binaryoutputstream.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * This file incorporates work covered by the following license notice:
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#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 {
 
 
class BinaryOutputStream : public virtual BinaryStreamBase
{
public:
    virtual void        writeData( const StreamDataSequence& rData, size_t nAtomSize = 1 ) = 0;
 
    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 );
 
    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() : BinaryStreamBase( false ) {}
 
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 ) );
}
 
 
class OOX_DLLPUBLIC BinaryXOutputStream final : public BinaryXSeekableStream, public BinaryOutputStream
{
public:
    explicit            BinaryXOutputStream(
                            const css::uno::Reference< css::io::XOutputStream >& rxOutStrm,
                            bool bAutoClose );
 
    virtual             ~BinaryXOutputStream() override;
 
    void                close() override;
 
    virtual void        writeData( const StreamDataSequence& rData, size_t nAtomSize = 1 ) override;
 
    virtual void        writeMemory( const void* pMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
 
private:
    StreamDataSequence  maBuffer;       
    css::uno::Reference< css::io::XOutputStream >
                        mxOutStrm;      
    bool                mbAutoClose;    
};
 
 
class SequenceOutputStream final : public BinaryOutputStream
{
public:
    explicit            SequenceOutputStream( StreamDataSequence & rData );
 
    virtual void        writeData( const StreamDataSequence& rData, size_t nAtomSize = 1 ) override;
 
    virtual void        writeMemory( const void* pMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
 
    virtual sal_Int64   size() const override;
    virtual sal_Int64   tell() const override;
    virtual void        seek( sal_Int64 nPos ) override;
    virtual void        close() override;
 
private:
    StreamDataSequence* mpData;   
    sal_Int32           mnPos;          
};
 
 
} // namespace oox
 
#endif
 
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