$ cat guitone/src/monotone/Monotone.h
/***************************************************************************
 *   Copyright (C) 2006 by Thomas Keller                                   *
 *   me@thomaskeller.biz                                                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef MONOTONE_H
#define MONOTONE_H

#include "../model/AutomateCommand.h"
#include <QProcess>
#include <QDir>
#include <QMutex>

class Monotone : public QObject
{
        Q_OBJECT

        public:
                static Monotone* singleton(QObject * parent = 0);
        static bool runCommand(const QString &, const QStringList &, QString &);
        static bool checkProgramVersion(const QString &);
        static bool checkInterfaceVersion(const QString &);
        static const QString RequiredProgramVersion;
        static const QString RequiredInterfaceVersion;
        static const int StdioBufferSize;
        static const int TimeoutWaitForOtherCommand;

                void setup(QDir*);
                virtual ~Monotone();
        QString getWorkspaceDir() const;

        bool triggerCommand(AutomateCommand*, const QStringList &);
        bool triggerCommand(AutomateCommand*, const QStringList &, const QStringList &);

        bool executeCommand(const QStringList &, int &);
        bool executeCommand(const QStringList &, const QStringList &, int &);

        inline QString getOutput() { return output; }

    private:
        Monotone(QObject *);

        bool newCommandSetup();
        void writeStdin(const QStringList &, const QStringList &);
        bool readAndParseStdout(int &);

        QMutex mutex;
        bool timeout;
        QString input;
                QString output;
        QString commandLine;
        AutomateCommand* lastCaller;
                bool isProcessingData;
        bool isCleanExit;
                static Monotone* instance;
                QProcess * process;
        QDir * workDir;

        private slots:
                void readAndProcessCommand();
                void processTerminated(int, QProcess::ExitStatus);
        void startupError(QProcess::ProcessError);
        void timedOut();

        signals:
                void commandFinished(AutomateCommand*);
        void criticalError(const QString &);
};

#endif