initial commit

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

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

@@ -0,0 +1,93 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/mstream.h
+// Purpose:     Memory stream classes
+// Author:      Guilhem Lavaux
+// Created:     11/07/98
+// Copyright:   (c) Guilhem Lavaux
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_WXMMSTREAM_H__
+#define _WX_WXMMSTREAM_H__
+
+#include "wx/defs.h"
+
+#if wxUSE_STREAMS
+
+#include "wx/stream.h"
+
+class WXDLLIMPEXP_FWD_BASE wxMemoryOutputStream;
+
+class WXDLLIMPEXP_BASE wxMemoryInputStream : public wxInputStream
+{
+public:
+    wxMemoryInputStream(const void *data, size_t length);
+    wxMemoryInputStream(const wxMemoryOutputStream& stream);
+    wxMemoryInputStream(wxInputStream& stream,
+                        wxFileOffset lenFile = wxInvalidOffset)
+    {
+        InitFromStream(stream, lenFile);
+    }
+    wxMemoryInputStream(wxMemoryInputStream& stream)
+        : wxInputStream()
+    {
+        InitFromStream(stream, wxInvalidOffset);
+    }
+
+    virtual ~wxMemoryInputStream();
+    virtual wxFileOffset GetLength() const override { return m_length; }
+    virtual bool IsSeekable() const override { return true; }
+
+    virtual char Peek() override;
+    virtual bool CanRead() const override;
+
+    wxStreamBuffer *GetInputStreamBuffer() const { return m_i_streambuf; }
+
+protected:
+    wxStreamBuffer *m_i_streambuf;
+
+    size_t OnSysRead(void *buffer, size_t nbytes) override;
+    wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) override;
+    wxFileOffset OnSysTell() const override;
+
+private:
+    // common part of ctors taking wxInputStream
+    void InitFromStream(wxInputStream& stream, wxFileOffset lenFile);
+
+    size_t m_length;
+
+    // copy ctor is implemented above: it copies the other stream in this one
+    wxDECLARE_ABSTRACT_CLASS(wxMemoryInputStream);
+    wxDECLARE_NO_ASSIGN_CLASS(wxMemoryInputStream);
+};
+
+class WXDLLIMPEXP_BASE wxMemoryOutputStream : public wxOutputStream
+{
+public:
+    // if data is not null it must be allocated with malloc()
+    wxMemoryOutputStream(void *data = nullptr, size_t length = 0);
+    virtual ~wxMemoryOutputStream();
+    virtual wxFileOffset GetLength() const override { return m_o_streambuf->GetLastAccess(); }
+    virtual bool IsSeekable() const override { return true; }
+
+    size_t CopyTo(void *buffer, size_t len) const;
+
+    wxStreamBuffer *GetOutputStreamBuffer() const { return m_o_streambuf; }
+
+protected:
+    wxStreamBuffer *m_o_streambuf;
+
+protected:
+    size_t OnSysWrite(const void *buffer, size_t nbytes) override;
+    wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) override;
+    wxFileOffset OnSysTell() const override;
+
+    wxDECLARE_DYNAMIC_CLASS(wxMemoryOutputStream);
+    wxDECLARE_NO_COPY_CLASS(wxMemoryOutputStream);
+};
+
+#endif
+  // wxUSE_STREAMS
+
+#endif
+  // _WX_WXMMSTREAM_H__