Cakephp如何检查其命名约定和文件夹名称？

Where does the cakephp naming conventions (i.e controller name should be CakesController.php i.e end with Controller) and the folder conventions (i.e controller files are from app/Controller folder) are defined . i.e how does cakephp check it. in which file they are defined.

Most of that stuff happens in the Dispatcher with the help of the Router and the Inflector, for instance:

protected function _loadController($request) {
    $pluginName = $pluginPath = $controller = null;
    if (!empty($request->params['plugin'])) {
        $pluginName = $controller = Inflector::camelize($request->params['plugin']);
        $pluginPath = $pluginName . '.';
    }
    if (!empty($request->params['controller'])) {
        $controller = Inflector::camelize($request->params['controller']);
    }
    if ($pluginPath . $controller) {
        $class = $controller . 'Controller';
        App::uses('AppController', 'Controller');
        App::uses($pluginName . 'AppController', $pluginPath . 'Controller');
        App::uses($class, $pluginPath . 'Controller');
        if (class_exists($class)) {
            return $class;
        }
    }
    return false;
}

Source: https://github.com/cakephp/cakephp/blob/master/lib/Cake/Routing/Dispatcher.php#L244

Also see the CakePHP Cookbook explaining a typical request