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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _SFX_OPOSTPONEDTRUNCATIONFILESTREAM_HXX
#define _SFX_OPOSTPONEDTRUNCATIONFILESTREAM_HXX
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <com/sun/star/io/XTruncate.hpp>
#include <com/sun/star/io/XStream.hpp>
#include <com/sun/star/embed/XTransactedObject.hpp>
#include <com/sun/star/beans/XPropertySetInfo.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/ucb/XSimpleFileAccess.hpp>
#include <com/sun/star/io/XAsyncOutputMonitor.hpp>
#include <osl/mutex.hxx>
#include <cppuhelper/implbase6.hxx>
#include "sfx2/dllapi.h"
//==================================================================
// OPostponedTruncationFileStream
//
// Allows to get stream access to a file, where the first truncation
// of the file is postponed till the first writing. If no writing happens
// after the first truncation/creation, it has no effect. ( The postponing of
// the creation can be switched off during initialization. Here the postponing
// of the creation means that the file will be created immediatelly, but
// if nothing is written into it, it will be removed during destruction
// of the object. )
//
// On creation of this object the target file is scheduled for
// creation/truncation. But the action happens only during the first
// write access. After the first write access the object behaves
// itself as the original stream.
//==================================================================
struct PTFStreamData_Impl;
class SFX2_DLLPUBLIC OPostponedTruncationFileStream
: public ::cppu::WeakImplHelper6 <
::com::sun::star::io::XStream,
::com::sun::star::io::XInputStream,
::com::sun::star::io::XOutputStream,
::com::sun::star::io::XTruncate,
::com::sun::star::io::XSeekable,
::com::sun::star::io::XAsyncOutputMonitor >
{
::osl::Mutex m_aMutex;
PTFStreamData_Impl* m_pStreamData;
void CloseAll_Impl();
void CheckScheduledTruncation_Impl();
public:
OPostponedTruncationFileStream(
const ::rtl::OUString& aURL,
const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& xFactory,
const ::com::sun::star::uno::Reference< ::com::sun::star::ucb::XSimpleFileAccess >& xFileAccess,
const ::com::sun::star::uno::Reference< ::com::sun::star::io::XStream >& xStream,
sal_Bool bDelete );
~OPostponedTruncationFileStream();
// com::sun::star::io::XStream
virtual ::com::sun::star::uno::Reference< ::com::sun::star::io::XInputStream > SAL_CALL getInputStream( ) throw (::com::sun::star::uno::RuntimeException);
virtual ::com::sun::star::uno::Reference< ::com::sun::star::io::XOutputStream > SAL_CALL getOutputStream( ) throw (::com::sun::star::uno::RuntimeException);
// com::sun::star::io::XInputStream
virtual ::sal_Int32 SAL_CALL readBytes( ::com::sun::star::uno::Sequence< ::sal_Int8 >& aData, ::sal_Int32 nBytesToRead ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual ::sal_Int32 SAL_CALL readSomeBytes( ::com::sun::star::uno::Sequence< ::sal_Int8 >& aData, ::sal_Int32 nMaxBytesToRead ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual void SAL_CALL skipBytes( ::sal_Int32 nBytesToSkip ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual ::sal_Int32 SAL_CALL available( ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual void SAL_CALL closeInput( ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
// com::sun::star::io::XOutputStream
virtual void SAL_CALL writeBytes( const ::com::sun::star::uno::Sequence< ::sal_Int8 >& aData ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual void SAL_CALL flush( ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual void SAL_CALL closeOutput( ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
// com::sun::star::io::XTruncate
virtual void SAL_CALL truncate( ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
// com::sun::star::io::XSeekable
virtual void SAL_CALL seek( ::sal_Int64 location ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual ::sal_Int64 SAL_CALL getPosition( ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
virtual ::sal_Int64 SAL_CALL getLength( ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
// ::com::sun::star::io::XAsyncOutputMonitor
virtual void SAL_CALL waitForCompletion( ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
};
#endif //_SFX_OPOSTPONEDTRUNCATIONFILESTREAM_HXX
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