protected function getPluginNames($makefile)
    {
        $mkdata = file_get_contents($makefile);

        preg_match(
            '/bootstrap(\:|\/js\/\*\.js: js\/\*\.js)\s?\n(\n|.)*?((cat\s)(?P<files>.*?))\s>/i',
            $mkdata, $matches
        );

        return array_map(function ($value) {
            return preg_replace('/(js\/bootstrap-([\w_-]+)\.js)/', '\2', $value);
        }, preg_split('/\s+/', $matches['files']));
    }