-    main_input = input_filenames[0]
-    if options.verbose:
-        print main_input
-    basepath, ext = os.path.splitext(main_input)
-    path, slug = os.path.realpath(basepath).rsplit('/', 1)
-    provider = DirDocProvider(path)
-    epub.transform(provider, slug, output_dir=path, make_dir=options.make_dir)
+    try:
+        for main_input in input_filenames:
+            if options.verbose:
+                print main_input
+
+            path, fname = os.path.realpath(main_input).rsplit('/', 1)
+            provider = DirDocProvider(path)
+            if not (options.output_file or options.output_dir):
+                output_file = os.path.splitext(main_input)[0] + '.epub'
+            else:
+                output_file = None
+
+            doc = WLDocument.from_file(main_input, provider=provider)
+            epub = doc.as_epub(cover=options.with_cover)
+
+            doc.save_output_file(epub,
+                output_file, options.output_dir, options.make_dir, 'epub')
+
+    except ParseError, e:
+        print '%(file)s:%(name)s:%(message)s' % {
+            'file': main_input,
+            'name': e.__class__.__name__,
+            'message': e
+        }