text: /*
   * MIT License
   *
   * Copyright (c) 2019 pengwang7(https://github.com/pengwang7/libatp)
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #ifndef __ATP_BASE64_H__
  #define __ATP_BASE64_H__
  
  #include <string>
  
  namespace atp {
  
  class Base64 {
  public:
      Base64() {}
  
      ~Base64() {}
  
  public:
      static bool base64Encode(const std::string& src, std::string* dst);
  
      static bool base64Decode(const std::string& src, std::string* dst);
  
  private:
      static inline char base2Char(unsigned char n);
  
      static inline unsigned char char2Base(char c);
  
      inline static int base64EncodeLen(int n);
  
      inline static int base64DecodeLen(int n);
  };
  
  } /* end namespace atp */
  
  #endif /* __ATP_BASE64_H__ */
  