From 5abce36d076e7384cfac4a0659d3d95e8dc1d05c Mon Sep 17 00:00:00 2001
From: Tux <write@imaginarycode.com>
Date: Thu, 19 May 2016 18:05:33 -0600
Subject: [PATCH] Micro-optimizations

- PluginManager.dispatchCommand() avoids regex while splitting commands. Java 7 introduced an optimized String.split() that should be used instead (affects command dispatch).
- Avoid regex in getLocale() by changing from replaceAll(String, String) to replaceAll(char, char)
- Don't attempt to format arguments when there are none provided
- Don't create a data input stream for every plugin message we get from servers
- Optimise replacing dashes in UUID's

diff --git a/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java b/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
index 71a5a158..520ee315 100644
--- a/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
+++ b/api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
@@ -42,7 +42,6 @@ import org.yaml.snakeyaml.introspector.PropertyUtils;
 public class PluginManager
 {
 
-    private static final Pattern argsSplit = Pattern.compile( " " );
     /*========================================================================*/
     private final ProxyServer proxy;
     /*========================================================================*/
@@ -126,7 +125,7 @@ public class PluginManager
      */
     public boolean dispatchCommand(CommandSender sender, String commandLine, List<String> tabResults)
     {
-        String[] split = argsSplit.split( commandLine, -1 );
+        String[] split = commandLine.split(" ", -1);
         // Check for chat that only contains " "
         if ( split.length == 0 )
         {
diff --git a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
index c03941ed..226af98b 100644
--- a/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
+++ b/proxy/src/main/java/net/md_5/bungee/BungeeCord.java
@@ -493,7 +493,9 @@ public class BungeeCord extends ProxyServer
         String translation = "<translation '" + name + "' missing>";
         try
         {
-            translation = MessageFormat.format( customBundle != null && customBundle.containsKey( name ) ? customBundle.getString( name ) : baseBundle.getString( name ), args );
+            final String string = customBundle != null && customBundle.containsKey( name ) ? customBundle.getString( name ) : baseBundle.getString( name );
+
+            translation = ( args.length == 0 ) ? string : MessageFormat.format( string, args );
         } catch ( MissingResourceException ex )
         {
         }
diff --git a/proxy/src/main/java/net/md_5/bungee/UserConnection.java b/proxy/src/main/java/net/md_5/bungee/UserConnection.java
index 74c5a089..28e79933 100644
--- a/proxy/src/main/java/net/md_5/bungee/UserConnection.java
+++ b/proxy/src/main/java/net/md_5/bungee/UserConnection.java
@@ -546,7 +546,7 @@ public final class UserConnection implements ProxiedPlayer
     @Override
     public Locale getLocale()
     {
-        return ( locale == null && settings != null ) ? locale = Locale.forLanguageTag( settings.getLocale().replaceAll( "_", "-" ) ) : locale;
+        return ( locale == null && settings != null ) ? locale = Locale.forLanguageTag( settings.getLocale().replace( '_', '-' ) ) : locale;
     }
 
     @Override
diff --git a/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java b/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
index a92b806c..19fd3b3b 100644
--- a/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
+++ b/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
@@ -222,7 +222,6 @@ public class DownstreamBridge extends PacketHandler
     @Override
     public void handle(PluginMessage pluginMessage) throws Exception
     {
-        DataInput in = pluginMessage.getStream();
         PluginMessageEvent event = new PluginMessageEvent( con.getServer(), con, pluginMessage.getTag(), pluginMessage.getData().clone() );
 
         if ( bungee.getPluginManager().callEvent( event ).isCancelled() )
@@ -249,6 +248,7 @@ public class DownstreamBridge extends PacketHandler
 
         if ( pluginMessage.getTag().equals( "BungeeCord" ) )
         {
+            DataInput in = pluginMessage.getStream();
             ByteArrayDataOutput out = ByteStreams.newDataOutput();
             String subChannel = in.readUTF();
 
-- 
2.14.1