Refactor and buxfix (paths with funky characters would raise)

normalisename.py

@@ -7,6 +7,32 @@ from argparse import ArgumentParser
 from sys import exit
 
 
+class normalisename:
+    @property
+    def separator(self):
+        return self._separator
+
+    @property
+    def whitelist(self):
+        return self._whitelist
+
+    def __init__(self, separator, whitelist):
+        self._separator = separator
+        self._whitelist = set(whitelist)
+
+    def normalise(self, files):
+        for path in files:
+            dir = dirname(path)
+            file = basename(path)
+            rename(path, joinpath(dir, self.normalname(file)))
+
+    def normalname(self, filename):
+        return unidecode(''.join(ch for ch in filename.replace(' ', self.separator)
+                                 if ch.isalnum()
+                                 or ch in self.whitelist))
+
+
+if __name__ == '__main__':
     # parse arguments
     parser = ArgumentParser(description='Eliminate funky stuff from filenames.')
     parser.add_argument('--separator', '-s', type=str, nargs='?', default='_',
@@ -35,17 +61,4 @@ if args.allow: whitelist = whitelist.union(set(args.allow))
     if args.disallow: whitelist = whitelist.difference(set(args.disallow))
 
 
-for path in args.files:
-    dir = dirname(path)
-    file = basename(path)
-    rename(path,
-           unidecode
-           (
-               joinpath
-               (
-                   dir,
-                   ''.join(ch for ch in file.replace(' ', args.separator)
-                           if ch.isalnum()
-                           or ch in whitelist)
-               )
-           ))
+    normalisename(args.separator, whitelist).normalise(args.files)