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62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_I_DECODER_HPP_INCLUDED__
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#define __ZMQ_I_DECODER_HPP_INCLUDED__
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#include "macros.hpp"
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#include "stdint.hpp"
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namespace zmq
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{
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class msg_t;
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// Interface to be implemented by message decoder.
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class i_decoder
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{
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public:
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virtual ~i_decoder () ZMQ_DEFAULT;
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virtual void get_buffer (unsigned char **data_, size_t *size_) = 0;
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virtual void resize_buffer (size_t) = 0;
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// Decodes data pointed to by data_.
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// When a message is decoded, 1 is returned.
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// When the decoder needs more data, 0 is returned.
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// On error, -1 is returned and errno is set accordingly.
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virtual int
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decode (const unsigned char *data_, size_t size_, size_t &processed_) = 0;
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virtual msg_t *msg () = 0;
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};
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}
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#endif
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