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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: localoutputstream.hxx,v $
* $Revision: 1.7 $
*
* 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 CONFIGMGR_LOCALBE_LOCALOUTPUTSTREAM_HXX_
#define CONFIGMGR_LOCALBE_LOCALOUTPUTSTREAM_HXX_
#include "oslstream.hxx"
#include "filehelper.hxx"
#include <com/sun/star/configuration/backend/BackendAccessException.hpp>
namespace configmgr { namespace localbe {
namespace css = com::sun::star ;
namespace uno = css::uno ;
namespace io = css::io ;
namespace backend = css::configuration::backend ;
/**
Class wrapping the use of the XOutputStream implementation on a file
to make it handle a temporary file and synch the contents to the
actual file being accessed only on successful completion of the output
process.
*/
class LocalOutputStream : public cppu::WeakImplHelper1<io::XOutputStream>
{
public :
/**
Constructor using the URL of the file to access.
The actual writing will occur in a temporary file
whose name is derived from the URL, and the file
specified by the parameter will be overwritten
on closing the stream.
@param aFileUrl URL of the file to write
@throws com::sun::star::io::IOException
if access to the temporary file fails.
*/
LocalOutputStream(const rtl::OUString& aFileUrl)
throw (backend::BackendAccessException, uno::RuntimeException) ;
/** Destructor */
~LocalOutputStream(void) ;
// closeOutput and mark as successful
void finishOutput()
throw (backend::BackendAccessException, uno::RuntimeException) ;
protected :
// XOutputStream
virtual void SAL_CALL writeBytes(const uno::Sequence<sal_Int8>& aData)
throw (io::NotConnectedException,
io::BufferSizeExceededException,
io::IOException, uno::RuntimeException);
virtual void SAL_CALL flush(void)
throw (io::NotConnectedException,
io::BufferSizeExceededException,
io::IOException, uno::RuntimeException);
virtual void SAL_CALL closeOutput(void)
throw (io::NotConnectedException,
io::BufferSizeExceededException,
io::IOException, uno::RuntimeException) ;
private :
uno::Reference<io::XOutputStream> getOutputFile() ;
/** Temporary file used during access */
uno::Reference<io::XOutputStream> mTemporaryFile ;
/** URL of the target file */
rtl::OUString mFileUrl ;
/** URL of the temporary file */
rtl::OUString mTemporaryFileUrl ;
/** File being written */
osl::File *mWriteFile ;
} ;
} } // configmgr.localbe
#endif // CONFIGMGR_LOCALBE_LOCALOUTPUTSTREAM_HXX_
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