wxWidgets/include/wx/mstream.h
2003-01-02 23:38:11 +00:00

79 lines
2.0 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/mstream.h
// Purpose: Memory stream classes
// Author: Guilhem Lavaux
// Modified by:
// Created: 11/07/98
// RCS-ID: $Id$
// Copyright: (c) Guilhem Lavaux
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_WXMMSTREAM_H__
#define _WX_WXMMSTREAM_H__
#include "wx/stream.h"
#if wxUSE_STREAMS
class WXDLLEXPORT wxMemoryInputStream : public wxInputStream
{
public:
wxMemoryInputStream(const void *data, size_t length);
virtual ~wxMemoryInputStream();
virtual size_t GetSize() const { return m_length; }
virtual bool Eof() const;
char Peek();
wxStreamBuffer *GetInputStreamBuffer() const { return m_i_streambuf; }
// deprecated, compatibility only
wxStreamBuffer *InputStreamBuffer() const { return m_i_streambuf; }
protected:
wxStreamBuffer *m_i_streambuf;
size_t OnSysRead(void *buffer, size_t nbytes);
off_t OnSysSeek(off_t pos, wxSeekMode mode);
off_t OnSysTell() const;
private:
size_t m_length;
DECLARE_NO_COPY_CLASS(wxMemoryInputStream)
};
class WXDLLEXPORT 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 size_t GetSize() const { return m_o_streambuf->GetLastAccess(); }
size_t CopyTo(void *buffer, size_t len) const;
wxStreamBuffer *GetOutputStreamBuffer() const { return m_o_streambuf; }
// deprecated, compatibility only
wxStreamBuffer *OutputStreamBuffer() const { return m_o_streambuf; }
protected:
wxStreamBuffer *m_o_streambuf;
protected:
size_t OnSysWrite(const void *buffer, size_t nbytes);
off_t OnSysSeek(off_t pos, wxSeekMode mode);
off_t OnSysTell() const;
DECLARE_NO_COPY_CLASS(wxMemoryOutputStream)
};
#endif
// wxUSE_STREAMS
#endif
// _WX_WXMMSTREAM_H__