Adding upstream version 4:24.2.0.upstream/4%24.2.0

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

1 files changed, 862 insertions, 0 deletions

diff --git a/cppuhelper/source/factory.cxx b/cppuhelper/source/factory.cxx
new file mode 100644
index 0000000000..d039e43824
--- /dev/null
+++ b/cppuhelper/source/factory.cxx
@@ -0,0 +1,862 @@
+/* -*- 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/log.hxx>
+#include <osl/diagnose.h>
+#include <osl/mutex.hxx>
+#include <cppuhelper/basemutex.hxx>
+#include <cppuhelper/weak.hxx>
+#include <cppuhelper/compbase.hxx>
+#include <cppuhelper/factory.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/queryinterface.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <rtl/unload.h>
+
+#include <cppuhelper/propshlp.hxx>
+#include <o3tl/string_view.hxx>
+
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XSingleServiceFactory.hpp>
+#include <com/sun/star/lang/XSingleComponentFactory.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/loader/XImplementationLoader.hpp>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/uno/XUnloadingPreference.hpp>
+#include <com/sun/star/beans/PropertyAttribute.hpp>
+
+#include <memory>
+#include <utility>
+
+
+using namespace osl;
+using namespace com::sun::star;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::loader;
+using namespace com::sun::star::registry;
+
+namespace cppu
+{
+
+namespace {
+
+class OFactoryComponentHelper
+    : public cppu::BaseMutex
+    , public WeakComponentImplHelper<
+          XServiceInfo,
+          XSingleServiceFactory,
+          lang::XSingleComponentFactory,
+          XUnloadingPreference>
+{
+public:
+    OFactoryComponentHelper(
+        const Reference<XMultiServiceFactory > & rServiceManager,
+        OUString aImplementationName_,
+        ComponentInstantiation pCreateFunction_,
+        ComponentFactoryFunc fptr,
+        const Sequence< OUString > * pServiceNames_,
+        bool bOneInstance_ )
+        : WeakComponentImplHelper( m_aMutex )
+        , bOneInstance( bOneInstance_ )
+        , xSMgr( rServiceManager )
+        , pCreateFunction( pCreateFunction_ )
+        , m_fptr( fptr )
+        , aImplementationName(std::move( aImplementationName_ ))
+        {
+            if( pServiceNames_ )
+                aServiceNames = *pServiceNames_;
+        }
+
+    // XSingleServiceFactory
+    Reference<XInterface > SAL_CALL createInstance() override;
+    Reference<XInterface > SAL_CALL createInstanceWithArguments( const Sequence<Any>& Arguments ) override;
+    // XSingleComponentFactory
+    virtual Reference< XInterface > SAL_CALL createInstanceWithContext(
+        Reference< XComponentContext > const & xContext ) override;
+    virtual Reference< XInterface > SAL_CALL createInstanceWithArgumentsAndContext(
+        Sequence< Any > const & rArguments,
+        Reference< XComponentContext > const & xContext ) override;
+
+    // XServiceInfo
+    OUString SAL_CALL getImplementationName() override;
+    sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+    Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+    // XTypeProvider
+    virtual Sequence< Type > SAL_CALL getTypes() override;
+
+    // XUnloadingPreference
+    virtual sal_Bool SAL_CALL releaseOnNotification() override;
+
+    // WeakComponentImplHelper
+    void SAL_CALL disposing() override;
+
+private:
+    css::uno::Reference<css::uno::XInterface> createInstanceWithArgumentsEveryTime(
+        css::uno::Sequence<css::uno::Any> const & rArguments,
+        css::uno::Reference<css::uno::XComponentContext> const & xContext);
+
+    Reference<XInterface >  xTheInstance;
+    bool                bOneInstance;
+protected:
+    // needed for implementing XUnloadingPreference in inheriting classes
+    bool isOneInstance() const {return bOneInstance;}
+    bool isInstance() const {return xTheInstance.is();}
+
+    /**
+     * Create an instance specified by the factory. The one instance logic is implemented
+     * in the createInstance and createInstanceWithArguments methods.
+     * @return the newly created instance. Do not return a previous (one instance) instance.
