public static void main()

in zeppelin-zengine/src/main/java/org/apache/zeppelin/interpreter/install/InstallInterpreter.java [213:292]
74 lines of code
22 McCabe index (conditional complexity)

  public static void main(String [] args) throws IOException {
    if (args.length == 0) {
      usage();
      return;
    }

    ZeppelinConfiguration zConf = ZeppelinConfiguration.load();
    InstallInterpreter installer = new InstallInterpreter(
        new File(zConf.getInterpreterListPath()),
        new File(zConf.getInterpreterDir()),
        zConf.getInterpreterLocalRepoPath(),
        zConf);

    String names = null;
    String artifacts = null;
    URL proxyUrl = null;
    String proxyUser = null;
    String proxyPassword = null;
    boolean all = false;

    for (int i = 0; i < args.length; i++) {
      String arg = args[i].toLowerCase(Locale.US);
      switch (arg) {
        case "--list":
        case "-l":
          installer.list();
          System.exit(0);
          break;
        case "--all":
        case "-a":
          all = true;
          break;
        case "--name":
        case "-n":
          names = args[++i];
          break;
        case "--artifact":
        case "-t":
          artifacts = args[++i];
          break;
        case "--version":
        case "-v":
          Util.getVersion();
          break;
        case "--proxy-url":
          proxyUrl = new URL(args[++i]);
          break;
        case "--proxy-user":
          proxyUser = args[++i];
          break;
        case "--proxy-password":
          proxyPassword = args[++i];
          break;
        case "--help":
        case "-h":
          usage();
          System.exit(0);
          break;
        default:
          System.out.println("Unknown option " + arg);
      }
    }

    if (proxyUrl != null) {
      installer.setProxy(proxyUrl, proxyUser, proxyPassword);
    }

    if (all) {
      installer.installAll();
      System.exit(0);
    }

    if (names != null) {
      if (artifacts != null) {
        installer.install(names.split(","), artifacts.split(","));
      } else {
        installer.install(names.split(","));
      }
    }
  }