winsup/utils/tzset.c

   1 /* tzset.c: Convert current Windows timezone to POSIX timezone information.
   2
   3    Copyright 2012, 2013 Red Hat, Inc.
   4
   5 This file is part of Cygwin.
   6
   7 This software is a copyrighted work licensed under the terms of the
   8 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
   9 details. */
  10
  11 #include <errno.h>
  12 #include <stdio.h>
  13 #include <inttypes.h>
  14 #include <wchar.h>
  15 #include <locale.h>
  16 #include <getopt.h>
  17 #include <cygwin/version.h>
  18 #include <windows.h>
  19
  20 #ifndef GEOID_NOT_AVAILABLE
  21 #define GEOID_NOT_AVAILABLE -1
  22 #endif
  23
  24 /* This table maps Windows timezone keynames and countries per ISO 3166-1 to
  25    POSIX-compatible timezone IDs.  The information is taken from
  26    http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/zone_tzid.html
  27
  28    The mapping from unicode.org is just a bit incomplete.  It doesn't contain
  29    a few timezones available on Windows XP, namely:
  30
  31     Armenian Standard Time
  32     Mexico Standard Time
  33     Mexico Standard Time 2
  34
  35   as well as the still (Windows 7) available
  36
  37     Mid-Atlantic Standard Time
  38
  39   It also doesn't contain some of the deprecated country codes used in older
  40   OSes, namely:
  41
  42     SP (Serbian, proposed) used in XP
  43     CS (Serbian and Montenegro, dissolved, now RS and ME) used in Vista
  44
  45   While these are apparently old, they are required here to get a complete
  46   mapping on all supported OSes. */
  47 struct
  48 {
  49   PCWSTR win_tzkey;
  50   PCWSTR country;
  51   PCWSTR posix_tzid;
  52 } tzmap[] =
  53 {
  54   { L"AUS Central Standard Time", L"", L"Australia/Darwin" },
  55   { L"AUS Central Standard Time", L"AU", L"Australia/Darwin" },
  56   { L"AUS Eastern Standard Time", L"", L"Australia/Sydney" },
  57   { L"AUS Eastern Standard Time", L"AU", L"Australia/Sydney Australia/Melbourne" },
  58   { L"Afghanistan Standard Time", L"", L"Asia/Kabul" },
  59   { L"Afghanistan Standard Time", L"AF", L"Asia/Kabul" },
  60   { L"Alaskan Standard Time", L"", L"America/Anchorage" },
  61   { L"Alaskan Standard Time", L"US", L"America/Anchorage America/Juneau America/Nome America/Sitka America/Yakutat" },
  62   { L"Arab Standard Time", L"", L"Asia/Riyadh" },
  63   { L"Arab Standard Time", L"BH", L"Asia/Bahrain" },
  64   { L"Arab Standard Time", L"KW", L"Asia/Kuwait" },
  65   { L"Arab Standard Time", L"QA", L"Asia/Qatar" },
  66   { L"Arab Standard Time", L"SA", L"Asia/Riyadh" },
  67   { L"Arab Standard Time", L"YE", L"Asia/Aden" },
  68   { L"Arabian Standard Time", L"", L"Asia/Dubai" },
  69   { L"Arabian Standard Time", L"AE", L"Asia/Dubai" },
  70   { L"Arabian Standard Time", L"OM", L"Asia/Muscat" },
  71   { L"Arabian Standard Time", L"ZZ", L"Etc/GMT-4" },
  72   { L"Arabic Standard Time", L"", L"Asia/Baghdad" },
  73   { L"Arabic Standard Time", L"IQ", L"Asia/Baghdad" },
  74   { L"Argentina Standard Time", L"", L"America/Buenos_Aires" },
  75   { L"Argentina Standard Time", L"AR", L"America/Buenos_Aires America/Argentina/La_Rioja America/Argentina/Rio_Gallegos America/Argentina/Salta America/Argentina/San_Juan America/Argentina/San_Luis America/Argentina/Tucuman America/Argentina/Ushuaia America/Catamarca America/Cordoba America/Jujuy America/Mendoza" },
