Aegisub/aegisub/universalchardet/nsSJISProber.h

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
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* Software distributed under the License is distributed on an "AS IS" basis,
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* License.
*
* The Original Code is mozilla.org code.
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* The Initial Developer of the Original Code is
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* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
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* Contributor(s):
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* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* ***** END LICENSE BLOCK ***** */
// 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"
class nsSJISProber: public nsCharSetProber {
public:
nsSJISProber(PRBool aIsPreferredLanguage)
:mIsPreferredLanguage(aIsPreferredLanguage)
{mCodingSM = new nsCodingStateMachine(&SJISSMModel);
Reset();}
virtual ~nsSJISProber(void){delete mCodingSM;}
nsProbingState HandleData(const char* aBuf, PRUint32 aLen);
const char* GetCharSetName() {return "Shift_JIS";}
nsProbingState GetState(void) {return mState;}
void Reset(void);
float GetConfidence(void);
void SetOpion() {}
protected:
nsCodingStateMachine* mCodingSM;
nsProbingState mState;
SJISContextAnalysis mContextAnalyser;
SJISDistributionAnalysis mDistributionAnalyser;
char mLastChar[2];
PRBool mIsPreferredLanguage;
};
#endif /* nsSJISProber_h__ */