initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/fs_mem.h

@@ -0,0 +1,145 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/fs_mem.h
+// Purpose:     in-memory file system
+// Author:      Vaclav Slavik
+// Copyright:   (c) 2000 Vaclav Slavik
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_FS_MEM_H_
+#define _WX_FS_MEM_H_
+
+#include "wx/defs.h"
+
+#if wxUSE_FILESYSTEM
+
+#include "wx/filesys.h"
+
+#include <memory>
+#include <unordered_map>
+
+class wxMemoryFSFile;
+
+#if wxUSE_GUI
+    #include "wx/bitmap.h"
+#endif // wxUSE_GUI
+
+// ----------------------------------------------------------------------------
+// wxMemoryFSHandlerBase
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxMemoryFSHandlerBase : public wxFileSystemHandler
+{
+public:
+    wxMemoryFSHandlerBase();
+    virtual ~wxMemoryFSHandlerBase();
+
+    // Add file to list of files stored in memory. Stored data (bitmap, text or
+    // raw data) will be copied into private memory stream and available under
+    // name "memory:" + filename
+    static void AddFile(const wxString& filename, const wxString& textdata);
+    static void AddFile(const wxString& filename, const void *binarydata, size_t size);
+    static void AddFileWithMimeType(const wxString& filename,
+                                    const wxString& textdata,
+                                    const wxString& mimetype);
+    static void AddFileWithMimeType(const wxString& filename,
+                                    const void *binarydata, size_t size,
+                                    const wxString& mimetype);
+
+    // Remove file from memory FS and free occupied memory
+    static void RemoveFile(const wxString& filename);
+
+    virtual bool CanOpen(const wxString& location) override;
+    virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location) override;
+    virtual wxString FindFirst(const wxString& spec, int flags = 0) override;
+    virtual wxString FindNext() override;
+
+protected:
+    // check that the given file is not already present in m_Hash; logs an
+    // error and returns false if it does exist
+    static bool CheckDoesntExist(const wxString& filename);
+
+    // add the given object to m_Hash, taking ownership of the pointer
+    static void DoAddFile(const wxString& filename, wxMemoryFSFile* file);
+
+private:
+    // the hash map indexed by the names of the files stored in the memory FS
+    using wxMemoryFSHash =
+        std::unordered_map<wxString, std::unique_ptr<wxMemoryFSFile>>;
+    static wxMemoryFSHash m_Hash;
+
+    // the file name currently being searched for, i.e. the argument of the
+    // last FindFirst() call or empty string if FindFirst() hasn't been called
+    // yet
+    wxString m_findArgument;
+
+    // iterator into m_Hash used by FindFirst/Next(), possibly m_Hash.end()
+    wxMemoryFSHash::const_iterator m_findIter;
+};
+
+// ----------------------------------------------------------------------------
+// wxMemoryFSHandler
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI
+
+// add GUI-only operations to the base class
+class WXDLLIMPEXP_CORE wxMemoryFSHandler : public wxMemoryFSHandlerBase
+{
+public:
+    // bring the base class versions into the scope, otherwise they would be
+    // inaccessible in wxMemoryFSHandler
+    // (unfortunately "using" can't be used as gcc 2.95 doesn't have it...)
+    static void AddFile(const wxString& filename, const wxString& textdata)
+    {
+        wxMemoryFSHandlerBase::AddFile(filename, textdata);
+    }
+
+    static void AddFile(const wxString& filename,
+                        const void *binarydata,
+                        size_t size)
+    {
+        wxMemoryFSHandlerBase::AddFile(filename, binarydata, size);
+    }
+    static void AddFileWithMimeType(const wxString& filename,
+                                    const wxString& textdata,
+                                    const wxString& mimetype)
+    {
+        wxMemoryFSHandlerBase::AddFileWithMimeType(filename,
+                                                   textdata,
+                                                   mimetype);
+    }
+    static void AddFileWithMimeType(const wxString& filename,
+                                    const void *binarydata, size_t size,
+                                    const wxString& mimetype)
+    {
+        wxMemoryFSHandlerBase::AddFileWithMimeType(filename,
+                                                   binarydata, size,
+                                                   mimetype);
+    }
+
+#if wxUSE_IMAGE
+    static void AddFile(const wxString& filename,
+                        const wxImage& image,
+                        wxBitmapType type);
+
+    static void AddFile(const wxString& filename,
+                        const wxBitmap& bitmap,
+                        wxBitmapType type);
+#endif // wxUSE_IMAGE
+
+};
+
+#else // !wxUSE_GUI
+
+// just the same thing as the base class in wxBase
+class WXDLLIMPEXP_BASE wxMemoryFSHandler : public wxMemoryFSHandlerBase
+{
+};
+
+#endif // wxUSE_GUI/!wxUSE_GUI
+
+#endif // wxUSE_FILESYSTEM
+
+#endif // _WX_FS_MEM_H_
+