зеркало из https://github.com/mozilla/gecko-dev.git
109 строки
2.9 KiB
C++
109 строки
2.9 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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/**
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* A character set converter from GBK to Unicode.
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*
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*
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* @created 07/Sept/1999
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* @author Yueheng Xu, Yueheng.Xu@intel.com
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*/
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#include "nsGBKToUnicode.h"
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#include "nsUCvCnDll.h"
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#include "gbku.h"
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//----------------------------------------------------------------------
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// Class nsGBKToUnicode [implementation]
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//----------------------------------------------------------------------
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// Subclassing of nsTablesDecoderSupport class [implementation]
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NS_IMETHODIMP nsGBKToUnicode::GetMaxLength(const char * aSrc,
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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_IMETHODIMP nsGBKToUnicode::ConvertNoBuff(const char* aSrc,
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PRInt32 * aSrcLength,
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PRUnichar *aDest,
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PRInt32 * aDestLength)
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{
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PRInt32 i=0;
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PRInt32 iSrcLength = (*aSrcLength);
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DByte *pSrcDBCode = (DByte *)aSrc;
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PRUnichar *pDestDBCode = (PRUnichar *)aDest;
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PRInt32 iDestlen = 0;
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PRUint8 left, right;
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PRUint16 iGBKToUnicodeIndex = 0;
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nsresult rv=NS_OK;
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for (i=0;i<iSrcLength;i++)
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{
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pSrcDBCode = (DByte *)aSrc;
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pDestDBCode = aDest;
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if ( iDestlen >= (*aDestLength) )
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{
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rv = NS_OK_UDEC_MOREOUTPUT;
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break;
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}
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if ( *aSrc & 0x80 )
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{
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if(i+1 >= iSrcLength)
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{
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rv = NS_OK_UDEC_MOREINPUT;
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break;
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}
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// The source is a GBCode
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left = pSrcDBCode->leftbyte;
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right = pSrcDBCode->rightbyte;
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iGBKToUnicodeIndex = (left - 0x0081)*0x00BF + (right - 0x0040);
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*pDestDBCode = GBKToUnicodeTable[iGBKToUnicodeIndex];
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aSrc += 2;
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i++;
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}
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else
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{
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// The source is an ASCII
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*pDestDBCode = (PRUnichar) ( ((char )(*aSrc)) & 0x00ff);
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aSrc++;
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}
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iDestlen++;
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aDest++;
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*aSrcLength = i+1;
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}
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*aDestLength = iDestlen;
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return rv;
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}
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