class EasyRdf_Parser_Arc

class EasyRdf_Parser_Arc extends EasyRdf_Parser_RdfPhp {
  private static $supportedTypes = array(
    'rdfxml' => 'RDFXML',
    'turtle' => 'Turtle',
    'ntriples' => 'Turtle',
    'rdfa' => 'SemHTML',
  );

  /**
   * Constructor
   *
   * @return object EasyRdf_Parser_Arc
   */
  public function __construct() {
    require_once 'arc/ARC2.php';
  }

  /**
   * Parse an RDF document into an EasyRdf_Graph
   *
   * @param object EasyRdf_Graph $graph   the graph to load the data into
   * @param string               $data    the RDF document data
   * @param string               $format  the format of the input data
   * @param string               $baseUri the base URI of the data being parsed
   * @return integer             The number of triples added to the graph
   */
  public function parse($graph, $data, $format, $baseUri) {
    parent::checkParseParams($graph, $data, $format, $baseUri);
    if (array_key_exists($format, self::$supportedTypes)) {
      $className = self::$supportedTypes[$format];
    }
    else {
      throw new EasyRdf_Exception("EasyRdf_Parser_Arc does not support: {$format}");
    }
    $parser = ARC2::getParser($className);
    if ($parser) {
      $parser
        ->parse($baseUri, $data);
      $rdfphp = $parser
        ->getSimpleIndex(false);
      return parent::parse($graph, $rdfphp, 'php', $baseUri);
    }
    else {
      throw new EasyRdf_Exception("ARC2 failed to get a {$className} parser.");
    }
  }

}