60 lines
1.3 KiB
C++
60 lines
1.3 KiB
C++
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#ifndef CONVBASE_H_
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#define CONVBASE_H_
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#define MAXOVERFLOWCHARS 16
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class CINetCodeConverter
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{
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private:
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UINT m_uCodePage;
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int m_nCodeSet;
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BOOL m_fOutput;
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LPSTR m_lpDestStr;
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int m_cchDest;
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int m_cchOutput;
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int m_cchOverflow;
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UCHAR m_OverflowBuffer[MAXOVERFLOWCHARS];
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public:
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CINetCodeConverter();
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CINetCodeConverter(UINT uCodePage, int nCodeSet);
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virtual ~CINetCodeConverter() {}
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int GetCodeSet() {return m_nCodeSet;}
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HRESULT GetStringSizeA(LPCSTR lpSrcStr, int cchSrc, LPINT lpnSize = NULL);
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HRESULT ConvertStringA(LPCSTR lpSrcStr, int cchSrc, LPSTR lpDestStr, int cchDest, LPINT lpnSize = NULL);
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virtual int GetUnconvertBytes() = 0 ;
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virtual DWORD GetConvertMode() = 0 ;
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virtual void SetConvertMode(DWORD mode) = 0 ;
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private:
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HRESULT WalkString(LPCSTR lpSrcStr, int cchSrc, LPINT lpnSize);
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BOOL EndOfDest(UCHAR tc);
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BOOL OutputOverflowBuffer();
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protected:
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virtual HRESULT ConvertChar(UCHAR tc, int cchSrc=-1) = 0;
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virtual BOOL CleanUp() = 0;
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protected:
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inline BOOL Output(UCHAR tc)
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{
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BOOL fDone = TRUE;
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if (m_fOutput) {
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if (m_cchOutput < m_cchDest) {
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*m_lpDestStr++ = tc;
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} else {
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(void)EndOfDest(tc);
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fDone = FALSE;
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}
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}
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m_cchOutput++;
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return fDone;
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}
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};
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#endif /* CONVBASE_H_ */
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