AOO410/main/package/source/xstor/selfterminatefilestream.cxx

/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_package.hxx"

#include <com/sun/star/ucb/XSimpleFileAccess.hpp>

#include "selfterminatefilestream.hxx"
#include <comphelper/processfactory.hxx>

using namespace ::com::sun::star;

//-----------------------------------------------
OSelfTerminateFileStream::OSelfTerminateFileStream( const uno::Reference< lang::XMultiServiceFactory > xFactory, const ::rtl::OUString& aURL )
: m_aURL( aURL )
{
    uno::Reference< lang::XMultiServiceFactory > xOwnFactory = xFactory;
    if ( !xOwnFactory.is() )
        xOwnFactory.set( ::comphelper::getProcessServiceFactory(), uno::UNO_SET_THROW );

    // IMPORTANT: The implementation is based on idea that m_xFileAccess, m_xInputStream and m_xSeekable are always set
    // otherwise an exception is thrown in constructor

    m_xFileAccess.set( xOwnFactory->createInstance (
                            ::rtl::OUString::createFromAscii( "com.sun.star.ucb.SimpleFileAccess" ) ),
                       uno::UNO_QUERY_THROW );

    m_xInputStream.set( m_xFileAccess->openFileRead( aURL ), uno::UNO_SET_THROW );
    m_xSeekable.set( m_xInputStream, uno::UNO_QUERY_THROW );
}

//-----------------------------------------------
OSelfTerminateFileStream::~OSelfTerminateFileStream()
{
    CloseStreamDeleteFile();
}

//-----------------------------------------------
void OSelfTerminateFileStream::CloseStreamDeleteFile()
{
    try
    {
        m_xInputStream->closeInput();
    }
    catch( uno::Exception& )
    {}

    try
    {
        m_xFileAccess->kill( m_aURL );
    }
    catch( uno::Exception& )
    {}
}

//-----------------------------------------------
sal_Int32 SAL_CALL OSelfTerminateFileStream::readBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) 
        throw ( io::NotConnectedException,
                io::BufferSizeExceededException,
                io::IOException,
                uno::RuntimeException )
{
    return m_xInputStream->readBytes( aData, nBytesToRead );
}

//-----------------------------------------------
sal_Int32 SAL_CALL OSelfTerminateFileStream::readSomeBytes( uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) 
        throw ( io::NotConnectedException,
                io::BufferSizeExceededException,
                io::IOException,
                uno::RuntimeException )
{
    return m_xInputStream->readSomeBytes( aData, nMaxBytesToRead );
}

//-----------------------------------------------
void SAL_CALL OSelfTerminateFileStream::skipBytes( sal_Int32 nBytesToSkip ) 
        throw ( io::NotConnectedException,
                io::BufferSizeExceededException,
                io::IOException,
                uno::RuntimeException )
{
    return m_xInputStream->skipBytes( nBytesToSkip );
}

//-----------------------------------------------
sal_Int32 SAL_CALL OSelfTerminateFileStream::available(  ) 
        throw ( io::NotConnectedException,
                io::IOException,
                uno::RuntimeException )
{
    return m_xInputStream->available();
}

//-----------------------------------------------
void SAL_CALL OSelfTerminateFileStream::closeInput(  ) 
        throw ( io::NotConnectedException,
                io::IOException,
                uno::RuntimeException )
{
    CloseStreamDeleteFile();
}

//-----------------------------------------------
void SAL_CALL OSelfTerminateFileStream::seek( sal_Int64 location )
        throw ( lang::IllegalArgumentException,
                io::IOException,
                uno::RuntimeException )
{
    m_xSeekable->seek( location );
}

//-----------------------------------------------
sal_Int64 SAL_CALL OSelfTerminateFileStream::getPosition()
        throw ( io::IOException, 
                uno::RuntimeException)
{
    return m_xSeekable->getPosition();
}

//-----------------------------------------------
sal_Int64 SAL_CALL OSelfTerminateFileStream::getLength()
        throw ( io::IOException,
                uno::RuntimeException )
{
    return m_xSeekable->getLength();
}