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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/.
+ */
+
+#ifndef INCLUDED_OOX_OLE_AXBINARYWRITER_HXX
+#define INCLUDED_OOX_OLE_AXBINARYWRITER_HXX
+
+#include <cstddef>
+#include <utility>
+
+#include <oox/helper/binaryoutputstream.hxx>
+#include <oox/helper/binarystreambase.hxx>
+#include <oox/helper/refvector.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+
+namespace oox::ole {
+
+
+/** A wrapper for a binary output stream that supports aligned write operations.
+
+ The implementation does support seeking back the wrapped stream. All
+ seeking operations (tell, seekTo, align) are performed relative to the
+ position of the wrapped stream at construction time of this wrapper.
+ Unlike it's reader class counterpart it is NOT possible to construct this
+ wrapper with an unseekable output stream.
+ */
+class AxAlignedOutputStream final : public BinaryOutputStream
+{
+public:
+ explicit AxAlignedOutputStream( BinaryOutputStream& rOutStrm );
+
+ /** Returns the size of the data this stream represents, if the wrapped
+ stream supports the size() operation. */
+ virtual sal_Int64 size() const override;
+ /** Return the current relative stream position (relative to position of
+ the wrapped stream at construction time). */
+ virtual sal_Int64 tell() const override;
+ /** Seeks the stream to the passed relative position, if it is behind the
+ current position. */
+ virtual void seek( sal_Int64 nPos ) override;
+ /** Closes the input stream but not the wrapped stream. */
+ virtual void close() override;
+
+ /** Reads nBytes bytes to the passed sequence.
+ @return Number of bytes really read. */
+ virtual void writeData( const StreamDataSequence& orData, size_t nAtomSize = 1 ) override;
+ /** Reads nBytes bytes to the (existing) buffer opMem.
+ @return Number of bytes really read. */
+ virtual void writeMemory( const void* pMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
+
+ /** Aligns the stream to a multiple of the passed size (relative to the
+ position of the wrapped stream at construction time). */
+ void align( size_t nSize );
+
+ void pad( sal_Int32 nBytes );
+
+ /** Aligns the stream according to the passed type and reads a value. */
+ template< typename Type >
+ void writeAligned( Type nVal ) { align( sizeof( Type ) ); writeValue( nVal ); }
+
+private:
+ BinaryOutputStream* mpOutStrm; ///< The wrapped input stream.
+ sal_Int64 mnStrmPos; ///< Tracks relative position in the stream.
+ sal_Int64 mnStrmSize; ///< Size of the wrapped stream data.
+ sal_Int64 mnWrappedBeginPos; ///< starting pos or wrapped stream
+};
+
+/** A pair of integer values as a property. */
+typedef ::std::pair< sal_Int32, sal_Int32 > AxPairData;
+
+/** Export helper to write simple and complex ActiveX form control properties
+ to a binary input stream. */
+class AxBinaryPropertyWriter
+{
+public:
+ explicit AxBinaryPropertyWriter( BinaryOutputStream& rOutStrm, bool b64BitPropFlags = false );
+
+ /** Write an integer property value to the stream, the
+ respective flag in the property mask is set. */
+ template< typename StreamType, typename DataType >
+ void writeIntProperty( DataType ornValue )
+ { startNextProperty(); maOutStrm.writeAligned< StreamType >( ornValue ); }
+ /** Write a boolean property value to the stream, the
+ respective flag in the property mask is set. */
+ void writeBoolProperty( bool orbValue );
+ /** Write a pair property the stream, the respective flag in
+ the property mask is set. */
+ void writePairProperty( AxPairData& orPairData );
+ /** Write a string property to the stream, the respective flag
+ in the property mask is set. */
+ void writeStringProperty( OUString& orValue );
+
+ /** Skips the next property clears the respective
+ flag in the property mask. */
+ void skipProperty() { startNextProperty( true ); }
+
+ /** Final processing, write contents of all complex properties, writes record size */
+ void finalizeExport();
+
+private:
+ bool ensureValid();
+ void startNextProperty( bool bSkip = false );
+
+private:
+ /** Base class for complex properties such as string, point, size, GUID, picture. */
+ struct ComplexProperty
+ {
+ virtual ~ComplexProperty();
+ virtual bool writeProperty( AxAlignedOutputStream& rOutStrm ) = 0;
+ };
+
+ /** Complex property for a 32-bit value pair, e.g. point or size. */
+ struct PairProperty final : public ComplexProperty
+ {
+ private:
+ AxPairData& mrPairData;
+
+ public:
+ explicit PairProperty( AxPairData& rPairData ) :
+ mrPairData( rPairData ) {}
+ virtual bool writeProperty( AxAlignedOutputStream& rOutStrm ) override;
+ };
+
+ /** Complex property for a string value. */
+ struct StringProperty final : public ComplexProperty
+ {
+ private:
+ OUString& mrValue;
+ sal_uInt32 mnSize;
+ public:
+ explicit StringProperty( OUString& rValue, sal_uInt32 nSize ) :
+ mrValue( rValue ), mnSize( nSize ) {}
+ virtual bool writeProperty( AxAlignedOutputStream& rOutStrm ) override;
+ };
+
+ /** Stream property for a picture or mouse icon. */
+ struct PictureProperty final : public ComplexProperty
+ {
+ virtual bool writeProperty( AxAlignedOutputStream& rOutStrm ) override;
+ };
+
+ typedef RefVector< ComplexProperty > ComplexPropVector;
+
+private:
+ AxAlignedOutputStream maOutStrm; ///< The input stream to read from.
+ ComplexPropVector maLargeProps; ///< Stores info for all used large properties.
+ ComplexPropVector maStreamProps; ///< Stores info for all used stream data properties.
+ sal_Int16 mnBlockSize;
+ sal_Int64 mnPropFlagsStart; ///< pos of Prop flags
+ sal_Int64 mnPropFlags; ///< Flags specifying existing properties.
+ sal_Int64 mnNextProp; ///< Next property to read.
+ bool mbValid; ///< True = stream still valid.
+ bool mb64BitPropFlags;
+};
+
+
+} // namespace oox::ole
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */