001    package net.minecraft.src;
002    
003    import java.util.Arrays;
004    import java.util.Collections;
005    import java.util.List;
006    import java.util.Map;
007    import net.minecraft.server.MinecraftServer;
008    
009    public class CommandHelp extends CommandBase
010    {
011        public String getCommandName()
012        {
013            return "help";
014        }
015    
016        /**
017         * Return the required permission level for this command.
018         */
019        public int getRequiredPermissionLevel()
020        {
021            return 0;
022        }
023    
024        public String getCommandUsage(ICommandSender par1ICommandSender)
025        {
026            return par1ICommandSender.translateString("commands.help.usage", new Object[0]);
027        }
028    
029        public List getCommandAliases()
030        {
031            return Arrays.asList(new String[] {"?"});
032        }
033    
034        public void processCommand(ICommandSender par1ICommandSender, String[] par2ArrayOfStr)
035        {
036            List var3 = this.getSortedPossibleCommands(par1ICommandSender);
037            byte var4 = 7;
038            int var5 = var3.size() / var4;
039            boolean var6 = false;
040            ICommand var9;
041            int var11;
042    
043            try
044            {
045                var11 = par2ArrayOfStr.length == 0 ? 0 : parseIntBounded(par1ICommandSender, par2ArrayOfStr[0], 1, var5 + 1) - 1;
046            }
047            catch (NumberInvalidException var10)
048            {
049                Map var8 = this.getCommands();
050                var9 = (ICommand)var8.get(par2ArrayOfStr[0]);
051    
052                if (var9 != null)
053                {
054                    throw new WrongUsageException(var9.getCommandUsage(par1ICommandSender), new Object[0]);
055                }
056    
057                throw new CommandNotFoundException();
058            }
059    
060            int var7 = Math.min((var11 + 1) * var4, var3.size());
061            par1ICommandSender.sendChatToPlayer("\u00a72" + par1ICommandSender.translateString("commands.help.header", new Object[] {Integer.valueOf(var11 + 1), Integer.valueOf(var5 + 1)}));
062    
063            for (int var12 = var11 * var4; var12 < var7; ++var12)
064            {
065                var9 = (ICommand)var3.get(var12);
066                par1ICommandSender.sendChatToPlayer(var9.getCommandUsage(par1ICommandSender));
067            }
068    
069            if (var11 == 0 && par1ICommandSender instanceof EntityPlayer)
070            {
071                par1ICommandSender.sendChatToPlayer("\u00a7a" + par1ICommandSender.translateString("commands.help.footer", new Object[0]));
072            }
073        }
074    
075        /**
076         * Returns a sorted list of all possible commands for the given ICommandSender.
077         */
078        protected List getSortedPossibleCommands(ICommandSender par1ICommandSender)
079        {
080            List var2 = MinecraftServer.getServer().getCommandManager().getPossibleCommands(par1ICommandSender);
081            Collections.sort(var2);
082            return var2;
083        }
084    
085        protected Map getCommands()
086        {
087            return MinecraftServer.getServer().getCommandManager().getCommands();
088        }
089    }