/**
* initilizes the rex_config class.
*/
protected static function init()
{
if (self::$initialized) {
return;
}
define('REX_CONFIG_FILE_CACHE', rex_path::coreCache('config.cache'));
// take care, so we are able to write a cache file on shutdown
// (check here, since exceptions in shutdown functions are not visible to the user)
$dir = dirname(REX_CONFIG_FILE_CACHE);
rex_dir::create($dir);
if (!is_writable($dir)) {
throw new rex_exception('rex-config: cache dir "' . dirname(REX_CONFIG_FILE_CACHE) . '" is not writable!');
}
// save cache on shutdown
register_shutdown_function([__CLASS__, 'save']);
self::load();
self::$initialized = true;
}