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