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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 <sal/config.h>
#include <com/sun/star/io/IOException.hpp>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/embed/ElementModes.hpp>
#include <com/sun/star/embed/XHierarchicalStorageAccess2.hpp>
#include <com/sun/star/embed/XTransactedObject.hpp>
#include <com/sun/star/embed/XTransactionBroadcaster.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
#include <cppuhelper/exc_hlp.hxx>
#include <o3tl/string_view.hxx>
#include "ohierarchyholder.hxx"
using namespace ::com::sun::star;
// OHierarchyHolder_Impl
uno::Reference< embed::XExtendedStorageStream > OHierarchyHolder_Impl::GetStreamHierarchically( sal_Int32 nStorageMode, std::vector<OUString>& aListPath, sal_Int32 nStreamMode, const ::comphelper::SequenceAsHashMap& aEncryptionData )
{
uno::Reference< embed::XStorage > xOwnStor( m_xWeakOwnStorage.get(), uno::UNO_QUERY_THROW );
if ( !( nStorageMode & embed::ElementModes::WRITE ) && ( nStreamMode & embed::ElementModes::WRITE ) )
throw io::IOException("invalid storage/stream mode combo");
uno::Reference< embed::XExtendedStorageStream > xResult =
m_xChild->GetStreamHierarchically( nStorageMode, aListPath, nStreamMode, aEncryptionData );
if ( !xResult.is() )
throw uno::RuntimeException();
return xResult;
}
void OHierarchyHolder_Impl::RemoveStreamHierarchically( std::vector<OUString>& aListPath )
{
uno::Reference< embed::XStorage > xOwnStor( m_xWeakOwnStorage.get(), uno::UNO_QUERY_THROW );
m_xChild->RemoveStreamHierarchically( aListPath );
}
// static
std::vector<OUString> OHierarchyHolder_Impl::GetListPathFromString( std::u16string_view aPath )
{
std::vector<OUString> aResult;
sal_Int32 nIndex = 0;
do
{
OUString aName( o3tl::getToken(aPath, 0, '/', nIndex ) );
if ( aName.isEmpty() )
throw lang::IllegalArgumentException();
aResult.push_back( aName );
}
while ( nIndex >= 0 );
return aResult;
}
// OHierarchyElement_Impl
uno::Reference< embed::XExtendedStorageStream > OHierarchyElement_Impl::GetStreamHierarchically( sal_Int32 nStorageMode, std::vector<OUString>& aListPath, sal_Int32 nStreamMode, const ::comphelper::SequenceAsHashMap& aEncryptionData )
{
std::unique_lock aGuard( m_aMutex );
if ( !( nStorageMode & embed::ElementModes::WRITE ) && ( nStreamMode & embed::ElementModes::WRITE ) )
throw io::IOException("invalid storage/stream mode combo");
if ( aListPath.empty() )
throw uno::RuntimeException();
OUString aNextName = *(aListPath.begin());
aListPath.erase( aListPath.begin() );
uno::Reference< embed::XExtendedStorageStream > xResult;
uno::Reference< embed::XStorage > xOwnStor = m_xOwnStorage.is() ? m_xOwnStorage
: uno::Reference< embed::XStorage >( m_xWeakOwnStorage.get(), uno::UNO_QUERY_THROW );
if ( aListPath.empty() )
{
if ( aEncryptionData.empty() )
{
uno::Reference< embed::XHierarchicalStorageAccess > xHStorage( xOwnStor, uno::UNO_QUERY_THROW );
xResult = xHStorage->openStreamElementByHierarchicalName( aNextName, nStreamMode );
}
else
{
uno::Reference< embed::XHierarchicalStorageAccess2 > xHStorage( xOwnStor, uno::UNO_QUERY_THROW );
xResult = xHStorage->openEncryptedStreamByHierarchicalName( aNextName, nStreamMode, aEncryptionData.getAsConstNamedValueList() );
}
uno::Reference< embed::XTransactedObject > xTransact( xResult, uno::UNO_QUERY );
if ( xTransact.is() )
{
// the existence of the transacted object means that the stream is opened for writing also
// so the whole chain must be committed
uno::Reference< embed::XTransactionBroadcaster > xTrBroadcast( xTransact, uno::UNO_QUERY_THROW );
xTrBroadcast->addTransactionListener( static_cast< embed::XTransactionListener* >( this ) );
}
else
{
uno::Reference< lang::XComponent > xStreamComp( xResult, uno::UNO_QUERY_THROW );
xStreamComp->addEventListener( static_cast< lang::XEventListener* >( this ) );
}
m_aOpenStreams.emplace_back( xResult );
}
else
{
bool bNewElement = false;
::rtl::Reference< OHierarchyElement_Impl > aElement;
OHierarchyElementList_Impl::iterator aIter = m_aChildren.find( aNextName );
if ( aIter != m_aChildren.end() )
aElement = aIter->second;
if ( !aElement.is() )
{
bNewElement = true;
uno::Reference< embed::XStorage > xChildStorage = xOwnStor->openStorageElement( aNextName, nStorageMode );
if ( !xChildStorage.is() )
throw uno::RuntimeException();
