content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.gwt.shared;
  
  import java.io.UnsupportedEncodingException;
  
  import com.google.common.io.BaseEncoding;
  
  /**
   * Encodes/decodes the configuration passed to the data view popup as a request parameter.<p>
   */
  public final class CmsDataViewParamEncoder {
  
      /** The encoding. */
      public static final BaseEncoding CODEC = BaseEncoding.base64Url().withPadChar('.');
  
      /**
       * Hidden default constructor.<p>
       */
      private CmsDataViewParamEncoder() {
          // do nothing
      }
  
      /**
       * Decodes a string.<p>
       *
       * @param s the encoded string
       * @return the decoded string
       */
      public static String decodeString(String s) {
  
          try {
              return new String(CODEC.decode(s), "UTF-8");
          } catch (UnsupportedEncodingException e) {
              // shouldn't happen
              return null;
          }
      }
  
      /**
       * Encodes a string.<p>
       *
       * @param s the input string
       * @return the encoded string
       */
      public static String encodeString(String s) {
  
          try {
              return CODEC.encode(s.getBytes("UTF-8"));
          } catch (UnsupportedEncodingException e) {
              // shouldn't happen
              return null;
          }
      }
  
  }
  