// 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
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& OUT collect_remains)=0;
virtual bool update_and_stop(std::string& OUT 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& OUT collect_remains)
{
}
i_target_handler* m_powner_filter;
};
}
}
