00001 # Software License Agreement (BSD License) 00002 # 00003 # Copyright (c) 2012, Willow Garage, Inc. 00004 # All rights reserved. 00005 # 00006 # Redistribution and use in source and binary forms, with or without 00007 # modification, are permitted provided that the following conditions 00008 # are met: 00009 # 00010 # * Redistributions of source code must retain the above copyright 00011 # notice, this list of conditions and the following disclaimer. 00012 # * Redistributions in binary form must reproduce the above 00013 # copyright notice, this list of conditions and the following 00014 # disclaimer in the documentation and/or other materials provided 00015 # with the distribution. 00016 # * Neither the name of Willow Garage, Inc. nor the names of its 00017 # contributors may be used to endorse or promote products derived 00018 # from this software without specific prior written permission. 00019 # 00020 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00021 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00022 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00023 # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00024 # COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00025 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00026 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00027 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00028 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00029 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00030 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00031 # POSSIBILITY OF SUCH DAMAGE. 00032 00033 00034 class FilterCollection: 00035 """ 00036 Collection of filters to test messages against. 00037 """ 00038 def __init__(self): 00039 self._filters = [] 00040 00041 def test_message(self, message, default=False): 00042 """ 00043 Test if the message matches any filter. 00044 :param message: message to be tested against the filters, ''Message'' 00045 :param default: return value when there is no active filter, ''bool'' 00046 :returns: True if the message matches any filter, ''bool'' 00047 """ 00048 match = default 00049 for f in self._filters: 00050 if f.is_enabled() and f.has_filter(): 00051 if f.test_message(message): 00052 return True 00053 else: 00054 match = False 00055 return match 00056 00057 def append(self, filter): 00058 self._filters.append(filter) 00059 00060 def count_enabled_filters(self): 00061 enabled = [f for f in self._filters if f.is_enabled()] 00062 return len(enabled) 00063 00064 def __len__(self): 00065 return len(self._filters) 00066 00067 def __delitem__(self, index): 00068 del self._filters[index]