From 75624e914d39270de5805777883611d434357ae4 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 6 Jun 2019 17:40:30 -0500
Subject: [PATCH] Allow color codes on signs

---
 .../java/net/minecraft/server/EntityPlayer.java    |  1 +
 .../net/minecraft/server/PlayerConnection.java     |  8 ++++++++
 .../java/net/minecraft/server/TileEntitySign.java  | 14 ++++++++++++++
 .../java/net/pl3x/purpur/PurpurWorldConfig.java    |  5 +++++
 4 files changed, 28 insertions(+)

diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 9a61dda82..4c1ccdd6f 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -1120,6 +1120,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     @Override
     public void openSign(TileEntitySign tileentitysign) {
         tileentitysign.a((EntityHuman) this);
+        if (world.purpurConfig.allowSignColors) this.playerConnection.sendPacket(tileentitysign.getTranslatedUpdatePacket()); // Purpur
         this.playerConnection.sendPacket(new PacketPlayOutOpenSignEditor(tileentitysign.getPosition()));
     }
 
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index a1ce2d2e0..213f7992d 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -2575,6 +2575,14 @@ public class PlayerConnection implements PacketListenerPlayIn {
                     }
                 }
                 // Paper end
+                // Purpur start
+                if (worldserver.purpurConfig.allowSignColors) {
+                    lines[i] = astring[i];
+                    if (player.hasPermission("purpur.sign.color")) lines[i] = lines[i].replaceAll("(?i)&([0-9a-fr])", "\u00a7$1");
+                    if (player.hasPermission("purpur.sign.style")) lines[i] = lines[i].replaceAll("(?i)&([l-or])", "\u00a7$1");
+                    if (player.hasPermission("purpur.sign.magic")) lines[i] = lines[i].replaceAll("(?i)&([kr])", "\u00a7$1");
+                } else
+                // Purpur end
                 lines[i] = SharedConstants.a(astring[i]); //Paper - Replaced with anvil color stripping method to stop exploits that allow colored signs to be created.
             }
             SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.server.getPlayer(this.player), lines);
diff --git a/src/main/java/net/minecraft/server/TileEntitySign.java b/src/main/java/net/minecraft/server/TileEntitySign.java
index 5eb86c434..8810a1120 100644
--- a/src/main/java/net/minecraft/server/TileEntitySign.java
+++ b/src/main/java/net/minecraft/server/TileEntitySign.java
@@ -119,6 +119,20 @@ public class TileEntitySign extends TileEntity implements ICommandListener { //
         this.g[i] = null;
     }
 
+    // Purpur start
+    public PacketPlayOutTileEntityData getTranslatedUpdatePacket() {
+        NBTTagCompound nbt = this.b();
+        for (int i = 0; i < 4; ++i) {
+            String line = lines[i].getLegacyString().replace("\u00a7", "&");
+            if (line.endsWith("&r")) {
+                line = line.substring(0, line.length() - 2);
+            }
+            nbt.setString("Text" + (i + 1), IChatBaseComponent.ChatSerializer.a(new ChatMessage(line)));
+        }
+        return new PacketPlayOutTileEntityData(position, 9, nbt);
+    }
+    // Purpur end
+
     @Nullable
     @Override
     public PacketPlayOutTileEntityData getUpdatePacket() {
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index 6cb887ca8..061b02e45 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -95,4 +95,9 @@ public class PurpurWorldConfig {
     private void campfiresGoOutInRain() {
         campfiresGoOutInRain = getBoolean("campfires-go-out-in-rain", campfiresGoOutInRain);
     }
+
+    public boolean allowSignColors = false;
+    private void allowSignColors() {
+        allowSignColors = getBoolean("allow-sign-colors", allowSignColors);
+    }
 }
-- 
2.24.0