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diff --git a/package/inc/CRC32.hxx b/package/inc/CRC32.hxx
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+/*************************************************************************
+ *
+ *  $RCSfile: CRC32.hxx,v $
+ *
+ *  $Revision: 1.1 $
+ *
+ *  last change: $Author: mtg $ $Date: 2000-11-13 13:37:57 $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 by Sun Microsystems, Inc.
+ *  901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source License Version 1.1 (the "License"); You may not use this file
+ *  except in compliance with the License. You may obtain a copy of the
+ *  License at http://www.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+#ifndef _CRC32_HXX
+#define _CRC32_HXX
+
+#ifndef _CPPUHELPER_IMPLBASE1_HXX_
+#include <cppuhelper/implbase1.hxx>
+#endif
+
+#ifndef _ZLIB_H
+#include <external/zlib/zlib.h>
+#endif
+
+#ifndef _COM_SUN_STAR_PACKAGE_XCHECKSUM_HPP_
+#include <com/sun/star/package/XChecksum.hpp>
+#endif
+
+#ifndef _TOOLS_DEBUG_HXX
+#include <tools/debug.hxx>
+#endif
+
+class CRC32 : public cppu::WeakImplHelper1<com::sun::star::package::XChecksum>
+{
+private:
+    sal_uInt32 nCRC;
+public:
+    CRC32();
+    virtual ~CRC32();
+    virtual void SAL_CALL updateByte (sal_Int8 nByte)
+        throw(::com::sun::star::uno::RuntimeException);
+    virtual void SAL_CALL updateSegment(const ::com::sun::star::uno::Sequence< sal_Int8 > &b, sal_Int32 off, sal_Int32 len)
+        throw(::com::sun::star::uno::RuntimeException);
+    virtual void SAL_CALL update(const ::com::sun::star::uno::Sequence< sal_Int8 > &b)
+        throw(::com::sun::star::uno::RuntimeException);
+    virtual sal_Int32 SAL_CALL getValue()
+        throw(::com::sun::star::uno::RuntimeException);
+    virtual void SAL_CALL reset()
+        throw(::com::sun::star::uno::RuntimeException);
+};
+
+#endif