public CommandBuilder WithNamedBool(string name)
{
var param = new CommandNamedParameter(name, true, x => x);
param.ShortNames.Add(name.Substring(0, 1).ToLower());
param.LongNames.Add(name);
_lastCommand.NamedParameters.Add(param);
return this;
}
public ParserNamedParameterResult(CommandNamedParameter parameter, string value)
{
Parameter = parameter;
Value = value;
}
private void HandleMissingNamedParameterValue()
{
if (!_currentParameter.IsBool)
{
throw new CommandLineParserException("No value specified for parameter: " + _currentParameter.PropertyName);
}
NamedParameters.Add(new ParserNamedParameterResult(_currentParameter, true.ToString()));
_currentParameter = null;
}
public bool Advance()
{
if (_currentParameter != null)
{
switch (CurrentToken.Kind)
{
case TokenKind.EndOfInput:
HandleMissingNamedParameterValue();
return false;
case TokenKind.LongName:
case TokenKind.ShortName:
HandleMissingNamedParameterValue();
break;
case TokenKind.Value:
if (_currentParameter.IsBool && !CurrentToken.Text.IsBool())
{
NamedParameters.Add(new ParserNamedParameterResult(_currentParameter, true.ToString()));
_currentParameter = null;
return true;
}
NamedParameters.Add(new ParserNamedParameterResult(_currentParameter, CurrentToken.Text));
_currentParameter = null;
CurrentToken = _lexer.Pop();
return true;
}
}
return HandleDefaultState();
}
private bool HandleDefaultState()
{
switch (CurrentToken.Kind)
{
case TokenKind.EndOfInput:
return false;
case TokenKind.LongName:
// TODO - check for prefixes?
if (_longNames.ContainsKey(CurrentToken.Text))
{
_currentParameter = _longNames[CurrentToken.Text];
CurrentToken = _lexer.Pop();
return true;
}
if (_longHelpFlags.Contains(CurrentToken.Text))
{
HelpWanted = true;
CurrentToken = _lexer.Pop();
return true;
}
throw new CommandLineParserException("Unknown named parameter: " + CurrentToken.Text);
case TokenKind.ShortName:
if (_shortNames.ContainsKey(CurrentToken.Text))
{
_currentParameter = _shortNames[CurrentToken.Text];
CurrentToken = _lexer.Pop();
return true;
}
if (_shortHelpFlags.Contains(CurrentToken.Text))
{
HelpWanted = true;
CurrentToken = _lexer.Pop();
return true;
}
throw new CommandLineParserException("Unknown named parameter: " + CurrentToken.Text);
case TokenKind.Value:
if (_positionalParameters.Any())
{
var commandParam = _positionalParameters.Peek();
if (commandParam.IsList)
{
// A list; create a new param or add to an existing one
if ((PositionalParameters.Count == 0) || (PositionalParameters.Last().Parameter != commandParam))
{
if (commandParam.IsRequired)
{
_pendingRequired.Remove(commandParam.PropertyName);
}
PositionalParameters.Add(new ParserPositionalParameterResult(commandParam, CurrentToken.Text));
}
else
{
PositionalParameters.Last().Values.Add(CurrentToken.Text);
}
}
else
{
if (commandParam.IsRequired)
{
_pendingRequired.Remove(commandParam.PropertyName);
}
// Not a list; always create a new param
PositionalParameters.Add(new ParserPositionalParameterResult(commandParam, CurrentToken.Text));
_positionalParameters.Dequeue();
}
CurrentToken = _lexer.Pop();
return true;
}
if (CurrentNode is Command)
{
throw new CommandLineParserException("Unexpected positional parameter: " + CurrentToken.Text);
}
if (CurrentNode is CommandGroup)
{
// TODO - handle substring matching ("comm" should match "commit", if unique)
var next = ((CommandGroup)CurrentNode).Nodes.FirstOrDefault(x => x.Verb.Equals(CurrentToken.Text, StringComparison.InvariantCultureIgnoreCase));
if (next == null)
{
if (CurrentToken.Text == _helpVerb)
{
HelpWanted = true;
CurrentToken = _lexer.Pop();
return true;
}
}
if (next == null)
{
// TODO - build up a pretty message
throw new CommandLineParserException("Unknown command!");
}
// Advance
CurrentNode = next;
ExtractParameters(CurrentNode);
CurrentToken = _lexer.Pop();
return true;
}
// Should never hit this
throw new CommandLineParserException("Invalid parser state!");
}
return false;
}
