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
|
# frozen_string_literal: true
#
# delete_regex.rb
# Please note: This function is an implementation of a Ruby class and as such may not be entirely UTF8 compatible. To ensure compatibility please use this function with Ruby 2.4.0 or greater - https://bugs.ruby-lang.org/issues/10085.
#
module Puppet::Parser::Functions
newfunction(:delete_regex, type: :rvalue, doc: <<-DOC
@summary
Deletes all instances of a given element that match a regular expression
from an array or key from a hash.
Multiple regular expressions are assumed to be matched as an OR.
@example Example usage
delete_regex(['a','b','c','b'], 'b')
Would return: ['a','c']
delete_regex(['a','b','c','b'], ['b', 'c'])
Would return: ['a']
delete_regex({'a'=>1,'b'=>2,'c'=>3}, 'b')
Would return: {'a'=>1,'c'=>3}
delete_regex({'a'=>1,'b'=>2,'c'=>3}, '^a$')
Would return: {'b'=>2,'c'=>3}
> *Note:*
Since Puppet 4 this can be done in general with the built-in
[`filter`](https://puppet.com/docs/puppet/latest/function.html#filter) function:
["aaa", "aba", "aca"].filter |$val| { $val !~ /b/ }
Would return: ['aaa', 'aca']
@return [Array] The given array now missing all targeted values.
DOC
) do |arguments|
raise(Puppet::ParseError, "delete_regex(): Wrong number of arguments given #{arguments.size} for 2") unless arguments.size == 2
collection = arguments[0].dup
Array(arguments[1]).each do |item|
case collection
when Array, Hash, String
collection.reject! { |coll_item| (coll_item =~ %r{\b#{item}\b}) }
else
raise(TypeError, "delete_regex(): First argument must be an Array, Hash, or String. Given an argument of class #{collection.class}.")
end
end
collection
end
end
# vim: set ts=2 sw=2 et :
|
