base/i18n/timezone.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/i18n/timezone.h"
   6
   7 #include <string.h>
   8
   9 #include <map>
  10
  11 #include "base/memory/singleton.h"
  12 #include "base/strings/string16.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "third_party/icu/source/i18n/unicode/timezone.h"
  15
  16 namespace base {
  17
  18 namespace {
  19
  20 class TimezoneMap {
  21  public:
  22   static TimezoneMap* GetInstance() {
  23     return Singleton<TimezoneMap>::get();
  24   }
  25
  26   std::string CountryCodeForTimezone(const std::string& olson_code) {
  27     std::map<const char*, const char*, CompareCStrings>::iterator iter =
  28       map_.find(olson_code.c_str());
  29     if (iter != map_.end())
  30       return iter->second;
  31
  32     return std::string();
  33   }
  34
  35  private:
  36   TimezoneMap() {
  37     // These mappings are adapted from zone.tab, which is available at
  38     // <http://www.ietf.org/timezones/data/zone.tab> and is a part of public
  39     // domain.
  40     struct OlsonCodeData {
  41       const char* country_code;
  42       const char* olson_code;
  43     };
  44     static const OlsonCodeData olson_code_data[] = {
  45         { "AD", "Europe/Andorra" },
  46         { "AE", "Asia/Dubai" },
  47         { "AF", "Asia/Kabul" },
  48         { "AG", "America/Antigua" },
  49         { "AI", "America/Anguilla" },
  50         { "AL", "Europe/Tirane" },
  51         { "AM", "Asia/Yerevan" },
  52         { "AO", "Africa/Luanda" },
  53         { "AQ", "Antarctica/McMurdo" },
  54         { "AQ", "Antarctica/Rothera" },
  55         { "AQ", "Antarctica/Palmer" },
  56         { "AQ", "Antarctica/Mawson" },
  57         { "AQ", "Antarctica/Davis" },
  58         { "AQ", "Antarctica/Casey" },
  59         { "AQ", "Antarctica/Vostok" },
  60         { "AQ", "Antarctica/DumontDUrville" },
  61         { "AQ", "Antarctica/Syowa" },
  62         { "AR", "America/Argentina/Buenos_Aires" },
  63         { "AR", "America/Argentina/Cordoba" },
  64         { "AR", "America/Argentina/Salta" },
  65         { "AR", "America/Argentina/Jujuy" },
  66         { "AR", "America/Argentina/Tucuman" },
  67         { "AR", "America/Argentina/Catamarca" },
  68         { "AR", "America/Argentina/La_Rioja" },
  69         { "AR", "America/Argentina/San_Juan" },
  70         { "AR", "America/Argentina/Mendoza" },
  71         { "AR", "America/Argentina/San_Luis" },
  72         { "AR", "America/Argentina/Rio_Gallegos" },
  73         { "AR", "America/Argentina/Ushuaia" },
  74         { "AS", "Pacific/Pago_Pago" },
  75         { "AT", "Europe/Vienna" },
  76         { "AU", "Australia/Lord_Howe" },
  77         { "AU", "Antarctica/Macquarie" },
  78         { "AU", "Australia/Hobart" },
  79         { "AU", "Australia/Currie" },
  80         { "AU", "Australia/Melbourne" },
  81         { "AU", "Australia/Sydney" },
  82         { "AU", "Australia/Broken_Hill" },
  83         { "AU", "Australia/Brisbane" },
  84         { "AU", "Australia/Lindeman" },
  85         { "AU", "Australia/Adelaide" },
  86         { "AU", "Australia/Darwin" },
  87         { "AU", "Australia/Perth" },
  88         { "AU", "Australia/Eucla" },
