| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| |
| // MARKER(update_precomp.py): autogen include statement, do not remove |
| #include "precompiled_xmloff.hxx" |
| #include "unointerfacetouniqueidentifiermapper.hxx" |
| |
| using ::com::sun::star::uno::Reference; |
| using ::com::sun::star::uno::XInterface; |
| using ::rtl::OUString; |
| |
| namespace comphelper |
| { |
| |
| UnoInterfaceToUniqueIdentifierMapper::UnoInterfaceToUniqueIdentifierMapper() |
| : mnNextId( 1 ) |
| { |
| } |
| |
| /** returns a unique identifier for the given uno object. IF a uno object is |
| registered more than once, the returned identifier is always the same. |
| */ |
| const OUString& UnoInterfaceToUniqueIdentifierMapper::registerReference( const Reference< XInterface >& rInterface ) |
| { |
| IdMap_t::const_iterator aIter; |
| if( findReference( rInterface, aIter ) ) |
| { |
| return (*aIter).first; |
| } |
| else |
| { |
| OUString aId( RTL_CONSTASCII_USTRINGPARAM( "id" ) ); |
| aId += OUString::valueOf( mnNextId++ ); |
| return (*maEntries.insert( IdMap_t::value_type( aId, rInterface ) ).first).first; |
| } |
| } |
| |
| /** registers the given uno object with the given identifier. |
| |
| @returns |
| false, if the given identifier already exists and is not associated with the given interface |
| */ |
| bool UnoInterfaceToUniqueIdentifierMapper::registerReference( const OUString& rIdentifier, const Reference< XInterface >& rInterface ) |
| { |
| IdMap_t::const_iterator aIter; |
| if( findReference( rInterface, aIter ) ) |
| { |
| return rIdentifier != (*aIter).first; |
| } |
| else if( findIdentifier( rIdentifier, aIter ) ) |
| { |
| return false; |
| } |
| else |
| { |
| maEntries.insert( IdMap_t::value_type( rIdentifier, rInterface ) ); |
| |
| // see if this is a reference like something we would generate in the future |
| const sal_Unicode *p = rIdentifier.getStr(); |
| sal_Int32 nLength = rIdentifier.getLength(); |
| |
| // see if the identifier is 'id' followed by a pure integer value |
| if( nLength < 2 || p[0] != 'i' || p[1] != 'd' ) |
| return true; |
| |
| nLength -= 2; |
| p += 2; |
| |
| while(nLength--) |
| { |
| if( (*p < '0') || (*p > '9') ) |
| return true; // a custom id, that will never conflict with genereated id's |
| |
| p++; |
| } |
| |
| // the identifier is a pure integer value |
| // so we make sure we will never generate |
| // an integer value like this one |
| sal_Int32 nId = rIdentifier.copy(2).toInt32(); |
| if( mnNextId <= nId ) |
| mnNextId = nId + 1; |
| |
| return true; |
| } |
| } |
| |
| /** @returns |
| the identifier for the given uno object. If this uno object is not already |
| registered, an empty string is returned |
| */ |
| const OUString& UnoInterfaceToUniqueIdentifierMapper::getIdentifier( const Reference< XInterface >& rInterface ) const |
| { |
| IdMap_t::const_iterator aIter; |
| if( findReference( rInterface, aIter ) ) |
| { |
| return (*aIter).first; |
| } |
| else |
| { |
| static const OUString aEmpty; |
| return aEmpty; |
| } |
| } |
| |
| /** @returns |
| the uno object that is registered with the given identifier. If no uno object |
| is registered with the given identifier, an empty reference is returned. |
| */ |
| const Reference< XInterface >& UnoInterfaceToUniqueIdentifierMapper::getReference( const OUString& rIdentifier ) const |
| { |
| IdMap_t::const_iterator aIter; |
| if( findIdentifier( rIdentifier, aIter ) ) |
| { |
| return (*aIter).second; |
| } |
| else |
| { |
| static const Reference< XInterface > aEmpty; |
| return aEmpty; |
| } |
| } |
| |
| bool UnoInterfaceToUniqueIdentifierMapper::findReference( const Reference< XInterface >& rInterface, IdMap_t::const_iterator& rIter ) const |
| { |
| rIter = maEntries.begin(); |
| const IdMap_t::const_iterator aEnd( maEntries.end() ); |
| while( rIter != aEnd ) |
| { |
| if( (*rIter).second == rInterface ) |
| return true; |
| |
| rIter++; |
| } |
| |
| return false; |
| } |
| |
| bool UnoInterfaceToUniqueIdentifierMapper::findIdentifier( const OUString& rIdentifier, IdMap_t::const_iterator& rIter ) const |
| { |
| rIter = maEntries.find( rIdentifier ); |
| return rIter != maEntries.end(); |
| } |
| |
| } |
| |