public int run()

in parquet-cli/src/main/java/org/apache/parquet/cli/Main.java [113:184]
66 lines of code
16 McCabe index (conditional complexity)

  public int run(String[] args) throws Exception {
    try {
      jc.parse(args);
    } catch (MissingCommandException e) {
      console.error(e.getMessage());
      return 1;
    } catch (ParameterException e) {
      help.setProgramName(programName);
      String cmd = jc.getParsedCommand();
      if (args.length == 1) { // i.e., just the command (missing required arguments)
        help.helpCommands.add(cmd);
        help.run();
        return 1;
      } else { // check for variants like 'cmd --help' etc.
        for (String arg : args) {
          if (HELP_ARGS.contains(arg)) {
            help.helpCommands.add(cmd);
            help.run();
            return 0;
          }
        }
      }
      console.error(e.getMessage());
      return 1;
    }

    help.setProgramName(programName);

    // configure log4j
    if (debug) {
      org.apache.log4j.Logger console = org.apache.log4j.Logger.getLogger(Main.class);
      console.setLevel(Level.DEBUG);
    }

    String parsed = jc.getParsedCommand();
    if (parsed == null) {
      help.run();
      return 1;
    } else if ("help".equals(parsed)) {
      return help.run();
    }

    Command command = (Command) jc.getCommands().get(parsed).getObjects().get(0);
    if (command == null) {
      help.run();
      return 1;
    }

    try {
      if (command instanceof Configurable) {
        ((Configurable) command).setConf(getConf());
      }
      return command.run();
    } catch (IllegalArgumentException e) {
      if (debug) {
        console.error("Argument error", e);
      } else {
        console.error("Argument error: {}", e.getMessage());
      }
      return 1;
    } catch (IllegalStateException e) {
      if (debug) {
        console.error("State error", e);
      } else {
        console.error("State error: {}", e.getMessage());
      }
      return 1;
    } catch (Exception e) {
      console.error("Unknown error", e);
      return 1;
    }
  }