1 files changed, 27 insertions, 0 deletions

diff --git a/copybump.py b/copybump.py
new file mode 100755
index 000000000..0b9bdf6b9
--- /dev/null
+++ b/copybump.py
@@ -0,0 +1,27 @@
+#! /usr/bin/env python3
+
+import os
+import re
+import datetime
+
+
+FSF = 'by the Free Software Foundation, Inc.'
+this_year = datetime.date.today().year
+pyre = re.compile(r'^# Copyright (C) (?P<start>\d{4}-)?(?P<end>\d{4})')
+
+
+def do_file(path):
+    with open(path) as in_file, open(path + '.out', 'w') as out_file:
+        for line in in_file:
+            mo = pyre.match(line)
+            if mo is None:
+                out_file.write(line)
+                continue
+            start = (mo.group('end')
+                     if mo.group('start') is None
+                     else mo.group('start'))
+            print('# Copyright (C) {}-{} {}'.format(
+                  mo.group('end'), this_year, FSF), file=out_file)
+            for line in in_file:
+                out_file.write(line)
+    os.rename(path + '.out', path)