text: // Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
  // All rights reserved.
  // 
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  // * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  // * Redistributions in binary form must reproduce the above copyright
  // notice, this list of conditions and the following disclaimer in the
  // documentation and/or other materials provided with the distribution.
  // * Neither the name of the Andrey N. Sabelnikov nor the
  // names of its contributors may be used to endorse or promote products
  // derived from this software without specific prior written permission.
  // 
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER  BE LIABLE FOR ANY
  // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  // ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  // 
  
  #pragma once 
  
  #undef SARONITE_DEFAULT_LOG_CATEGORY
  #define SARONITE_DEFAULT_LOG_CATEGORY "net.http"
  
  namespace epee
  {
    namespace net_utils
    {
      struct i_sub_handler
      {
        virtual ~i_sub_handler(){}
  
        virtual bool update_in( std::string& piece_of_transfer)=0;
        virtual void stop(std::string& collect_remains)=0;
        virtual bool update_and_stop(std::string& collect_remains, bool& is_changed)
        {
          is_changed = true;
          bool res = this->update_in(collect_remains);
          if(res)
            this->stop(collect_remains);
          return res;
        }
      };
  
  
      struct i_target_handler
      {
        virtual ~i_target_handler(){}
        virtual bool handle_target_data( std::string& piece_of_transfer)=0;
      };
  
  
      class do_nothing_sub_handler: public i_sub_handler
      {
      public: 
        do_nothing_sub_handler(i_target_handler* powner_filter):m_powner_filter(powner_filter)
        {}
        virtual bool update_in( std::string& piece_of_transfer)
        {
          return m_powner_filter->handle_target_data(piece_of_transfer);
        }
        virtual void stop(std::string& collect_remains)
        {
  
        }
        i_target_handler* m_powner_filter;
      };
    }
  }
  