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diff --git a/src/assistant/lib/fulltextsearch/qtokenizer_p.h b/src/assistant/lib/fulltextsearch/qtokenizer_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team.
+** All rights reserved.
+**
+** Portion Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+**
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+****************************************************************************/
+
+#ifndef QTOKENIZER_P_H
+#define QTOKENIZER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of the help generator tools. This header file may change from version
+// to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qtoken_p.h"
+#include "qreader_p.h"
+#include "qtokenstream_p.h"
+#include "qclucene_global_p.h"
+
+#include <QtCore/QChar>
+#include <QtCore/QString>
+
+QT_BEGIN_NAMESPACE
+
+class QHELP_EXPORT QCLuceneTokenizer : public QCLuceneTokenStream
+{
+public:
+    QCLuceneTokenizer(const QCLuceneReader &reader);
+    virtual ~QCLuceneTokenizer();
+
+    void close();
+    bool next(QCLuceneToken &token);
+
+protected:
+    friend class QCLuceneStandardTokenizer;
+
+private:
+    QCLuceneTokenizer();
+    QCLuceneReader reader;
+};
+
+class QHELP_EXPORT QCLuceneStandardTokenizer : public QCLuceneTokenizer
+{
+public:
+    QCLuceneStandardTokenizer(const QCLuceneReader &reader);
+    ~QCLuceneStandardTokenizer();
+
+    bool readApostrophe(const QString &string, QCLuceneToken &token);
+    bool readAt(const QString &string, QCLuceneToken &token);
+    bool readCompany(const QString &string, QCLuceneToken &token);
+};
+
+class QCLuceneCharTokenizer : public QCLuceneTokenizer
+{
+
+};
+
+class QCLuceneLetterTokenizer : public QCLuceneCharTokenizer
+{
+
+};
+
+class QCLuceneLowerCaseTokenizer : public QCLuceneLetterTokenizer
+{
+
+};
+
+class QCLuceneWhitespaceTokenizer : public QCLuceneCharTokenizer
+{
+
+};
+
+class QCLuceneKeywordTokenizer : public QCLuceneTokenizer
+{
+
+};
+
+QT_END_NAMESPACE
+
+#endif  // QTOKENIZER_P_H