CatServer/patches/net/minecraft/world/storage/SaveFormatOld.java.patch

--- ../src-base/minecraft/net/minecraft/world/storage/SaveFormatOld.java
+++ ../src-work/minecraft/net/minecraft/world/storage/SaveFormatOld.java
@@ -109,6 +109,24 @@
         }
     }
 
+    //Forge: Special version of the above that runs during actual world loading and not metadata gathering.
+    public static WorldInfo loadAndFix(File file, DataFixer fixer, SaveHandler save)
+    {
+        try
+        {
+            NBTTagCompound nbt = CompressedStreamTools.readCompressed(new FileInputStream(file));
+            WorldInfo info = new WorldInfo(fixer.process(FixTypes.LEVEL, nbt.getCompoundTag("Data")));
+            net.minecraftforge.fml.common.FMLCommonHandler.instance().handleWorldDataLoad(save, info, nbt);
+            return info;
+        }
+        catch (net.minecraftforge.fml.common.StartupQuery.AbortedException e) { throw e; }
+        catch (Exception exception)
+        {
+            LOGGER.error((String)("Exception reading " + file), (Throwable)exception);
+            return null;
+        }
+    }
+
     @SideOnly(Side.CLIENT)
     public void renameWorld(String dirName, String newName)
     {