rewrite server module

modules/server/util.go

@@ -15,3 +15,17 @@ func markdownToHTML(mdText string) string {
 	renderer := html.NewRenderer(opts)
 	return string(markdown.Render(doc, renderer))
 }
+
+func basePath(base string) string {
+	if base == "" || base == "." {
+		return "/"
+	}
+	return base
+}
+
+func joinBase(base, name string) string {
+	if base == "" {
+		return "/" + name
+	}
+	return base + "/" + name
+}