mirror of
https://github.com/miniflux/v2.git
synced 2025-09-30 19:22:11 +00:00
b1742168e1
Debian Trixie has removed several time zones. This change makes sure only the current IANA time zones are in use.
522 lines
11 KiB
Go
522 lines
11 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package timezone // import "miniflux.app/v2/internal/timezone"
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import (
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"sync"
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"time"
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)
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var (
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tzCache = sync.Map{} // Cache for time locations to avoid loading them multiple times.
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)
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// Convert converts provided date time to actual timezone.
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func Convert(tz string, t time.Time) time.Time {
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userTimezone := getLocation(tz)
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if t.Location().String() == "" {
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if t.Before(time.Date(1, time.January, 1, 0, 0, 0, 0, time.UTC)) {
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return time.Date(0, time.January, 1, 0, 0, 0, 0, userTimezone)
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}
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// In this case, the provided date is already converted to the user timezone by Postgres,
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// but the timezone information is not set in the time struct.
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// We cannot use time.In() because the date will be converted a second time.
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return time.Date(
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t.Year(),
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t.Month(),
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t.Day(),
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t.Hour(),
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t.Minute(),
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t.Second(),
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t.Nanosecond(),
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userTimezone,
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)
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} else if t.Location() != userTimezone {
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return t.In(userTimezone)
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}
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return t
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}
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// Now returns the current time with the given timezone.
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func Now(tz string) time.Time {
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return time.Now().In(getLocation(tz))
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}
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func getLocation(tz string) *time.Location {
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if loc, ok := tzCache.Load(tz); ok {
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return loc.(*time.Location)
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}
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loc, err := time.LoadLocation(tz)
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if err != nil {
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loc = time.Local
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}
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tzCache.Store(tz, loc)
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return loc
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}
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// AvailableTimezones returns a map of supported timezones.
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// This list is taken from Postgres on Debian Trixie.
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func AvailableTimezones() map[string]string {
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timezones := []string{
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"Africa/Abidjan",
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"Africa/Accra",
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"Africa/Addis_Ababa",
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"Africa/Algiers",
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"Africa/Asmara",
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"Africa/Bamako",
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"Africa/Bangui",
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"Africa/Banjul",
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"Africa/Bissau",
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"Africa/Blantyre",
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"Africa/Brazzaville",
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"Africa/Bujumbura",
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"Africa/Cairo",
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"Africa/Casablanca",
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"Africa/Ceuta",
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"Africa/Conakry",
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"Africa/Dakar",
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"Africa/Dar_es_Salaam",
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"Africa/Djibouti",
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"Africa/Douala",
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"Africa/El_Aaiun",
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"Africa/Freetown",
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"Africa/Gaborone",
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"Africa/Harare",
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"Africa/Johannesburg",
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"Africa/Juba",
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"Africa/Kampala",
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"Africa/Khartoum",
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"Africa/Kigali",
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"Africa/Kinshasa",
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"Africa/Lagos",
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"Africa/Libreville",
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"Africa/Lome",
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"Africa/Luanda",
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"Africa/Lubumbashi",
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"Africa/Lusaka",
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"Africa/Malabo",
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"Africa/Maputo",
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"Africa/Maseru",
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"Africa/Mbabane",
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"Africa/Mogadishu",
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"Africa/Monrovia",
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"Africa/Nairobi",
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"Africa/Ndjamena",
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"Africa/Niamey",
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"Africa/Nouakchott",
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"Africa/Ouagadougou",
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"Africa/Porto-Novo",
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"Africa/Sao_Tome",
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"Africa/Timbuktu",
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"Africa/Tripoli",
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"Africa/Tunis",
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"Africa/Windhoek",
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"America/Adak",
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"America/Anchorage",
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"America/Anguilla",
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"America/Antigua",
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"America/Araguaina",
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"America/Argentina/Buenos_Aires",
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"America/Argentina/Catamarca",
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"America/Argentina/Cordoba",
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"America/Argentina/Jujuy",
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"America/Argentina/La_Rioja",
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"America/Argentina/Mendoza",
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"America/Argentina/Rio_Gallegos",
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"America/Argentina/Salta",
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"America/Argentina/San_Juan",
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"America/Argentina/San_Luis",
