Stripminer

print("insert alot of torches in slot 1 or 2")
term.write("Insert Length: ")
Length = tonumber(read())
print(" ")

local Length = Length
local my_length = 0

local total_width = 0
local done = false

function stripMine()
    turtle.turnRight()
    repeat
        go_forward()
        total_width = total_width + 1
    until total_width == 6
    repeat
        turtle.digUp()
    until turtle.up() == true
    turtle.down()
    turtle.digDown()

    turtle.turnLeft()
    turtle.turnLeft()

    repeat
        turtle.forward()
        total_width = total_width - 1
    until total_width == 0

    repeat
        go_forward()
        total_width = total_width + 1
    until total_width == 6
    repeat
        turtle.digUp()
    until turtle.up() == true
    turtle.down()
    turtle.digDown()

    turtle.turnLeft()
    turtle.turnLeft()

    repeat
        turtle.forward()
        total_width = total_width - 1
    until total_width == 0

    turtle.turnLeft()
end

function go_forward()
    repeat
        turtle.dig()
    until not turtle.detect() == true
    turtle.forward()
    repeat
        turtle.digUp()
    until turtle.up() == true
    turtle.down()
    turtle.digDown()
end

print("start")
repeat
    if  (my_length + 3) < Length then
        print(my_length)
        go_forward()
        go_forward()
        go_forward()
        local item_detail = turtle.getItemDetail(1)
        if string.find(item_detail.name, "torch") ~= nil then
            turtle.select(1)
            turtle.placeDown()
        else
            local item_detail = turtle.getItemDetail(2)
            if string.find(item_detail.name, "torch") ~= nil then
                turtle.select(2)
                turtle.placeDown()
            end
        end
        my_length = my_length + 3
        stripMine()
    else
        turtle.turnLeft()
        turtle.turnLeft()
        repeat
            turtle.forward()
            my_length = my_length - 1
        until my_length == 0
        done = true
    end
until done == true