intl/uconv/ucvko/nsISO2022KRToUnicode.h

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  37 #ifndef nsISO2022KRToUnicode_h__
  38 #define nsISO2022KRToUnicode_h__
  39 #include "nsISupports.h"
  40 #include "nsUCSupport.h"
  41
  42
  43
  44 class nsISO2022KRToUnicode : public nsBasicDecoderSupport
  45 {
  46 public:
  47   nsISO2022KRToUnicode()
  48   {
  49     mState = mState_Init;
  50     mLastLegalState = mState_ASCII;
  51     mData = 0;
  52     mEUCKRDecoder = nsnull;
  53     mRunLength = 0;
  54   }
  55
  56   virtual ~nsISO2022KRToUnicode()
  57   {
  58     NS_IF_RELEASE(mEUCKRDecoder);
  59   }
  60
  61   NS_IMETHOD Convert(const char * aSrc, PRInt32 * aSrcLength,
  62      PRUnichar * aDest, PRInt32 * aDestLength) ;
  63
  64   NS_IMETHOD GetMaxLength(const char * aSrc, PRInt32 aSrcLength,
  65      PRInt32 * aDestLength)
  66   {
  67     *aDestLength = aSrcLength;
  68     return NS_OK;
  69   }
  70
  71   NS_IMETHOD Reset()
  72   {
  73     mState = mState_Init;
  74     mLastLegalState = mState_ASCII;
  75     mRunLength = 0;
  76     return NS_OK;
  77   }
  78
  79 private:
  80   enum {
  81     mState_Init,
  82     mState_ASCII,
  83     mState_ESC,
  84     mState_ESC_24,
  85     mState_ESC_24_29,
  86     mState_KSX1001_1992,
  87     mState_KSX1001_1992_2ndbyte,
  88     mState_ERROR
  89   } mState, mLastLegalState;
  90
  91   PRUint8 mData;
  92
  93   // Length of non-ASCII run
  94   PRUint32 mRunLength;
  95
  96   nsIUnicodeDecoder *mEUCKRDecoder;
  97 };
  98 #endif // nsISO2022KRToUnicode_h__