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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/IOException.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <osl/diagnose.h>
#include "filinpstr.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
XInputStream_impl::XInputStream_impl( const OUString& aUncPath, bool bLock )
: m_aFile( aUncPath ),
m_nErrorCode( TaskHandlerErr::NO_ERROR ),
m_nMinorErrorCode( 0 )
{
sal_uInt32 nFlags = osl_File_OpenFlag_Read;
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_INPUTSTREAM;
m_nMinorErrorCode = err;
}
else
m_nIsOpen = true;
}
XInputStream_impl::~XInputStream_impl()
{
try
{
closeInput();
}
catch (io::IOException const &)
{
OSL_FAIL("unexpected situation");
}
catch (uno::RuntimeException const &)
{
OSL_FAIL("unexpected situation");
}
}
sal_Int32 SAL_CALL
XInputStream_impl::readBytes(
uno::Sequence< sal_Int8 >& aData,
sal_Int32 nBytesToRead )
{
if( ! m_nIsOpen ) throw io::IOException( THROW_WHERE );
aData.realloc(nBytesToRead);
//TODO! translate memory exhaustion (if it were detectable...) into
// io::BufferSizeExceededException
sal_uInt64 nrc(0);
if(m_aFile.read( aData.getArray(),sal_uInt64(nBytesToRead),nrc )
!= osl::FileBase::E_None)
throw io::IOException( THROW_WHERE );
// Shrink aData in case we read less than nBytesToRead (XInputStream
// documentation does not tell whether this is required, and I do not know
// if any code relies on this, so be conservative---SB):
if (sal::static_int_cast<sal_Int32>(nrc) != nBytesToRead)
aData.realloc(sal_Int32(nrc));
return static_cast<sal_Int32>(nrc);
}
sal_Int32 SAL_CALL
XInputStream_impl::readSomeBytes(
uno::Sequence< sal_Int8 >& aData,
sal_Int32 nMaxBytesToRead )
{
return readBytes( aData,nMaxBytesToRead );
}
void SAL_CALL
XInputStream_impl::skipBytes( sal_Int32 nBytesToSkip )
{
m_aFile.setPos( osl_Pos_Current, sal_uInt64( nBytesToSkip ) );
}
sal_Int32 SAL_CALL
XInputStream_impl::available()
{
sal_Int64 avail = getLength() - getPosition();
return std::min<sal_Int64>(avail, SAL_MAX_INT32);
}
void SAL_CALL
XInputStream_impl::closeInput()
{
if( m_nIsOpen )
{
osl::FileBase::RC err = m_aFile.close();
if( err != osl::FileBase::E_None )
throw io::IOException( THROW_WHERE );
m_nIsOpen = false;
}
}
void SAL_CALL
XInputStream_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
XInputStream_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
XInputStream_impl::getLength()
{
sal_uInt64 uEndPos;
if ( m_aFile.getSize(uEndPos) != osl::FileBase::E_None )
throw io::IOException( THROW_WHERE );
return sal_Int64( uEndPos );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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