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Clementine-audio-player-Mac.../3rdparty/universalchardet/nsSJISProber.h

81 lines
2.9 KiB
C++

/* -*- 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
*
* 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
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* 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"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** 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(bool aIsPreferredLanguage)
:mIsPreferredLanguage(aIsPreferredLanguage)
{mCodingSM = new nsCodingStateMachine(&SJISSMModel);
Reset();}
virtual ~nsSJISProber(void){delete mCodingSM;}
nsProbingState HandleData(const char* aBuf, uint32_t 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];
bool mIsPreferredLanguage;
};
#endif /* nsSJISProber_h__ */