function wfRdfSpecialPage($par)
{
global $wgRequest, $wgOut, $_SERVER, $_REQUEST;
MwRdf::setup();
$target = $wgRequest->getVal('target');
if (!isset($target) || $target == null) {
# no target parameter
MwRdf::ShowForm();
return;
}
if (strlen($target) == 0) {
# no target contents
MwRdf::ShowForm(wfMsg('badtitle'));
return;
}
$nt = Title::newFromText($target);
if ($nt->getArticleID() == 0) {
# not an article
MwRdf::ShowForm(wfMsg('badtitle'));
return;
}
$format = $wgRequest->getVal('format', 'rdfxml');
$accept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : null;
$rdftype = wfNegotiateType(wfAcceptToPrefs($accept), wfAcceptToPrefs(MwRdf::getTypePrefs($format)));
if (!$rdftype) {
wfHttpError(406, "Not Acceptable", wfMsg("notacceptable"));
return false;
}
$wgOut->disable();
if (!headers_sent()) {
header("Content-type: {$rdftype}");
}
$wgOut->sendCacheControl();
$mf = MwRdf::ModelingAgent($nt);
# Note: WebRequest chokes on arrays here
$modelnames = null;
if (isset($_REQUEST['modelnames'])) {
$modelnames = $_REQUEST['modelnames'];
}
if (is_null($modelnames)) {
$modelnames = $mf->listDefaultModels();
}
if (is_string($modelnames)) {
$modelnames = explode(',', $modelnames);
}
if (!$modelnames) {
MwRdf::ShowForm(wfMsg('nomodelsselected'));
return;
}
$model = $mf->retrieveModel($modelnames);
if (!$model->current()) {
$mf->storeAllModels();
$model = $mf->retrieveModel($modelnames);
}
$ser = MwRdf::Serializer($format);
$text = $model->serializeStatements($ser);
# XXX: Test Hook: it would be better if we could capture the
# print statement below with an output buffer, but that is
# disabled for the CLI in PHP 5
if (isset($_SERVER['CONTEXT']) && $_SERVER['CONTEXT'] == 'phpunit test') {
return $text;
} else {
print $text;
return true;
}
}