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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 .
*/
#include <sal/config.h>
#include <sal/log.hxx>
#include <com/sun/star/io/IOException.hpp>
#include <utility>
#include <osl/diagnose.h>
#include "wrapstreamforshare.hxx"
using namespace ::com::sun::star;
#if OSL_DEBUG_LEVEL > 0
#define THROW_WHERE SAL_WHERE
#else
#define THROW_WHERE ""
#endif
WrapStreamForShare::WrapStreamForShare( uno::Reference< io::XInputStream > xInStream,
rtl::Reference< comphelper::RefCountedMutex > xMutexRef )
: m_xMutex(std::move( xMutexRef ))
, m_xInStream(std::move( xInStream ))
, m_nCurPos( 0 )
{
if ( !m_xMutex.is() || !m_xInStream.is() )
{
OSL_FAIL( "Wrong initialization of wrapping stream!" );
throw uno::RuntimeException(THROW_WHERE );
}
m_xSeekable.set( m_xInStream, uno::UNO_QUERY_THROW );
mpByteReader = dynamic_cast<comphelper::ByteReader*>(m_xInStream.get());
assert(mpByteReader);
}
WrapStreamForShare::~WrapStreamForShare()
{
}
// XInputStream
sal_Int32 SAL_CALL WrapStreamForShare::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
{
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
m_xSeekable->seek( m_nCurPos );
sal_Int32 nRead = m_xInStream->readBytes( aData, nBytesToRead );
m_nCurPos += nRead;
return nRead;
}
sal_Int32 SAL_CALL WrapStreamForShare::readSomeBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
{
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
m_xSeekable->seek( m_nCurPos );
sal_Int32 nRead = m_xInStream->readSomeBytes( aData, nMaxBytesToRead );
m_nCurPos += nRead;
return nRead;
}
sal_Int32 WrapStreamForShare::readSomeBytes( sal_Int8* aData, sal_Int32 nMaxBytesToRead )
{
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
m_xSeekable->seek( m_nCurPos );
sal_Int32 nRead = mpByteReader->readSomeBytes( aData, nMaxBytesToRead );
m_nCurPos += nRead;
return nRead;
}
void SAL_CALL WrapStreamForShare::skipBytes( sal_Int32 nBytesToSkip )
{
::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
m_xSeekable->seek( m_nCurPos );
m_xInStream->skipBytes( nBytesToSkip );
m_nCurPos = m_xSeekable->getPosition();
}
sal_Int32 SAL_CALL WrapStreamForShare::available()
{
::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
return m_xInStream->available();
}
void SAL_CALL WrapStreamForShare::closeInput()
{
::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
// the package is the owner so it will close the stream
// m_xInStream->closeInput();
m_xInStream.clear();
m_xSeekable.clear();
mpByteReader = nullptr;
}
// XSeekable
void SAL_CALL WrapStreamForShare::seek( sal_Int64 location )
{
::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
// let stream implementation do all the checking
m_xSeekable->seek( location );
m_nCurPos = m_xSeekable->getPosition();
}
sal_Int64 SAL_CALL WrapStreamForShare::getPosition()
{
::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
return m_nCurPos;
}
sal_Int64 SAL_CALL WrapStreamForShare::getLength()
{
::osl::MutexGuard aGuard( m_xMutex->GetMutex() );
if ( !m_xInStream.is() )
throw io::IOException(THROW_WHERE );
return m_xSeekable->getLength();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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