private Tuple <CommandResult, List <object>, CommandInfo> ValidateDo(string commandline)
{
// Prepare
var result = new CommandResult();
// Parse input
List <KeyValuePair <string, object> > args = _parser.Parse(commandline).ToList();
if (!args.Any())
{
// Parsing error
result.State = ResultState.ParsingError;
return(new Tuple <CommandResult, List <object>, CommandInfo>(result, null, null));
}
// System commands
if (args.First().Key == "ncommandsystem")
{
// Show help / info: overview of available functions
if (args.Skip(1).FirstOrDefault().Key?.ToLower() == "help")
{
result.State = ResultState.ShowHelpOverview;
result.CommandInfo = new CommandInfo()
{
CommandName = "ncommandsystem.help"
};
result.Result = _lookup.Commands;
return(new Tuple <CommandResult, List <object>, CommandInfo>(result, null, null));
}
if (args.Skip(1).FirstOrDefault().Key?.ToLower() == "exit" || args.Skip(1).FirstOrDefault().Key?.ToLower() == "quit" || args.Skip(1).FirstOrDefault().Key?.ToLower() == "cancel")
{
result.State = ResultState.Canceled;
return(new Tuple <CommandResult, List <object>, CommandInfo>(result, null, null));
}
}
// Command by name
var command = _lookup.GetCommand(args.First().Key);
result.CommandInfo = command;
if (command == null)
{
result.State = ResultState.UnknownCommand;
return(new Tuple <CommandResult, List <object>, CommandInfo>(result, null, null));
}
// Find missing arguments
var mapper = new CommandMapper();
var mapped = mapper.Map(args.Skip(1), command.Arguments);
if (mapped.State == ResultState.MissingArguments)
{
result.State = ResultState.MissingArguments;
result.MissingArguments = mapped.MissingArguments;
result.MissingDefaultArguments = mapped.MissingDefaultArguments;
return(new Tuple <CommandResult, List <object>, CommandInfo>(result, null, null));
}
// Result
result.State = ResultState.Success;
return(new Tuple <CommandResult, List <object>, CommandInfo>(result, mapped.ResultArguments, command));
}