From de26cd1000033d3a6049a13ab5193ec93823f938 Mon Sep 17 00:00:00 2001
From: preble <preble@gmail.com>
Date: Thu, 14 Oct 2010 22:25:18 -0400
Subject: [PATCH] Added code to fix broken Minecraft level.dat files with
 Inventory list type of byte.

---
 Classes/IJMinecraftLevel.m | 9 +++++++++
 Classes/NBTContainer.m     | 4 ++++
 2 files changed, 13 insertions(+)

diff --git a/Classes/IJMinecraftLevel.m b/Classes/IJMinecraftLevel.m
index bf308fa..ed598f9 100644
--- a/Classes/IJMinecraftLevel.m
+++ b/Classes/IJMinecraftLevel.m
@@ -56,6 +56,15 @@
 {
 	NSMutableArray *newChildren = [NSMutableArray array];
 	NBTContainer *inventoryList = [self inventoryList];
+	
+	if (inventoryList.listType != NBTTypeCompound)
+	{
+		// There appears to be a bug in the way Minecraft writes empty inventory lists; it appears to
+		// set the list type to 'byte', so we will correct it here.
+		NSLog(@"%s Fixing inventory list type; was %d.", __PRETTY_FUNCTION__, inventoryList.listType);
+		inventoryList.listType = NBTTypeCompound;
+	}
+	
 	for (IJInventoryItem *invItem in newInventory)
 	{
 		NSArray *listItems = [NSArray arrayWithObjects:
diff --git a/Classes/NBTContainer.m b/Classes/NBTContainer.m
index 10c9983..bfe9cc8 100644
--- a/Classes/NBTContainer.m
+++ b/Classes/NBTContainer.m
@@ -270,6 +270,10 @@
 			{
 				[self appendDouble:[item doubleValue] toData:data];
 			}
+			else if (listType == NBTTypeByte)
+			{
+				[self appendByte:[item unsignedCharValue] toData:data];
+			}
 			else
 			{
 				NSLog(@"Unhandled list type: %d", listType);