[libcalamares] Shuffle GeoIP into a namespace

- Use CalamaresUtils::GeoIP for GeoIP code
 - Name the public interface parts generically, while the
   implementation details retain GeoIP<foo> names.

src/libcalamares/geoip/Interface.cpp

@@ -0,0 +1,54 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2018, 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 "Interface.h"
+
+#include "utils/Logger.h"
+
+namespace CalamaresUtils::GeoIP
+{
+
+Interface::Interface(const QString& e)
+    : m_element( e )
+{
+}
+
+Interface::~Interface()
+{
+}
+
+RegionZonePair
+splitTZString( const QString& tz )
+{
+    QString timezoneString( tz );
+    timezoneString.remove( '\\' );
+    timezoneString.replace( ' ', '_' );
+
+    QStringList tzParts = timezoneString.split( '/', QString::SkipEmptyParts );
+    if ( tzParts.size() >= 2 )
+    {
+        cDebug() << "GeoIP reporting" << timezoneString;
+        QString region = tzParts.takeFirst();
+        QString zone = tzParts.join( '/' );
+        return RegionZonePair( region, zone );
+    }
+
+    return RegionZonePair( QString(), QString() );
+}
+
+}  // namespace