printer

args = {...}
textdata = args[1]

slot = 1
blocks = 0

function placer(...)
    while turtle.getItemCount(slot) == 0 do
        slot = slot + 1
        if slot == 16 then
            turtle.select(slot)
            turtle.placeUp()
            for i = 1, 15 do
                turtle.suckUp()
            end
            turtle.digUp()
            slot = 1
        end
        turtle.select(slot)
    end
    turtle.placeDown()
end

for i=1,textdata:len() do
    if string.sub(textdata, i, i) == "p" then
        blocks = blocks + 1
    end
end

print("Use "..tostring(blocks).." blocks.")
print("That is "..tostring((blocks - blocks % 64) / 64).." stacks and "..tostring(blocks % 64).." blocks.")

for i=1,textdata:len() do
    if string.sub(textdata, i, i) == "f" then
        while not turtle.forward() do
            turtle.dig()
            turtle.attack()
        end
    elseif string.sub(textdata, i, i) == "r" then
        turtle.turnRight()
    elseif string.sub(textdata, i, i) == "l" then
        turtle.turnLeft()
    elseif string.sub(textdata, i, i) == "b" then
        turtle.back()
    elseif string.sub(textdata, i, i) == "p" then
        placer()
    elseif string.sub(textdata, i, i) == "u" then
        while not turtle.up() do
            turtle.digUp()
            turtle.attackUp()
        end
    elseif string.sub(textdata, i, i) == "d" then
        while not turtle.down() do
            turtle.digDown()
            turtle.attackDown()
        end
    end
end