extract_modules

# File railties/lib/rails_generator/base.rb, line 186
        def extract_modules(name)
          modules = name.include?('/') ? name.split('/') : name.split('::')
          name    = modules.pop
          path    = modules.map { |m| m.underscore }
          file_path = (path + [name.underscore]).join('/')
          nesting = modules.map { |m| m.camelize }.join('::')
          [name, path, file_path, nesting, modules.size]
        end