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nsUniversalDetector.h

/* -*- Mode: C++; tab-width: 2; 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
 * the License. You may obtain a copy of the License at
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 * 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 Communicator client 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.
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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"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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#ifndef nsUniversalDetector_h__
#define nsUniversalDetector_h__

#include "nscore.h" // included to be compilable with C::B

class nsCharSetProber;

#define NUM_OF_CHARSET_PROBERS  3

typedef enum {
    ePureAscii = 0,
    eEscAscii  = 1,
    eHighbyte  = 2
} nsInputState;

#define NS_FILTER_CHINESE_SIMPLIFIED  0x01
#define NS_FILTER_CHINESE_TRADITIONAL 0x02
#define NS_FILTER_JAPANESE            0x04
#define NS_FILTER_KOREAN              0x08
#define NS_FILTER_NON_CJK             0x10
#define NS_FILTER_ALL                 0x1F
#define NS_FILTER_CHINESE (NS_FILTER_CHINESE_SIMPLIFIED | \
                           NS_FILTER_CHINESE_TRADITIONAL)
#define NS_FILTER_CJK (NS_FILTER_CHINESE_SIMPLIFIED | \
                       NS_FILTER_CHINESE_TRADITIONAL | \
                       NS_FILTER_JAPANESE | \
                       NS_FILTER_KOREAN)

00066 class nsUniversalDetector {
public:
    nsUniversalDetector(PRUint32 aLanguageFilter);
    virtual ~nsUniversalDetector();
    virtual nsresult HandleData(const char* aBuf, PRUint32 aLen);
    virtual void DataEnd(void);

protected:
   virtual void Report(const char* aCharset) = 0;
    virtual void Reset();
    nsInputState  mInputState;
    PRBool  mDone;
    PRBool  mInTag;
//    PRBool  mStart; // not needed for C::B (jens 2009-08-05)
    PRBool  mGotData;
    char    mLastChar;
   const char *  mDetectedCharset;
    PRInt32 mBestGuess;
    PRUint32 mLanguageFilter;

    nsCharSetProber  *mCharSetProbers[NUM_OF_CHARSET_PROBERS];
    nsCharSetProber  *mEscCharSetProber;
};

#endif


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