Blame src/nsEUCTWProber.cpp

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 *
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 * The contents of this file are subject to the Mozilla Public License Version
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 * 1.1 (the "License"); you may not use this file except in compliance with
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 * the License. You may obtain a copy of the License at
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 * http://www.mozilla.org/MPL/
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 *
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 * Software distributed under the License is distributed on an "AS IS" basis,
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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 * for the specific language governing rights and limitations under the
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 * License.
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 *
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 * The Original Code is mozilla.org code.
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 *
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 * The Initial Developer of the Original Code is
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 * Netscape Communications Corporation.
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 * Portions created by the Initial Developer are Copyright (C) 1998
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 * the Initial Developer. All Rights Reserved.
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 *
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 * Contributor(s):
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 *
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 * Alternatively, the contents of this file may be used under the terms of
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
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 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * of those above. If you wish to allow use of your version of this file only
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 * under the terms of either the GPL or the LGPL, and not to allow others to
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 * use your version of this file under the terms of the MPL, indicate your
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 * decision by deleting the provisions above and replace them with the notice
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 * and other provisions required by the GPL or the LGPL. If you do not delete
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 * the provisions above, a recipient may use your version of this file under
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 * the terms of any one of the MPL, the GPL or the LGPL.
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 *
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 * ***** END LICENSE BLOCK ***** */
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#include "nsEUCTWProber.h"
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void  nsEUCTWProber::Reset(void)
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{
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  mCodingSM->Reset(); 
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  mState = eDetecting;
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  mDistributionAnalyser.Reset();
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  //mContextAnalyser.Reset();
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}
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nsProbingState nsEUCTWProber::HandleData(const char* aBuf, PRUint32 aLen)
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{
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  nsSMState codingState;
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  for (PRUint32 i = 0; i < aLen; i++)
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  {
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    codingState = mCodingSM->NextState(aBuf[i]);
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    if (codingState == eError)
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    {
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      mState = eNotMe;
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      break;
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    }
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    if (codingState == eItsMe)
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    {
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      mState = eFoundIt;
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      break;
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    }
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    if (codingState == eStart)
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    {
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      PRUint32 charLen = mCodingSM->GetCurrentCharLen();
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      if (i == 0)
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      {
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        mLastChar[1] = aBuf[0];
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        mDistributionAnalyser.HandleOneChar(mLastChar, charLen);
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      }
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      else
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        mDistributionAnalyser.HandleOneChar(aBuf+i-1, charLen);
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    }
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  }
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  mLastChar[0] = aBuf[aLen-1];
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  if (mState == eDetecting)
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    if (mDistributionAnalyser.GotEnoughData() && GetConfidence() > SHORTCUT_THRESHOLD)
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      mState = eFoundIt;
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//    else
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//      mDistributionAnalyser.HandleData(aBuf, aLen);
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  return mState;
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}
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float nsEUCTWProber::GetConfidence(void)
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{
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  float distribCf = mDistributionAnalyser.GetConfidence();
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  return (float)distribCf;
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}
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