summaryrefslogtreecommitdiff
path: root/lib/puppet/parser/functions/parseyaml.rb
blob: 66d04131e5eed08455e86d977b8537d8000c800a (plain)
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
#
# parseyaml.rb
#

module Puppet::Parser::Functions
  newfunction(:parseyaml, :type => :rvalue, :doc => <<-EOS
This function accepts YAML as a string and converts it into the correct
Puppet structure.

The optional second argument can be used to pass a default value that will
be returned if the parsing of YAML string have failed.
  EOS
  ) do |arguments|
    raise ArgumentError, 'Wrong number of arguments. 1 or 2 arguments should be provided.' unless arguments.length >= 1
    require 'yaml'

    begin
      YAML::load(arguments[0]) || arguments[1]
    rescue Exception => e
      if arguments[1]
        arguments[1]
      else
        raise e
      end
    end

  end
end

# vim: set ts=2 sw=2 et :