
*/
protected $called = false;
/**
* Render feed
*
* @return void
*/
public function render()
{
/**
* RSS 2.0 only. Used mainly to include Atom links and
* Pubsubhubbub Hub endpoint URIs under the Atom namespace
*/
if (strtolower($this->getType()) == 'atom') {
return;
}
$this->_setFeedLinks($this->dom, $this->base);
$this->_setHubs($this->dom, $this->base);
if ($this->called) {
$this->_appendNamespaces();
}
}
/**
* Append namespaces to root element of feed
*
* @return void
*/
protected function _appendNamespaces()
{
$this->getRootElement()->setAttribute('xmlns:atom',
'http://www.w3.org/2005/Atom');
}
/**
* Set feed link elements
*
* @param DOMDocument $dom
* @param DOMElement $root
* @return void
*/
protected function _setFeedLinks(DOMDocument $dom, DOMElement $root)
{
$flinks = $this->getDataContainer()->getFeedLinks();
if (!$flinks || empty($flinks)) {
return;
}
foreach ($flinks as $type => $href) {
if (strtolower($type) == $this->getType()) { // issue 2605
$mime = 'application/' . strtolower($type) . '+xml';
$flink = $dom->createElement('atom:link');
$root->appendChild($flink);
$flink->setAttribute('rel', 'self');
$flink->setAttribute('type', $mime);
$flink->setAttribute('href', $href);
}
}
$this->called = true;
}
/**
* Set PuSH hubs
*
* @param DOMDocument $dom
* @param DOMElement $root
* @return void
*/
protected function _setHubs(DOMDocument $dom, DOMElement $root)
{
$hubs = $this->getDataContainer()->getHubs();
if (!$hubs || empty($hubs)) {
return;
}
foreach ($hubs as $hubUrl) {
$hub = $dom->createElement('atom:link');
$hub->setAttribute('rel', 'hub');
$hub->setAttribute('href', $hubUrl);
$root->appendChild($hub);
}
$this->called = true;
}
}