"""
Checks to see if an entry should be filtered out based on subject.
"""
# Copyright © 2004 Saugus.net, Inc.
# All Rights Reserved.

# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.


retVal=0

# If there's no filter, entry is okay
if not context.filter or len(context.filter)==0 or len(context.filter[0])==0:
  retVal=1

# If a subjectStr is provided, check to see if it's in the subject
elif subjectStr:
  if subjectStr in context.Subject():
    retVal=1

# If there's a filter, ensure entry's subject is in it
else:
  for subjectStr in context.filter:
    if subjectStr in context.Subject():
      retVal=1
      break

# If none of these are true, the entry should be filtered out
return retVal