aElement = new OHierarchyElement_Impl( xChildStorage );
}
xResult = aElement->GetStreamHierarchically( nStorageMode, aListPath, nStreamMode, aEncryptionData );
if ( !xResult.is() )
throw uno::RuntimeException();
if ( bNewElement )
{
m_aChildren[aNextName] = aElement;
aElement->SetParent( this );
}
}
// the subelement was opened successfully, remember the storage to let it be locked
m_xOwnStorage = xOwnStor;
return xResult;
}
void OHierarchyElement_Impl::RemoveStreamHierarchically( std::vector<OUString>& aListPath )
{
std::unique_lock aGuard( m_aMutex );
if ( aListPath.empty() )
throw uno::RuntimeException();
OUString aNextName = *(aListPath.begin());
aListPath.erase( aListPath.begin() );
uno::Reference< embed::XStorage > xOwnStor = m_xOwnStorage.is() ? m_xOwnStorage
: uno::Reference< embed::XStorage >( m_xWeakOwnStorage.get(), uno::UNO_QUERY_THROW );
if ( aListPath.empty() )
{
xOwnStor->removeElement( aNextName );
}
else
{
::rtl::Reference< OHierarchyElement_Impl > aElement;
OHierarchyElementList_Impl::iterator aIter = m_aChildren.find( aNextName );
if ( aIter != m_aChildren.end() )
aElement = aIter->second;
if ( !aElement.is() )
{
uno::Reference< embed::XStorage > xChildStorage = xOwnStor->openStorageElement( aNextName,
embed::ElementModes::READWRITE );
if ( !xChildStorage.is() )
throw uno::RuntimeException();
aElement = new OHierarchyElement_Impl( xChildStorage );
}
aElement->RemoveStreamHierarchically( aListPath );
}
uno::Reference< embed::XTransactedObject > xTransact( xOwnStor, uno::UNO_QUERY );
if ( xTransact.is() )
xTransact->commit();
TestForClosing();
}
void OHierarchyElement_Impl::Commit()
{
::rtl::Reference< OHierarchyElement_Impl > xKeepAlive( this );
::rtl::Reference< OHierarchyElement_Impl > aParent;
uno::Reference< embed::XStorage > xOwnStor;
{
std::unique_lock aGuard( m_aMutex );
aParent = m_rParent;
xOwnStor = m_xOwnStorage;
}
if ( xOwnStor.is() )
{
uno::Reference< embed::XTransactedObject > xTransact( xOwnStor, uno::UNO_QUERY_THROW );
xTransact->commit();
if ( aParent.is() )
aParent->Commit();
}
}
void OHierarchyElement_Impl::TestForClosing()
{
::rtl::Reference< OHierarchyElement_Impl > xKeepAlive( this );
{
std::unique_lock aGuard( m_aMutex );
if ( m_aOpenStreams.empty() && m_aChildren.empty() )
{
if ( m_rParent.is() )
{
// only the root storage should not be disposed, other storages can be disposed
if ( m_xOwnStorage.is() )
{
try
{
m_xOwnStorage->dispose();
}
catch( uno::Exception& )
{}
}
m_rParent->RemoveElement( this );
}
m_xOwnStorage.clear();
}
}
}
void SAL_CALL OHierarchyElement_Impl::disposing( const lang::EventObject& Source )
{
try
{
{
std::unique_lock aGuard(m_aMutex);
uno::Reference< embed::XExtendedStorageStream > xStream(Source.Source, uno::UNO_QUERY);
m_aOpenStreams.erase(std::remove_if(m_aOpenStreams.begin(), m_aOpenStreams.end(),
[&xStream](const OWeakStorRefVector_Impl::value_type& rxStorage) {
return !rxStorage.get().is() || rxStorage.get() == xStream; }),
m_aOpenStreams.end());
}
TestForClosing();
}
catch( uno::Exception& ex )
{
css::uno::Any anyEx = cppu::getCaughtException();
throw lang::WrappedTargetRuntimeException( ex.Message,
nullptr, anyEx ); // no exception must happen here, usually an exception means disaster
}
}
void OHierarchyElement_Impl::RemoveElement( const ::rtl::Reference< OHierarchyElement_Impl >& aRef )
{
{
std::unique_lock aGuard( m_aMutex );
OHierarchyElementList_Impl::iterator aIter = m_aChildren.begin();
while (aIter != m_aChildren.end())
{
if (aIter->second == aRef )
aIter = m_aChildren.erase(aIter);
else
++aIter;
}
}
TestForClosing();
}
// XTransactionListener
void SAL_CALL OHierarchyElement_Impl::preCommit( const css::lang::EventObject& /*aEvent*/ )
{
}
void SAL_CALL OHierarchyElement_Impl::commited( const css::lang::EventObject& /*aEvent*/ )
{
try
{
Commit();
}
catch( const uno::Exception& )
{
css::uno::Any anyEx = cppu::getCaughtException();
throw lang::WrappedTargetRuntimeException(
"Can not commit storage sequence!",
uno::Reference< uno::XInterface >(),
anyEx );
}
}
void SAL_CALL OHierarchyElement_Impl::preRevert( const css::lang::EventObject& /*aEvent*/ )
{
}
void SAL_CALL OHierarchyElement_Impl::reverted( const css::lang::EventObject& /*aEvent*/ )
{
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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