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diff --git a/libkcal/calstorage.h b/libkcal/calstorage.h
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+/*
+    This file is part of libkcal.
+    Copyright (c) 2002 Cornelius Schumacher <schumacher@kde.org>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+*/
+#ifndef KCAL_CALSTORAGE_H
+#define KCAL_CALSTORAGE_H
+
+namespace KCal {
+
+class Calendar;
+
+/**
+  This class provides the interface to the storage of a calendar.
+*/
+class CalStorage
+{
+  public:
+    CalStorage( Calendar *calendar )
+    {
+      mCalendar = calendar;
+    }
+    virtual ~CalStorage() {}
+
+    Calendar *calendar() const { return mCalendar; }
+  
+    virtual bool open() = 0;
+    virtual bool load(bool = false ) = 0;
+    virtual bool save() = 0;
+    virtual bool close() = 0;
+
+  private:
+    Calendar *mCalendar;
+};
+
+}
+
+#endif