8b4ae731d3
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76220 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/mstream.h
|
|
// Purpose: Memory stream classes
|
|
// Author: Guilhem Lavaux
|
|
// Modified by:
|
|
// 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 wxOVERRIDE { return m_length; }
|
|
virtual bool IsSeekable() const wxOVERRIDE { return true; }
|
|
|
|
virtual char Peek() wxOVERRIDE;
|
|
virtual bool CanRead() const wxOVERRIDE;
|
|
|
|
wxStreamBuffer *GetInputStreamBuffer() const { return m_i_streambuf; }
|
|
|
|
protected:
|
|
wxStreamBuffer *m_i_streambuf;
|
|
|
|
size_t OnSysRead(void *buffer, size_t nbytes) wxOVERRIDE;
|
|
wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE;
|
|
wxFileOffset OnSysTell() const wxOVERRIDE;
|
|
|
|
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
|
|
DECLARE_ABSTRACT_CLASS(wxMemoryInputStream)
|
|
wxDECLARE_NO_ASSIGN_CLASS(wxMemoryInputStream);
|
|
};
|
|
|
|
class WXDLLIMPEXP_BASE wxMemoryOutputStream : public wxOutputStream
|
|
{
|
|
public:
|
|
// if data is !NULL it must be allocated with malloc()
|
|
wxMemoryOutputStream(void *data = NULL, size_t length = 0);
|
|
virtual ~wxMemoryOutputStream();
|
|
virtual wxFileOffset GetLength() const wxOVERRIDE { return m_o_streambuf->GetLastAccess(); }
|
|
virtual bool IsSeekable() const wxOVERRIDE { 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) wxOVERRIDE;
|
|
wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE;
|
|
wxFileOffset OnSysTell() const wxOVERRIDE;
|
|
|
|
DECLARE_DYNAMIC_CLASS(wxMemoryOutputStream)
|
|
wxDECLARE_NO_COPY_CLASS(wxMemoryOutputStream);
|
|
};
|
|
|
|
#endif
|
|
// wxUSE_STREAMS
|
|
|
|
#endif
|
|
// _WX_WXMMSTREAM_H__
|