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chminputstream.h

00001 /*
00002 
00003   Copyright (C) 2003  Razvan Cojocaru <razvanco@gmx.net>
00004  
00005   This program is free software; you can redistribute it and/or modify
00006   it under the terms of the GNU General Public License as published by
00007   the Free Software Foundation; either version 2 of the License, or
00008   (at your option) any later version.
00009   
00010   This program is distributed in the hope that it will be useful,
00011   but WITHOUT ANY WARRANTY; without even the implied warranty of
00012   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013   GNU General Public License for more details.
00014   
00015   You should have received a copy of the GNU General Public License
00016   along with this program; if not, write to the Free Software
00017   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 
00019 */
00020 
00021 
00022 #ifndef __CHMINPUTSTREAM_H_
00023 #define __CHMINPUTSTREAM_H_
00024 
00025 #include <wx/stream.h>
00026 #include <chmfile.h>
00027 
00028 
00035 
00036 class CHMInputStream : public wxInputStream
00037 {
00038 public:
00046         CHMInputStream(const wxString& archive, const wxString& file);
00047 
00049         virtual size_t GetSize() const;
00050 
00052         virtual bool Eof() const;
00053 
00061         static CHMFile* GetCache() { return _archiveCache; }
00062 
00069         static void Cleanup();
00070         
00071 protected:
00078         virtual size_t OnSysRead(void *buffer, size_t bufsize);
00079 
00086         virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
00087 
00092         virtual off_t OnSysTell() const { return _currPos; }
00093 
00094 private:
00096         bool Init(const wxString& archive);
00097 
00098 
00099 private:
00101         static CHMFile *_archiveCache;
00102         off_t _currPos;
00103         chmUnitInfo _ui;
00104         static wxString _path;
00105 };
00106 
00107 #endif // __CHMINPUTSTREAM_H_
00108 

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