windows-server-2003/shell/ext/mlang/utf8obj.h

#include "convbase.h"

#define HIGHT_SURROGATE_START   0xD800
#define HIGHT_SURROGATE_END     0xDBFF
#define LOW_SURROGATE_START     0xDC00
#define LOW_SURROGATE_END       0xDFFF

class CInccUTF8In : public CINetCodeConverter
{
private:
    BOOL (CInccUTF8In::*m_pfnConv)(UCHAR tc);
    BOOL (CInccUTF8In::*m_pfnCleanUp)();

    WORD    m_tcUnicode ;
    DWORD   m_tcSurrogateUnicode ;
    int     m_nByteFollow;
    int     m_nBytesUsed;
    BOOL    m_fSurrogatesPairs;
public:
    CInccUTF8In(UINT uCodePage, int nCodeSet);
    ~CInccUTF8In() {}
    virtual HRESULT ConvertChar(UCHAR tc, int cchSrc=-1);
    virtual BOOL CleanUp();
    virtual int GetUnconvertBytes();
    virtual DWORD GetConvertMode();
    virtual void SetConvertMode(DWORD mode);

private:
    void Reset(); 
    BOOL ConvMain(UCHAR tc);
    BOOL CleanUpMain();

};

class CInccUTF8Out : public CINetCodeConverter
{
private:
    BOOL    m_fDoubleByte;
    BYTE    m_tcLeadByte;
    WCHAR   m_wchSurrogateHigh;

public:
    CInccUTF8Out(UINT uCodePage, int nCodeSet);
    ~CInccUTF8Out() {}
    virtual HRESULT ConvertChar(UCHAR tc, int cchSrc=-1);
    virtual BOOL CleanUp();
    virtual int GetUnconvertBytes();
    virtual DWORD GetConvertMode();
    virtual void SetConvertMode(DWORD mode);
private:
    void Reset(); 
};