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diff --git a/src/libs/modelinglib/qmt/infrastructure/qcompressedfile.h b/src/libs/modelinglib/qmt/infrastructure/qcompressedfile.h
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+++ b/src/libs/modelinglib/qmt/infrastructure/qcompressedfile.h
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+/***************************************************************************
+**
+** Copyright (C) 2015 Jochen Becher
+** Contact: http://www.qt.io/licensing
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company.  For licensing terms and
+** conditions see http://www.qt.io/terms-conditions.  For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#ifndef QCOMPRESSEDDEVICE_H
+#define QCOMPRESSEDDEVICE_H
+
+#include <QIODevice>
+#include <QByteArray>
+
+namespace qmt {
+
+class QCompressedDevice : public QIODevice
+{
+    Q_OBJECT
+
+public:
+    explicit QCompressedDevice(QObject *parent = 0);
+    explicit QCompressedDevice(QIODevice *targetDevice, QObject *parent = 0);
+    ~QCompressedDevice() override;
+
+    QIODevice *targetDevice() const { return m_targetDevice; }
+    void setTargetDevice(QIODevice *targetDevice);
+
+    void close() override;
+
+protected:
+    qint64 readData(char *data, qint64 maxlen) override;
+    qint64 writeData(const char *data, qint64 len) override;
+
+public:
+    qint64 flush();
+
+private:
+    QIODevice *m_targetDevice = 0;
+    QByteArray m_buffer;
+    qint64 m_bytesInBuffer = 0;
+    qint64 m_indexInBuffer = 0;
+};
+
+} // namespace qmt
+
+#endif // QCOMPRESSEDDEVICE_H