  89         { "AW", "America/Aruba" },
  90         { "AX", "Europe/Mariehamn" },
  91         { "AZ", "Asia/Baku" },
  92         { "BA", "Europe/Sarajevo" },
  93         { "BB", "America/Barbados" },
  94         { "BD", "Asia/Dhaka" },
  95         { "BE", "Europe/Brussels" },
  96         { "BF", "Africa/Ouagadougou" },
  97         { "BG", "Europe/Sofia" },
  98         { "BH", "Asia/Bahrain" },
  99         { "BI", "Africa/Bujumbura" },
 100         { "BJ", "Africa/Porto-Novo" },
 101         { "BL", "America/St_Barthelemy" },
 102         { "BM", "Atlantic/Bermuda" },
 103         { "BN", "Asia/Brunei" },
 104         { "BO", "America/La_Paz" },
 105         { "BQ", "America/Kralendijk" },
 106         { "BR", "America/Noronha" },
 107         { "BR", "America/Belem" },
 108         { "BR", "America/Fortaleza" },
 109         { "BR", "America/Recife" },
 110         { "BR", "America/Araguaina" },
 111         { "BR", "America/Maceio" },
 112         { "BR", "America/Bahia" },
 113         { "BR", "America/Sao_Paulo" },
 114         { "BR", "America/Campo_Grande" },
 115         { "BR", "America/Cuiaba" },
 116         { "BR", "America/Santarem" },
 117         { "BR", "America/Porto_Velho" },
 118         { "BR", "America/Boa_Vista" },
 119         { "BR", "America/Manaus" },
 120         { "BR", "America/Eirunepe" },
 121         { "BR", "America/Rio_Branco" },
 122         { "BS", "America/Nassau" },
 123         { "BT", "Asia/Thimphu" },
 124         { "BW", "Africa/Gaborone" },
 125         { "BY", "Europe/Minsk" },
 126         { "BZ", "America/Belize" },
 127         { "CA", "America/St_Johns" },
 128         { "CA", "America/Halifax" },
 129         { "CA", "America/Glace_Bay" },
 130         { "CA", "America/Moncton" },
 131         { "CA", "America/Goose_Bay" },
 132         { "CA", "America/Blanc-Sablon" },
 133         { "CA", "America/Toronto" },
 134         { "CA", "America/Nipigon" },
 135         { "CA", "America/Thunder_Bay" },
 136         { "CA", "America/Iqaluit" },
 137         { "CA", "America/Pangnirtung" },
 138         { "CA", "America/Resolute" },
 139         { "CA", "America/Atikokan" },
 140         { "CA", "America/Rankin_Inlet" },
 141         { "CA", "America/Winnipeg" },
 142         { "CA", "America/Rainy_River" },
 143         { "CA", "America/Regina" },
 144         { "CA", "America/Swift_Current" },
 145         { "CA", "America/Edmonton" },
 146         { "CA", "America/Cambridge_Bay" },
 147         { "CA", "America/Yellowknife" },
 148         { "CA", "America/Inuvik" },
 149         { "CA", "America/Creston" },
 150         { "CA", "America/Dawson_Creek" },
 151         { "CA", "America/Vancouver" },
 152         { "CA", "America/Whitehorse" },
 153         { "CA", "America/Dawson" },
 154         { "CC", "Indian/Cocos" },
 155         { "CD", "Africa/Kinshasa" },
 156         { "CD", "Africa/Lubumbashi" },
 157         { "CF", "Africa/Bangui" },
 158         { "CG", "Africa/Brazzaville" },
 159         { "CH", "Europe/Zurich" },
 160         { "CI", "Africa/Abidjan" },
 161         { "CK", "Pacific/Rarotonga" },
 162         { "CL", "America/Santiago" },
 163         { "CL", "Pacific/Easter" },
 164         { "CM", "Africa/Douala" },
