Minetest - Get Files in a Directory

init.lua

-- return a table of filenames
get_files = function(directory)
	local modpath = minetest.get_modpath("my_mod")
	local output
	if os.getenv('HOME')~=nil then -- linux/mac
		os.execute('\ls -a "'..modpath..'/'..directory..'/" | grep .we > "'..modpath..'/'..directory..'/_files"')
		local file, err = io.open(modpath..'/'..directory..'/_files', "rb")
		if err ~= nil then
			return
		end
		output = file:lines()
	else  -- windows
		output = io.popen('dir "'..modpath..'\\'..directory..'\\*.we" /b'):lines()
	end
    local i, t = 0, {}
    for filename in output do
        i = i + 1
        t[i] = filename
    end
    return t
end

print(dump(get_files()))