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