Get the current pattern that matched an http.HandleFunc

[smb....@gmail.com]

Is there a way to get the current route that triggered an http.HandleFunc? Maybe something like this?

http.HandleFunc("/foo/", serveFoo)
func serveFoo(rw http.ResponseWriter, req *http.Request) {
    fmt.Println(http.CurrentRoute())
    // Should print "/foo/"
}

The reason I want to get the current route is because I find myself writing code like this often.

if req.URL.Path != "/some-route/" {
    http.NotFound(resp, req)
    return
}
// or
key := req.URL.Path[len("/some-other-route/"):]

It would be nice if the code was a bit more copy-pastable and DRY like this.

if req.URL.Path != http.CurrentRoute() {
    http.NotFound(resp, req)
    return
}
// or
key := req.URL.Path[http.CurrentRoute():]

This is really just a small thing, so I'd rather not bring a whole other dependency into my project (Gorilla Mux).

[Quoc-Viet Nguyen]

How about using http.StripPrefix() http://golang.org/pkg/net/http/#StripPrefix ?

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--
Quoc-Viet Nguyen

[smb....@gmail.com]

Uhh... Sorry, I don't get it. How so?

I tried this, but it didn't work.

http.HandleFunc("/static/", http.StripPrefix("/static/", serveStatic))

[smb....@gmail.com]

Oh, wait. I think I get it.

You mean like the Go blog does it. Like this.

http.Handle("/lib/godoc/", http.StripPrefix("/lib/godoc/", http.HandlerFunc(staticHandler)))

Then, inside staticHandler req.URL.Path will just be the name of my key.

Okay. I still feel a little weird about repeating myself, but this does simplify my code in my HandlerFunc. Interesting...

[Quoc-Viet Nguyen]

Yeah, I don't know if there is a better way than a function like this:

func handle(path string, handler http.Handler) {
http.Handle(path, http.StripPrefix(path, handler)
}

Cheers