libstdc++: Implement std::chrono::current_zone() for Windows [PR108409]

On Windows there is no API to get the current time zone as IANA name,
instead Windows has its own zones. But there exists a mapping provided
by the Unicode Consortium. This patch adds a script to convert the XML
file with the mapping to a lookup table and adds a Windows code path to
use that mapping.

libstdc++-v3/Changelog:

	Implement std::chrono::current_zone() for Windows

	PR libstdc++/108409
	* scripts/gen_windows_zones_map.py: New file, generates
	windows_zones-map.h.
	* src/c++20/windows_zones-map.h: New file, contains the look up
	table.
	* src/c++20/tzdb.cc (tzdb::current_zone): Add Windows code path.

Signed-off-by: Björn Schäpers <bjoern@hazardy.de>
This commit is contained in:
Björn Schäpers
2025-07-10 09:48:19 +02:00
committed by Jonathan Wakely
parent 724f36504a
commit e28494e080
3 changed files with 614 additions and 2 deletions

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@@ -0,0 +1,115 @@
#!/usr/bin/env python3
#
# Script to generate the map for libstdc++ std::chrono::current_zone under Windows.
#
# This file is part of GCC.
#
# GCC is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3, or (at your option) any later
# version.
#
# GCC is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
# To update the Libstdc++ static data in src/c++20/windows_zones-map.h download the latest:
# https://raw.githubusercontent.com/unicode-org/cldr/master/common/supplemental/windowsZones.xml
# Then run this script and save the output to
# src/c++20/windows_zones-map.h
import os
import sys
import xml.etree.ElementTree as et
if len(sys.argv) != 2:
print("Usage: %s <windows zones xml>" % sys.argv[0], file=sys.stderr)
sys.exit(1)
self = os.path.basename(__file__)
print("// Generated by scripts/{}, do not edit.".format(self))
print("""
// Copyright The GNU Toolchain Authors.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
""")
class WindowsZoneMapEntry:
def __init__(self, windows, territory, iana):
self.windows = windows
self.territory = territory
self.iana = iana
def __lt__(self, other):
return (self.windows, self.territory) < (other.windows, other.territory)
windows_zone_map = []
tree = et.parse(sys.argv[1])
xml_zone_map = tree.getroot().find("windowsZones").find("mapTimezones")
for entry in xml_zone_map.iter("mapZone"):
iana = entry.attrib["type"]
space = iana.find(" ")
if space != -1:
iana = iana[0:space]
windows_zone_map.append(WindowsZoneMapEntry(entry.attrib["other"], entry.attrib["territory"], iana))
# Sort so we can use binary search on the array.
windows_zone_map.sort()
# Skip territories which have the same IANA zone as 001, so we can reduce the data.
last_windows_zone = ""
for entry in windows_zone_map[:]:
if entry.windows != last_windows_zone:
if entry.territory != "001":
raise ValueError('Territory "001" not the first one, this breaks assumptions in tzdb.cc!')
last_windows_zone = entry.windows
fallback_iana = entry.iana
else:
if entry.iana == fallback_iana:
windows_zone_map.remove(entry)
print("""struct windows_zone_map_entry
{{
wstring_view windows_name;
wstring_view territory;
string_view iana_name;
}};
static constexpr array<windows_zone_map_entry, {}> windows_zone_map{{
{{""".format(len(windows_zone_map)))
for entry in windows_zone_map:
print(' {{L"{}", L"{}", "{}"}},'.format(entry.windows, entry.territory, entry.iana))
print(""" }
};""")
# src/c++20/tzdb.cc gives an error if this macro is not defined.
# Do this last, so that the generated output is not usable unless we reach here.
print("\n#define _GLIBCXX_WINDOWS_ZONES_MAP_COMPLETE")

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@@ -48,6 +48,8 @@
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# include <psapi.h>
# include <array>
#endif
#if defined __GTHREADS && ATOMIC_POINTER_LOCK_FREE == 2
@@ -1768,6 +1770,98 @@ namespace std::chrono
return nullptr; // not found
}
#ifdef _GLIBCXX_HAVE_WINDOWS_H
string_view
detect_windows_zone() noexcept
{
DYNAMIC_TIME_ZONE_INFORMATION information{};
if (GetDynamicTimeZoneInformation(&information) == TIME_ZONE_ID_INVALID)
return {};
constexpr SYSTEMTIME all_zero_time{};
const wstring_view zone_name{ information.TimeZoneKeyName };
auto equal = [](const SYSTEMTIME &lhs, const SYSTEMTIME &rhs) noexcept
{ return memcmp(&lhs, &rhs, sizeof(SYSTEMTIME)) == 0; };
// The logic is copied from icu, couldn't find the source.
// Detect if DST is disabled.
if (information.DynamicDaylightTimeDisabled
&& equal(information.StandardDate, information.DaylightDate)
&& ((!zone_name.empty()
&& equal(information.StandardDate, all_zero_time))
|| (zone_name.empty()
&& !equal(information.StandardDate, all_zero_time))))
{
if (information.Bias == 0)
return "Etc/UTC";
if (information.Bias % 60 != 0)
// If the offset is not in full hours, we can't do anything really.
return {};
const auto raw_index = information.Bias / 60;
// The bias added to the local time equals UTC. And GMT+X corresponds
// to UTC-X, the sign is negated. Thus we can use the hourly bias as
// an index into an array.
if (raw_index < 0 && raw_index >= -14)
{
static constexpr array<string_view, 14> table{
"Etc/GMT-1", "Etc/GMT-2", "Etc/GMT-3", "Etc/GMT-4",
"Etc/GMT-5", "Etc/GMT-6", "Etc/GMT-7", "Etc/GMT-8",
"Etc/GMT-9", "Etc/GMT-10", "Etc/GMT-11", "Etc/GMT-12",
"Etc/GMT-13", "Etc/GMT-14"
};
return table[-raw_index - 1];
}
else if (raw_index > 0 && raw_index <= 12)
{
static constexpr array<string_view, 12> table{
"Etc/GMT+1", "Etc/GMT+2", "Etc/GMT+3", "Etc/GMT+4",
"Etc/GMT+5", "Etc/GMT+6", "Etc/GMT+7", "Etc/GMT+8",
"Etc/GMT+9", "Etc/GMT+10", "Etc/GMT+11", "Etc/GMT+12"
};
return table[raw_index - 1];
}
return {};
}
#include "windows_zones-map.h"
#ifndef _GLIBCXX_WINDOWS_ZONES_MAP_COMPLETE
# error "Invalid windows_zones map"
#endif
const auto zone_range
= ranges::equal_range(windows_zone_map, zone_name, {},
&windows_zone_map_entry::windows_name);
const auto size = ranges::size(zone_range);
if (size == 0)
// Unknown zone, we can't detect anything.
return {};
if (size == 1)
// Some zones have only one territory, use the quick path.
return zone_range.front().iana_name;
const auto geo_id = GetUserGeoID(GEOCLASS_NATION);
// We ask for a 2-letter country code plus the zero terminator. "001" is
// only contained in the zone map, not returned by GetGeoInfoW.
wchar_t territory[3] = {};
if (GetGeoInfoW(geo_id, GEO_ISO2, territory, 3, 0) == 0)
// Couldn't detect the territory, fallback to "001", which is the first
// entry.
return zone_range.front().iana_name;
const auto iter = ranges::lower_bound(
zone_range, territory, {}, &windows_zone_map_entry::territory);
if (iter == zone_range.end() || iter->territory != territory)
// Territory not within the the map, use "001".
return zone_range.front().iana_name;
return iter->iana_name;
}
#endif
} // namespace
// Implementation of std::chrono::tzdb::locate_zone(string_view).
@@ -1790,7 +1884,7 @@ namespace std::chrono
{
// TODO cache this function's result?
#ifndef _AIX
#if !defined(_AIX) && !defined(_GLIBCXX_HAVE_WINDOWS_H)
// Repeat the preprocessor condition used by filesystem::read_symlink,
// to avoid a dependency on src/c++17/fs_ops.o if it won't work anyway.
#if defined(_GLIBCXX_HAVE_READLINK) && defined(_GLIBCXX_HAVE_SYS_STAT_H)
@@ -1847,7 +1941,11 @@ namespace std::chrono
return tz;
}
}
#else
#elif defined(_GLIBCXX_HAVE_WINDOWS_H)
if (auto tz
= do_locate_zone(this->zones, this->links, detect_windows_zone()))
return tz;
#else // defined(_AIX)
// AIX stores current zone in $TZ in /etc/environment but the value
// is typically a POSIX time zone name, not IANA zone.
// https://developer.ibm.com/articles/au-aix-posix/

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@@ -0,0 +1,399 @@
// Generated by scripts/gen_windows_zones_map.py, do not edit.
