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Diffstat (limited to 'unotools/source/config/configvaluecontainer.cxx')
| -rw-r--r-- | unotools/source/config/configvaluecontainer.cxx | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/unotools/source/config/configvaluecontainer.cxx b/unotools/source/config/configvaluecontainer.cxx new file mode 100644 index 000000000..10abeaf12 --- /dev/null +++ b/unotools/source/config/configvaluecontainer.cxx @@ -0,0 +1,304 @@ +/* -*- 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 <sal/log.hxx> +#include <unotools/configvaluecontainer.hxx> +#include <unotools/confignode.hxx> +#include <uno/data.h> +#include <algorithm> +#include <utility> +#include <vector> + +namespace utl +{ + + using namespace ::com::sun::star::uno; + using namespace ::com::sun::star::lang; + + //= NodeValueAccessor + + namespace { + + enum class LocationType + { + SimplyObjectInstance, + Unbound + }; + + } + + struct NodeValueAccessor + { + private: + OUString sRelativePath; // the relative path of the node + LocationType eLocationType; // the type of location where the value is stored + void* pLocation; // the pointer to the location + Type aDataType; // the type object pointed to by pLocation + + public: + explicit NodeValueAccessor( OUString _aNodePath ); + + void bind( void* _pLocation, const Type& _rType ); + + bool isBound( ) const { return ( LocationType::Unbound != eLocationType ) && ( nullptr != pLocation ); } + const OUString& getPath( ) const { return sRelativePath; } + LocationType getLocType( ) const { return eLocationType; } + void* getLocation( ) const { return pLocation; } + const Type& getDataType( ) const { return aDataType; } + + bool operator == ( const NodeValueAccessor& rhs ) const; + }; + + NodeValueAccessor::NodeValueAccessor( OUString _aNodePath ) + :sRelativePath(std::move( _aNodePath )) + ,eLocationType( LocationType::Unbound ) + ,pLocation( nullptr ) + { + } + + bool NodeValueAccessor::operator == ( const NodeValueAccessor& rhs ) const + { + return ( sRelativePath == rhs.sRelativePath ) + && ( eLocationType == rhs.eLocationType ) + && ( pLocation == rhs.pLocation ); + } + + void NodeValueAccessor::bind( void* _pLocation, const Type& _rType ) + { + SAL_WARN_IF(isBound(), "unotools.config", "NodeValueAccessor::bind: already bound!"); + + eLocationType = LocationType::SimplyObjectInstance; + pLocation = _pLocation; + aDataType = _rType; + } + + static + void lcl_copyData( const NodeValueAccessor& _rAccessor, const Any& _rData, ::osl::Mutex& _rMutex ) + { + ::osl::MutexGuard aGuard( _rMutex ); + + SAL_WARN_IF(!_rAccessor.isBound(), "unotools.config", "::utl::lcl_copyData: invalid accessor!"); + switch ( _rAccessor.getLocType() ) + { + case LocationType::SimplyObjectInstance: + { + if ( _rData.hasValue() ) + { + // assign the value + bool bSuccess = uno_type_assignData( + _rAccessor.getLocation(), _rAccessor.getDataType().getTypeLibType(), + const_cast< void* >( _rData.getValue() ), _rData.getValueType().getTypeLibType(), + cpp_queryInterface, cpp_acquire, cpp_release + ); + SAL_WARN_IF(!bSuccess, "unotools.config", + "::utl::lcl_copyData( Accessor, Any ): could not assign the data (node path: \"" << _rAccessor.getPath() << "\""); + } + else { + SAL_INFO("unotools.config", "::utl::lcl_copyData: NULL value lost!"); + } + } + break; + default: + break; + } + } + + static + void lcl_copyData( Any& _rData, const NodeValueAccessor& _rAccessor, ::osl::Mutex& _rMutex ) + { + ::osl::MutexGuard aGuard( _rMutex ); + + SAL_WARN_IF(!_rAccessor.isBound(), "unotools.config", "::utl::lcl_copyData: invalid accessor!" ); + switch ( _rAccessor.getLocType() ) + { + case LocationType::SimplyObjectInstance: + // a simple setValue... + _rData.setValue( _rAccessor.getLocation(), _rAccessor.getDataType() ); + break; + + default: + break; + } + } + + //= functors on NodeValueAccessor instances + + namespace { + + /// base class for functors synchronizing between exchange locations and config sub nodes + struct SubNodeAccess + { + protected: + const OConfigurationNode& m_rRootNode; + ::osl::Mutex& m_rMutex; + + public: + SubNodeAccess( const OConfigurationNode& _rRootNode, ::osl::Mutex& _rMutex ) + :m_rRootNode( _rRootNode ) + ,m_rMutex( _rMutex ) + { + } + }; + + struct UpdateFromConfig : public SubNodeAccess + { + public: + UpdateFromConfig( const OConfigurationNode& _rRootNode, ::osl::Mutex& _rMutex ) : SubNodeAccess( _rRootNode, _rMutex ) { } + + void operator() ( NodeValueAccessor const & _rAccessor ) + { + ::utl::lcl_copyData( _rAccessor, m_rRootNode.getNodeValue( _rAccessor.getPath( ) ), m_rMutex ); + } + }; + + struct