Forgot the new file

openlp/core/lib/kernel.py

@@ -0,0 +1,78 @@
+# -*- coding: utf-8 -*-
+# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
+
+###############################################################################
+# OpenLP - Open Source Lyrics Projection                                      #
+# --------------------------------------------------------------------------- #
+# Copyright (c) 2008-2013 Raoul Snyman                                        #
+# Portions copyright (c) 2008-2013 Tim Bentley, Gerald Britton, Jonathan      #
+# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub,      #
+# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer.   #
+# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru,          #
+# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith,             #
+# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock,              #
+# Frode Woldsund, Martin Zibricky, Patrick Zimmermann                         #
+# --------------------------------------------------------------------------- #
+# 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; version 2 of the License.                              #
+#                                                                             #
+# 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, write to the Free Software Foundation, Inc., 59  #
+# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
+###############################################################################
+"""
+Provide plugin management
+"""
+import os
+import sys
+import logging
+
+log = logging.getLogger(__name__)
+
+class Kernel(object):
+    """
+    This is the Plugin manager, which loads all the plugins,
+    and executes all the hooks, as and when necessary.
+    """
+    log.info(u'Kernel loaded')
+    __instance__ = None
+
+
+    def __new__(cls):
+        if not cls.__instance__:
+            cls.__instance__ = object.__new__(cls)
+        return cls.__instance__
+
+    @classmethod
+    def create(self):
+        """
+        The constructor for the plugin manager. Passes the controllers on to
+        the plugins for them to interact with via their ServiceItems.
+
+        ``plugin_dir``
+            The directory to search for plugins.
+        """
+        log.info(u'Kernel Initialising')
+        self.service_list = {}
+
+    def get(self, key):
+        if key in self.service_list:
+            return self.service_list[key]
+        else:
+            log.error(u'Service %s not found in list' % key)
+            return None
+
+    def register(self, key, reference):
+        print "register"
+        if key in self.service_list:
+            log.error(u'Duplicate service exception %s' % key)
+            raise Exception(u'Duplicate service exception %s' % key)
+        else:
+            self.service_list[key] = reference
+        print self.service_list