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diff --git a/hwpfilter/source/hstream.h b/hwpfilter/source/hstream.h
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: hstream.h,v $
+ * $Revision: 1.3 $
+ *
+ * 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 _HSTREAM_H_
+#define _HSTREAM_H_
+
+typedef unsigned char byte;
+/**
+ * Stream class
+ */
+class HStream
+{
+    public:
+        HStream();
+        virtual ~HStream();
+
+/**
+ *
+ */
+        void addData( const byte *buf, int aToAdd);
+/**
+ * Read some byte to buf as given size
+ */
+        int readBytes( byte *buf, int aToRead);
+/**
+ * Skip some byte from stream as given size
+ */
+        int skipBytes( int aToSkip );
+/**
+ * @returns Size of remained stream
+ */
+        int available();
+/**
+ * remove the stream from this object.
+ */
+        void closeInput();
+    private:
+        int size;
+        byte *seq;
+        int pos;
+};
+#endif