private function generateStructureArray($file) {
    $splitData = explode('/', $file);

    switch(count($splitData)) {
    case 1:
        $this->hierarchy[] = $splitData[0];
        break;
    case 2:
        $this->hierarchy[$splitData[0]][] = $splitData[1];
        break;
    case 3:
        $this->hierarchy[$splitData[0]][$splitData[1]][] = $splitData[2];
        break;
    case 4:
        $this->hierarchy[$splitData[0]][$splitData[1]][$splitData[2]][] = $splitData[3];
        break;
    case 5:
        $this->hierarchy[$splitData[0]][$splitData[1]][$splitData[2]][$splitData[3]][] = $splitData[4];
        break;
}