lib/rubocop/cop/rubycw/rubycw.rb in rubocop-rubycw-0.1.0 vs lib/rubocop/cop/rubycw/rubycw.rb in rubocop-rubycw-0.1.1

@@ -1,32 +1,27 @@
 # frozen_string_literal: true
 
-require 'open3'
-require 'rbconfig'
-
 module RuboCop
   module Cop
     module Rubycw
       # Execute `ruby -cw` and wrap the warning as RuboCop offense.
       class Rubycw < Cop
         include RangeHelp
 
         def investigate(processed_source)
           source = processed_source.raw_source
-          _stdout, stderr, _status = Open3.capture3(ruby, '-cw', '-e', source)
 
-          stderr.each_line do |line|
-            line.chomp!
-            lnum = line[/-e:(\d+):/, 1].to_i
-            message = line[/-e:\d+: warning: (.+)$/, 1]
+          warnings(source).each do |line|
+            lnum = line[/.+:(\d+):/, 1].to_i
+            message = line[/.+:\d+: warning: (.+)$/, 1]
 
             range = source_range(processed_source.buffer, lnum, 0)
             add_offense(range, location: range, message: message)
           end
         end
 
-        def ruby
-          RbConfig.ruby
+        def warnings(source)
+          RuboCop::Rubycw::WarningCapturer.capture(source)
         end
       end
     end
   end
 end