mame/plugins/data/data_command.lua

local dat = {}
local info, ver
local datread = require("data/load_dat")
do
	local buttonchar
	local function convert(str)
		if not buttonchar then buttonchar = require("data/button_char") end
		return buttonchar(str)
	end
	datread, ver = datread.open("command.dat", "#[^V]*Ver[^.:]*[.:]", convert)
end

function dat.check(set, softlist)
	if softlist or not datread then
		return nil
	end
	local status
	status, info = pcall(datread, "cmd", "info", set)
	if not status or not info then
		return nil
	end
	return _("Command")
end

function dat.get()
	return info
end

function dat.ver()
	return ver
end

return dat