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

#ifndef QPROCESS_H

#define QPROCESS_H

#include <QtCore/qiodevice.h>

#include <QtCore/qstringlist.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

#ifndef QT_NO_PROCESS

#if (!defined(Q_OS_WIN32) && !defined(Q_OS_WINCE)) || defined(qdoc)

typedef qint64 Q_PID;

#else

QT_END_NAMESPACE

typedef struct _PROCESS_INFORMATION *Q_PID;

QT_BEGIN_NAMESPACE

#endif

class QProcessPrivate;

class Q_CORE_EXPORT QProcess : public QIODevice

{

    Q_OBJECT

public:

    enum ProcessError {

        FailedToStart, //### file not found, resource error

        Crashed,

        Timedout,

        ReadError,

        WriteError,

        UnknownError

    };

    enum ProcessState {

        NotRunning,

        Starting,

        Running

    };

    enum ProcessChannel {

        StandardOutput,

        StandardError

    };

    enum ProcessChannelMode {

        SeparateChannels,

        MergedChannels,

        ForwardedChannels

    };

    enum ExitStatus {

        NormalExit,

        CrashExit

    };

    explicit QProcess(QObject *parent = 0);

    virtual ~QProcess();

    void start(const QString &program, const QStringList &arguments, OpenMode mode = ReadWrite);

    void start(const QString &program, OpenMode mode = ReadWrite);

    ProcessChannelMode readChannelMode() const;

    void setReadChannelMode(ProcessChannelMode mode);

    ProcessChannelMode processChannelMode() const;

    void setProcessChannelMode(ProcessChannelMode mode);

    ProcessChannel readChannel() const;

    void setReadChannel(ProcessChannel channel);

    void closeReadChannel(ProcessChannel channel);

    void closeWriteChannel();

    void setStandardInputFile(const QString &fileName);

    void setStandardOutputFile(const QString &fileName, OpenMode mode = Truncate);

    void setStandardErrorFile(const QString &fileName, OpenMode mode = Truncate);

    void setStandardOutputProcess(QProcess *destination);

    QString workingDirectory() const;

    void setWorkingDirectory(const QString &dir);

    void setEnvironment(const QStringList &environment);

    QStringList environment() const;

    QProcess::ProcessError error() const;

    QProcess::ProcessState state() const;

    // #### Qt 5: Q_PID is a pointer on Windows and a value on Unix

    Q_PID pid() const;

    bool waitForStarted(int msecs = 30000);

    bool waitForReadyRead(int msecs = 30000);

    bool waitForBytesWritten(int msecs = 30000);

    bool waitForFinished(int msecs = 30000);

    QByteArray readAllStandardOutput();

    QByteArray readAllStandardError();

    int exitCode() const;

    QProcess::ExitStatus exitStatus() const;

    // QIODevice

    qint64 bytesAvailable() const;

    qint64 bytesToWrite() const;

    bool isSequential() const;

    bool canReadLine() const;

    void close();

    bool atEnd() const;

    static int execute(const QString &program, const QStringList &arguments);

    static int execute(const QString &program);

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

                              qint64 *pid = 0);

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

    static bool startDetached(const QString &program);

    static QStringList systemEnvironment();

public Q_SLOTS:

    void terminate();

    void kill();

Q_SIGNALS:

    void started();

    void finished(int exitCode);

    void finished(int exitCode, QProcess::ExitStatus exitStatus);

    void error(QProcess::ProcessError error);

    void stateChanged(QProcess::ProcessState state);

    void readyReadStandardOutput();

    void readyReadStandardError();

protected:

    void setProcessState(ProcessState state);

    virtual void setupChildProcess();

    // QIODevice

    qint64 readData(char *data, qint64 maxlen);

    qint64 writeData(const char *data, qint64 len);

private:

    Q_DECLARE_PRIVATE(QProcess)

    Q_DISABLE_COPY(QProcess)

    Q_PRIVATE_SLOT(d_func(), bool _q_canReadStandardOutput())

    Q_PRIVATE_SLOT(d_func(), bool _q_canReadStandardError())

    Q_PRIVATE_SLOT(d_func(), bool _q_canWrite())

    Q_PRIVATE_SLOT(d_func(), bool _q_startupNotification())

    Q_PRIVATE_SLOT(d_func(), bool _q_processDied())

    Q_PRIVATE_SLOT(d_func(), void _q_notified())

    friend class QProcessManager;

};

#endif // QT_NO_PROCESS

QT_END_NAMESPACE

QT_END_HEADER

#endif // QPROCESS_H