gecko-dev/intl/uconv/ucvcn/nsEUCTWToUnicode.cpp
1999-04-19 20:41:30 +00:00

101 lines
2.8 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 "nsEUCTWToUnicode.h"
//----------------------------------------------------------------------
// Global functions and data [declaration]
static PRUint16 g_ASCIIMappingTable[] = {
0x0001, 0x0004, 0x0005, 0x0008, 0x0000, 0x0000, 0x007F, 0x0000
};
static PRUint16 g_CNS1MappingTable[] = {
#include "cns_1.ut"
};
static PRUint16 g_CNS2MappingTable[] = {
#include "cns_2.ut"
};
static PRInt16 g_ASCIIShiftTable[] = {
0, u1ByteCharset,
ShiftCell(0,0,0,0,0,0,0,0)
};
static PRInt16 g_CNS1ShiftTable[] = {
0, u2BytesGRCharset,
ShiftCell(0, 0, 0, 0, 0, 0, 0, 0),
};
static PRInt16 g_CNS2ShiftTable[] = {
0, u2BytesGRPrefix8EA2Charset,
ShiftCell(0, 0, 0, 0, 0, 0, 0, 0),
};
static PRInt16 *g_EUCTWShiftTableSet [] = {
g_ASCIIShiftTable,
g_CNS1ShiftTable,
g_CNS2ShiftTable
};
static PRUint16 *g_EUCTWMappingTableSet [] ={
g_ASCIIMappingTable,
g_CNS1MappingTable,
g_CNS2MappingTable
};
static uRange g_EUCTWRanges[] = {
{ 0x00, 0x7E },
{ 0xA1, 0xFE },
{ 0x8E, 0x8E }
};
//----------------------------------------------------------------------
// Class nsEUCTWToUnicode [implementation]
nsEUCTWToUnicode::nsEUCTWToUnicode()
: nsMultiTableDecoderSupport(3,
(uRange*) &g_EUCTWRanges,
(uShiftTable**) &g_EUCTWShiftTableSet,
(uMappingTable**) &g_EUCTWMappingTableSet)
{
}
nsresult nsEUCTWToUnicode::CreateInstance(nsISupports ** aResult)
{
*aResult = new nsEUCTWToUnicode();
return (*aResult == NULL)? NS_ERROR_OUT_OF_MEMORY : NS_OK;
}
//----------------------------------------------------------------------
// Subclassing of nsTablesDecoderSupport class [implementation]
NS_IMETHODIMP nsEUCTWToUnicode::GetMaxLength(const char * aSrc,
PRInt32 aSrcLength,
PRInt32 * aDestLength)
{
// we are a single byte to Unicode converter, so...
*aDestLength = aSrcLength;
return NS_OK_UDEC_EXACTLENGTH;
}