  76   { L"Armenian Standard Time", L"AM", L"Asia/Yerevan" },
  77   { L"Atlantic Standard Time", L"", L"America/Halifax" },
  78   { L"Atlantic Standard Time", L"BM", L"Atlantic/Bermuda" },
  79   { L"Atlantic Standard Time", L"CA", L"America/Halifax America/Glace_Bay America/Goose_Bay America/Moncton" },
  80   { L"Atlantic Standard Time", L"GL", L"America/Thule" },
  81   { L"Azerbaijan Standard Time", L"", L"Asia/Baku" },
  82   { L"Azerbaijan Standard Time", L"AZ", L"Asia/Baku" },
  83   { L"Azores Standard Time", L"", L"Atlantic/Azores" },
  84   { L"Azores Standard Time", L"GL", L"America/Scoresbysund" },
  85   { L"Azores Standard Time", L"PT", L"Atlantic/Azores" },
  86   { L"Bahia Standard Time", L"", L"America/Bahia" },
  87   { L"Bahia Standard Time", L"BR", L"America/Bahia" },
  88   { L"Bangladesh Standard Time", L"", L"Asia/Dhaka" },
  89   { L"Bangladesh Standard Time", L"BD", L"Asia/Dhaka" },
  90   { L"Bangladesh Standard Time", L"BT", L"Asia/Thimphu" },
  91   { L"Canada Central Standard Time", L"", L"America/Regina" },
  92   { L"Canada Central Standard Time", L"CA", L"America/Regina America/Swift_Current" },
  93   { L"Cape Verde Standard Time", L"", L"Atlantic/Cape_Verde" },
  94   { L"Cape Verde Standard Time", L"CV", L"Atlantic/Cape_Verde" },
  95   { L"Cape Verde Standard Time", L"ZZ", L"Etc/GMT+1" },
  96   { L"Caucasus Standard Time", L"", L"Asia/Yerevan" },
  97   { L"Caucasus Standard Time", L"AM", L"Asia/Yerevan" },
  98   { L"Cen. Australia Standard Time", L"", L"Australia/Adelaide" },
  99   { L"Cen. Australia Standard Time", L"AU", L"Australia/Adelaide Australia/Broken_Hill" },
 100   { L"Central America Standard Time", L"", L"America/Guatemala" },
 101   { L"Central America Standard Time", L"BZ", L"America/Belize" },
 102   { L"Central America Standard Time", L"CR", L"America/Costa_Rica" },
 103   { L"Central America Standard Time", L"EC", L"Pacific/Galapagos" },
 104   { L"Central America Standard Time", L"GT", L"America/Guatemala" },
 105   { L"Central America Standard Time", L"HN", L"America/Tegucigalpa" },
 106   { L"Central America Standard Time", L"NI", L"America/Managua" },
 107   { L"Central America Standard Time", L"SV", L"America/El_Salvador" },
 108   { L"Central America Standard Time", L"ZZ", L"Etc/GMT+6" },
 109   { L"Central Asia Standard Time", L"", L"Asia/Almaty" },
 110   { L"Central Asia Standard Time", L"AQ", L"Antarctica/Vostok" },
 111   { L"Central Asia Standard Time", L"IO", L"Indian/Chagos" },
 112   { L"Central Asia Standard Time", L"KG", L"Asia/Bishkek" },
 113   { L"Central Asia Standard Time", L"KZ", L"Asia/Almaty Asia/Qyzylorda" },
 114   { L"Central Asia Standard Time", L"ZZ", L"Etc/GMT-6" },
 115   { L"Central Brazilian Standard Time", L"", L"America/Cuiaba" },
 116   { L"Central Brazilian Standard Time", L"BR", L"America/Cuiaba America/Campo_Grande" },
 117   { L"Central Europe Standard Time", L"", L"Europe/Budapest" },
 118   { L"Central Europe Standard Time", L"AL", L"Europe/Tirane" },
 119   { L"Central Europe Standard Time", L"CS", L"Europe/Belgrade" },
 120   { L"Central Europe Standard Time", L"CZ", L"Europe/Prague" },
 121   { L"Central Europe Standard Time", L"HU", L"Europe/Budapest" },
 122   { L"Central Europe Standard Time", L"ME", L"Europe/Podgorica" },
