adding gres package for resource feature

internal/utilbytes/utilbytes.go

@@ -0,0 +1,26 @@
+// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+// Package utibytes provides some bytes functions for internal usage.
+package utilbytes
+
+import (
+	"bytes"
+	"strconv"
+)
+
+func Export(b []byte) string {
+	buffer := bytes.NewBuffer(nil)
+	buffer.WriteString("[]byte{")
+	for k, v := range b {
+		if k > 0 {
+			buffer.WriteByte(',')
+		}
+		buffer.WriteString(strconv.Itoa(int(v)))
+	}
+	buffer.WriteString("}")
+	return buffer.String()
+}