public char Encode(char character)
{
var offsetedCharacter = AlphabetHelper.GetNextChar(character, GetOffset());
var mappedCharacter = Mapping[offsetedCharacter];
return(AlphabetHelper.GetNextChar(mappedCharacter, GetInverseOffset()));
}
public char InverseEncode(char character)
{
var offsetedCharacter = AlphabetHelper.GetNextChar(character, GetOffset());
var mappedCharacter = Mapping.Where(x => x.Value == offsetedCharacter).FirstOrDefault().Key;
return(AlphabetHelper.GetNextChar(mappedCharacter, GetInverseOffset()));
}
/// <summary>
/// Move the rotor to the next letter. If the current letter is the notch letter, the next rotor has to me move
/// </summary>
/// <returns>True if the next rotor has to be moved, false if hasn't </returns>
public bool MoveRotor()
{
var moveNextRotor = TurnOverNotchLetter == CurrentLetter;
CurrentLetter = AlphabetHelper.GetNextChar(CurrentLetter);
return(moveNextRotor);
}
private Reflector(string code, string mapping)
{
Code = code;
Mapping = new Dictionary <char, char>();
var alphabet = AlphabetHelper.GetAlphabet().ToList();
for (int idx = 0; idx < 26; idx++)
{
Mapping[alphabet[idx]] = mapping[idx];
}
}
/// <summary>
/// Create the rotor with the given configuration
/// </summary>
/// <param name="code"></param>
/// <param name="turnOverNotchLetter"></param>
/// <param name="mapping"></param>
/// <param name="startingLetter"></param>
private Rotor(string code, char turnOverNotchLetter, string mapping, char startingLetter)
{
Code = code;
TurnOverNotchLetter = turnOverNotchLetter;
StartingLetter = startingLetter;
CurrentLetter = startingLetter;
Mapping = new Dictionary <char, char>();
var alphabet = AlphabetHelper.GetAlphabet().ToList();
for (int idx = 0; idx < 26; idx++)
{
Mapping[alphabet[idx]] = mapping[idx];
}
}