st2common.match_wildcard() - Code Metrics - Inspection of "Merge pull request #2523 from StackStorm/nginx-con..." - StackStorm/st2 - Measure and Improve Code Quality continuously with Scrutinizer

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by Arma

created 2016-02-24 17:22 UTC

st2common.match_wildcard() A

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cc	2
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loc	5
rs	9.4285

# Licensed to the StackStorm, Inc ('StackStorm') under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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 re
import fnmatch

from st2common.util import date as date_utils

__all__ = [
    'get_operator',
    'get_allowed_operators'
]


def get_allowed_operators():
    return operators


def get_operator(op):
    op = op.lower()
    if op in operators:
        return operators[op]
    else:
        raise Exception('Invalid operator: ' + op)

# Operation implementations


def equals(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return value == criteria_pattern


def nequals(value, criteria_pattern):
    return value != criteria_pattern


def iequals(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return value.lower() == criteria_pattern.lower()


def contains(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return criteria_pattern in value


def icontains(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return criteria_pattern.lower() in value.lower()


def ncontains(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return criteria_pattern not in value


def incontains(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return criteria_pattern.lower() not in value.lower()


def startswith(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return value.startswith(criteria_pattern)


def istartswith(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return value.lower().startswith(criteria_pattern.lower())


def endswith(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return value.endswith(criteria_pattern)


def iendswith(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return value.lower().endswith(criteria_pattern.lower())


def less_than(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return value < criteria_pattern


def greater_than(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return value > criteria_pattern


def match_wildcard(value, criteria_pattern):
    if criteria_pattern is None:
        return False

    return fnmatch.fnmatch(value, criteria_pattern)


def match_regex(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    regex = re.compile(criteria_pattern, re.DOTALL)
    # check for a match and not for details of the match.
    return regex.match(value) is not None


def _timediff(diff_target, period_seconds, operator):
    """
    :param diff_target: Date string.
    :type diff_target: ``str``

    :param period_seconds: Seconds.
    :type period_seconds: ``int``

    :rtype: ``bool``
    """
    # Pickup now in UTC to compare against
    utc_now = date_utils.get_datetime_utc_now()

    # assuming diff_target is UTC and specified in python iso format.
    # Note: date_utils.parse uses dateutil.parse which is way more flexible then strptime and
    # supports many date formats
    diff_target_utc = date_utils.parse(diff_target)
    return operator((utc_now - diff_target_utc).total_seconds(), period_seconds)


def timediff_lt(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return _timediff(diff_target=value, period_seconds=criteria_pattern, operator=less_than)


def timediff_gt(value, criteria_pattern):
    if criteria_pattern is None:
        return False
    return _timediff(diff_target=value, period_seconds=criteria_pattern, operator=greater_than)


def exists(value, criteria_pattern):
    return value is not None


def nexists(value, criteria_pattern):
    return value is None

# operator match strings
MATCH_WILDCARD = 'matchwildcard'
MATCH_REGEX = 'matchregex'
EQUALS_SHORT = 'eq'
EQUALS_LONG = 'equals'
NEQUALS_LONG = 'nequals'
NEQUALS_SHORT = 'neq'
IEQUALS_SHORT = 'ieq'
IEQUALS_LONG = 'iequals'
CONTAINS_LONG = 'contains'
ICONTAINS_LONG = 'icontains'
NCONTAINS_LONG = 'ncontains'
INCONTAINS_LONG = 'incontains'
STARTSWITH_LONG = 'startswith'
ISTARTSWITH_LONG = 'istartswith'
ENDSWITH_LONG = 'endswith'
IENDSWITH_LONG = 'iendswith'
LESS_THAN_SHORT = 'lt'
LESS_THAN_LONG = 'lessthan'
GREATER_THAN_SHORT = 'gt'
GREATER_THAN_LONG = 'greaterthan'
TIMEDIFF_LT_SHORT = 'td_lt'
TIMEDIFF_LT_LONG = 'timediff_lt'
TIMEDIFF_GT_SHORT = 'td_gt'
TIMEDIFF_GT_LONG = 'timediff_gt'
KEY_EXISTS = 'exists'
KEY_NOT_EXISTS = 'nexists'

