public Command Parse(string userText)
{
if (userText == "quit")
{
return(Command.Quit);
}
if (userText == "exit")
{
return(Command.Quit);
}
if (userText == "history")
{
return(Command.History);
}
if (userText == "help")
{
return(Command.Help);
}
if (userText == "about")
{
return(Command.About);
}
if (userText == "connect")
{
return(Command.IncompleteConnect);
}
if (userText == "disconnect")
{
return(Command.NotImplemented);
}
// ----- was this a valid 'connect' command ?? ------
ConnectCommandParseResult temp = ValidConnectionCommand(userText);
// if valid, then try to connect to server
if (temp.Valid)
{
LastConnectCommandParseResult.IpAddress = temp.IpAddress;
LastConnectCommandParseResult.Port = temp.Port;
return(Command.ConnectWithArguments);
}
// if get here, we don't recognise the command
return(Command.NotRecognised);
}
/// parse text from user
/// IF
/// in the form: connect <ip> <port>
/// THEN
/// return true
///
/// else return false
public ConnectCommandParseResult ValidConnectionCommand(string userText)
{
// defaults to Valid = false
ConnectCommandParseResult result = new ConnectCommandParseResult();
/*
* -------------------------------------------------- BEGIN
* ------- quick hack to save matt typing connection details lots of times
* REMOVE from final version !!!!!!!
*/
if (userText == "localhost")
{
result.Valid = true;
result.IpAddress = "127.0.0.1";
result.Port = 11000;
return(result);
}
// ---------------------------------------------------- END
// 3 words
// 1st = "connect"
// 2nd = valid ip address
// 3rd = port number
string[] words = userText.Split(' ');
// must be 3 words
if (words.Length != 3)
{
return(result);
}
// first word must be 'connect'
if (words[0] != "connect")
{
return(result);
}
// 3rd words must evaluate to an integer
int userPort;
if (Int32.TryParse(words[2], out userPort))
{
// seems okay - so set values ready to attempt to connect
result.Valid = true;
result.IpAddress = words[1];
result.Port = userPort;
}
return(result);
}