001    package net.minecraft.command;
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.entity.player.EntityPlayer;
008    import net.minecraft.server.MinecraftServer;
009    
010    public class CommandHelp extends CommandBase
011    {
012        public String getCommandName()
013        {
014            return "help";
015        }
016    
017        /**
018         * Return the required permission level for this command.
019         */
020        public int getRequiredPermissionLevel()
021        {
022            return 0;
023        }
024    
025        public String getCommandUsage(ICommandSender par1ICommandSender)
026        {
027            return par1ICommandSender.translateString("commands.help.usage", new Object[0]);
028        }
029    
030        public List getCommandAliases()
031        {
032            return Arrays.asList(new String[] {"?"});
033        }
034    
035        public void processCommand(ICommandSender par1ICommandSender, String[] par2ArrayOfStr)
036        {
037            List var3 = this.getSortedPossibleCommands(par1ICommandSender);
038            byte var4 = 7;
039            int var5 = (var3.size() - 1) / var4;
040            boolean var6 = false;
041            ICommand var9;
042            int var11;
043    
044            try
045            {
046                var11 = par2ArrayOfStr.length == 0 ? 0 : parseIntBounded(par1ICommandSender, par2ArrayOfStr[0], 1, var5 + 1) - 1;
047            }
048            catch (NumberInvalidException var10)
049            {
050                Map var8 = this.getCommands();
051                var9 = (ICommand)var8.get(par2ArrayOfStr[0]);
052    
053                if (var9 != null)
054                {
055                    throw new WrongUsageException(var9.getCommandUsage(par1ICommandSender), new Object[0]);
056                }
057    
058                throw new CommandNotFoundException();
059            }
060    
061            int var7 = Math.min((var11 + 1) * var4, var3.size());
062            par1ICommandSender.sendChatToPlayer("\u00a72" + par1ICommandSender.translateString("commands.help.header", new Object[] {Integer.valueOf(var11 + 1), Integer.valueOf(var5 + 1)}));
063    
064            for (int var12 = var11 * var4; var12 < var7; ++var12)
065            {
066                var9 = (ICommand)var3.get(var12);
067                par1ICommandSender.sendChatToPlayer(var9.getCommandUsage(par1ICommandSender));
068            }
069    
070            if (var11 == 0 && par1ICommandSender instanceof EntityPlayer)
071            {
072                par1ICommandSender.sendChatToPlayer("\u00a7a" + par1ICommandSender.translateString("commands.help.footer", new Object[0]));
073            }
074        }
075    
076        /**
077         * Returns a sorted list of all possible commands for the given ICommandSender.
078         */
079        protected List getSortedPossibleCommands(ICommandSender par1ICommandSender)
080        {
081            List var2 = MinecraftServer.getServer().getCommandManager().getPossibleCommands(par1ICommandSender);
082            Collections.sort(var2);
083            return var2;
084        }
085    
086        protected Map getCommands()
087        {
088            return MinecraftServer.getServer().getCommandManager().getCommands();
089        }
090    }