protected function to_html(ImsXmlReader $item)
{
$xml = $item->get_xml();
$variables = $item->all_printedVariable();
foreach ($variables as $var) {
$var_xml = $var->get_xml();
$name = '{' . $var->identifier . '}';
$xml = str_replace($var_xml, $name, $xml);
}
$xml = '<?xml version="1.0" encoding="UTF-8" ?>' . $xml;
$item = new ImsQtiReader();
$item->load_xml($xml);
$result = parent::to_html($item);
return $result;
}
public function get_entries(ImsQtiReader $item, ImsQtiReader $interaction)
{
$result = array();
$sets = $interaction->list_simpleMatchSet();
if (count($sets) == 0) {
//associateInteraction
$questions = $this->get_choices($interaction);
$answers = array_merge($questions);
} else {
if (count($sets) == 1) {
//should not be the case
$questions = $this->get_choices($sets[0]);
$answers = array_merge($questions);
} else {
//matchInteraction
$questions = $this->get_choices($sets[0]);
$answers = $this->get_choices($sets[1]);
}
}
$done = array();
$responses = $this->get_correct_responses($item, $interaction);
foreach ($responses as $response) {
$pair = explode(' ', $response);
$question = isset($questions[$pair[0]]) ? $questions[$pair[0]] : null;
$answer = isset($answers[$pair[1]]) ? $answers[$pair[1]] : null;
if (!empty($question)) {
$result[] = $this->create_entry($question, $answer);
$done[$pair[1]] = $pair[1];
}
}
foreach ($answers as $key => $answer) {
if (!isset($done[$key])) {
$result[] = $this->create_entry(null, $answer);
}
}
return $result;
}
protected function is_question_file($path)
{
$name = basename($path);
$ext = pathinfo($path, PATHINFO_EXTENSION);
if (empty($ext) || $ext != 'xml' || self::IMS_MANIFEST_NAME == $name) {
return false;
}
$reader = new ImsQtiReader();
$reader->load($path);
return count($reader->query('/def:assessmentItem')) > 0;
}