3 # 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.
5 module Puppet::Parser::Functions
6 newfunction(:delete_regex, :type => :rvalue, :doc => <<-DOC
7 deletes all instances of a given element that match a regular expression
8 from an array or key from a hash. Multiple regular expressions are assumed
9 to be matched as an OR.
13 delete_regex(['a','b','c','b'], 'b')
14 Would return: ['a','c']
16 delete_regex(['a','b','c','b'], ['b', 'c'])
19 delete_regex({'a'=>1,'b'=>2,'c'=>3}, 'b')
20 Would return: {'a'=>1,'c'=>3}
22 delete_regex({'a'=>1,'b'=>2,'c'=>3}, '^a$')
23 Would return: {'b'=>2,'c'=>3}
25 Note that since Puppet 4 this can be done in general with the filter function:
27 ["aaa", "aba", "aca"].filter |$val| { $val !~ /b/ }
28 # Would return: ['aaa', 'aca']
34 raise(Puppet::ParseError, "delete_regex(): Wrong number of arguments given #{arguments.size} for 2") unless arguments.size == 2
36 collection = arguments[0].dup
37 Array(arguments[1]).each do |item|
39 when Array, Hash, String
40 collection.reject! { |coll_item| (coll_item =~ %r{\b#{item}\b}) }
42 raise(TypeError, "delete_regex(): First argument must be an Array, Hash, or String. Given an argument of class #{collection.class}.")
49 # vim: set ts=2 sw=2 et :