test

local blockName = "log"

function check()
  local success, data = turtle.inspect()
  if success then
  if string.match(data.name,blockName) then
    return true
  end
  print(data.name)
  end
  return false
end

function moveLeft()
  turtle.turnLeft()
  turtle.forward()
  turtle.forward()
  turtle.turnRight()
end

function moveRight()
  turtle.turnRight()
  turtle.forward()
  turtle.forward()
  turtle.turnLeft()
end

function harvest()
  m=0
  if check() then
    turtle.dig()
    turtle.forward()
    --local data = turtle.inspectUp()
    while turtle.detectUp() do
      if m > 5 then
        break
      end
      turtle.digUp()
      turtle.up()
      m=m+1
    end
    while  not turtle.detectDown() do
      turtle.down()
    end
    turtle.back()
    turtle.select(16)
    turtle.place()
    turtle.select(1)
  end
end

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

function contains(str,key)
  if string.match(str,key) then
    return true
  end
  return false
end

function backToStart()
  turtle.turnRight()
  turtle.forward()
  turtle.turnRight()
  for i=0,12 do
    turtle.forward()
  end
  for i=1,16 do
    turtle.select(i)
    turtle.drop()
  end
  turtle.select(1)
  turtle.turnRight()
  turtle.forward()
  turtle.turnLeft()
  for i=1,16 do
    turtle.select(i)
    turtle.drop()
  end
  turtle.select(16)
  turtle.suck()
  turtle.select(1)
  turtle.turnRight()
  turtle.turnRight()
  turtle.forward()
end


function farm()
  for k=0,2 do
    for i=0,6 do
      harvest()
      moveLeft()
      harvest()
    end
    forward()
    for i=0,6 do
      harvest()
      moveRight()
      harvest()
    end
    forward()
  end
  backToStart()
end

while true do
  farm()
end
--backToStart()