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Diffstat (limited to 'vcl/source/fontsubset/xlat.cxx')
| -rw-r--r-- | vcl/source/fontsubset/xlat.cxx | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/vcl/source/fontsubset/xlat.cxx b/vcl/source/fontsubset/xlat.cxx new file mode 100644 index 000000000000..1df7a5a2fdde --- /dev/null +++ b/vcl/source/fontsubset/xlat.cxx @@ -0,0 +1,223 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#include "rtl/textcvt.h" +#include <tools/debug.hxx> + +namespace { // anonymous namespace + +// ==================================================================== + +#define MAX_CVT_SELECT 6 + +class ConverterCache +{ +public: + explicit ConverterCache( void ); + ~ConverterCache( void ); + sal_uInt16 convertOne( int nSelect, sal_Unicode ); + void convertStr( int nSelect, const sal_Unicode* pSrc, sal_uInt16* pDst, int nCount ); +protected: + void ensureConverter( int nSelect ); +private: + rtl_UnicodeToTextConverter maConverterCache[ MAX_CVT_SELECT+1 ]; + rtl_UnicodeToTextContext maContexts[ MAX_CVT_SELECT+1 ]; +}; + +// ==================================================================== + +ConverterCache::ConverterCache( void) +{ + for( int i = 0; i <= MAX_CVT_SELECT; ++i) + { + maConverterCache[i] = NULL; + maContexts[i] = NULL; + } +} + +// -------------------------------------------------------------------- + +ConverterCache::~ConverterCache( void) +{ + 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 ) +{ + // DBG_ASSERT( (2<=nSelect) && (nSelect<=MAX_CVT_SELECT)), "invalid XLAT.Converter requested" ); + rtl_UnicodeToTextContext aContext = maContexts[ nSelect ]; + if( !aContext ) + { + rtl_TextEncoding eRecodeFrom = RTL_TEXTENCODING_UNICODE; + switch( nSelect ) + { + default: nSelect = 1; // fall through 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; + sal_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; +} + +// -------------------------------------------------------------------- + +void ConverterCache::convertStr( int nSelect, const sal_Unicode* pSrc, sal_uInt16* pDst, int nCount ) +{ + ensureConverter( nSelect ); + + for( int n = 0; n < nCount; ++n ) + { + sal_Unicode aUCS2Char = pSrc[n]; + + sal_Char aTempArray[8]; + sal_Size nTempSize; + sal_uInt32 nCvtInfo; + + // assume that non-unicode-fonts do not support codepoints >U+FFFF + // 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); + pDst[n] = aCode; + } +} + +} // anonymous namespace + +// ==================================================================== + +#include "xlat.hxx" + +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); +} + +void TranslateString12(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) +{ + aCC.convertStr( 2, src, dst, n); +} + +void TranslateString13(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) +{ + aCC.convertStr( 3, src, dst, n); +} + +void TranslateString14(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) +{ + aCC.convertStr( 4, src, dst, n); +} + +void TranslateString15(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) +{ + aCC.convertStr( 5, src, dst, n); +} + +void TranslateString16(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) +{ + aCC.convertStr( 6, src, dst, n); +} + +} // namespace vcl + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |