gecko-dev/intl/uconv/ucvlatin/nsUTF8ToUnicode.cpp

61 строка
2.2 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 "nsUTF8ToUnicode.h"
//----------------------------------------------------------------------
// Global functions and data [declaration]
static PRUint16 g_UTF8MappingTable[] = {
0x0001, 0x0004, 0x0005, 0x0008, 0x0000, 0x0000, 0xFFFF, 0x0000
};
static PRInt16 g_UTF8ShiftTable[] = {
3, uMultibytesCharset,
ShiftCell(u1ByteChar, 1, 0x00, 0x7F, 0x00, 0x00, 0x00, 0x7F),
ShiftCell(u2BytesUTF8, 2, 0xC0, 0xDF, 0x00, 0x00, 0x07, 0xFF),
ShiftCell(u3BytesUTF8, 3, 0xE0, 0xEF, 0x08, 0x00, 0xFF, 0xFF)
};
//----------------------------------------------------------------------
// Class nsUTF8ToUnicode [implementation]
nsUTF8ToUnicode::nsUTF8ToUnicode()
: nsTableDecoderSupport((uShiftTable*) &g_UTF8ShiftTable,
(uMappingTable*) &g_UTF8MappingTable)
{
}
nsresult nsUTF8ToUnicode::CreateInstance(nsISupports ** aResult)
{
*aResult = new nsUTF8ToUnicode();
return (*aResult == NULL)? NS_ERROR_OUT_OF_MEMORY : NS_OK;
}
//----------------------------------------------------------------------
// Subclassing of nsTableDecoderSupport class [implementation]
NS_IMETHODIMP nsUTF8ToUnicode::GetMaxLength(const char * aSrc,
PRInt32 aSrcLength,
PRInt32 * aDestLength)
{
*aDestLength = aSrcLength;
return NS_OK;
}