Revised: Namespacing thor commands in a standalone Ruby executable

executable-with-subcommands-using-thor.log

$ ./executable-with-subcommands-using-thor.rb
Tasks:
  executable-with-subcommands-using-thor.rb help [TASK]  # Describe available tasks or one specific task
  executable-with-subcommands-using-thor.rb subA [TASK]  # Execute a task in namespace subA
  executable-with-subcommands-using-thor.rb subB [TASK]  # Execute a task in namespace subB
  executable-with-subcommands-using-thor.rb test         # test in CLI

$ ./executable-with-subcommands-using-thor.rb help
Tasks:
  executable-with-subcommands-using-thor.rb help [TASK]  # Describe available tasks or one specific task
  executable-with-subcommands-using-thor.rb subA [TASK]  # Execute a task in namespace subA
  executable-with-subcommands-using-thor.rb subB [TASK]  # Execute a task in namespace subB
  executable-with-subcommands-using-thor.rb test         # test in CLI

$ ./executable-with-subcommands-using-thor.rb subA help test
Usage:
  executable-with-subcommands-using-thor.rb subA test

test in SubCommandA

executable-with-subcommands-using-thor.rb

#!/usr/bin/env ruby
# -*- encoding: UTF-8 -*-

# Derived from <http://stackoverflow.com/questions/5663519/namespacing-thor-commands-in-a-standalone-ruby-executable>

require 'rubygems'
require 'thor'
require 'thor/group'

module MyApp
  class ThorSubCommandTemplate < Thor
    class << self
      def subcommand_setup(name, usage, desc)
        namespace :"#{name}"
        @subcommand_usage = usage
        @subcommand_desc = desc
      end

      def banner(task, namespace = nil, subcommand = false)
        "#{basename} #{task.formatted_usage(self, true, true)}"
      end

      def register_to(klass)
        klass.register(self, @namespace, @subcommand_usage, @subcommand_desc)
      end
    end
  end

  class SubCommandA < ThorSubCommandTemplate
    subcommand_setup "subA", "subA [TASK]", "Execute a task in namespace subA"

    desc "test", "test in SubCommandA"
    def test
      # ...
    end
  end

  class SubCommandB < ThorSubCommandTemplate
    subcommand_setup "subB", "subB [TASK]", "Execute a task in namespace subB"

    desc "test", "test in SubCommandB"
    def test
      # ...
    end
  end

  class CLI < Thor
    SubCommandA.register_to(self)
    SubCommandB.register_to(self)

    desc "test", "test in CLI"
    def test
      # ...
    end
  end
end

MyApp::CLI.start