text: <?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\Renderer\Feed\Atom;
  
  use DOMDocument;
  use DOMElement;
  use Zend\Feed\Writer;
  use Zend\Feed\Writer\Renderer;
  
  class Source extends AbstractAtom implements Renderer\RendererInterface
  {
      /**
       * Constructor
       *
       * @param  Writer\Source $container
       */
      public function __construct(Writer\Source $container)
      {
          parent::__construct($container);
      }
  
      /**
       * Render Atom Feed Metadata (Source element)
       *
       * @return 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']);
          }
      }
  }
  