Pote: The Portable Game FS Extension

main.lua

local pote = require("pote")

function love.load(args)
	pote.mount(args)

	print(love.filesystem.read("app/main.lua"))
end

pote.lua

local ffi = require("ffi")
local liblove = (jit.os == "Windows" and ffi.load("love")) or ffi.C

local pote = {}

ffi.cdef([[
	int PHYSFS_mount(const char* dir, const char* mountPoint, int append);
]])

function pote.mount(args)
	local path = args[1]

	if (love.filesystem.isFused()) then
		path = path:match("^(.*)[\\/].-$")
	end

	liblove.PHYSFS_mount(path, "app", 1)
end

function pote.unmount(args)
	love.filesystem.unmount("app")
end

return pote