nsUniversalDetector.h

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#ifndef nsUniversalDetector_h__
#define nsUniversalDetector_h__

#include "nscore.h"

class nsCharSetProber;

#define NUM_OF_CHARSET_PROBERS  3

typedef enum {
  ePureAscii = 0,
  eEscAscii  = 1,
  eHighbyte  = 2
} nsInputState;

class nsUniversalDetector {
public:
   nsUniversalDetector();
   virtual ~nsUniversalDetector();
   virtual nsresult HandleData(const char* aBuf, PRUint32 aLen);
   virtual void DataEnd(void);

protected:
   virtual void Report(const char* aCharset) = 0;
   virtual void Reset();
   nsInputState  mInputState;
   PRBool  mDone;
   PRBool  mInTag;
   PRBool  mStart;
   PRBool  mGotData;
   char    mLastChar;
   const char *  mDetectedCharset;
   PRInt32 mBestGuess;

   nsCharSetProber  *mCharSetProbers[NUM_OF_CHARSET_PROBERS];
   nsCharSetProber  *mEscCharSetProber;
};

#endif