function load_questions($category, $importfilename, $contextid)
{
// Load all the questions from the given import file into the given category
// The category from the import file will be ignored if present.
global $COURSE;
$qformat = new qformat_xml();
$qformat->setCategory($category);
$systemcontext = context::instance_by_id($contextid);
$contexts = new question_edit_contexts($systemcontext);
$qformat->setContexts($contexts->having_one_edit_tab_cap('import'));
$qformat->setCourse($COURSE);
$qformat->setFilename($importfilename);
$qformat->setRealfilename($importfilename);
$qformat->setMatchgrades('error');
$qformat->setCatfromfile(false);
$qformat->setContextfromfile(false);
$qformat->setStoponerror(true);
// Do anything before that we need to
if (!$qformat->importpreprocess()) {
throw new coding_exception('Upgrade failed: error preprocessing prototype upload');
}
// Process the given file
if (!$qformat->importprocess($category)) {
throw new coding_exception('Upgrade failed: error uploading prototype questions');
}
// In case anything needs to be done after
if (!$qformat->importpostprocess()) {
throw new coding_exception('Upgrade failed: error postprocessing prototype upload');
}
}