// Copyright The GNU Toolchain Authors.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
struct windows_zone_map_entry
{
wstring_view windows_name;
wstring_view territory;
string_view iana_name;
};
static constexpr array<windows_zone_map_entry, 361> windows_zone_map{
{
{L"AUS Central Standard Time", L"001", "Australia/Darwin"},
{L"AUS Eastern Standard Time", L"001", "Australia/Sydney"},
{L"Afghanistan Standard Time", L"001", "Asia/Kabul"},
{L"Alaskan Standard Time", L"001", "America/Anchorage"},
{L"Aleutian Standard Time", L"001", "America/Adak"},
{L"Altai Standard Time", L"001", "Asia/Barnaul"},
{L"Arab Standard Time", L"001", "Asia/Riyadh"},
{L"Arab Standard Time", L"BH", "Asia/Bahrain"},
{L"Arab Standard Time", L"KW", "Asia/Kuwait"},
{L"Arab Standard Time", L"QA", "Asia/Qatar"},
{L"Arab Standard Time", L"YE", "Asia/Aden"},
{L"Arabian Standard Time", L"001", "Asia/Dubai"},
{L"Arabian Standard Time", L"OM", "Asia/Muscat"},
{L"Arabian Standard Time", L"ZZ", "Etc/GMT-4"},
{L"Arabic Standard Time", L"001", "Asia/Baghdad"},
{L"Argentina Standard Time", L"001", "America/Buenos_Aires"},
{L"Astrakhan Standard Time", L"001", "Europe/Astrakhan"},
{L"Atlantic Standard Time", L"001", "America/Halifax"},
{L"Atlantic Standard Time", L"BM", "Atlantic/Bermuda"},
{L"Atlantic Standard Time", L"GL", "America/Thule"},
{L"Aus Central W. Standard Time", L"001", "Australia/Eucla"},
{L"Azerbaijan Standard Time", L"001", "Asia/Baku"},
{L"Azores Standard Time", L"001", "Atlantic/Azores"},
{L"Azores Standard Time", L"GL", "America/Scoresbysund"},
{L"Bahia Standard Time", L"001", "America/Bahia"},
{L"Bangladesh Standard Time", L"001", "Asia/Dhaka"},
{L"Bangladesh Standard Time", L"BT", "Asia/Thimphu"},
{L"Belarus Standard Time", L"001", "Europe/Minsk"},
{L"Bougainville Standard Time", L"001", "Pacific/Bougainville"},
{L"Canada Central Standard Time", L"001", "America/Regina"},
{L"Cape Verde Standard Time", L"001", "Atlantic/Cape_Verde"},
{L"Cape Verde Standard Time", L"ZZ", "Etc/GMT+1"},
{L"Caucasus Standard Time", L"001", "Asia/Yerevan"},
{L"Cen. Australia Standard Time", L"001", "Australia/Adelaide"},
{L"Central America Standard Time", L"001", "America/Guatemala"},
{L"Central America Standard Time", L"BZ", "America/Belize"},
{L"Central America Standard Time", L"CR", "America/Costa_Rica"},
{L"Central America Standard Time", L"EC", "Pacific/Galapagos"},
{L"Central America Standard Time", L"HN", "America/Tegucigalpa"},
{L"Central America Standard Time", L"NI", "America/Managua"},
{L"Central America Standard Time", L"SV", "America/El_Salvador"},
{L"Central America Standard Time", L"ZZ", "Etc/GMT+6"},
{L"Central Asia Standard Time", L"001", "Asia/Bishkek"},
{L"Central Asia Standard Time", L"AQ", "Antarctica/Vostok"},
{L"Central Asia Standard Time", L"CN", "Asia/Urumqi"},
{L"Central Asia Standard Time", L"IO", "Indian/Chagos"},
{L"Central Asia Standard Time", L"ZZ", "Etc/GMT-6"},
{L"Central Brazilian Standard Time", L"001", "America/Cuiaba"},
{L"Central Europe Standard Time", L"001", "Europe/Budapest"},
{L"Central Europe Standard Time", L"AL", "Europe/Tirane"},
{L"Central Europe Standard Time", L"CZ", "Europe/Prague"},
{L"Central Europe Standard Time", L"ME", "Europe/Podgorica"},
{L"Central Europe Standard Time", L"RS", "Europe/Belgrade"},
{L"Central Europe Standard Time", L"SI", "Europe/Ljubljana"},
{L"Central Europe Standard Time", L"SK", "Europe/Bratislava"},
