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137 lines
4.7 KiB
C++
137 lines
4.7 KiB
C++
/* -*- 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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* Ervin Yan <Ervin.Yan@Sun.Com>
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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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#ifndef nsISO2022CNToUnicode_h__
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#define nsISO2022CNToUnicode_h__
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#include "nsCOMPtr.h"
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#include "nsISupports.h"
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#include "nsUCSupport.h"
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#define MBYTE 0x8e
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#undef PMASK
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#define PMASK 0xa0
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#define SI 0x0f
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#define SO 0x0e
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#define ESC 0x1b
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#define SS2 0x4e
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#define SS3 0x4f
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class nsISO2022CNToUnicode : public nsBasicDecoderSupport
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{
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public:
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nsISO2022CNToUnicode() :
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mState(eState_ASCII),
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mPlaneID(0),
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mRunLength(0) { }
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virtual ~nsISO2022CNToUnicode() {}
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NS_IMETHOD Convert(const char *aSrc, PRInt32 * aSrcLength,
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PRUnichar * aDest, PRInt32 * aDestLength) ;
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NS_IMETHOD GetMaxLength(const char * aSrc, PRInt32 aSrcLength,
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PRInt32 * aDestLength)
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{
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*aDestLength = aSrcLength;
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return NS_OK;
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}
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NS_IMETHOD Reset()
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{
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mState = eState_ASCII;
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mPlaneID = 0;
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mRunLength = 0;
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return NS_OK;
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}
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private:
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// State Machine ID
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enum {
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eState_ASCII,
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eState_ESC, // ESC
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eState_ESC_24, // ESC $
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eState_ESC_24_29, // ESC $ )
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eState_ESC_24_29_A, // ESC $ ) A
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eState_GB2312_1980, // ESC $ ) A SO
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eState_GB2312_1980_2ndbyte, // ESC $ ) A SO
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eState_ESC_24_29_A_SO_SI, // ESC $ ) A SO SI
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eState_ESC_24_29_G, // ESC $ ) G or H
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eState_CNS11643_1, // ESC $ ) G SO
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eState_CNS11643_1_2ndbyte, // ESC $ ) G SO
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eState_ESC_24_29_G_SO_SI, // ESC $ ) G SO SI
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eState_ESC_24_2A, // ESC $ *
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eState_ESC_24_2A_H, // ESC $ * H
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eState_ESC_24_2A_H_ESC, // ESC $ * H ESC
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eState_CNS11643_2, // ESC $ * H ESC SS2
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eState_CNS11643_2_2ndbyte, // ESC $ * H ESC SS2
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eState_ESC_24_2A_H_ESC_SS2_SI, // ESC $ * H ESC SS2 SI
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eState_ESC_24_2A_H_ESC_SS2_SI_ESC, // ESC $ * H ESC SS2 SI ESC
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eState_ESC_24_2B, // ESC $ +
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eState_ESC_24_2B_I, // ESC $ + I
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eState_ESC_24_2B_I_ESC, // ESC $ + I ESC
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eState_CNS11643_3, // ESC $ + I ESC SS3
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eState_CNS11643_3_2ndbyte, // ESC $ + I ESC SS3
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eState_ESC_24_2B_I_ESC_SS3_SI, // ESC $ + I ESC SI
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eState_ESC_24_2B_I_ESC_SS3_SI_ESC, // ESC $ + I ESC SI ESC
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eState_ERROR
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} mState;
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char mData;
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// Plane number for CNS11643 code
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int mPlaneID;
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// Length of non-ASCII run
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PRUint32 mRunLength;
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// Decoder handler
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nsCOMPtr<nsIUnicodeDecoder> mGB2312_Decoder;
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nsCOMPtr<nsIUnicodeDecoder> mEUCTW_Decoder;
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NS_IMETHOD GB2312_To_Unicode(unsigned char *aSrc, PRInt32 aSrcLength,
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PRUnichar * aDest, PRInt32 * aDestLength) ;
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NS_IMETHOD EUCTW_To_Unicode(unsigned char *aSrc, PRInt32 aSrcLength,
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PRUnichar * aDest, PRInt32 * aDestLength) ;
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};
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#endif // nsISO2022CNToUnicode_h__
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