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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ervin Yan <Ervin.Yan@Sun.Com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsISO2022CNToUnicode_h__
#define nsISO2022CNToUnicode_h__
#include "nsCOMPtr.h"
#include "nsISupports.h"
#include "nsUCSupport.h"
#define MBYTE 0x8e
#undef PMASK
#define PMASK 0xa0
#define SI 0x0f
#define SO 0x0e
#define ESC 0x1b
#define SS2 0x4e
#define SS3 0x4f
class nsISO2022CNToUnicode : public nsBasicDecoderSupport
{
public:
nsISO2022CNToUnicode() :
mState(eState_ASCII),
mPlaneID(0),
mRunLength(0) { };
virtual ~nsISO2022CNToUnicode() {};
NS_IMETHOD Convert(const char *aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength) ;
NS_IMETHOD GetMaxLength(const char * aSrc, PRInt32 aSrcLength,
PRInt32 * aDestLength)
{
*aDestLength = aSrcLength;
return NS_OK;
};
NS_IMETHOD Reset()
{
mState = eState_ASCII;
mPlaneID = 0;
mRunLength = 0;
return NS_OK;
};
private:
// State Machine ID
enum {
eState_ASCII,
eState_ESC, // ESC
eState_ESC_24, // ESC $
eState_ESC_24_29, // ESC $ )
eState_ESC_24_29_A, // ESC $ ) A
eState_GB2312_1980, // ESC $ ) A SO
eState_GB2312_1980_2ndbyte, // ESC $ ) A SO
eState_ESC_24_29_A_SO_SI, // ESC $ ) A SO SI
eState_ESC_24_29_G, // ESC $ ) G or H
eState_CNS11643_1, // ESC $ ) G SO
eState_CNS11643_1_2ndbyte, // ESC $ ) G SO
eState_ESC_24_29_G_SO_SI, // ESC $ ) G SO SI
eState_ESC_24_2A, // ESC $ *
eState_ESC_24_2A_H, // ESC $ * H
eState_ESC_24_2A_H_ESC, // ESC $ * H ESC
eState_CNS11643_2, // ESC $ * H ESC SS2
eState_CNS11643_2_2ndbyte, // ESC $ * H ESC SS2
eState_ESC_24_2A_H_ESC_SS2_SI, // ESC $ * H ESC SS2 SI
eState_ESC_24_2A_H_ESC_SS2_SI_ESC, // ESC $ * H ESC SS2 SI ESC
eState_ESC_24_2B, // ESC $ +
eState_ESC_24_2B_I, // ESC $ + I
eState_ESC_24_2B_I_ESC, // ESC $ + I ESC
eState_CNS11643_3, // ESC $ + I ESC SS3
eState_CNS11643_3_2ndbyte, // ESC $ + I ESC SS3
eState_ESC_24_2B_I_ESC_SS3_SI, // ESC $ + I ESC SI
eState_ESC_24_2B_I_ESC_SS3_SI_ESC, // ESC $ + I ESC SI ESC
eState_ERROR
} mState;
char mData;
// Plane number for CNS11643 code
int mPlaneID;
// Length of non-ASCII run
PRUint32 mRunLength;
// Decoder handler
nsCOMPtr<nsIUnicodeDecoder> mGB2312_Decoder;
nsCOMPtr<nsIUnicodeDecoder> mEUCTW_Decoder;
NS_IMETHOD GB2312_To_Unicode(unsigned char *aSrc, PRInt32 aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength) ;
NS_IMETHOD EUCTW_To_Unicode(unsigned char *aSrc, PRInt32 aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength) ;
};
#endif // nsISO2022CNToUnicode_h__
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