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"America/Argentina/Tucuman",
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"America/Argentina/Ushuaia",
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"America/Aruba",
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"America/Asuncion",
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"America/Atikokan",
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"America/Atka",
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"America/Bahia",
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"America/Bahia_Banderas",
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"America/Barbados",
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"America/Belem",
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"America/Belize",
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"America/Blanc-Sablon",
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"America/Boa_Vista",
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"America/Bogota",
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"America/Boise",
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"America/Cambridge_Bay",
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"America/Campo_Grande",
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"America/Cancun",
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"America/Caracas",
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"America/Cayenne",
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"America/Cayman",
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"America/Chicago",
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"America/Chihuahua",
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"America/Ciudad_Juarez",
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"America/Coral_Harbour",
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"America/Costa_Rica",
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"America/Coyhaique",
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"America/Creston",
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"America/Cuiaba",
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"America/Curacao",
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"America/Danmarkshavn",
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"America/Dawson",
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"America/Dawson_Creek",
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"America/Denver",
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"America/Detroit",
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"America/Dominica",
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"America/Edmonton",
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"America/Eirunepe",
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"America/El_Salvador",
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"America/Ensenada",
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"America/Fortaleza",
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"America/Fort_Nelson",
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"America/Glace_Bay",
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"America/Goose_Bay",
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"America/Grand_Turk",
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"America/Grenada",
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"America/Guadeloupe",
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"America/Guatemala",
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"America/Guayaquil",
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"America/Guyana",
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"America/Halifax",
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"America/Havana",
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"America/Hermosillo",
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"America/Indiana/Indianapolis",
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"America/Indiana/Knox",
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"America/Indiana/Marengo",
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"America/Indiana/Petersburg",
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"America/Indiana/Tell_City",
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"America/Indiana/Vevay",
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"America/Indiana/Vincennes",
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"America/Indiana/Winamac",
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"America/Inuvik",
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"America/Iqaluit",
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"America/Jamaica",
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"America/Juneau",
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"America/Kentucky/Louisville",
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"America/Kentucky/Monticello",
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"America/Kralendijk",
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"America/La_Paz",
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"America/Lima",
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"America/Los_Angeles",
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"America/Lower_Princes",
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"America/Maceio",
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"America/Managua",
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"America/Manaus",
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"America/Marigot",
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"America/Martinique",
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"America/Matamoros",
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"America/Mazatlan",
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"America/Menominee",
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"America/Merida",
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"America/Metlakatla",
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"America/Mexico_City",
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"America/Miquelon",
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"America/Moncton",
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"America/Monterrey",
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"America/Montevideo",
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"America/Montreal",
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"America/Montserrat",
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"America/Nassau",
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"America/New_York",
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"America/Nipigon",
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"America/Nome",
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"America/Noronha",
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"America/North_Dakota/Beulah",
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"America/North_Dakota/Center",
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"America/North_Dakota/New_Salem",
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"America/Nuuk",
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"America/Ojinaga",
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"America/Panama",
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"America/Pangnirtung",
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"America/Paramaribo",
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"America/Phoenix",
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"America/Port-au-Prince",
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"America/Porto_Acre",
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"America/Port_of_Spain",
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"America/Porto_Velho",
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"America/Puerto_Rico",
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"America/Punta_Arenas",
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"America/Rainy_River",
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"America/Rankin_Inlet",
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"America/Recife",
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"America/Regina",
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"America/Resolute",
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"America/Rio_Branco",
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"America/Santa_Isabel",
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"America/Santarem",
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"America/Santiago",
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"America/Santo_Domingo",
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"America/Sao_Paulo",
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"America/Scoresbysund",
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"America/Shiprock",
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"America/Sitka",
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"America/St_Barthelemy",
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"America/St_Johns",
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"America/St_Kitts",
