gecko-dev/intl/uconv/ucvlatin/nsUCS4LEToUnicode.cpp
1999-06-09 20:33:07 +00:00

65 lines
2.1 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.
*/
#include "nsUCS4LEToUnicode.h"
//----------------------------------------------------------------------
// Global functions and data [declaration]
static PRUint16 g_UCS4LEMappingTable[] = {
0x0001, 0x0004, 0x0005, 0x0008, 0x0000, 0x0000, 0xFFFF, 0x0000
};
static PRInt16 g_UCS4LEShiftTable[] = {
0, u4BytesSwapCharset,
ShiftCell(0, 0, 0, 0, 0, 0, 0, 0),
};
//----------------------------------------------------------------------
// Class nsUCS4LEToUnicode [implementation]
nsUCS4LEToUnicode::nsUCS4LEToUnicode()
: nsTableDecoderSupport((uShiftTable*) &g_UCS4LEShiftTable,
(uMappingTable*) &g_UCS4LEMappingTable)
{
}
nsresult nsUCS4LEToUnicode::CreateInstance(nsISupports ** aResult)
{
*aResult = new nsUCS4LEToUnicode();
return (*aResult == NULL)? NS_ERROR_OUT_OF_MEMORY : NS_OK;
}
//----------------------------------------------------------------------
// Subclassing of nsTableDecoderSupport class [implementation]
NS_IMETHODIMP nsUCS4LEToUnicode::GetMaxLength(const char * aSrc,
PRInt32 aSrcLength,
PRInt32 * aDestLength)
{
if(0 == (aSrcLength % 4))
{
*aDestLength = aSrcLength / 4;
return NS_OK_UENC_EXACTLENGTH;
} else {
*aDestLength = (aSrcLength / 4) + 1;
return NS_OK;
}
}