Don't use strftime with %b which relies on locale

AT0myks · AT0myks · commit e96a5010f3c9 · 2022-01-17T00:48:12.000+01:00
diff --git a/imbox/query.py b/imbox/query.py
@@ -1,12 +1,14 @@
 import datetime
 
+from imbox.utils import date_to_date_text
+
 
 def build_search_query(imap_attribute_lookup, **kwargs):
     query = []
     for name, value in kwargs.items():
         if value is not None:
             if isinstance(value, datetime.date):
-                value = value.strftime('%d-%b-%Y')
+                value = date_to_date_text(value)
             if isinstance(value, str) and '"' in value:
                 value = value.replace('"', "'")
             query.append(imap_attribute_lookup[name].format(value))
diff --git a/imbox/utils.py b/imbox/utils.py
@@ -1,4 +1,6 @@
+import datetime
 import logging
+from imaplib import Time2Internaldate
 logger = logging.getLogger(__name__)
 
 
@@ -14,3 +16,10 @@ def str_decode(value='', encoding=None, errors='strict'):
         return value.decode(encoding or 'utf-8', errors=errors)
     else:
         raise TypeError("Cannot decode '{}' object".format(value.__class__))
+
+
+def date_to_date_text(date):
+    """Return a date in the RFC 3501 date-text syntax"""
+    tzutc = datetime.timezone.utc
+    dt = datetime.datetime.combine(date, datetime.time.min, tzutc)
+    return Time2Internaldate(dt)[1:12]
