lib/childprocess/jruby/process.rb in childprocess-0.1.5 vs lib/childprocess/jruby/process.rb in childprocess-0.1.6

@@ -28,26 +28,33 @@
         @exit_code = @process.exitValue
       end
 
       private
 
-      def launch_process
+      def launch_process(&blk)
         pb = java.lang.ProcessBuilder.new(@args)
 
         env = pb.environment
         ENV.each { |k,v| env.put(k, v) }
 
         @process = pb.start
+
         setup_io
       end
 
       def setup_io
         if @io
           redirect @process.getErrorStream, @io.stderr
           redirect @process.getInputStream, @io.stdout
         else
           @process.getErrorStream.close
           @process.getInputStream.close
+        end
+
+        if duplex?
+          io._stdin = @process.getOutputStream.to_io
+        else
+          @process.getOutputStream.close
         end
       end
 
       def redirect(input, output)
         if output.nil?