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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 <com/sun/star/io/BufferSizeExceededException.hpp>
#include <com/sun/star/io/IOException.hpp>
#include <com/sun/star/io/NotConnectedException.hpp>
#include <o3tl/safeint.hxx>
#include <unotools/streamhelper.hxx>
namespace utl
{
sal_Int32 SAL_CALL OInputStreamHelper::readBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead)
{
if (!m_xLockBytes.is())
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
if (nBytesToRead < 0)
throw css::io::BufferSizeExceededException(OUString(), static_cast<css::uno::XWeak*>(this));
::osl::MutexGuard aGuard( m_aMutex );
if (aData.getLength() < nBytesToRead)
aData.realloc(nBytesToRead);
std::size_t nRead(0);
ErrCode nError = m_xLockBytes->ReadAt(m_nActPos, static_cast<void*>(aData.getArray()), nBytesToRead, &nRead);
m_nActPos += nRead;
if (nError != ERRCODE_NONE)
throw css::io::IOException(OUString(), static_cast<css::uno::XWeak*>(this));
// adjust sequence if data read is lower than the desired data
if (nRead < o3tl::make_unsigned(aData.getLength()))
aData.realloc( nRead );
return nRead;
}
void SAL_CALL OInputStreamHelper::seek( sal_Int64 location )
{
::osl::MutexGuard aGuard( m_aMutex );
m_nActPos = location;
}
sal_Int64 SAL_CALL OInputStreamHelper::getPosition( )
{
return m_nActPos;
}
sal_Int64 SAL_CALL OInputStreamHelper::getLength( )
{
if (!m_xLockBytes.is())
return 0;
::osl::MutexGuard aGuard( m_aMutex );
SvLockBytesStat aStat;
m_xLockBytes->Stat( &aStat );
return aStat.nSize;
}
sal_Int32 SAL_CALL OInputStreamHelper::readSomeBytes(css::uno::Sequence< sal_Int8 >& aData,
sal_Int32 nMaxBytesToRead)
{
// read all data desired
return readBytes(aData, nMaxBytesToRead);
}
void SAL_CALL OInputStreamHelper::skipBytes(sal_Int32 nBytesToSkip)
{
::osl::MutexGuard aGuard( m_aMutex );
if (!m_xLockBytes.is())
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
if (nBytesToSkip < 0)
throw css::io::BufferSizeExceededException(OUString(), static_cast<css::uno::XWeak*>(this));
m_nActPos += nBytesToSkip;
}
sal_Int32 SAL_CALL OInputStreamHelper::available()
{
::osl::MutexGuard aGuard( m_aMutex );
if (!m_xLockBytes.is())
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
return m_nAvailable;
}
void SAL_CALL OInputStreamHelper::closeInput()
{
::osl::MutexGuard aGuard( m_aMutex );
if (!m_xLockBytes.is())
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
m_xLockBytes = nullptr;
}
} // namespace utl
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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