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// for S-JIS encoding, obeserve characteristic:

// 1, kana character (or hankaku?) often have hight frequency of appereance

// 2, kana character often exist in group

// 3, certain combination of kana is never used in japanese language

#ifndef nsSJISProber_h__

#define nsSJISProber_h__

#include "nsCharSetProber.h"

#include "nsCodingStateMachine.h"

#include "JpCntx.h"

#include "CharDistribution.h"

class nsSJISProber: public nsCharSetProber {

public:

  nsSJISProber(PRBool aIsPreferredLanguage)

    :mIsPreferredLanguage(aIsPreferredLanguage)

  {mCodingSM = new nsCodingStateMachine(&SJISSMModel);

    Reset();}

  virtual ~nsSJISProber(void){delete mCodingSM;}

  nsProbingState HandleData(const char* aBuf, PRUint32 aLen);

  const char* GetCharSetName() {return "Shift_JIS";}

  nsProbingState GetState(void) {return mState;}

  void      Reset(void);

  float     GetConfidence(void);

  void      SetOpion() {}

protected:

  nsCodingStateMachine* mCodingSM;

  nsProbingState mState;

  SJISContextAnalysis mContextAnalyser;

  SJISDistributionAnalysis mDistributionAnalyser;

  char mLastChar[2];

  PRBool mIsPreferredLanguage;

};

#endif /* nsSJISProber_h__ */