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"America/St_Lucia",
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"America/St_Thomas",
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"America/St_Vincent",
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"America/Swift_Current",
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"America/Tegucigalpa",
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"America/Thule",
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"America/Thunder_Bay",
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"America/Tijuana",
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"America/Toronto",
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"America/Tortola",
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"America/Vancouver",
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"America/Virgin",
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"America/Whitehorse",
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"America/Winnipeg",
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"America/Yakutat",
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"America/Yellowknife",
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"Antarctica/Casey",
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"Antarctica/Davis",
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"Antarctica/DumontDUrville",
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"Antarctica/Macquarie",
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"Antarctica/Mawson",
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"Antarctica/McMurdo",
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"Antarctica/Palmer",
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"Antarctica/Rothera",
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"Antarctica/Syowa",
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"Antarctica/Troll",
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"Antarctica/Vostok",
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"Arctic/Longyearbyen",
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"Asia/Aden",
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"Asia/Almaty",
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"Asia/Amman",
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"Asia/Anadyr",
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"Asia/Aqtau",
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"Asia/Aqtobe",
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"Asia/Ashgabat",
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"Asia/Atyrau",
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"Asia/Baghdad",
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"Asia/Bahrain",
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"Asia/Baku",
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"Asia/Bangkok",
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"Asia/Barnaul",
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"Asia/Beirut",
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"Asia/Bishkek",
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"Asia/Brunei",
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"Asia/Chita",
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"Asia/Chongqing",
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"Asia/Colombo",
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"Asia/Damascus",
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"Asia/Dhaka",
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"Asia/Dili",
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"Asia/Dubai",
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"Asia/Dushanbe",
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"Asia/Famagusta",
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"Asia/Gaza",
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"Asia/Harbin",
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"Asia/Hebron",
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"Asia/Ho_Chi_Minh",
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"Asia/Hong_Kong",
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"Asia/Hovd",
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"Asia/Irkutsk",
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"Asia/Istanbul",
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"Asia/Jakarta",
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"Asia/Jayapura",
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"Asia/Jerusalem",
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"Asia/Kabul",
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"Asia/Kamchatka",
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"Asia/Karachi",
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"Asia/Kashgar",
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"Asia/Kathmandu",
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"Asia/Khandyga",
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"Asia/Kolkata",
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"Asia/Krasnoyarsk",
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"Asia/Kuala_Lumpur",
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"Asia/Kuching",
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"Asia/Kuwait",
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"Asia/Macau",
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"Asia/Magadan",
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"Asia/Makassar",
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"Asia/Manila",
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"Asia/Muscat",
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"Asia/Nicosia",
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"Asia/Novokuznetsk",
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"Asia/Novosibirsk",
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"Asia/Omsk",
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"Asia/Oral",
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"Asia/Phnom_Penh",
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"Asia/Pontianak",
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"Asia/Pyongyang",
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"Asia/Qatar",
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"Asia/Qostanay",
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"Asia/Qyzylorda",
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"Asia/Riyadh",
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"Asia/Sakhalin",
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"Asia/Samarkand",
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"Asia/Seoul",
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"Asia/Shanghai",
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"Asia/Singapore",
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"Asia/Srednekolymsk",
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"Asia/Taipei",
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"Asia/Tashkent",
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"Asia/Tbilisi",
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"Asia/Tehran",
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"Asia/Tel_Aviv",
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"Asia/Thimphu",
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"Asia/Tokyo",
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"Asia/Tomsk",
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"Asia/Ulaanbaatar",
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"Asia/Urumqi",
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"Asia/Ust-Nera",
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"Asia/Vientiane",
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"Asia/Vladivostok",
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"Asia/Yakutsk",
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"Asia/Yangon",
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"Asia/Yekaterinburg",
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"Asia/Yerevan",
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"Atlantic/Azores",
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"Atlantic/Bermuda",
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"Atlantic/Canary",
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"Atlantic/Cape_Verde",
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"Atlantic/Faroe",
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"Atlantic/Jan_Mayen",
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"Atlantic/Madeira",
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"Atlantic/Reykjavik",
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"Atlantic/South_Georgia",
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"Atlantic/Stanley",
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"Atlantic/St_Helena",
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"Australia/Adelaide",
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"Australia/Brisbane",
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"Australia/Broken_Hill",
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"Australia/Canberra",
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"Australia/Currie",
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"Australia/Darwin",
