//handleMessageCB brokers messages back to the lua script that asked for them
func handleMessageCB(index int, message LocalPatternMatch) {
l := CBTable[index].Script.State
lmsg := luar.New(l, message)
if err := l.CallByParam(lua.P{
Fn: CBTable[index].Func,
NRet: 0,
Protect: false,
}, lmsg); err != nil {
panic(err)
}
}
//luaMain creates a new lua state for each file in ./lua
//and hands them the globals they need to interact with lazlo
func luaMain(b *lazlo.Broker) {
broker = b
var luaDir *os.File
luaDirName := "lua"
if luaDirInfo, err := os.Stat(luaDirName); err == nil && luaDirInfo.IsDir() {
luaDir, _ = os.Open(luaDirName)
} else {
lazlo.Logger.Error("Couldn't open the Lua Plugin dir: ", err)
}
luaFiles, _ := luaDir.Readdir(0)
for _, f := range luaFiles {
if f.IsDir() {
continue
}
file := fmt.Sprintf("%s/%s", luaDirName, f.Name())
//make a new script entry
script := LuaScript{
Robot: &Robot{
ID: len(LuaScripts),
},
State: lua.NewState(),
}
defer script.State.Close()
// register hear and respond inside this lua state
script.State.SetGlobal("robot", luar.New(script.State, script.Robot))
//script.State.SetGlobal("respond", luar.New(script.State, Respond))
//script.State.SetGlobal("hear", luar.New(script.State, Hear))
LuaScripts = append(LuaScripts, script)
// the lua script will register callbacks to the Cases
if err := script.State.DoFile(file); err != nil {
panic(err)
}
}
//block waiting on events from the broker
for {
index, value, _ := reflect.Select(Cases)
handle(index, value.Interface())
}
}