public override CommandResultCode Execute(IExecutionContext context, CommandArguments args)
{
if (args.Count > 1)
{
return(CommandResultCode.SyntaxError);
}
string commandName = null;
if (args.MoveNext())
{
commandName = args.Current;
}
// nothing given: provide generic help.
Application.Error.WriteLine();
int maxPad = 0;
if (commandName == null)
{
ICollection <Command> commands = Application.Commands.RegisteredCommands;
// process the command groups first...
Dictionary <string, List <CommandHelp> > groups = new Dictionary <string, List <CommandHelp> >();
foreach (Command command in commands)
{
string groupName = command.GroupName;
if (groupName == null || groupName.Length == 0)
{
groupName = "commands";
}
List <CommandHelp> list;
if (!groups.TryGetValue(groupName, out list))
{
list = new List <CommandHelp>();
groups[groupName] = list;
}
CommandHelp commandHelp = new CommandHelp();
StringBuilder cmdPrint = new StringBuilder(" ");
string[] aliases = command.Aliases;
cmdPrint.Append(command.Name);
if (aliases != null && aliases.Length > 0)
{
cmdPrint.Append(" | ");
for (int i = 0; i < aliases.Length; i++)
{
if (i != 0)
{
cmdPrint.Append(" | ");
}
cmdPrint.Append(aliases[i]);
}
}
commandHelp.Name = cmdPrint.ToString();
string description = command.ShortDescription;
if (description == null)
{
// no description ... try to get the groups description...
}
commandHelp.Description = description;
maxPad = Math.Max(maxPad, cmdPrint.Length);
list.Add(commandHelp);
}
foreach (KeyValuePair <string, List <CommandHelp> > entry in groups)
{
string groupName = entry.Key;
Application.Error.Write(groupName);
Application.Error.Write(":");
Application.Error.WriteLine();
List <CommandHelp> commandList = entry.Value;
foreach (CommandHelp command in commandList)
{
Application.Error.Write(" ");
Application.Error.Write(command.Name);
if (command.Description != null)
{
for (int i = 0; i < maxPad - command.Name.Length; ++i)
{
Application.Error.Write(" ");
}
Application.Error.Write(" : ");
Application.Error.Write(command.Description);
}
Application.Error.WriteLine();
}
}
}
else
{
CommandDispatcher disp = Application.Commands;
string cmdString = disp.CompleteCommandName(commandName);
Command c = disp.GetCommand(cmdString);
if (c == null)
{
Application.Error.WriteLine("Help: unknown command '" + cmdString + "'");
Application.Error.WriteLine();
return(CommandResultCode.ExecutionFailed);
}
WriteDescription(c);
}
Application.Error.WriteLine();
return(CommandResultCode.Success);
}
