Uri _computeUrl()

in lib/src/request.dart [311:355]

• 38 lines of code
• 14 McCabe index (conditional complexity)

Uri _computeUrl(Uri requestedUri, String? handlerPath, Uri? url) {
  if (handlerPath != null &&
      handlerPath != requestedUri.path &&
      !handlerPath.endsWith('/')) {
    handlerPath += '/';
  }

  if (url != null) {
    if (url.scheme.isNotEmpty || url.hasAuthority || url.fragment.isNotEmpty) {
      throw ArgumentError('url "$url" may contain only a path and query '
          'parameters.');
    }

    if (!requestedUri.path.endsWith(url.path)) {
      throw ArgumentError('url "$url" must be a suffix of requestedUri '
          '"$requestedUri".');
    }

    if (requestedUri.query != url.query) {
      throw ArgumentError('url "$url" must have the same query parameters '
          'as requestedUri "$requestedUri".');
    }

    if (url.path.startsWith('/')) {
      throw ArgumentError('url "$url" must be relative.');
    }

    var startOfUrl = requestedUri.path.length - url.path.length;
    if (url.path.isNotEmpty &&
        requestedUri.path.substring(startOfUrl - 1, startOfUrl) != '/') {
      throw ArgumentError('url "$url" must be on a path boundary in '
          'requestedUri "$requestedUri".');
    }

    return url;
  } else if (handlerPath != null) {
    return Uri(
        path: requestedUri.path.substring(handlerPath.length),
        query: requestedUri.query);
  } else {
    // Skip the initial "/".
    var path = requestedUri.path.substring(1);
    return Uri(path: path, query: requestedUri.query);
  }
}