/**
* Imports an exercise in QTI format if the XML structure can be found in it
* @param array $file
* @return an array as a backlog of what was really imported, and error or debug messages to display
*/
function import_exercise($file)
{
global $exercise_info;
global $element_pile;
global $non_HTML_tag_to_avoid;
global $record_item_body;
// used to specify the question directory where files could be found in relation in any question
global $questionTempDir;
$archive_path = api_get_path(SYS_ARCHIVE_PATH) . 'qti2';
$baseWorkDir = $archive_path;
if (!is_dir($baseWorkDir)) {
mkdir($baseWorkDir, api_get_permissions_for_new_directories(), true);
}
$uploadPath = '/';
// set some default values for the new exercise
$exercise_info = array();
$exercise_info['name'] = preg_replace('/.zip$/i', '', $file);
$exercise_info['question'] = array();
$element_pile = array();
// create parser and array to retrieve info from manifest
$element_pile = array();
//pile to known the depth in which we are
//$module_info = array (); //array to store the info we need
// if file is not a .zip, then we cancel all
if (!preg_match('/.zip$/i', $file)) {
return 'UplZipCorrupt';
}
// unzip the uploaded file in a tmp directory
if (!get_and_unzip_uploaded_exercise($baseWorkDir, $uploadPath)) {
return 'UplZipCorrupt';
}
// find the different manifests for each question and parse them.
$exerciseHandle = opendir($baseWorkDir);
//$question_number = 0;
$file_found = false;
$operation = false;
$result = false;
$filePath = null;
// parse every subdirectory to search xml question files
while (false !== ($file = readdir($exerciseHandle))) {
if (is_dir($baseWorkDir . '/' . $file) && $file != "." && $file != "..") {
// Find each manifest for each question repository found
$questionHandle = opendir($baseWorkDir . '/' . $file);
while (false !== ($questionFile = readdir($questionHandle))) {
if (preg_match('/.xml$/i', $questionFile)) {
$result = parse_file($baseWorkDir, $file, $questionFile);
$filePath = $baseWorkDir . $file;
$file_found = true;
}
}
} elseif (preg_match('/.xml$/i', $file)) {
// Else ignore file
$result = parse_file($baseWorkDir, '', $file);
$filePath = $baseWorkDir . '/' . $file;
$file_found = true;
}
}
if (!$file_found) {
return 'NoXMLFileFoundInTheZip';
}
if ($result == false) {
return false;
}
$doc = new DOMDocument();
$doc->load($filePath);
$encoding = $doc->encoding;
// 1. Create exercise.
$exercise = new Exercise();
$exercise->exercise = $exercise_info['name'];
$exercise->save();
$last_exercise_id = $exercise->selectId();
if (!empty($last_exercise_id)) {
// For each question found...
foreach ($exercise_info['question'] as $question_array) {
//2. Create question
$question = new Ims2Question();
$question->type = $question_array['type'];
$question->setAnswer();
$question->updateTitle(formatText($question_array['title']));
//$question->updateDescription($question_array['title']);
$type = $question->selectType();
$question->type = constant($type);
$question->save($last_exercise_id);
$last_question_id = $question->selectId();
//3. Create answer
$answer = new Answer($last_question_id);
$answer->new_nbrAnswers = count($question_array['answer']);
$totalCorrectWeight = 0;
foreach ($question_array['answer'] as $key => $answers) {
$split = explode('_', $key);
$i = $split[1];
// Answer
$answer->new_answer[$i] = formatText($answers['value']);
// Comment
$answer->new_comment[$i] = isset($answers['feedback']) ? formatText($answers['feedback']) : null;
// Position
$answer->new_position[$i] = $i;
// Correct answers
if (in_array($key, $question_array['correct_answers'])) {
$answer->new_correct[$i] = 1;
} else {
$answer->new_correct[$i] = 0;
}
$answer->new_weighting[$i] = $question_array['weighting'][$key];
if ($answer->new_correct[$i]) {
$totalCorrectWeight = $answer->new_weighting[$i];
}
}
$question->updateWeighting($totalCorrectWeight);
$question->save($last_exercise_id);
$answer->save();
}
