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diff --git a/nxcomp/TextCompressor.h b/nxcomp/TextCompressor.h
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+++ b/nxcomp/TextCompressor.h
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+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/.         */
+/*                                                                        */
+/* NXCOMP, NX protocol compression and NX extensions to this software     */
+/* are copyright of NoMachine. Redistribution and use of the present      */
+/* software is allowed according to terms specified in the file LICENSE   */
+/* which comes in the source distribution.                                */
+/*                                                                        */
+/* Check http://www.nomachine.com/licensing.html for applicability.       */
+/*                                                                        */
+/* NX and NoMachine are trademarks of NoMachine S.r.l.                    */
+/*                                                                        */
+/* All rights reserved.                                                   */
+/*                                                                        */
+/**************************************************************************/
+
+#ifndef TextCompressor_H
+#define TextCompressor_H
+
+#include "CharCache.h"
+
+class EncodeBuffer;
+class DecodeBuffer;
+
+class TextCompressor
+{
+ public:
+  TextCompressor(CharCache* cache, unsigned int cacheSize):
+    cache_(cache),
+    cacheSize_(cacheSize),
+    key_(0)
+  {
+  }
+
+  void encodeChar(unsigned char ch, EncodeBuffer &);
+  unsigned char decodeChar(DecodeBuffer &);
+  void reset(unsigned int newKey = 0)
+  {
+    key_ = newKey;
+  }
+
+ private:
+  CharCache* cache_;
+  unsigned int cacheSize_;
+  unsigned int key_;
+};
+
+#endif /* TextCompressor_H */