Refactor openMode/keepWriteChannelOpen/closeWriteChannel

Change-Id: I4090533875ce1da864b6f8554ce59dbc1392a142
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/processutils.h

@@ -0,0 +1,58 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <QIODevice>
+
+QT_BEGIN_NAMESPACE
+class QProcess;
+QT_END_NAMESPACE
+
+namespace Utils {
+
+enum class ProcessMode {
+    Reader, // This opens in ReadOnly mode if no write data or in ReadWrite mode otherwise,
+            // closes the write channel afterwards
+    Writer  // This opens in ReadWrite mode and doesn't close the write channel
+};
+
+class ProcessStartHandler {
+public:
+    void setProcessMode(ProcessMode mode) { m_processMode = mode; }
+    void setWriteData(const QByteArray &writeData) { m_writeData = writeData; }
+    QIODevice::OpenMode openMode() const;
+    void handleProcessStart(QProcess *process);
+    void handleProcessStarted(QProcess *process);
+
+private:
+    ProcessMode m_processMode = ProcessMode::Reader;
+    QByteArray m_writeData;
+};
+
+
+} // namespace Utils
+
+Q_DECLARE_METATYPE(Utils::ProcessMode);