private async Task <ICommand> GetCommandAsync(CancellationToken token)
{
string line = await Connection.ReadLineAsync(Encoding.UTF8, token);
if (line.Length < 4)
{
await SendReplyAsync(ReplyCode.SyntaxError, "No command found", token);
return(null);
}
int spaceIndex = line.IndexOf(" ", StringComparison.Ordinal);
string command;
string arguments;
if (spaceIndex == -1)
{
command = line;
arguments = null;
}
else
{
command = line.Substring(0, spaceIndex);
arguments = line.Substring(spaceIndex + 1);
}
ICommandFactory commandFactory = ImplementationFactory.Get(command);
if (commandFactory == null)
{
await SendReplyAsync(ReplyCode.SyntaxError, "Command not implemented", token);
return(null);
}
return(commandFactory.CreateCommand(arguments));
}
