/****************************************************************************
**
** Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB)
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef ENVIRONMENT_H
#define ENVIRONMENT_H

#include "kdtoolsglobal.h"

#include <QString>
#include <QHash>

QT_BEGIN_NAMESPACE
class QProcess;
class QProcessEnvironment;
QT_END_NAMESPACE

namespace KDUpdater {

class KDTOOLS_EXPORT Environment
{
public:
    static Environment &instance();

    ~Environment() {}

    QString value(const QString &key, const QString &defaultValue = QString()) const;
    void setTemporaryValue(const QString &key, const QString &value);

    QProcessEnvironment applyTo(const QProcessEnvironment &qpe) const;
    void applyTo(QProcess *process);

private:
    Environment() {}

private:
    Q_DISABLE_COPY(Environment)
    QHash<QString, QString> m_tempValues;
};

} // namespace KDUpdater

#endif // ENVIRONMENT_H
