/* -*- 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/lang/IllegalArgumentException.hpp>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <osl/diagnose.h>
#include "filstr.hxx"
#include "filerror.hxx"
using namespace fileaccess;
using namespace com::sun::star;
#if OSL_DEBUG_LEVEL > 0
#define THROW_WHERE SAL_WHERE
#else
#define THROW_WHERE ""
#endif
/******************************************************************************/
/* */
/* XStream_impl implementation */
/* */
/******************************************************************************/
XStream_impl::XStream_impl( const OUString& aUncPath, bool bLock )
: m_bInputStreamCalled( false ),
m_bOutputStreamCalled( false ),
m_aFile( aUncPath ),
m_nErrorCode( TaskHandlerErr::NO_ERROR ),
m_nMinorErrorCode( 0 )
{
sal_uInt32 nFlags = ( osl_File_OpenFlag_Read | osl_File_OpenFlag_Write );
if ( !bLock )
nFlags |= osl_File_OpenFlag_NoLock;
osl::FileBase::RC err = m_aFile.open( nFlags );
if( err != osl::FileBase::E_None )
{
m_nIsOpen = false;
m_aFile.close();
m_nErrorCode = TaskHandlerErr::OPEN_FOR_STREAM;
m_nMinorErrorCode = err;
}
else
m_nIsOpen = true;
}
XStream_impl::~XStream_impl()
{
try
{
closeStream();
}
catch (const io::IOException&)
{
OSL_FAIL("unexpected situation");
}
catch (const uno::RuntimeException&)
{
OSL_FAIL("unexpected situation");
}
}
uno::Reference< io::XInputStream > SAL_CALL
XStream_impl::getInputStream( )
{
{
std::scoped_lock aGuard( m_aMutex );
m_bInputStreamCalled = true;
}
return uno::Reference< io::XInputStream >( this );
}
uno::Reference< io::XOutputStream > SAL_CALL
XStream_impl::getOutputStream( )
{
{
std::scoped_lock aGuard( m_aMutex );
m_bOutputStreamCalled = true;
}
return uno::Reference< io::XOutputStream >( this );
}
void SAL_CALL XStream_impl::truncate()
{
if (osl::FileBase::E_None != m_aFile.setSize(0))
throw io::IOException( THROW_WHERE );
if (osl::FileBase::E_None != m_aFile.setPos(osl_Pos_Absolut,sal_uInt64(0)))
throw io::IOException( THROW_WHERE );
}
// XStream_impl private non interface methods
sal_Int32 SAL_CALL
XStream_impl::readBytes(
uno::Sequence< sal_Int8 >& aData,
sal_Int32 nBytesToRead )
{
if( ! m_nIsOpen )
throw io::IOException( THROW_WHERE );
try
{
aData.realloc(nBytesToRead);
}
catch (const std::bad_alloc&)
{
if( m_nIsOpen ) m_aFile.close();
throw io::BufferSizeExceededException( THROW_WHERE );
}
sal_uInt64 nrc(0);
if(m_aFile.read( aData.getArray(), sal_uInt64(nBytesToRead), nrc )
!= osl::FileBase::E_None)
{
throw io::IOException( THROW_WHERE );
}
if (nrc != static_cast<sal_uInt64>(nBytesToRead))
aData.realloc(nrc);
return static_cast<sal_Int32>(nrc);
}
sal_Int32
XStream_impl::readSomeBytes(
sal_Int8* pData,
sal_Int32 nBytesToRead )
{
if( ! m_nIsOpen )
throw io::IOException( THROW_WHERE );
sal_uInt64 nrc(0);
if(m_aFile.read( pData, sal_uInt64(nBytesToRead), nrc )
!= osl::FileBase::E_None)
{
throw io::IOException( THROW_WHERE );
}
return static_cast<sal_Int32>(nrc);
}
sal_Int32 SAL_CALL
XStream_impl::readSomeBytes(
uno::Sequence< sal_Int8 >& aData,
sal_Int32 nMaxBytesToRead )
{
return readBytes( aData,nMaxBytesToRead );
}
void SAL_CALL
XStream_impl::skipBytes( sal_Int32 nBytesToSkip )
{
m_aFile.setPos( osl_Pos_Current, sal_uInt64( nBytesToSkip ) );
}
sal_Int32 SAL_CALL
XStream_impl::available()
{
sal_Int64 avail = getLength() - getPosition();
return std::min<sal_Int64>(avail, SAL_MAX_INT32);
}
void SAL_CALL
XStream_impl::writeBytes( const uno::Sequence< sal_Int8 >& aData )
{
sal_uInt32 length = aData.getLength();
if(length)
{
sal_uInt64 nWrittenBytes(0);
const sal_Int8* p = aData.getConstArray();
if(osl::FileBase::E_None != m_aFile.write(static_cast<void const *>(p),sal_uInt64(length),nWrittenBytes) ||
nWrittenBytes != length )
throw io::IOException( THROW_WHERE );
}
}
void
XStream_impl::closeStream()
{
if( m_nIsOpen )
{
osl::FileBase::RC err = m_aFile.close();
if( err != osl::FileBase::E_None ) {
throw io::IOException(u"could not close file"_ustr);
}
m_nIsOpen = false;
}
}
void SAL_CALL
XStream_impl::closeInput()
{
std::scoped_lock aGuard( m_aMutex );
m_bInputStreamCalled = false;
if( ! m_bOutputStreamCalled )
closeStream();
}
void SAL_CALL
XStream_impl::closeOutput()
{
std::scoped_lock aGuard( m_aMutex );
m_bOutputStreamCalled = false;
if( ! m_bInputStreamCalled )
closeStream();
}
void SAL_CALL
XStream_impl::seek( sal_Int64 location )
{
if( location < 0 )
throw lang::IllegalArgumentException( THROW_WHERE, uno::Reference< uno::XInterface >(), 0 );
if( osl::FileBase::E_None != m_aFile.setPos( osl_Pos_Absolut, sal_uInt64( location ) ) )
throw io::IOException( THROW_WHERE );
}
sal_Int64 SAL_CALL
XStream_impl::getPosition()
{
sal_uInt64 uPos;
if( osl::FileBase::E_None != m_aFile.getPos( uPos ) )
throw io::IOException( THROW_WHERE );
return sal_Int64( uPos );
}
sal_Int64 SAL_CALL
XStream_impl::getLength()
{
sal_uInt64 uEndPos;
if ( m_aFile.getSize(uEndPos) != osl::FileBase::E_None )
throw io::IOException( THROW_WHERE );
return sal_Int64( uEndPos );
}
void SAL_CALL
XStream_impl::flush()
{}
void XStream_impl::waitForCompletion()
{
// At least on UNIX, to reliably learn about any errors encountered by
// asynchronous NFS write operations, without closing the file directly
// afterwards, there appears to be no cheaper way than to call fsync:
if (m_nIsOpen && m_aFile.sync() != osl::FileBase::E_None) {
throw io::IOException(
u"could not synchronize file to disc"_ustr,
getXWeak());
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V547 Expression 'm_nIsOpen' is always true.