 165         { "CN", "Asia/Shanghai" },
 166         { "CN", "Asia/Harbin" },
 167         { "CN", "Asia/Chongqing" },
 168         { "CN", "Asia/Urumqi" },
 169         { "CN", "Asia/Kashgar" },
 170         { "CO", "America/Bogota" },
 171         { "CR", "America/Costa_Rica" },
 172         { "CU", "America/Havana" },
 173         { "CV", "Atlantic/Cape_Verde" },
 174         { "CW", "America/Curacao" },
 175         { "CX", "Indian/Christmas" },
 176         { "CY", "Asia/Nicosia" },
 177         { "CZ", "Europe/Prague" },
 178         { "DE", "Europe/Berlin" },
 179         { "DE", "Europe/Busingen" },
 180         { "DJ", "Africa/Djibouti" },
 181         { "DK", "Europe/Copenhagen" },
 182         { "DM", "America/Dominica" },
 183         { "DO", "America/Santo_Domingo" },
 184         { "DZ", "Africa/Algiers" },
 185         { "EC", "America/Guayaquil" },
 186         { "EC", "Pacific/Galapagos" },
 187         { "EE", "Europe/Tallinn" },
 188         { "EG", "Africa/Cairo" },
 189         { "EH", "Africa/El_Aaiun" },
 190         { "ER", "Africa/Asmara" },
 191         { "ES", "Europe/Madrid" },
 192         { "ES", "Africa/Ceuta" },
 193         { "ES", "Atlantic/Canary" },
 194         { "ET", "Africa/Addis_Ababa" },
 195         { "FI", "Europe/Helsinki" },
 196         { "FJ", "Pacific/Fiji" },
 197         { "FK", "Atlantic/Stanley" },
 198         { "FM", "Pacific/Chuuk" },
 199         { "FM", "Pacific/Pohnpei" },
 200         { "FM", "Pacific/Kosrae" },
 201         { "FO", "Atlantic/Faroe" },
 202         { "FR", "Europe/Paris" },
 203         { "GA", "Africa/Libreville" },
 204         { "GB", "Europe/London" },
 205         { "GD", "America/Grenada" },
 206         { "GE", "Asia/Tbilisi" },
 207         { "GF", "America/Cayenne" },
 208         { "GG", "Europe/Guernsey" },
 209         { "GH", "Africa/Accra" },
 210         { "GI", "Europe/Gibraltar" },
 211         { "GL", "America/Godthab" },
 212         { "GL", "America/Danmarkshavn" },
 213         { "GL", "America/Scoresbysund" },
 214         { "GL", "America/Thule" },
 215         { "GM", "Africa/Banjul" },
 216         { "GN", "Africa/Conakry" },
 217         { "GP", "America/Guadeloupe" },
 218         { "GQ", "Africa/Malabo" },
 219         { "GR", "Europe/Athens" },
 220         { "GS", "Atlantic/South_Georgia" },
 221         { "GT", "America/Guatemala" },
 222         { "GU", "Pacific/Guam" },
 223         { "GW", "Africa/Bissau" },
 224         { "GY", "America/Guyana" },
 225         { "HK", "Asia/Hong_Kong" },
 226         { "HN", "America/Tegucigalpa" },
 227         { "HR", "Europe/Zagreb" },
 228         { "HT", "America/Port-au-Prince" },
 229         { "HU", "Europe/Budapest" },
 230         { "ID", "Asia/Jakarta" },
 231         { "ID", "Asia/Pontianak" },
 232         { "ID", "Asia/Makassar" },
 233         { "ID", "Asia/Jayapura" },
 234         { "IE", "Europe/Dublin" },
 235         { "IL", "Asia/Jerusalem" },
 236         { "IM", "Europe/Isle_of_Man" },
 237         { "IN", "Asia/Kolkata" },
 238         { "IO", "Indian/Chagos" },
 239         { "IQ", "Asia/Baghdad" },
 240         { "IR", "Asia/Tehran" },
 241         { "IS", "Atlantic/Reykjavik" },
 242         { "IT", "Europe/Rome" },
 243         { "JE", "Europe/Jersey" },
 244         { "JM", "America/Jamaica" },
 245         { "JO", "Asia/Amman" },
 246         { "JP", "Asia/Tokyo" },
 247         { "KE", "Africa/Nairobi" },
 248         { "KG", "Asia/Bishkek" },
 249         { "KH", "Asia/Phnom_Penh" },
 250         { "KI", "Pacific/Tarawa" },
 251         { "KI", "Pacific/Enderbury" },
 252         { "KI", "Pacific/Kiritimati" },
 253         { "KM", "Indian/Comoro" },
 254         { "KN", "America/St_Kitts" },
 255         { "KP", "Asia/Pyongyang" },
 256         { "KR", "Asia/Seoul" },
 257         { "KW", "Asia/Kuwait" },
 258         { "KY", "America/Cayman" },
 259         { "KZ", "Asia/Almaty" },
 260         { "KZ", "Asia/Qyzylorda" },
 261         { "KZ", "Asia/Aqtobe" },
 262         { "KZ", "Asia/Aqtau" },
 263         { "KZ", "Asia/Oral" },
 264         { "LA", "Asia/Vientiane" },
 265         { "LB", "Asia/Beirut" },
 266         { "LC", "America/St_Lucia" },
 267         { "LI", "Europe/Vaduz" },
 268         { "LK", "Asia/Colombo" },
 269         { "LR", "Africa/Monrovia" },
 270         { "LS", "Africa/Maseru" },
 271         { "LT", "Europe/Vilnius" },
 272         { "LU", "Europe/Luxembourg" },
 273         { "LV", "Europe/Riga" },
 274         { "LY", "Africa/Tripoli" },
 275         { "MA", "Africa/Casablanca" },
 276         { "MC", "Europe/Monaco" },
 277         { "MD", "Europe/Chisinau" },
 278         { "ME", "Europe/Podgorica" },
 279         { "MF", "America/Marigot" },
 280         { "MG", "Indian/Antananarivo" },
 281         { "MH", "Pacific/Majuro" },
 282         { "MH", "Pacific/Kwajalein" },
 283         { "MK", "Europe/Skopje" },
 284         { "ML", "Africa/Bamako" },
 285         { "MM", "Asia/Rangoon" },
 286         { "MN", "Asia/Ulaanbaatar" },
 287         { "MN", "Asia/Hovd" },
 288         { "MN", "Asia/Choibalsan" },
 289         { "MO", "Asia/Macau" },
 290         { "MP", "Pacific/Saipan" },
 291         { "MQ", "America/Martinique" },
 292         { "MR", "Africa/Nouakchott" },
 293         { "MS", "America/Montserrat" },
 294         { "MT", "Europe/Malta" },
 295         { "MU", "Indian/Mauritius" },
 296         { "MV", "Indian/Maldives" },
 297         { "MW", "Africa/Blantyre" },
 298         { "MX", "America/Mexico_City" },
 299         { "MX", "America/Cancun" },
 300         { "MX", "America/Merida" },
 301         { "MX", "America/Monterrey" },
 302         { "MX", "America/Matamoros" },
 303         { "MX", "America/Mazatlan" },
 304         { "MX", "America/Chihuahua" },
 305         { "MX", "America/Ojinaga" },
 306         { "MX", "America/Hermosillo" },
 307         { "MX", "America/Tijuana" },
 308         { "MX", "America/Santa_Isabel" },
 309         { "MX", "America/Bahia_Banderas" },
 310         { "MY", "Asia/Kuala_Lumpur" },
 311         { "MY", "Asia/Kuching" },
 312         { "MZ", "Africa/Maputo" },
 313         { "NA", "Africa/Windhoek" },
 314         { "NC", "Pacific/Noumea" },
 315         { "NE", "Africa/Niamey" },
 316         { "NF", "Pacific/Norfolk" },
 317         { "NG", "Africa/Lagos" },
 318         { "NI", "America/Managua" },
 319         { "NL", "Europe/Amsterdam" },
 320         { "NO", "Europe/Oslo" },
 321         { "NP", "Asia/Kathmandu" },
 322         { "NR", "Pacific/Nauru" },
 323         { "NU", "Pacific/Niue" },
 324         { "NZ", "Pacific/Auckland" },
 325         { "NZ", "Pacific/Chatham" },
 326         { "OM", "Asia/Muscat" },
 327         { "PA", "America/Panama" },
 328         { "PE", "America/Lima" },
 329         { "PF", "Pacific/Tahiti" },
 330         { "PF", "Pacific/Marquesas" },
 331         { "PF", "Pacific/Gambier" },
 332         { "PG", "Pacific/Port_Moresby" },
 333         { "PH", "Asia/Manila" },
 334         { "PK", "Asia/Karachi" },
 335         { "PL", "Europe/Warsaw" },
 336         { "PM", "America/Miquelon" },
 337         { "PN", "Pacific/Pitcairn" },
 338         { "PR", "America/Puerto_Rico" },
 339         { "PS", "Asia/Gaza" },
 340         { "PS", "Asia/Hebron" },
 341         { "PT", "Europe/Lisbon" },
 342         { "PT", "Atlantic/Madeira" },
 343         { "PT", "Atlantic/Azores" },
 344         { "PW", "Pacific/Palau" },
 345         { "PY", "America/Asuncion" },
 346         { "QA", "Asia/Qatar" },
 347         { "RE", "Indian/Reunion" },
 348         { "RO", "Europe/Bucharest" },
 349         { "RS", "Europe/Belgrade" },
 350         { "RU", "Europe/Kaliningrad" },
 351         { "RU", "Europe/Moscow" },
 352         { "RU", "Europe/Volgograd" },
 353         { "RU", "Europe/Samara" },
 354         { "RU", "Asia/Yekaterinburg" },
 355         { "RU", "Asia/Omsk" },
 356         { "RU", "Asia/Novosibirsk" },
 357         { "RU", "Asia/Novokuznetsk" },
 358         { "RU", "Asia/Krasnoyarsk" },
 359         { "RU", "Asia/Irkutsk" },
 360         { "RU", "Asia/Yakutsk" },
 361         { "RU", "Asia/Khandyga" },
 362         { "RU", "Asia/Vladivostok" },
 363         { "RU", "Asia/Sakhalin" },
 364         { "RU", "Asia/Ust-Nera" },
 365         { "RU", "Asia/Magadan" },
 366         { "RU", "Asia/Kamchatka" },
 367         { "RU", "Asia/Anadyr" },
 368         { "RW", "Africa/Kigali" },
 369         { "SA", "Asia/Riyadh" },
 370         { "SB", "Pacific/Guadalcanal" },
 371         { "SC", "Indian/Mahe" },
 372         { "SD", "Africa/Khartoum" },
 373         { "SE", "Europe/Stockholm" },
 374         { "SG", "Asia/Singapore" },
 375         { "SH", "Atlantic/St_Helena" },
 376         { "SI", "Europe/Ljubljana" },
 377         { "SJ", "Arctic/Longyearbyen" },
 378         { "SK", "Europe/Bratislava" },
 379         { "SL", "Africa/Freetown" },
 380         { "SM", "Europe/San_Marino" },
 381         { "SN", "Africa/Dakar" },
 382         { "SO", "Africa/Mogadishu" },
 383         { "SR", "America/Paramaribo" },
 384         { "SS", "Africa/Juba" },
 385         { "ST", "Africa/Sao_Tome" },
 386         { "SV", "America/El_Salvador" },
 387         { "SX", "America/Lower_Princes" },
 388         { "SY", "Asia/Damascus" },
 389         { "SZ", "Africa/Mbabane" },
 390         { "TC", "America/Grand_Turk" },
 391         { "TD", "Africa/Ndjamena" },
 392         { "TF", "Indian/Kerguelen" },
 393         { "TG", "Africa/Lome" },
 394         { "TH", "Asia/Bangkok" },
 395         { "TJ", "Asia/Dushanbe" },
 396         { "TK", "Pacific/Fakaofo" },
 397         { "TL", "Asia/Dili" },
 398         { "TM", "Asia/Ashgabat" },
