go http server with regex match router

goserver_regexp.go

package main

import (
 "net/http"
 "fmt"
 "html"
 "regexp"
 "log"
 "os"
 "time"
)

var layout = "Jan 2, 2006 at 3:04:01pm (MST)"
var logger = log.New(os.Stdout, time.Now().Format(layout)+" => ", log.Lshortfile)

var routers =map[string]func(http.ResponseWriter, *http.Request){
   "^/?$": hellohandle,
   "^/test/?$": testhandle,
   "^/regexp/[[:digit:]]/(edit|save)": regexphandle,
}

// define some httphandler

func handlerouters(w http.ResponseWriter, r *http.Request){
 logger.Printf("%q, %q, %q", r.RemoteAddr, r.Method, r.URL.Path)
 err := false
 for k,v := range routers {
  matched, _ := regexp.MatchString(k,r.URL.Path)
  if matched == true {
    v(w,r)
    err = true
  }
 }
 if err == false {
 http.NotFound(w,r)
 }
}

func hellohandle(w http.ResponseWriter, r *http.Request){
  fmt.Fprintf(w, "test, %q", html.EscapeString(r.URL.Path))
}

func testhandle(w http.ResponseWriter, r *http.Request){
 fmt.Fprintf(w, "test, %q", html.EscapeString(r.URL.Path))
}

func regexphandle(w http.ResponseWriter, r *http.Request){
  fmt.Fprintf(w, "regex, %q", html.EscapeString(r.URL.Path))
}

//define function to add router for http server
func addrouter(sm *http.ServeMux, pattern string, handfunc func(http.ResponseWriter, *http.Request)) {
	sm.HandleFunc(pattern, handfunc)
}

func main() {
	router := http.NewServeMux()
	addrouter(router, "/", handlerouters)
	server := &http.Server{
		Addr:           ":8000",
		Handler:        router,
		ReadTimeout:    10 * time.Second,
		WriteTimeout:   10 * time.Second,
		MaxHeaderBytes: 1 << 20,
	}
	logger.Printf("starting http service on port 8000")
	go server.ListenAndServe()
	select {}
}