public static void main()

in maven-scm-client/src/main/java/org/apache/maven/scm/client/cli/MavenScmCli.java [100:158]
43 lines of code
8 McCabe index (conditional complexity)

    public static void main(String[] args) {
        MavenScmCli cli;

        try {
            cli = new MavenScmCli();
        } catch (Exception ex) {
            System.err.println("Error while starting Maven SCM.");

            ex.printStackTrace(System.err);

            return;
        }

        String scmUrl;

        String command;

        if (args.length < 3) {
            System.err.println(
                    "Usage: maven-scm-client <command> <working directory> <scm url> [<scmVersion> [<scmVersionType>]]");
            System.err.println("scmVersion is a branch name/tag name/revision number.");
            System.err.println(
                    "scmVersionType can be 'branch', 'tag', 'revision'. " + "The default value is 'revision'.");

            return;
        }

        command = args[0];

        // SCM-641
        File workingDirectory = new File(args[1]).getAbsoluteFile();

        scmUrl = args[2];

        ScmVersion scmVersion = null;
        if (args.length > 3) {
            String version = args[3];

            if (args.length > 4) {
                String type = args[4];

                if ("tag".equals(type)) {
                    scmVersion = new ScmTag(version);
                } else if ("branch".equals(type)) {
                    scmVersion = new ScmBranch(version);
                } else if ("revision".equals(type)) {
                    scmVersion = new ScmRevision(version);
                } else {
                    throw new IllegalArgumentException("'" + type + "' version type isn't known.");
                }
            } else {
                scmVersion = new ScmRevision(args[3]);
            }
        }

        cli.execute(scmUrl, command, workingDirectory, scmVersion);

        cli.stop();
    }