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"Australia/Eucla",
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"Australia/Hobart",
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"Australia/Lindeman",
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"Australia/Lord_Howe",
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"Australia/Melbourne",
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"Australia/Perth",
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"Australia/Sydney",
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"Australia/Yancowinna",
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"Europe/Amsterdam",
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"Europe/Andorra",
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"Europe/Astrakhan",
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"Europe/Athens",
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"Europe/Belfast",
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"Europe/Belgrade",
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"Europe/Berlin",
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"Europe/Bratislava",
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"Europe/Brussels",
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"Europe/Bucharest",
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"Europe/Budapest",
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"Europe/Busingen",
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"Europe/Chisinau",
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"Europe/Copenhagen",
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"Europe/Dublin",
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"Europe/Gibraltar",
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"Europe/Guernsey",
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"Europe/Helsinki",
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"Europe/Isle_of_Man",
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"Europe/Istanbul",
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"Europe/Jersey",
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"Europe/Kaliningrad",
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"Europe/Kirov",
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"Europe/Kyiv",
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"Europe/Lisbon",
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"Europe/Ljubljana",
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"Europe/London",
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"Europe/Luxembourg",
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"Europe/Madrid",
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"Europe/Malta",
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"Europe/Mariehamn",
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"Europe/Minsk",
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"Europe/Monaco",
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"Europe/Moscow",
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"Europe/Nicosia",
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"Europe/Oslo",
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"Europe/Paris",
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"Europe/Podgorica",
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"Europe/Prague",
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"Europe/Riga",
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"Europe/Rome",
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"Europe/Samara",
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"Europe/San_Marino",
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"Europe/Sarajevo",
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"Europe/Saratov",
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"Europe/Simferopol",
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"Europe/Skopje",
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"Europe/Sofia",
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"Europe/Stockholm",
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"Europe/Tallinn",
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"Europe/Tirane",
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"Europe/Tiraspol",
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"Europe/Ulyanovsk",
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"Europe/Vaduz",
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"Europe/Vatican",
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"Europe/Vienna",
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"Europe/Vilnius",
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"Europe/Volgograd",
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"Europe/Warsaw",
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"Europe/Zagreb",
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"Europe/Zurich",
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"GMT",
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"Indian/Antananarivo",
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"Indian/Chagos",
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"Indian/Christmas",
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"Indian/Cocos",
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"Indian/Comoro",
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"Indian/Kerguelen",
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"Indian/Mahe",
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"Indian/Maldives",
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"Indian/Mauritius",
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"Indian/Mayotte",
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"Indian/Reunion",
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"Pacific/Apia",
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"Pacific/Auckland",
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"Pacific/Bougainville",
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"Pacific/Chatham",
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"Pacific/Chuuk",
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"Pacific/Easter",
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"Pacific/Efate",
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"Pacific/Fakaofo",
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"Pacific/Fiji",
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"Pacific/Funafuti",
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"Pacific/Galapagos",
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"Pacific/Gambier",
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"Pacific/Guadalcanal",
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"Pacific/Guam",
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"Pacific/Honolulu",
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"Pacific/Johnston",
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"Pacific/Kanton",
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"Pacific/Kiritimati",
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"Pacific/Kosrae",
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"Pacific/Kwajalein",
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"Pacific/Majuro",
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"Pacific/Marquesas",
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"Pacific/Midway",
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"Pacific/Nauru",
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"Pacific/Niue",
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"Pacific/Norfolk",
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"Pacific/Noumea",
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"Pacific/Pago_Pago",
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"Pacific/Palau",
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"Pacific/Pitcairn",
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"Pacific/Pohnpei",
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"Pacific/Port_Moresby",
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"Pacific/Rarotonga",
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"Pacific/Saipan",
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"Pacific/Samoa",
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"Pacific/Tahiti",
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"Pacific/Tarawa",
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"Pacific/Tongatapu",
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"Pacific/Wake",
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"Pacific/Wallis",
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"Pacific/Yap",
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"UTC",
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}
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availableTimezones := make(map[string]string, len(timezones))
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for _, tz := range timezones {
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availableTimezones[tz] = tz
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}
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return availableTimezones
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}
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