Newer
Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
# Copyright 2020 Canonical Ltd.
#
# 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 re
from functools import total_ordering
@total_ordering
class JujuVersion:
PATTERN = r'''^
(?P<major>\d{1,9})\.(?P<minor>\d{1,9}) # <major> and <minor> numbers are always there
((?:\.|-(?P<tag>[a-z]+))(?P<patch>\d{1,9}))? # sometimes with .<patch> or -<tag><patch>
(\.(?P<build>\d{1,9}))?$ # and sometimes with a <build> number.
'''
def __init__(self, version):
m = re.match(self.PATTERN, version, re.VERBOSE)
if not m:
raise RuntimeError('"{}" is not a valid Juju version string'.format(version))
d = m.groupdict()
self.major = int(m.group('major'))
self.minor = int(m.group('minor'))
self.tag = d['tag'] or ''
self.patch = int(d['patch'] or 0)
self.build = int(d['build'] or 0)
def __repr__(self):
if self.tag:
s = '{}.{}-{}{}'.format(self.major, self.minor, self.tag, self.patch)
else:
s = '{}.{}.{}'.format(self.major, self.minor, self.patch)
if self.build > 0:
s += '.{}'.format(self.build)
return s
def __eq__(self, other):
if self is other:
return True
if isinstance(other, str):
other = type(self)(other)
elif not isinstance(other, JujuVersion):
raise RuntimeError('cannot compare Juju version "{}" with "{}"'.format(self, other))
return (
self.major == other.major
and self.minor == other.minor
and self.tag == other.tag
and self.build == other.build
and self.patch == other.patch)
def __lt__(self, other):
if self is other:
return False
if isinstance(other, str):
other = type(self)(other)
elif not isinstance(other, JujuVersion):
raise RuntimeError('cannot compare Juju version "{}" with "{}"'.format(self, other))
if self.major != other.major:
return self.major < other.major
elif self.minor != other.minor:
return self.minor < other.minor
elif self.tag != other.tag:
if not self.tag:
return False
elif not other.tag:
return True
return self.tag < other.tag
elif self.patch != other.patch:
return self.patch < other.patch
elif self.build != other.build:
return self.build < other.build
return False