private IEnumerable<string> GenerateNames(int ruleNum, string nameFormat, int currentChannel, int totalChannels)
{
var resultingNames = new List<string>();
if (lbRules.Items.Count < ruleNum || currentChannel > totalChannels) {
return resultingNames;
}
var ruleEngine = _ruleEngines[ruleNum - 1];
if (ruleEngine.Iterations != 0) {
var generatedNames = new List<string>(ruleEngine.GenerateNames());
for (var i = 0; (i < ruleEngine.Iterations || ruleEngine.IsUnlimited) && currentChannel + resultingNames.Count < totalChannels; i++) {
var parts = new Regex("{" + (ruleNum - 1) + "[:]?[a-zA-Z0-9]*}").Match(nameFormat).ToString().Split(':');
var format = parts.Count() == 2 ? "{0:" + parts[1] : "{0}";
var replace = parts.Count() == 2 ? "{" + (ruleNum - 1) + ":" + parts[1] : "{" + (ruleNum - 1) + "}";
var replacementValue = ruleEngine.IsUnlimited ? ruleEngine.GenerateName(i) : generatedNames[i];
int numericReplacement;
var formattingResult = nameFormat.Replace(replace,
int.TryParse(replacementValue, out numericReplacement) ? string.Format(format, numericReplacement) : replacementValue);
// Is this the last rule?
if (ruleNum >= _ruleEngines.Count) {
resultingNames.Add(formattingResult);
}
else {
resultingNames.AddRange(
GenerateNames(ruleNum + 1, formattingResult, currentChannel + resultingNames.Count, totalChannels).ToList());
}
}
}
else {
resultingNames.Add(ruleEngine.GenerateDefaultName());
}
return resultingNames;
}