Router a good

router.go

@@ -0,0 +1,46 @@
+package router
+
+import (
+	"errors"
+	"net/http"
+)
+
+type Router struct {
+	t *tree
+}
+
+func New() *Router {
+	return &Router{
+		t: newTree(),
+	}
+}
+
+func (rt *Router) Add(path string, foo http.HandlerFunc) error {
+	return rt.t.Insert(path, foo)
+}
+
+func (rt *Router) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	foo := rt.t.Lookup(r.URL.Path)
+	if foo == nil {
+		http.NotFound(w, r)
+		return
+	}
+	foo(w, r)
+}
+
+func Params(r *http.Request, toSet ...*string) error {
+	params := r.Header[WildcardHeader]
+	if len(params) != len(toSet) {
+		return errors.New("missing params")
+	}
+	for i := range params {
+		if len(params[i]) < 1 {
+			return errors.New("empty params")
+		}
+		if toSet[i] == nil {
+			return errors.New("cannot set nil param")
+		}
+		*toSet[i] = params[i]
+	}
+	return nil
+}