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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 "nsEscCharsetProber.h" |
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nsEscCharSetProber::nsEscCharSetProber(void) |
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{ |
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mCodingSM[0] = new nsCodingStateMachine(&HZSMModel); |
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mCodingSM[1] = new nsCodingStateMachine(&ISO2022CNSMModel); |
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mCodingSM[2] = new nsCodingStateMachine(&ISO2022JPSMModel); |
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mCodingSM[3] = new nsCodingStateMachine(&ISO2022KRSMModel); |
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mActiveSM = NUM_OF_ESC_CHARSETS; |
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mState = eDetecting; |
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mDetectedCharset = nsnull; |
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} |
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nsEscCharSetProber::~nsEscCharSetProber(void) |
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{ |
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for (PRUint32 i = 0; i < NUM_OF_ESC_CHARSETS; i++) |
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delete mCodingSM[i]; |
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} |
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void nsEscCharSetProber::Reset(void) |
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{ |
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mState = eDetecting; |
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for (PRUint32 i = 0; i < NUM_OF_ESC_CHARSETS; i++) |
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mCodingSM[i]->Reset(); |
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mActiveSM = NUM_OF_ESC_CHARSETS; |
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mDetectedCharset = nsnull; |
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} |
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nsProbingState nsEscCharSetProber::HandleData(const char* aBuf, PRUint32 aLen) |
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{ |
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nsSMState codingState; |
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PRInt32 j; |
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PRUint32 i; |
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for ( i = 0; i < aLen && mState == eDetecting; i++) |
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{ |
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for (j = mActiveSM-1; j>= 0; j--) |
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{ |
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//byte is feed to all active state machine |
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codingState = mCodingSM[j]->NextState(aBuf[i]); |
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if (codingState == eError) |
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{ |
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//got negative answer for this state machine, make it inactive |
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mActiveSM--; |
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if (mActiveSM == 0) |
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{ |
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mState = eNotMe; |
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return mState; |
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} |
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else if (j != (PRInt32)mActiveSM) |
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{ |
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nsCodingStateMachine* t; |
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t = mCodingSM[mActiveSM]; |
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mCodingSM[mActiveSM] = mCodingSM[j]; |
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mCodingSM[j] = t; |
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} |
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} |
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else if (codingState == eItsMe) |
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{ |
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mState = eFoundIt; |
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mDetectedCharset = mCodingSM[j]->GetCodingStateMachine(); |
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return mState; |
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} |
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} |
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} |
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105
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return mState; |
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} |
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