Puppet Function: parseyaml

Defined in:
puppet/modules/stdlib/lib/puppet/parser/functions/parseyaml.rb
Function type:
Ruby 3.x API

Overview

parseyaml() ⇒ Any

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.

Returns:

  • (Any) 


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# File 'puppet/modules/stdlib/lib/puppet/parser/functions/parseyaml.rb', line 6

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]
    # in ruby 1.9.3 Psych::SyntaxError is a RuntimeException
    # this still needs to catch that and work also on rubies that
    # do not have Psych available.
  rescue StandardError, Psych::SyntaxError => e
    if arguments[1]
      arguments[1]
    else
      raise e
    end
  end

end