 123   { L"Central Europe Standard Time", L"RS", L"Europe/Belgrade" },
 124   { L"Central Europe Standard Time", L"SI", L"Europe/Ljubljana" },
 125   { L"Central Europe Standard Time", L"SK", L"Europe/Bratislava" },
 126   { L"Central Europe Standard Time", L"SP", L"Europe/Belgrade" },
 127   { L"Central European Standard Time", L"", L"Europe/Warsaw" },
 128   { L"Central European Standard Time", L"BA", L"Europe/Sarajevo" },
 129   { L"Central European Standard Time", L"HR", L"Europe/Zagreb" },
 130   { L"Central European Standard Time", L"MK", L"Europe/Skopje" },
 131   { L"Central European Standard Time", L"PL", L"Europe/Warsaw" },
 132   { L"Central Pacific Standard Time", L"", L"Pacific/Guadalcanal" },
 133   { L"Central Pacific Standard Time", L"AQ", L"Antarctica/Macquarie" },
 134   { L"Central Pacific Standard Time", L"FM", L"Pacific/Ponape Pacific/Kosrae" },
 135   { L"Central Pacific Standard Time", L"NC", L"Pacific/Noumea" },
 136   { L"Central Pacific Standard Time", L"SB", L"Pacific/Guadalcanal" },
 137   { L"Central Pacific Standard Time", L"VU", L"Pacific/Efate" },
 138   { L"Central Pacific Standard Time", L"ZZ", L"Etc/GMT-11" },
 139   { L"Central Standard Time", L"", L"America/Chicago" },
 140   { L"Central Standard Time", L"CA", L"America/Winnipeg America/Rainy_River America/Rankin_Inlet America/Resolute" },
 141   { L"Central Standard Time", L"MX", L"America/Matamoros" },
 142   { L"Central Standard Time", L"US", L"America/Chicago America/Indiana/Knox America/Indiana/Tell_City America/Menominee America/North_Dakota/Beulah America/North_Dakota/Center America/North_Dakota/New_Salem" },
 143   { L"Central Standard Time", L"ZZ", L"CST6CDT" },
 144   { L"Central Standard Time (Mexico)", L"", L"America/Mexico_City" },
 145   { L"Central Standard Time (Mexico)", L"MX", L"America/Mexico_City America/Bahia_Banderas America/Cancun America/Merida America/Monterrey" },
 146   { L"China Standard Time", L"", L"Asia/Shanghai" },
 147   { L"China Standard Time", L"CN", L"Asia/Shanghai Asia/Chongqing Asia/Harbin Asia/Kashgar Asia/Urumqi" },
 148   { L"China Standard Time", L"HK", L"Asia/Hong_Kong" },
 149   { L"China Standard Time", L"MO", L"Asia/Macau" },
 150   { L"Dateline Standard Time", L"", L"Etc/GMT+12" },
 151   { L"Dateline Standard Time", L"ZZ", L"Etc/GMT+12" },
 152   { L"E. Africa Standard Time", L"", L"Africa/Nairobi" },
 153   { L"E. Africa Standard Time", L"AQ", L"Antarctica/Syowa" },
 154   { L"E. Africa Standard Time", L"DJ", L"Africa/Djibouti" },
 155   { L"E. Africa Standard Time", L"ER", L"Africa/Asmera" },
 156   { L"E. Africa Standard Time", L"ET", L"Africa/Addis_Ababa" },
 157   { L"E. Africa Standard Time", L"KE", L"Africa/Nairobi" },
 158   { L"E. Africa Standard Time", L"KM", L"Indian/Comoro" },
 159   { L"E. Africa Standard Time", L"MG", L"Indian/Antananarivo" },
 160   { L"E. Africa Standard Time", L"SD", L"Africa/Khartoum" },
 161   { L"E. Africa Standard Time", L"SO", L"Africa/Mogadishu" },
 162   { L"E. Africa Standard Time", L"SS", L"Africa/Juba" },
 163   { L"E. Africa Standard Time", L"TZ", L"Africa/Dar_es_Salaam" },
 164   { L"E. Africa Standard Time", L"UG", L"Africa/Kampala" },
 165   { L"E. Africa Standard Time", L"YT", L"Indian/Mayotte" },
 166   { L"E. Africa Standard Time", L"ZZ", L"Etc/GMT-3" },
 167   { L"E. Australia Standard Time", L"", L"Australia/Brisbane" },
