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0001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 0002 /* ***** BEGIN LICENSE BLOCK ***** 0003 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 0004 * 0005 * The contents of this file are subject to the Mozilla Public License Version 0006 * 1.1 (the "License"); you may not use this file except in compliance with 0007 * the License. You may obtain a copy of the License at 0008 * http://www.mozilla.org/MPL/ 0009 * 0010 * Software distributed under the License is distributed on an "AS IS" basis, 0011 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 0012 * for the specific language governing rights and limitations under the 0013 * License. 0014 * 0015 * The Original Code is mozilla.org code. 0016 * 0017 * The Initial Developer of the Original Code is 0018 * Netscape Communications Corporation. 0019 * Portions created by the Initial Developer are Copyright (C) 1998 0020 * the Initial Developer. All Rights Reserved. 0021 * 0022 * Contributor(s): 0023 * 0024 * Alternatively, the contents of this file may be used under the terms of 0025 * either the GNU General Public License Version 2 or later (the "GPL"), or 0026 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 0027 * in which case the provisions of the GPL or the LGPL are applicable instead 0028 * of those above. If you wish to allow use of your version of this file only 0029 * under the terms of either the GPL or the LGPL, and not to allow others to 0030 * use your version of this file under the terms of the MPL, indicate your 0031 * decision by deleting the provisions above and replace them with the notice 0032 * and other provisions required by the GPL or the LGPL. If you do not delete 0033 * the provisions above, a recipient may use your version of this file under 0034 * the terms of any one of the MPL, the GPL or the LGPL. 0035 * 0036 * ***** END LICENSE BLOCK ***** */ 0037 0038 #pragma GCC visibility push(hidden) 0039 0040 #include "nsEUCTWProber.h" 0041 0042 void nsEUCTWProber::Reset(void) 0043 { 0044 mCodingSM->Reset(); 0045 mState = eDetecting; 0046 mDistributionAnalyser.Reset(); 0047 //mContextAnalyser.Reset(); 0048 } 0049 0050 nsProbingState nsEUCTWProber::HandleData(const char* aBuf, PRUint32 aLen) 0051 { 0052 nsSMState codingState; 0053 0054 for (PRUint32 i = 0; i < aLen; i++) 0055 { 0056 codingState = mCodingSM->NextState(aBuf[i]); 0057 if (codingState == eError) 0058 { 0059 mState = eNotMe; 0060 break; 0061 } 0062 if (codingState == eItsMe) 0063 { 0064 mState = eFoundIt; 0065 break; 0066 } 0067 if (codingState == eStart) 0068 { 0069 PRUint32 charLen = mCodingSM->GetCurrentCharLen(); 0070 0071 if (i == 0) 0072 { 0073 mLastChar[1] = aBuf[0]; 0074 mDistributionAnalyser.HandleOneChar(mLastChar, charLen); 0075 } 0076 else 0077 mDistributionAnalyser.HandleOneChar(aBuf+i-1, charLen); 0078 } 0079 } 0080 0081 mLastChar[0] = aBuf[aLen-1]; 0082 0083 if (mState == eDetecting) 0084 if (mDistributionAnalyser.GotEnoughData() && GetConfidence() > SHORTCUT_THRESHOLD) 0085 mState = eFoundIt; 0086 // else 0087 // mDistributionAnalyser.HandleData(aBuf, aLen); 0088 0089 return mState; 0090 } 0091 0092 float nsEUCTWProber::GetConfidence(void) 0093 { 0094 float distribCf = mDistributionAnalyser.GetConfidence(); 0095 0096 return (float)distribCf; 0097 } 0098 0099 #pragma GCC visibility pop 0100