Revert "feat: add StaticFileFS (#2749)"

This reverts commit 417b142.

README.md

@@ -1244,8 +1244,7 @@ func main() {
 	router.Static("/assets", "./assets")
 	router.StaticFS("/more_static", http.Dir("my_file_system"))
 	router.StaticFile("/favicon.ico", "./resources/favicon.ico")
-	router.StaticFileFS("/more_favicon.ico", "more_favicon.ico", http.Dir("my_file_system"))
-
+
 	// Listen and serve on 0.0.0.0:8080
 	router.Run(":8080")
 }

routergroup.go

@@ -44,7 +44,6 @@ type IRoutes interface {
 	HEAD(string, ...HandlerFunc) IRoutes
 
 	StaticFile(string, string) IRoutes
-	StaticFileFS(string, string, http.FileSystem) IRoutes
 	Static(string, string) IRoutes
 	StaticFS(string, http.FileSystem) IRoutes
 }
@@ -154,24 +153,12 @@ func (group *RouterGroup) Any(relativePath string, handlers ...HandlerFunc) IRou
 // StaticFile registers a single route in order to serve a single file of the local filesystem.
 // router.StaticFile("favicon.ico", "./resources/favicon.ico")
 func (group *RouterGroup) StaticFile(relativePath, filepath string) IRoutes {
-	return group.staticFileHandler(relativePath, func(c *Context) {
-		c.File(filepath)
-	})
-}
-
-// StaticFileFS works just like `StaticFile` but a custom `http.FileSystem` can be used instead..
-// router.StaticFileFS("favicon.ico", "./resources/favicon.ico", Dir{".", false})
-// Gin by default user: gin.Dir()
-func (group *RouterGroup) StaticFileFS(relativePath, filepath string, fs http.FileSystem) IRoutes {
-	return group.staticFileHandler(relativePath, func(c *Context) {
-		c.FileFromFS(filepath, fs)
-	})
-}
-
-func (group *RouterGroup) staticFileHandler(relativePath string, handler HandlerFunc) IRoutes {
 	if strings.Contains(relativePath, ":") || strings.Contains(relativePath, "*") {
 		panic("URL parameters can not be used when serving a static file")
 	}
+	handler := func(c *Context) {
+		c.File(filepath)
+	}
 	group.GET(relativePath, handler)
 	group.HEAD(relativePath, handler)
 	return group.returnObj()

routergroup_test.go

@@ -111,17 +111,6 @@ func TestRouterGroupInvalidStaticFile(t *testing.T) {
 	})
 }
 
-func TestRouterGroupInvalidStaticFileFS(t *testing.T) {
-	router := New()
-	assert.Panics(t, func() {
-		router.StaticFileFS("/path/:param", "favicon.ico", Dir(".", false))
-	})
-
-	assert.Panics(t, func() {
-		router.StaticFileFS("/path/*param", "favicon.ico", Dir(".", false))
-	})
-}
-
 func TestRouterGroupTooManyHandlers(t *testing.T) {
 	const (
 		panicValue = "too many handlers"
@@ -188,7 +177,6 @@ func testRoutesInterface(t *testing.T, r IRoutes) {
 	assert.Equal(t, r, r.HEAD("/", handler))
 
 	assert.Equal(t, r, r.StaticFile("/file", "."))
-	assert.Equal(t, r, r.StaticFileFS("/static2", ".", Dir(".", false)))
 	assert.Equal(t, r, r.Static("/static", "."))
 	assert.Equal(t, r, r.StaticFS("/static2", Dir(".", false)))
 }

routes_test.go

@@ -325,40 +325,6 @@ func TestRouteStaticFile(t *testing.T) {
 	assert.Equal(t, http.StatusOK, w3.Code)
 }
 
-// TestHandleStaticFile - ensure the static file handles properly
-func TestRouteStaticFileFS(t *testing.T) {
-	// SETUP file
-	testRoot, _ := os.Getwd()
-	f, err := ioutil.TempFile(testRoot, "")
-	if err != nil {
-		t.Error(err)
-	}
-	defer os.Remove(f.Name())
-	_, err = f.WriteString("Gin Web Framework")
-	assert.NoError(t, err)
-	f.Close()
-
-	dir, filename := filepath.Split(f.Name())
-	// SETUP gin
-	router := New()
-	router.Static("/using_static", dir)
-	router.StaticFileFS("/result_fs", filename, Dir(dir, false))
-
-	w := performRequest(router, http.MethodGet, "/using_static/"+filename)
-	w2 := performRequest(router, http.MethodGet, "/result_fs")
-
-	assert.Equal(t, w, w2)
-	assert.Equal(t, http.StatusOK, w.Code)
-	assert.Equal(t, "Gin Web Framework", w.Body.String())
-	assert.Equal(t, "text/plain; charset=utf-8", w.Header().Get("Content-Type"))
-
-	w3 := performRequest(router, http.MethodHead, "/using_static/"+filename)
-	w4 := performRequest(router, http.MethodHead, "/result_fs")
-
-	assert.Equal(t, w3, w4)
-	assert.Equal(t, http.StatusOK, w3.Code)
-}
-
 // TestHandleStaticDir - ensure the root/sub dir handles properly
 func TestRouteStaticListingDir(t *testing.T) {
 	router := New()