 168   { L"E. Australia Standard Time", L"AU", L"Australia/Brisbane Australia/Lindeman" },
 169   { L"E. Europe Standard Time", L"", L"Asia/Nicosia" },
 170   { L"E. Europe Standard Time", L"CY", L"Asia/Nicosia" },
 171   { L"E. South America Standard Time", L"", L"America/Sao_Paulo" },
 172   { L"E. South America Standard Time", L"BR", L"America/Sao_Paulo" },
 173   { L"Eastern Standard Time", L"", L"America/New_York" },
 174   { L"Eastern Standard Time", L"BS", L"America/Nassau" },
 175   { L"Eastern Standard Time", L"CA", L"America/Toronto America/Iqaluit America/Montreal America/Nipigon America/Pangnirtung America/Thunder_Bay" },
 176   { L"Eastern Standard Time", L"TC", L"America/Grand_Turk" },
 177   { L"Eastern Standard Time", L"US", L"America/New_York America/Detroit America/Indiana/Petersburg America/Indiana/Vincennes America/Indiana/Winamac America/Kentucky/Monticello America/Louisville" },
 178   { L"Eastern Standard Time", L"ZZ", L"EST5EDT" },
 179   { L"Egypt Standard Time", L"", L"Africa/Cairo" },
 180   { L"Egypt Standard Time", L"EG", L"Africa/Cairo" },
 181   { L"Egypt Standard Time", L"PS", L"Asia/Gaza Asia/Hebron" },
 182   { L"Ekaterinburg Standard Time", L"", L"Asia/Yekaterinburg" },
 183   { L"Ekaterinburg Standard Time", L"RU", L"Asia/Yekaterinburg" },
 184   { L"FLE Standard Time", L"", L"Europe/Kiev" },
 185   { L"FLE Standard Time", L"AX", L"Europe/Mariehamn" },
 186   { L"FLE Standard Time", L"BG", L"Europe/Sofia" },
 187   { L"FLE Standard Time", L"EE", L"Europe/Tallinn" },
 188   { L"FLE Standard Time", L"FI", L"Europe/Helsinki" },
 189   { L"FLE Standard Time", L"LT", L"Europe/Vilnius" },
 190   { L"FLE Standard Time", L"LV", L"Europe/Riga" },
 191   { L"FLE Standard Time", L"UA", L"Europe/Kiev Europe/Simferopol Europe/Uzhgorod Europe/Zaporozhye" },
 192   { L"Fiji Standard Time", L"", L"Pacific/Fiji" },
 193   { L"Fiji Standard Time", L"FJ", L"Pacific/Fiji" },
 194   { L"GMT Standard Time", L"", L"Europe/London" },
 195   { L"GMT Standard Time", L"ES", L"Atlantic/Canary" },
 196   { L"GMT Standard Time", L"FO", L"Atlantic/Faeroe" },
 197   { L"GMT Standard Time", L"GB", L"Europe/London" },
 198   { L"GMT Standard Time", L"GG", L"Europe/Guernsey" },
 199   { L"GMT Standard Time", L"IE", L"Europe/Dublin" },
 200   { L"GMT Standard Time", L"IM", L"Europe/Isle_of_Man" },
 201   { L"GMT Standard Time", L"JE", L"Europe/Jersey" },
 202   { L"GMT Standard Time", L"PT", L"Europe/Lisbon Atlantic/Madeira" },
 203   { L"GTB Standard Time", L"", L"Europe/Bucharest" },
 204   { L"GTB Standard Time", L"GR", L"Europe/Athens" },
 205   { L"GTB Standard Time", L"MD", L"Europe/Chisinau" },
 206   { L"GTB Standard Time", L"RO", L"Europe/Bucharest" },
 207   { L"Georgian Standard Time", L"", L"Asia/Tbilisi" },
 208   { L"Georgian Standard Time", L"GE", L"Asia/Tbilisi" },
 209   { L"Greenland Standard Time", L"", L"America/Godthab" },
 210   { L"Greenland Standard Time", L"GL", L"America/Godthab" },
 211   { L"Greenwich Standard Time", L"", L"Atlantic/Reykjavik" },
 212   { L"Greenwich Standard Time", L"BF", L"Africa/Ouagadougou" },
 213   { L"Greenwich Standard Time", L"CI", L"Africa/Abidjan" },
 214   { L"Greenwich Standard Time", L"EH", L"Africa/El_Aaiun" },
 215   { L"Greenwich Standard Time", L"GH", L"Africa/Accra" },
 216   { L"Greenwich Standard Time", L"GM", L"Africa/Banjul" },
