зеркало из https://github.com/mozilla/gecko-dev.git
83 строки
3.1 KiB
C++
83 строки
3.1 KiB
C++
/* -*- 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 Netscape Communications Corporation are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* 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 LGPL or the GPL. 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 "nsUCS4LEToUnicode.h"
|
|
|
|
//----------------------------------------------------------------------
|
|
// Global functions and data [declaration]
|
|
|
|
static const PRUint16 g_UCS4LEMappingTable[] = {
|
|
0x0001, 0x0004, 0x0005, 0x0008, 0x0000, 0x0000, 0xFFFF, 0x0000
|
|
};
|
|
|
|
static const 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;
|
|
}
|
|
}
|