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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_