1 files changed, 201 insertions, 0 deletions
diff --git a/oox/source/ole/axbinarywriter.cxx b/oox/source/ole/axbinarywriter.cxx
new file mode 100644
index 0000000000..b9c4b66bec
--- /dev/null
+++ b/oox/source/ole/axbinarywriter.cxx
@@ -0,0 +1,201 @@
+/* -*- 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: */