include/wx/zipstream.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        zipstream.h
   3 // Purpose:     wxZipInputStream for reading files from ZIP archive
   4 // Author:      Vaclav Slavik
   5 // Copyright:   (c) 1999 Vaclav Slavik
   6 // Licence:     wxWindows Licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifndef __ZIPSTREAM_H__
  10 #define __ZIPSTREAM_H__
  11
  12 #ifdef __GNUG__
  13 #pragma interface
  14 #endif
  15
  16 #include "wx/defs.h"
  17
  18 #if wxUSE_STREAMS && wxUSE_ZIPSTREAM && wxUSE_ZLIB
  19
  20 #include "wx/stream.h"
  21
  22 //--------------------------------------------------------------------------------
  23 // wxZipInputStream
  24 //                  This class is input stream from ZIP archive. The archive
  25 //                  must be local file (accessible via FILE*)
  26 //--------------------------------------------------------------------------------
  27
  28
  29 class WXDLLEXPORT wxZipInputStream : public wxInputStream
  30 {
  31     private:
  32         size_t m_Size;
  33         off_t m_Pos;
  34         void *m_Archive;
  35                 // this void* is handle of archive .
  36                 // I'm sorry it is void and not proper type but I don't want
  37                 // to make unzip.h header public.
  38
  39     public:
  40         wxZipInputStream(const wxString& archive, const wxString& file);
  41                 // archive is name of .zip archive, file is name of file to be extracted.
  42                 // Remember that archive must be local file accesible via fopen, fread functions!
  43         ~wxZipInputStream();
  44
  45     protected:
  46         virtual size_t StreamSize() const {return m_Size;}
  47         virtual size_t OnSysRead(void *buffer, size_t bufsize);
  48         virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
  49         virtual off_t OnSysTell() const {return m_Pos;}
  50 };
  51
  52
  53 #endif
  54    // wxUSE_STREAMS && wxUSE_ZIPSTREAM && wxUSE_ZLIB
  55
  56 #endif
  57    // __ZIPSTREAM_H__
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