-            output_file = open(output_filename, 'w')
-            text.transform(open(input_filename), output_file, parse_dublincore=options.parse_dublincore,
-                wrapping=str(options.wrapping))
+            doc = WLDocument.from_file(input_filename,
+                parse_dublincore=options.parse_dublincore)
+            html = doc.as_text(wrapping=str(options.wrapping))
+            doc.save_output_file(html, output_path=output_filename)