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

#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