Class: EnigmaRuby::Enigma

Inherits:
Object
  • Object
show all
Defined in:
lib/enigma_ruby/enigma.rb

Instance Method Summary collapse

Constructor Details

#initialize(rotor_settings = []) ⇒ Enigma

Returns a new instance of Enigma.



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# File 'lib/enigma_ruby/enigma.rb', line 6

def initialize(rotor_settings = [])
  initialize_rotors(rotor_settings)
  @commands = [
    Commands::SwapPlugboard.new,
    Commands::EncodeRotorForward.new(@rotors),
    Commands::Reflect.new,
    Commands::EncodeRotorBackward.new(@rotors),
    Commands::SwapPlugboard.new,
    Commands::AdvanceRotors.new(@rotors)
  ]
end

Instance Method Details

#encrypt(cleartext) ⇒ Object 



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# File 'lib/enigma_ruby/enigma.rb', line 18

def encrypt(cleartext)
  encoded_text = ''
  cleartext.each_char do |char|
    next if SKIP_CHARACTERS_REGEX .match?(char)
    next encoded_text << char if NON_ENCRYPTED_CHARACTERS_REGEX .match?(char)

    context = { encoded_char: char }
    @commands.each { |command| command.execute(context) }
    encoded_text << context[:encoded_char]
  end
  encoded_text
end