# operator lookups
operators = {
    MATCH_WILDCARD: match_wildcard,
    MATCH_REGEX: match_regex,
    EQUALS_SHORT: equals,
    EQUALS_LONG: equals,
    NEQUALS_SHORT: nequals,
    NEQUALS_LONG: nequals,
    IEQUALS_SHORT: iequals,
    IEQUALS_LONG: iequals,
    CONTAINS_LONG: contains,
    ICONTAINS_LONG: icontains,
    NCONTAINS_LONG: ncontains,
    INCONTAINS_LONG: incontains,
    STARTSWITH_LONG: startswith,
    ISTARTSWITH_LONG: istartswith,
    ENDSWITH_LONG: endswith,
    IENDSWITH_LONG: iendswith,
    LESS_THAN_SHORT: less_than,
    LESS_THAN_LONG: less_than,
    GREATER_THAN_SHORT: greater_than,
    GREATER_THAN_LONG: greater_than,
    TIMEDIFF_LT_SHORT: timediff_lt,
    TIMEDIFF_LT_LONG: timediff_lt,
    TIMEDIFF_GT_SHORT: timediff_gt,
    TIMEDIFF_GT_LONG: timediff_gt,
    KEY_EXISTS: exists,
    KEY_NOT_EXISTS: nexists
}


