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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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 "QtCore/qhash.h"
+#include "QtCore/qshareddata.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;
+#if defined(Q_OS_SYMBIAN)
+class RProcess;
+#endif
+
+class QProcessEnvironmentPrivate: public QSharedData
+{
+public:
+#ifdef Q_OS_WIN
+    typedef QString Unit;
+#else
+    typedef QByteArray Unit;
+#endif
+    typedef QHash<Unit, Unit> Hash;
+    Hash hash;
+
+    static QProcessEnvironment fromList(const QStringList &list);
+    QStringList toList() const;
+    QStringList keys() const;
+    void insert(const Hash &hash);
+};
+
+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;
+#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
+    QString nativeArguments;
+#endif
+    QProcessEnvironment 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();
+#if defined(Q_OS_UNIX) && !defined(Q_OS_SYMBIAN)
+    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
+
+#ifdef Q_OS_SYMBIAN
+    bool processLaunched;
+    RProcess* symbianProcess;
+#endif
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_PROCESS
+
+#endif // QPROCESS_P_H