+     * @throw css::uno::Exception
+     * @throw css::uno::RuntimeException
+     */
+    virtual Reference<XInterface >  createInstanceEveryTime(
+        Reference< XComponentContext > const & xContext );
+
+    Reference<XMultiServiceFactory > xSMgr;
+    ComponentInstantiation           pCreateFunction;
+    ComponentFactoryFunc             m_fptr;
+    Sequence< OUString >             aServiceNames;
+    OUString                         aImplementationName;
+};
+
+}
+
+// XTypeProvider
+Sequence< Type > OFactoryComponentHelper::getTypes()
+{
+    Type ar[ 4 ];
+    ar[ 0 ] = cppu::UnoType<XSingleServiceFactory>::get();
+    ar[ 1 ] = cppu::UnoType<XServiceInfo>::get();
+    ar[ 2 ] = cppu::UnoType<XUnloadingPreference>::get();
+
+    if (m_fptr)
+        ar[ 3 ] = cppu::UnoType<XSingleComponentFactory>::get();
+
+    return Sequence< Type >( ar, m_fptr ? 4 : 3 );
+}
+
+// OFactoryComponentHelper
+Reference<XInterface > OFactoryComponentHelper::createInstanceEveryTime(
+    Reference< XComponentContext > const & xContext )
+{
+    if (m_fptr)
+    {
+        return (*m_fptr)( xContext );
+    }
+    if( pCreateFunction )
+    {
+        if (xContext.is())
+        {
+            Reference< lang::XMultiServiceFactory > xContextMgr(
+                xContext->getServiceManager(), UNO_QUERY );
+            if (xContextMgr.is())
+                return (*pCreateFunction)( xContextMgr );
+        }
+        return (*pCreateFunction)( xSMgr );
+    }
+    return Reference< XInterface >();
+}
+
+// XSingleServiceFactory
+Reference<XInterface > OFactoryComponentHelper::createInstance()
+{
+    if( bOneInstance )
+    {
+        if( !xTheInstance.is() )
+        {
+            MutexGuard aGuard( m_aMutex );
+            if( !xTheInstance.is() )
+                xTheInstance = createInstanceEveryTime( Reference< XComponentContext >() );
+        }
+        return xTheInstance;
+    }
+    return createInstanceEveryTime( Reference< XComponentContext >() );
+}
+
+Reference<XInterface > OFactoryComponentHelper::createInstanceWithArguments(
+    const Sequence<Any>& Arguments )
+{
+    if( bOneInstance )
+    {
+        if( !xTheInstance.is() )
+        {
+            MutexGuard aGuard( m_aMutex );
+//          OSL_ENSURE( !xTheInstance.is(), "### arguments will be ignored!" );
+            if( !xTheInstance.is() )
+                xTheInstance = createInstanceWithArgumentsEveryTime(
+                    Arguments, Reference< XComponentContext >() );
+        }
+        return xTheInstance;
+    }
+    return createInstanceWithArgumentsEveryTime( Arguments, Reference< XComponentContext >() );
+}
+
+// XSingleComponentFactory
+
+Reference< XInterface > OFactoryComponentHelper::createInstanceWithContext(
+    Reference< XComponentContext > const & xContext )
+{
+    if( bOneInstance )
+    {
+        if( !xTheInstance.is() )
+        {
+            MutexGuard aGuard( m_aMutex );
+//          OSL_ENSURE( !xTheInstance.is(), "### context will be ignored!" );
+            if( !xTheInstance.is() )
+                xTheInstance = createInstanceEveryTime( xContext );
+        }
+        return xTheInstance;
+    }
+    return createInstanceEveryTime( xContext );
+}
+
+Reference< XInterface > OFactoryComponentHelper::createInstanceWithArgumentsAndContext(
+    Sequence< Any > const & rArguments,
+    Reference< XComponentContext > const & xContext )
+{
+    if( bOneInstance )
+    {
+        if( !xTheInstance.is() )
+        {
+            MutexGuard aGuard( m_aMutex );
+//          OSL_ENSURE( !xTheInstance.is(), "### context and arguments will be ignored!" );
+            if( !xTheInstance.is() )
+                xTheInstance = createInstanceWithArgumentsEveryTime( rArguments, xContext );
+        }
+        return xTheInstance;
+    }
+    return createInstanceWithArgumentsEveryTime( rArguments, xContext );
+}
+
+css::uno::Reference<css::uno::XInterface>
+OFactoryComponentHelper::createInstanceWithArgumentsEveryTime(
+    css::uno::Sequence<css::uno::Any> const & rArguments,
+    css::uno::Reference<css::uno::XComponentContext> const & xContext)
+{
+    Reference< XInterface > xRet( createInstanceEveryTime( xContext ) );
+
+    Reference< lang::XInitialization > xInit( xRet, UNO_QUERY );
+    // always call initialize, even if there are no arguments. #i63511#
+    if (xInit.is())
+    {
+        xInit->initialize( rArguments );
+    }
+    else
+    {
+        if ( rArguments.hasElements() )
+        {
+            // dispose the here created UNO object before throwing out exception
+            // to avoid risk of memory leaks #i113722#
+            Reference<XComponent> xComp( xRet, UNO_QUERY );
+            if (xComp.is())
+                xComp->dispose();
+
+            throw lang::IllegalArgumentException(
+                "cannot pass arguments to component => no XInitialization implemented!",
+                Reference< XInterface >(), 0 );
+        }
+    }
+
+    return xRet;
+}
+
+
+// WeakComponentImplHelper
+void OFactoryComponentHelper::disposing()
+{
+    Reference<XInterface > x;
+    {
+        // do not delete in the guard section
+        MutexGuard aGuard( m_aMutex );
+        x = xTheInstance;
+        xTheInstance.clear();
+    }
+    // if it is a component call dispose at the component
+    Reference<XComponent > xComp( x, UNO_QUERY );
+    if( xComp.is() )
+        xComp->dispose();
+}
+
+// XServiceInfo
+OUString OFactoryComponentHelper::getImplementationName()
+{
+    return aImplementationName;
+}
+
+// XServiceInfo
+sal_Bool OFactoryComponentHelper::supportsService(
+    const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+// XServiceInfo
+Sequence< OUString > OFactoryComponentHelper::getSupportedServiceNames()
+{
+    return aServiceNames;
+}
+
+// XUnloadingPreference
+// This class is used for single factories, component factories and
+// one-instance factories. Depending on the usage this function has
+// to return different values.
+// one-instance factory: sal_False
+// single factory: sal_True
+// component factory: sal_True
+sal_Bool SAL_CALL OFactoryComponentHelper::releaseOnNotification()
+{
+    if( bOneInstance)
+        return false;
+    return true;
+}
+
+namespace {
+
+class ORegistryFactoryHelper : public OFactoryComponentHelper,
+                               public OPropertySetHelper
+
+{
+public:
+    ORegistryFactoryHelper(
+        const Reference<XMultiServiceFactory > & rServiceManager,
+        const OUString & rImplementationName_,
+        const Reference<XRegistryKey > & xImplementationKey_,
+        bool bOneInstance_ )
+            : OFactoryComponentHelper(
+                rServiceManager, rImplementationName_, nullptr, nullptr, nullptr, bOneInstance_ ),
+              OPropertySetHelper( WeakComponentImplHelper::rBHelper ),
+              xImplementationKey( xImplementationKey_ )
+        {}
+
+    // XInterface
+    virtual Any SAL_CALL queryInterface( Type const & type ) override;
+    virtual void SAL_CALL acquire() noexcept override;
+    virtual void SAL_CALL release() noexcept override;
+    // XTypeProvider
+    virtual Sequence< Type > SAL_CALL getTypes() override;
+    // XPropertySet
+    virtual Reference< beans::XPropertySetInfo > SAL_CALL getPropertySetInfo() override;
+
+    // OPropertySetHelper
+    virtual IPropertyArrayHelper & SAL_CALL getInfoHelper() override;
+    virtual sal_Bool SAL_CALL convertFastPropertyValue(
+        Any & rConvertedValue, Any & rOldValue,
+        sal_Int32 nHandle, Any const & rValue ) override;
+    virtual void SAL_CALL setFastPropertyValue_NoBroadcast(
+        sal_Int32 nHandle, Any const & rValue ) override;
+    using OPropertySetHelper::getFastPropertyValue;
+    virtual void SAL_CALL getFastPropertyValue(
+        Any & rValue, sal_Int32 nHandle ) const override;
+
