package main //import "fmt" import "strings" import "sync" import "net/http" type Router struct { mu sync.RWMutex routes map[string]func(http.ResponseWriter, *http.Request) } func NewRouter() *Router { return &Router{ routes: make(map[string]func(http.ResponseWriter, *http.Request)), } } func (router *Router) Handle(pattern string, handle http.Handler) { router.routes[pattern] = handle.ServeHTTP } func (router *Router) HandleFunc(pattern string, handle func(http.ResponseWriter, *http.Request)) { router.routes[pattern] = handle } func (router *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) { router.mu.RLock() defer router.mu.RUnlock() if req.URL.Path[0] != '/' { w.WriteHeader(405) w.Write([]byte("")) return } // Do something on the path to turn slashes facing the wrong way "\" into "/" slashes. If it's bytes, then alter the bytes in place for the maximum speed handle, ok := router.routes[req.URL.Path] if ok { handle(w,req) return } if req.URL.Path[len(req.URL.Path) - 1] == '/' { w.WriteHeader(404) w.Write([]byte("")) return } handle, ok = router.routes[req.URL.Path[:strings.LastIndexByte(req.URL.Path,'/') + 1]] if ok { handle(w,req) return } //fmt.Println(req.URL.Path[:strings.LastIndexByte(req.URL.Path,'/')]) handle, ok = router.routes[req.URL.Path + "/"] if ok { handle(w,req) return } w.WriteHeader(404) w.Write([]byte("")) return }