// delete the temp dir where the exercise was unzipped
my_delete($baseWorkDir . $uploadPath);
return $last_exercise_id;
}
return false;
}
/**
* main function to import an exercise,
*
* @return an array as a backlog of what was really imported, and error or debug messages to display
*/
function import_exercise($file)
{
global $exercise_info;
global $element_pile;
global $non_HTML_tag_to_avoid;
global $record_item_body;
// used to specify the question directory where files could be found in relation in any question
global $questionTempDir;
$archive_path = api_get_path(SYS_ARCHIVE_PATH) . 'qti2';
$baseWorkDir = $archive_path;
if (!is_dir($baseWorkDir)) {
mkdir($baseWorkDir, api_get_permissions_for_new_directories(), true);
}
$uploadPath = '/';
// set some default values for the new exercise
$exercise_info = array();
$exercise_info['name'] = preg_replace('/.zip$/i', '', $file);
$exercise_info['question'] = array();
$element_pile = array();
// create parser and array to retrieve info from manifest
$element_pile = array();
//pile to known the depth in which we are
//$module_info = array (); //array to store the info we need
// if file is not a .zip, then we cancel all
if (!preg_match('/.zip$/i', $file)) {
Display::display_error_message(get_lang('You must upload a zip file'));
return false;
}
// unzip the uploaded file in a tmp directory
if (!get_and_unzip_uploaded_exercise($baseWorkDir, $uploadPath)) {
Display::display_error_message(get_lang('You must upload a zip file'));
return false;
}
// find the different manifests for each question and parse them.
$exerciseHandle = opendir($baseWorkDir);
//$question_number = 0;
$file_found = false;
$operation = false;
$result = false;
// parse every subdirectory to search xml question files
while (false !== ($file = readdir($exerciseHandle))) {
if (is_dir($baseWorkDir . '/' . $file) && $file != "." && $file != "..") {
//find each manifest for each question repository found
$questionHandle = opendir($baseWorkDir . '/' . $file);
while (false !== ($questionFile = readdir($questionHandle))) {
if (preg_match('/.xml$/i', $questionFile)) {
$result = parse_file($baseWorkDir, $file, $questionFile);
$file_found = true;
}
}
} elseif (preg_match('/.xml$/i', $file)) {
$result = parse_file($baseWorkDir, '', $file);
$file_found = true;
}
// else ignore file
}
if (!$file_found) {
Display::display_error_message(get_lang('No XML file found in the zip'));
return false;
}
if ($result == false) {
return false;
}
//add exercise in tool
//1.create exercise
$exercise = new Exercise();
$exercise->exercise = $exercise_info['name'];
$exercise->save();
$last_exercise_id = $exercise->selectId();
if (!empty($last_exercise_id)) {
//For each question found...
foreach ($exercise_info['question'] as $key => $question_array) {
//2.create question
$question = new Ims2Question();
$question->type = $question_array['type'];
$question->setAnswer();
$question->updateTitle($question_array['title']);
// question ...
$type = $question->selectType();
$question->type = constant($type);
// type ...
$question->save($last_exercise_id);
// save computed grade
$last_question_id = $question->selectId();
//3.create answer
$answer = new Answer($last_question_id);
$answer->new_nbrAnswers = count($question_array['answer']);
foreach ($question_array['answer'] as $key => $answers) {
$split = explode('_', $key);
$i = $split[1];
$answer->new_answer[$i] = $answers['value'];
// answer ...
$answer->new_comment[$i] = $answers['feedback'];
// comment ...
$answer->new_position[$i] = $i;
// position ...
// correct answers ...
if (in_array($key, $question_array['correct_answers'])) {
$answer->new_correct[$i] = 1;
} else {
$answer->new_correct[$i] = 0;
}
$answer->new_weighting[$i] = $question_array['weighting'][$key];
}
$answer->save();
}
// delete the temp dir where the exercise was unzipped
FileManager::my_delete($baseWorkDir . $uploadPath);
$operation = true;
}
return $operation;
}