From 2ecdd6cb1dd05b5627cbee32b357cfc15594809b Mon Sep 17 00:00:00 2001
From: Anthony Zhang <azhang9@gmail.com>
Date: Thu, 19 Jul 2012 22:54:26 -0400
Subject: Re-add support for the old WorldEdit save format on a load-only
 basis. Implemented as worldedit.deserialize_old(), and documented in
 README.md. //load will now transparently detect these files and load them
 correctly.

---
 functions.lua | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'functions.lua')

diff --git a/functions.lua b/functions.lua
index b752b06..1e727db 100644
--- a/functions.lua
+++ b/functions.lua
@@ -246,4 +246,35 @@ worldedit.deserialize = function(originpos, value)
 		count = count + 1
 	end
 	return count
+end
+
+--loads the nodes represented by string `value` at position `originpos`, returning the number of nodes deserialized
+--based on [table.save/table.load](http://lua-users.org/wiki/SaveTableToFile) by ChillCode, available under the MIT license (GPL compatible)
+worldedit.deserialize_old = function(originpos, value)
+	--obtain the node table
+	local count = 0
+	local get_tables = loadstring(value)
+	if get_tables == nil then --error loading value
+		return count
+	end
+	local tables = get_tables()
+
+	--transform the node table into an array of nodes
+	for i = 1, #tables do
+		for j, v in pairs(tables[i]) do
+			if type(v) == "table" then
+				tables[i][j] = tables[v[1]]
+			end
+		end
+	end
+
+	--load the node array
+	local env = minetest.env
+	for i, v in ipairs(tables[1]) do
+		local pos = v[1]
+		pos.x, pos.y, pos.z = originpos.x + pos.x, originpos.y + pos.y, originpos.z + pos.z
+		env:add_node(pos, v[2])
+		count = count + 1
+	end
+	return count
 end
\ No newline at end of file
-- 
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