3e76797384
so we can use it in places where we cannot include comphelper Change-Id: Iba0ba3e4c0dcf0f9d1f09092a77c3b2010ec4f6d Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132732 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
196 lines
6.1 KiB
C++
196 lines
6.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <o3tl/safeint.hxx>
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#include <xmloff/unointerfacetouniqueidentifiermapper.hxx>
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#include <o3tl/string_view.hxx>
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#include <algorithm>
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using namespace ::com::sun::star;
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using css::uno::Reference;
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using css::uno::XInterface;
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namespace comphelper
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{
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UnoInterfaceToUniqueIdentifierMapper::UnoInterfaceToUniqueIdentifierMapper()
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: mnNextId( 1 )
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{
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}
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const OUString& UnoInterfaceToUniqueIdentifierMapper::registerReference( const Reference< XInterface >& rInterface )
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{
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// Be certain that the references we store in our table are to the
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// leading / primary XInterface - cf. findReference
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uno::Reference< uno::XInterface > xRef( rInterface, uno::UNO_QUERY );
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IdMap_t::const_iterator aIter;
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if( findReference( xRef, aIter ) )
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{
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return (*aIter).first;
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}
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else
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{
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OUString aId = "id" + OUString::number( mnNextId++ );
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return (*maEntries.emplace( aId, xRef ).first).first;
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}
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}
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bool UnoInterfaceToUniqueIdentifierMapper::registerReference( const OUString& rIdentifier, const Reference< XInterface >& rInterface )
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{
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IdMap_t::const_iterator aIter;
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// Be certain that the references we store in our table are to the
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// leading / primary XInterface - cf. findReference
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uno::Reference< uno::XInterface > xRef( rInterface, uno::UNO_QUERY );
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if( findReference( xRef, aIter ) )
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{
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return rIdentifier != (*aIter).first;
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}
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else if( findIdentifier( rIdentifier, aIter ) || findReserved( rIdentifier ) )
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{
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return false;
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}
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else
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{
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maEntries.insert( IdMap_t::value_type( rIdentifier, xRef ) );
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// see if this is a reference like something we would generate in the future
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const sal_Unicode *p = rIdentifier.getStr();
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sal_Int32 nLength = rIdentifier.getLength();
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// see if the identifier is 'id' followed by a pure integer value
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if( nLength < 2 || p[0] != 'i' || p[1] != 'd' )
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return true;
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nLength -= 2;
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p += 2;
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while(nLength--)
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{
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if( (*p < '0') || (*p > '9') )
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return true; // a custom id, that will never conflict with generated id's
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p++;
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}
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// the identifier is a pure integer value
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// so we make sure we will never generate
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// an integer value like this one
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sal_Int32 nId = o3tl::toInt32(rIdentifier.subView(2));
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if (nId > 0 && mnNextId <= o3tl::make_unsigned(nId))
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mnNextId = nId + 1;
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return true;
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}
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}
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const OUString& UnoInterfaceToUniqueIdentifierMapper::getIdentifier( const Reference< XInterface >& rInterface ) const
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{
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IdMap_t::const_iterator aIter;
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if( findReference( rInterface, aIter ) )
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{
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return (*aIter).first;
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}
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else
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{
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static const OUString aEmpty;
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return aEmpty;
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}
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}
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const Reference< XInterface >& UnoInterfaceToUniqueIdentifierMapper::getReference( const OUString& rIdentifier ) const
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{
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IdMap_t::const_iterator aIter;
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if( findIdentifier( rIdentifier, aIter ) )
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{
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return (*aIter).second;
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}
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else
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{
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static const Reference< XInterface > aEmpty;
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return aEmpty;
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}
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}
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bool UnoInterfaceToUniqueIdentifierMapper::findReference( const Reference< XInterface >& rInterface, IdMap_t::const_iterator& rIter ) const
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{
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uno::Reference< uno::XInterface > xRef( rInterface, uno::UNO_QUERY );
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const IdMap_t::const_iterator aEnd( maEntries.end() );
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rIter = std::find_if(maEntries.begin(), aEnd, [&xRef](const IdMap_t::value_type& rItem) {
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// The Reference == operator, does a repeated queryInterface on
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// this to ensure we got the right XInterface base-class. However,
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// we can be sure that this has been done already by the time we
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// get to here.
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return rItem.second.get() == xRef.get();
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});
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return rIter != aEnd;
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}
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bool UnoInterfaceToUniqueIdentifierMapper::findIdentifier( const OUString& rIdentifier, IdMap_t::const_iterator& rIter ) const
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{
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rIter = maEntries.find( rIdentifier );
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return rIter != maEntries.end();
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}
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bool UnoInterfaceToUniqueIdentifierMapper::reserveIdentifier( const OUString& rIdentifier )
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{
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if ( findReserved( rIdentifier ) )
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return false;
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maReserved.push_back( rIdentifier );
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return true;
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}
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bool UnoInterfaceToUniqueIdentifierMapper::registerReservedReference(
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const OUString& rIdentifier,
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const css::uno::Reference< css::uno::XInterface >& rInterface )
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{
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Reserved_t::const_iterator aIt;
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if ( !findReserved( rIdentifier, aIt ) )
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return false;
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Reserved_t::iterator aRemoveIt( maReserved.begin() + ( aIt - maReserved.begin() ) );
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maReserved.erase( aRemoveIt );
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registerReference( rIdentifier, rInterface );
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return true;
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}
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bool UnoInterfaceToUniqueIdentifierMapper::findReserved( const OUString& rIdentifier ) const
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{
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Reserved_t::const_iterator aDummy;
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return findReserved( rIdentifier, aDummy );
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}
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bool UnoInterfaceToUniqueIdentifierMapper::findReserved(
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const OUString& rIdentifier,
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Reserved_t::const_iterator& rIter ) const
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{
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rIter = std::find( maReserved.begin(), maReserved.end(), rIdentifier );
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return rIter != maReserved.end();
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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