Back to index

lightning-sunbird  0.9+nobinonly
nsISO2022KRToUnicode.h
Go to the documentation of this file.
00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 #ifndef nsISO2022KRToUnicode_h__
00038 #define nsISO2022KRToUnicode_h__
00039 #include "nsISupports.h"
00040 #include "nsUCSupport.h"
00041 
00042 
00043  
00044 class nsISO2022KRToUnicode : public nsBasicDecoderSupport
00045 {
00046 public:
00047   nsISO2022KRToUnicode()
00048   { 
00049     mState = mState_Init;
00050     mLastLegalState = mState_ASCII;
00051     mData = 0;
00052     mEUCKRDecoder = nsnull;
00053     mRunLength = 0;
00054   };
00055 
00056   virtual ~nsISO2022KRToUnicode()
00057   {
00058     NS_IF_RELEASE(mEUCKRDecoder);
00059   };
00060 
00061   NS_IMETHOD Convert(const char * aSrc, PRInt32 * aSrcLength,
00062      PRUnichar * aDest, PRInt32 * aDestLength) ;
00063   
00064   NS_IMETHOD GetMaxLength(const char * aSrc, PRInt32 aSrcLength,
00065      PRInt32 * aDestLength) 
00066   {
00067     *aDestLength = aSrcLength;
00068     return NS_OK;
00069   };
00070 
00071   NS_IMETHOD Reset()
00072   {
00073     mState = mState_Init;
00074     mLastLegalState = mState_ASCII;
00075     mRunLength = 0;
00076     return NS_OK;
00077   };
00078 
00079 private:
00080   enum {
00081     mState_Init,
00082     mState_ASCII,
00083     mState_ESC,
00084     mState_ESC_24,
00085     mState_ESC_24_29,
00086     mState_KSX1001_1992,
00087     mState_KSX1001_1992_2ndbyte,
00088     mState_ERROR
00089   } mState, mLastLegalState;
00090 
00091   PRUint8 mData;
00092 
00093   // Length of non-ASCII run
00094   PRUint32 mRunLength;
00095 
00096   nsIUnicodeDecoder *mEUCKRDecoder;
00097 };
00098 #endif // nsISO2022KRToUnicode_h__