UpdateToConfig : public SubNodeAccess + { + public: + UpdateToConfig( const OConfigurationNode& _rRootNode, ::osl::Mutex& _rMutex ) : SubNodeAccess( _rRootNode, _rMutex ) { } + + void operator() ( NodeValueAccessor const & _rAccessor ) + { + Any aNewValue; + lcl_copyData( aNewValue, _rAccessor, m_rMutex ); + m_rRootNode.setNodeValue( _rAccessor.getPath( ), aNewValue ); + } + }; + + } + + //= OConfigurationValueContainerImpl + + struct OConfigurationValueContainerImpl + { + Reference< XComponentContext > xORB; // the service factory + ::osl::Mutex& rMutex; // the mutex for accessing the data containers + OConfigurationTreeRoot aConfigRoot; // the configuration node we're accessing + + std::vector<NodeValueAccessor> aAccessors; // the accessors to the node values + + OConfigurationValueContainerImpl( const Reference< XComponentContext >& _rxORB, ::osl::Mutex& _rMutex ) + :xORB( _rxORB ) + ,rMutex( _rMutex ) + { + } + }; + + //= OConfigurationValueContainer + + OConfigurationValueContainer::OConfigurationValueContainer( + const Reference< XComponentContext >& _rxORB, ::osl::Mutex& _rAccessSafety, + const char* _pConfigLocation, const sal_Int32 _nLevels ) + :m_pImpl( new OConfigurationValueContainerImpl( _rxORB, _rAccessSafety ) ) + { + implConstruct( OUString::createFromAscii( _pConfigLocation ), _nLevels ); + } + + OConfigurationValueContainer::~OConfigurationValueContainer() + { + } + + void OConfigurationValueContainer::implConstruct( const OUString& _rConfigLocation, + const sal_Int32 _nLevels ) + { + SAL_WARN_IF(m_pImpl->aConfigRoot.isValid(), "unotools.config", "OConfigurationValueContainer::implConstruct: already initialized!"); + + // create the configuration node we're about to work with + m_pImpl->aConfigRoot = OConfigurationTreeRoot::createWithComponentContext( + m_pImpl->xORB, + _rConfigLocation, + _nLevels + ); + SAL_WARN_IF(!m_pImpl->aConfigRoot.isValid(), "unotools.config", + "Could not access the configuration node located at " << _rConfigLocation); + } + + void OConfigurationValueContainer::registerExchangeLocation( const char* _pRelativePath, + void* _pContainer, const Type& _rValueType ) + { + // checks... + SAL_WARN_IF(!_pContainer, "unotools.config", + "OConfigurationValueContainer::registerExchangeLocation: invalid container location!"); + SAL_WARN_IF(!( (TypeClass_CHAR == _rValueType.getTypeClass( ) ) + || ( TypeClass_BOOLEAN == _rValueType.getTypeClass( ) ) + || ( TypeClass_BYTE == _rValueType.getTypeClass( ) ) + || ( TypeClass_SHORT == _rValueType.getTypeClass( ) ) + || ( TypeClass_LONG == _rValueType.getTypeClass( ) ) + || ( TypeClass_DOUBLE == _rValueType.getTypeClass( ) ) + || ( TypeClass_STRING == _rValueType.getTypeClass( ) ) + || ( TypeClass_SEQUENCE == _rValueType.getTypeClass( ) )), + "unotools.config", + "OConfigurationValueContainer::registerExchangeLocation: invalid type!" ); + + // build an accessor for this container + NodeValueAccessor aNewAccessor( OUString::createFromAscii( _pRelativePath ) ); + aNewAccessor.bind( _pContainer, _rValueType ); + + // insert it into our structure + implRegisterExchangeLocation( aNewAccessor ); + } + + void OConfigurationValueContainer::read( ) + { + std::for_each( + m_pImpl->aAccessors.begin(), + m_pImpl->aAccessors.end(), + UpdateFromConfig( m_pImpl->aConfigRoot, m_pImpl->rMutex ) + ); + } + + void OConfigurationValueContainer::commit() + { + // write the current values in the exchange locations + std::for_each( + m_pImpl->aAccessors.begin(), + m_pImpl->aAccessors.end(), + UpdateToConfig( m_pImpl->aConfigRoot, m_pImpl->rMutex ) + ); + + // commit the changes done + m_pImpl->aConfigRoot.commit( ); + } + + void OConfigurationValueContainer::implRegisterExchangeLocation( const NodeValueAccessor& _rAccessor ) + { + // some checks + SAL_WARN_IF(m_pImpl->aConfigRoot.isValid() && !m_pImpl->aConfigRoot.hasByHierarchicalName(_rAccessor.getPath()), + "unotools.config", + "OConfigurationValueContainer::implRegisterExchangeLocation: invalid relative path!" ); + + // another check (should be the first container for this node) + SAL_WARN_IF(!(m_pImpl->aAccessors.end() == ::std::find( + m_pImpl->aAccessors.begin(), + m_pImpl->aAccessors.end(), + _rAccessor)), + "unotools.config", + "OConfigurationValueContainer::implRegisterExchangeLocation: already registered a container for this subnode!" ); + + // remember the accessor + m_pImpl->aAccessors.push_back( _rAccessor ); + + // and initially fill the value + lcl_copyData( _rAccessor, m_pImpl->aConfigRoot.getNodeValue( _rAccessor.getPath() ), m_pImpl->rMutex ); + } + +} // namespace utl + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |