ftape (tape formatter)

local component = require("component")
local tape = component.tape_drive
local event = require("Event")

if tape.getSize()==0
then
 print("Tape drive is empty!")
 os.exit(1)
end

size = tape.getSize()
label = tape.getLabel()

if label
then
 print("Tape label: "..label.."\nSize "..size.." bytes.")
else
 print("Tape label: N/A\nSize: "..size.." bytes.")
end

print("Don't forget to rewind tape befor format it!")
print("WARNING, all your data will be deleted!")
print("Formating process takes long. Proceed? Y/n")
local _,_,key = event.pull("key_down")

if key~=121 then os.exit(1) end

x = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"

for i=0,size/256
  do
    tape.write(x)
    tape.seek(256)
    print(i.."/"..size/256)
end

print("Tape "..label.." was formatted")