Uri? _tryParseScpUri()

in lib/src/dependency.dart [153:180]

• 20 lines of code
• 7 McCabe index (conditional complexity)

Uri? _tryParseScpUri(String value) {
  final colonIndex = value.indexOf(':');

  if (colonIndex < 0) {
    return null;
  } else if (colonIndex == value.indexOf('://')) {
    // If the first colon is part of a scheme, it's not an scp-like URI
    return null;
  }
  final slashIndex = value.indexOf('/');

  if (slashIndex >= 0 && slashIndex < colonIndex) {
    // Per docs: This syntax is only recognized if there are no slashes before
    // the first colon. This helps differentiate a local path that contains a
    // colon. For example the local path foo:bar could be specified as an
    // absolute path or ./foo:bar to avoid being misinterpreted as an ssh url.
    return null;
  }

  final atIndex = value.indexOf('@');
  if (colonIndex > atIndex) {
    final user = atIndex >= 0 ? value.substring(0, atIndex) : null;
    final host = value.substring(atIndex + 1, colonIndex);
    final path = value.substring(colonIndex + 1);
    return Uri(scheme: 'ssh', userInfo: user, host: host, path: path);
  }
  return null;
}