class MediaInternetYouTubeHandler in Media: YouTube 7.2

Implementation of MediaInternetBaseHandler.

Hierarchy

• class \MediaInternetYouTubeHandler extends \MediaInternetBaseHandler

See also

hook_media_internet_providers().

File

includes/MediaInternetYouTubeHandler.inc, line 13

Extends the MediaInternetBaseHandler class to handle YouTube videos.

class MediaInternetYouTubeHandler extends MediaInternetBaseHandler {
  public function parse($embedCode) {

    // http://youtube.com/watch/*
    // http://youtube.com/embed/*
    // http://youtube.com/v/*
    // http://youtube.com/?v=*
    // http://youtu.be/*
    // http://gdata.youtube.com/feeds/api/videos/*
    $patterns = array(
      '@youtube\\.com/watch[#\\?].*?v=([^"\\& ]+)@i',
      '@youtube\\.com/embed/([^"\\&\\? ]+)@i',
      '@youtube\\.com/v/([^"\\&\\? ]+)@i',
      '@youtube\\.com/\\?v=([^"\\& ]+)@i',
      '@youtu\\.be/([^"\\&\\? ]+)@i',
      '@gdata\\.youtube\\.com/feeds/api/videos/([^"\\&\\? ]+)@i',
    );
    foreach ($patterns as $pattern) {
      preg_match($pattern, $embedCode, $matches);

      // @TODO: Parse is called often. Refactor so that valid ID is checked
      // when a video is added, but not every time the embedCode is parsed.
      if (isset($matches[1]) && self::validId($matches[1])) {
        return file_stream_wrapper_uri_normalize('youtube://v/' . $matches[1]);
      }
    }
  }
  public function claim($embedCode) {
    if ($this
      ->parse($embedCode)) {
      return TRUE;
    }
  }
  public function getFileObject() {
    $uri = $this
      ->parse($this->embedCode);
    $file = file_uri_to_object($uri, TRUE);

    // Try to default the file name to the video's title.
    if (empty($file->fid) && ($info = $this
      ->getOEmbed())) {
      $file->filename = truncate_utf8($info['title'], 255);
    }
    return $file;
  }

  /**
   * Returns information about the media.
   *
   * See http://www.oembed.com.
   *
   * @return
   *   If oEmbed information is available, an array containing 'title', 'type',
   *   'url', and other information as specified by the oEmbed standard.
   *   Otherwise, NULL.
   */
  public function getOEmbed() {
    $uri = $this
      ->parse($this->embedCode);
    $external_url = file_create_url($uri);
    $oembed_url = url('http://www.youtube.com/oembed', array(
      'query' => array(
        'url' => $external_url,
        'format' => 'json',
      ),
    ));
    $response = drupal_http_request($oembed_url);
    if (!isset($response->error)) {
      return drupal_json_decode($response->data);
    }
    else {
      throw new Exception("Error Processing Request. (Error: {$response->code}, {$response->error})");
      return;
    }
  }

  /**
   * Check if a YouTube video ID is valid.
   *
   * @return boolean
   *   TRUE if the video ID is valid, or throws a
   *   MediaInternetValidationException otherwise.
   */
  public static function validId($id) {
    $uri = file_stream_wrapper_uri_normalize('youtube://v/' . check_plain($id));
    $external_url = file_create_url($uri);
    $oembed_url = url('http://www.youtube.com/oembed', array(
      'query' => array(
        'url' => $external_url,
        'format' => 'json',
      ),
    ));
    $response = drupal_http_request($oembed_url, array(
      'method' => 'HEAD',
    ));
    if ($response->code == 401) {
      throw new MediaInternetValidationException('Embedding has been disabled for this YouTube video.');
    }
    elseif ($response->code != 200) {
      throw new MediaInternetValidationException('The YouTube video ID is invalid or the video was deleted.');
    }
    return TRUE;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
MediaInternetYouTubeHandler::claim	public	function
MediaInternetYouTubeHandler::getFileObject	public	function
MediaInternetYouTubeHandler::getOEmbed	public	function	Returns information about the media.
MediaInternetYouTubeHandler::parse	public	function
MediaInternetYouTubeHandler::validId	public static	function	Check if a YouTube video ID is valid.