Paper/CraftBukkit-Patches/0156-Use-Map-for-getPlayer-String-lookup.patch

From 6a4b038a8cf73929c980c8dfd83ea5fea8078a13 Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Mon, 13 Jul 2015 19:05:15 +1000
Subject: [PATCH] Use Map for getPlayer(String) lookup.


diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
index 9a5549d..d3d19dd 100644
--- a/src/main/java/net/minecraft/server/PlayerList.java
+++ b/src/main/java/net/minecraft/server/PlayerList.java
@@ -65,6 +65,7 @@ public abstract class PlayerList {
 
     // CraftBukkit start
     private CraftServer cserver;
+    private final Map<String,EntityPlayer> playersByName = new org.spigotmc.CaseInsensitiveMap<EntityPlayer>();
 
     public PlayerList(MinecraftServer minecraftserver) {
         this.cserver = minecraftserver.server = new CraftServer(minecraftserver, this);
@@ -287,6 +288,7 @@ public abstract class PlayerList {
 
     public void onPlayerJoin(EntityPlayer entityplayer, String joinMessage) { // CraftBukkit added param
         this.players.add(entityplayer);
+        this.playersByName.put(entityplayer.getName(), entityplayer); // Spigot
         this.j.put(entityplayer.getUniqueID(), entityplayer);
         // this.sendAll(new PacketPlayOutPlayerInfo(PacketPlayOutPlayerInfo.EnumPlayerInfoAction.ADD_PLAYER, new EntityPlayer[] { entityplayer})); // CraftBukkit - replaced with loop below
         WorldServer worldserver = this.server.getWorldServer(entityplayer.dimension);
@@ -358,6 +360,7 @@ public abstract class PlayerList {
         worldserver.kill(entityplayer);
         worldserver.getPlayerChunkMap().removePlayer(entityplayer);
         this.players.remove(entityplayer);
+        this.playersByName.remove(entityplayer.getName()); // Spigot
         UUID uuid = entityplayer.getUniqueID();
         EntityPlayer entityplayer1 = (EntityPlayer) this.j.get(uuid);
 
@@ -508,6 +511,7 @@ public abstract class PlayerList {
         // entityplayer.u().getTracker().untrackEntity(entityplayer); // CraftBukkit
         entityplayer.u().getPlayerChunkMap().removePlayer(entityplayer);
         this.players.remove(entityplayer);
+        this.playersByName.remove(entityplayer.getName()); // Spigot
         this.server.getWorldServer(entityplayer.dimension).removeEntity(entityplayer);
         BlockPosition blockposition = entityplayer.getBed();
         boolean flag1 = entityplayer.isRespawnForced();
@@ -603,6 +607,7 @@ public abstract class PlayerList {
             worldserver.getPlayerChunkMap().addPlayer(entityplayer1);
             worldserver.addEntity(entityplayer1);
             this.players.add(entityplayer1);
+            this.playersByName.put(entityplayer1.getName(), entityplayer1); // Spigot
             this.j.put(entityplayer1.getUniqueID(), entityplayer1);
         }
         // Added from changeDimension
@@ -1020,19 +1025,7 @@ public abstract class PlayerList {
     }
 
     public EntityPlayer getPlayer(String s) {
-        Iterator iterator = this.players.iterator();
-
-        EntityPlayer entityplayer;
-
-        do {
-            if (!iterator.hasNext()) {
-                return null;
-            }
-
-            entityplayer = (EntityPlayer) iterator.next();
-        } while (!entityplayer.getName().equalsIgnoreCase(s));
-
-        return entityplayer;
+        return this.playersByName.get(s); // Spigot
     }
 
     public void sendPacketNearby(double d0, double d1, double d2, double d3, int i, Packet packet) {
diff --git a/src/main/java/org/spigotmc/CaseInsensitiveHashingStrategy.java b/src/main/java/org/spigotmc/CaseInsensitiveHashingStrategy.java
new file mode 100644
index 0000000..aafdd36
--- /dev/null
+++ b/src/main/java/org/spigotmc/CaseInsensitiveHashingStrategy.java
@@ -0,0 +1,18 @@
+package org.spigotmc;
+
+import gnu.trove.strategy.HashingStrategy;
+
+class CaseInsensitiveHashingStrategy implements HashingStrategy {
+
+    static final CaseInsensitiveHashingStrategy INSTANCE = new CaseInsensitiveHashingStrategy();
+
+    @Override
+    public int computeHashCode(Object object) {
+        return ((String) object).toLowerCase().hashCode();
+    }
+
+    @Override
+    public boolean equals(Object o1, Object o2) {
+        return o1.equals(o2) || (o1 instanceof String && o2 instanceof String && ((String) o1).toLowerCase().equals(((String) o2).toLowerCase()));
+    }
+}
diff --git a/src/main/java/org/spigotmc/CaseInsensitiveMap.java b/src/main/java/org/spigotmc/CaseInsensitiveMap.java
new file mode 100644
index 0000000..1934fd5
--- /dev/null
+++ b/src/main/java/org/spigotmc/CaseInsensitiveMap.java
@@ -0,0 +1,15 @@
+package org.spigotmc;
+
+import gnu.trove.map.hash.TCustomHashMap;
+import java.util.Map;
+
+public class CaseInsensitiveMap<V> extends TCustomHashMap<String, V> {
+
+    public CaseInsensitiveMap() {
+        super(CaseInsensitiveHashingStrategy.INSTANCE);
+    }
+
+    public CaseInsensitiveMap(Map<? extends String, ? extends V> map) {
+        super(CaseInsensitiveHashingStrategy.INSTANCE, map);
+    }
+}
-- 
2.1.4