+    // OFactoryComponentHelper
+    Reference<XInterface > createInstanceEveryTime(
+        Reference< XComponentContext > const & xContext ) override;
+
+    // XSingleServiceFactory
+    Reference<XInterface > SAL_CALL createInstanceWithArguments(const Sequence<Any>& Arguments) override;
+    // XSingleComponentFactory
+    Reference< XInterface > SAL_CALL createInstanceWithArgumentsAndContext(
+        Sequence< Any > const & rArguments,
+        Reference< XComponentContext > const & xContext ) override;
+
+    // XServiceInfo
+    Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+    // XUnloadingPreference
+    sal_Bool SAL_CALL releaseOnNotification() override;
+
+
+private:
+    /// @throws css::uno::Exception
+    /// @throws css::uno::RuntimeException
+    Reference< XInterface > createModuleFactory();
+
+    /** The registry key of the implementation section */
+    Reference<XRegistryKey >    xImplementationKey;
+    /** The factory created with the loader. */
+    Reference<XSingleComponentFactory > xModuleFactory;
+    Reference<XSingleServiceFactory >   xModuleFactoryDepr;
+    Reference< beans::XPropertySetInfo > m_xInfo;
+    std::unique_ptr< IPropertyArrayHelper > m_property_array_helper;
+protected:
+    using OPropertySetHelper::getTypes;
+};
+
+}
+
+// XInterface
+
+Any SAL_CALL ORegistryFactoryHelper::queryInterface(
+    Type const & type )
+{
+    Any ret( OFactoryComponentHelper::queryInterface( type ) );
+    if (ret.hasValue())
+        return ret;
+    return OPropertySetHelper::queryInterface( type );
+}
+
+
+void ORegistryFactoryHelper::acquire() noexcept
+{
+    OFactoryComponentHelper::acquire();
+}
+
+
+void ORegistryFactoryHelper::release() noexcept
+{
+    OFactoryComponentHelper::release();
+}
+
+// XTypeProvider
+
+Sequence< Type > ORegistryFactoryHelper::getTypes()
+{
+    Sequence< Type > types( OFactoryComponentHelper::getTypes() );
+    sal_Int32 pos = types.getLength();
+    types.realloc( pos + 3 );
+    Type * p = types.getArray();
+    p[ pos++ ] = cppu::UnoType<beans::XMultiPropertySet>::get();
+    p[ pos++ ] = cppu::UnoType<beans::XFastPropertySet>::get();
+    p[ pos++ ] = cppu::UnoType<beans::XPropertySet>::get();
+    return types;
+}
+
+// XPropertySet
+
+Reference< beans::XPropertySetInfo >
+ORegistryFactoryHelper::getPropertySetInfo()
+{
+    ::osl::MutexGuard guard( m_aMutex );
+    if (! m_xInfo.is())
+        m_xInfo = createPropertySetInfo( getInfoHelper() );
+    return m_xInfo;
+}
+
+// OPropertySetHelper
+
+IPropertyArrayHelper & ORegistryFactoryHelper::getInfoHelper()
+{
+    ::osl::MutexGuard guard( m_aMutex );
+    if (m_property_array_helper == nullptr)
+    {
+        beans::Property prop(
+            "ImplementationKey" /* name */,
+            0 /* handle */,
+            cppu::UnoType<decltype(xImplementationKey)>::get(),
+            beans::PropertyAttribute::READONLY |
+            beans::PropertyAttribute::OPTIONAL );
+        m_property_array_helper.reset(
+            new ::cppu::OPropertyArrayHelper( &prop, 1 ) );
+    }
+    return *m_property_array_helper;
+}
+
+
+sal_Bool ORegistryFactoryHelper::convertFastPropertyValue(
+    Any &, Any &, sal_Int32, Any const & )
+{
+    OSL_FAIL( "unexpected!" );
+    return false;
+}
+
+
+void ORegistryFactoryHelper::setFastPropertyValue_NoBroadcast(
+    sal_Int32, Any const & )
+{
+    throw beans::PropertyVetoException(
+        "unexpected: only readonly properties!",
+        static_cast< OWeakObject * >(this) );
+}
+
+
+void ORegistryFactoryHelper::getFastPropertyValue(
+    Any & rValue, sal_Int32 nHandle ) const
+{
+    if (nHandle == 0)
+    {
+        rValue <<= xImplementationKey;
+    }
+    else
+    {
+        rValue.clear();
+        throw beans::UnknownPropertyException(
+            "unknown property!", static_cast< OWeakObject * >(
+                const_cast< ORegistryFactoryHelper * >(this) ) );
+    }
+}
+
