Current Path : C:/xampp/htdocs/moodle/backup/converter/imscc1/ |
Current File : C:/xampp/htdocs/moodle/backup/converter/imscc1/lib.php |
<?php /** * Provides Common Cartridge v1 converter class * * @package core * @subpackage backup-convert * @copyright 2011 Darko Miletic <dmiletic@moodlerooms.com> * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ require_once($CFG->dirroot.'/backup/converter/convertlib.php'); require_once($CFG->dirroot.'/backup/cc/includes/constants.php'); require_once($CFG->dirroot.'/backup/cc/cc2moodle.php'); require_once($CFG->dirroot.'/backup/cc/validator.php'); class imscc1_converter extends base_converter { /** * Log a message * * @see parent::log() * @param string $message message text * @param int $level message level {@example backup::LOG_WARNING} * @param null|mixed $a additional information * @param null|int $depth the message depth * @param bool $display whether the message should be sent to the output, too */ public function log($message, $level, $a = null, $depth = null, $display = false) { parent::log('(imscc1) '.$message, $level, $a, $depth, $display); } /** * Detects the Common Cartridge 1.0 format of the backup directory * * @param string $tempdir the name of the backup directory * @return null|string backup::FORMAT_IMSCC1 if the Common Cartridge 1.0 is detected, null otherwise */ public static function detect_format($tempdir) { $filepath = make_backup_temp_directory($tempdir, false); if (!is_dir($filepath)) { throw new convert_helper_exception('tmp_backup_directory_not_found', $filepath); } $manifest = cc2moodle::get_manifest($filepath); if (!empty($manifest)) { // Looks promising, lets load some information. $handle = fopen($manifest, 'r'); $xml_snippet = fread($handle, 1024); fclose($handle); // Check if it has the required strings. $xml_snippet = strtolower($xml_snippet); $xml_snippet = preg_replace('/\s*/m', '', $xml_snippet); $xml_snippet = str_replace("'", '', $xml_snippet); $xml_snippet = str_replace('"', '', $xml_snippet); $search_string = "xmlns=http://www.imsglobal.org/xsd/imscc/imscp_v1p1"; if (strpos($xml_snippet, $search_string) !== false) { return backup::FORMAT_IMSCC1; } } return null; } /** * Returns the basic information about the converter * * The returned array must contain the following keys: * 'from' - the supported source format, eg. backup::FORMAT_MOODLE1 * 'to' - the supported target format, eg. backup::FORMAT_MOODLE * 'cost' - the cost of the conversion, non-negative non-zero integer */ public static function description() { return array( 'from' => backup::FORMAT_IMSCC1, 'to' => backup::FORMAT_MOODLE1, 'cost' => 10 ); } protected function execute() { global $CFG; $manifest = cc2moodle::get_manifest($this->get_tempdir_path()); if (empty($manifest)) { throw new imscc1_convert_exception('No Manifest detected!'); } $this->log('validating manifest', backup::LOG_DEBUG, null, 1); $validator = new manifest10_validator($CFG->dirroot . '/backup/cc/schemas'); if (!$validator->validate($manifest)) { $this->log('validation error(s): '.PHP_EOL.error_messages::instance(), backup::LOG_DEBUG, null, 2); throw new imscc1_convert_exception(error_messages::instance()->to_string(true)); } $manifestdir = dirname($manifest); $cc2moodle = new cc2moodle($manifest); if ($cc2moodle->is_auth()) { throw new imscc1_convert_exception('protected_cc_not_supported'); } $status = $cc2moodle->generate_moodle_xml(); // Final cleanup. $xml_error = new libxml_errors_mgr(true); $mdoc = new DOMDocument(); $mdoc->preserveWhiteSpace = false; $mdoc->formatOutput = true; $mdoc->validateOnParse = false; $mdoc->strictErrorChecking = false; if ($mdoc->load($manifestdir.'/moodle.xml', LIBXML_NONET)) { $mdoc->save($this->get_workdir_path().'/moodle.xml', LIBXML_NOEMPTYTAG); } else { $xml_error->collect(); $this->log('validation error(s): '.PHP_EOL.error_messages::instance(), backup::LOG_DEBUG, null, 2); throw new imscc1_convert_exception(error_messages::instance()->to_string(true)); } // Move the files to the workdir. rename($manifestdir.'/course_files', $this->get_workdir_path().'/course_files'); } } /** * Exception thrown by this converter */ class imscc1_convert_exception extends convert_exception { }