int execute()

in indexer-cli/src/main/java/org/apache/maven/index/cli/NexusIndexerCli.java [122:177]
45 lines of code
10 McCabe index (conditional complexity)

    int execute(String[] args) {
        CommandLine cli;

        try {
            cli = new DefaultParser().parse(buildCliOptions(), cleanArgs(args));
        } catch (ParseException e) {
            System.err.println("Unable to parse command line options: " + e.getMessage());

            displayHelp();

            return 1;
        }

        boolean debug = cli.hasOption(DEBUG);

        if (cli.hasOption(HELP)) {
            displayHelp();

            return 0;
        }

        if (cli.hasOption(VERSION)) {
            showVersion();

            return 0;
        } else if (debug) {
            showVersion();
        }

        final Module app = Main.wire(BeanScanning.INDEX);

        Components components = Guice.createInjector(app).getInstance(Components.class);

        if (cli.hasOption(UNPACK)) {
            try {
                return unpack(cli, components);
            } catch (Exception e) {
                e.printStackTrace(System.err);
                return 1;
            }
        } else if (cli.hasOption(INDEX) && cli.hasOption(REPO)) {
            try {
                return index(cli, components);
            } catch (Exception e) {
                e.printStackTrace(System.err);
                return 1;
            }
        } else {
            System.out.println();
            System.out.println("Use either unpack (\"" + UNPACK + "\") or index (\"" + INDEX + "\" and \"" + REPO
                    + "\") options, but none has been found!");
            System.out.println();
            displayHelp();
            return 1;
        }
    }