include/wx/fs_mem.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        fs_mem.h
   3 // Purpose:     in-memory file system
   4 // Author:      Vaclav Slavik
   5 // Copyright:   (c) 2000 Vaclav Slavik
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifndef _WX_FS_MEM_H_
  10 #define _WX_FS_MEM_H_
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) && !defined(__EMX__)
  13 // Some older compilers (such as EMX) cannot handle
  14 // #pragma interface/implementation correctly, iff
  15 // #pragma implementation is used in _two_ translation
  16 // units (as created by e.g. event.cpp compiled for
  17 // libwx_base and event.cpp compiled for libwx_gui_core).
  18 // So we must not use those pragmas for those compilers in
  19 // such files.
  20 #pragma interface "fs_mem.h"
  21 #endif
  22
  23 #include "wx/wxprec.h"
  24
  25 #ifdef __BORLANDC__
  26 #pragma hdrstop
  27 #endif
  28
  29 #if wxUSE_FILESYSTEM
  30
  31 #include "wx/filesys.h"
  32
  33 #if wxUSE_GUI
  34     class WXDLLIMPEXP_CORE wxBitmap;
  35     class WXDLLIMPEXP_CORE wxImage;
  36 #endif // wxUSE_GUI
  37
  38 // ----------------------------------------------------------------------------
  39 // wxMemoryFSHandlerBase
  40 // ----------------------------------------------------------------------------
  41
  42 class WXDLLIMPEXP_BASE wxMemoryFSHandlerBase : public wxFileSystemHandler
  43 {
  44 public:
  45     wxMemoryFSHandlerBase();
  46     ~wxMemoryFSHandlerBase();
  47
  48     // Add file to list of files stored in memory. Stored data (bitmap, text or
  49     // raw data) will be copied into private memory stream and available under
  50     // name "memory:" + filename
  51     static void AddFile(const wxString& filename, const wxString& textdata);
  52     static void AddFile(const wxString& filename, const void *binarydata, size_t size);
  53
  54     // Remove file from memory FS and free occupied memory
  55     static void RemoveFile(const wxString& filename);
  56
  57     virtual bool CanOpen(const wxString& location);
  58     virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
  59     virtual wxString FindFirst(const wxString& spec, int flags = 0);
  60     virtual wxString FindNext();
  61
  62 protected:
  63     static bool CheckHash(const wxString& filename);
  64     static wxHashTable *m_Hash;
  65 };
  66
  67 // ----------------------------------------------------------------------------
  68 // wxMemoryFSHandler
  69 // ----------------------------------------------------------------------------
  70
  71 #if wxUSE_GUI
  72
  73 // add GUI-only operations to the base class
  74 class WXDLLIMPEXP_CORE wxMemoryFSHandler : public wxMemoryFSHandlerBase
  75 {
  76 public:
  77     // bring the base class versions into the scope, otherwise they would be
  78     // inaccessible in wxMemoryFSHandler
  79     // (unfortunately "using" can't be used as gcc 2.95 doesn't have it...)
  80     static void AddFile(const wxString& filename, const wxString& textdata)
  81     {
  82         wxMemoryFSHandlerBase::AddFile(filename, textdata);
  83     }
  84
  85     static void AddFile(const wxString& filename,
  86                         const void *binarydata,
  87                         size_t size)
  88     {
  89         wxMemoryFSHandlerBase::AddFile(filename, binarydata, size);
  90     }
  91
  92 #if wxUSE_IMAGE
  93     static void AddFile(const wxString& filename,
  94                         const wxImage& image,
  95                         long type);
  96
  97     static void AddFile(const wxString& filename,
  98                         const wxBitmap& bitmap,
  99                         long type);
 100 #endif // wxUSE_IMAGE
 101
 102 };
 103
 104 #else // !wxUSE_GUI
 105
 106 // just the same thing as the base class in wxBase
 107 class WXDLLIMPEXP_BASE wxMemoryFSHandler : public wxMemoryFSHandlerBase
 108 {
 109 };
 110
 111 #endif // wxUSE_GUI/!wxUSE_GUI
 112
 113 #endif // wxUSE_FILESYSTEM
 114
 115 #endif // _WX_FS_MEM_H_
 116