Use vfsgen instead of go-bindata (#7080)

* use vfsgen instead of go-bindata

* fix templates

* fix fmt

* vendor vsfgen

modules/templates/main.go

@@ -0,0 +1,23 @@
+// +build ignore
+
+package main
+
+import (
+	"log"
+	"net/http"
+
+	"github.com/shurcooL/vfsgen"
+)
+
+func main() {
+	var fsTemplates http.FileSystem = http.Dir("../../templates")
+	err := vfsgen.Generate(fsTemplates, vfsgen.Options{
+		PackageName:  "templates",
+		BuildTags:    "bindata",
+		VariableName: "Assets",
+		Filename:     "bindata.go",
+	})
+	if err != nil {
+		log.Fatal("%v", err)
+	}
+}

modules/templates/static.go

@@ -203,3 +203,21 @@ func Mailer() *template.Template {
 
 	return templates
 }
+
+func Asset(name string) ([]byte, error) {
+	f, err := Assets.Open("/" + name)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+	return ioutil.ReadAll(f)
+}
+
+func AssetNames() []string {
+	realFS := Assets.(vfsgen۰FS)
+	var results = make([]string, 0, len(realFS))
+	for k := range realFS {
+		results = append(results, k[1:])
+	}
+	return results
+}

modules/templates/templates.go

@@ -4,7 +4,5 @@
 
 package templates
 
-//go:generate go-bindata -tags "bindata" -ignore "\\.go" -pkg "templates" -o "bindata.go" ../../templates/...
+//go:generate go run -mod=vendor main.go
 //go:generate go fmt bindata.go
-//go:generate sed -i.bak s/..\/..\/templates\/// bindata.go
-//go:generate rm -f bindata.go.bak