Use array with linear search rather than a hash map.

This commit is contained in:
gingerBill
2025-01-05 13:08:01 +00:00
parent 4d63ee0794
commit d718db473c
+153 -141
View File
@@ -11,146 +11,147 @@ TZ_Abbrev :: struct {
dst: string, dst: string,
} }
tz_abbrevs := map[string]TZ_Abbrev { @(rodata)
"Egypt Standard Time" = {"EET", "EEST"}, // Africa/Cairo tz_abbrevs := [?]struct{key: string, value: TZ_Abbrev}{
"Morocco Standard Time" = {"+00", "+01"}, // Africa/Casablanca {"Egypt Standard Time", {"EET", "EEST"}}, // Africa/Cairo
"South Africa Standard Time" = {"SAST", "SAST"}, // Africa/Johannesburg {"Morocco Standard Time", {"+00", "+01"}}, // Africa/Casablanca
"South Sudan Standard Time" = {"CAT", "CAT"}, // Africa/Juba {"South Africa Standard Time", {"SAST", "SAST"}}, // Africa/Johannesburg
"Sudan Standard Time" = {"CAT", "CAT"}, // Africa/Khartoum {"South Sudan Standard Time", {"CAT", "CAT"}}, // Africa/Juba
"W. Central Africa Standard Time" = {"WAT", "WAT"}, // Africa/Lagos {"Sudan Standard Time", {"CAT", "CAT"}}, // Africa/Khartoum
"E. Africa Standard Time" = {"EAT", "EAT"}, // Africa/Nairobi {"W. Central Africa Standard Time", {"WAT", "WAT"}}, // Africa/Lagos
"Sao Tome Standard Time" = {"GMT", "GMT"}, // Africa/Sao_Tome {"E. Africa Standard Time", {"EAT", "EAT"}}, // Africa/Nairobi
"Libya Standard Time" = {"EET", "EET"}, // Africa/Tripoli {"Sao Tome Standard Time", {"GMT", "GMT"}}, // Africa/Sao_Tome
"Namibia Standard Time" = {"CAT", "CAT"}, // Africa/Windhoek {"Libya Standard Time", {"EET", "EET"}}, // Africa/Tripoli
"Aleutian Standard Time" = {"HST", "HDT"}, // America/Adak {"Namibia Standard Time", {"CAT", "CAT"}}, // Africa/Windhoek
"Alaskan Standard Time" = {"AKST", "AKDT"}, // America/Anchorage {"Aleutian Standard Time", {"HST", "HDT"}}, // America/Adak
"Tocantins Standard Time" = {"-03", "-03"}, // America/Araguaina {"Alaskan Standard Time", {"AKST", "AKDT"}}, // America/Anchorage
"Paraguay Standard Time" = {"-04", "-03"}, // America/Asuncion {"Tocantins Standard Time", {"-03", "-03"}}, // America/Araguaina
"Bahia Standard Time" = {"-03", "-03"}, // America/Bahia {"Paraguay Standard Time", {"-04", "-03"}}, // America/Asuncion
"SA Pacific Standard Time" = {"-05", "-05"}, // America/Bogota {"Bahia Standard Time", {"-03", "-03"}}, // America/Bahia
"Argentina Standard Time" = {"-03", "-03"}, // America/Buenos_Aires {"SA Pacific Standard Time", {"-05", "-05"}}, // America/Bogota
"Eastern Standard Time (Mexico)" = {"EST", "EST"}, // America/Cancun {"Argentina Standard Time", {"-03", "-03"}}, // America/Buenos_Aires
"Venezuela Standard Time" = {"-04", "-04"}, // America/Caracas {"Eastern Standard Time (Mexico)", {"EST", "EST"}}, // America/Cancun
"SA Eastern Standard Time" = {"-03", "-03"}, // America/Cayenne {"Venezuela Standard Time", {"-04", "-04"}}, // America/Caracas
"Central Standard Time" = {"CST", "CDT"}, // America/Chicago {"SA Eastern Standard Time", {"-03", "-03"}}, // America/Cayenne
"Central Brazilian Standard Time" = {"-04", "-04"}, // America/Cuiaba {"Central Standard Time", {"CST", "CDT"}}, // America/Chicago
"Mountain Standard Time" = {"MST", "MDT"}, // America/Denver {"Central Brazilian Standard Time", {"-04", "-04"}}, // America/Cuiaba
"Greenland Standard Time" = {"-03", "-02"}, // America/Godthab {"Mountain Standard Time", {"MST", "MDT"}}, // America/Denver
"Turks And Caicos Standard Time" = {"EST", "EDT"}, // America/Grand_Turk {"Greenland Standard Time", {"-03", "-02"}}, // America/Godthab
"Central America Standard Time" = {"CST", "CST"}, // America/Guatemala {"Turks And Caicos Standard Time", {"EST", "EDT"}}, // America/Grand_Turk
"Atlantic Standard Time" = {"AST", "ADT"}, // America/Halifax {"Central America Standard Time", {"CST", "CST"}}, // America/Guatemala
"Cuba Standard Time" = {"CST", "CDT"}, // America/Havana {"Atlantic Standard Time", {"AST", "ADT"}}, // America/Halifax
"US Eastern Standard Time" = {"EST", "EDT"}, // America/Indianapolis {"Cuba Standard Time", {"CST", "CDT"}}, // America/Havana
"SA Western Standard Time" = {"-04", "-04"}, // America/La_Paz {"US Eastern Standard Time", {"EST", "EDT"}}, // America/Indianapolis
"Pacific Standard Time" = {"PST", "PDT"}, // America/Los_Angeles {"SA Western Standard Time", {"-04", "-04"}}, // America/La_Paz
"Mountain Standard Time (Mexico)" = {"MST", "MST"}, // America/Mazatlan {"Pacific Standard Time", {"PST", "PDT"}}, // America/Los_Angeles
"Central Standard Time (Mexico)" = {"CST", "CST"}, // America/Mexico_City {"Mountain Standard Time (Mexico)", {"MST", "MST"}}, // America/Mazatlan
"Saint Pierre Standard Time" = {"-03", "-02"}, // America/Miquelon {"Central Standard Time (Mexico)", {"CST", "CST"}}, // America/Mexico_City
"Montevideo Standard Time" = {"-03", "-03"}, // America/Montevideo {"Saint Pierre Standard Time", {"-03", "-02"}}, // America/Miquelon
"Eastern Standard Time" = {"EST", "EDT"}, // America/New_York {"Montevideo Standard Time", {"-03", "-03"}}, // America/Montevideo
"US Mountain Standard Time" = {"MST", "MST"}, // America/Phoenix {"Eastern Standard Time", {"EST", "EDT"}}, // America/New_York
"Haiti Standard Time" = {"EST", "EDT"}, // America/Port-au-Prince {"US Mountain Standard Time", {"MST", "MST"}}, // America/Phoenix
"Magallanes Standard Time" = {"-03", "-03"}, // America/Punta_Arenas {"Haiti Standard Time", {"EST", "EDT"}}, // America/Port-au-Prince
"Canada Central Standard Time" = {"CST", "CST"}, // America/Regina {"Magallanes Standard Time", {"-03", "-03"}}, // America/Punta_Arenas
"Pacific SA Standard Time" = {"-04", "-03"}, // America/Santiago {"Canada Central Standard Time", {"CST", "CST"}}, // America/Regina
"E. South America Standard Time" = {"-03", "-03"}, // America/Sao_Paulo {"Pacific SA Standard Time", {"-04", "-03"}}, // America/Santiago
"Newfoundland Standard Time" = {"NST", "NDT"}, // America/St_Johns {"E. South America Standard Time", {"-03", "-03"}}, // America/Sao_Paulo
"Pacific Standard Time (Mexico)" = {"PST", "PDT"}, // America/Tijuana {"Newfoundland Standard Time", {"NST", "NDT"}}, // America/St_Johns
"Yukon Standard Time" = {"MST", "MST"}, // America/Whitehorse {"Pacific Standard Time (Mexico)", {"PST", "PDT"}}, // America/Tijuana
