dumper.h

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Boost Software License - Version 1.0 - August 17th, 2003
 *
 * Permission is hereby granted, free of charge, to any person or organization
 * obtaining a copy of the software and accompanying documentation covered by
 * this license (the "Software") to use, reproduce, display, distribute,
 * execute, and transmit the Software, and to prepare derivative works of the
 * Software, and to permit third-parties to whom the Software is furnished to
 * do so, all subject to the following:
 *
 * The copyright notices in the Software and this entire statement, including
 * the above license grant, this restriction and the following disclaimer,
 * must be included in all copies of the Software, in whole or in part, and
 * all derivative works of the Software, unless such copies or derivative
 * works are solely in the form of machine-executable object code generated by
 * a source language processor.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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 **********************************************************************/
 
#pragma once
 
#include <variant>
#include <QProcess>
#include <QFuture>
#include "dbconfig.h"
 
namespace LC
{
namespace Util
{
    class UTIL_DB_API Dumper : public QObject
    {
        Q_OBJECT
 
        QProcess * const Dumper_;
        QProcess * const Restorer_;
 
        bool HadError_ = false;
 
        int FinishedCount_ = 0;
    public:
        struct Finished {};
        struct Error
        {
            QString What_;
 
            Error (const QString& str)
            : What_ { str }
            {
            }
        };
        using Result_t = std::variant<Finished, Error>;
    private:
        QFutureInterface<Result_t> Iface_;
    public:
        Dumper (const QString& from, const QString& to, QObject* = nullptr);
 
        QFuture<Result_t> GetFuture ();
    private:
        void HandleProcessFinished (QProcess*);
        void HandleProcessError (const QProcess*);
        void ReportResult (const Result_t&);
    };
}
}