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/**
* @file bufferstream.h
* @brief Public-facing declaration for the BufferStream adapter class
*
* $LicenseInfo:firstyear=2012&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2012, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef _LLCORE_BUFFER_STREAM_H_
#define _LLCORE_BUFFER_STREAM_H_
#include <sstream>
#include <cstdlib>
#include "bufferarray.h"
namespace LLCore
{
class BufferArrayStreamBuf : public std::streambuf
{
public:
BufferArrayStreamBuf(BufferArray * array);
virtual ~BufferArrayStreamBuf();
private:
BufferArrayStreamBuf(const BufferArrayStreamBuf &); // Not defined
void operator=(const BufferArrayStreamBuf &); // Not defined
public:
// Input interfaces from std::streambuf
int_type underflow();
int_type uflow();
int_type pbackfail(int_type ch);
std::streamsize showmanyc();
// Output interfaces from std::streambuf
int_type overflow(int c);
std::streamsize xsputn(const char * src, std::streamsize count);
// Common/misc interfaces from std::streambuf
std::streampos seekoff(std::streamoff off, std::ios_base::seekdir way, std::ios_base::openmode which);
protected:
BufferArray * mBufferArray; // Ref counted
size_t mReadCurPos;
int mReadCurBlock;
const char * mReadBegin;
const char * mReadCur;
const char * mReadEnd;
size_t mWriteCurPos;
}; // end class BufferArrayStreamBuf
class BufferArrayStream : public std::iostream
{
public:
BufferArrayStream(BufferArray * ba);
~BufferArrayStream();
protected:
BufferArrayStream(const BufferArrayStream &);
void operator=(const BufferArrayStream &);
protected:
BufferArrayStreamBuf mStreamBuf;
}; // end class BufferArrayStream
} // end namespace LLCore
#endif // _LLCORE_BUFFER_STREAM_H_
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