"Central Asia Standard Time" = {"+06", "+06"}, // Asia/Almaty {"Yukon Standard Time", {"MST", "MST"}}, // America/Whitehorse
"Jordan Standard Time" = {"+03", "+03"}, // Asia/Amman {"Central Asia Standard Time", {"+06", "+06"}}, // Asia/Almaty
"Arabic Standard Time" = {"+03", "+03"}, // Asia/Baghdad {"Jordan Standard Time", {"+03", "+03"}}, // Asia/Amman
"Azerbaijan Standard Time" = {"+04", "+04"}, // Asia/Baku {"Arabic Standard Time", {"+03", "+03"}}, // Asia/Baghdad
"SE Asia Standard Time" = {"+07", "+07"}, // Asia/Bangkok {"Azerbaijan Standard Time", {"+04", "+04"}}, // Asia/Baku
"Altai Standard Time" = {"+07", "+07"}, // Asia/Barnaul {"SE Asia Standard Time", {"+07", "+07"}}, // Asia/Bangkok
"Middle East Standard Time" = {"EET", "EEST"}, // Asia/Beirut {"Altai Standard Time", {"+07", "+07"}}, // Asia/Barnaul
"India Standard Time" = {"IST", "IST"}, // Asia/Calcutta {"Middle East Standard Time", {"EET", "EEST"}}, // Asia/Beirut
"Transbaikal Standard Time" = {"+09", "+09"}, // Asia/Chita {"India Standard Time", {"IST", "IST"}}, // Asia/Calcutta
"Sri Lanka Standard Time" = {"+0530", "+0530"}, // Asia/Colombo {"Transbaikal Standard Time", {"+09", "+09"}}, // Asia/Chita
"Syria Standard Time" = {"+03", "+03"}, // Asia/Damascus {"Sri Lanka Standard Time", {"+0530", "+0530"}}, // Asia/Colombo
"Bangladesh Standard Time" = {"+06", "+06"}, // Asia/Dhaka {"Syria Standard Time", {"+03", "+03"}}, // Asia/Damascus
"Arabian Standard Time" = {"+04", "+04"}, // Asia/Dubai {"Bangladesh Standard Time", {"+06", "+06"}}, // Asia/Dhaka
"West Bank Standard Time" = {"EET", "EEST"}, // Asia/Hebron {"Arabian Standard Time", {"+04", "+04"}}, // Asia/Dubai
"W. Mongolia Standard Time" = {"+07", "+07"}, // Asia/Hovd {"West Bank Standard Time", {"EET", "EEST"}}, // Asia/Hebron
"North Asia East Standard Time" = {"+08", "+08"}, // Asia/Irkutsk {"W. Mongolia Standard Time", {"+07", "+07"}}, // Asia/Hovd
"Israel Standard Time" = {"IST", "IDT"}, // Asia/Jerusalem {"North Asia East Standard Time", {"+08", "+08"}}, // Asia/Irkutsk
"Afghanistan Standard Time" = {"+0430", "+0430"}, // Asia/Kabul {"Israel Standard Time", {"IST", "IDT"}}, // Asia/Jerusalem
"Russia Time Zone 11" = {"+12", "+12"}, // Asia/Kamchatka {"Afghanistan Standard Time", {"+0430", "+0430"}}, // Asia/Kabul
"Pakistan Standard Time" = {"PKT", "PKT"}, // Asia/Karachi {"Russia Time Zone 11", {"+12", "+12"}}, // Asia/Kamchatka
"Nepal Standard Time" = {"+0545", "+0545"}, // Asia/Katmandu {"Pakistan Standard Time", {"PKT", "PKT"}}, // Asia/Karachi
"North Asia Standard Time" = {"+07", "+07"}, // Asia/Krasnoyarsk {"Nepal Standard Time", {"+0545", "+0545"}}, // Asia/Katmandu
"Magadan Standard Time" = {"+11", "+11"}, // Asia/Magadan {"North Asia Standard Time", {"+07", "+07"}}, // Asia/Krasnoyarsk
"N. Central Asia Standard Time" = {"+07", "+07"}, // Asia/Novosibirsk {"Magadan Standard Time", {"+11", "+11"}}, // Asia/Magadan
"Omsk Standard Time" = {"+06", "+06"}, // Asia/Omsk {"N. Central Asia Standard Time", {"+07", "+07"}}, // Asia/Novosibirsk
"North Korea Standard Time" = {"KST", "KST"}, // Asia/Pyongyang {"Omsk Standard Time", {"+06", "+06"}}, // Asia/Omsk
