+def asbis(filenames, output_dir, verbose):
+    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)
+            slug, ext = os.path.splitext(fname)
+
+            if output_dir != '':
+                try:
+                    os.makedirs(output_dir)
+                except:
+                    pass
+            outfile = os.path.join(output_dir, slug + '.epub')
+            epub.transform(provider, file_path=main_input, output_file=outfile,
+                    cover_fn=cover.asbis_cover, flags=('less-advertising',))
+    except ParseError, e:
+        print '%(file)s:%(name)s:%(message)s' % {
+            'file': main_input,
+            'name': e.__class__.__name__,
+            'message': e.message
+        }
+