 399         { "TN", "Africa/Tunis" },
 400         { "TO", "Pacific/Tongatapu" },
 401         { "TR", "Europe/Istanbul" },
 402         { "TT", "America/Port_of_Spain" },
 403         { "TV", "Pacific/Funafuti" },
 404         { "TW", "Asia/Taipei" },
 405         { "TZ", "Africa/Dar_es_Salaam" },
 406         { "UA", "Europe/Kiev" },
 407         { "UA", "Europe/Uzhgorod" },
 408         { "UA", "Europe/Zaporozhye" },
 409         { "UA", "Europe/Simferopol" },
 410         { "UG", "Africa/Kampala" },
 411         { "UM", "Pacific/Johnston" },
 412         { "UM", "Pacific/Midway" },
 413         { "UM", "Pacific/Wake" },
 414         { "US", "America/New_York" },
 415         { "US", "America/Detroit" },
 416         { "US", "America/Kentucky/Louisville" },
 417         { "US", "America/Kentucky/Monticello" },
 418         { "US", "America/Indiana/Indianapolis" },
 419         { "US", "America/Indiana/Vincennes" },
 420         { "US", "America/Indiana/Winamac" },
 421         { "US", "America/Indiana/Marengo" },
 422         { "US", "America/Indiana/Petersburg" },
 423         { "US", "America/Indiana/Vevay" },
 424         { "US", "America/Chicago" },
 425         { "US", "America/Indiana/Tell_City" },
 426         { "US", "America/Indiana/Knox" },
 427         { "US", "America/Menominee" },
 428         { "US", "America/North_Dakota/Center" },
 429         { "US", "America/North_Dakota/New_Salem" },
 430         { "US", "America/North_Dakota/Beulah" },
 431         { "US", "America/Denver" },
 432         { "US", "America/Boise" },
 433         { "US", "America/Phoenix" },
 434         { "US", "America/Los_Angeles" },
 435         { "US", "America/Anchorage" },
 436         { "US", "America/Juneau" },
 437         { "US", "America/Sitka" },
 438         { "US", "America/Yakutat" },
 439         { "US", "America/Nome" },
 440         { "US", "America/Adak" },
 441         { "US", "America/Metlakatla" },
 442         { "US", "Pacific/Honolulu" },
 443         { "UY", "America/Montevideo" },
 444         { "UZ", "Asia/Samarkand" },
 445         { "UZ", "Asia/Tashkent" },
 446         { "VA", "Europe/Vatican" },
 447         { "VC", "America/St_Vincent" },
 448         { "VE", "America/Caracas" },
 449         { "VG", "America/Tortola" },
 450         { "VI", "America/St_Thomas" },
 451         { "VN", "Asia/Ho_Chi_Minh" },
 452         { "VU", "Pacific/Efate" },
 453         { "WF", "Pacific/Wallis" },
 454         { "WS", "Pacific/Apia" },
 455         { "YE", "Asia/Aden" },
 456         { "YT", "Indian/Mayotte" },
 457         { "ZA", "Africa/Johannesburg" },
 458         { "ZM", "Africa/Lusaka" },
 459         { "ZW", "Africa/Harare" },
 460         // The mappings below are custom additions to zone.tab.
 461         { "GB", "Etc/GMT" },
 462         { "GB", "Etc/UTC" },
 463         { "GB", "Etc/UCT" },
 464     };
 465
 466     for (size_t i = 0; i < arraysize(olson_code_data); ++i)
 467       map_[olson_code_data[i].olson_code] = olson_code_data[i].country_code;
 468
 469     // These are mapping from old codenames to new codenames. They are also
 470     // part of public domain, and available at
 471     // <http://www.ietf.org/timezones/data/backward>.
