From 42c27b8845649c4a45bc3463726ba1733a59e3f5 Mon Sep 17 00:00:00 2001
From: tterrag <tterrag1098@gmail.com>
Date: Thu, 25 Apr 2019 15:52:02 -0400
Subject: [PATCH] Change default username to 'Dev', add ability to replace '#'
 with randomized numbers

---
 .../minecraftforge/userdev/LaunchTesting.java | 23 +++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/userdev/java/net/minecraftforge/userdev/LaunchTesting.java b/src/userdev/java/net/minecraftforge/userdev/LaunchTesting.java
index 622e5b1a0..037a2a165 100644
--- a/src/userdev/java/net/minecraftforge/userdev/LaunchTesting.java
+++ b/src/userdev/java/net/minecraftforge/userdev/LaunchTesting.java
@@ -31,10 +31,13 @@ import java.lang.reflect.Field;
 import java.net.Proxy;
 import java.util.Arrays;
 import java.util.Locale;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 import org.apache.logging.log4j.LogManager;
 
 public class LaunchTesting
-{
+{    
     public static void main(String... args) throws InterruptedException
     {
         final String markerselection = System.getProperty("forge.logging.markers", "");
@@ -68,7 +71,18 @@ public class LaunchTesting
 
             if (!lst.hasValue("accessToken")) {
                 if (!login(lst)) {
-                    lst.putLazy("username", "Test");
+                    String username = lst.get("username");
+                    if (username != null) { // Replace '#' placeholders with random numbers
+                        Matcher m = Pattern.compile("#+").matcher(username);
+                        StringBuffer replaced = new StringBuffer();
+                        while (m.find()) {
+                            m.appendReplacement(replaced, getRandomNumbers(m.group().length()));
+                        }
+                        m.appendTail(replaced);
+                        lst.put("username", replaced.toString());
+                    } else {
+                        lst.putLazy("username", "Dev");
+                    }
                     lst.put("accessToken", "DONT_CRASH");
                     lst.put("userProperties", "{}");
                 }
@@ -85,6 +99,11 @@ public class LaunchTesting
         Thread.sleep(10000);// Why do we have this? -Lex 03/06/19
     }
 
+    private static String getRandomNumbers(int length)
+    {   // Generate a time-based random number, to mimic how n.m.client.Main works
+        return Long.toString(System.nanoTime() % (int) Math.pow(10, length));
+    }
+
     private static void hackNatives()
     {
         String paths = System.getProperty("java.library.path");