+Reference<XInterface > ORegistryFactoryHelper::createInstanceEveryTime(
+    Reference< XComponentContext > const & xContext )
+{
+    if( !xModuleFactory.is() && !xModuleFactoryDepr.is() )
+    {
+        Reference< XInterface > x( createModuleFactory() );
+        if (x.is())
+        {
+            MutexGuard aGuard( m_aMutex );
+            if( !xModuleFactory.is() && !xModuleFactoryDepr.is() )
+            {
+                xModuleFactory.set( x, UNO_QUERY );
+                xModuleFactoryDepr.set( x, UNO_QUERY );
+            }
+        }
+    }
+    if( xModuleFactory.is() )
+    {
+        return xModuleFactory->createInstanceWithContext( xContext );
+    }
+    if( xModuleFactoryDepr.is() )
+    {
+        return xModuleFactoryDepr->createInstance();
+    }
+
+    return Reference<XInterface >();
+}
+
+Reference<XInterface > SAL_CALL ORegistryFactoryHelper::createInstanceWithArguments(
+    const Sequence<Any>& Arguments )
+{
+    if( !xModuleFactory.is() && !xModuleFactoryDepr.is() )
+    {
+        Reference< XInterface > x( createModuleFactory() );
+        if (x.is())
+        {
+            MutexGuard aGuard( m_aMutex );
+            if( !xModuleFactory.is() && !xModuleFactoryDepr.is() )
+            {
+                xModuleFactory.set( x, UNO_QUERY );
+                xModuleFactoryDepr.set( x, UNO_QUERY );
+            }
+        }
+    }
+    if( xModuleFactoryDepr.is() )
+    {
+        return xModuleFactoryDepr->createInstanceWithArguments( Arguments );
+    }
+    if( xModuleFactory.is() )
+    {
+        SAL_INFO("cppuhelper", "no context ORegistryFactoryHelper::createInstanceWithArgumentsAndContext()!");
+        return xModuleFactory->createInstanceWithArgumentsAndContext( Arguments, Reference< XComponentContext >() );
+    }
+
+    return Reference<XInterface >();
+}
+
+Reference< XInterface > ORegistryFactoryHelper::createInstanceWithArgumentsAndContext(
+    Sequence< Any > const & rArguments,
+    Reference< XComponentContext > const & xContext )
+{
+    if( !xModuleFactory.is() && !xModuleFactoryDepr.is() )
+    {
+        Reference< XInterface > x( createModuleFactory() );
+        if (x.is())
+        {
+            MutexGuard aGuard( m_aMutex );
+            if( !xModuleFactory.is() && !xModuleFactoryDepr.is() )
+            {
+                xModuleFactory.set( x, UNO_QUERY );
+                xModuleFactoryDepr.set( x, UNO_QUERY );
+            }
+        }
+    }
+    if( xModuleFactory.is() )
+    {
+        return xModuleFactory->createInstanceWithArgumentsAndContext( rArguments, xContext );
+    }
+    if( xModuleFactoryDepr.is() )
+    {
+        SAL_INFO_IF(xContext.is(), "cppuhelper", "ignoring context calling ORegistryFactoryHelper::createInstanceWithArgumentsAndContext()!");
+        return xModuleFactoryDepr->createInstanceWithArguments( rArguments );
+    }
+
+    return Reference<XInterface >();
+}
+
+
+Reference< XInterface > ORegistryFactoryHelper::createModuleFactory()
+{
+    OUString aActivatorUrl;
+    OUString aActivatorName;
+    OUString aLocation;
+
+    Reference<XRegistryKey > xActivatorKey = xImplementationKey->openKey(
+        "/UNO/ACTIVATOR" );
+    if( xActivatorKey.is() && xActivatorKey->getValueType() == RegistryValueType_ASCII )
+    {
+        aActivatorUrl = xActivatorKey->getAsciiValue();
+
+        aActivatorName = o3tl::getToken(aActivatorUrl, 0, ':');
+
+        Reference<XRegistryKey > xLocationKey = xImplementationKey->openKey(
+            "/UNO/LOCATION" );
+        if( xLocationKey.is() && xLocationKey->getValueType() == RegistryValueType_ASCII )
+            aLocation = xLocationKey->getAsciiValue();
+    }
+    else
+    {
+        // old style"url"
+        // the location of the program code of the implementation
+        Reference<XRegistryKey > xLocationKey = xImplementationKey->openKey(
+            "/UNO/URL" );
+        // is the key of the right type ?
