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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_STREAMHELPER_HXX
#define INCLUDED_UNOTOOLS_STREAMHELPER_HXX
#include <unotools/unotoolsdllapi.h>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <cppuhelper/implbase.hxx>
#include <tools/stream.hxx>
#include <mutex>
#include <utility>
namespace utl
{
/**
* The helper implementation for a using input streams based on SvLockBytes.
*/
class UNOTOOLS_DLLPUBLIC OInputStreamHelper final : public cppu::WeakImplHelper<css::io::XInputStream, css::io::XSeekable>
{
std::mutex m_aMutex;
SvLockBytesRef m_xLockBytes;
sal_uInt64 m_nActPos;
sal_Int32 m_nAvailable; // this is typically the chunk(buffer) size
public:
OInputStreamHelper(SvLockBytesRef _xLockBytes,
sal_uInt32 _nAvailable)
:m_xLockBytes(std::move(_xLockBytes))
,m_nActPos(0)
,m_nAvailable(_nAvailable){}
// 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;
virtual void SAL_CALL seek( sal_Int64 location ) override;
virtual sal_Int64 SAL_CALL getPosition( ) override;
virtual sal_Int64 SAL_CALL getLength( ) override;
// workaround for Ubuntu 18.04 / Fedora 31 (Coverity VM) build with std::mutex; must not be inline!
virtual void SAL_CALL acquire() SAL_NOEXCEPT override;
};
} // namespace utl
#endif // _UNOTOOLS_STREAM_WRAPPER_HXX_
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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