"Qyzylorda Standard Time" = {"+05", "+05"}, // Asia/Qyzylorda {"North Korea Standard Time", {"KST", "KST"}}, // Asia/Pyongyang
"Myanmar Standard Time" = {"+0630", "+0630"}, // Asia/Rangoon {"Qyzylorda Standard Time", {"+05", "+05"}}, // Asia/Qyzylorda
"Arab Standard Time" = {"+03", "+03"}, // Asia/Riyadh {"Myanmar Standard Time", {"+0630", "+0630"}}, // Asia/Rangoon
"Sakhalin Standard Time" = {"+11", "+11"}, // Asia/Sakhalin {"Arab Standard Time", {"+03", "+03"}}, // Asia/Riyadh
"Korea Standard Time" = {"KST", "KST"}, // Asia/Seoul {"Sakhalin Standard Time", {"+11", "+11"}}, // Asia/Sakhalin
"China Standard Time" = {"CST", "CST"}, // Asia/Shanghai {"Korea Standard Time", {"KST", "KST"}}, // Asia/Seoul
"Singapore Standard Time" = {"+08", "+08"}, // Asia/Singapore {"China Standard Time", {"CST", "CST"}}, // Asia/Shanghai
"Russia Time Zone 10" = {"+11", "+11"}, // Asia/Srednekolymsk {"Singapore Standard Time", {"+08", "+08"}}, // Asia/Singapore
"Taipei Standard Time" = {"CST", "CST"}, // Asia/Taipei {"Russia Time Zone 10", {"+11", "+11"}}, // Asia/Srednekolymsk
"West Asia Standard Time" = {"+05", "+05"}, // Asia/Tashkent {"Taipei Standard Time", {"CST", "CST"}}, // Asia/Taipei
"Georgian Standard Time" = {"+04", "+04"}, // Asia/Tbilisi {"West Asia Standard Time", {"+05", "+05"}}, // Asia/Tashkent
"Iran Standard Time" = {"+0330", "+0330"}, // Asia/Tehran {"Georgian Standard Time", {"+04", "+04"}}, // Asia/Tbilisi
"Tokyo Standard Time" = {"JST", "JST"}, // Asia/Tokyo {"Iran Standard Time", {"+0330", "+0330"}}, // Asia/Tehran
"Tomsk Standard Time" = {"+07", "+07"}, // Asia/Tomsk {"Tokyo Standard Time", {"JST", "JST"}}, // Asia/Tokyo
"Ulaanbaatar Standard Time" = {"+08", "+08"}, // Asia/Ulaanbaatar {"Tomsk Standard Time", {"+07", "+07"}}, // Asia/Tomsk
"Vladivostok Standard Time" = {"+10", "+10"}, // Asia/Vladivostok {"Ulaanbaatar Standard Time", {"+08", "+08"}}, // Asia/Ulaanbaatar
"Yakutsk Standard Time" = {"+09", "+09"}, // Asia/Yakutsk {"Vladivostok Standard Time", {"+10", "+10"}}, // Asia/Vladivostok
"Ekaterinburg Standard Time" = {"+05", "+05"}, // Asia/Yekaterinburg {"Yakutsk Standard Time", {"+09", "+09"}}, // Asia/Yakutsk
"Caucasus Standard Time" = {"+04", "+04"}, // Asia/Yerevan {"Ekaterinburg Standard Time", {"+05", "+05"}}, // Asia/Yekaterinburg
"Azores Standard Time" = {"-01", "+00"}, // Atlantic/Azores {"Caucasus Standard Time", {"+04", "+04"}}, // Asia/Yerevan
"Cape Verde Standard Time" = {"-01", "-01"}, // Atlantic/Cape_Verde {"Azores Standard Time", {"-01", "+00"}}, // Atlantic/Azores
"Greenwich Standard Time" = {"GMT", "GMT"}, // Atlantic/Reykjavik {"Cape Verde Standard Time", {"-01", "-01"}}, // Atlantic/Cape_Verde
"Cen. Australia Standard Time" = {"ACST", "ACDT"}, // Australia/Adelaide {"Greenwich Standard Time", {"GMT", "GMT"}}, // Atlantic/Reykjavik
"E. Australia Standard Time" = {"AEST", "AEST"}, // Australia/Brisbane {"Cen. Australia Standard Time", {"ACST", "ACDT"}}, // Australia/Adelaide
