encrypt

local tArgs = {...}

if #tArgs < 2 then
    error("Usage: en <1/2> <path>")
end

if tArgs[1] == "1" then
    local newt = ""
    local rd = fs.open(tArgs[2], "r")
    local txt = rd.readAll()
    rd.close()
    for i = 1, #txt do
        newt = newt..string.char(string.byte(string.sub(txt, i, i))+1)
    end
    local fl = fs.open(tArgs[2], "w")
    fl.write(newt)
    fl.close()
elseif tArgs[1] == "2" then
    local newt = ""
    local rd = fs.open(tArgs[2], "r")
    local txt = rd.readAll()
    rd.close()
    for i = 1, #txt do
        newt = newt..string.char(string.byte(string.sub(txt, i, i))-1)
    end
    local fl = fs.open(tArgs[2], "w")
    fl.write(newt)
    fl.close()
end