{L"Central European Standard Time", L"001", "Europe/Warsaw"},
{L"Central European Standard Time", L"BA", "Europe/Sarajevo"},
{L"Central European Standard Time", L"HR", "Europe/Zagreb"},
{L"Central European Standard Time", L"MK", "Europe/Skopje"},
{L"Central Pacific Standard Time", L"001", "Pacific/Guadalcanal"},
{L"Central Pacific Standard Time", L"AQ", "Antarctica/Casey"},
{L"Central Pacific Standard Time", L"FM", "Pacific/Ponape"},
{L"Central Pacific Standard Time", L"NC", "Pacific/Noumea"},
{L"Central Pacific Standard Time", L"VU", "Pacific/Efate"},
{L"Central Pacific Standard Time", L"ZZ", "Etc/GMT-11"},
{L"Central Standard Time", L"001", "America/Chicago"},
{L"Central Standard Time", L"CA", "America/Winnipeg"},
{L"Central Standard Time", L"MX", "America/Matamoros"},
{L"Central Standard Time (Mexico)", L"001", "America/Mexico_City"},
{L"Chatham Islands Standard Time", L"001", "Pacific/Chatham"},
{L"China Standard Time", L"001", "Asia/Shanghai"},
{L"China Standard Time", L"HK", "Asia/Hong_Kong"},
{L"China Standard Time", L"MO", "Asia/Macau"},
{L"Cuba Standard Time", L"001", "America/Havana"},
{L"Dateline Standard Time", L"001", "Etc/GMT+12"},
{L"E. Africa Standard Time", L"001", "Africa/Nairobi"},
{L"E. Africa Standard Time", L"AQ", "Antarctica/Syowa"},
{L"E. Africa Standard Time", L"DJ", "Africa/Djibouti"},
{L"E. Africa Standard Time", L"ER", "Africa/Asmera"},
{L"E. Africa Standard Time", L"ET", "Africa/Addis_Ababa"},
{L"E. Africa Standard Time", L"KM", "Indian/Comoro"},
{L"E. Africa Standard Time", L"MG", "Indian/Antananarivo"},
{L"E. Africa Standard Time", L"SO", "Africa/Mogadishu"},
{L"E. Africa Standard Time", L"TZ", "Africa/Dar_es_Salaam"},
{L"E. Africa Standard Time", L"UG", "Africa/Kampala"},
{L"E. Africa Standard Time", L"YT", "Indian/Mayotte"},
{L"E. Africa Standard Time", L"ZZ", "Etc/GMT-3"},
{L"E. Australia Standard Time", L"001", "Australia/Brisbane"},
{L"E. Europe Standard Time", L"001", "Europe/Chisinau"},
{L"E. South America Standard Time", L"001", "America/Sao_Paulo"},
{L"Easter Island Standard Time", L"001", "Pacific/Easter"},
{L"Eastern Standard Time", L"001", "America/New_York"},
{L"Eastern Standard Time", L"BS", "America/Nassau"},
{L"Eastern Standard Time", L"CA", "America/Toronto"},
{L"Eastern Standard Time (Mexico)", L"001", "America/Cancun"},
{L"Egypt Standard Time", L"001", "Africa/Cairo"},
{L"Ekaterinburg Standard Time", L"001", "Asia/Yekaterinburg"},
{L"FLE Standard Time", L"001", "Europe/Kiev"},
{L"FLE Standard Time", L"AX", "Europe/Mariehamn"},
{L"FLE Standard Time", L"BG", "Europe/Sofia"},
{L"FLE Standard Time", L"EE", "Europe/Tallinn"},
{L"FLE Standard Time", L"FI", "Europe/Helsinki"},
{L"FLE Standard Time", L"LT", "Europe/Vilnius"},
{L"FLE Standard Time", L"LV", "Europe/Riga"},
{L"Fiji Standard Time", L"001", "Pacific/Fiji"},
{L"GMT Standard Time", L"001", "Europe/London"},
{L"GMT Standard Time", L"ES", "Atlantic/Canary"},
{L"GMT Standard Time", L"FO", "Atlantic/Faeroe"},
{L"GMT Standard Time", L"GG", "Europe/Guernsey"},
{L"GMT Standard Time", L"IE", "Europe/Dublin"},
{L"GMT Standard Time", L"IM", "Europe/Isle_of_Man"},
{L"GMT Standard Time", L"JE", "Europe/Jersey"},
{L"GMT Standard Time", L"PT", "Europe/Lisbon"},
{L"GTB Standard Time", L"001", "Europe/Bucharest"},
{L"GTB Standard Time", L"CY", "Asia/Nicosia"},
{L"GTB Standard Time", L"GR", "Europe/Athens"},
