--- /dev/null
+#
+# 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 => <<-EOS
+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.
+
+*Examples:*
+
+ 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}
+
+ EOS
+ ) 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 :