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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/.
*/
#include <oox/ole/axbinarywriter.hxx>
namespace oox::ole {
namespace {
const sal_uInt32 AX_STRING_COMPRESSED = 0x80000000;
} // namespace
AxAlignedOutputStream::AxAlignedOutputStream( BinaryOutputStream& rOutStrm ) :
BinaryStreamBase( false ),
mpOutStrm( &rOutStrm ),
mnStrmPos( 0 ),
mnStrmSize( rOutStrm.getRemaining() ),
mnWrappedBeginPos( rOutStrm.tell() )
{
mbEof = mbEof || rOutStrm.isEof();
}
sal_Int64 AxAlignedOutputStream::size() const
{
return mpOutStrm ? mnStrmSize : -1;
}
sal_Int64 AxAlignedOutputStream::tell() const
{
return mpOutStrm ? mnStrmPos : -1;
}
void AxAlignedOutputStream::seek( sal_Int64 nPos )
{
mbEof = (nPos < 0);
if( !mbEof )
{
mpOutStrm->seek( static_cast< sal_Int32 >( mnWrappedBeginPos + nPos ) );
mnStrmPos = mpOutStrm->tell() - mnWrappedBeginPos;
}
}
void AxAlignedOutputStream::close()
{
mpOutStrm = nullptr;
mbEof = true;
}
void AxAlignedOutputStream::writeData( const StreamDataSequence& orData, size_t nAtomSize )
{
mpOutStrm->writeData( orData, nAtomSize );
mnStrmPos = mpOutStrm->tell() - mnWrappedBeginPos;
}
void AxAlignedOutputStream::writeMemory( const void* opMem, sal_Int32 nBytes, size_t nAtomSize )
{
mpOutStrm->writeMemory( opMem, nBytes, nAtomSize );
mnStrmPos = mpOutStrm->tell() - mnWrappedBeginPos;
}
void AxAlignedOutputStream::pad( sal_Int32 nBytes )
{
//PRESUMABLY we need to pad with 0's here as appropriate
css::uno::Sequence< sal_Int8 > aData( nBytes );
// ok we could be padding with rubbish here, but really that shouldn't matter
// set to 0(s), easier to not get fooled by 0's when looking at
// binary content...
memset( static_cast<void*>( aData.getArray() ), 0, nBytes );
mpOutStrm->writeData( aData );
mnStrmPos = mpOutStrm->tell() - mnWrappedBeginPos;
}
void AxAlignedOutputStream::align( size_t nSize )
{
pad( static_cast< sal_Int32 >( (nSize - (mnStrmPos % nSize)) % nSize ) );
}
namespace {
void lclWriteString( AxAlignedOutputStream& rOutStrm, OUString const & rValue, sal_uInt32 nSize )
{
bool bCompressed = getFlag( nSize, AX_STRING_COMPRESSED );
rOutStrm.writeCompressedUnicodeArray( rValue, bCompressed );
}
} // namespace
AxBinaryPropertyWriter::ComplexProperty::~ComplexProperty()
{
}
bool AxBinaryPropertyWriter::PairProperty::writeProperty( AxAlignedOutputStream& rOutStrm )
{
rOutStrm.WriteInt32(mrPairData.first).WriteInt32(mrPairData.second);
return true;
}
bool AxBinaryPropertyWriter::StringProperty::writeProperty( AxAlignedOutputStream& rOutStrm )
{
lclWriteString( rOutStrm, mrValue, mnSize );
return true;
}
AxBinaryPropertyWriter::AxBinaryPropertyWriter( BinaryOutputStream& rOutStrm, bool b64BitPropFlags ) :
maOutStrm( rOutStrm ),
mnPropFlags( 0x0 ),
mbValid( true ),
mb64BitPropFlags( b64BitPropFlags )
{
sal_uInt16 nId( 0x0200 );
maOutStrm.WriteUInt16(nId);
mnBlockSize = 0; // will be filled in the finalize method
maOutStrm.WriteUInt16(nId);
mnPropFlagsStart = maOutStrm.tell();
if( mb64BitPropFlags )
maOutStrm.WriteInt64( mnPropFlags );
else
maOutStrm.WriteUInt32( mnPropFlags );
mnNextProp = 1;
}
void AxBinaryPropertyWriter::writeBoolProperty( bool orbValue )
{
// orbValue == bReverse false then we want to set the bit, e.g. don't skip
startNextProperty( !orbValue );
}
void AxBinaryPropertyWriter::writePairProperty( AxPairData& orPairData )
{
startNextProperty();
maLargeProps.push_back( ComplexPropVector::value_type( std::make_shared<PairProperty>( orPairData ) ) );
}
void AxBinaryPropertyWriter::writeStringProperty( OUString& orValue )
{
sal_uInt32 nSize = orValue.getLength() * 2;
setFlag( nSize, AX_STRING_COMPRESSED, false );
maOutStrm.writeAligned< sal_uInt32 >( nSize );
maLargeProps.push_back( ComplexPropVector::value_type( std::make_shared<StringProperty>( orValue, nSize ) ) );
startNextProperty();
}
void AxBinaryPropertyWriter::finalizeExport()
{
// write large properties
maOutStrm.align( 4 );
for (auto const& largeProp : maLargeProps)
{
if (!ensureValid())
break;
largeProp->writeProperty( maOutStrm );
maOutStrm.align( 4 );
}
mnBlockSize = maOutStrm.tell() - mnPropFlagsStart;
// write stream properties (no stream alignment between properties!)
for (auto const& streamProp : maStreamProps)
{
if (!ensureValid())
break;
streamProp->writeProperty( maOutStrm );
}
sal_Int64 nPos = maOutStrm.tell();
maOutStrm.seek( mnPropFlagsStart - sizeof( mnBlockSize ) );
maOutStrm.WriteInt16( mnBlockSize );
if( mb64BitPropFlags )
maOutStrm.WriteInt64( mnPropFlags );
else
maOutStrm.WriteUInt32( mnPropFlags );
maOutStrm.seek( nPos );
}
bool AxBinaryPropertyWriter::ensureValid()
{
mbValid = mbValid && !maOutStrm.isEof();
return mbValid;
}
void AxBinaryPropertyWriter::startNextProperty( bool bSkip )
{
// if we are skipping then we clear the flag
setFlag( mnPropFlags, mnNextProp, !bSkip );
mnNextProp <<= 1;
}
} // namespace oox::ole
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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