 217   { L"Greenwich Standard Time", L"GN", L"Africa/Conakry" },
 218   { L"Greenwich Standard Time", L"GW", L"Africa/Bissau" },
 219   { L"Greenwich Standard Time", L"IS", L"Atlantic/Reykjavik" },
 220   { L"Greenwich Standard Time", L"LR", L"Africa/Monrovia" },
 221   { L"Greenwich Standard Time", L"ML", L"Africa/Bamako" },
 222   { L"Greenwich Standard Time", L"MR", L"Africa/Nouakchott" },
 223   { L"Greenwich Standard Time", L"SH", L"Atlantic/St_Helena" },
 224   { L"Greenwich Standard Time", L"SL", L"Africa/Freetown" },
 225   { L"Greenwich Standard Time", L"SN", L"Africa/Dakar" },
 226   { L"Greenwich Standard Time", L"ST", L"Africa/Sao_Tome" },
 227   { L"Greenwich Standard Time", L"TG", L"Africa/Lome" },
 228   { L"Hawaiian Standard Time", L"", L"Pacific/Honolulu" },
 229   { L"Hawaiian Standard Time", L"CK", L"Pacific/Rarotonga" },
 230   { L"Hawaiian Standard Time", L"PF", L"Pacific/Tahiti" },
 231   { L"Hawaiian Standard Time", L"TK", L"Pacific/Fakaofo" },
 232   { L"Hawaiian Standard Time", L"UM", L"Pacific/Johnston" },
 233   { L"Hawaiian Standard Time", L"US", L"Pacific/Honolulu" },
 234   { L"Hawaiian Standard Time", L"ZZ", L"Etc/GMT+10" },
 235   { L"India Standard Time", L"", L"Asia/Calcutta" },
 236   { L"India Standard Time", L"IN", L"Asia/Calcutta" },
 237   { L"Iran Standard Time", L"", L"Asia/Tehran" },
 238   { L"Iran Standard Time", L"IR", L"Asia/Tehran" },
 239   { L"Israel Standard Time", L"", L"Asia/Jerusalem" },
 240   { L"Israel Standard Time", L"IL", L"Asia/Jerusalem" },
 241   { L"Jordan Standard Time", L"", L"Asia/Amman" },
 242   { L"Jordan Standard Time", L"JO", L"Asia/Amman" },
 243   { L"Kaliningrad Standard Time", L"", L"Europe/Kaliningrad" },
 244   { L"Kaliningrad Standard Time", L"BY", L"Europe/Minsk" },
 245   { L"Kaliningrad Standard Time", L"RU", L"Europe/Kaliningrad" },
 246   { L"Kamchatka Standard Time", L"", L"Asia/Kamchatka" },
 247   { L"Korea Standard Time", L"", L"Asia/Seoul" },
 248   { L"Korea Standard Time", L"KP", L"Asia/Pyongyang" },
 249   { L"Korea Standard Time", L"KR", L"Asia/Seoul" },
 250   { L"Magadan Standard Time", L"", L"Asia/Magadan" },
 251   { L"Magadan Standard Time", L"RU", L"Asia/Magadan Asia/Anadyr Asia/Kamchatka" },
 252   { L"Mauritius Standard Time", L"", L"Indian/Mauritius" },
 253   { L"Mauritius Standard Time", L"MU", L"Indian/Mauritius" },
 254   { L"Mauritius Standard Time", L"RE", L"Indian/Reunion" },
 255   { L"Mauritius Standard Time", L"SC", L"Indian/Mahe" },
 256   { L"Mexico Standard Time", L"", L"America/Mexico_City" },
 257   { L"Mexico Standard Time 2", L"", L"America/Mazatlan" },
 258   { L"Mid-Atlantic Standard Time", L"", L"Atlantic/South_Georgia" },
 259   { L"Middle East Standard Time", L"", L"Asia/Beirut" },
 260   { L"Middle East Standard Time", L"LB", L"Asia/Beirut" },
 261   { L"Montevideo Standard Time", L"", L"America/Montevideo" },
 262   { L"Montevideo Standard Time", L"UY", L"America/Montevideo" },
 263   { L"Morocco Standard Time", L"", L"Africa/Casablanca" },
 264   { L"Morocco Standard Time", L"MA", L"Africa/Casablanca" },
 265   { L"Mountain Standard Time", L"", L"America/Denver" },
 266   { L"Mountain Standard Time", L"CA", L"America/Edmonton America/Cambridge_Bay America/Inuvik America/Yellowknife" },
 267   { L"Mountain Standard Time", L"MX", L"America/Ojinaga" },
