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diff --git a/desktop/source/deployment/inc/dp_identifier.hxx b/desktop/source/deployment/inc/dp_identifier.hxx
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+++ b/desktop/source/deployment/inc/dp_identifier.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * 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.
+ *
+ ************************************************************************/
+
+#ifndef INCLUDED_DESKTOP_SOURCE_DEPLOYMENT_INC_DP_IDENTIFIER_HXX
+#define INCLUDED_DESKTOP_SOURCE_DEPLOYMENT_INC_DP_IDENTIFIER_HXX
+
+#include "sal/config.h"
+
+#include "boost/optional.hpp"
+#include "com/sun/star/uno/Reference.hxx"
+
+#include "dp_misc_api.hxx"
+
+namespace com { namespace sun { namespace star { namespace deployment {
+    class XPackage;
+} } } }
+namespace rtl { class OUString; }
+
+namespace dp_misc {
+
+/**
+   Generates an identifier from an optional identifier.
+
+   @param optional
+   an optional identifier
+
+   @param fileName
+   a file name
+
+   @return
+   the given optional identifier if present, otherwise a legacy identifier based
+   on the given file name
+*/
+DESKTOP_DEPLOYMENTMISC_DLLPUBLIC ::rtl::OUString generateIdentifier(
+    ::boost::optional< ::rtl::OUString > const & optional,
+    ::rtl::OUString const & fileName);
+
+/**
+   Gets the identifier of a package.
+
+   @param package
+   a non-null package
+
+   @return
+   the explicit identifier of the given package if present, otherwise the
+   implicit legacy identifier of the given package
+
+   @throws com::sun::star::uno::RuntimeException
+*/
+DESKTOP_DEPLOYMENTMISC_DLLPUBLIC ::rtl::OUString getIdentifier(
+    ::com::sun::star::uno::Reference< ::com::sun::star::deployment::XPackage >
+        const & package);
+
+/**
+   Generates a legacy identifier based on a file name.
+
+   @param fileName
+   a file name
+
+   @return
+   a legacy identifier based on the given file name
+*/
+DESKTOP_DEPLOYMENTMISC_DLLPUBLIC ::rtl::OUString generateLegacyIdentifier(
+    ::rtl::OUString const & fileName);
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */