/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the Qt3Support module of the Qt Toolkit.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** 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 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef Q3PROCESS_H

#define Q3PROCESS_H

#include <QtCore/qobject.h>

#include <QtCore/qstringlist.h>

#include <QtCore/qdir.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Qt3SupportLight)

#ifndef QT_NO_PROCESS

class Q3ProcessPrivate;

class Q3Membuf;

class Q_COMPAT_EXPORT Q3Process : public QObject

{

    Q_OBJECT

public:

    Q3Process( QObject *parent=0, const char *name=0 );

    Q3Process( const QString& arg0, QObject *parent=0, const char *name=0 );

    Q3Process( const QStringList& args, QObject *parent=0, const char *name=0 );

    ~Q3Process();

    // 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) || defined(Q_OS_WINCE)

    typedef void* PID;

#else

    typedef Q_LONG PID;

#endif

    PID processIdentifier();

    void flushStdin();

Q_SIGNALS:

    void readyReadStdout();

    void readyReadStderr();

    void processExited();

    void wroteToStdin();

    void launchFinished();

public Q_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) || defined(Q_OS_WINCE)

    uint readStddev( Qt::HANDLE dev, char *buf, uint bytes );

#endif

    Q3Membuf* membufStdout();

    Q3Membuf* membufStderr();

private Q_SLOTS:

    void socketRead( int fd );

    void socketWrite( int fd );

    void timeout();

    void closeStdinLaunch();

private:

    Q3ProcessPrivate *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 Q3ProcessPrivate;

#if defined(Q_OS_UNIX)

    friend class Q3ProcessManager;

    friend class QProc;

#endif

#if defined(Q_DISABLE_COPY) // Disabled copy constructor and operator=

    Q3Process( const Q3Process & );

    Q3Process &operator=( const Q3Process & );

#endif

};

#endif // QT_NO_PROCESS

QT_END_NAMESPACE

QT_END_HEADER

#endif // Q3PROCESS_H