Upgrade mv-to-docs for python3

bin/mv-to-docs

@@ -11,20 +11,25 @@ import shutil
 import sys
 
 from datetime import date
+from unicodedata import normalize
 
-_slugify_strip_re = re.compile(r'[^\w\s-]')
-_slugify_hyphenate_re = re.compile(r'[-\s]+')
-def slugify(value):
-    '''
-    Normalizes string, converts to lowercase, removes non-alpha characters,
-    and converts spaces to hyphens.
+_punctuation_re = re.compile(r'[\t !"#$%&\'()*\-/<=>?@\[\\\]^_`{|},.]+')
 
-    From Django's "django/template/defaultfilters.py".
-    '''
-    import unicodedata
-    value = unicodedata.normalize('NFKD', value).encode('ascii', 'ignore')
-    value = unicode(_slugify_strip_re.sub('', value).strip().lower())
-    return _slugify_hyphenate_re.sub('-', value)
+def slugify(text, delim='-'):
+    """
+    Generate an ASCII-only slug.
+    """
+
+    result = []
+    for word in _punctuation_re.split(text.lower()):
+        word = normalize('NFKD', word) \
+               .encode('ascii', 'ignore') \
+               .decode('utf-8')
+
+        if word:
+            result.append(word)
+
+    return delim.join(result)
 
 def usage():
     return 'Usage: mv-to-docs [SRC_DOC] [CATEGORY] [MESSAGE]'
@@ -43,18 +48,19 @@ def main(file_name='', dir_name='', message = ''):
         print('could not find path → creating directory: {}'.format(doc_path))
         os.mkdir(doc_path)
 
-    path_with_year = "%s/%s".format((doc_path, file_date.strftime("%Y")))
+    year = file_date.strftime("%Y")
+    path_with_year = '{}/{}'.format(doc_path, year)
     if not os.path.exists(path_with_year):
         os.mkdir(path_with_year)
         pass
 
-    new_file_path = '%s/%s_%s.%s'.format(path_with_year,
-                                         file_date.strftime("%Y-%m-%d"),
+    new_file_path = '{}/{}_{}.{}'.format(path_with_year,
+                                         file_date,
                                          message,
                                          file_type)
 
     if not os.path.isfile(new_file_path):
-        print("Moving file '%s' to '%s'" % (file_name, new_file_path))
+        print("Moving file '{}' to '{}'".format(file_name, new_file_path))
         shutil.copyfile(file_name, new_file_path)
         os.unlink(file_name)
     else: