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
|
require_relative 'range/lt'
require_relative 'range/lt_eq'
require_relative 'range/gt'
require_relative 'range/gt_eq'
require_relative 'range/eq'
require_relative 'range/min_max'
module Puppet::Util::Package::Version
class Range
class ValidationFailure < ArgumentError; end
# Parses a version range string into a comparable {Range} instance.
#
# Currently parsed version range string may take any of the following
# forms:
#
# * Regular Version strings
# * ex. `"1.0.0"`, `"1.2.3-pre"`
# * Inequalities
# * ex. `">1.0.0"`, `"<3.2.0"`, `">=4.0.0"`
# * Range Intersections (min is always first)
# * ex. `">1.0.0 <=2.3.0"`
#
RANGE_SPLIT = /\s+/
FULL_REGEX = /\A((?:[<>=])*)(.+)\Z/
# @param range_string [String] the version range string to parse
# @param version_class [Version] a version class implementing comparison operators and parse method
# @return [Range] a new {Range} instance
# @api public
def self.parse(range_string, version_class)
raise ValidationFailure, "Unable to parse '#{range_string}' as a string" unless range_string.is_a?(String)
simples = range_string.split(RANGE_SPLIT).map do |simple|
match, operator, version = *simple.match(FULL_REGEX)
raise ValidationFailure, "Unable to parse '#{simple}' as a version range identifier" unless match
case operator
when '>'
Gt.new(version_class::parse(version))
when '>='
GtEq.new(version_class::parse(version))
when '<'
Lt.new(version_class::parse(version))
when '<='
LtEq.new(version_class::parse(version))
when ''
Eq.new(version_class::parse(version))
else
raise ValidationFailure, "Operator '#{operator}' is not implemented"
end
end
simples.size == 1 ? simples[0] : MinMax.new(simples[0], simples[1])
end
end
end
|
