TTLib

function restock ()
  n = turtle.getSelectedSlot()
  if turtle.getItemSpace( n ) > 60 then
    n1 = n + 1
    turtle.select( n1 )
    turtle.placeUp()
    turtle.select( n )
    turtle.suckUp( turtle.getItemSpace( n ) )
    turtle.select( n1 )
    turtle.digUp()
    turtle.select( n )
  end
end

function placeRow ( n )
  for a = 1,n do
    turtle.placeDown()
    restock()
    if a < n then turtle.forward() end
  end
end

function nextRowLeft ()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnLeft()
end

function nextRowRight ()
  turtle.turnRight()
  turtle.forward()
  turtle.turnRight()
end