css.rb in nanoc-4.2.0b1

- old
+ new

@@ -1,22 +1,14 @@
 module ::Nanoc::Extra::Checking::Checks
   # @api private
-  class CSS < ::Nanoc::Extra::Checking::Check
+  class CSS < ::Nanoc::Extra::Checking::Checks::W3CValidator
     identifier :css
 
-    def run
-      require 'w3c_validators'
+    def extension
+      'css'
+    end
 
-      Dir[@config[:output_dir] + '/**/*.css'].each do |filename|
-        results = ::W3CValidators::CSSValidator.new.validate_file(filename)
-        lines = File.readlines(filename)
-        results.errors.each do |e|
-          line_num = e.line.to_i - 1
-          line = lines[line_num]
-          message = e.message.gsub(%r{\s+}, ' ').strip.sub(/\s+:$/, '')
-          desc = "line #{line_num + 1}: #{message}: #{line}"
-          add_issue(desc, subject: filename)
-        end
-      end
+    def validator_class
+      ::W3CValidators::CSSValidator
     end
   end
 end