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# qprocess.h

This is the verbatim text of the qprocess.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/qprocess.h   3.3.3   edited May 27 2003 $
    **
    ** Implementation of QProcess class
    **
    ** Created : 20000905
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the kernel module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
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    **********************************************************************/

    #ifndef QPROCESS_H
    #define QPROCESS_H

    #ifndef QT_H
    #include "qobject.h"
    #include "qstringlist.h"
    #include "qdir.h"
    #endif // QT_H

    #ifndef QT_NO_PROCESS

    class QProcessPrivate;
    class QMembuf;

    class Q_EXPORT QProcess : public QObject
    {
        Q_OBJECT
    public:
        QProcess( QObject *parent=0, const char *name=0 );
        QProcess( const QString& arg0, QObject *parent=0, const char *name=0 );
        QProcess( const QStringList& args, QObject *parent=0, const char *name=0 );
        ~QProcess();

        // set and get the arguments and working directory
        QStringList arguments() const;
        void clearArguments();
        virtual void setArguments( const QStringList& args );
        virtual void addArgument( const QString& arg );
    #ifndef QT_NO_DIR
        QDir workingDirectory() const;
        virtual void setWorkingDirectory( const QDir& dir );
    #endif

        // set and get the comms wanted
        enum Communication { Stdin=0x01, Stdout=0x02, Stderr=0x04, DupStderr=0x08 };
        void setCommunication( int c );
        int communication() const;

        // start the execution
        virtual bool start( QStringList *env=0 );
        virtual bool launch( const QString& buf, QStringList *env=0  );
        virtual bool launch( const QByteArray& buf, QStringList *env=0  );

        // inquire the status
        bool isRunning() const;
        bool normalExit() const;
        int exitStatus() const;

        // reading
        virtual QByteArray readStdout();
        virtual QByteArray readStderr();
        bool canReadLineStdout() const;
        bool canReadLineStderr() const;
        virtual QString readLineStdout();
        virtual QString readLineStderr();

        // get platform dependent process information
    #if defined(Q_OS_WIN32)
        typedef void* PID;
    #else
        typedef Q_LONG PID;
    #endif
        PID processIdentifier();

        void flushStdin();

    signals:
        void readyReadStdout();
        void readyReadStderr();
        void processExited();
        void wroteToStdin();
        void launchFinished();

    public slots:
        // end the execution
        void tryTerminate() const;
        void kill() const;

        // input
        virtual void writeToStdin( const QByteArray& buf );
        virtual void writeToStdin( const QString& buf );
        virtual void closeStdin();

    protected: // ### or private?
        void connectNotify( const char * signal );
        void disconnectNotify( const char * signal );
    private:
        void setIoRedirection( bool value );
        void setNotifyOnExit( bool value );
        void setWroteStdinConnected( bool value );

        void init();
        void reset();
    #if defined(Q_OS_WIN32)
        uint readStddev( HANDLE dev, char *buf, uint bytes );
    #endif
        QMembuf* membufStdout();
        QMembuf* membufStderr();

    private slots:
        void socketRead( int fd );
        void socketWrite( int fd );
        void timeout();
        void closeStdinLaunch();

    private:
        QProcessPrivate *d;
    #ifndef QT_NO_DIR
        QDir        workingDir;
    #endif
        QStringList _arguments;

        int  exitStat; // exit status
        bool exitNormal; // normal exit?
        bool ioRedirection; // automatically set be (dis)connectNotify
        bool notifyOnExit; // automatically set be (dis)connectNotify
        bool wroteToStdinConnected; // automatically set be (dis)connectNotify

        bool readStdoutCalled;
        bool readStderrCalled;
        int comms;

        friend class QProcessPrivate;
    #if defined(Q_OS_UNIX)
        friend class QProcessManager;
        friend class QProc;
    #endif

    #if defined(Q_DISABLE_COPY) // Disabled copy constructor and operator=
        QProcess( const QProcess & );
        QProcess &operator=( const QProcess & );
    #endif
    };

    #endif // QT_NO_PROCESS

    #endif // QPROCESS_H