 472     struct LinkData {
 473       const char* old_code;
 474       const char* new_code;
 475     };
 476     static const LinkData link_data[] = {
 477         { "Africa/Asmera", "Africa/Asmara" },
 478         { "Africa/Timbuktu", "Africa/Bamako" },
 479         { "America/Argentina/ComodRivadavia", "America/Argentina/Catamarca" },
 480         { "America/Atka", "America/Adak" },
 481         { "America/Buenos_Aires", "America/Argentina/Buenos_Aires" },
 482         { "America/Catamarca", "America/Argentina/Catamarca" },
 483         { "America/Coral_Harbour", "America/Atikokan" },
 484         { "America/Cordoba", "America/Argentina/Cordoba" },
 485         { "America/Ensenada", "America/Tijuana" },
 486         { "America/Fort_Wayne", "America/Indiana/Indianapolis" },
 487         { "America/Indianapolis", "America/Indiana/Indianapolis" },
 488         { "America/Jujuy", "America/Argentina/Jujuy" },
 489         { "America/Knox_IN", "America/Indiana/Knox" },
 490         { "America/Louisville", "America/Kentucky/Louisville" },
 491         { "America/Mendoza", "America/Argentina/Mendoza" },
 492         { "America/Porto_Acre", "America/Rio_Branco" },
 493         { "America/Rosario", "America/Argentina/Cordoba" },
 494         { "America/Virgin", "America/St_Thomas" },
 495         { "Asia/Ashkhabad", "Asia/Ashgabat" },
 496         { "Asia/Chungking", "Asia/Chongqing" },
 497         { "Asia/Dacca", "Asia/Dhaka" },
 498         { "Asia/Katmandu", "Asia/Kathmandu" },
 499         { "Asia/Calcutta", "Asia/Kolkata" },
 500         { "Asia/Macao", "Asia/Macau" },
 501         { "Asia/Tel_Aviv", "Asia/Jerusalem" },
 502         { "Asia/Saigon", "Asia/Ho_Chi_Minh" },
 503         { "Asia/Thimbu", "Asia/Thimphu" },
 504         { "Asia/Ujung_Pandang", "Asia/Makassar" },
 505         { "Asia/Ulan_Bator", "Asia/Ulaanbaatar" },
 506         { "Atlantic/Faeroe", "Atlantic/Faroe" },
 507         { "Atlantic/Jan_Mayen", "Europe/Oslo" },
 508         { "Australia/ACT", "Australia/Sydney" },
 509         { "Australia/Canberra", "Australia/Sydney" },
 510         { "Australia/LHI", "Australia/Lord_Howe" },
 511         { "Australia/NSW", "Australia/Sydney" },
 512         { "Australia/North", "Australia/Darwin" },
 513         { "Australia/Queensland", "Australia/Brisbane" },
 514         { "Australia/South", "Australia/Adelaide" },
 515         { "Australia/Tasmania", "Australia/Hobart" },
 516         { "Australia/Victoria", "Australia/Melbourne" },
 517         { "Australia/West", "Australia/Perth" },
 518         { "Australia/Yancowinna", "Australia/Broken_Hill" },
 519         { "Brazil/Acre", "America/Rio_Branco" },
 520         { "Brazil/DeNoronha", "America/Noronha" },
 521         { "Brazil/East", "America/Sao_Paulo" },
 522         { "Brazil/West", "America/Manaus" },
 523         { "Canada/Atlantic", "America/Halifax" },
 524         { "Canada/Central", "America/Winnipeg" },
 525         { "Canada/East-Saskatchewan", "America/Regina" },
 526         { "Canada/Eastern", "America/Toronto" },
 527         { "Canada/Mountain", "America/Edmonton" },
 528         { "Canada/Newfoundland", "America/St_Johns" },
 529         { "Canada/Pacific", "America/Vancouver" },
 530         { "Canada/Saskatchewan", "America/Regina" },
 531         { "Canada/Yukon", "America/Whitehorse" },
 532         { "Chile/Continental", "America/Santiago" },
