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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /vcl/source/fontsubset/xlat.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | vcl/source/fontsubset/xlat.cxx | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/vcl/source/fontsubset/xlat.cxx b/vcl/source/fontsubset/xlat.cxx new file mode 100644 index 000000000..b7966f279 --- /dev/null +++ b/vcl/source/fontsubset/xlat.cxx @@ -0,0 +1,144 @@ +/* -*- 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: */ |