68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
# Copyright (c) 2011 OpenStack Foundation
|
|
# All Rights Reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
import operator
|
|
|
|
# 1. The following operations are supported:
|
|
# =, s==, s!=, s>=, s>, s<=, s<, <in>, <all-in>, <or>, ==, !=, >=, <=
|
|
# 2. Note that <or> is handled in a different way below.
|
|
# 3. If the first word in the extra_specs is not one of the operators,
|
|
# it is ignored.
|
|
op_methods = {'=': lambda x, y: float(x) >= float(y),
|
|
'<in>': lambda x, y: y in x,
|
|
'<all-in>': lambda x, y: all(val in x for val in y),
|
|
'==': lambda x, y: float(x) == float(y),
|
|
'!=': lambda x, y: float(x) != float(y),
|
|
'>=': lambda x, y: float(x) >= float(y),
|
|
'<=': lambda x, y: float(x) <= float(y),
|
|
's==': operator.eq,
|
|
's!=': operator.ne,
|
|
's<': operator.lt,
|
|
's<=': operator.le,
|
|
's>': operator.gt,
|
|
's>=': operator.ge}
|
|
|
|
|
|
def match(value, req):
|
|
words = req.split()
|
|
|
|
op = method = None
|
|
if words:
|
|
op = words.pop(0)
|
|
method = op_methods.get(op)
|
|
|
|
if op != '<or>' and not method:
|
|
return value == req
|
|
|
|
if value is None:
|
|
return False
|
|
|
|
if op == '<or>': # Ex: <or> v1 <or> v2 <or> v3
|
|
while True:
|
|
if words.pop(0) == value:
|
|
return True
|
|
if not words:
|
|
break
|
|
words.pop(0) # remove a keyword <or>
|
|
if not words:
|
|
break
|
|
return False
|
|
|
|
if words:
|
|
if op == '<all-in>': # requires a list not a string
|
|
return method(value, words)
|
|
return method(value, words[0])
|
|
return False
|