module Puppet::Parser::Functions
newfunction(:parsejson, :type => :rvalue, :doc => <<-EOS
-This function accepts JSON as a string and converts into the correct Puppet
-structure.
- EOS
+This function accepts JSON 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
- if (arguments.size != 1) then
- raise(Puppet::ParseError, "parsejson(): Wrong number of arguments "+
- "given #{arguments.size} for 1")
+ begin
+ PSON::load(arguments[0]) || arguments[1]
+ rescue StandardError => e
+ if arguments[1]
+ arguments[1]
+ else
+ raise e
+ end
end
- json = arguments[0]
-
- # PSON is natively available in puppet
- PSON.load(json)
end
end