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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_UNOTOOLS_STREAMWRAP_HXX
#define INCLUDED_UNOTOOLS_STREAMWRAP_HXX
#include <unotools/unotoolsdllapi.h>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <com/sun/star/io/XTruncate.hpp>
#include <com/sun/star/io/XStream.hpp>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/implbase1.hxx>
#include <memory>
#include <mutex>
class SvStream;
namespace utl
{
// workaround for incremental linking bugs in MSVC2015
class SAL_DLLPUBLIC_TEMPLATE OInputStreamWrapper_Base : public cppu::WeakImplHelper< css::io::XInputStream > {};
/// helper class for wrapping an SvStream into a com.sun.star.io::XInputStream
class UNOTOOLS_DLLPUBLIC OInputStreamWrapper : public OInputStreamWrapper_Base
{
protected:
std::mutex m_aMutex;
SvStream* m_pSvStream;
bool m_bSvStreamOwner : 1;
OInputStreamWrapper()
{ m_pSvStream = nullptr; m_bSvStreamOwner = false; }
void SetStream(SvStream* _pStream, bool bOwner )
{ m_pSvStream = _pStream; m_bSvStreamOwner = bOwner; }
public:
OInputStreamWrapper(SvStream& _rStream);
OInputStreamWrapper(SvStream* pStream, bool bOwner=false);
OInputStreamWrapper(std::unique_ptr<SvStream> pStream);
virtual ~OInputStreamWrapper() override;
// css::io::XInputStream
virtual sal_Int32 SAL_CALL readBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead) override;
virtual sal_Int32 SAL_CALL readSomeBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead) override;
virtual void SAL_CALL skipBytes(sal_Int32 nBytesToSkip) override;
virtual sal_Int32 SAL_CALL available() override;
virtual void SAL_CALL closeInput() override;
protected:
/// throws a NotConnectedException if the object is not connected anymore
void checkConnected() const;
/// throws an exception according to the error flag of m_pSvStream
void checkError() const;
};
//= OSeekableInputStreamWrapper
/** helper class for wrapping an SvStream into a com.sun.star.io::XInputStream
which is seekable (i.e. supports the com.sun.star.io::XSeekable interface).
*/
class UNOTOOLS_DLLPUBLIC OSeekableInputStreamWrapper
: public cppu::ImplInheritanceHelper< OInputStreamWrapper, css::io::XSeekable >
{
protected:
OSeekableInputStreamWrapper() {}
~OSeekableInputStreamWrapper() override;
public:
OSeekableInputStreamWrapper(SvStream& _rStream);
OSeekableInputStreamWrapper(SvStream* _pStream, bool _bOwner = false);
// XSeekable
virtual void SAL_CALL seek( sal_Int64 _nLocation ) override;
virtual sal_Int64 SAL_CALL getPosition( ) override;
virtual sal_Int64 SAL_CALL getLength( ) override;
};
//= OOutputStreamWrapper
class OOutputStreamWrapper : public cppu::WeakImplHelper<css::io::XOutputStream>
{
public:
UNOTOOLS_DLLPUBLIC OOutputStreamWrapper(SvStream& _rStream);
protected:
virtual ~OOutputStreamWrapper() override;
// css::io::XOutputStream
virtual void SAL_CALL writeBytes(const css::uno::Sequence< sal_Int8 >& aData) override;
virtual void SAL_CALL flush() override;
virtual void SAL_CALL closeOutput() override;
/// throws an exception according to the error flag of m_pSvStream
void checkError() const;
// TODO: thread safety!
SvStream& rStream;
};
//= OSeekableOutputStreamWrapper
typedef ::cppu::ImplHelper1 < css::io::XSeekable
> OSeekableOutputStreamWrapper_Base;
/** helper class for wrapping an SvStream into a com.sun.star.io::XOutputStream
which is seekable (i.e. supports the com.sun.star.io::XSeekable interface).
*/
class UNOTOOLS_DLLPUBLIC OSeekableOutputStreamWrapper final
:public OOutputStreamWrapper
,public OSeekableOutputStreamWrapper_Base
{
public:
OSeekableOutputStreamWrapper(SvStream& _rStream);
private:
virtual ~OSeekableOutputStreamWrapper() override;
// disambiguate XInterface
virtual css::uno::Any SAL_CALL queryInterface( const css::uno::Type& _rType ) override;
virtual void SAL_CALL acquire( ) noexcept override
{ OOutputStreamWrapper::acquire(); }
virtual void SAL_CALL release( ) noexcept override
{ OOutputStreamWrapper::release(); }
// XSeekable
virtual void SAL_CALL seek( sal_Int64 _nLocation ) override;
virtual sal_Int64 SAL_CALL getPosition( ) override;
virtual sal_Int64 SAL_CALL getLength( ) override;
};
class UNOTOOLS_DLLPUBLIC OStreamWrapper final
: public cppu::ImplInheritanceHelper<OSeekableInputStreamWrapper,
css::io::XStream,
css::io::XOutputStream,
css::io::XTruncate>
{
~OStreamWrapper() override;
public:
OStreamWrapper(SvStream& _rStream);
OStreamWrapper(std::unique_ptr<SvStream> _rStream);
// css::io::XStream
virtual css::uno::Reference< css::io::XInputStream > SAL_CALL getInputStream( ) override;
virtual css::uno::Reference< css::io::XOutputStream > SAL_CALL getOutputStream( ) override;
// css::io::XOutputStream
virtual void SAL_CALL writeBytes(const css::uno::Sequence< sal_Int8 >& aData) override;
virtual void SAL_CALL flush() override;
virtual void SAL_CALL closeOutput() override;
virtual void SAL_CALL truncate() override;
};
}
// namespace utl
#endif // INCLUDED_UNOTOOLS_STREAMWRAP_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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