Initial import of processlauncher copy from qbs project

Change-Id: I9d646dd1a820e4e69c808998d9f12ff2f5dabe6d
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: hjk <hjk@qt.io>

src/libs/utils/launcherpackets.cpp

@@ -0,0 +1,160 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#include "launcherpackets.h"
+
+#include <QtCore/qbytearray.h>
+#include <QtCore/qcoreapplication.h>
+
+namespace Utils {
+namespace Internal {
+
+LauncherPacket::~LauncherPacket() = default;
+
+QByteArray LauncherPacket::serialize() const
+{
+    QByteArray data;
+    QDataStream stream(&data, QIODevice::WriteOnly);
+    stream << static_cast<int>(0) << static_cast<quint8>(type) << token;
+    doSerialize(stream);
+    stream.device()->reset();
+    stream << static_cast<int>(data.size() - sizeof(int));
+    return data;
+}
+
+void LauncherPacket::deserialize(const QByteArray &data)
+{
+    QDataStream stream(data);
+    doDeserialize(stream);
+}
+
+
+StartProcessPacket::StartProcessPacket(quintptr token)
+    : LauncherPacket(LauncherPacketType::StartProcess, token)
+{
+}
+
+void StartProcessPacket::doSerialize(QDataStream &stream) const
+{
+    stream << command << arguments << workingDir << env;
+}
+
+void StartProcessPacket::doDeserialize(QDataStream &stream)
+{
+    stream >> command >> arguments >> workingDir >> env;
+}
+
+
+StopProcessPacket::StopProcessPacket(quintptr token)
+    : LauncherPacket(LauncherPacketType::StopProcess, token)
+{
+}
+
+void StopProcessPacket::doSerialize(QDataStream &stream) const
+{
+    Q_UNUSED(stream);
+}
+
+void StopProcessPacket::doDeserialize(QDataStream &stream)
+{
+    Q_UNUSED(stream);
+}
+
+
+ProcessErrorPacket::ProcessErrorPacket(quintptr token)
+    : LauncherPacket(LauncherPacketType::ProcessError, token)
+{
+}
+
+void ProcessErrorPacket::doSerialize(QDataStream &stream) const
+{
+    stream << static_cast<quint8>(error) << errorString;
+}
+
+void ProcessErrorPacket::doDeserialize(QDataStream &stream)
+{
+    quint8 e;
+    stream >> e;
+    error = static_cast<QProcess::ProcessError>(e);
+    stream >> errorString;
+}
+
+
+ProcessFinishedPacket::ProcessFinishedPacket(quintptr token)
+    : LauncherPacket(LauncherPacketType::ProcessFinished, token)
+{
+}
+
+void ProcessFinishedPacket::doSerialize(QDataStream &stream) const
+{
+    stream << errorString << stdOut << stdErr
+           << static_cast<quint8>(exitStatus) << static_cast<quint8>(error)
+           << exitCode;
+}
+
+void ProcessFinishedPacket::doDeserialize(QDataStream &stream)
+{
+    stream >> errorString >> stdOut >> stdErr;
+    quint8 val;
+    stream >> val;
+    exitStatus = static_cast<QProcess::ExitStatus>(val);
+    stream >> val;
+    error = static_cast<QProcess::ProcessError>(val);
+    stream >> exitCode;
+}
+
+ShutdownPacket::ShutdownPacket() : LauncherPacket(LauncherPacketType::Shutdown, 0) { }
+void ShutdownPacket::doSerialize(QDataStream &stream) const { Q_UNUSED(stream); }
+void ShutdownPacket::doDeserialize(QDataStream &stream) { Q_UNUSED(stream); }
+
+void PacketParser::setDevice(QIODevice *device)
+{
+    m_stream.setDevice(device);
+    m_sizeOfNextPacket = -1;
+}
+
+bool PacketParser::parse()
+{
+    static const int commonPayloadSize = static_cast<int>(1 + sizeof(quintptr));
+    if (m_sizeOfNextPacket == -1) {
+        if (m_stream.device()->bytesAvailable() < static_cast<int>(sizeof m_sizeOfNextPacket))
+            return false;
+        m_stream >> m_sizeOfNextPacket;
+        if (m_sizeOfNextPacket < commonPayloadSize)
+            throw InvalidPacketSizeException(m_sizeOfNextPacket);
+    }
+    if (m_stream.device()->bytesAvailable() < m_sizeOfNextPacket)
+        return false;
+    quint8 type;
+    m_stream >> type;
+    m_type = static_cast<LauncherPacketType>(type);
+    m_stream >> m_token;
+    m_packetData = m_stream.device()->read(m_sizeOfNextPacket - commonPayloadSize);
+    m_sizeOfNextPacket = -1;
+    return true;
+}
+
+} // namespace Internal
+} // namespace Utils