move ifupdown2/* .

ifupdown2 code was one level deeper because ifupdown2 initially
had ifupdown2 and ifupdown2-addons as two separate packages.
Since they were combined into one package, it makes sense to
move all combined code under the top level directory

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>

ifupdown/template.py

@@ -0,0 +1,59 @@
+#!/usr/bin/python
+#
+# Copyright 2014 Cumulus Networks, Inc. All rights reserved.
+# Author: Roopa Prabhu, roopa@cumulusnetworks.com
+#
+# template --
+#    helper class to render templates
+#
+
+import logging
+import traceback
+from utils import *
+
+class templateEngine():
+    """ provides template rendering methods """
+
+    def __init__(self, template_engine, template_lookuppath=None):
+        self.logger = logging.getLogger('ifupdown.' +
+                    self.__class__.__name__)
+        self.tclass = None
+        self.tclassargs = {}
+        self.render = self._render_default
+        if template_engine == 'mako':
+            try:
+                self.tclass = utils.importName('mako.template', 'Template')
+            except Exception, e:
+                self.logger.warn('unable to load template engine %s (%s)'
+                        %(template_engine, str(e)))
+                pass
+            if template_lookuppath:
+                try:
+                    self.logger.debug('setting template lookuppath to %s'
+                            %template_lookuppath)
+                    lc = utils.importName('mako.lookup', 'TemplateLookup')
+                    self.tclassargs['lookup'] = lc(
+                                directories=template_lookuppath.split(':'))
+                except Exception, e:
+                    self.logger.warn('unable to set template lookup path' +
+                                ' %s (%s)' %(template_lookuppath, str(e)))
+                    pass
+            self.render = self._render_mako
+        else:
+            self.logger.info('skip template processing.., ' +
+                    'template engine not found')
+
+    def _render_default(self, textdata):
+        return textdata
+
+    def _render_mako(self, textdata):
+        """ render textdata passed as argument using mako
+
+        Returns rendered textdata """
+
+        if not self.tclass:
+            return textdata
+        self.logger.info('template processing on interfaces file ...')
+        t = self.tclass(text=textdata, output_encoding='utf-8',
+                     lookup=self.tclassargs.get('lookup'))
+        return t.render()