"AUS Central Standard Time" = {"ACST", "ACST"}, // Australia/Darwin {"E. Australia Standard Time", {"AEST", "AEST"}}, // Australia/Brisbane
"Aus Central W. Standard Time" = {"+0845", "+0845"}, // Australia/Eucla {"AUS Central Standard Time", {"ACST", "ACST"}}, // Australia/Darwin
"Tasmania Standard Time" = {"AEST", "AEDT"}, // Australia/Hobart {"Aus Central W. Standard Time", {"+0845", "+0845"}}, // Australia/Eucla
"Lord Howe Standard Time" = {"+1030", "+11"}, // Australia/Lord_Howe {"Tasmania Standard Time", {"AEST", "AEDT"}}, // Australia/Hobart
"W. Australia Standard Time" = {"AWST", "AWST"}, // Australia/Perth {"Lord Howe Standard Time", {"+1030", "+11"}}, // Australia/Lord_Howe
"AUS Eastern Standard Time" = {"AEST", "AEDT"}, // Australia/Sydney {"W. Australia Standard Time", {"AWST", "AWST"}}, // Australia/Perth
"UTC-11" = {"-11", "-11"}, // Etc/GMT+11 {"AUS Eastern Standard Time", {"AEST", "AEDT"}}, // Australia/Sydney
"Dateline Standard Time" = {"-12", "-12"}, // Etc/GMT+12 {"UTC-11", {"-11", "-11"}}, // Etc/GMT+11
"UTC-02" = {"-02", "-02"}, // Etc/GMT+2 {"Dateline Standard Time", {"-12", "-12"}}, // Etc/GMT+12
"UTC-08" = {"-08", "-08"}, // Etc/GMT+8 {"UTC-02", {"-02", "-02"}}, // Etc/GMT+2
"UTC-09" = {"-09", "-09"}, // Etc/GMT+9 {"UTC-08", {"-08", "-08"}}, // Etc/GMT+8
"UTC+12" = {"+12", "+12"}, // Etc/GMT-12 {"UTC-09", {"-09", "-09"}}, // Etc/GMT+9
"UTC+13" = {"+13", "+13"}, // Etc/GMT-13 {"UTC+12", {"+12", "+12"}}, // Etc/GMT-12
"UTC" = {"UTC", "UTC"}, // Etc/UTC {"UTC+13", {"+13", "+13"}}, // Etc/GMT-13
"Astrakhan Standard Time" = {"+04", "+04"}, // Europe/Astrakhan {"UTC", {"UTC", "UTC"}}, // Etc/UTC
"W. Europe Standard Time" = {"CET", "CEST"}, // Europe/Berlin {"Astrakhan Standard Time", {"+04", "+04"}}, // Europe/Astrakhan
"GTB Standard Time" = {"EET", "EEST"}, // Europe/Bucharest {"W. Europe Standard Time", {"CET", "CEST"}}, // Europe/Berlin
"Central Europe Standard Time" = {"CET", "CEST"}, // Europe/Budapest {"GTB Standard Time", {"EET", "EEST"}}, // Europe/Bucharest
"E. Europe Standard Time" = {"EET", "EEST"}, // Europe/Chisinau {"Central Europe Standard Time", {"CET", "CEST"}}, // Europe/Budapest
"Turkey Standard Time" = {"+03", "+03"}, // Europe/Istanbul {"E. Europe Standard Time", {"EET", "EEST"}}, // Europe/Chisinau
"Kaliningrad Standard Time" = {"EET", "EET"}, // Europe/Kaliningrad {"Turkey Standard Time", {"+03", "+03"}}, // Europe/Istanbul
"FLE Standard Time" = {"EET", "EEST"}, // Europe/Kiev {"Kaliningrad Standard Time", {"EET", "EET"}}, // Europe/Kaliningrad
"GMT Standard Time" = {"GMT", "BST"}, // Europe/London {"FLE Standard Time", {"EET", "EEST"}}, // Europe/Kiev
"Belarus Standard Time" = {"+03", "+03"}, // Europe/Minsk {"GMT Standard Time", {"GMT", "BST"}}, // Europe/London
"Russian Standard Time" = {"MSK", "MSK"}, // Europe/Moscow {"Belarus Standard Time", {"+03", "+03"}}, // Europe/Minsk
"Romance Standard Time" = {"CET", "CEST"}, // Europe/Paris {"Russian Standard Time", {"MSK", "MSK"}}, // Europe/Moscow
"Russia Time Zone 3" = {"+04", "+04"}, // Europe/Samara {"Romance Standard Time", {"CET", "CEST"}}, // Europe/Paris
