RemoteLinux: Add an rsync deploy step

Using rsync enables proper incremental deployment and is particularly
helpful when larger files are involved.
We check whether rsync works as part of the device test. If it does, it
becomes the default deploy step, otherwise we fall back to SFTP.

Change-Id: I6ab938ccd5acd7e0cbe07b90b6938dccad19bba5
Reviewed-by: hjk <hjk@qt.io>

src/plugins/remotelinux/rsyncdeploystep.h

@@ -0,0 +1,65 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 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 "abstractremotelinuxdeploystep.h"
+#include "remotelinux_export.h"
+
+namespace QSsh { class SshConnection; }
+
+namespace RemoteLinux {
+
+class RsyncCommandLine
+{
+public:
+    RsyncCommandLine(const QStringList &o, const QString &h) : options(o), remoteHostSpec(h) {}
+    const QStringList options;
+    const QString remoteHostSpec;
+};
+
+class REMOTELINUX_EXPORT RsyncDeployStep : public AbstractRemoteLinuxDeployStep
+{
+    Q_OBJECT
+
+public:
+    explicit RsyncDeployStep(ProjectExplorer::BuildStepList *bsl);
+    ~RsyncDeployStep() override;
+
+    static Core::Id stepId();
+    static QString displayName();
+
+    static RsyncCommandLine rsyncCommand(const QSsh::SshConnection &sshConnection);
+
+private:
+    AbstractRemoteLinuxDeployService *deployService() const override;
+
+    bool initInternal(QString *error = nullptr) override;
+
+    class RsyncDeployStepPrivate;
+    RsyncDeployStepPrivate * const d;
+};
+
+} // namespace RemoteLinux