 533         { "Chile/EasterIsland", "Pacific/Easter" },
 534         { "Cuba", "America/Havana" },
 535         { "Egypt", "Africa/Cairo" },
 536         { "Eire", "Europe/Dublin" },
 537         { "Europe/Belfast", "Europe/London" },
 538         { "Europe/Tiraspol", "Europe/Chisinau" },
 539         { "GB", "Europe/London" },
 540         { "GB-Eire", "Europe/London" },
 541         { "GMT+0", "Etc/GMT" },
 542         { "GMT-0", "Etc/GMT" },
 543         { "GMT0", "Etc/GMT" },
 544         { "Greenwich", "Etc/GMT" },
 545         { "Hongkong", "Asia/Hong_Kong" },
 546         { "Iceland", "Atlantic/Reykjavik" },
 547         { "Iran", "Asia/Tehran" },
 548         { "Israel", "Asia/Jerusalem" },
 549         { "Jamaica", "America/Jamaica" },
 550         { "Japan", "Asia/Tokyo" },
 551         { "Kwajalein", "Pacific/Kwajalein" },
 552         { "Libya", "Africa/Tripoli" },
 553         { "Mexico/BajaNorte", "America/Tijuana" },
 554         { "Mexico/BajaSur", "America/Mazatlan" },
 555         { "Mexico/General", "America/Mexico_City" },
 556         { "NZ", "Pacific/Auckland" },
 557         { "NZ-CHAT", "Pacific/Chatham" },
 558         { "Navajo", "America/Denver" },
 559         { "PRC", "Asia/Shanghai" },
 560         { "Pacific/Samoa", "Pacific/Pago_Pago" },
 561         { "Pacific/Yap", "Pacific/Chuuk" },
 562         { "Pacific/Truk", "Pacific/Chuuk" },
 563         { "Pacific/Ponape", "Pacific/Pohnpei" },
 564         { "Poland", "Europe/Warsaw" },
 565         { "Portugal", "Europe/Lisbon" },
 566         { "ROC", "Asia/Taipei" },
 567         { "ROK", "Asia/Seoul" },
 568         { "Singapore", "Asia/Singapore" },
 569         { "Turkey", "Europe/Istanbul" },
 570         { "UCT", "Etc/UCT" },
 571         { "US/Alaska", "America/Anchorage" },
 572         { "US/Aleutian", "America/Adak" },
 573         { "US/Arizona", "America/Phoenix" },
 574         { "US/Central", "America/Chicago" },
 575         { "US/East-Indiana", "America/Indiana/Indianapolis" },
 576         { "US/Eastern", "America/New_York" },
 577         { "US/Hawaii", "Pacific/Honolulu" },
 578         { "US/Indiana-Starke", "America/Indiana/Knox" },
 579         { "US/Michigan", "America/Detroit" },
 580         { "US/Mountain", "America/Denver" },
 581         { "US/Pacific", "America/Los_Angeles" },
 582         { "US/Samoa", "Pacific/Pago_Pago" },
 583         { "UTC", "Etc/UTC" },
 584         { "Universal", "Etc/UTC" },
 585         { "W-SU", "Europe/Moscow" },
 586         { "Zulu", "Etc/UTC" },
 587     };
 588
 589     for (size_t i = 0; i < arraysize(link_data); ++i)
 590       map_[link_data[i].old_code] = map_[link_data[i].new_code];
 591   }
 592
 593   friend struct DefaultSingletonTraits<TimezoneMap>;
 594
 595   struct CompareCStrings {
 596     bool operator()(const char* str1, const char* str2) const {
 597       return strcmp(str1, str2) < 0;
 598     }
 599   };
 600   std::map<const char*, const char*, CompareCStrings> map_;
 601
 602   DISALLOW_COPY_AND_ASSIGN(TimezoneMap);
 603 };
 604
 605 }  // namespace
 606
 607 std::string CountryCodeForCurrentTimezone() {
 608   scoped_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
 609   icu::UnicodeString id;
 610   zone->getID(id);
 611   string16 olson_code(id.getBuffer(), id.length());
 612   return TimezoneMap::GetInstance()->CountryCodeForTimezone(
 613       UTF16ToUTF8(olson_code));
 614 }
 615
 616 }  // namespace base