Convert CPU-Z output to actual .rom file

frickoffcpuz.lua

--!/usr/bin/env lua
---@diagnostic disable: need-check-nil

-- frickoffcpuz.lua
--
-- Converts BIOS file generated from CPU-Z to actual BIOS file so you
-- can use it with many programs.
-- CPU-Z will generate txt file with both binary data and ASCII data,
-- but doesn't work with many programs as they except binary data.
--
-- Created by github.com/EggToaster
-- Please credit me if you are going to use this code in paid software.
-- Not a requirement, but will be cool.
-- Not compiling and not obfusacting this .lua file and keeping
-- all comments including this one counts as credited for this file.

-- https://stackoverflow.com/questions/9137415/lua-writing-hexadecimal-values-as-a-binary-file
-- Answer provided by jpjacobs.
-- Originally named writeHex. Modified part of it.
local function tobinary(str)
    local r = ""
    for byte in str:gmatch'%x%x' do
        r = r .. string.char(tonumber(byte,16))
    end
    return r
end



local o = io.open(arg[1],"r")

-- Assuming that file contains 10 lines of information at first, and
-- 11th line is start for actual data.
---@diagnostic disable-next-line: discard-returns
for i = 1, 11 do o:read("l") end

local s = o:read("a")
o:close()


s = s:gsub("\r","")

local sss = ""

for ss in string.gmatch(s,"([^\n]+)") do
    ss = ss:sub(6,ss:len()-18)
    sss = sss..ss
end

sss = sss:gsub(" ","")

local f = io.open(arg[2],"wb")
f:write(tobinary(sss))
f:close()
print("Done!")