Source.php

<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 * @package   Zend_Feed
 */

namespace Zend\Feed\Writer\Renderer\Feed\Atom;

use DOMDocument;
use DOMElement;

/**
 * @category   Zend
 * @package    Zend_Feed_Writer
 */
class Source extends AbstractAtom implements \Zend\Feed\Writer\Renderer\RendererInterface
{

    /**
     * Constructor
     *
     * @param  \Zend\Feed\Writer\Source $container
     */
    public function __construct (\Zend\Feed\Writer\Source $container)
    {
        parent::__construct($container);
    }

    /**
     * Render Atom Feed Metadata (Source element)
     *
     * @return \Zend\Feed\Writer\Renderer\Feed\Atom
     */
    public function render()
    {
        if (!$this->container->getEncoding()) {
            $this->container->setEncoding('UTF-8');
        }
        $this->dom = new DOMDocument('1.0', $this->container->getEncoding());
        $this->dom->formatOutput = true;
        $root = $this->dom->createElement('source');
        $this->setRootElement($root);
        $this->dom->appendChild($root);
        $this->_setLanguage($this->dom, $root);
        $this->_setBaseUrl($this->dom, $root);
        $this->_setTitle($this->dom, $root);
        $this->_setDescription($this->dom, $root);
        $this->_setDateCreated($this->dom, $root);
        $this->_setDateModified($this->dom, $root);
        $this->_setGenerator($this->dom, $root);
        $this->_setLink($this->dom, $root);
        $this->_setFeedLinks($this->dom, $root);
        $this->_setId($this->dom, $root);
        $this->_setAuthors($this->dom, $root);
        $this->_setCopyright($this->dom, $root);
        $this->_setCategories($this->dom, $root);

        foreach ($this->extensions as $ext) {
            $ext->setType($this->getType());
            $ext->setRootElement($this->getRootElement());
            $ext->setDomDocument($this->getDomDocument(), $root);
            $ext->render();
        }
        return $this;
    }

    /**
     * Set feed generator string
     *
     * @param  DOMDocument $dom
     * @param  DOMElement $root
     * @return void
     */
    protected function _setGenerator(DOMDocument $dom, DOMElement $root)
    {
        if(!$this->getDataContainer()->getGenerator()) {
            return;
        }

        $gdata = $this->getDataContainer()->getGenerator();
        $generator = $dom->createElement('generator');
        $root->appendChild($generator);
        $text = $dom->createTextNode($gdata['name']);
        $generator->appendChild($text);
        if (array_key_exists('uri', $gdata)) {
            $generator->setAttribute('uri', $gdata['uri']);
        }
        if (array_key_exists('version', $gdata)) {
            $generator->setAttribute('version', $gdata['version']);
        }
    }

}