php
$path = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
$params = $_GET;
$target = "";

// utils
function delAndGetQuery($delArray){
    $params = $_GET;
    foreach ($delArray as $key) {
        unset($params[$key]);
    }
    return http_build_query($params);
}

// 跳转

if (preg_match('#^/([A-z-]+/)?blu-ray-cinavia-removal-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}blu-ray-cinavia-removal" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?video-converter-ultimate-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}video-converter-ultimate" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?video-converter-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}video-converter" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?tunescopy-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}tunescopy" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?tunes-cleaner-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}tunes-cleaner" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?photoins-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}photoins" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?photo-enhancer-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}photo-enhancer" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?music-recorder-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}music-recorder" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?itransfer-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}itransfer" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

if (preg_match('#^/([A-z-]+/)?ios-data-recovery-mac((?:/(.*))|/)?$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}ios-data-recovery" . ($matches[2] ?? '') . '?sys=mac' . ($query ? '&'.$query : '');
}

#####
if (preg_match('#^/jp/video-converter-mac/user-guide.html$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}video-converter/user-guide.html?sys=mac" . ($query ? '&'.$query : '');
}

if (preg_match('#^/jp/video-converter-ultimate-mac/user-guide.html$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}video-converter-ultimate/user-guide.html?sys=mac" . ($query ? '&'.$query : '');
}

if (preg_match('#^/jp/blu-ray-cinavia-removal-mac/user-guide.html$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}blu-ray-cinavia-removal/user-guide.html?sys=mac" . ($query ? '&'.$query : '');
}

if (preg_match('#^/jp/blu-ray-cinavia-removal-mac/tech-spec.html$#', $path, $matches)) {
    $query = delAndGetQuery(['sys']);
    $target = "/{$matches[1]}blu-ray-cinavia-removal/tech-spec.html?sys=mac" . ($query ? '&'.$query : '');
}


// 返回
if($target !== '') {
    header('HTTP/1.1 301 Moved Permanently');
    header('Location: ' . $target);
    exit;
}

http_response_code(404);
echo '404 Not Found';
exit;