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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
commit | 940b4d1848e8c70ab7642901a68594e8016caffc (patch) | |
tree | eb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /sdext/source/pdfimport/tree/imagecontainer.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.zip |
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | sdext/source/pdfimport/tree/imagecontainer.cxx | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/sdext/source/pdfimport/tree/imagecontainer.cxx b/sdext/source/pdfimport/tree/imagecontainer.cxx new file mode 100644 index 000000000..2be33dced --- /dev/null +++ b/sdext/source/pdfimport/tree/imagecontainer.cxx @@ -0,0 +1,146 @@ +/* -*- 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 <imagecontainer.hxx> +#include <genericelements.hxx> +#include <xmlemitter.hxx> + +#include <rtl/ustrbuf.hxx> +#include <sal/log.hxx> +#include <osl/diagnose.h> + +#include <com/sun/star/beans/PropertyValue.hpp> + +using namespace com::sun::star; + +namespace pdfi +{ + +namespace +{ + +static const char aBase64EncodeTable[] = + { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', + 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', + 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', + 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' }; + +OUString encodeBase64( const sal_Int8* i_pBuffer, const sal_uInt32 i_nBufferLength ) +{ + OUStringBuffer aBuf( (i_nBufferLength+1) * 4 / 3 ); + const sal_Int32 nRemain(i_nBufferLength%3); + const sal_Int32 nFullTripleLength( i_nBufferLength - (i_nBufferLength%3)); + sal_Int32 nBufPos( 0 ); + for( sal_Int32 i = 0; i < nFullTripleLength; i += 3, nBufPos += 4 ) + { + const sal_Int32 nBinary = (static_cast<sal_uInt8>(i_pBuffer[i + 0]) << 16) + + (static_cast<sal_uInt8>(i_pBuffer[i + 1]) << 8) + + static_cast<sal_uInt8>(i_pBuffer[i + 2]); + + aBuf.append("===="); + + sal_uInt8 nIndex (static_cast<sal_uInt8>((nBinary & 0xFC0000) >> 18)); + aBuf[nBufPos] = aBase64EncodeTable [nIndex]; + + nIndex = static_cast<sal_uInt8>((nBinary & 0x3F000) >> 12); + aBuf[nBufPos+1] = aBase64EncodeTable [nIndex]; + + nIndex = static_cast<sal_uInt8>((nBinary & 0xFC0) >> 6); + aBuf[nBufPos+2] = aBase64EncodeTable [nIndex]; + + nIndex = static_cast<sal_uInt8>((nBinary & 0x3F)); + aBuf[nBufPos+3] = aBase64EncodeTable [nIndex]; + } + if( nRemain > 0 ) + { + aBuf.append("===="); + sal_Int32 nBinary( 0 ); + const sal_Int32 nStart(i_nBufferLength-nRemain); + switch(nRemain) + { + case 1: nBinary = static_cast<sal_uInt8>(i_pBuffer[nStart + 0]) << 16; + break; + case 2: nBinary = (static_cast<sal_uInt8>(i_pBuffer[nStart + 0]) << 16) + + (static_cast<sal_uInt8>(i_pBuffer[nStart + 1]) << 8); + break; + } + sal_uInt8 nIndex (static_cast<sal_uInt8>((nBinary & 0xFC0000) >> 18)); + aBuf[nBufPos] = aBase64EncodeTable [nIndex]; + + nIndex = static_cast<sal_uInt8>((nBinary & 0x3F000) >> 12); + aBuf[nBufPos+1] = aBase64EncodeTable [nIndex]; + + if( nRemain == 2 ) + { + nIndex = static_cast<sal_uInt8>((nBinary & 0xFC0) >> 6); + aBuf[nBufPos+2] = aBase64EncodeTable [nIndex]; + } + } + + return aBuf.makeStringAndClear(); +} + +} // namespace + +ImageContainer::ImageContainer() : + m_aImages() +{} + +ImageId ImageContainer::addImage( const uno::Sequence<beans::PropertyValue>& xBitmap ) +{ + m_aImages.push_back( xBitmap ); + return m_aImages.size()-1; +} + +void ImageContainer::writeBase64EncodedStream( ImageId nId, EmitContext& rContext ) +{ + OSL_ASSERT( nId >= 0 && nId < ImageId( m_aImages.size()) ); + + const uno::Sequence<beans::PropertyValue>& rEntry( m_aImages[nId] ); + + // find "InputSequence" property + const beans::PropertyValue* pAry(rEntry.getConstArray()); + const sal_Int32 nLen(rEntry.getLength()); + const beans::PropertyValue* pValue( + std::find_if(pAry, pAry+nLen, + [] (beans::PropertyValue const& v) -> bool { + return v.Name == "InputSequence"; + })); + + if (pValue == pAry + nLen ) + { + SAL_WARN("sdext.pdfimport", "InputSequence not found"); + return; + } + + uno::Sequence<sal_Int8> aData; + if( !(pValue->Value >>= aData) ) + { + SAL_WARN("sdext.pdfimport", "Wrong data type"); + return; + } + + rContext.rEmitter.write( encodeBase64( aData.getConstArray(), aData.getLength() )); +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |