mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-12 12:55:46 +00:00
174 lines
4.0 KiB
C++
174 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (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/NPL/
|
|
*
|
|
* 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 Communicator client code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape Communications
|
|
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
|
* Netscape Communications Corporation. All Rights Reserved.
|
|
*/
|
|
|
|
#define INTEL_CHANGE
|
|
|
|
#include "nsUnicodeToGB2312V2.h"
|
|
#include "nsUCvCnDll.h"
|
|
|
|
|
|
#ifdef INTEL_CHANGE
|
|
#define _GBU_TABLE_ // make the table in the include file to be extern
|
|
#include "gbu.h"
|
|
#endif
|
|
|
|
//----------------------------------------------------------------------
|
|
// Global functions and data [declaration]
|
|
|
|
|
|
static PRInt16 g_ASCIIShiftTable[] = {
|
|
0, u1ByteCharset,
|
|
ShiftCell(0,0,0,0,0,0,0,0)
|
|
};
|
|
|
|
static PRInt16 g_GB2312ShiftTable[] = {
|
|
0, u2BytesGRCharset,
|
|
ShiftCell(0,0,0,0,0,0,0,0)
|
|
};
|
|
|
|
static PRInt16 *g_GB2312ShiftTableSet [] = {
|
|
g_ASCIIShiftTable,
|
|
g_GB2312ShiftTable
|
|
};
|
|
|
|
static PRUint16 *g_GB2312MappingTableSet [] ={
|
|
g_AsciiMapping,
|
|
g_ufGB2312Mapping
|
|
};
|
|
//----------------------------------------------------------------------
|
|
// Class nsUnicodeToGB2312V2 [implementation]
|
|
|
|
nsUnicodeToGB2312V2::nsUnicodeToGB2312V2()
|
|
: nsMultiTableEncoderSupport(2,
|
|
(uShiftTable**) &g_GB2312ShiftTableSet,
|
|
(uMappingTable**) &g_GB2312MappingTableSet)
|
|
{
|
|
}
|
|
|
|
#ifdef INTEL_CHANGE
|
|
|
|
#define TRUE 1
|
|
#define FALSE 0
|
|
|
|
void UnicodeToGB(PRUnichar SrcUnicode, DByte *pGBCode)
|
|
{
|
|
short int iRet = FALSE;
|
|
short int i = 0;
|
|
short int iGBToUnicodeIndex = 0;
|
|
|
|
|
|
for ( i=0; i<MAX_GB_LENGTH; i++)
|
|
{
|
|
if ( SrcUnicode == GBToUnicodeTable[i] )
|
|
{
|
|
iGBToUnicodeIndex = i;
|
|
iRet = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( iRet )
|
|
{
|
|
//convert from one dimensional index to (left, right) pair
|
|
if(pGBCode)
|
|
{
|
|
pGBCode->leftbyte = (char) ( iGBToUnicodeIndex / (0x007e - 0x0020) + 0x0021) ;
|
|
pGBCode->leftbyte |= 0x80;
|
|
pGBCode->rightbyte = (char) ( iGBToUnicodeIndex % (0x007e - 0x0020)+ 0x0021);
|
|
pGBCode->rightbyte |= 0x80;
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP nsUnicodeToGB2312V2::ConvertNoBuff(const PRUnichar * aSrc,
|
|
PRInt32 * aSrcLength,
|
|
char * aDest,
|
|
PRInt32 * aDestLength)
|
|
{
|
|
PRInt32 i=0;
|
|
PRInt32 iSrcLength = *aSrcLength;
|
|
DByte *pDestDBCode;
|
|
DByte *pSrcDBCode;
|
|
PRInt32 iDestLength = 0;
|
|
|
|
PRUnichar *pSrc = (PRUnichar *)aSrc;
|
|
|
|
pDestDBCode = (DByte *)aDest;
|
|
|
|
for (i=0;i< iSrcLength;i++)
|
|
{
|
|
pDestDBCode = (DByte *)aDest;
|
|
|
|
if( (*pSrc) & 0xff00 )
|
|
{
|
|
// hi byte has something, it is not ASCII, must be a GB
|
|
|
|
UnicodeToGB( *pSrc, pDestDBCode);
|
|
aDest += 2; // increment 2 bytes
|
|
pDestDBCode = (DByte *)aDest;
|
|
iDestLength +=2;
|
|
}
|
|
else
|
|
{
|
|
// this is an ASCII
|
|
pSrcDBCode = (DByte *)pSrc;
|
|
*aDest = pSrcDBCode->leftbyte;
|
|
aDest++; // increment 1 byte
|
|
iDestLength +=1;
|
|
}
|
|
pSrc++; // increment 2 bytes
|
|
|
|
if ( iDestLength >= (*aDestLength) )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
*aDestLength = iDestLength;
|
|
*aSrcLength = i;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
#endif
|
|
|
|
nsresult nsUnicodeToGB2312V2::CreateInstance(nsISupports ** aResult)
|
|
{
|
|
nsIUnicodeEncoder *p = new nsUnicodeToGB2312V2();
|
|
if(p) {
|
|
*aResult = p;
|
|
return NS_OK;
|
|
}
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Subclassing of nsTableEncoderSupport class [implementation]
|
|
|
|
NS_IMETHODIMP nsUnicodeToGB2312V2::GetMaxLength(const PRUnichar * aSrc,
|
|
PRInt32 aSrcLength,
|
|
PRInt32 * aDestLength)
|
|
{
|
|
*aDestLength = 2 * aSrcLength;
|
|
return NS_OK;
|
|
}
|