 268   { L"Mountain Standard Time", L"US", L"America/Denver America/Boise America/Shiprock" },
 269   { L"Mountain Standard Time", L"ZZ", L"MST7MDT" },
 270   { L"Mountain Standard Time (Mexico)", L"", L"America/Chihuahua" },
 271   { L"Mountain Standard Time (Mexico)", L"MX", L"America/Chihuahua America/Mazatlan" },
 272   { L"Myanmar Standard Time", L"", L"Asia/Rangoon" },
 273   { L"Myanmar Standard Time", L"CC", L"Indian/Cocos" },
 274   { L"Myanmar Standard Time", L"MM", L"Asia/Rangoon" },
 275   { L"N. Central Asia Standard Time", L"", L"Asia/Novosibirsk" },
 276   { L"N. Central Asia Standard Time", L"RU", L"Asia/Novosibirsk Asia/Novokuznetsk Asia/Omsk" },
 277   { L"Namibia Standard Time", L"", L"Africa/Windhoek" },
 278   { L"Namibia Standard Time", L"NA", L"Africa/Windhoek" },
 279   { L"Nepal Standard Time", L"", L"Asia/Kathmandu" },
 280   { L"Nepal Standard Time", L"NP", L"Asia/Kathmandu" },
 281   { L"New Zealand Standard Time", L"", L"Pacific/Auckland" },
 282   { L"New Zealand Standard Time", L"AQ", L"Antarctica/South_Pole Antarctica/McMurdo" },
 283   { L"New Zealand Standard Time", L"NZ", L"Pacific/Auckland" },
 284   { L"Newfoundland Standard Time", L"", L"America/St_Johns" },
 285   { L"Newfoundland Standard Time", L"CA", L"America/St_Johns" },
 286   { L"North Asia East Standard Time", L"", L"Asia/Irkutsk" },
 287   { L"North Asia East Standard Time", L"RU", L"Asia/Irkutsk" },
 288   { L"North Asia Standard Time", L"", L"Asia/Krasnoyarsk" },
 289   { L"North Asia Standard Time", L"RU", L"Asia/Krasnoyarsk" },
 290   { L"Pacific SA Standard Time", L"", L"America/Santiago" },
 291   { L"Pacific SA Standard Time", L"AQ", L"Antarctica/Palmer" },
 292   { L"Pacific SA Standard Time", L"CL", L"America/Santiago" },
 293   { L"Pacific Standard Time", L"", L"America/Los_Angeles" },
 294   { L"Pacific Standard Time", L"CA", L"America/Vancouver America/Dawson America/Whitehorse" },
 295   { L"Pacific Standard Time", L"MX", L"America/Tijuana" },
 296   { L"Pacific Standard Time", L"US", L"America/Los_Angeles" },
 297   { L"Pacific Standard Time", L"ZZ", L"PST8PDT" },
 298   { L"Pacific Standard Time (Mexico)", L"", L"America/Santa_Isabel" },
 299   { L"Pacific Standard Time (Mexico)", L"MX", L"America/Santa_Isabel" },
 300   { L"Pakistan Standard Time", L"", L"Asia/Karachi" },
 301   { L"Pakistan Standard Time", L"PK", L"Asia/Karachi" },
 302   { L"Paraguay Standard Time", L"", L"America/Asuncion" },
 303   { L"Paraguay Standard Time", L"PY", L"America/Asuncion" },
 304   { L"Romance Standard Time", L"", L"Europe/Paris" },
 305   { L"Romance Standard Time", L"BE", L"Europe/Brussels" },
 306   { L"Romance Standard Time", L"DK", L"Europe/Copenhagen" },
 307   { L"Romance Standard Time", L"ES", L"Europe/Madrid Africa/Ceuta" },
 308   { L"Romance Standard Time", L"FR", L"Europe/Paris" },
 309   { L"Russian Standard Time", L"", L"Europe/Moscow" },
 310   { L"Russian Standard Time", L"RU", L"Europe/Moscow Europe/Samara Europe/Volgograd" },
 311   { L"SA Eastern Standard Time", L"", L"America/Cayenne" },
 312   { L"SA Eastern Standard Time", L"AQ", L"Antarctica/Rothera" },
 313   { L"SA Eastern Standard Time", L"BR", L"America/Fortaleza America/Araguaina America/Belem America/Maceio America/Recife America/Santarem" },
 314   { L"SA Eastern Standard Time", L"GF", L"America/Cayenne" },
