8b4ae731d3
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76220 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/sstream.h
|
|
// Purpose: string-based streams
|
|
// Author: Vadim Zeitlin
|
|
// Modified by:
|
|
// Created: 2004-09-19
|
|
// Copyright: (c) 2004 Vadim Zeitlin <vadim@wxwindows.org>
|
|
// Licence: wxWindows licence
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_SSTREAM_H_
|
|
#define _WX_SSTREAM_H_
|
|
|
|
#include "wx/stream.h"
|
|
|
|
#if wxUSE_STREAMS
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxStringInputStream is a stream reading from the given (fixed size) string
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_BASE wxStringInputStream : public wxInputStream
|
|
{
|
|
public:
|
|
// ctor associates the stream with the given string which makes a copy of
|
|
// it
|
|
wxStringInputStream(const wxString& s);
|
|
|
|
virtual wxFileOffset GetLength() const wxOVERRIDE;
|
|
virtual bool IsSeekable() const wxOVERRIDE { return true; }
|
|
|
|
protected:
|
|
virtual wxFileOffset OnSysSeek(wxFileOffset ofs, wxSeekMode mode) wxOVERRIDE;
|
|
virtual wxFileOffset OnSysTell() const wxOVERRIDE;
|
|
virtual size_t OnSysRead(void *buffer, size_t size) wxOVERRIDE;
|
|
|
|
private:
|
|
// the string that was passed in the ctor
|
|
wxString m_str;
|
|
|
|
// the buffer we're reading from
|
|
wxCharBuffer m_buf;
|
|
|
|
// length of the buffer we're reading from
|
|
size_t m_len;
|
|
|
|
// position in the stream in bytes, *not* in chars
|
|
size_t m_pos;
|
|
|
|
wxDECLARE_NO_COPY_CLASS(wxStringInputStream);
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxStringOutputStream writes data to the given string, expanding it as needed
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_BASE wxStringOutputStream : public wxOutputStream
|
|
{
|
|
public:
|
|
// The stream will write data either to the provided string or to an
|
|
// internal string which can be retrieved using GetString()
|
|
//
|
|
// Note that the conversion object should have the life time greater than
|
|
// this stream.
|
|
wxStringOutputStream(wxString *pString = NULL,
|
|
wxMBConv& conv = wxConvUTF8)
|
|
: m_conv(conv)
|
|
#if wxUSE_UNICODE
|
|
, m_unconv(0)
|
|
#endif // wxUSE_UNICODE
|
|
{
|
|
m_str = pString ? pString : &m_strInternal;
|
|
m_pos = m_str->length() / sizeof(wxChar);
|
|
}
|
|
|
|
// get the string containing current output
|
|
const wxString& GetString() const { return *m_str; }
|
|
|
|
virtual bool IsSeekable() const wxOVERRIDE { return true; }
|
|
|
|
protected:
|
|
virtual wxFileOffset OnSysTell() const wxOVERRIDE;
|
|
virtual size_t OnSysWrite(const void *buffer, size_t size) wxOVERRIDE;
|
|
|
|
private:
|
|
// internal string, not used if caller provided his own string
|
|
wxString m_strInternal;
|
|
|
|
// pointer given by the caller or just pointer to m_strInternal
|
|
wxString *m_str;
|
|
|
|
// position in the stream in bytes, *not* in chars
|
|
size_t m_pos;
|
|
|
|
// converter to use: notice that with the default UTF-8 one the input
|
|
// stream must contain valid UTF-8 data, use wxConvISO8859_1 to work with
|
|
// arbitrary 8 bit data
|
|
wxMBConv& m_conv;
|
|
|
|
#if wxUSE_UNICODE
|
|
// unconverted data from the last call to OnSysWrite()
|
|
wxMemoryBuffer m_unconv;
|
|
#endif // wxUSE_UNICODE
|
|
|
|
wxDECLARE_NO_COPY_CLASS(wxStringOutputStream);
|
|
};
|
|
|
|
#endif // wxUSE_STREAMS
|
|
|
|
#endif // _WX_SSTREAM_H_
|
|
|