Add cmd/route.go

cmd/route.go

@@ -0,0 +1,37 @@
+package main
+
+import "net/http"
+
+type Handler interface {
+	Response(*http.Request) *ResponseWithHeader
+}
+
+type routeFunc func(*http.Request) bool
+
+type route struct {
+	routeFunc
+	Handler
+}
+
+type Router struct {
+	rt []route
+}
+
+func (r *Router) Route(req *http.Request) Handler {
+	for _, re := range r.rt {
+		if re.routeFunc(req) {
+			return re.Handler
+		}
+	}
+	return nil
+}
+
+func (r *Router) AddPath(path string, handler Handler) {
+	r.rt = append(r.rt, route{routePath(path), handler})
+}
+
+func routePath(path string) routeFunc {
+	return routeFunc(func(req *http.Request) bool {
+		return req.URL.Path == path
+	})
+}