1			# Licensed to the StackStorm, Inc ('StackStorm') under one or more
2			# contributor license agreements. See the NOTICE file distributed with
3			# this work for additional information regarding copyright ownership.
4			# The ASF licenses this file to You under the Apache License, Version 2.0
5			# (the "License"); you may not use this file except in compliance with
6			# the License. You may obtain a copy of the License at
7			#
8			# http://www.apache.org/licenses/LICENSE-2.0
9			#
10			# Unless required by applicable law or agreed to in writing, software
11			# distributed under the License is distributed on an "AS IS" BASIS,
12			# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13			# See the License for the specific language governing permissions and
14			# limitations under the License.
15
16			import re
17			import fnmatch
18
19			from st2common.util import date as date_utils
20
21			__all__ = [
22			'get_operator',
23			'get_allowed_operators'
24			]
25
26
27			def get_allowed_operators():
28			return operators
29
30
31			def get_operator(op):
32			op = op.lower()
33			if op in operators:
34			return operators[op]
35			else:
36			raise Exception('Invalid operator: ' + op)
37
38			# Operation implementations
39
40
41			def equals(value, criteria_pattern):
42			if criteria_pattern is None:
43			return False
44			return value == criteria_pattern
45
46
47			def nequals(value, criteria_pattern):
48			return value != criteria_pattern
49
50
51			def iequals(value, criteria_pattern):
52			if criteria_pattern is None:
53			return False
54			return value.lower() == criteria_pattern.lower()
55
56
57			def contains(value, criteria_pattern):
58			if criteria_pattern is None:
59			return False
60			return criteria_pattern in value
61
62
63			def icontains(value, criteria_pattern):
64			if criteria_pattern is None:
65			return False
66			return criteria_pattern.lower() in value.lower()
67
68
69			def ncontains(value, criteria_pattern):
70			if criteria_pattern is None:
71			return False
72			return criteria_pattern not in value
73
74
75			def incontains(value, criteria_pattern):
76			if criteria_pattern is None:
77			return False
78			return criteria_pattern.lower() not in value.lower()
79
80
81			def startswith(value, criteria_pattern):
82			if criteria_pattern is None:
83			return False
84			return value.startswith(criteria_pattern)
85
86
87			def istartswith(value, criteria_pattern):
88			if criteria_pattern is None:
89			return False
90			return value.lower().startswith(criteria_pattern.lower())
91
92
93			def endswith(value, criteria_pattern):
94			if criteria_pattern is None:
95			return False
96			return value.endswith(criteria_pattern)
97
98
99			def iendswith(value, criteria_pattern):
100			if criteria_pattern is None:
101			return False
102			return value.lower().endswith(criteria_pattern.lower())
103
104
105			def less_than(value, criteria_pattern):
106			if criteria_pattern is None:
107			return False
108			return value < criteria_pattern
109
110
111			def greater_than(value, criteria_pattern):
112			if criteria_pattern is None:
113			return False
114			return value > criteria_pattern
115
116
117			def match_wildcard(value, criteria_pattern):
118			if criteria_pattern is None:
119			return False
120
121			return fnmatch.fnmatch(value, criteria_pattern)
122
123
124			def match_regex(value, criteria_pattern):
125			if criteria_pattern is None:
126			return False
127			regex = re.compile(criteria_pattern, re.DOTALL)
128			# check for a match and not for details of the match.
129			return regex.match(value) is not None
130
131
132			def _timediff(diff_target, period_seconds, operator):
133			"""
134			:param diff_target: Date string.
135			:type diff_target: ``str``
136
137			:param period_seconds: Seconds.
138			:type period_seconds: ``int``
139
140			:rtype: ``bool``
141			"""
142			# Pickup now in UTC to compare against
143			utc_now = date_utils.get_datetime_utc_now()
144
145			# assuming diff_target is UTC and specified in python iso format.
146			# Note: date_utils.parse uses dateutil.parse which is way more flexible then strptime and
147			# supports many date formats
148			diff_target_utc = date_utils.parse(diff_target)
149			return operator((utc_now - diff_target_utc).total_seconds(), period_seconds)
150
151
152			def timediff_lt(value, criteria_pattern):
153			if criteria_pattern is None:
154			return False
155			return _timediff(diff_target=value, period_seconds=criteria_pattern, operator=less_than)
156
157
158			def timediff_gt(value, criteria_pattern):
159			if criteria_pattern is None:
160			return False
161			return _timediff(diff_target=value, period_seconds=criteria_pattern, operator=greater_than)
162
163
164			def exists(value, criteria_pattern):
165			return value is not None
166
167
168			def nexists(value, criteria_pattern):
169			return value is None
170
171			# operator match strings
172			MATCH_WILDCARD = 'matchwildcard'
173			MATCH_REGEX = 'matchregex'
174			EQUALS_SHORT = 'eq'
175			EQUALS_LONG = 'equals'
176			NEQUALS_LONG = 'nequals'
177			NEQUALS_SHORT = 'neq'
178			IEQUALS_SHORT = 'ieq'
179			IEQUALS_LONG = 'iequals'
180			CONTAINS_LONG = 'contains'
181			ICONTAINS_LONG = 'icontains'
182			NCONTAINS_LONG = 'ncontains'
183			INCONTAINS_LONG = 'incontains'
184			STARTSWITH_LONG = 'startswith'
185			ISTARTSWITH_LONG = 'istartswith'
186			ENDSWITH_LONG = 'endswith'
187			IENDSWITH_LONG = 'iendswith'
188			LESS_THAN_SHORT = 'lt'
189			LESS_THAN_LONG = 'lessthan'
190			GREATER_THAN_SHORT = 'gt'
191			GREATER_THAN_LONG = 'greaterthan'
192			TIMEDIFF_LT_SHORT = 'td_lt'
193			TIMEDIFF_LT_LONG = 'timediff_lt'
194			TIMEDIFF_GT_SHORT = 'td_gt'
195			TIMEDIFF_GT_LONG = 'timediff_gt'
196			KEY_EXISTS = 'exists'
197			KEY_NOT_EXISTS = 'nexists'
198
199			# operator lookups
200			operators = {
201			MATCH_WILDCARD: match_wildcard,
202			MATCH_REGEX: match_regex,
203			EQUALS_SHORT: equals,
204			EQUALS_LONG: equals,
205			NEQUALS_SHORT: nequals,
206			NEQUALS_LONG: nequals,
207			IEQUALS_SHORT: iequals,
208			IEQUALS_LONG: iequals,
209			CONTAINS_LONG: contains,
210			ICONTAINS_LONG: icontains,
211			NCONTAINS_LONG: ncontains,
212			INCONTAINS_LONG: incontains,
213			STARTSWITH_LONG: startswith,
214			ISTARTSWITH_LONG: istartswith,
215			ENDSWITH_LONG: endswith,
216			IENDSWITH_LONG: iendswith,
217			LESS_THAN_SHORT: less_than,
218			LESS_THAN_LONG: less_than,
219			GREATER_THAN_SHORT: greater_than,
220			GREATER_THAN_LONG: greater_than,
221			TIMEDIFF_LT_SHORT: timediff_lt,
222			TIMEDIFF_LT_LONG: timediff_lt,
223			TIMEDIFF_GT_SHORT: timediff_gt,
224			TIMEDIFF_GT_LONG: timediff_gt,
225			KEY_EXISTS: exists,
226			KEY_NOT_EXISTS: nexists
227			}
228

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st2common.match_wildcard() A

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