/// <summary>
/// Checks to make sure the strings are the same
/// </summary>
/// <param name="str">the string used to cross the rotor</param>
/// <param name="cypher">the cypher used in the rotor</param>
private void CheckStrings(string str, string cypher)
{
// stores any errors that may occur
Dictionary <POTENTIAL_ERRORS, List <char> > errors
= new Dictionary <POTENTIAL_ERRORS, List <char> >();
// a list that stores the information that is checked
List <char> currentCheck = new List <char>();
// check for dublicates in str
currentCheck = BasicFunctions.DuplicatedCharacters(str);
if (currentCheck.Count > 0) // if there are dublicates in the string
{
errors.Add(POTENTIAL_ERRORS.Dublicates_FromString, currentCheck);
}
// check for dublicates in cypher
currentCheck = BasicFunctions.DuplicatedCharacters(cypher);
if (currentCheck.Count > 0) // if there are duplicates in the cypher
{
errors.Add(POTENTIAL_ERRORS.Dublicates_FromCypher, currentCheck);
}
// look for missing letters
currentCheck = BasicFunctions.CompareStringsCharacters(cypher, str);
if (currentCheck.Count > 0) // if there are letters missing in the string
{
errors.Add(POTENTIAL_ERRORS.Missing_FromString, currentCheck);
}
currentCheck = BasicFunctions.CompareStringsCharacters(str, cypher);
if (currentCheck.Count > 0) // if there are letters missing in the cypher
{
errors.Add(POTENTIAL_ERRORS.Missing_FromCypher, currentCheck);
}
// if everything is valid
if (errors.Count == 0)
{
rotorString = str;
rotorCypher = cypher;
}
else
{
// throw exception
throw new InvalidRotorSettingsException(errors, str, cypher, DisplayRotationLetters());
}
}
