Initial import from Docker volume

tools/timezone.py

@@ -0,0 +1,46 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+import logging
+import os
+
+try:
+    import zoneinfo
+    ZoneInfo = zoneinfo.ZoneInfo
+    ZoneInfoNotFoundError = zoneinfo.ZoneInfoNotFoundError
+except ImportError:
+    zoneinfo = None
+    import pytz
+    from dateutil.tz import gettz as ZoneInfo
+
+    class ZoneInfoNotFoundError(KeyError):
+        pass
+
+__all__ = ['SERVER', 'UTC', 'get_tzinfo', 'available_timezones']
+logger = logging.getLogger(__name__)
+_ALL_ZONES = None
+
+
+def available_timezones():
+    global _ALL_ZONES
+
+    if not _ALL_ZONES:
+        if zoneinfo:
+            _ALL_ZONES = zoneinfo.available_timezones()
+        else:
+            _ALL_ZONES = set(pytz.all_timezones)
+    return set(_ALL_ZONES)
+
+
+def get_tzinfo(zoneid):
+    try:
+        zi = ZoneInfo(zoneid)
+        if not zi:
+            raise ZoneInfoNotFoundError
+    except ZoneInfoNotFoundError:
+        logger.warning("Timezone %s not found falling back to UTC", zoneid)
+        zi = UTC
+    return zi
+
+
+UTC = ZoneInfo('UTC')
+SERVER = get_tzinfo(os.environ['TRYTOND_TZ'])