{L"Georgian Standard Time", L"001", "Asia/Tbilisi"},
{L"Greenland Standard Time", L"001", "America/Godthab"},
{L"Greenwich Standard Time", L"001", "Atlantic/Reykjavik"},
{L"Greenwich Standard Time", L"BF", "Africa/Ouagadougou"},
{L"Greenwich Standard Time", L"CI", "Africa/Abidjan"},
{L"Greenwich Standard Time", L"GH", "Africa/Accra"},
{L"Greenwich Standard Time", L"GL", "America/Danmarkshavn"},
{L"Greenwich Standard Time", L"GM", "Africa/Banjul"},
{L"Greenwich Standard Time", L"GN", "Africa/Conakry"},
{L"Greenwich Standard Time", L"GW", "Africa/Bissau"},
{L"Greenwich Standard Time", L"LR", "Africa/Monrovia"},
{L"Greenwich Standard Time", L"ML", "Africa/Bamako"},
{L"Greenwich Standard Time", L"MR", "Africa/Nouakchott"},
{L"Greenwich Standard Time", L"SH", "Atlantic/St_Helena"},
{L"Greenwich Standard Time", L"SL", "Africa/Freetown"},
{L"Greenwich Standard Time", L"SN", "Africa/Dakar"},
{L"Greenwich Standard Time", L"TG", "Africa/Lome"},
{L"Haiti Standard Time", L"001", "America/Port-au-Prince"},
{L"Hawaiian Standard Time", L"001", "Pacific/Honolulu"},
{L"Hawaiian Standard Time", L"CK", "Pacific/Rarotonga"},
{L"Hawaiian Standard Time", L"PF", "Pacific/Tahiti"},
{L"Hawaiian Standard Time", L"ZZ", "Etc/GMT+10"},
{L"India Standard Time", L"001", "Asia/Calcutta"},
{L"Iran Standard Time", L"001", "Asia/Tehran"},
{L"Israel Standard Time", L"001", "Asia/Jerusalem"},
{L"Jordan Standard Time", L"001", "Asia/Amman"},
{L"Kaliningrad Standard Time", L"001", "Europe/Kaliningrad"},
{L"Korea Standard Time", L"001", "Asia/Seoul"},
{L"Libya Standard Time", L"001", "Africa/Tripoli"},
{L"Line Islands Standard Time", L"001", "Pacific/Kiritimati"},
{L"Line Islands Standard Time", L"ZZ", "Etc/GMT-14"},
{L"Lord Howe Standard Time", L"001", "Australia/Lord_Howe"},
{L"Magadan Standard Time", L"001", "Asia/Magadan"},
{L"Magallanes Standard Time", L"001", "America/Punta_Arenas"},
{L"Marquesas Standard Time", L"001", "Pacific/Marquesas"},
{L"Mauritius Standard Time", L"001", "Indian/Mauritius"},
{L"Mauritius Standard Time", L"RE", "Indian/Reunion"},
{L"Mauritius Standard Time", L"SC", "Indian/Mahe"},
{L"Middle East Standard Time", L"001", "Asia/Beirut"},
{L"Montevideo Standard Time", L"001", "America/Montevideo"},
{L"Morocco Standard Time", L"001", "Africa/Casablanca"},
{L"Morocco Standard Time", L"EH", "Africa/El_Aaiun"},
{L"Mountain Standard Time", L"001", "America/Denver"},
{L"Mountain Standard Time", L"CA", "America/Edmonton"},
{L"Mountain Standard Time", L"MX", "America/Ciudad_Juarez"},
{L"Mountain Standard Time (Mexico)", L"001", "America/Mazatlan"},
{L"Myanmar Standard Time", L"001", "Asia/Rangoon"},
{L"Myanmar Standard Time", L"CC", "Indian/Cocos"},
{L"N. Central Asia Standard Time", L"001", "Asia/Novosibirsk"},
{L"Namibia Standard Time", L"001", "Africa/Windhoek"},
{L"Nepal Standard Time", L"001", "Asia/Katmandu"},
{L"New Zealand Standard Time", L"001", "Pacific/Auckland"},
{L"New Zealand Standard Time", L"AQ", "Antarctica/McMurdo"},
{L"Newfoundland Standard Time", L"001", "America/St_Johns"},
{L"Norfolk Standard Time", L"001", "Pacific/Norfolk"},
{L"North Asia East Standard Time", L"001", "Asia/Irkutsk"},
{L"North Asia Standard Time", L"001", "Asia/Krasnoyarsk"},
{L"North Korea Standard Time", L"001", "Asia/Pyongyang"},
{L"Omsk Standard Time", L"001", "Asia/Omsk"},
{L"Pacific SA Standard Time", L"001", "America/Santiago"},
{L"Pacific Standard Time", L"001", "America/Los_Angeles"},
{L"Pacific Standard Time", L"CA", "America/Vancouver"},
{L"Pacific Standard Time (Mexico)", L"001", "America/Tijuana"},
{L"Pakistan Standard Time", L"001", "Asia/Karachi"},
{L"Paraguay Standard Time", L"001", "America/Asuncion"},
{L"Qyzylorda Standard Time", L"001", "Asia/Qyzylorda"},
{L"Romance Standard Time", L"001", "Europe/Paris"},
{L"Romance Standard Time", L"BE", "Europe/Brussels"},
{L"Romance Standard Time", L"DK", "Europe/Copenhagen"},
{L"Romance Standard Time", L"ES", "Europe/Madrid"},
{L"Russia Time Zone 10", L"001", "Asia/Srednekolymsk"},
{L"Russia Time Zone 11", L"001", "Asia/Kamchatka"},
{L"Russia Time Zone 3", L"001", "Europe/Samara"},
{L"Russian Standard Time", L"001", "Europe/Moscow"},
{L"Russian Standard Time", L"UA", "Europe/Simferopol"},
{L"SA Eastern Standard Time", L"001", "America/Cayenne"},
{L"SA Eastern Standard Time", L"AQ", "Antarctica/Rothera"},
{L"SA Eastern Standard Time", L"BR", "America/Fortaleza"},
{L"SA Eastern Standard Time", L"FK", "Atlantic/Stanley"},
{L"SA Eastern Standard Time", L"SR", "America/Paramaribo"},
{L"SA Eastern Standard Time", L"ZZ", "Etc/GMT+3"},
{L"SA Pacific Standard Time", L"001", "America/Bogota"},
{L"SA Pacific Standard Time", L"BR", "America/Rio_Branco"},
{L"SA Pacific Standard Time", L"CA", "America/Coral_Harbour"},
{L"SA Pacific Standard Time", L"EC", "America/Guayaquil"},
{L"SA Pacific Standard Time", L"JM", "America/Jamaica"},
{L"SA Pacific Standard Time", L"KY", "America/Cayman"},
{L"SA Pacific Standard Time", L"PA", "America/Panama"},
{L"SA Pacific Standard Time", L"PE", "America/Lima"},
{L"SA Pacific Standard Time", L"ZZ", "Etc/GMT+5"},
{L"SA Western Standard Time", L"001", "America/La_Paz"},
{L"SA Western Standard Time", L"AG", "America/Antigua"},
{L"SA Western Standard Time", L"AI", "America/Anguilla"},
{L"SA Western Standard Time", L"AW", "America/Aruba"},
{L"SA Western Standard Time", L"BB", "America/Barbados"},
{L"SA Western Standard Time", L"BL", "America/St_Barthelemy"},
{L"SA Western Standard Time", L"BQ", "America/Kralendijk"},
{L"SA Western Standard Time", L"BR", "America/Manaus"},
{L"SA Western Standard Time", L"CA", "America/Blanc-Sablon"},
{L"SA Western Standard Time", L"CW", "America/Curacao"},
{L"SA Western Standard Time", L"DM", "America/Dominica"},
{L"SA Western Standard Time", L"DO", "America/Santo_Domingo"},
{L"SA Western Standard Time", L"GD", "America/Grenada"},
{L"SA Western Standard Time", L"GP", "America/Guadeloupe"},
{L"SA Western Standard Time", L"GY", "America/Guyana"},
{L"SA Western Standard Time", L"KN", "America/St_Kitts"},
{L"SA Western Standard Time", L"LC", "America/St_Lucia"},
{L"SA Western Standard Time", L"MF", "America/Marigot"},
{L"SA Western Standard Time", L"MQ", "America/Martinique"},
{L"SA Western Standard Time", L"MS", "America/Montserrat"},
{L"SA Western Standard Time", L"PR", "America/Puerto_Rico"},
{L"SA Western Standard Time", L"SX", "America/Lower_Princes"},
{L"SA Western Standard Time", L"TT", "America/Port_of_Spain"},
{L"SA Western Standard Time", L"VC", "America/St_Vincent"},
{L"SA Western Standard Time", L"VG", "America/Tortola"},
{L"SA Western Standard Time", L"VI", "America/St_Thomas"},
{L"SA Western Standard Time", L"ZZ", "Etc/GMT+4"},
{L"SE Asia Standard Time", L"001", "Asia/Bangkok"},
{L"SE Asia Standard Time", L"AQ", "Antarctica/Davis"},
