Workaround for WorldEdit's sign bug

core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java

@@ -2,6 +2,7 @@ package com.boydti.fawe.object.extent;
 
 import com.boydti.fawe.FaweCache;
 import com.boydti.fawe.util.FaweQueue;
+import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.TaskManager;
 import com.sk89q.worldedit.BlockVector;
 import com.sk89q.worldedit.EditSession;
@@ -93,6 +94,12 @@ public class FastWorldEditExtent extends FaweExtent {
         final int y = location.getBlockY();
         final int z = location.getBlockZ();
         switch (id) {
+            case 63:
+            case 68:
+                if (block.hasNbtData() && !MainUtil.isValidSign(block.getNbtData())) {
+                    queue.setBlock(x, y, z, id, FaweCache.hasData(id) ? (byte) block.getData() : 0);
+                    return true;
+                }
             case 54:
             case 130:
             case 142:
@@ -106,9 +113,7 @@ public class FastWorldEditExtent extends FaweExtent {
             case 138:
             case 176:
             case 177:
-            case 63:
             case 119:
-            case 68:
             case 323:
             case 117:
             case 116:

core/src/main/java/com/boydti/fawe/object/extent/ProcessedWEExtent.java

@@ -5,6 +5,7 @@ import com.boydti.fawe.object.FaweLimit;
 import com.boydti.fawe.object.FawePlayer;
 import com.boydti.fawe.object.RegionWrapper;
 import com.boydti.fawe.util.FaweQueue;
+import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.TaskManager;
 import com.boydti.fawe.util.WEManager;
 import com.sk89q.worldedit.BlockVector;
@@ -108,7 +109,13 @@ public class ProcessedWEExtent extends FaweExtent {
     @Override
     public boolean setBlock(final Vector location, final BaseBlock block) throws WorldEditException {
         final short id = (short) block.getType();
+        boolean nbt = true;
         switch (id) {
+            case 63:
+            case 68:
+                if (block.hasNbtData() && !MainUtil.isValidSign(block.getNbtData())) {
+                    nbt = false;
+                }
             case 54:
             case 130:
             case 142:
@@ -122,9 +129,7 @@ public class ProcessedWEExtent extends FaweExtent {
             case 138:
             case 176:
             case 177:
-            case 63:
             case 119:
-            case 68:
             case 323:
             case 117:
             case 116:
@@ -158,7 +163,7 @@ public class ProcessedWEExtent extends FaweExtent {
                         }
                         return false;
                     }
-                    if (block.hasNbtData()) {
+                    if (block.hasNbtData() && nbt) {
                         final Vector loc = new Vector(location.x, location.y, location.z);
                         queue.addTask(x >> 4, z >> 4, new Runnable() {
                             @Override

core/src/main/java/com/boydti/fawe/util/MainUtil.java

@@ -8,6 +8,7 @@ import com.sk89q.jnbt.EndTag;
 import com.sk89q.jnbt.ListTag;
 import com.sk89q.jnbt.Tag;
 import java.io.File;
+import java.util.Map;
 import java.util.Map.Entry;
 
 public class MainUtil {
@@ -53,12 +54,13 @@ public class MainUtil {
         if (tag instanceof EndTag) {
             return false;
         }
-        if (tag instanceof ListTag) {
+        else if (tag instanceof ListTag) {
-            if (((ListTag) tag).getType() == EndTag.class) {
+            ListTag lt = (ListTag) tag;
+            if ((lt).getType() == EndTag.class) {
                 return false;
             }
         }
-        if (tag instanceof CompoundTag) {
+        else if (tag instanceof CompoundTag) {
             for (Entry<String, Tag> entry : ((CompoundTag) tag).getValue().entrySet()) {
                 if (!isValidTag(entry.getValue())) {
                     return false;
@@ -67,4 +69,9 @@ public class MainUtil {
         }
         return true;
     }
+
+    public static boolean isValidSign(CompoundTag tag) {
+        Map<String, Tag> values = tag.getValue();
+        return values.size() > 4 && values.containsKey("Text1");
+    }
 }