1 files changed, 171 insertions, 0 deletions
diff --git a/xmloff/source/core/unointerfacetouniqueidentifiermapper.cxx b/xmloff/source/core/unointerfacetouniqueidentifiermapper.cxx
new file mode 100644
index 000000000000..7026ae8cf2e9
--- /dev/null
+++ b/xmloff/source/core/unointerfacetouniqueidentifiermapper.cxx
@@ -0,0 +1,171 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 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();
+}
+
+}
+