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diff --git a/ingen/ClashAvoider.hpp b/ingen/ClashAvoider.hpp
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+/*
+  This file is part of Ingen.
+  Copyright 2007-2015 David Robillard <http://drobilla.net/>
+
+  Ingen is free software: you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free
+  Software Foundation, either version 3 of the License, or any later version.
+
+  Ingen 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 Affero General Public License for details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_CLASHAVOIDER_HPP
+#define INGEN_CLASHAVOIDER_HPP
+
+#include <map>
+
+#include "ingen/ingen.h"
+#include "raul/Path.hpp"
+
+namespace Ingen {
+
+class Store;
+class URI;
+
+/** Maps paths so they do not clash with an existing object in a store.
+ *
+ * @ingroup ingen
+ */
+class INGEN_API ClashAvoider
+{
+public:
+	explicit ClashAvoider(const Store& store);
+
+	const URI        map_uri(const URI& in);
+	const Raul::Path map_path(const Raul::Path& in);
+
+	bool exists(const Raul::Path& path) const;
+
+private:
+	typedef std::map<Raul::Path, unsigned>   Offsets;
+	typedef std::map<Raul::Path, Raul::Path> SymbolMap;
+
+	const Store& _store;
+	Offsets      _offsets;
+	SymbolMap    _symbol_map;
+};
+
+} // namespace Ingen
+
+#endif // INGEN_CLASHAVOIDER_HPP