Future findPackageConfigUri()

in lib/src/discovery.dart [56:93]

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

Future<PackageConfig?> findPackageConfigUri(
    Uri location,
    Future<Uint8List?> Function(Uri uri)? loader,
    void Function(Object error) onError,
    bool recursive) async {
  if (location.isScheme('package')) {
    onError(PackageConfigArgumentError(
        location, 'location', 'Must not be a package: URI'));
    return null;
  }
  if (loader == null) {
    if (location.isScheme('file')) {
      return findPackageConfig(
          Directory.fromUri(location.resolveUri(currentPath)),
          recursive,
          onError);
    }
    loader = defaultLoader;
  }
  if (!location.path.endsWith('/')) location = location.resolveUri(currentPath);
  while (true) {
    var file = location.resolveUri(packageConfigJsonPath);
    var bytes = await loader(file);
    if (bytes != null) {
      return parsePackageConfigBytes(bytes, file, onError);
    }
    file = location.resolveUri(dotPackagesPath);
    bytes = await loader(file);
    if (bytes != null) {
      return packages_file.parse(bytes, file, onError);
    }
    if (!recursive) break;
    var parent = location.resolveUri(parentPath);
    if (parent == location) break;
    location = parent;
  }
  return null;
}