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nsUniversalDetector.h

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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /*  -*- C++ -*-
00003 *  Copyright (C) 1998 <developer@mozilla.org>
00004 *  Copyright (C) 2008 <zealot.kai@gmail.com>
00005 *
00006 *  Permission is hereby granted, free of charge, to any person obtaining
00007 *  a copy of this software and associated documentation files (the
00008 *  "Software"), to deal in the Software without restriction, including
00009 *  without limitation the rights to use, copy, modify, merge, publish,
00010 *  distribute, sublicense, and/or sell copies of the Software, and to
00011 *  permit persons to whom the Software is furnished to do so, subject to
00012 *  the following conditions:
00013 *
00014 *  The above copyright notice and this permission notice shall be included 
00015 *  in all copies or substantial portions of the Software.
00016 *
00017 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00018 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00019 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00020 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00021 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00022 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00023 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00024 */
00025 
00026 #ifndef nsUniversalDetector_h__
00027 #define nsUniversalDetector_h__
00028 
00029 #include "nsCharSetProber.h"
00030 
00031 #define NUM_OF_CHARSET_PROBERS  3
00032 
00033 namespace kencodingprober {
00034 typedef enum {
00035   ePureAscii = 0,
00036   eEscAscii  = 1,
00037   eHighbyte  = 2
00038 } nsInputState;
00039 
00040 class KDE_NO_EXPORT nsUniversalDetector: public nsCharSetProber {
00041 public:
00042     nsUniversalDetector();
00043     virtual ~nsUniversalDetector();
00044     nsProbingState HandleData(const char* aBuf, unsigned int aLen);
00045     const char* GetCharSetName();
00046     void      Reset(void);
00047     float     GetConfidence(void);
00048     nsProbingState GetState();
00049     void      SetOpion() {};   
00050 
00051 protected:
00052    nsInputState  mInputState;
00053    bool  mDone;
00054    bool  mInTag;
00055    bool  mStart;
00056    bool  mGotData;
00057    char    mLastChar;
00058    const char *  mDetectedCharset;
00059    int mBestGuess;
00060 
00061    nsCharSetProber  *mCharSetProbers[NUM_OF_CHARSET_PROBERS];
00062    nsCharSetProber  *mEscCharSetProber;
00063 };
00064 }
00065 
00066 #endif
00067 

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