registePartial(){
  var partials_path = join(this.theme_path, 'partials')

  // 当前遍历的目录
  var travel_dirs = []
  travel_dirs.push(partials_path) // 遍历根目录

  // 遇到的新目录
  var new_dirs = []
  while(travel_dirs.length > 0)
  {
    travel_dirs.forEach((dir) => {
      var files = readdirSync(dir, {encoding: 'utf-8', withFileTypes: true})
      files.forEach((file) => {
        // 如果是目录则遍历
        if (file.isDirectory())
        {
          new_dirs.push(join(dir, file.name))
          return
        }

        // .hbs
        var reresult = /(?<name>.*)\.hbs$/.exec(relative(partials_path, join(dir, file.name)))
        if (reresult != null)
        {
          var registeName = reresult.groups["name"].split(sep).join('/')

          console.log(`handlebars registe: ${registeName}`);

          // 注册
          this.handlebars.registerPartial(
            registeName,
            readFileSync(join(dir, file.name), {encoding: 'utf-8'})
          )
        }
      })
    })
    // 下次遍历
    travel_dirs = new_dirs
    new_dirs = []
  }
}