nuggets

inputFrom = "above"
outputTo = "below"
workSlot = 0
workCount = 0
craftCount = 0
leftovers = 0

function intDiv(number, divisor)
	count = number
	result = 0

	while count >= 9 do
		result = result+1
		count = count - divisor
	end
	return result
end

function unloadTurtle()
	for i=1,16 do
		if turtle.getItemCount(i) > 0 then
			turtle.select(i)
			returnItems()
		end
	end
end

function suckItems()
	if inputFrom == "above" then
		turtle.suckUp(9)
	else
		turtle.suck(9)
	end
end

function returnItems(count)
	if count == nil then
		count = 64
	end
	if inputFrom == "above" then
		turtle.dropUp(count)
	else
		turtle.drop(count)
	end
end

function unloadCraftedItems()
	if outputTo == "front" then
		turtle.drop()
	else
		turtle.dropDown()
	end
end

print("Version 0.2")

while true do

-- Load items from input chest

	for i=1,16 do
		turtle.select(i)
		suckItems()
		if turtle.getItemCount(i) == 9 then
			workSlot = i
			break
		end
	end

	if workSlot > 0 then
		if workSlot > 0 then
			workCount = turtle.getItemCount(workSlot)

-- Unload all but the workSlot items

			for i=1,16 do
				if i ~= workSlot then
					if turtle.getItemCount(i) > 0 then
						turtle.select(i)
						returnItems()
					end
				end
			end

-- Move work items to slot 16 temporarily

			workCount = turtle.getItemCount(workSlot)
			turtle.select(workSlot)
			turtle.transferTo(16)

-- Work out the numbers

			craftCount = intDiv(workCount, 9)
			leftovers = workCount - (craftCount * 9)


-- Put the leftovers back

			turtle.select(16)
			returnItems(leftovers)

-- Load up the crafting slots

			turtle.transferTo(1, craftCount)
			turtle.transferTo(2, craftCount)
			turtle.transferTo(3, craftCount)
			turtle.transferTo(5, craftCount)
			turtle.transferTo(6, craftCount)
			turtle.transferTo(7, craftCount)
			turtle.transferTo(9, craftCount)
			turtle.transferTo(10, craftCount)
			turtle.transferTo(11, craftCount)

-- Craft it

			turtle.craft()
			turtle.select(16)
			unloadCraftedItems()
		end
	else
		unloadTurtle()
		sleep(600)
	end

	sleep(0)
end