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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: ucbstreamhelper.cxx,v $
*
* $Revision: 1.18 $
*
* last change: $Author: hr $ $Date: 2006-06-19 14:10:38 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#include <unotools/ucblockbytes.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <comphelper/processfactory.hxx>
#ifndef _COM_SUN_STAR_UCB_COMMANDABORTEDEXCEPTION_HPP_
#include <com/sun/star/ucb/CommandAbortedException.hpp>
#endif
#ifndef _COM_SUN_STAR_UCB_XCOMMANDENVIRONMENT_HDL_
#include <com/sun/star/ucb/XCommandEnvironment.hdl>
#endif
#ifndef _COM_SUN_STAR_UCB_INSERTCOMMANDARGUMENT_HPP_
#include <com/sun/star/ucb/InsertCommandArgument.hpp>
#endif
#ifndef _COM_SUN_STAR_IO_XACTIVEDATASTREAMER_HPP_
#include <com/sun/star/io/XActiveDataStreamer.hpp>
#endif
#include <ucbhelper/contentbroker.hxx>
#include <ucbhelper/content.hxx>
#include <tools/debug.hxx>
#include <unotools/streamwrap.hxx>
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::ucb;
using namespace ::com::sun::star::task;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;
namespace utl
{
static SvStream* lcl_CreateStream( const String& rFileName, StreamMode eOpenMode,
Reference < XInteractionHandler > xInteractionHandler,
UcbLockBytesHandler* pHandler, sal_Bool /*bForceSynchron*/, sal_Bool bEnsureFileExists )
{
SvStream* pStream = NULL;
::ucb::ContentBroker* pBroker = ::ucb::ContentBroker::get();
if ( pBroker )
{
UcbLockBytesRef xLockBytes;
if ( eOpenMode & STREAM_WRITE )
{
sal_Bool bTruncate = ( eOpenMode & STREAM_TRUNC ) != 0;
if ( bTruncate )
{
try
{
// truncate is implemented with deleting the original file
::ucb::Content aCnt( rFileName, Reference < XCommandEnvironment >() );
aCnt.executeCommand( ::rtl::OUString::createFromAscii( "delete" ), makeAny( sal_Bool( sal_True ) ) );
}
catch ( CommandAbortedException& )
{
// couldn't truncate/delete
}
catch ( ContentCreationException& )
{
}
catch ( Exception& )
{
}
}
if ( bEnsureFileExists || bTruncate )
{
try
{
// make sure that the desired file exists before trying to open
SvMemoryStream aStream(0,0);
::utl::OInputStreamWrapper* pInput = new ::utl::OInputStreamWrapper( aStream );
Reference< XInputStream > xInput( pInput );
::ucb::Content aContent( rFileName, Reference < XCommandEnvironment >() );
InsertCommandArgument aInsertArg;
aInsertArg.Data = xInput;
aInsertArg.ReplaceExisting = sal_False;
Any aCmdArg;
aCmdArg <<= aInsertArg;
aContent.executeCommand( ::rtl::OUString::createFromAscii( "insert" ), aCmdArg );
}
// it is NOT an error when the stream already exists and no truncation was desired
catch ( CommandAbortedException& )
{
// currently never an error is detected !
}
catch ( ContentCreationException& )
{
}
catch ( Exception& )
{
}
}
}
try
{
// create LockBytes using UCB
::ucb::Content aContent( rFileName, Reference < XCommandEnvironment >() );
xLockBytes = UcbLockBytes::CreateLockBytes( aContent.get(), Sequence < PropertyValue >(),
eOpenMode, xInteractionHandler, pHandler );
if ( xLockBytes.Is() )
{
pStream = new SvStream( xLockBytes );
pStream->SetBufferSize( 4096 );
pStream->SetError( xLockBytes->GetError() );
}
}
catch ( CommandAbortedException& )
{
}
catch ( ContentCreationException& )
{
}
catch ( Exception& )
{
}
}
else
// if no UCB is present at least conventional file io is supported
pStream = new SvFileStream( rFileName, eOpenMode );
return pStream;
}
//============================================================================
SvStream* UcbStreamHelper::CreateStream( const String& rFileName, StreamMode eOpenMode,
UcbLockBytesHandler* pHandler, sal_Bool bForceSynchron )
{
return lcl_CreateStream( rFileName, eOpenMode, Reference < XInteractionHandler >(), pHandler, bForceSynchron, sal_True /* bEnsureFileExists */ );
}
SvStream* UcbStreamHelper::CreateStream( const String& rFileName, StreamMode eOpenMode,
Reference < XInteractionHandler > xInteractionHandler,
UcbLockBytesHandler* pHandler, sal_Bool bForceSynchron )
{
return lcl_CreateStream( rFileName, eOpenMode, xInteractionHandler, pHandler, bForceSynchron, sal_True /* bEnsureFileExists */ );
}
SvStream* UcbStreamHelper::CreateStream( const String& rFileName, StreamMode eOpenMode,
sal_Bool bFileExists,
UcbLockBytesHandler* pHandler, sal_Bool bForceSynchron )
{
return lcl_CreateStream( rFileName, eOpenMode, Reference < XInteractionHandler >(), pHandler, bForceSynchron, !bFileExists );
}
SvStream* UcbStreamHelper::CreateStream( Reference < XInputStream > xStream )
{
SvStream* pStream = NULL;
UcbLockBytesRef xLockBytes = UcbLockBytes::CreateInputLockBytes( xStream );
if ( xLockBytes.Is() )
{
pStream = new SvStream( xLockBytes );
pStream->SetBufferSize( 4096 );
pStream->SetError( xLockBytes->GetError() );
}
return pStream;
}
SvStream* UcbStreamHelper::CreateStream( Reference < XStream > xStream )
{
SvStream* pStream = NULL;
if ( xStream->getOutputStream().is() )
{
UcbLockBytesRef xLockBytes = UcbLockBytes::CreateLockBytes( xStream );
if ( xLockBytes.Is() )
{
pStream = new SvStream( xLockBytes );
pStream->SetBufferSize( 4096 );
pStream->SetError( xLockBytes->GetError() );
}
}
else
return CreateStream( xStream->getInputStream() );
return pStream;
}
SvStream* UcbStreamHelper::CreateStream( Reference < XInputStream > xStream, sal_Bool bCloseStream )
{
SvStream* pStream = NULL;
UcbLockBytesRef xLockBytes = UcbLockBytes::CreateInputLockBytes( xStream );
if ( xLockBytes.Is() )
{
if ( !bCloseStream )
xLockBytes->setDontClose_Impl();
pStream = new SvStream( xLockBytes );
pStream->SetBufferSize( 4096 );
pStream->SetError( xLockBytes->GetError() );
}
return pStream;
};
SvStream* UcbStreamHelper::CreateStream( Reference < XStream > xStream, sal_Bool bCloseStream )
{
SvStream* pStream = NULL;
if ( xStream->getOutputStream().is() )
{
UcbLockBytesRef xLockBytes = UcbLockBytes::CreateLockBytes( xStream );
if ( xLockBytes.Is() )
{
if ( !bCloseStream )
xLockBytes->setDontClose_Impl();
pStream = new SvStream( xLockBytes );
pStream->SetBufferSize( 4096 );
pStream->SetError( xLockBytes->GetError() );
}
}
else
return CreateStream( xStream->getInputStream(), bCloseStream );
return pStream;
};
}
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