public function EasyRdf_Serialiser_Turtle::serialise in Zircon Profile 8

Same name and namespace in other branches

1. 8.0 vendor/easyrdf/easyrdf/lib/EasyRdf/Serialiser/Turtle.php \EasyRdf_Serialiser_Turtle::serialise()

Serialise an EasyRdf_Graph to Turtle.

Parameters

EasyRdf_Graph $graph An EasyRdf_Graph object.:

string $format The name of the format to convert to.:

array $options:

Return value

string The RDF in the new desired format.

Throws

EasyRdf_Exception

Overrides EasyRdf_Serialiser::serialise

File

vendor/easyrdf/easyrdf/lib/EasyRdf/Serialiser/Turtle.php, line 340

Class

EasyRdf_Serialiser_Turtle

Class to serialise an EasyRdf_Graph to Turtle with no external dependancies.

Code

public function serialise($graph, $format, array $options = array()) {
  parent::checkSerialiseParams($graph, $format);
  if ($format != 'turtle' and $format != 'n3') {
    throw new EasyRdf_Exception("EasyRdf_Serialiser_Turtle does not support: {$format}");
  }
  $this->prefixes = array();
  $this->outputtedBnodes = array();
  $turtle = '';
  $turtle .= $this
    ->serialiseSubjects($graph, 'uri');
  $turtle .= $this
    ->serialiseSubjects($graph, 'bnode');
  if (count($this->prefixes)) {
    return $this
      ->serialisePrefixes() . "\n" . $turtle;
  }
  else {
    return $turtle;
  }
}