function rdfRead($F)
{
extract($F);
$fileclean = $file . '_clean';
#Remove the files
#$root = ($_REQUEST['root']!='')?$_REQUEST['root']:$argv[4];
$root = $inputs['root'];
$inData = $inputs;
#Before parsing the RDF, remove the files from the document
#$data = removeFiles($file); ##COMPLETED IN A SEPARATE SCRIPT (momentarily because of segmantation fault)
$data = fread(fopen($fileclean, 'r+'), filesize($fileclean));
define("RDFAPI_INCLUDE_DIR", S3DB_SERVER_ROOT . "/pearlib/rdfapi-php/api/");
include RDFAPI_INCLUDE_DIR . "RdfAPI.php";
include RDFAPI_INCLUDE_DIR . "syntax/SyntaxN3.php";
include RDFAPI_INCLUDE_DIR . "syntax/SyntaxRDF.php";
include S3DB_SERVER_ROOT . '/s3dbcore/rdf.resources.inc.php';
include S3DB_SERVER_ROOT . '/rdfheader.inc.php';
extract($resources);
#Create an RDF model from the raw data
#echo "Parsing the RDF data".chr(10);
if (!is_file($file . '_model') || $inputs['clean'] == 1) {
#$model = ntriples2php($data); ##=> Crashing when the model is too big :-( :-(
if (filesize($fileclean) < 20000) {
$model = ntriples2php($data);
} else {
#For big files, use the big file library ( which actually is smaller..)
$model = arc_ntriples2php($fileclean);
$m = ModelFactory::getDefaultModel();
if (empty($model)) {
echo "Your file could not be parsed.";
exit;
}
foreach ($model as $triple) {
$mS = new Resource($triple['s']);
$mP = new Resource($triple['p']);
$mO = $triple['o_type'] == 'literal' ? new Literal($triple['o']) : new Resource($triple['o']);
$s = new Statement($mS, $mP, $mO);
$m->add($s);
}
$model = $m;
}
if (!empty($model)) {
unlink($fileclean);
} else {
echo "Your file seems to be empty.";
exit;
}
$tmp = serialize($model);
file_put_contents($file . '_model', $tmp);
} else {
$model = unserialize(file_get_contents($file . '_model'));
}
#Create an S3DB model from the RDF model
#echo "Building and S3DB structure from the RDF data".chr(10).chr(13);
if (!is_file($file . '_s3db') || $inputs['clean'] == 1) {
$s3db = model2deploy($model, $resources, $root, $inData);
#$s3db = arc_model2deploy($model, $resources, $root, $inData);
$tmp = serialize($s3db);
file_put_contents($file . '_s3db', $tmp);
} else {
$s3db = unserialize(file_get_contents($file . '_s3db'));
}
#include('rdfWrite.php');
return $s3db;
}
$simileLink = 'http://simile.mit.edu/babel/translator?reader=n3&writer=rdf-xml&mimetype=text%2Fplain&url=' . $filelink;
$simile = @fopen($simileLink, 'r');
if (!$simile) {
echo "Could not connect to the rdf conversion service (http://simile.mit.edu/babel), please make sure you are connected to the internet.";
exit;
}
$translation = stream_get_contents($simile);
if (ereg('<html>', $translation)) {
echo "Simile could not convert the file. Please copy the triples on this <a href='" . $filelink . "'>direct link</a> and submit it to <a href='http://simile.mit.edu/babel'>simile</a> for a conversion in your format of choice.";
exit;
}
switch ($inputs['output']) {
case 'rdf-xml':
##Convert the n3 to a model; convert that model into rdf
include_once S3DB_SERVER_ROOT . '/rdfheader.inc.php';
$model = ntriples2php($n3);
$model->saveAs(S3DB_SERVER_ROOT . '/tmp/' . str_replace('.n3', '.rdf', $linkname), 'RDF');
$filelink = str_replace('.n3', '.rdf', $filelink);
$simileLink = 'http://simile.mit.edu/babel/translator?reader=n3&writer=rdf-xml&mimetype=text%2Fplain&url=' . $filelink;
break;
case 'json':
$filelink = str_replace('.n3', '.json', $filelink);
$simileLink = 'http://simile.mit.edu/babel/translator?reader=n3&writer=exhibit-json&mimetype=text%2Fplain&url=' . $filelink;
break;
default:
$filelink = str_replace('.n3', '.rdf', $filelink);
$simileLink = 'http://simile.mit.edu/babel/translator?reader=n3&writer=rdf-xml&mimetype=text%2Fplain&url=' . $filelink;
break;
}
$simile = @fopen($simileLink, 'r');
$translation = stream_get_contents($simile);