Line data    Source code

       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:
      22           0 :   nsSJISProber()
      23           0 :   {mCodingSM = new nsCodingStateMachine(&SJISSMModel);
      24           0 :     Reset();}
      25           0 :   virtual ~nsSJISProber(void){delete mCodingSM;}
      26             :   nsProbingState HandleData(const char* aBuf, uint32_t aLen);
      27           0 :   const char* GetCharSetName() {return "Shift_JIS";}
      28           0 :   nsProbingState GetState(void) {return mState;}
      29             :   void      Reset(void);
      30             :   float     GetConfidence(void);
      31             : 
      32             : protected:
      33             :   nsCodingStateMachine* mCodingSM;
      34             :   nsProbingState mState;
      35             : 
      36             :   SJISContextAnalysis mContextAnalyser;
      37             :   SJISDistributionAnalysis mDistributionAnalyser;
      38             : 
      39             :   char mLastChar[2];
      40             : };
      41             : 
      42             : 
      43             : #endif /* nsSJISProber_h__ */
      44             :