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37 :
38 : // for S-JIS encoding, obeserve characteristic:
39 : // 1, kana character (or hankaku?) often have hight frequency of appereance
40 : // 2, kana character often exist in group
41 : // 3, certain combination of kana is never used in japanese language
42 :
43 : #ifndef nsEUCJPProber_h__
44 : #define nsEUCJPProber_h__
45 :
46 : #include "nsCharSetProber.h"
47 : #include "nsCodingStateMachine.h"
48 : #include "JpCntx.h"
49 : #include "CharDistribution.h"
50 :
51 : class nsEUCJPProber: public nsCharSetProber {
52 : public:
53 0 : nsEUCJPProber(bool aIsPreferredLanguage)
54 0 : :mIsPreferredLanguage(aIsPreferredLanguage)
55 0 : {mCodingSM = new nsCodingStateMachine(&EUCJPSMModel);
56 0 : Reset();}
57 0 : virtual ~nsEUCJPProber(void){delete mCodingSM;}
58 : nsProbingState HandleData(const char* aBuf, PRUint32 aLen);
59 0 : const char* GetCharSetName() {return "EUC-JP";}
60 0 : nsProbingState GetState(void) {return mState;}
61 : void Reset(void);
62 : float GetConfidence(void);
63 0 : void SetOpion() {}
64 :
65 : protected:
66 : nsCodingStateMachine* mCodingSM;
67 : nsProbingState mState;
68 :
69 : EUCJPContextAnalysis mContextAnalyser;
70 : EUCJPDistributionAnalysis mDistributionAnalyser;
71 :
72 : char mLastChar[2];
73 : bool mIsPreferredLanguage;
74 : };
75 :
76 :
77 : #endif /* nsEUCJPProber_h__ */
78 :
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