include/wx/zipstrm.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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma interface "zipstrm.h"
  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 WXDLLIMPEXP_BASE wxZipInputStream : public wxInputStream
  30 {
  31 public:
  32     wxZipInputStream(const wxString& archive, const wxString& file);
  33             // archive is name of .zip archive, file is name of file to be extracted.
  34             // Remember that archive must be local file accesible via fopen, fread functions!
  35     ~wxZipInputStream();
  36
  37     virtual size_t GetSize() const {return m_Size;}
  38     virtual bool Eof() const;
  39
  40 protected:
  41     virtual size_t OnSysRead(void *buffer, size_t bufsize);
  42     virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
  43     virtual off_t OnSysTell() const {return m_Pos;}
  44
  45 private:
  46     size_t m_Size;
  47     off_t m_Pos;
  48
  49     // this void* is handle of archive . I'm sorry it is void and not proper
  50     // type but I don't want to make unzip.h header public.
  51     void *m_Archive;
  52
  53     DECLARE_NO_COPY_CLASS(wxZipInputStream)
  54 };
  55
  56
  57 #endif
  58    // wxUSE_STREAMS && wxUSE_ZIPSTREAM && wxUSE_ZLIB
  59
  60 #endif
  61    // __ZIPSTREAM_H__