stdlib::parsehocon: Support reading files

lib/puppet/functions/stdlib/parsehocon.rb

@@ -4,6 +4,10 @@
 #   This function accepts HOCON as a string and converts it into the correct
 #   Puppet structure
 #
+# @param hocon_string can be an actual string of data or a path to a Hocon config file
+#
+# @param default content that will be returned in case the string isn't parseable
+#
 # @example How to parse hocon
 #   $data = stdlib::parsehocon("{any valid hocon: string}")
 #
@@ -17,11 +21,15 @@
   end
 
   def parsehocon(hocon_string, default = :no_default_provided)
-    require 'hocon/config_factory'
-
     begin
-      data = Hocon::ConfigFactory.parse_string(hocon_string)
-      data.resolve.root.unwrapped
+      if File.exist? hocon_string
+        require 'hocon'
+        Hocon.load(hocon_string)
+      else
+        require 'hocon/config_factory'
+        data = Hocon::ConfigFactory.parse_string(hocon_string)
+        data.resolve.root.unwrapped
+      end
     rescue Hocon::ConfigError::ConfigParseError => e
       Puppet.debug("Parsing hocon failed with error: #{e.message}")
       raise e if default == :no_default_provided