Sending a 404 status if there is no content on the page

Probably a hack. I'm not sure how it should be done normally, but I have no other idea how to do it.

http_readers.go

@@ -112,10 +112,19 @@ func handlerHypha(w http.ResponseWriter, rq *http.Request) {
 			contents = views.AttachmentHTML(h) + contents
 		}
 	}
-	util.HTTP200Page(w,
-		views.BaseHTML(
-			util.BeautifulName(hyphaName),
-			views.HyphaHTML(rq, h, contents),
-			u,
-			openGraph))
+	if contents == "" {
+		util.HTTP404Page(w,
+			views.BaseHTML(
+				util.BeautifulName(hyphaName),
+				views.HyphaHTML(rq, h, contents),
+				u,
+				openGraph))
+	} else {
+		util.HTTP200Page(w,
+			views.BaseHTML(
+				util.BeautifulName(hyphaName),
+				views.HyphaHTML(rq, h, contents),
+				u,
+				openGraph))
+	}
 }

util/util.go

@@ -53,6 +53,13 @@ func ShorterPath(path string) string {
 	return path
 }
 
+// HTTP404Page writes a 404 error in the status, needed when no content is found on the page.
+func HTTP404Page(w http.ResponseWriter, page string) {
+	w.Header().Set("Content-Type", "text/html;charset=utf-8")
+	w.WriteHeader(http.StatusNotFound)
+	w.Write([]byte(page))
+}
+
 // HTTP200Page wraps some frequently used things for successful 200 responses.
 func HTTP200Page(w http.ResponseWriter, page string) {
 	w.Header().Set("Content-Type", "text/html;charset=utf-8")