MASA-Core: BufferedCellsReader.hpp Source File

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00001 /*******************************************************************************
00002  *
00003  * Copyright (c) 2010-2015   Edans Sandes
00004  *
00005  * This file is part of MASA-Core.
00006  * 
00007  * MASA-Core is free software: you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation, either version 3 of the License, or
00010  * (at your option) any later version.
00011  * 
00012  * MASA-Core is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with MASA-Core.  If not, see <http://www.gnu.org/licenses/>.
00019  *
00020  ******************************************************************************/
00021 
00022 #ifndef BUFFEREDCELLSREADER_HPP_
00023 #define BUFFEREDCELLSREADER_HPP_
00024 
00025 #include "CellsReader.hpp"
00026 #include "BufferedStream.hpp"
00027 #include "FileCellsReader.hpp"
00028 #include "FileCellsWriter.hpp"
00029 
00030 class BufferedCellsReader: public SeekableCellsReader, public BufferedStream {
00031 public:
00032         BufferedCellsReader(CellsReader* reader, int bufferLimit);
00033         virtual ~BufferedCellsReader();
00034         virtual void close();
00035 
00036         virtual int getType();
00037         virtual int read(cell_t* buf, int len);
00038         virtual void seek(int position);
00039         virtual int getOffset();
00040 private:
00041         CellsReader* reader;
00042         int offset;
00043 
00044     void bufferLoop();
00045 };
00046 
00047 #endif /* BUFFEREDCELLSREADER_HPP_ */