worldedit = worldedit or {}
local minetest = minetest --local copy of global

worldedit.allocate_old = worldedit.allocate

worldedit.deserialize_old = worldedit.deserialize

worldedit.metasave = function(pos1, pos2, filename)
	local file, err = io.open(filename, "wb")
	if err then return 0 end
	local data, count = worldedit.serialize(pos1, pos2)
	file:write(data)
	file:close()
	return count
end

worldedit.metaload = function(originpos, filename)
	filename = minetest.get_worldpath() .. "/schems/" .. file .. ".wem"
	local file, err = io.open(filename, "wb")
	if err then return 0 end
	local data = file:read("*a")
	return worldedit.deserialize(originpos, data)
end

worldedit.scale = function(pos1, pos2, factor)
	return worldedit.stretch(pos1, pos2, factor, factor, factor)
end

worldedit.valueversion = function(value)
	local version = worldedit.read_header(value)
	if not version or version > worldedit.LATEST_SERIALIZATION_VERSION then
		return 0
	end
	return version
end