mirror of https://github.com/aria2/aria2
92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2011 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef D_SOCKET_RECV_BUFFER_H
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#define D_SOCKET_RECV_BUFFER_H
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#include "common.h"
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#include "SharedHandle.h"
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namespace aria2 {
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class SocketCore;
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class SocketRecvBuffer {
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public:
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SocketRecvBuffer
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(const SharedHandle<SocketCore>& socket,
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size_t capacity = 16*1024);
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~SocketRecvBuffer();
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// Reads data from socket as much as capacity allows. Returns the
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// number of bytes read.
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ssize_t recv();
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// Shifts buffer by offset bytes. offset must satisfy offset <=
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// getBufferLength().
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void shiftBuffer(size_t offset);
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// Truncates the contents of buffer to 0.
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void clearBuffer()
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{
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bufLen_ = 0;
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}
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const SharedHandle<SocketCore>& getSocket() const
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{
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return socket_;
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}
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const unsigned char* getBuffer() const
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{
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return buf_;
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}
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size_t getBufferLength() const
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{
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return bufLen_;
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}
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bool bufferEmpty() const
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{
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return bufLen_ == 0;
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}
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private:
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SharedHandle<SocketCore> socket_;
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size_t capacity_;
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unsigned char* buf_;
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size_t bufLen_;
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};
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} // namespace aria2
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#endif // D_SOCKET_RECV_BUFFER_H
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