批量插入模板标记

	err := filepath.WalkDir("tamplates", func(path string, d fs.DirEntry, err error) error {
		if !d.IsDir() {
			fmt.Println(path)
			f, err := os.OpenFile(path, os.O_RDWR, 0644)
			if err != nil {
				return err
			}
			rw := bufio.NewReadWriter(bufio.NewReader(f), bufio.NewWriter(f))
			buffer := make([]byte, 1024*10)
			n, err := rw.Read(buffer)
			//if err != io.EOF {
			//	return err
			//}

			f.Seek(0, 0)
			path = strings.ReplaceAll(path[6:], "\\", "/")
			rw.WriteString(`{{define "` + path + `"}}` + "\n")
			rw.WriteString(string(buffer[:n]))
			rw.WriteString("\n{{end}}\n")
			rw.Flush()
			return nil
		}

		return err
	})
	fmt.Println(err)