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#ifndef QPROCESS_P_H

#define QPROCESS_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "QtCore/qprocess.h"

#include "QtCore/qstringlist.h"

#include "private/qringbuffer_p.h"

#include "private/qiodevice_p.h"

#ifdef Q_OS_WIN

#include "QtCore/qt_windows.h"

typedef HANDLE Q_PIPE;

#define INVALID_Q_PIPE INVALID_HANDLE_VALUE

#else

typedef int Q_PIPE;

#define INVALID_Q_PIPE -1

#endif

#ifndef QT_NO_PROCESS

QT_BEGIN_NAMESPACE

class QSocketNotifier;

class QWindowsPipeWriter;

class QWinEventNotifier;

class QTimer;

class QProcessPrivate : public QIODevicePrivate

{

public:

    Q_DECLARE_PUBLIC(QProcess)

    struct Channel {

        enum ProcessChannelType {

            Normal = 0,

            PipeSource = 1,

            PipeSink = 2,

            Redirect = 3

            // if you add "= 4" here, increase the number of bits below

        };

        Channel() : process(0), notifier(0), type(Normal), closed(false), append(false)

        {

            pipe[0] = INVALID_Q_PIPE;

            pipe[1] = INVALID_Q_PIPE;

        }

        void clear();

        Channel &operator=(const QString &fileName)

        {

            clear();

            file = fileName;

            type = fileName.isEmpty() ? Normal : Redirect;

            return *this;

        }

        void pipeTo(QProcessPrivate *other)

        {

            clear();

            process = other;

            type = PipeSource;

        }

        void pipeFrom(QProcessPrivate *other)

        {

            clear();

            process = other;

            type = PipeSink;

        }

        QString file;

        QProcessPrivate *process;

        QSocketNotifier *notifier;

        Q_PIPE pipe[2];

        unsigned type : 2;

        bool closed : 1;

        bool append : 1;

    };

    QProcessPrivate();

    virtual ~QProcessPrivate();

    // private slots

    bool _q_canReadStandardOutput();

    bool _q_canReadStandardError();

    bool _q_canWrite();

    bool _q_startupNotification();

    bool _q_processDied();

    void _q_notified();

    QProcess::ProcessChannel processChannel;

    QProcess::ProcessChannelMode processChannelMode;

    QProcess::ProcessError processError;

    QProcess::ProcessState processState;

    QString workingDirectory;

    Q_PID pid;

    int sequenceNumber;

    bool dying;

    bool emittedReadyRead;

    bool emittedBytesWritten;

    Channel stdinChannel;

    Channel stdoutChannel;

    Channel stderrChannel;

    bool createChannel(Channel &channel);

    void closeWriteChannel();

    QString program;

    QStringList arguments;

    QStringList environment;

    QRingBuffer outputReadBuffer;

    QRingBuffer errorReadBuffer;

    QRingBuffer writeBuffer;

    Q_PIPE childStartedPipe[2];

    Q_PIPE deathPipe[2];

    void destroyPipe(Q_PIPE pipe[2]);

    QSocketNotifier *startupSocketNotifier;

    QSocketNotifier *deathNotifier;

    // the wonderful windows notifier

    QTimer *notifier;

    QWindowsPipeWriter *pipeWriter;

    QWinEventNotifier *processFinishedNotifier;

    void startProcess();

#ifdef Q_OS_UNIX

    void execChild(const char *workingDirectory, char **path, char **argv, char **envp);

#endif

    bool processStarted();

    void terminateProcess();

    void killProcess();

    void findExitCode();

#ifdef Q_OS_UNIX

    bool waitForDeadChild();

#endif

#ifdef Q_OS_WIN

    void flushPipeWriter();

    qint64 pipeWriterBytesToWrite() const;

#endif

    static bool startDetached(const QString &program, const QStringList &arguments, const QString &workingDirectory = QString(),

                              qint64 *pid = 0);

    int exitCode;

    QProcess::ExitStatus exitStatus;

    bool crashed;

#ifdef Q_OS_UNIX

    int serial;

#endif

    bool waitForStarted(int msecs = 30000);

    bool waitForReadyRead(int msecs = 30000);

    bool waitForBytesWritten(int msecs = 30000);

    bool waitForFinished(int msecs = 30000);

    bool waitForWrite(int msecs = 30000);

    qint64 bytesAvailableFromStdout() const;

    qint64 bytesAvailableFromStderr() const;

    qint64 readFromStdout(char *data, qint64 maxlen);

    qint64 readFromStderr(char *data, qint64 maxlen);

    qint64 writeToStdin(const char *data, qint64 maxlen);

    void cleanup();

#ifdef Q_OS_UNIX

    static void initializeProcessManager();

#endif

};

QT_END_NAMESPACE

#endif // QT_NO_PROCESS

#endif // QPROCESS_P_H