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 #include "wx/defs.h"
  13
  14 #if wxUSE_FILESYSTEM
  15
  16 #include "wx/filesys.h"
  17
  18 #if wxUSE_GUI
  19     class WXDLLIMPEXP_FWD_CORE wxBitmap;
  20     class WXDLLIMPEXP_FWD_CORE wxImage;
  21 #endif // wxUSE_GUI
  22
  23 // ----------------------------------------------------------------------------
  24 // wxMemoryFSHandlerBase
  25 // ----------------------------------------------------------------------------
  26
  27 class WXDLLIMPEXP_BASE wxMemoryFSHandlerBase : public wxFileSystemHandler
  28 {
  29 public:
  30     wxMemoryFSHandlerBase();
  31     virtual ~wxMemoryFSHandlerBase();
  32
  33     // Add file to list of files stored in memory. Stored data (bitmap, text or
  34     // raw data) will be copied into private memory stream and available under
  35     // name "memory:" + filename
  36     static void AddFile(const wxString& filename, const wxString& textdata);
  37     static void AddFile(const wxString& filename, const void *binarydata, size_t size);
  38     static void AddFileWithMimeType(const wxString& filename,
  39                                     const wxString& textdata,
  40                                     const wxString& mimetype);
  41     static void AddFileWithMimeType(const wxString& filename,
  42                                     const void *binarydata, size_t size,
  43                                     const wxString& mimetype);
  44
  45     // Remove file from memory FS and free occupied memory
  46     static void RemoveFile(const wxString& filename);
  47
  48     virtual bool CanOpen(const wxString& location);
  49     virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
  50     virtual wxString FindFirst(const wxString& spec, int flags = 0);
  51     virtual wxString FindNext();
  52
  53 protected:
  54     static bool CheckHash(const wxString& filename);
  55     static wxHashTable *m_Hash;
  56 };
  57
  58 // ----------------------------------------------------------------------------
  59 // wxMemoryFSHandler
  60 // ----------------------------------------------------------------------------
  61
  62 #if wxUSE_GUI
  63
  64 // add GUI-only operations to the base class
  65 class WXDLLIMPEXP_CORE wxMemoryFSHandler : public wxMemoryFSHandlerBase
  66 {
  67 public:
  68     // bring the base class versions into the scope, otherwise they would be
  69     // inaccessible in wxMemoryFSHandler
  70     // (unfortunately "using" can't be used as gcc 2.95 doesn't have it...)
  71     static void AddFile(const wxString& filename, const wxString& textdata)
  72     {
  73         wxMemoryFSHandlerBase::AddFile(filename, textdata);
  74     }
  75
  76     static void AddFile(const wxString& filename,
  77                         const void *binarydata,
  78                         size_t size)
  79     {
  80         wxMemoryFSHandlerBase::AddFile(filename, binarydata, size);
  81     }
  82     static void AddFileWithMimeType(const wxString& filename,
  83                                     const wxString& textdata,
  84                                     const wxString& mimetype)
  85     {
  86         wxMemoryFSHandlerBase::AddFileWithMimeType(filename,
  87                                                    textdata,
  88                                                    mimetype);
  89     }
  90     static void AddFileWithMimeType(const wxString& filename,
  91                                     const void *binarydata, size_t size,
  92                                     const wxString& mimetype)
  93     {
  94         wxMemoryFSHandlerBase::AddFileWithMimeType(filename,
  95                                                    binarydata, size,
  96                                                    mimetype);
  97     }
  98
  99 #if wxUSE_IMAGE
 100     static void AddFile(const wxString& filename,
 101                         const wxImage& image,
 102                         wxBitmapType type);
 103
 104     static void AddFile(const wxString& filename,
 105                         const wxBitmap& bitmap,
 106                         wxBitmapType type);
 107 #endif // wxUSE_IMAGE
 108
 109 };
 110
 111 #else // !wxUSE_GUI
 112
 113 // just the same thing as the base class in wxBase
 114 class WXDLLIMPEXP_BASE wxMemoryFSHandler : public wxMemoryFSHandlerBase
 115 {
 116 };
 117
 118 #endif // wxUSE_GUI/!wxUSE_GUI
 119
 120 #endif // wxUSE_FILESYSTEM
 121
 122 #endif // _WX_FS_MEM_H_
 123