public static IEnumerable <FormatElementHelper> FindConsecutiveChars(this string testObject, char charToReplace)
{
var helpers = new List <FormatElementHelper>();
var helper = new FormatElementHelper();
var formatCharacters = testObject.ToCharArray();
var charPreviouslyFound = false;
for (var i = 0; i < formatCharacters.Length; i++)
{
if (ExaminingCharToReplace(charToReplace, formatCharacters, i))
{
UpdateHelper('0', charToReplace, helper);
charPreviouslyFound = true;
helper.PreviousLetter = formatCharacters[i] != charToReplace && char.IsLetter(formatCharacters[i]) ? formatCharacters[i] : helper.PreviousLetter;
}
else if (charPreviouslyFound && ExaminingFullStop(formatCharacters, i) && NextCharacterIsCharToReplace(charToReplace, formatCharacters, i))
{
UpdateHelper('.', '.', helper);
}
else
{
charPreviouslyFound = false;
helper.PreviousLetter = char.IsLetter(formatCharacters[i]) ? formatCharacters[i] : helper.PreviousLetter;
}
if (HelpersNotReadyToBeUpdated(helper, formatCharacters, charPreviouslyFound, i))
{
continue;
}
helpers.Add(helper);
helper = new FormatElementHelper();
}
return(helpers.OrderByDescending(x => x.StringReplacement.Length)
.ThenBy(x => x.StringReplacement.Contains('.')));
}
private static bool HelpersNotReadyToBeUpdated(FormatElementHelper helper, IReadOnlyCollection <char> formatCharacters, bool charPreviouslyFound, int i)
{
return(helper.StringReplacement == null || (charPreviouslyFound && i != formatCharacters.Count - 1));
}
private static void UpdateHelper(char formatAddition, char replacementAddition, FormatElementHelper helper)
{
helper.FormatSpecifier += formatAddition;
helper.StringReplacement += replacementAddition;
}