add gui example.

example/example.go

@@ -0,0 +1,75 @@
+package main
+
+import (
+	"fmt"
+	"flag"
+	"github.com/kless/go-readin/readin"
+	"github.com/mattn/go-xmpp"
+	"github.com/mattn/go-iconv/iconv"
+	"log"
+	"os"
+	"strings"
+)
+
+var server   = flag.String("server", "talk.google.com:443", "server")
+var username = flag.String("username", "", "username")
+var password = flag.String("password", "", "password")
+
+func fromUTF8(s string) string {
+	ic, err := iconv.Open("char", "UTF-8")
+	if err != nil {
+		return s
+	}
+	defer ic.Close()
+	ret, _ := ic.Conv(s)
+	return ret
+}
+
+func toUTF8(s string) string {
+	ic, err := iconv.Open("UTF-8", "char")
+	if err != nil {
+		return s
+	}
+	defer ic.Close()
+	ret, _ := ic.Conv(s)
+	return ret
+}
+
+func main() {
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "usage: example [options]\n")
+		flag.PrintDefaults()
+		os.Exit(2)
+	}
+	flag.Parse()
+	if *username == "" || *password == "" {
+		flag.Usage()
+	}
+
+	talk, err := xmpp.NewClient(*server, *username, *password)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	go func() {
+		for {
+			chat, err := talk.Recv()
+			if err != nil {
+				log.Fatal(err)
+			}
+			fmt.Println(chat.Remote, fromUTF8(chat.Text))
+		}
+	}()
+	for {
+		line, err := readin.RepeatPrompt("")
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err.String())
+			continue
+		}
+
+		tokens := strings.SplitN(line, " ", 2)
+		if len(tokens) == 2 {
+			talk.Send(xmpp.Chat{Remote: tokens[0], Type: "chat", Text: toUTF8(tokens[1])})
+		}
+	}
+}