///<inheritdoc/>
public override string Run(string input, bool forward)
{
var output = new StringBuilder();
int indexer = 0;
foreach (var c in input)
{
if (indexer == Key.Length)
{
indexer = 0;
}
var steps = Alphabet.IndexOf(Key[indexer]) * (forward ? 1 : -1);
output.Append(Alphabet.WrapChar(c, steps));
indexer++;
}
return(output.ToString());
}
/// <summary>
/// A special run for the Enigma. Simulates a key press and returns a result.
/// </summary>
/// <param name="input">The character that has been depressed</param>
/// <returns>The output, i.e the character that will be lit in the lamp</returns>
public virtual char Run(char input)
{
//Rotate the FastRotor
Rotors[0].Rotate();
//Get the index of the letter in the alphabet:
int index = Alphabet.IndexOf(input);
//Pass the current to the Stator:
index = Stator.GetPath(index, true);
//Pass the current through successive rotors:
for (int i = 0; i < Rotors.Count; i++)
{
index = Rotors[i].GetPath(index, true);
}
//Pass the current the Reflector
index = Reflector.GetPath(index, true);
//Pass through the rotors in reverse:
for (int i = Rotors.Count - 1; i > -1; i--)
{
var rotor = Rotors[i];
index = rotor.GetPath(index, false);
}
//Pass the current through the Stator:
index = Stator.GetPath(index, false);
var result = Alphabet[index];
//perform plugboard simulation:
if (Plugboard != null)
{
result = Plugboard.Simulate(result);
}
return(result);
}