rss: Add option Hash support to RSS::Parser.parse

Available options:

  * :validate
  * :ignore_unknown_element
  * :parser_class


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 2 deletions

diff --git a/lib/rss/parser.rb b/lib/rss/parser.rb
index a9842e6d40..e271dc381c 100644
--- a/lib/rss/parser.rb
+++ b/lib/rss/parser.rb
@@ -72,13 +72,31 @@ module RSS
         end
       end
 
-      def parse(rss, do_validate=true, ignore_unknown_element=true,
-                parser_class=default_parser)
+      def parse(rss, *args)
+        if args.last.is_a?(Hash)
+          options = args.pop
+        else
+          options = {}
+        end
+        do_validate = boolean_argument(args[0], options[:validate], true)
+        ignore_unknown_element =
+          boolean_argument(args[1], options[:ignore_unknown_element], true)
+        parser_class = args[2] || options[:parser_class] || default_parser
         parser = new(rss, parser_class)
         parser.do_validate = do_validate
         parser.ignore_unknown_element = ignore_unknown_element
         parser.parse
       end
+
+      private
+      def boolean_argument(positioned_value, option_value, default)
+        value = positioned_value
+        if value.nil? and not option_value.nil?
+          value = option_value
+        end
+        value = default if value.nil?
+        value
+      end
     end
 
     def_delegators(:@parser, :parse, :rss,