Add iframe conversion support (#102)

Co-authored-by: [email protected] <[email protected]>

lib/reverse_markdown.rb

@@ -31,6 +31,7 @@
 require 'reverse_markdown/converters/td'
 require 'reverse_markdown/converters/text'
 require 'reverse_markdown/converters/tr'
+require 'reverse_markdown/converters/iframe'
 
 module ReverseMarkdown
 

lib/reverse_markdown/converters/base.rb

@@ -19,6 +19,10 @@ def extract_title(node)
         title = escape_keychars(node['title'].to_s)
         title.empty? ? '' : %[ "#{title}"]
       end
+
+      def extract_src(node)
+        node['src'].to_s.empty? ? '' : node['src'].to_s
+      end
     end
   end
 end

lib/reverse_markdown/converters/iframe.rb

@@ -0,0 +1,11 @@
+module ReverseMarkdown
+  module Converters
+    class Iframe < Base
+      def convert(node, state = {})
+        extract_src(node)
+      end
+    end
+
+    register :iframe, Iframe.new
+  end
+end