Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 327 insertions, 0 deletions

diff --git a/package/source/xstor/ohierarchyholder.cxx b/package/source/xstor/ohierarchyholder.cxx
new file mode 100644
index 000000000..209136bcd
--- /dev/null
+++ b/package/source/xstor/ohierarchyholder.cxx
@@ -0,0 +1,327 @@
+/* -*- 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 )
+{
+    ::osl::MutexGuard 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 )
+{
+    ::osl::MutexGuard 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;
+
+    {
+        ::osl::MutexGuard 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 );
+    {
+        ::osl::MutexGuard 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
+    {
+        {
+            osl::MutexGuard 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 )
+{
+    {
+        ::osl::MutexGuard 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: */