[initramfs] Replace module with C++ implementation

- new implementation handles blank (maps to "all") configuration,
 - allows specifying "$uname" as kernel name, to use `uname -r`,
 - allows specifying a specific kernel.

src/modules/initramfs/InitramfsJob.cpp

@@ -0,0 +1,74 @@
+/* === This file is part of Calamares - <https://github.com/calamares> ===
+ *
+ *   Copyright 2019, Adriaan de Groot <groot@kde.org>
+ *
+ *   Calamares is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Calamares is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "InitramfsJob.h"
+
+#include "utils/CalamaresUtilsSystem.h"
+#include "utils/Logger.h"
+#include "utils/Variant.h"
+
+InitramfsJob::InitramfsJob( QObject* parent )
+    : Calamares::CppJob( parent )
+{
+}
+
+InitramfsJob::~InitramfsJob() {}
+
+
+QString
+InitramfsJob::prettyName() const
+{
+    return tr( "Creating initramfs." );
+}
+
+
+Calamares::JobResult
+InitramfsJob::exec()
+{
+    auto r = CalamaresUtils::System::instance()->targetEnvCommand(
+        { "update-initramfs", "-k", m_kernel, "-c", "-t" }, QString(), QString(), 10 );
+    return r.explainProcess( "update-initramfs", 10 );
+}
+
+
+void
+InitramfsJob::setConfigurationMap( const QVariantMap& configurationMap )
+{
+    m_kernel = CalamaresUtils::getString( configurationMap, "kernel" );
+    if ( m_kernel.isEmpty() )
+    {
+        m_kernel = QStringLiteral( "all" );
+    }
+    else if ( m_kernel == "$uname" )
+    {
+        auto r = CalamaresUtils::System::runCommand(
+            CalamaresUtils::System::RunLocation::RunInHost, { "/bin/uname", "-r" }, QString(), QString(), 3 );
+        if ( r.getExitCode() == 0 )
+        {
+            m_kernel = r.getOutput();
+            cDebug() << "*initramfs* using running kernel" << m_kernel;
+        }
+        else
+        {
+            cWarning() << "*initramfs* could not determine running kernel, using 'all'." << Logger::Continuation
+                       << r.getExitCode() << r.getOutput();
+        }
+    }
+}
+
+CALAMARES_PLUGIN_FACTORY_DEFINITION( InitramfsJobFactory, registerPlugin< InitramfsJob >(); )

src/modules/initramfs/InitramfsJob.h

@@ -0,0 +1,49 @@
+/* === This file is part of Calamares - <https://github.com/calamares> ===
+ *
+ *   Copyright 2019, Adriaan de Groot <groot@kde.org>
+ *
+ *   Calamares is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Calamares is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef INITRAMFSJOB_H
+#define INITRAMFSJOB_H
+
+#include "CppJob.h"
+#include "PluginDllMacro.h"
+#include "utils/PluginFactory.h"
+
+#include <QObject>
+#include <QVariantMap>
+
+class PLUGINDLLEXPORT InitramfsJob : public Calamares::CppJob
+{
+    Q_OBJECT
+
+public:
+    explicit InitramfsJob( QObject* parent = nullptr );
+    virtual ~InitramfsJob() override;
+
+    QString prettyName() const override;
+
+    Calamares::JobResult exec() override;
+
+    void setConfigurationMap( const QVariantMap& configurationMap ) override;
+
+private:
+    QString m_kernel;
+};
+
+CALAMARES_PLUGIN_FACTORY_DECLARATION( InitramfsJobFactory )
+
+#endif  // INITRAMFSJOB_H

src/modules/initramfs/main.py

@@ -1,51 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-#
-# === This file is part of Calamares - <https://github.com/calamares> ===
-#
-#   Copyright 2014, Philip Müller <philm@manjaro.org>
-#   Copyright 2017, Alf Gaida <agaida@siduction.org>
-#   Copyright 2019, Adriaan de Groot <groot@kde.org>
-#
-#   Calamares is free software: you can redistribute it and/or modify
-#   it under the terms of the GNU General Public License as published by
-#   the Free Software Foundation, either version 3 of the License, or
-#   (at your option) any later version.
-#
-#   Calamares is distributed in the hope that it will be useful,
-#   but WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-#   GNU General Public License for more details.
-#
-#   You should have received a copy of the GNU General Public License
-#   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
-
-import libcalamares
-from libcalamares.utils import target_env_call
-
-
-import gettext
-_ = gettext.translation("calamares-python",
-                        localedir=libcalamares.utils.gettext_path(),
-                        languages=libcalamares.utils.gettext_languages(),
-                        fallback=True).gettext
-
-
-def pretty_name():
-    return _("Creating initramfs.")
-
-
-def run():
-    """ Generate an initramfs image.
-
-    :return:
-    """
-    return_code = target_env_call(["update-initramfs", "-k", "all", "-c",
-                                   "-t"])
-
-    if return_code != 0:
-        libcalamares.utils.debug("update-initramfs returned {}".format(return_code))
-        return (
-            _("Failed to run update-initramfs on the target"),
-            _("The exit code was {}").format(return_code)
-            )