/**
* @desc Updates the derivations of a wwquestion.
* @param integer $wwquestionid The derivation to update.
* @return boolean true
*/
function _update_derivations($wwquestionid)
{
global $CFG;
//retrieve the new records
$newrecordset = webwork_qtype::_derivations();
//retrieve the old records
$oldrecordset = get_records('question_webwork_derived', 'question_webwork', $wwquestionid);
//records that we will have
$therecordset = array();
//load in the new ones (by seed)
foreach ($newrecordset as $newrecord) {
unset($temprecord);
//assign parentid
$temprecord->question_webwork = $wwquestionid;
//copy data
$temprecord->seed = $newrecord['seed'];
$temprecord->html = $newrecord['output'];
$therecordset[$temprecord->seed] = $temprecord;
}
//overwrite IDs with old IDs if seeds match
if (isset($oldrecordset)) {
//stuff that exists and might be updatable
foreach ($oldrecordset as $oldrecord) {
//do we have an old seed that matches new seeds
$oldseed = $oldrecord->seed;
if (isset($therecordset[$oldseed]) && $therecordset[$oldseed] != null) {
//found a seed that already exists, make sure it goes into the old ID
$therecordset[$oldseed]->id = $oldrecord->id;
} else {
//didnt find a seed that exists, delete the old record
$derivationid = $oldrecord->id;
webwork_delete_derivation_db($derivationid);
webwork_delete_derivation_dir($wwquestionid, $derivationid);
}
}
}
//update or insert into database
foreach ($therecordset as $record) {
//initial insert to get the ID when necessary
if (!isset($record->id)) {
unset($record->id);
$result = insert_record('question_webwork_derived', $record);
if (!$result) {
print_error('DB opertaion failed');
}
$record->id = $result;
}
//makes the derivation directory
webwork_make_derivation_dir($wwquestionid, $record->id);
webwork_parse_change_derivation($record);
//updates record
$err = update_record('question_webwork_derived', $record);
if (!$err) {
print_error('DB error on updating question_webwork_derived');
}
}
return true;
}
function webwork_codecheck($data, $wwquestionid, $questioncopy)
{
//codechecklevel
$codechecklevel = $data['codecheck'];
//here we construct a temp question object
$question = new stdClass();
$question->code = base64_encode(stripslashes($data['code']));
$question->seed = $data['seed'];
$question->trials = $data['trials'];
//handle the new question from old functionality
if ($questioncopy) {
webwork_make_tmp_dir();
$path = webwork_get_wwquestion_path_full($wwquestionid);
$filelist = list_directories_and_files($path);
//copy everthing but derivations folder into tmp folder
foreach ($filelist as $file) {
if ($file != 'derivations') {
webwork_copy_file("{$path}/{$file}", webwork_get_tmp_path_full() . '/' . $file);
}
}
}
//should we look in tmp or in wwquestion dir to find stuff
if (!isset($wwquestionid)) {
$path = webwork_get_tmp_path_full();
$urlpath = webwork_get_filehandler_path() . '/' . webwork_get_tmp_path() . '/';
} else {
$path = webwork_get_wwquestion_path_full($this->question->webworkid);
$urlpath = webwork_get_filehandler_path() . '/' . webwork_get_wwquestion_path($this->question->webworkid) . '/';
}
$filelist = list_directories_and_files($path);
$filearray = array();
//files that need to be pushed
foreach ($filelist as $file) {
if (!is_dir($path . '/' . $file)) {
$encode = base64_encode($urlpath . '/' . $file);
array_push($filearray, $encode);
}
}
$question->files = $filearray;
//one call to the server will return response for this code and keep it static in the function
$results = webwork_get_derivations($question);
//filter errors and warnings
$errorresults = array();
$noerrorresults = array();
$warningresults = array();
$goodresults = array();
foreach ($results as $record) {
if (isset($record['errors']) && $record['errors'] != '' && $record['errors'] != null) {
array_push($errorresults, $record);
} else {
array_push($noerrorresults, $record);
}
}
foreach ($noerrorresults as $record) {
if (isset($record['warnings']) && $record['warnings'] != '' && $record['warnings'] != null) {
array_push($warningresults, $record);
} else {
array_push($goodresults, $record);
}
}
switch ($codechecklevel) {
//No code check
case 0:
webwork_qtype::_derivations($results);
return true;
break;
//reject seeds with errors
//reject seeds with errors
case 1:
if (count($noerrorresults) > 0) {
webwork_qtype::_derivations($noerrorresults);
return true;
}
break;
//reject if errors
//reject if errors
case 2:
if (count($noerrorresults) == count($results)) {
webwork_qtype::_derivations($results);
return true;
}
break;
//reject seeds with errors or warnings
//reject seeds with errors or warnings
case 3:
if (count($goodresults) > 0) {
webwork_qtype::_derivations($goodresults);
return true;
}
break;
//reject if errors or warnings
//reject if errors or warnings
case 4:
if (count($goodresults) == count($results)) {
webwork_qtype::_derivations($results);
return true;
}
break;
}
$errormsgs = array();
$warningmsgs = array();
//at this point we are going to be invalid
//this correlates seeds with certain error messages for better output
//ERRORS
foreach ($errorresults as $record) {
$found = 0;
$candidate = $record['errors'] . "<br>";
$candidateseed = $record['seed'];
for ($i = 0; $i < count($errormsgs); $i++) {
if ($candidate == $errormsgs[$i]['errors']) {
$found = 1;
$errormsgs[$i]['seeds'][] = $candidateseed;
}
}
if ($found == 0) {
//new error message
$msg = array();
$msg['errors'] = $candidate;
$msg['seeds'] = array();
$msg['seeds'][] = $candidateseed;
$errormsgs[] = $msg;
}
}
//WARNINGS
foreach ($warningresults as $record) {
$found = 0;
$candidate = $record['warnings'] . "<br>";
$candidateseed = $record['seed'];
for ($i = 0; $i < count($warningmsgs); $i++) {
if ($candidate == $warningmsgs[$i]['errors']) {
$found = 1;
$warningmsgs[$i]['seeds'][] = $candidateseed;
}
}
if ($found == 0) {
//new error message
$msg = array();
$msg['warnings'] = $candidate;
$msg['seeds'] = array();
$msg['seeds'][] = $candidateseed;
$warningmsgs[] = $msg;
}
}
$output = "Errors in PG Code on: " . count($errorresults) . " out of " . count($results) . " seeds tried:<br>";
//construct error statement
$counter = 1;
foreach ($errormsgs as $msg) {
$output .= "{$counter}) ";
$output .= "Seeds (";
foreach ($msg['seeds'] as $seed) {
$output .= $seed . " ";
}
$output .= ") gave Errors:" . $msg['errors'] . "<br><br>";
$counter++;
}
$output .= "Warnings in PG Code on: " . count($warningresults) . " out of " . count($results) . " seeds tried:<br>";
$counter = 1;
foreach ($warningmsgs as $msg) {
$output .= "{$counter}) ";
$output .= "Seeds (";
foreach ($msg['seeds'] as $seed) {
$output .= $seed . " ";
}
$output .= ") gave Warnings:" . $msg['warnings'] . "<br><br>";
$counter++;
}
$returner = array();
$returner['code'] = $output;
return $returner;
}
