public static HostAndPort fromString()

in folsom/src/main/java/com/spotify/folsom/guava/HostAndPort.java [167:204]

31 lines of code
6 McCabe index (conditional complexity)


  public static HostAndPort fromString(String hostPortString) {
    requireNonNull(hostPortString);
    String host;
    String portString = null;
    boolean hasBracketlessColons = false;

    if (hostPortString.startsWith("[")) {
      String[] hostAndPort = getHostAndPortFromBracketedHost(hostPortString);
      host = hostAndPort[0];
      portString = hostAndPort[1];
    } else {
      int colonPos = hostPortString.indexOf(':');
      if (colonPos >= 0 && hostPortString.indexOf(':', colonPos + 1) == -1) {
        // Exactly 1 colon.  Split into host:port.
        host = hostPortString.substring(0, colonPos);
        portString = hostPortString.substring(colonPos + 1);
      } else {
        // 0 or 2+ colons.  Bare hostname or IPv6 literal.
        host = hostPortString;
        hasBracketlessColons = (colonPos >= 0);
      }
    }

    int port = NO_PORT;
    if (!Strings.isNullOrEmpty(portString)) {
      // Try to parse the whole port string as a number.
      // JDK7 accepts leading plus signs. We don't want to.
      checkArgument(!portString.startsWith("+"), "Unparseable port number: %s", hostPortString);
      try {
        port = Integer.parseInt(portString);
      } catch (NumberFormatException e) {
        throw new IllegalArgumentException("Unparseable port number: " + hostPortString);
      }
      checkArgument(isValidPort(port), "Port number out of range: %s", hostPortString);
    }

    return new HostAndPort(host, port, hasBracketlessColons);
  }