mirror of https://github.com/aria2/aria2
117 lines
3.6 KiB
C++
117 lines
3.6 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) 2010 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_BUFFER_H
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#define D_SOCKET_BUFFER_H
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#include "common.h"
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#include <string>
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#include <deque>
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#include "SharedHandle.h"
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namespace aria2 {
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class SocketCore;
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class SocketBuffer {
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private:
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class BufEntry {
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public:
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virtual ~BufEntry() {}
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virtual ssize_t send
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(const SharedHandle<SocketCore>& socket, size_t offset) = 0;
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virtual bool final(size_t offset) const = 0;
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};
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class ByteArrayBufEntry:public BufEntry {
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public:
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ByteArrayBufEntry(unsigned char* bytes, size_t length);
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virtual ~ByteArrayBufEntry();
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virtual ssize_t send
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(const SharedHandle<SocketCore>& socket, size_t offset);
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virtual bool final(size_t offset) const;
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private:
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unsigned char* bytes_;
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size_t length_;
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};
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class StringBufEntry:public BufEntry {
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public:
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StringBufEntry(const std::string& s);
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virtual ssize_t send
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(const SharedHandle<SocketCore>& socket, size_t offset);
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virtual bool final(size_t offset) const;
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private:
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std::string str_;
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};
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SharedHandle<SocketCore> socket_;
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std::deque<SharedHandle<BufEntry> > bufq_;
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// Offset of data in bufq_[0]. SocketBuffer tries to send bufq_[0],
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// but it cannot always send whole data. In this case, offset points
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// to the data to be sent in the next send() call.
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size_t offset_;
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public:
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SocketBuffer(const SharedHandle<SocketCore>& socket);
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~SocketBuffer();
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// Don't allow copying
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SocketBuffer(const SocketBuffer&);
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SocketBuffer& operator=(const SocketBuffer&);
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// Feeds data pointered by bytes with length len into queue. This
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// object gets ownership of bytes, so caller must not delete or
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// later bytes after this call. This function doesn't send data.
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void pushBytes(unsigned char* bytes, size_t len);
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// Feeds data into queue. This function doesn't send data.
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void pushStr(const std::string& data);
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// Sends data in queue. Returns the number of bytes sent.
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ssize_t send();
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// Returns true if queue is empty.
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bool sendBufferIsEmpty() const;
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};
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} // namespace aria2
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#endif // D_SOCKET_BUFFER_H
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