Flow\Loader::normalizePath PHP Method

    public function normalizePath($path)
    {
        $path = preg_replace('#/{2,}#', '/', strtr($path, '\\', '/'));
        $parts = array();
        foreach (explode('/', $path) as $i => $part) {
            if ($part === '..') {
                if (!empty($parts)) {
                    array_pop($parts);
                }
            } elseif ($part !== '.') {
                $parts[] = $part;
            }
        }
        return $parts;
    }