{L"SE Asia Standard Time", L"CX", "Indian/Christmas"},
{L"SE Asia Standard Time", L"ID", "Asia/Jakarta"},
{L"SE Asia Standard Time", L"KH", "Asia/Phnom_Penh"},
{L"SE Asia Standard Time", L"LA", "Asia/Vientiane"},
{L"SE Asia Standard Time", L"VN", "Asia/Saigon"},
{L"SE Asia Standard Time", L"ZZ", "Etc/GMT-7"},
{L"Saint Pierre Standard Time", L"001", "America/Miquelon"},
{L"Sakhalin Standard Time", L"001", "Asia/Sakhalin"},
{L"Samoa Standard Time", L"001", "Pacific/Apia"},
{L"Sao Tome Standard Time", L"001", "Africa/Sao_Tome"},
{L"Saratov Standard Time", L"001", "Europe/Saratov"},
{L"Singapore Standard Time", L"001", "Asia/Singapore"},
{L"Singapore Standard Time", L"BN", "Asia/Brunei"},
{L"Singapore Standard Time", L"ID", "Asia/Makassar"},
{L"Singapore Standard Time", L"MY", "Asia/Kuala_Lumpur"},
{L"Singapore Standard Time", L"PH", "Asia/Manila"},
{L"Singapore Standard Time", L"ZZ", "Etc/GMT-8"},
{L"South Africa Standard Time", L"001", "Africa/Johannesburg"},
{L"South Africa Standard Time", L"BI", "Africa/Bujumbura"},
{L"South Africa Standard Time", L"BW", "Africa/Gaborone"},
{L"South Africa Standard Time", L"CD", "Africa/Lubumbashi"},
{L"South Africa Standard Time", L"LS", "Africa/Maseru"},
{L"South Africa Standard Time", L"MW", "Africa/Blantyre"},
{L"South Africa Standard Time", L"MZ", "Africa/Maputo"},
{L"South Africa Standard Time", L"RW", "Africa/Kigali"},
{L"South Africa Standard Time", L"SZ", "Africa/Mbabane"},
{L"South Africa Standard Time", L"ZM", "Africa/Lusaka"},
{L"South Africa Standard Time", L"ZW", "Africa/Harare"},
{L"South Africa Standard Time", L"ZZ", "Etc/GMT-2"},
{L"South Sudan Standard Time", L"001", "Africa/Juba"},
{L"Sri Lanka Standard Time", L"001", "Asia/Colombo"},
{L"Sudan Standard Time", L"001", "Africa/Khartoum"},
{L"Syria Standard Time", L"001", "Asia/Damascus"},
{L"Taipei Standard Time", L"001", "Asia/Taipei"},
{L"Tasmania Standard Time", L"001", "Australia/Hobart"},
{L"Tocantins Standard Time", L"001", "America/Araguaina"},
{L"Tokyo Standard Time", L"001", "Asia/Tokyo"},
{L"Tokyo Standard Time", L"ID", "Asia/Jayapura"},
{L"Tokyo Standard Time", L"PW", "Pacific/Palau"},
{L"Tokyo Standard Time", L"TL", "Asia/Dili"},
{L"Tokyo Standard Time", L"ZZ", "Etc/GMT-9"},
{L"Tomsk Standard Time", L"001", "Asia/Tomsk"},
{L"Tonga Standard Time", L"001", "Pacific/Tongatapu"},
{L"Transbaikal Standard Time", L"001", "Asia/Chita"},
{L"Turkey Standard Time", L"001", "Europe/Istanbul"},
{L"Turks And Caicos Standard Time", L"001", "America/Grand_Turk"},
{L"US Eastern Standard Time", L"001", "America/Indianapolis"},
{L"US Mountain Standard Time", L"001", "America/Phoenix"},
{L"US Mountain Standard Time", L"CA", "America/Creston"},
{L"US Mountain Standard Time", L"MX", "America/Hermosillo"},
{L"US Mountain Standard Time", L"ZZ", "Etc/GMT+7"},
{L"UTC", L"001", "Etc/UTC"},
{L"UTC+12", L"001", "Etc/GMT-12"},
{L"UTC+12", L"KI", "Pacific/Tarawa"},
{L"UTC+12", L"MH", "Pacific/Majuro"},
{L"UTC+12", L"NR", "Pacific/Nauru"},
{L"UTC+12", L"TV", "Pacific/Funafuti"},
{L"UTC+12", L"UM", "Pacific/Wake"},
{L"UTC+12", L"WF", "Pacific/Wallis"},
{L"UTC+13", L"001", "Etc/GMT-13"},
{L"UTC+13", L"KI", "Pacific/Enderbury"},
{L"UTC+13", L"TK", "Pacific/Fakaofo"},
{L"UTC-02", L"001", "Etc/GMT+2"},
{L"UTC-02", L"BR", "America/Noronha"},
{L"UTC-02", L"GS", "Atlantic/South_Georgia"},
{L"UTC-08", L"001", "Etc/GMT+8"},
