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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 "inputstream.hxx"
#include <com/sun/star/io/IOException.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <cppuhelper/queryinterface.hxx>
using namespace chelp;
using namespace com::sun::star;
XInputStream_impl::XInputStream_impl( const OUString& aUncPath )
: m_bIsOpen( false ),
m_aFile( aUncPath )
{
m_bIsOpen = ( osl::FileBase::E_None == m_aFile.open( osl_File_OpenFlag_Read ) );
}
XInputStream_impl::~XInputStream_impl()
{
if (m_bIsOpen)
m_aFile.close();
}
uno::Any SAL_CALL
XInputStream_impl::queryInterface( const uno::Type& rType )
{
uno::Any aRet = cppu::queryInterface( rType,
static_cast< io::XInputStream* >(this),
static_cast< io::XSeekable* >(this) );
return aRet.hasValue() ? aRet : OWeakObject::queryInterface( rType );
}
void SAL_CALL
XInputStream_impl::acquire()
throw()
{
OWeakObject::acquire();
}
void SAL_CALL
XInputStream_impl::release()
throw()
{
OWeakObject::release();
}
sal_Int32 SAL_CALL
XInputStream_impl::readBytes(
uno::Sequence< sal_Int8 >& aData,
sal_Int32 nBytesToRead )
{
if( ! m_bIsOpen )
throw io::IOException();
if (aData.getLength() < nBytesToRead)
aData.realloc(nBytesToRead);
//TODO! translate memory exhaustion (if it were detectable...) into
// io::BufferSizeExceededException
sal_uInt64 nBytesRead;
m_aFile.read( aData.getArray(), sal_uInt64(nBytesToRead), nBytesRead );
// 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 (nBytesRead != sal::static_int_cast<sal_uInt64>(nBytesToRead) )
aData.realloc(sal_Int32(nBytesRead));
return static_cast<sal_Int32>(nBytesRead);
}
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 )
{
if (m_aFile.setPos(osl_Pos_Current, sal_uInt64(nBytesToSkip)) != osl::FileBase::E_None)
{
throw io::IOException("XInputStream_impl::skipBytes failed seek");
}
}
sal_Int32 SAL_CALL
XInputStream_impl::available()
{
sal_uInt64 uPos;
if( osl::FileBase::E_None != m_aFile.getPos( uPos ) )
throw io::IOException();
sal_uInt64 uSize;
if( osl::FileBase::E_None != m_aFile.getSize( uSize ) )
throw io::IOException();
return std::min<sal_uInt64>(SAL_MAX_INT32, uSize - uPos);
}
void SAL_CALL
XInputStream_impl::closeInput()
{
if( m_bIsOpen )
{
osl::FileBase::RC err = m_aFile.close();
if( err != osl::FileBase::E_None )
throw io::IOException();
m_bIsOpen = false;
}
}
void SAL_CALL
XInputStream_impl::seek( sal_Int64 location )
{
if( location < 0 )
throw lang::IllegalArgumentException();
if( osl::FileBase::E_None != m_aFile.setPos( osl_Pos_Absolut, sal_uInt64( location ) ) )
throw io::IOException();
}
sal_Int64 SAL_CALL
XInputStream_impl::getPosition()
{
sal_uInt64 uPos;
if( osl::FileBase::E_None != m_aFile.getPos( uPos ) )
throw io::IOException();
return sal_Int64( uPos );
}
sal_Int64 SAL_CALL
XInputStream_impl::getLength()
{
osl::FileBase::RC err;
sal_uInt64 uCurrentPos, uEndPos;
err = m_aFile.getPos( uCurrentPos );
if( err != osl::FileBase::E_None )
throw io::IOException();
err = m_aFile.setPos( osl_Pos_End, 0 );
if( err != osl::FileBase::E_None )
throw io::IOException();
err = m_aFile.getPos( uEndPos );
if( err != osl::FileBase::E_None )
throw io::IOException();
err = m_aFile.setPos( osl_Pos_Absolut, uCurrentPos );
if( err != osl::FileBase::E_None )
throw io::IOException();
return sal_Int64( uEndPos );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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