1 // (c) Bernhard Tittelbach, 2013
15 // ---------- Main Code -------------
23 fmt.Fprintf(os.Stderr, "Usage: door_client_zmq\n")
28 flag.StringVar(&cmd_port_, "cmdport", "tcp://127.0.0.1:3232", "zmq command socket path")
29 flag.StringVar(&sub_port_, "pubport", "pgm://233.252.1.42:4242", "zmq subscribe/listen socket path")
34 func LineReader(out chan <- [][]byte, stdin * os.File) {
35 linescanner := bufio.NewScanner(stdin)
36 linescanner.Split(bufio.ScanLines)
38 for linescanner.Scan() {
39 if err := linescanner.Err(); err != nil {
43 //text := bytes.Fields(linescanner.Bytes()) //this returns a slice (aka pointer, no array deep-copy here)
44 text := bytes.Fields([]byte(linescanner.Text())) //this allocates a string and slices it -> no race-condition with overwriting any data
52 func ByteArrayToString(bb [][]byte) string {
53 b := bytes.Join(bb, []byte(" "))
58 cmd_chans, sub_chans := ZmqsInit(cmd_port_, sub_port_)
59 defer cmd_chans.Close()
60 defer sub_chans.Close()
64 user_input_chan := make(chan [][]byte, 1)
65 go LineReader(user_input_chan, os.Stdin)
66 defer os.Stdin.Close()
70 case input, input_open := (<- user_input_chan):
72 if len(input) == 0 { continue }
73 switch string(input[0]) {
76 fmt.Println("Now listening")
81 cmd_chans.Out() <- input
82 log.Print("input sent")
83 reply := <- cmd_chans.In()
84 log.Print("reply received")
85 fmt.Println(ByteArrayToString(reply))
90 case pubsubstuff := <- sub_chans.In():
91 log.Print("pubsubstuff",pubsubstuff)
92 if len(pubsubstuff) == 0 { continue}
98 fmt.Println(pubsubstuff)