Chumper\Zipper\Zipper::addDir PHP Method

    private function addDir($pathToDir)
    {
        // First go over the files in this directory and add them to the repository.
        foreach ($this->file->files($pathToDir) as $file) {
            $this->addFile($pathToDir . '/' . basename($file));
        }
        // Now let's visit the subdirectories and add them, too.
        foreach ($this->file->directories($pathToDir) as $dir) {
            $old_folder = $this->currentFolder;
            $this->currentFolder = empty($this->currentFolder) ? basename($dir) : $this->currentFolder . '/' . basename($dir);
            $this->addDir($pathToDir . '/' . basename($dir));
            $this->currentFolder = $old_folder;
        }
    }