/**
* Does this file exist in any of the current files supported by this plugin for this user?
*
* @param assign $assignment - The assignment instance
* @param stdClass $user The user matching this uploaded file
* @param assign_plugin $plugin The matching plugin from the filename
* @param string $filename The parsed filename from the zip
* @param stored_file $fileinfo The info about the extracted file from the zip
* @return bool - True if the file has been modified or is new
*/
public function is_file_modified($assignment, $user, $plugin, $filename, $fileinfo) {
$sg = null;
if ($plugin->get_subtype() == 'assignsubmission') {
$sg = $assignment->get_user_submission($user->id, false);
} else if ($plugin->get_subtype() == 'assignfeedback') {
$sg = $assignment->get_user_grade($user->id, false);
} else {
return false;
}
if (!$sg) {
return true;
}
foreach ($plugin->get_files($sg, $user) as $pluginfilename => $file) {
if ($pluginfilename == $filename) {
// Extract the file and compare hashes.
$contenthash = '';
if (is_array($file)) {
$content = reset($file);
$contenthash = sha1($content);
} else {
$contenthash = $file->get_contenthash();
}
if ($contenthash != $fileinfo->get_contenthash()) {
return true;
} else {
return false;
}
}
}
return true;
}
