1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 // for S-JIS encoding, obeserve characteristic: 7 // 1, kana character (or hankaku?) often have hight frequency of appereance 8 // 2, kana character often exist in group 9 // 3, certain combination of kana is never used in japanese language 10 11 #ifndef nsSJISProber_h__ 12 #define nsSJISProber_h__ 13 14 #include "nsCharSetProber.h" 15 #include "nsCodingStateMachine.h" 16 #include "JpCntx.h" 17 #include "CharDistribution.h" 18 19 20 class nsSJISProber: public nsCharSetProber { 21 public: nsSJISProber(bool aIsPreferredLanguage)22 nsSJISProber(bool aIsPreferredLanguage) 23 :mIsPreferredLanguage(aIsPreferredLanguage) 24 {mCodingSM = new nsCodingStateMachine(&SJISSMModel); 25 Reset();} ~nsSJISProber(void)26 virtual ~nsSJISProber(void){delete mCodingSM;} 27 nsProbingState HandleData(const char* aBuf, uint32_t aLen); GetCharSetName()28 const char* GetCharSetName() {return "Shift_JIS";} GetState(void)29 nsProbingState GetState(void) {return mState;} 30 void Reset(void); 31 float GetConfidence(void); 32 33 protected: 34 nsCodingStateMachine* mCodingSM; 35 nsProbingState mState; 36 37 SJISContextAnalysis mContextAnalyser; 38 SJISDistributionAnalysis mDistributionAnalyser; 39 40 char mLastChar[2]; 41 bool mIsPreferredLanguage; 42 43 }; 44 45 46 #endif /* nsSJISProber_h__ */ 47 48