/* -*- 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 <o3tl/safeint.hxx>
#include <osl/diagnose.h>
#include <com/sun/star/beans/PropertyValue.hpp>
using namespace com::sun::star;
namespace pdfi
{
namespace
{
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_Int32 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()
{}
ImageId ImageContainer::addImage(
const uno::Sequence<beans::PropertyValue>& xBitm
ap )
{
m_aImages.push_back( xBitmap );
return m_aImages.size()-1;
}
void ImageContainer::writeBase64EncodedStream( ImageId nId, EmitContext& rContext )
{
OSL_ASSERT( nId >= 0 && o3tl::make_unsigned(nId) < 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() ));
}
OUString ImageContainer::asBase64EncodedString( ImageId nId ) const
{
OSL_ASSERT( nId >= 0 && o3tl::make_unsigned(nId) < 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 u"" _ustr;
}
uno::Sequence<sal_Int8> aData;
if ( !(pValue->Value >>= aData) )
{
SAL_WARN("sdext.pdfimport" , "Wrong data type" );
return u"" _ustr;
}
return encodeBase64( aData.getConstArray(), aData.getLength() );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Messung V0.5 C=97 H=97 G=96
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