{L"UTC-08", L"PN", "Pacific/Pitcairn"},
{L"UTC-09", L"001", "Etc/GMT+9"},
{L"UTC-09", L"PF", "Pacific/Gambier"},
{L"UTC-11", L"001", "Etc/GMT+11"},
{L"UTC-11", L"AS", "Pacific/Pago_Pago"},
{L"UTC-11", L"NU", "Pacific/Niue"},
{L"UTC-11", L"UM", "Pacific/Midway"},
{L"Ulaanbaatar Standard Time", L"001", "Asia/Ulaanbaatar"},
{L"Venezuela Standard Time", L"001", "America/Caracas"},
{L"Vladivostok Standard Time", L"001", "Asia/Vladivostok"},
{L"Volgograd Standard Time", L"001", "Europe/Volgograd"},
{L"W. Australia Standard Time", L"001", "Australia/Perth"},
{L"W. Central Africa Standard Time", L"001", "Africa/Lagos"},
{L"W. Central Africa Standard Time", L"AO", "Africa/Luanda"},
{L"W. Central Africa Standard Time", L"BJ", "Africa/Porto-Novo"},
{L"W. Central Africa Standard Time", L"CD", "Africa/Kinshasa"},
{L"W. Central Africa Standard Time", L"CF", "Africa/Bangui"},
{L"W. Central Africa Standard Time", L"CG", "Africa/Brazzaville"},
{L"W. Central Africa Standard Time", L"CM", "Africa/Douala"},
{L"W. Central Africa Standard Time", L"DZ", "Africa/Algiers"},
{L"W. Central Africa Standard Time", L"GA", "Africa/Libreville"},
{L"W. Central Africa Standard Time", L"GQ", "Africa/Malabo"},
{L"W. Central Africa Standard Time", L"NE", "Africa/Niamey"},
{L"W. Central Africa Standard Time", L"TD", "Africa/Ndjamena"},
{L"W. Central Africa Standard Time", L"TN", "Africa/Tunis"},
{L"W. Central Africa Standard Time", L"ZZ", "Etc/GMT-1"},
{L"W. Europe Standard Time", L"001", "Europe/Berlin"},
{L"W. Europe Standard Time", L"AD", "Europe/Andorra"},
{L"W. Europe Standard Time", L"AT", "Europe/Vienna"},
{L"W. Europe Standard Time", L"CH", "Europe/Zurich"},
{L"W. Europe Standard Time", L"GI", "Europe/Gibraltar"},
{L"W. Europe Standard Time", L"IT", "Europe/Rome"},
{L"W. Europe Standard Time", L"LI", "Europe/Vaduz"},
{L"W. Europe Standard Time", L"LU", "Europe/Luxembourg"},
{L"W. Europe Standard Time", L"MC", "Europe/Monaco"},
{L"W. Europe Standard Time", L"MT", "Europe/Malta"},
{L"W. Europe Standard Time", L"NL", "Europe/Amsterdam"},
{L"W. Europe Standard Time", L"NO", "Europe/Oslo"},
{L"W. Europe Standard Time", L"SE", "Europe/Stockholm"},
{L"W. Europe Standard Time", L"SJ", "Arctic/Longyearbyen"},
{L"W. Europe Standard Time", L"SM", "Europe/San_Marino"},
{L"W. Europe Standard Time", L"VA", "Europe/Vatican"},
{L"W. Mongolia Standard Time", L"001", "Asia/Hovd"},
{L"West Asia Standard Time", L"001", "Asia/Tashkent"},
{L"West Asia Standard Time", L"AQ", "Antarctica/Mawson"},
{L"West Asia Standard Time", L"KZ", "Asia/Oral"},
{L"West Asia Standard Time", L"MV", "Indian/Maldives"},
{L"West Asia Standard Time", L"TF", "Indian/Kerguelen"},
{L"West Asia Standard Time", L"TJ", "Asia/Dushanbe"},
{L"West Asia Standard Time", L"TM", "Asia/Ashgabat"},
{L"West Asia Standard Time", L"ZZ", "Etc/GMT-5"},
{L"West Bank Standard Time", L"001", "Asia/Hebron"},
{L"West Pacific Standard Time", L"001", "Pacific/Port_Moresby"},
{L"West Pacific Standard Time", L"AQ", "Antarctica/DumontDUrville"},
{L"West Pacific Standard Time", L"FM", "Pacific/Truk"},
{L"West Pacific Standard Time", L"GU", "Pacific/Guam"},
{L"West Pacific Standard Time", L"MP", "Pacific/Saipan"},
{L"West Pacific Standard Time", L"ZZ", "Etc/GMT-10"},
{L"Yakutsk Standard Time", L"001", "Asia/Yakutsk"},
{L"Yukon Standard Time", L"001", "America/Whitehorse"},
}
};
#define _GLIBCXX_WINDOWS_ZONES_MAP_COMPLETE