Method formatCookieLang

src/openlayers/mapping/WebMap.js:5548–5664

* @private * @function WebMap.prototype.formatCookieLang * @description 将从cookie中获取的lang,转换成全称，如zh=>zh-CN * @returns {string} 转换后的语言名称

(cookieLang)

   * @returns {string} 转换后的语言名称
   */
  formatCookieLang(cookieLang) {
    let lang;
    switch (cookieLang) {
      case 'zh':
        lang = 'zh-CN';
        break;
      case 'ar':
        lang = 'ar-EG';
        break;
      case 'bg':
        lang = 'bg-BG';
        break;
      case 'ca':
        lang = 'ca-ES';
        break;
      case 'cs':
        lang = 'cs-CZ';
        break;
      case 'da':
        lang = 'da-DK';
        break;
      case 'de':
        lang = 'de-DE';
        break;
      case 'el':
        lang = 'el-GR';
        break;
      case 'es':
        lang = 'es-ES';
        break;
      case 'et':
        lang = 'et-EE';
        break;
      case 'fa':
        lang = 'fa-IR';
        break;
      case 'fl':
        lang = 'fi-FI';
        break;
      case 'fr':
        lang = 'fr-FR';
        break;
      case 'he':
        lang = 'he-IL';
        break;
      case 'hu':
        lang = 'hu-HU';
        break;
      case 'id':
        lang = 'id-ID';
        break;
      case 'is':
        lang = 'is-IS';
        break;
      case 'it':
        lang = 'it-IT';
        break;
      case 'ja':