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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 .
*/
#ifndef INCLUDED_OOX_HELPER_BINARYOUTPUTSTREAM_HXX
#define INCLUDED_OOX_HELPER_BINARYOUTPUTSTREAM_HXX
#include <cstddef>
#include <memory>
#include <com/sun/star/uno/Reference.hxx>
#include <oox/dllapi.h>
#include <oox/helper/binarystreambase.hxx>
#include <oox/helper/helper.hxx>
#include <rtl/textenc.h>
#include <rtl/ustring.hxx>
#include <sal/types.h>
namespace com::sun::star {
namespace io { class XOutputStream; }
}
namespace oox {
/** Interface for binary output stream classes.
The binary data in the stream is written in little-endian format.
*/
class BinaryOutputStream : public virtual BinaryStreamBase
{
public:
/** Derived classes implement writing the contents of the passed data
sequence.
@param nAtomSize
The size of the elements in the memory block, if available. Derived
classes may be interested in this information.
*/
virtual void writeData( const StreamDataSequence& rData, size_t nAtomSize = 1 ) = 0;
/** Derived classes implement writing the contents of the (preallocated!)
memory buffer pMem.
@param nAtomSize
The size of the elements in the memory block, if available. Derived
classes may be interested in this information.
*/
virtual void writeMemory( const void* pMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) = 0;
template< typename Type >
void writeArray( Type* opnArray, sal_Int32 nElemCount );
template< typename Type >
void writeArray( const Type* opnArray, sal_Int32 nElemCount );
/** Writes a value to the stream and converts it to platform byte order.
All data types supported by the ByteOrderConverter class can be used.
*/
template< typename Type >
void writeValue( Type nValue );
BinaryOutputStream& WriteInt16(sal_Int16 x) { writeValue(x); return *this; }
BinaryOutputStream& WriteUInt16(sal_uInt16 x) { writeValue(x); return *this; }
BinaryOutputStream& WriteInt32(sal_Int32 x) { writeValue(x); return *this; }
BinaryOutputStream& WriteUInt32(sal_uInt32 x) { writeValue(x); return *this; }
BinaryOutputStream& WriteInt64(sal_Int64 x) { writeValue(x); return *this; }
void writeCompressedUnicodeArray( const OUString& rString, bool bCompressed );
void writeCharArrayUC( std::u16string_view rString, rtl_TextEncoding eTextEnc );
void writeUnicodeArray( const OUString& rString );
protected:
BinaryOutputStream() = default;
private:
BinaryOutputStream( BinaryOutputStream const& ) = delete;
BinaryOutputStream& operator=( BinaryOutputStream const& ) = delete;
};
template< typename Type >
void BinaryOutputStream::writeArray( Type* opnArray, sal_Int32 nElemCount )
{
sal_Int32 nWriteSize = getLimitedValue< sal_Int32, sal_Int32 >( nElemCount, 0, SAL_MAX_INT32 / sizeof( Type ) ) * sizeof( Type );
ByteOrderConverter::convertLittleEndianArray( opnArray, static_cast< size_t >( nElemCount ) );
writeMemory( opnArray, nWriteSize, sizeof( Type ) );
}
template< typename Type >
void BinaryOutputStream::writeArray( const Type* opnArray, sal_Int32 nElemCount )
{
std::unique_ptr<Type[]> xArray(new Type[nElemCount]);
std::uninitialized_copy(opnArray, opnArray + nElemCount, xArray.get());
writeArray(xArray.get(), nElemCount);
}
template< typename Type >
void BinaryOutputStream::writeValue( Type nValue )
{
ByteOrderConverter::convertLittleEndian( nValue );
writeMemory( &nValue, static_cast< sal_Int32 >( sizeof( Type ) ), sizeof( Type ) );
}
/** Wraps a UNO output stream and provides convenient access functions.
The binary data in the stream is written in little-endian format.
*/
class OOX_DLLPUBLIC BinaryXOutputStream final : public BinaryXSeekableStream, public BinaryOutputStream
{
public:
/** Constructs the wrapper object for the passed output stream.
@param rxOutStream
The com.sun.star.io.XOutputStream interface of the output stream to
be wrapped.
@param bAutoClose
True = automatically close the wrapped output stream on destruction
of this wrapper or when close() is called.
*/
explicit BinaryXOutputStream(
const css::uno::Reference< css::io::XOutputStream >& rxOutStrm,
bool bAutoClose );
virtual ~BinaryXOutputStream() override;
/** Flushes and closes the output stream. Does also close the wrapped UNO
output stream if bAutoClose has been set to true in the constructor. */
void close() override;
/** Writes the passed data sequence. */
virtual void writeData( const StreamDataSequence& rData, size_t nAtomSize = 1 ) override;
/** Write nBytes bytes from the (preallocated!) buffer pMem. */
virtual void writeMemory( const void* pMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
private:
StreamDataSequence maBuffer; ///< Data buffer used in writeMemory() function.
css::uno::Reference< css::io::XOutputStream >
mxOutStrm; ///< Reference to the output stream.
bool mbAutoClose; ///< True = automatically close stream on destruction.
};
} // namespace oox
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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