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