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/defs.h"
  24
  25 #if wxUSE_FILESYSTEM
  26
  27 #include "wx/filesys.h"
  28
  29 #if wxUSE_GUI
  30     class WXDLLIMPEXP_CORE wxBitmap;
  31     class WXDLLIMPEXP_CORE wxImage;
  32 #endif // wxUSE_GUI
  33
  34 // ----------------------------------------------------------------------------
  35 // wxMemoryFSHandlerBase
  36 // ----------------------------------------------------------------------------
  37
  38 class WXDLLIMPEXP_BASE wxMemoryFSHandlerBase : public wxFileSystemHandler
  39 {
  40 public:
  41     wxMemoryFSHandlerBase();
  42     ~wxMemoryFSHandlerBase();
  43
  44     // Add file to list of files stored in memory. Stored data (bitmap, text or
  45     // raw data) will be copied into private memory stream and available under
  46     // name "memory:" + filename
  47     static void AddFile(const wxString& filename, const wxString& textdata);
  48     static void AddFile(const wxString& filename, const void *binarydata, size_t size);
  49
  50     // Remove file from memory FS and free occupied memory
  51     static void RemoveFile(const wxString& filename);
  52
  53     virtual bool CanOpen(const wxString& location);
  54     virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
  55     virtual wxString FindFirst(const wxString& spec, int flags = 0);
  56     virtual wxString FindNext();
  57
  58 protected:
  59     static bool CheckHash(const wxString& filename);
  60     static wxHashTable *m_Hash;
  61 };
  62
  63 // ----------------------------------------------------------------------------
  64 // wxMemoryFSHandler
  65 // ----------------------------------------------------------------------------
  66
  67 #if wxUSE_GUI
  68
  69 // add GUI-only operations to the base class
  70 class WXDLLIMPEXP_CORE wxMemoryFSHandler : public wxMemoryFSHandlerBase
  71 {
  72 public:
  73     // bring the base class versions into the scope, otherwise they would be
  74     // inaccessible in wxMemoryFSHandler
  75     // (unfortunately "using" can't be used as gcc 2.95 doesn't have it...)
  76     static void AddFile(const wxString& filename, const wxString& textdata)
  77     {
  78         wxMemoryFSHandlerBase::AddFile(filename, textdata);
  79     }
  80
  81     static void AddFile(const wxString& filename,
  82                         const void *binarydata,
  83                         size_t size)
  84     {
  85         wxMemoryFSHandlerBase::AddFile(filename, binarydata, size);
  86     }
  87
  88 #if wxUSE_IMAGE
  89     static void AddFile(const wxString& filename,
  90                         const wxImage& image,
  91                         long type);
  92
  93     static void AddFile(const wxString& filename,
  94                         const wxBitmap& bitmap,
  95                         long type);
  96 #endif // wxUSE_IMAGE
  97
  98 };
  99
 100 #else // !wxUSE_GUI
 101
 102 // just the same thing as the base class in wxBase
 103 class WXDLLIMPEXP_BASE wxMemoryFSHandler : public wxMemoryFSHandlerBase
 104 {
 105 };
 106
 107 #endif // wxUSE_GUI/!wxUSE_GUI
 108
 109 #endif // wxUSE_FILESYSTEM
 110
 111 #endif // _WX_FS_MEM_H_
 112