public Twiddle(PrintWriter out,
    PrintWriter err) 
{
         
      this.out = out;
      this.err = err;
}

 public  void addCommandPrototype(Command proto) 
{
      String name = proto.getName();
      log.debug("Adding command '" + name + "'; proto: " + proto);
      commandProtoList.add(proto);
      commandProtoMap.put(name, proto);
}

 public Command createCommand(String name) throws Exception, NoSuchCommandException 
{
      //
      // jason: need to change this to accept unique substrings on command names
      //
      Command proto = (Command) commandProtoMap.get(name);
      if (proto == null)
      {
         throw new NoSuchCommandException(name);
      }
      Command command = (Command) proto.clone();
      command.setCommandContext(createCommandContext());
      return command;
}

 public  void displayCommandList() 
{
      if( commandProtoList.size() == 0 )
      {
         try
         {
            loadCommands();
         }
         catch(Exception e)
         {
            System.err.println("Failed to load commnads from: "+cmdProps);
            e.printStackTrace();
         }
      }
      Iterator iter = commandProtoList.iterator();
      out.println(PROGRAM_NAME + " commands: ");
      int maxNameLength = getMaxCommandNameLength();
      log.debug("max command name length: " + maxNameLength);
      while (iter.hasNext())
      {
         Command proto = (Command) iter.next();
         String name = proto.getName();
         String desc = proto.getDescription();
         out.print("    ");
         out.print(name);
         // an even pad, so things line up correctly
         out.print(Strings.pad(" ", maxNameLength - name.length()));
         out.print("    ");
         out.println(desc);
      }
      out.flush();
}

 public static  void main(String[] args) 
{
      Command command = null;
      try
      {
         // initialize java.protocol.handler.pkgs
         initProtocolHandlers();
         // Prosess global options
         processArguments(args);
         loadCommands();
         // Now execute the command
         if (commandName == null)
         {
            // Display program help
            displayHelp();
         }
         else
         {
            command = twiddle.createCommand(commandName);
            if (commandHelp)
            {
               System.out.println("Help for command: '" + command.getName() + "'");
               System.out.println();
               command.displayHelp();
            }
            else
            {
               // Execute the command
               command.execute(commandArgs);
            }
         }
         System.exit(0);
      }
      catch (CommandException e)
      {
         log.error("Command failure", e);
         System.err.println();
         if (e instanceof NoSuchCommandException)
         {
            twiddle.displayCommandList();
         }
         else
         {
            if (command != null)
            {
               System.err.println("Help for command: '" + command.getName() + "'");
               System.err.println();
               command.displayHelp();
            }
         }
         System.exit(1);
      }
      catch (Exception e)
      {
         log.error("Exec failed", e);
         System.exit(1);
      }
}

 public  void setAdapterName(String name) 
{
      this.adapterName = name;
}

 public  void setQuiet(boolean flag) 
{
      this.quiet = flag;
}

 public  void setServerURL(String url) 
{
      this.serverURL = url;
}