fbreader/src/formats/pdb/PdbStream.h

   1 /*
   2  * Copyright (C) 2004-2008 Geometer Plus <contact@geometerplus.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301, USA.
  18  */
  19
  20 #ifndef __PDBSTREAM_H__
  21 #define __PDBSTREAM_H__
  22
  23 #include <ZLInputStream.h>
  24
  25 #include "PdbReader.h"
  26
  27 class ZLFile;
  28
  29 class PdbStream : public ZLInputStream {
  30
  31 public:
  32         PdbStream(ZLFile &file);
  33         virtual ~PdbStream();
  34         size_t read(char *buffer, size_t maxSize);
  35         virtual bool open();
  36         virtual void close();
  37
  38         void seek(int offset, bool absoluteOffset);
  39         size_t offset() const;
  40         size_t sizeOfOpened();
  41
  42 protected:
  43         virtual bool fillBuffer() = 0;
  44
  45 protected:
  46         shared_ptr<ZLInputStream> myBase;
  47         size_t myOffset;
  48         PdbHeader myHeader;
  49         char *myBuffer;
  50
  51         unsigned short myBufferLength;
  52         unsigned short myBufferOffset;
  53 };
  54
  55 #endif /* __PDBSTREAM_H__ */