Updates

ETB-API/venv/lib/python3.12/site-packages/timezone_field/choices.py

@@ -0,0 +1,66 @@
+import datetime
+
+from timezone_field.backends import get_tz_backend
+
+
+def normalize_standard(tztuple):
+    """Normalize timezone names by replacing special characters with space.
+
+    For proper sorting, using spaces makes comparisons more consistent.
+
+    :param str tztuple: tuple of timezone and representation
+    """
+    return tztuple[1].translate(str.maketrans({"-": " ", "_": " "}))
+
+
+def normalize_gmt(tztuple):
+    """Normalize timezone GMT names for sorting.
+
+    For proper sorting, using GMT values as a positive or negative number.
+
+    :param str tztuple: tuple of timezone and representation
+    """
+    gmt = tztuple[1].split()[0]
+    cmp = gmt.replace("GMT", "").replace(":", "")
+    return int(cmp)
+
+
+def standard(timezones):
+    """
+    Given a list of timezones (either strings of timezone objects),
+    return a list of choices with
+        * values equal to what was passed in
+        * display strings as the timezone name without underscores
+    """
+    choices = []
+    for tz in timezones:
+        tz_str = str(tz)
+        choices.append((tz, tz_str.replace("_", " ")))
+    return sorted(choices, key=normalize_standard)
+
+
+def with_gmt_offset(timezones, now=None, use_pytz=None):
+    """
+    Given a list of timezones (either strings of timezone objects),
+    return a list of choices with
+        * values equal to what was passed in
+        * display strings formated with GMT offsets and without
+          underscores. For example: "GMT-05:00 America/New York"
+        * sorted by their timezone offset
+    """
+    tz_backend = get_tz_backend(use_pytz)
+    now = now or datetime.datetime.now(tz_backend.utc_tzobj)
+    _choices = []
+    for tz in timezones:
+        tz_str = str(tz)
+        now_tz = now.astimezone(tz_backend.to_tzobj(tz_str))
+        delta = now_tz.replace(tzinfo=tz_backend.utc_tzobj) - now
+        display = "GMT{sign}{gmt_diff} {timezone}".format(
+            sign="+" if delta == abs(delta) else "-",
+            gmt_diff=str(abs(delta)).zfill(8)[:-3],
+            timezone=tz_str.replace("_", " "),
+        )
+        _choices.append((delta, tz, display))
+    _choices.sort(key=lambda x: x[0])
+    choices = [(one, two) for zero, one, two in _choices]
+    return sorted(choices, key=normalize_gmt)