Fill the KERNEL metadata for Arch Linux

image_creator/os_type/archlinux.py

+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2014 GRNET S.A.
+#
+# This program 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.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""This module hosts OS-specific code for Arch Linux."""
+
+from image_creator.os_type.linux import Linux
+
+import re
+
+
+class Archlinux(Linux):
+    """OS class for Arch Linux"""
+
+    def _do_collect_metadata(self):
+        """Collect metadata about the OS"""
+        super(Archlinux, self)._do_collect_metadata()
+
+        local_be = '/var/lib/pacman/local'
+
+        if not self.image.g.is_dir(local_be):
+            self.out.warn("Directory: `%s' does not exist!" % local_be)
+            return
+
+        kernel_regexp = re.compile(r'linux-(lts-)?(\d+[\.\d+]*-\d+)')
+        for f in self.image.g.readdir(local_be):
+            match = kernel_regexp.match(f['name'])
+            if match:
+                lts = match.group(1) is not None
+                version = match.group(2)
+                self.meta['KERNEL'] = "%s%s" % (version, " LTS" if lts else "")
+
+# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :