1 files changed, 59 insertions, 0 deletions
diff --git a/src/main/java/org/bukkit/command/defaults/GiveCommand.java b/src/main/java/org/bukkit/command/defaults/GiveCommand.java
index eeac739a..6010ac86 100644
--- a/src/main/java/org/bukkit/command/defaults/GiveCommand.java
+++ b/src/main/java/org/bukkit/command/defaults/GiveCommand.java
@@ -1,5 +1,10 @@
 package org.bukkit.command.defaults;
 
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.commons.lang.Validate;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.Material;
@@ -7,8 +12,21 @@ import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.util.StringUtil;
+
+import com.google.common.collect.ImmutableList;
 
 public class GiveCommand extends VanillaCommand {
+    private static List<String> materials;
+    static {
+        ArrayList<String> materialList = new ArrayList<String>();
+        for (Material material : Material.values()) {
+            materialList.add(material.name());
+        }
+        Collections.sort(materialList);
+        materials = ImmutableList.copyOf(materialList);
+    }
+
     public GiveCommand() {
         super("give");
         this.description = "Gives the specified player a certain amount of items";
@@ -60,4 +78,45 @@ public class GiveCommand extends VanillaCommand {
     public boolean matches(String input) {
         return input.equalsIgnoreCase("give");
     }
+
+    @Override
+    public List<String> tabComplete(CommandSender sender, String alias, String[] args) throws IllegalArgumentException {
+        Validate.notNull(sender, "Sender cannot be null");
+        Validate.notNull(args, "Arguments cannot be null");
+        Validate.notNull(alias, "Alias cannot be null");
+
+        if (args.length == 1) {
+            return super.tabComplete(sender, alias, args);
+        }
+        if (args.length == 2) {
+            final String arg = args[1];
+            final List<String> materials = GiveCommand.materials;
+            List<String> completion = null;
+
+            final int size = materials.size();
+            int i = Collections.binarySearch(materials, arg, String.CASE_INSENSITIVE_ORDER);
+
+            if (i < 0) {
+                // Insertion (start) index
+                i = -1 - i;
+            }
+
+            for ( ; i < size; i++) {
+                String material = materials.get(i);
+                if (StringUtil.startsWithIgnoreCase(material, arg)) {
+                    if (completion == null) {
+                        completion = new ArrayList<String>();
+                    }
+                    completion.add(material);
+                } else {
+                    break;
+                }
+            }
+
+            if (completion != null) {
+                return completion;
+            }
+        }
+        return ImmutableList.of();
+    }
 }