func New(options ...func(*matcher)) *muxy.Router {
m := &matcher{
root: &node{edges: map[string]*node{}},
patterns: map[*muxy.Route]*pattern{},
notFoundHandler: muxy.HandlerFunc(notFound),
}
for _, o := range options {
o(m)
}
return muxy.New(m)
}
// allowHandler returns a handler that sets a header with the given
// status code and allowed methods.
func allowHandler(handlers map[string]muxy.Handler, code int) muxy.Handler {
allowed := make([]string, len(handlers)+1)
allowed[0] = "OPTIONS"
i := 1
for m, _ := range handlers {
if m != "" && m != "OPTIONS" {
allowed[i] = m
i++
}
}
return muxy.HandlerFunc(func(c context.Context, w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
w.Header().Set("Allow", strings.Join(allowed[:i], ", "))
w.WriteHeader(code)
fmt.Fprintln(w, code, http.StatusText(code))
})
}