/**
* 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);
$json = EasyRdf_Utils::execCommandPipe($this->rapperCmd, array('--quiet', '--input', $format, '--output', 'json', '--ignore-errors', '--input-uri', $baseUri, '--output-uri', '-', '-'), $data);
// Parse in the JSON
return parent::parse($graph, $json, 'json', $baseUri);
}
/**
* Parse an RDF document into an EasyRdf_Graph
*
* @param string $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 $baseUri the base URI of the data being parsed
* @return boolean true if parsing was successful
*/
public function parse($graph, $data, $format, $baseUri)
{
parent::checkParseParams($graph, $data, $format, $baseUri);
// Open a pipe to the rapper command
$descriptorspec = array(0 => array("pipe", "r"), 1 => array("pipe", "w"), 2 => array("pipe", "w"));
$process = proc_open(escapeshellcmd($this->_rapperCmd) . " --quiet " . " --input " . escapeshellarg($format) . " --output json " . " --ignore-errors " . " --input-uri " . escapeshellarg($baseUri) . " --output-uri -" . " - ", $descriptorspec, $pipes, '/tmp', null);
if (is_resource($process)) {
// $pipes now looks like this:
// 0 => writeable handle connected to child stdin
// 1 => readable handle connected to child stdout
// 2 => readable handle connected to child stderr
fwrite($pipes[0], $data);
fclose($pipes[0]);
$data = stream_get_contents($pipes[1]);
fclose($pipes[1]);
$error = stream_get_contents($pipes[2]);
fclose($pipes[2]);
// It is important that you close any pipes before calling
// proc_close in order to avoid a deadlock
$returnValue = proc_close($process);
if ($returnValue) {
throw new EasyRdf_Exception("Failed to parse RDF ({$returnValue}): " . $error);
}
} else {
throw new EasyRdf_Exception("Failed to execute rapper command.");
}
// Parse in the JSON
return parent::parse($graph, $data, 'json', $baseUri);
}
