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/* -*- Mode: C++; tab-width: 2; 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 Communicator client 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):
* Yueheng Xu, yueheng.xu@intel.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 ***** */
#include "nsUnicodeToGB2312V2.h"
#include "nsICharRepresentable.h"
#include "nsUCvCnDll.h"
#include "gbku.h"
//----------------------------------------------------------------------
// Class nsUnicodeToGB2312V2 [implementation]
nsUnicodeToGB2312V2::nsUnicodeToGB2312V2() :
nsEncoderSupport(2)
{
mUtil.InitToGBKTable();
}
NS_IMETHODIMP nsUnicodeToGB2312V2::ConvertNoBuff(const PRUnichar * aSrc,
PRInt32 * aSrcLength,
char * aDest,
PRInt32 * aDestLength)
{
PRInt32 iSrcLength = 0;
PRInt32 iDestLength = 0;
nsresult res = NS_OK;
while (iSrcLength < *aSrcLength)
{
//if unicode's hi byte has something, it is not ASCII, must be a GB
if(IS_ASCII(*aSrc))
{
// this is an ASCII
*aDest = CAST_UNICHAR_TO_CHAR(*aSrc);
aDest++; // increment 1 byte
iDestLength +=1;
} else {
char byte1, byte2;
if(mUtil.UnicodeToGBKChar(*aSrc, PR_FALSE, &byte1, &byte2))
{
if(iDestLength+2 > *aDestLength)
{
res = NS_OK_UENC_MOREOUTPUT;
break;
}
aDest[0]=byte1;
aDest[1]=byte2;
aDest += 2; // increment 2 bytes
iDestLength +=2; // each GB char count as two in char* string
} else {
// cannot convert
res= NS_ERROR_UENC_NOMAPPING;
iSrcLength++; // include length of the unmapped character
break;
}
}
iSrcLength++ ; // each unicode char just count as one in PRUnichar* string
aSrc++;
if ( iDestLength >= (*aDestLength) && (iSrcLength < *aSrcLength ))
{
res = NS_OK_UENC_MOREOUTPUT;
break;
}
}
*aDestLength = iDestLength;
*aSrcLength = iSrcLength;
return res;
}
//----------------------------------------------------------------------
// Subclassing of nsTableEncoderSupport class [implementation]
NS_IMETHODIMP nsUnicodeToGB2312V2::FillInfo(PRUint32 *aInfo)
{
mUtil.FillGB2312Info(aInfo);
//GB2312 font lib also have single byte ASCII characters, set them here
for ( PRUint16 u = 0x0000; u <= 0x007F; u++)
SET_REPRESENTABLE(aInfo, u);
return NS_OK;
}
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