sbsv2/raptor/python/filter_list.py
changeset 18 de5b887c98f7
parent 13 c327db0664bb
child 28 b8fa7dfeeaa1
--- a/sbsv2/raptor/python/filter_list.py	Tue May 18 19:36:14 2010 +0100
+++ b/sbsv2/raptor/python/filter_list.py	Fri Jun 04 13:09:28 2010 +0100
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+# Copyright (c) 2008-2010 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"
@@ -19,6 +19,7 @@
 import os
 import sys
 import raptor
+import re
 import filter_interface
 import pluginbox
 import traceback
@@ -64,8 +65,24 @@
 		"""Nothing to do for stdout"""
 		return True
 
-
-
+def SplitList(listString):
+	"""turn a CLI filter string into a list of (class, param) pairs.
+	
+	for example, "foo[a,b],bar[c,d]"
+	
+	becomes [ ("foo", ["a","b"]) , ("bar", ["c","d"]) ]
+	"""
+	matches = re.findall("(\w+)(\[([^\[\]]*)\])?,?", listString)
+	
+	pairs = []
+	for m in matches:
+		classname = m[0]
+		if len(m[2]) > 0:
+			pairs.append( (classname, m[2].split(",")) )
+		else:
+			pairs.append( (classname, []) )
+	return pairs
+	
 class FilterList(filter_interface.Filter):
 
 	def __init__(self):
@@ -81,14 +98,31 @@
 		# Find all the filter plugins
 		self.pbox = pbox
 		possiblefilters = self.pbox.classesof(filter_interface.Filter)
+		filterdict = {}
+		for p in possiblefilters:
+			name = p.__name__.lower()
+			if name in filterdict:
+				raise ValueError("filters found in SBS_HOME/python/plugins which have duplicate name: %s " % p.__name__)
+			else:
+				filterdict[name] = p
+		
+		# turn "filternames" into a list of (classname, parameters) pairs
+		filterCalls = SplitList(filternames)
+		
+		# look for each filter class in the box
 		unfound = []
 		self.filters = []
-		for f in filternames:
-			unfound.append(f) # unfound unless we find it
-			for pl in possiblefilters:
-				if pl.__name__.upper() == f.upper():
-					self.filters.append(pl())
-					unfound = unfound[:-1]
+		for (f, params) in filterCalls:
+			# if the filter exists and is a valid filter use it
+			if f.lower() in filterdict:
+				if params:
+					self.filters.append(filterdict[f.lower()](params))
+				else:
+					self.filters.append(filterdict[f.lower()]())
+			else:
+				# record missing filters
+				unfound.append(f)
+
 		if unfound != []:
 			raise ValueError("requested filters not found: %s \
 			\nAvailable filters are: %s" % (str(unfound), self.format_output_list(possiblefilters)))