unknown_command.rb

require 'hiera/backend/eyaml/subcommand'

class Hiera
  module Backend
    module Eyaml
      module Subcommands
        class UnknownCommand < Eyaml::Subcommand
          class << self
            attr_accessor :original_command
          end

          @@original_command = 'unknown'

          def self.options
            []
          end

          def self.description
            "Unknown command (#{@@original_command})"
          end

          def self.execute
            puts <<~EOS
              Unknown subcommand#{': ' + Eyaml.subcommand if Eyaml.subcommand}

              Usage: eyaml <subcommand>

              Please use one of the following subcommands or help for more help:
                #{Eyaml.subcommands.sort.collect do |command|
                    command_class = Subcommands.const_get(Utils.camelcase(command))
                    command unless command_class.hidden?
                  end.compact.join(', ')}
            EOS
          end

          def self.hidden?
            true
          end
        end
      end
    end
  end
end