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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/NotConnectedException.hpp>
#include <comphelper/oslfile2streamwrap.hxx>
#include <o3tl/safeint.hxx>
#include <osl/file.hxx>
#include <algorithm>
namespace comphelper
{
using namespace osl;
OSLInputStreamWrapper::OSLInputStreamWrapper( File& _rFile )
: m_pFile(&_rFile)
{
}
OSLInputStreamWrapper::~OSLInputStreamWrapper()
{
}
sal_Int32 SAL_CALL OSLInputStreamWrapper::readBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead)
{
if (!m_pFile)
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));
aData.realloc(nBytesToRead);
std::scoped_lock aGuard( m_aMutex );
sal_uInt64 nRead = 0;
FileBase::RC eError = m_pFile->read(static_cast<void*>(aData.getArray()), nBytesToRead, nRead);
if (eError != FileBase::E_None)
throw css::io::BufferSizeExceededException(OUString(),static_cast<css::uno::XWeak*>(this));
// If the read character < MaxLength, adjust css::uno::Sequence
if (nRead < o3tl::make_unsigned(nBytesToRead))
aData.realloc( sal::static_int_cast< sal_Int32 >(nRead) );
return sal::static_int_cast< sal_Int32 >(nRead);
}
sal_Int32 SAL_CALL OSLInputStreamWrapper::readSomeBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead)
{
if (!m_pFile)
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
if (nMaxBytesToRead < 0)
throw css::io::BufferSizeExceededException(OUString(),static_cast<css::uno::XWeak*>(this));
return readBytes(aData, nMaxBytesToRead);
}
void SAL_CALL OSLInputStreamWrapper::skipBytes(sal_Int32 nBytesToSkip)
{
std::scoped_lock aGuard( m_aMutex );
if (!m_pFile)
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
sal_uInt64 nCurrentPos;
FileBase::RC eError = m_pFile->getPos(nCurrentPos);
if (eError != FileBase::E_None)
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
sal_uInt64 nNewPos = nCurrentPos + nBytesToSkip;
eError = m_pFile->setPos(osl_Pos_Absolut, nNewPos);
if (eError != FileBase::E_None)
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
}
sal_Int32 SAL_CALL OSLInputStreamWrapper::available()
{
std::scoped_lock aGuard( m_aMutex );
if (!m_pFile)
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
sal_uInt64 nPos;
FileBase::RC eError = m_pFile->getPos(nPos);
if (eError != FileBase::E_None)
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
eError = m_pFile->setPos(osl_Pos_End, 0);
if (eError != FileBase::E_None)
throw css::io::NotConnectedException(OUString(),static_cast<css::uno::XWeak*>(this));
sal_uInt64 nAvailable;
eError = m_pFile->getPos(nAvailable);
if (eError != FileBase::E_None)
throw css::io::NotConnectedException(OUString(),static_cast<css::uno::XWeak*>(this));
nAvailable = nAvailable - nPos;
eError = m_pFile->setPos(osl_Pos_Absolut, nPos);
if (eError != FileBase::E_None)
throw css::io::NotConnectedException(OUString(),static_cast<css::uno::XWeak*>(this));
return std::min<sal_Int64>(nAvailable, SAL_MAX_INT32);
}
void SAL_CALL OSLInputStreamWrapper::closeInput()
{
if (!m_pFile)
throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
m_pFile->close();
m_pFile = nullptr;
}
/*************************************************************************/
// css::io::XOutputStream
OSLOutputStreamWrapper::OSLOutputStreamWrapper(osl::File & _rFile):
rFile(_rFile)
{}
OSLOutputStreamWrapper::~OSLOutputStreamWrapper() {}
void SAL_CALL OSLOutputStreamWrapper::writeBytes(const css::uno::Sequence< sal_Int8 >& aData)
{
sal_uInt64 nWritten;
FileBase::RC eError = rFile.write(aData.getConstArray(),aData.getLength(), nWritten);
if (eError != FileBase::E_None
|| nWritten != sal::static_int_cast< sal_uInt32 >(aData.getLength()))
{
throw css::io::BufferSizeExceededException(OUString(),static_cast<css::uno::XWeak*>(this));
}
}
void SAL_CALL OSLOutputStreamWrapper::flush()
{
}
void SAL_CALL OSLOutputStreamWrapper::closeOutput()
{
rFile.close();
}
} // namespace comphelper
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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