+        if( xLocationKey.is() && xLocationKey->getValueType() == RegistryValueType_ASCII )
+        {
+            // one implementation found -> try to activate
+            aLocation = xLocationKey->getAsciiValue();
+
+            // search protocol delimiter
+            sal_Int32 nPos = aLocation.indexOf("://");
+            if( nPos != -1 )
+            {
+                aActivatorName = aLocation.subView( 0, nPos );
+                if( aActivatorName == u"java" )
+                    aActivatorName = u"com.sun.star.loader.Java"_ustr;
+                else if( aActivatorName == u"module" )
+                    aActivatorName = u"com.sun.star.loader.SharedLibrary"_ustr;
+                aLocation = aLocation.copy( nPos + 3 );
+            }
+        }
+    }
+
+    Reference< XInterface > xFactory;
+    if( !aActivatorName.isEmpty() )
+    {
+        Reference<XInterface > x = xSMgr->createInstance( aActivatorName );
+        Reference<XImplementationLoader > xLoader( x, UNO_QUERY );
+        if (xLoader.is())
+        {
+            xFactory = xLoader->activate( aImplementationName, aActivatorUrl, aLocation, xImplementationKey );
+        }
+    }
+    return xFactory;
+}
+
+// XServiceInfo
+Sequence< OUString > ORegistryFactoryHelper::getSupportedServiceNames()
+{
+    MutexGuard aGuard( m_aMutex );
+    if( !aServiceNames.hasElements() )
+    {
+        // not yet loaded
+        try
+        {
+            Reference<XRegistryKey > xKey = xImplementationKey->openKey( "UNO/SERVICES" );
+
+            if (xKey.is())
+            {
+                // length of prefix. +1 for the '/' at the end
+                sal_Int32 nPrefixLen = xKey->getKeyName().getLength() + 1;
+
+                // Full qualified names like "IMPLEMENTATIONS/TEST/UNO/SERVICES/com.sun.star..."
+                Sequence<OUString> seqKeys = xKey->getKeyNames();
+                for( OUString & key : asNonConstRange(seqKeys) )
+                    key = key.copy(nPrefixLen);
+
+                aServiceNames = seqKeys;
+            }
+        }
+        catch (InvalidRegistryException &)
+        {
+        }
+    }
+    return aServiceNames;
+}
+
+sal_Bool SAL_CALL ORegistryFactoryHelper::releaseOnNotification()
+{
+    bool retVal= true;
+    if( isOneInstance() && isInstance())
+    {
+        retVal= false;
+    }
+    else if( ! isOneInstance())
+    {
+        // try to delegate
+        if( xModuleFactory.is())
+        {
+            Reference<XUnloadingPreference> xunloading( xModuleFactory, UNO_QUERY);
+            if( xunloading.is())
+                retVal= xunloading->releaseOnNotification();
+        }
+        else if( xModuleFactoryDepr.is())
+        {
+            Reference<XUnloadingPreference> xunloading( xModuleFactoryDepr, UNO_QUERY);
+            if( xunloading.is())
+                retVal= xunloading->releaseOnNotification();
+        }
+    }
+    return retVal;
+}
+
+namespace {
+
+class OFactoryProxyHelper : public WeakImplHelper< XServiceInfo, XSingleServiceFactory,
+                                                    XUnloadingPreference >
+{
+    Reference<XSingleServiceFactory >   xFactory;
+
+public:
+
+    explicit OFactoryProxyHelper( const Reference<XSingleServiceFactory > & rFactory )
+        : xFactory( rFactory )
+        {}
+
+    // XSingleServiceFactory
+    Reference<XInterface > SAL_CALL createInstance() override;
+    Reference<XInterface > SAL_CALL createInstanceWithArguments(const Sequence<Any>& Arguments) override;
+
+    // XServiceInfo
+    OUString SAL_CALL getImplementationName() override;
+    sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+    Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+    //XUnloadingPreference
+    sal_Bool SAL_CALL releaseOnNotification() override;
+
+};
+
+}
+
+// XSingleServiceFactory
+Reference<XInterface > OFactoryProxyHelper::createInstance()
+{