 315   { L"SA Eastern Standard Time", L"SR", L"America/Paramaribo" },
 316   { L"SA Eastern Standard Time", L"ZZ", L"Etc/GMT+3" },
 317   { L"SA Pacific Standard Time", L"", L"America/Bogota" },
 318   { L"SA Pacific Standard Time", L"CA", L"America/Coral_Harbour" },
 319   { L"SA Pacific Standard Time", L"CO", L"America/Bogota" },
 320   { L"SA Pacific Standard Time", L"EC", L"America/Guayaquil" },
 321   { L"SA Pacific Standard Time", L"HT", L"America/Port-au-Prince" },
 322   { L"SA Pacific Standard Time", L"JM", L"America/Jamaica" },
 323   { L"SA Pacific Standard Time", L"KY", L"America/Cayman" },
 324   { L"SA Pacific Standard Time", L"PA", L"America/Panama" },
 325   { L"SA Pacific Standard Time", L"PE", L"America/Lima" },
 326   { L"SA Pacific Standard Time", L"ZZ", L"Etc/GMT+5" },
 327   { L"SA Western Standard Time", L"", L"America/La_Paz" },
 328   { L"SA Western Standard Time", L"AG", L"America/Antigua" },
 329   { L"SA Western Standard Time", L"AI", L"America/Anguilla" },
 330   { L"SA Western Standard Time", L"AW", L"America/Aruba" },
 331   { L"SA Western Standard Time", L"BB", L"America/Barbados" },
 332   { L"SA Western Standard Time", L"BL", L"America/St_Barthelemy" },
 333   { L"SA Western Standard Time", L"BO", L"America/La_Paz" },
 334   { L"SA Western Standard Time", L"BR", L"America/Manaus America/Boa_Vista America/Eirunepe America/Porto_Velho America/Rio_Branco" },
 335   { L"SA Western Standard Time", L"CA", L"America/Blanc-Sablon" },
 336   { L"SA Western Standard Time", L"CW", L"America/Curacao" },
 337   { L"SA Western Standard Time", L"DM", L"America/Dominica" },
 338   { L"SA Western Standard Time", L"DO", L"America/Santo_Domingo" },
 339   { L"SA Western Standard Time", L"GD", L"America/Grenada" },
 340   { L"SA Western Standard Time", L"GP", L"America/Guadeloupe" },
 341   { L"SA Western Standard Time", L"GY", L"America/Guyana" },
 342   { L"SA Western Standard Time", L"KN", L"America/St_Kitts" },
 343   { L"SA Western Standard Time", L"LC", L"America/St_Lucia" },
 344   { L"SA Western Standard Time", L"MF", L"America/Marigot" },
 345   { L"SA Western Standard Time", L"MQ", L"America/Martinique" },
 346   { L"SA Western Standard Time", L"MS", L"America/Montserrat" },
 347   { L"SA Western Standard Time", L"PR", L"America/Puerto_Rico" },
 348   { L"SA Western Standard Time", L"TT", L"America/Port_of_Spain" },
 349   { L"SA Western Standard Time", L"VC", L"America/St_Vincent" },
 350   { L"SA Western Standard Time", L"VG", L"America/Tortola" },
 351   { L"SA Western Standard Time", L"VI", L"America/St_Thomas" },
 352   { L"SA Western Standard Time", L"ZZ", L"Etc/GMT+4" },
 353   { L"SE Asia Standard Time", L"", L"Asia/Bangkok" },
 354   { L"SE Asia Standard Time", L"AQ", L"Antarctica/Davis" },
 355   { L"SE Asia Standard Time", L"CX", L"Indian/Christmas" },
 356   { L"SE Asia Standard Time", L"ID", L"Asia/Jakarta Asia/Pontianak" },
 357   { L"SE Asia Standard Time", L"KH", L"Asia/Phnom_Penh" },
 358   { L"SE Asia Standard Time", L"LA", L"Asia/Vientiane" },
 359   { L"SE Asia Standard Time", L"MN", L"Asia/Hovd" },
 360   { L"SE Asia Standard Time", L"TH", L"Asia/Bangkok" },
 361   { L"SE Asia Standard Time", L"VN", L"Asia/Saigon" },
 362   { L"SE Asia Standard Time", L"ZZ", L"Etc/GMT-7" },
 363   { L"Samoa Standard Time", L"", L"Pacific/Apia" },
 364   { L"Samoa Standard Time", L"WS", L"Pacific/Apia" },
