/**
* Finds handlers in this Parser's directory.
*/
protected static function find_handlers()
{
$class_info = Library::get_class_info(get_called_class());
$handler_namespace = $class_info['namespace'] . '\\handlers';
foreach (scandir(Library::directory_from_namespace($handler_namespace)) as $file_name) {
if ($file_name[0] == '.') {
continue;
}
$handler = $handler_namespace . '\\' . Library::class_name_from_file_name($file_name);
$trigger = $handler::trigger();
if (!$trigger) {
continue;
}
if (is_array($trigger)) {
foreach ($trigger as $_trigger) {
static::$handlers[$_trigger] = $handler;
}
} else {
static::$handlers[$trigger] = $handler;
}
}
if (empty(static::$handlers)) {
throw new Exception('Sanity error: there are no handlers');
}
uksort(static::$handlers, function ($a, $b) {
if (strlen($a) < strlen($b)) {
return 1;
}
if (strlen($a) == strlen($b)) {
return 0;
}
if (strlen($a) > strlen($b)) {
return -1;
}
});
}