function create($description)
{
global $addslashes, $moduleFactory;
if ($this->getNumAvailable() >= AT_COURSE_BACKUPS) {
return FALSE;
}
$timestamp = time();
$zipfile = new zipfile();
$package_identifier = VERSION . "\n\n\n" . 'Do not change the first line of this file it contains the ATutor version this backup was created with.';
$zipfile->add_file($package_identifier, 'atutor_backup_version', $timestamp);
// backup course properties. ONLY BANNER FOR NOW.
require_once AT_INCLUDE_PATH . 'classes/CSVExport.class.php';
$CSVExport = new CSVExport();
$now = time();
$sql = 'SELECT banner
FROM ' . TABLE_PREFIX . 'courses
WHERE course_id=' . $this->course_id;
$properties = $CSVExport->export($sql, $course_id);
$zipfile->add_file($properties, 'properties.csv', $now);
// backup modules
$modules = $moduleFactory->getModules(AT_MODULE_STATUS_ENABLED | AT_MODULE_STATUS_DISABLED);
$keys = array_keys($modules);
foreach ($keys as $module_name) {
$module =& $modules[$module_name];
$module->backup($this->course_id, $zipfile);
}
$zipfile->close();
$system_file_name = md5($timestamp);
if (!is_dir(AT_BACKUP_DIR)) {
@mkdir(AT_BACKUP_DIR);
}
if (!is_dir(AT_BACKUP_DIR . $this->course_id)) {
@mkdir(AT_BACKUP_DIR . $this->course_id);
}
$zipfile->write_file(AT_BACKUP_DIR . $this->course_id . DIRECTORY_SEPARATOR . $system_file_name . '.zip');
$row['description'] = $addslashes($description);
$row['contents'] = addslashes(serialize($table_counters));
$row['system_file_name'] = $system_file_name;
$row['file_size'] = $zipfile->get_size();
$row['file_name'] = $this->generateFileName();
$this->add($row);
return TRUE;
}
/**
* Backup this module for a given course
* @access public
* @param int $course_id ID of the course to backup
* @param object $zipfile a reference to a zipfile object
* @author Joel Kronenberg
*/
function backup($course_id, &$zipfile)
{
static $CSVExport;
if (!isset($CSVExport)) {
require_once AT_INCLUDE_PATH . 'classes/CSVExport.class.php';
$CSVExport = new CSVExport();
}
$now = time();
if ($this->isBackupable()) {
require $this->_module_path . $this->_directoryName . '/module_backup.php';
if (isset($sql)) {
foreach ($sql as $file_name => $table_sql) {
$content = $CSVExport->export($table_sql, $course_id);
if ($content) {
$zipfile->add_file($content, $file_name . '.csv', $now);
}
}
}
if (isset($dirs)) {
foreach ($dirs as $dir => $path) {
$path = str_replace('?', $course_id, $path);
$zipfile->add_dir($path, $dir);
}
}
}
}
