private void Execute(List <string> args)
{
string commandName = string.Empty;
if (args.Count >= 1 && Regex.IsMatch(args[0], "^[a-z]+$"))
{
commandName = args[0];
args.RemoveAt(0); // Remove the argument we just used
}
// Attempt to find the command for the name
CommandDescriptor commandDescriptor = commandRegistry.GetDescriptor(commandName, null);
if (commandDescriptor == null)
{
throw new Exception(string.Format("Command '{0}' is not recognized.", commandName));
}
// Determine if this is a call for a sub command
while (args.Count >= 1 && Regex.IsMatch(args[0], "^[a-z]+$"))
{
commandName = args[0];
var subCommandDescriptor = commandRegistry.GetDescriptor(commandName, commandDescriptor);
if (subCommandDescriptor == null)
{
break;
}
commandDescriptor = subCommandDescriptor;
args.RemoveAt(0); // Remove the argument we just used
}
// Create an instance of the required command
ICommand command = commandFactory.Create(commandDescriptor.CommandType);
// Parse the arguments and apply them to the command
if (args.Count > 0)
{
foreach (IArgumentParser argumentParser in argumentParsers)
{
argumentParser.Apply(args, command, commandDescriptor);
}
// Ensure that all the arguments have been parsed
if (args.Count > 0)
{
throw new Exception(string.Format("Unsupported argument '{0}'.", args[0]));
}
}
// Execute the code of the command
command.Execute();
}