"Saratov Standard Time" = {"+04", "+04"}, // Europe/Saratov {"Russia Time Zone 3", {"+04", "+04"}}, // Europe/Samara
"Volgograd Standard Time" = {"MSK", "MSK"}, // Europe/Volgograd {"Saratov Standard Time", {"+04", "+04"}}, // Europe/Saratov
"Central European Standard Time" = {"CET", "CEST"}, // Europe/Warsaw {"Volgograd Standard Time", {"MSK", "MSK"}}, // Europe/Volgograd
"Mauritius Standard Time" = {"+04", "+04"}, // Indian/Mauritius {"Central European Standard Time", {"CET", "CEST"}}, // Europe/Warsaw
"Samoa Standard Time" = {"+13", "+13"}, // Pacific/Apia {"Mauritius Standard Time", {"+04", "+04"}}, // Indian/Mauritius
"New Zealand Standard Time" = {"NZST", "NZDT"}, // Pacific/Auckland {"Samoa Standard Time", {"+13", "+13"}}, // Pacific/Apia
"Bougainville Standard Time" = {"+11", "+11"}, // Pacific/Bougainville {"New Zealand Standard Time", {"NZST", "NZDT"}}, // Pacific/Auckland
"Chatham Islands Standard Time" = {"+1245", "+1345"}, // Pacific/Chatham {"Bougainville Standard Time", {"+11", "+11"}}, // Pacific/Bougainville
"Easter Island Standard Time" = {"-06", "-05"}, // Pacific/Easter {"Chatham Islands Standard Time", {"+1245", "+1345"}}, // Pacific/Chatham
"Fiji Standard Time" = {"+12", "+12"}, // Pacific/Fiji {"Easter Island Standard Time", {"-06", "-05"}}, // Pacific/Easter
"Central Pacific Standard Time" = {"+11", "+11"}, // Pacific/Guadalcanal {"Fiji Standard Time", {"+12", "+12"}}, // Pacific/Fiji
"Hawaiian Standard Time" = {"HST", "HST"}, // Pacific/Honolulu {"Central Pacific Standard Time", {"+11", "+11"}}, // Pacific/Guadalcanal
"Line Islands Standard Time" = {"+14", "+14"}, // Pacific/Kiritimati {"Hawaiian Standard Time", {"HST", "HST"}}, // Pacific/Honolulu
"Marquesas Standard Time" = {"-0930", "-0930"}, // Pacific/Marquesas {"Line Islands Standard Time", {"+14", "+14"}}, // Pacific/Kiritimati
"Norfolk Standard Time" = {"+11", "+12"}, // Pacific/Norfolk {"Marquesas Standard Time", {"-0930", "-0930"}}, // Pacific/Marquesas
"West Pacific Standard Time" = {"+10", "+10"}, // Pacific/Port_Moresby {"Norfolk Standard Time", {"+11", "+12"}}, // Pacific/Norfolk
"Tonga Standard Time" = {"+13", "+13"}, // Pacific/Tongatapu {"West Pacific Standard Time", {"+10", "+10"}}, // Pacific/Port_Moresby
{"Tonga Standard Time", {"+13", "+13"}}, // Pacific/Tongatapu
} }
iana_to_windows_tz :: proc(iana_name: string, allocator := context.allocator) -> (name: string, success: bool) { iana_to_windows_tz :: proc(iana_name: string, allocator := context.allocator) -> (name: string, success: bool) {
@@ -269,7 +270,18 @@ _region_load :: proc(reg_str: string, allocator := context.allocator) -> (out_re
defer delete(wintz_name, allocator) defer delete(wintz_name, allocator)
defer delete(iana_name, allocator) defer delete(iana_name, allocator)
abbrevs := tz_abbrevs[wintz_name] or_return abbrevs: TZ_Abbrev
abbrevs_ok: bool
for pair in tz_abbrevs {
if pair.key == wintz_name {
abbrevs = pair.value
abbrevs_ok = true
break
}
}
if abbrevs_ok {
return
}
if abbrevs.std == "UTC" && abbrevs.dst == abbrevs.std { if abbrevs.std == "UTC" && abbrevs.dst == abbrevs.std {
return nil, true return nil, true
} }