void cli()

in daemon-m40/src/main/java/org/apache/maven/cli/DaemonMavenCli.java [304:351]
42 lines of code
9 McCabe index (conditional complexity)

    void cli(CliRequest cliRequest) throws Exception {
        CLIManager cliManager = newCLIManager();

        CommandLine mavenConfig = null;
        try {
            File configFile = new File(cliRequest.multiModuleProjectDirectory, MVN_MAVEN_CONFIG);

            if (configFile.isFile()) {
                try (Stream<String> lines = Files.lines(configFile.toPath(), Charset.defaultCharset())) {
                    String[] args = lines.filter(arg -> !arg.isEmpty() && !arg.startsWith("#"))
                            .toArray(String[]::new);
                    mavenConfig = cliManager.parse(args);
                    List<?> unrecognized = mavenConfig.getArgList();
                    if (!unrecognized.isEmpty()) {
                        // This file can only contain options, not args (goals or phases)
                        throw new ParseException("Unrecognized maven.config file entries: " + unrecognized);
                    }
                }
            }
        } catch (ParseException e) {
            buildEventListener.log("Unable to parse maven.config: " + e.getMessage());
            buildEventListener.log("Run 'mvnd --help' for available options.");
            throw new ExitException(1);
        }

        try {
            if (mavenConfig == null) {
                cliRequest.commandLine = cliManager.parse(cliRequest.args);
            } else {
                cliRequest.commandLine = cliMerge(cliManager.parse(cliRequest.args), mavenConfig);
            }
        } catch (ParseException e) {
            buildEventListener.log("Unable to parse command line options: " + e.getMessage());
            buildEventListener.log("Run 'mvnd --help' for available options.");
            throw new ExitException(1);
        }

        // check for presence of unsupported command line options
        try {
            if (cliRequest.commandLine.hasOption("llr")) {
                throw new UnrecognizedOptionException("Option '-llr' is not supported starting with Maven 3.9.1");
            }
        } catch (ParseException e) {
            System.err.println("Unsupported options: " + e.getMessage());
            cliManager.displayHelp(System.out);
            throw e;
        }
    }