/**
* @desc Test creation of a derivation directory
*/
function test_create_derivation_directory()
{
webwork_make_derivation_dir('SIMPLETEST', 'SIMPLETEST');
$path = webwork_get_derivation_path_full('SIMPLETEST', 'SIMPLETEST');
$this->assertEqual(is_dir($path), true, 'Webwork Derivation Directory Test.');
webwork_delete_derivation_dir('SIMPLETEST', 'SIMPLETEST');
}
/**
* @desc Parses a derivation record. This changes all paths of external entities. Copies all external entities to local data folder.
* @param object $derivation The derivation object.
* @return bool true.
*/
function webwork_parse_change_derivation(&$derivation)
{
//webwork question id
$wwquestionid = $derivation->question_webwork;
//assign paths
$wwquestioncopyto = webwork_get_wwquestion_path_full($wwquestionid);
$wwquestionreplacer = webwork_get_wwquestion_url($wwquestionid);
$derivationcopyto = webwork_get_derivation_path_full($wwquestionid, $derivation->id);
$derivationreplacer = webwork_get_derivation_url($wwquestionid, $derivation->id);
$parsedhtml = "";
$html = base64_decode($derivation->html);
$parser = new HtmlParser($html);
while ($parser->parse()) {
if ($parser->iNodeType == NODE_TYPE_ELEMENT) {
$nodename = $parser->iNodeName;
if (strcasecmp($nodename, 'img') == 0) {
//image, path fixing
if (isset($parser->iNodeAttributes['src'])) {
$src = $parser->iNodeAttributes['src'];
if (!(strstr($src, '/tmp/') == false)) {
//image produced by the server
$srccapture = strrchr($src, '/');
webwork_copy_file($src, $derivationcopyto . $srccapture);
$parser->iNodeAttributes['src'] = $derivationreplacer . $srccapture;
}
}
} else {
if (strcasecmp($nodename, 'a') == 0) {
//hyperlink, path fixing
if (isset($parser->iNodeAttributes['href'])) {
$href = $parser->iNodeAttributes['href'];
$hrefcapture = strrchr($href, '/');
webwork_copy_file($href, $derivationcopyto . $hrefcapture);
$parser->iNodeAttributes['href'] = $derivationreplacer . $hrefcapture;
}
}
}
}
$parsedhtml .= $parser->printTag();
}
$derivation->html = base64_encode($parsedhtml);
return true;
}
