Various wiki bug fixes (#2996)

* Update macaron

* Various wiki bug fixes

vendor/gopkg.in/macaron.v1/router.go

@@ -82,6 +82,9 @@ type Router struct {
 	groups              []group
 	notFound            http.HandlerFunc
 	internalServerError func(*Context, error)
+
+	// handlerWrapper is used to wrap arbitrary function from Handler to inject.FastInvoker.
+	handlerWrapper func(Handler) Handler
 }
 
 func NewRouter() *Router {
@@ -115,7 +118,7 @@ func (r *Route) Name(name string) {
 	if len(name) == 0 {
 		panic("route name cannot be empty")
 	} else if r.router.namedRoutes[name] != nil {
-		panic("route with given name already exists")
+		panic("route with given name already exists: " + name)
 	}
 	r.router.namedRoutes[name] = r.leaf
 }
@@ -173,7 +176,7 @@ func (r *Router) Handle(method string, pattern string, handlers []Handler) *Rout
 		h = append(h, handlers...)
 		handlers = h
 	}
-	validateHandlers(handlers)
+	handlers = validateAndWrapHandlers(handlers, r.handlerWrapper)
 
 	return r.handle(method, pattern, func(resp http.ResponseWriter, req *http.Request, params Params) {
 		c := r.m.createContext(resp, req)
@@ -251,11 +254,11 @@ func (r *Router) Combo(pattern string, h ...Handler) *ComboRouter {
 	return &ComboRouter{r, pattern, h, map[string]bool{}, nil}
 }
 
-// Configurable http.HandlerFunc which is called when no matching route is
+// NotFound configurates http.HandlerFunc which is called when no matching route is
 // found. If it is not set, http.NotFound is used.
 // Be sure to set 404 response code in your handler.
 func (r *Router) NotFound(handlers ...Handler) {
-	validateHandlers(handlers)
+	handlers = validateAndWrapHandlers(handlers)
 	r.notFound = func(rw http.ResponseWriter, req *http.Request) {
 		c := r.m.createContext(rw, req)
 		c.handlers = make([]Handler, 0, len(r.m.handlers)+len(handlers))
@@ -265,11 +268,11 @@ func (r *Router) NotFound(handlers ...Handler) {
 	}
 }
 
-// Configurable handler which is called when route handler returns
+// InternalServerError configurates handler which is called when route handler returns
 // error. If it is not set, default handler is used.
 // Be sure to set 500 response code in your handler.
 func (r *Router) InternalServerError(handlers ...Handler) {
-	validateHandlers(handlers)
+	handlers = validateAndWrapHandlers(handlers)
 	r.internalServerError = func(c *Context, err error) {
 		c.index = 0
 		c.handlers = handlers
@@ -278,9 +281,21 @@ func (r *Router) InternalServerError(handlers ...Handler) {
 	}
 }
 
+// SetHandlerWrapper sets handlerWrapper for the router.
+func (r *Router) SetHandlerWrapper(f func(Handler) Handler) {
+	r.handlerWrapper = f
+}
+
 func (r *Router) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	if t, ok := r.routers[req.Method]; ok {
-		h, p, ok := t.Match(req.URL.Path)
+		// Fast match for static routes
+		leaf := r.getLeaf(req.Method, req.URL.Path)
+		if leaf != nil {
+			leaf.handle(rw, req, nil)
+			return
+		}
+
+		h, p, ok := t.Match(req.URL.EscapedPath())
 		if ok {
 			if splat, ok := p["*0"]; ok {
 				p["*"] = splat // Easy name.