} // program arguments (elements of argv which are neither options nor option arguments)
private void PrintOptions()
{
foreach (Option o in Options)
{
bool isArgumented = o is ArgumentedOption;
Console.WriteLine("****** Option ******");
Console.WriteLine("Symbol: " + o.Symbol);
Console.WriteLine("Is argumented: " + isArgumented);
if (isArgumented)
{
ArgumentedOption a = o as ArgumentedOption;
Console.WriteLine("Argument required: " + a.RequiresArgument);
}
}
}
public static List <Option> ParseOptionString(string optString)
{
List <Option> options = new List <Option>();
int maxIndex = optString.Length - 1;
for (int i = 0; i <= maxIndex; i++)
{
if (char.IsLetterOrDigit(optString[i]))
{
// An alphanumeric character has been found - treat it as an option symbol
char symbol = optString[i];
// Check the next two indices of the string for colons to determine whether the option takes (optional) arguments
int firstColonIndex = i + 1, secondColonIndex = i + 2;
bool takesArguments = (firstColonIndex <= maxIndex) && (optString[firstColonIndex] == ':'),
argumentsOptional = (secondColonIndex <= maxIndex) && (optString[secondColonIndex] == ':');
Option option;
if (takesArguments)
{
if (argumentsOptional)
{
option = new ArgumentedOption(symbol, false); // option takes argument optionally
}
else
{
option = new ArgumentedOption(symbol, true); // option takes a mandatory argument
}
}
else
{
// the option does not take arguments
option = new Option(symbol);
}
// TODO:
if (options.Find(e => e.Symbol == optString[i]) == null)
{
options.Add(option);
}
else
{
throw new OptionStringFormatException(optString[i]);
}
}
else
{
// TODO:
if (optString[i] == ':')
{
if (options.Count == 0 || // a colon has been encountered at the beginning of the string (before any option symbols)
(optString[i - 1] == ':' &&
optString[i - 2] == ':')) // a third, subsequent colon has been encountered
{
throw new OptionStringFormatException(optString[i], i);
}
}
else
{
throw new OptionStringFormatException(optString[i], i);
}
}
}
return(options);
}
