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104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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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