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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"

namespace kencodingprober
{
class KCODECS_NO_EXPORT nsSJISProber: public nsCharSetProber
{
public:
    nsSJISProber(void)
    {
        mCodingSM = new nsCodingStateMachine(&SJISSMModel);
        Reset();
    };
    virtual ~nsSJISProber(void)
    {
        delete mCodingSM;
    };
    nsProbingState HandleData(const char *aBuf, unsigned int aLen) Q_DECL_OVERRIDE;
    const char *GetCharSetName() Q_DECL_OVERRIDE
    {
        return "Shift_JIS";
    };
    nsProbingState GetState(void) Q_DECL_OVERRIDE
    {
        return mState;
    };
    void      Reset(void) Q_DECL_OVERRIDE;
    float     GetConfidence(void) Q_DECL_OVERRIDE;
    void      SetOpion() Q_DECL_OVERRIDE {};

protected:
    nsCodingStateMachine *mCodingSM;
    nsProbingState mState;

    SJISContextAnalysis mContextAnalyser;
    SJISDistributionAnalysis mDistributionAnalyser;

    char mLastChar[2];

};
}

#endif /* nsSJISProber_h__ */

