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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#include <rtl/textcvt.h>
#include "xlat.hxx"
namespace {
#define MAX_CVT_SELECT 6
class ConverterCache
{
public:
explicit ConverterCache();
~ConverterCache();
sal_uInt16 convertOne( int nSelect, sal_Unicode );
private:
void ensureConverter( int nSelect );
rtl_UnicodeToTextConverter maConverterCache[ MAX_CVT_SELECT+1 ];
rtl_UnicodeToTextContext maContexts[ MAX_CVT_SELECT+1 ];
};
ConverterCache::ConverterCache()
{
for( int i = 0; i <= MAX_CVT_SELECT; ++i)
{
maConverterCache[i] = nullptr;
maContexts[i] = nullptr;
}
}
ConverterCache::~ConverterCache()
{
for( int i = 0; i <= MAX_CVT_SELECT; ++i)
{
if( !maContexts[i] )
continue;
rtl_destroyUnicodeToTextContext( maConverterCache[i], maContexts[i] );
rtl_destroyUnicodeToTextConverter( maConverterCache[i] );
}
}
void ConverterCache::ensureConverter( int nSelect )
{
// SAL_WARN_IF( (2>nSelect) || (nSelect>MAX_CVT_SELECT)), "vcl", "invalid XLAT.Converter requested" );
rtl_UnicodeToTextContext aContext = maContexts[ nSelect ];
if( !aContext )
{
rtl_TextEncoding eRecodeFrom = RTL_TEXTENCODING_UNICODE;
switch( nSelect )
{
default: nSelect = 1; [[fallthrough]]; // to unicode recoding
case 1: eRecodeFrom = RTL_TEXTENCODING_UNICODE; break;
case 2: eRecodeFrom = RTL_TEXTENCODING_SHIFT_JIS; break;
case 3: eRecodeFrom = RTL_TEXTENCODING_GB_2312; break;
case 4: eRecodeFrom = RTL_TEXTENCODING_BIG5; break;
case 5: eRecodeFrom = RTL_TEXTENCODING_MS_949; break;
case 6: eRecodeFrom = RTL_TEXTENCODING_MS_1361; break;
}
rtl_UnicodeToTextConverter aRecodeConverter = rtl_createUnicodeToTextConverter( eRecodeFrom );
maConverterCache[ nSelect ] = aRecodeConverter;
aContext = rtl_createUnicodeToTextContext( aRecodeConverter );
maContexts[ nSelect ] = aContext;
}
rtl_resetUnicodeToTextContext( maConverterCache[ nSelect ], aContext );
}
sal_uInt16 ConverterCache::convertOne( int nSelect, sal_Unicode aChar )
{
ensureConverter( nSelect );
sal_Unicode aUCS2Char = aChar;
char aTempArray[8];
sal_Size nTempSize;
sal_uInt32 nCvtInfo;
// TODO: use direct unicode->mbcs converter should there ever be one
int nCodeLen = rtl_convertUnicodeToText(
maConverterCache[ nSelect ], maContexts[ nSelect ],
&aUCS2Char, 1, aTempArray, sizeof(aTempArray),
RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0
| RTL_UNICODETOTEXT_FLAGS_INVALID_0,
&nCvtInfo, &nTempSize );
sal_uInt16 aCode = aTempArray[0];
for( int i = 1; i < nCodeLen; ++i )
aCode = (aCode << 8) + (aTempArray[i] & 0xFF);
return aCode;
}
} // anonymous namespace
namespace vcl
{
static ConverterCache aCC;
sal_uInt16 TranslateChar12(sal_uInt16 src)
{
return aCC.convertOne( 2, src);
}
sal_uInt16 TranslateChar13(sal_uInt16 src)
{
return aCC.convertOne( 3, src);
}
sal_uInt16 TranslateChar14(sal_uInt16 src)
{
return aCC.convertOne( 4, src);
}
sal_uInt16 TranslateChar15(sal_uInt16 src)
{
return aCC.convertOne( 5, src);
}
sal_uInt16 TranslateChar16(sal_uInt16 src)
{
return aCC.convertOne( 6, src);
}
} // namespace vcl
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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