Detect some operating systems and CPU architecture via Lua

sys.lua

-- Written by Rabia Alhaffar in June 14, 2021
-- Simple script to detect some operating systems and CPU architecture via Lua! ;)
-- Updated: June 14, 2021
-- Also, I would thank NickWilde263 and Nameless on GitHub for their suggestions! <3

-- https://github.com/NickWilde263
-- https://github.com/truemedian

local sys = {
  arch = "UNKNOWN",
  os = "UNKNOWN"
}

if string.match(package.path, "/storage/emulated/0/") or string.match(package.cpath, "/data/app/") then
  sys.os = "android"
elseif string.match(package.path, "/var/mobile/") then
  sys.os = "ios"
elseif string.match(package.path, "\\") then
  sys.os = "windows"
else
  local sysf = io.popen("uname -a")
  local linux_uname = sysf:read("*a")

  if string.match(linux_uname, "Darwin") then
    sys.os = "macos"
  elseif string.match(linux_uname, "raspberrypi") then
    sys.os = "rpi"
  else
    sys.os = "linux"
  end

  sysf:close()
end

if sys.os == "windows" then
  if (string.match(os.getenv("PROCESSOR_ARCHITECTURE"), "x86")) then
    sys.arch = "x86"
  elseif (string.match(os.getenv("PROCESSOR_ARCHITECTURE"), "ARM")) then
    sys.arch = "arm32"
  elseif (string.match(os.getenv("PROCESSOR_ARCHITECTURE"), "ARM64")) then
    sys.arch = "arm64"
  elseif (string.match(os.getenv("PROCESSOR_ARCHITECTURE"), "AMD64")) then
    sys.arch = "x86_64"
  elseif (string.match(os.getenv("PROCESSOR_ARCHITECTURE"), "IA64")) then
    sys.arch = "ia64"
  elseif (string.match(os.getenv("PROCESSOR_ARCHITECTURE"), "EM64T")) then
    sys.arch = "em64t"
  end
else
  local sysf = io.popen("uname -m")
  local arch = sysf:read("*a")

  if (string.match(arch, "arm32")) then
    sys.arch = "arm32"
  elseif (string.match(arch, "i*86")) then
    sys.arch = "x86"
  elseif (string.match(arch, "aarch64")) then
    sys.arch = "aarch64"
  elseif (string.match(arch, "aarch32") or string.match(arch, "aarch")) then
    sys.arch = "aarch32"
  elseif (string.match(arch, "arm64")) then
    sys.arch = "arm64"
  elseif (string.match(arch, "x86_64")) then
    sys.arch = "x86_64"
  end

  sysf:close()
end

return sys