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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 "imagecontainer.hxx"
#include "genericelements.hxx"
#include "xmlemitter.hxx"
#include <rtl/ustrbuf.hxx>
#include <osl/diagnose.h>
#include <osl/file.h>
#include <rtl/crc.h>
#include <com/sun/star/graphic/XGraphicProvider.hpp>
#include <com/sun/star/beans/PropertyValue.hpp>
using namespace com::sun::star;
namespace pdfi
{
namespace
{
static const sal_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 = (((sal_uInt8)i_pBuffer[i + 0]) << 16) +
(((sal_uInt8)i_pBuffer[i + 1]) << 8) +
((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 = ((sal_uInt8)i_pBuffer[nStart + 0]) << 16;
break;
case 2: nBinary = (((sal_uInt8)i_pBuffer[nStart + 0]) << 16) +
(((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 )
{
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: */
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