dolphin/Externals/wxWidgets/include/wx/convauto.h

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///////////////////////////////////////////////////////////////////////////////
// Name: wx/convauto.h
// Purpose: wxConvAuto class declaration
// Author: Vadim Zeitlin
// Created: 2006-04-03
// RCS-ID: $Id: convauto.h 45893 2007-05-08 20:05:16Z VZ $
// Copyright: (c) 2006 Vadim Zeitlin
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_CONVAUTO_H_
#define _WX_CONVAUTO_H_
#include "wx/strconv.h"
#if wxUSE_WCHAR_T
// ----------------------------------------------------------------------------
// wxConvAuto: uses BOM to automatically detect input encoding
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxConvAuto : public wxMBConv
{
public:
// default ctor, the real conversion will be created on demand
wxConvAuto() { m_conv = NULL; /* the rest will be initialized later */ }
// copy ctor doesn't initialize anything neither as conversion can only be
// deduced on first use
wxConvAuto(const wxConvAuto& WXUNUSED(other)) : wxMBConv() { m_conv = NULL; }
virtual ~wxConvAuto() { if ( m_conv && m_ownsConv ) delete m_conv; }
// override the base class virtual function(s) to use our m_conv
virtual size_t ToWChar(wchar_t *dst, size_t dstLen,
const char *src, size_t srcLen = wxNO_LEN) const;
virtual size_t FromWChar(char *dst, size_t dstLen,
const wchar_t *src, size_t srcLen = wxNO_LEN) const;
virtual size_t GetMBNulLen() const { return m_conv->GetMBNulLen(); }
virtual wxMBConv *Clone() const { return new wxConvAuto(*this); }
private:
// all currently recognized BOM values
enum BOMType
{
BOM_None,
BOM_UTF32BE,
BOM_UTF32LE,
BOM_UTF16BE,
BOM_UTF16LE,
BOM_UTF8
};
// return the BOM type of this buffer
static BOMType DetectBOM(const char *src, size_t srcLen);
// initialize m_conv with the conversion to use by default (UTF-8)
void InitWithDefault()
{
m_conv = &wxConvUTF8;
m_ownsConv = false;
}
// create the correct conversion object for the given BOM type
void InitFromBOM(BOMType bomType);
// create the correct conversion object for the BOM present in the
// beginning of the buffer; adjust the buffer to skip the BOM if found
void InitFromInput(const char **src, size_t *len);
// adjust src and len to skip over the BOM (identified by m_bomType) at the
// start of the buffer
void SkipBOM(const char **src, size_t *len) const;
// conversion object which we really use, NULL until the first call to
// either ToWChar() or FromWChar()
wxMBConv *m_conv;
// our BOM type
BOMType m_bomType;
// true if we allocated m_conv ourselves, false if we just use an existing
// global conversion
bool m_ownsConv;
// true if we already skipped BOM when converting (and not just calculating
// the size)
bool m_consumedBOM;
DECLARE_NO_ASSIGN_CLASS(wxConvAuto)
};
#else // !wxUSE_WCHAR_T
// it doesn't matter how we define it in this case as it's unused anyhow, but
// do define it to allow the code using wxConvAuto() as default argument (this
// is done in many places) to compile
typedef wxMBConv wxConvAuto;
#endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
#endif // _WX_CONVAUTO_H_