001    package org.bukkit.command.defaults;
002    
003    import java.util.ArrayList;
004    import java.util.Collections;
005    import java.util.List;
006    
007    import org.apache.commons.lang.Validate;
008    import org.bukkit.Bukkit;
009    import org.bukkit.ChatColor;
010    import org.bukkit.OfflinePlayer;
011    import org.bukkit.command.Command;
012    import org.bukkit.command.CommandSender;
013    import org.bukkit.entity.Player;
014    import org.bukkit.util.StringUtil;
015    
016    import com.google.common.collect.ImmutableList;
017    
018    public class OpCommand extends VanillaCommand {
019        public OpCommand() {
020            super("op");
021            this.description = "Gives the specified player operator status";
022            this.usageMessage = "/op <player>";
023            this.setPermission("bukkit.command.op.give");
024        }
025    
026        @Override
027        public boolean execute(CommandSender sender, String currentAlias, String[] args) {
028            if (!testPermission(sender)) return true;
029            if (args.length != 1 || args[0].length() == 0)  {
030                sender.sendMessage(ChatColor.RED + "Usage: " + usageMessage);
031                return false;
032            }
033    
034            OfflinePlayer player = Bukkit.getOfflinePlayer(args[0]);
035            player.setOp(true);
036    
037            Command.broadcastCommandMessage(sender, "Opped " + args[0]);
038            return true;
039        }
040    
041        @Override
042        public List<String> tabComplete(CommandSender sender, String alias, String[] args) throws IllegalArgumentException {
043            Validate.notNull(sender, "Sender cannot be null");
044            Validate.notNull(args, "Arguments cannot be null");
045            Validate.notNull(alias, "Alias cannot be null");
046    
047            if (args.length == 1) {
048                if (!(sender instanceof Player)) {
049                    return ImmutableList.of();
050                }
051    
052                String lastWord = args[0];
053                if (lastWord.length() == 0) {
054                    return ImmutableList.of();
055                }
056    
057                Player senderPlayer = (Player) sender;
058    
059                ArrayList<String> matchedPlayers = new ArrayList<String>();
060                for (Player player : sender.getServer().getOnlinePlayers()) {
061                    String name = player.getName();
062                    if (!senderPlayer.canSee(player) || player.isOp()) {
063                        continue;
064                    }
065                    if (StringUtil.startsWithIgnoreCase(name, lastWord)) {
066                        matchedPlayers.add(name);
067                    }
068                }
069    
070                Collections.sort(matchedPlayers, String.CASE_INSENSITIVE_ORDER);
071                return matchedPlayers;
072            }
073            return ImmutableList.of();
074        }
075    }