The Tor Browser: extensions/universalchardet/src/base/nsSJISProber.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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/. */

     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

    11 #ifndef nsSJISProber_h__

    12 #define nsSJISProber_h__

    14 #include "nsCharSetProber.h"

    15 #include "nsCodingStateMachine.h"

    16 #include "JpCntx.h"

    17 #include "CharDistribution.h"

    20 class nsSJISProber: public nsCharSetProber {

    21 public:

    22   nsSJISProber(bool aIsPreferredLanguage)

    23     :mIsPreferredLanguage(aIsPreferredLanguage)

    24   {mCodingSM = new nsCodingStateMachine(&SJISSMModel);

    25     Reset();}

    26   virtual ~nsSJISProber(void){delete mCodingSM;}

    27   nsProbingState HandleData(const char* aBuf, uint32_t aLen);

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

    29   nsProbingState GetState(void) {return mState;}

    30   void      Reset(void);

    31   float     GetConfidence(void);

    33 protected:

    34   nsCodingStateMachine* mCodingSM;

    35   nsProbingState mState;

    37   SJISContextAnalysis mContextAnalyser;

    38   SJISDistributionAnalysis mDistributionAnalyser;

    40   char mLastChar[2];

    41   bool mIsPreferredLanguage;

    43 };

    46 #endif /* nsSJISProber_h__ */

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