--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sbsv2/raptor/python/pluginbox.py	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,68 @@
+#
+# Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+# All rights reserved.
+# This component and the accompanying materials are made available
+# under the terms of the License "Eclipse Public License v1.0"
+# which accompanies this distribution, and is available
+# at the URL "http://www.eclipse.org/legal/epl-v10.html".
+#
+# Initial Contributors:
+# Nokia Corporation - initial contribution.
+#
+# Contributors:
+#
+# Description: 
+# PluginBox module - finds classes 
+#
+
+from os import listdir
+import re
+from types import TypeType, ModuleType
+import sys
+
+class PluginModule(object):
+	"""Represents a module containing plugin classes """
+	def __init__(self, file):
+		self.module = __import__(file)
+		self.classes = []
+		self.__findclasses(self.module)
+
+	def __findclasses(self,module):
+		for c in module.__dict__:
+			mbr = module.__dict__[c]
+			if type(mbr) == TypeType:
+				self.classes.append(mbr)
+
+class PluginBox(object):
+	"""
+	A container that locates all the classes in a directory.
+	Example usage:
+
+		from person import Person
+		ps = PluginBox("plugins")
+		people = []
+		for i in ps.classesof(Person):
+			people.append(i())
+
+	"""
+	plugfilenamere=re.compile('^(.*)\.py$',re.I)
+	def __init__(self, plugindirectory):
+		self.pluginlist = []
+		self.plugindir = plugindirectory
+		sys.path.append(str(self.plugindir))
+		for f in listdir(plugindirectory):
+			m = PluginBox.plugfilenamere.match(f)
+			if m is not None:
+				self.pluginlist.append(PluginModule(m.groups()[0]))
+		sys.path = sys.path[:-1]
+
+	def classesof(self, classtype):
+		"""return a list of all classes that are subclasses of <classtype>"""
+		classes = []
+		for p in self.pluginlist:
+			for c in p.classes:
+				if issubclass(c, classtype):
+					if c.__name__ != classtype.__name__:
+						classes.append(c)
+		return classes
+