gracefully handle non-parseable dates (fixes kdeldycke#23)

kdeldycke#23
aspiers · Mar 21, 2013 · a2bc66e · a2bc66e
1 parent 7f624b6
commit a2bc66e
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/maildir-deduplicate.py b/maildir-deduplicate.py
@@ -245,7 +245,12 @@ def get_canonical_header_value(header, value):
     elif header == 'date':
         # Date timestamps can differ by seconds or hours for various
         # reasons, so let's only honour the date for now.
-        utc_timestamp = email.utils.mktime_tz(email.utils.parsedate_tz(value))
+        try:
+            parsed = email.utils.parsedate_tz(value)
+            utc_timestamp = email.utils.mktime_tz(parsed)
+        except TypeError: # if parsedate_tz cannot parse the date
+            return value
+
         return time.strftime('%Y/%m/%d UTC', time.gmtime(utc_timestamp))
     elif header == 'to':
         # Sometimes email.parser strips the <> brackets from a To: