thor

Map options to a class. Simply create a class with the appropriate annotations, and have options automatically map to functions and parameters.

Examples:

class MyApp
  extend Thor                                                           # [1]

  map "-L" => :list                                                       # [2]

  desc "install APP_NAME", "install one of the available apps"            # [3]
  method_options :force => :boolean                                       # [4]
  def install(name, opts)
    ... code ...
    if opts[:force]
      # do something
    end
  end

  desc "list [SEARCH]", "list all of the available apps, limited by SEARCH"
  def list(search = "")
    # list everything
  end

end

MyApp.start

Thor automatically maps commands as follows:

app install name --force

That gets converted to:

MyApp.new.install("name", :force => true)

[1] Use extend Thor to turn a class into an option mapper

[2] Map additional non-valid identifiers to specific methods. In this case, convert -L to :list

[3] Describe the method immediately below. The first parameter is the usage information, and the second parameter is the description.

[4] Provide any additional options. These will be marshaled from -- and - params. In this case, a --force and a -f option is added.

Types for method_options