From 0573f00a8deb9cfa86e7829724a934c87be06f53 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] Signs allow color codes

---
 .../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    |  2 ++
 4 files changed, 25 insertions(+)

diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index e7bfbc3307..a2f239b49e 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -1126,6 +1126,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     @Override
     public void openSign(TileEntitySign tileentitysign) {
         tileentitysign.a((EntityHuman) this);
+        if (world.purpurConfig.signAllowColors) 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 c6bd623921..5aada89c24 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -2580,6 +2580,14 @@ public class PlayerConnection implements PacketListenerPlayIn {
                     }
                 }
                 // Paper end
+                // Purpur start
+                if (worldserver.purpurConfig.signAllowColors) {
+                    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 099d98e04c..19d76c8cce 100644
--- a/src/main/java/net/minecraft/server/TileEntitySign.java
+++ b/src/main/java/net/minecraft/server/TileEntitySign.java
@@ -89,6 +89,20 @@ public class TileEntitySign extends TileEntity implements ICommandListener { //
         this.g[i] = null;
     }
 
+    // Purpur start
+    public PacketPlayOutTileEntityData getTranslatedUpdatePacket() {
+        NBTTagCompound nbt = save(new NBTTagCompound());
+        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.toJson(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 dfa6318039..7395abfb6f 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -76,8 +76,10 @@ public class PurpurWorldConfig {
         farmlandGetsMoistFromBelow = getBoolean("blocks.farmland.gets-moist-from-below", farmlandGetsMoistFromBelow);
     }
 
+    public boolean signAllowColors = false;
     public boolean signRightClickEdit = false;
     private void signSettings() {
+        signAllowColors = getBoolean("blocks.sign.allow-colors", signAllowColors);
         signRightClickEdit = getBoolean("blocks.sign.right-click-edit", signRightClickEdit);
     }
 
-- 
2.24.0