+    return xFactory->createInstance();
+}
+
+// XSingleServiceFactory
+Reference<XInterface > OFactoryProxyHelper::createInstanceWithArguments
+(
+    const Sequence<Any>& Arguments
+)
+{
+    return xFactory->createInstanceWithArguments( Arguments );
+}
+
+// XServiceInfo
+OUString OFactoryProxyHelper::getImplementationName()
+{
+    Reference<XServiceInfo > xInfo( xFactory, UNO_QUERY  );
+    if( xInfo.is() )
+        return xInfo->getImplementationName();
+    return OUString();
+}
+
+// XServiceInfo
+sal_Bool OFactoryProxyHelper::supportsService(const OUString& ServiceName)
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+// XServiceInfo
+Sequence< OUString > OFactoryProxyHelper::getSupportedServiceNames()
+{
+    Reference<XServiceInfo > xInfo( xFactory, UNO_QUERY  );
+    if( xInfo.is() )
+        return xInfo->getSupportedServiceNames();
+    return Sequence< OUString >();
+}
+
+sal_Bool SAL_CALL OFactoryProxyHelper::releaseOnNotification()
+{
+
+    Reference<XUnloadingPreference> pref( xFactory, UNO_QUERY);
+    if( pref.is())
+        return pref->releaseOnNotification();
+    return true;
+}
+
+// global function
+Reference<XSingleServiceFactory > SAL_CALL createSingleFactory(
+    const Reference<XMultiServiceFactory > & rServiceManager,
+    const OUString & rImplementationName,
+    ComponentInstantiation pCreateFunction,
+    const Sequence< OUString > & rServiceNames,
+    rtl_ModuleCount * )
+{
+    return new OFactoryComponentHelper(
+        rServiceManager, rImplementationName, pCreateFunction, nullptr, &rServiceNames, false );
+}
+
+// global function
+Reference<XSingleServiceFactory > SAL_CALL createFactoryProxy(
+    SAL_UNUSED_PARAMETER const Reference<XMultiServiceFactory > &,
+    const Reference<XSingleServiceFactory > & rFactory )
+{
+    return new OFactoryProxyHelper( rFactory );
+}
+
+// global function
+Reference<XSingleServiceFactory > SAL_CALL createOneInstanceFactory(
+    const Reference<XMultiServiceFactory > & rServiceManager,
+    const OUString & rImplementationName,
+    ComponentInstantiation pCreateFunction,
+    const Sequence< OUString > & rServiceNames,
+    rtl_ModuleCount * )
+{
+    return new OFactoryComponentHelper(
+        rServiceManager, rImplementationName, pCreateFunction, nullptr, &rServiceNames, true );
+}
+
+// global function
+Reference<XSingleServiceFactory > SAL_CALL createSingleRegistryFactory(
+    const Reference<XMultiServiceFactory > & rServiceManager,
+    const OUString & rImplementationName,
+    const Reference<XRegistryKey > & rImplementationKey )
+{
+    return new ORegistryFactoryHelper(
+        rServiceManager, rImplementationName, rImplementationKey, false );
+}
+
+// global function
+Reference<XSingleServiceFactory > SAL_CALL createOneInstanceRegistryFactory(
+    const Reference<XMultiServiceFactory > & rServiceManager,
+    const OUString & rImplementationName,
+    const Reference<XRegistryKey > & rImplementationKey )
+{
+    return new ORegistryFactoryHelper(
+        rServiceManager, rImplementationName, rImplementationKey, true );
+}
+
+
+Reference< lang::XSingleComponentFactory > SAL_CALL createSingleComponentFactory(
+    ComponentFactoryFunc fptr,
+    OUString const & rImplementationName,
+    Sequence< OUString > const & rServiceNames,
+    rtl_ModuleCount *)
+{
+    return new OFactoryComponentHelper(
+        Reference< XMultiServiceFactory >(), rImplementationName, nullptr, fptr, &rServiceNames, false );
+}
+
+Reference< lang::XSingleComponentFactory > SAL_CALL createOneInstanceComponentFactory(
+    ComponentFactoryFunc fptr,
+    OUString const & rImplementationName,
+    Sequence< OUString > const & rServiceNames,
+    rtl_ModuleCount *)
+{
+    return new OFactoryComponentHelper(
+        Reference< XMultiServiceFactory >(), rImplementationName, nullptr, fptr, &rServiceNames, true );
+}
+
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */