/// <summary>
/// Run a letter through the scrambler in reverse.
/// </summary>
/// <param name="letter"></param>
/// <returns></returns>
public char ReverseScramble(char letter)
{
if (letter == ' ')
{
return(letter);
}
var code = EnigmaHelper.ToCode(letter);
return(EnigmaHelper.ToLetter(wirings.ToList().IndexOf(code)));
}
/// <summary>
/// Run a letter through the scrambler.
/// </summary>
/// <param name="letter"></param>
/// <returns></returns>
public char Scramble(char letter)
{
if (letter == ' ')
{
return(letter);
}
var index = EnigmaHelper.ToCode(letter);
var scrambledLetter = EnigmaHelper.ToLetter(wirings[index]);
return(scrambledLetter);
}
public char Reflect(char letter)
{
if (letter == ' ')
{
return(letter);
}
char swappedLetter;
var code = EnigmaHelper.ToCode(letter);
var codePos = Array.IndexOf(letterSwaps1, code);
if (codePos < 0)
{
codePos = Array.IndexOf(letterSwaps2, code);
swappedLetter = EnigmaHelper.ToLetter(letterSwaps1[codePos]);
}
else
{
swappedLetter = EnigmaHelper.ToLetter(letterSwaps2[codePos]);
}
return(swappedLetter);
}
public char Process(char letter)
{
if (letter == ' ')
{
return(letter);
}
var code = EnigmaHelper.ToCode(letter);
var cable = this.cables.SingleOrDefault(c => c.Contains(code));
if (cable == null)
{
return(letter);
}
if (Array.IndexOf(cable, code) == 0)
{
return(EnigmaHelper.ToLetter(cable[1]));
}
else
{
return(EnigmaHelper.ToLetter(cable[0]));
}
}