 365   { L"Singapore Standard Time", L"", L"Asia/Singapore" },
 366   { L"Singapore Standard Time", L"BN", L"Asia/Brunei" },
 367   { L"Singapore Standard Time", L"ID", L"Asia/Makassar" },
 368   { L"Singapore Standard Time", L"MY", L"Asia/Kuala_Lumpur Asia/Kuching" },
 369   { L"Singapore Standard Time", L"PH", L"Asia/Manila" },
 370   { L"Singapore Standard Time", L"SG", L"Asia/Singapore" },
 371   { L"Singapore Standard Time", L"ZZ", L"Etc/GMT-8" },
 372   { L"South Africa Standard Time", L"", L"Africa/Johannesburg" },
 373   { L"South Africa Standard Time", L"BI", L"Africa/Bujumbura" },
 374   { L"South Africa Standard Time", L"BW", L"Africa/Gaborone" },
 375   { L"South Africa Standard Time", L"CD", L"Africa/Lubumbashi" },
 376   { L"South Africa Standard Time", L"LS", L"Africa/Maseru" },
 377   { L"South Africa Standard Time", L"LY", L"Africa/Tripoli" },
 378   { L"South Africa Standard Time", L"MW", L"Africa/Blantyre" },
 379   { L"South Africa Standard Time", L"MZ", L"Africa/Maputo" },
 380   { L"South Africa Standard Time", L"RW", L"Africa/Kigali" },
 381   { L"South Africa Standard Time", L"SZ", L"Africa/Mbabane" },
 382   { L"South Africa Standard Time", L"ZA", L"Africa/Johannesburg" },
 383   { L"South Africa Standard Time", L"ZM", L"Africa/Lusaka" },
 384   { L"South Africa Standard Time", L"ZW", L"Africa/Harare" },
 385   { L"South Africa Standard Time", L"ZZ", L"Etc/GMT-2" },
 386   { L"Sri Lanka Standard Time", L"", L"Asia/Colombo" },
 387   { L"Sri Lanka Standard Time", L"LK", L"Asia/Colombo" },
 388   { L"Syria Standard Time", L"", L"Asia/Damascus" },
 389   { L"Syria Standard Time", L"SY", L"Asia/Damascus" },
 390   { L"Taipei Standard Time", L"", L"Asia/Taipei" },
 391   { L"Taipei Standard Time", L"TW", L"Asia/Taipei" },
 392   { L"Tasmania Standard Time", L"", L"Australia/Hobart" },
 393   { L"Tasmania Standard Time", L"AU", L"Australia/Hobart Australia/Currie" },
 394   { L"Tokyo Standard Time", L"", L"Asia/Tokyo" },
 395   { L"Tokyo Standard Time", L"ID", L"Asia/Jayapura" },
 396   { L"Tokyo Standard Time", L"JP", L"Asia/Tokyo" },
 397   { L"Tokyo Standard Time", L"PW", L"Pacific/Palau" },
 398   { L"Tokyo Standard Time", L"TL", L"Asia/Dili" },
 399   { L"Tokyo Standard Time", L"ZZ", L"Etc/GMT-9" },
 400   { L"Tonga Standard Time", L"", L"Pacific/Tongatapu" },
 401   { L"Tonga Standard Time", L"KI", L"Pacific/Enderbury" },
 402   { L"Tonga Standard Time", L"TO", L"Pacific/Tongatapu" },
 403   { L"Tonga Standard Time", L"ZZ", L"Etc/GMT-13" },
 404   { L"Turkey Standard Time", L"", L"Europe/Istanbul" },
 405   { L"Turkey Standard Time", L"TR", L"Europe/Istanbul" },
 406   { L"US Eastern Standard Time", L"", L"America/Indianapolis" },
 407   { L"US Eastern Standard Time", L"US", L"America/Indianapolis America/Indiana/Marengo America/Indiana/Vevay" },
 408   { L"US Mountain Standard Time", L"", L"America/Phoenix" },
 409   { L"US Mountain Standard Time", L"CA", L"America/Dawson_Creek" },
 410   { L"US Mountain Standard Time", L"MX", L"America/Hermosillo" },
 411   { L"US Mountain Standard Time", L"US", L"America/Phoenix" },
 412   { L"US Mountain Standard Time", L"ZZ", L"Etc/GMT+7" },
 413   { L"UTC", L"", L"Etc/GMT" },
 414   { L"UTC", L"GL", L"America/Danmarkshavn" },
 415   { L"UTC", L"ZZ", L"Etc/GMT" },
 416   { L"UTC+12", L"", L"Etc/GMT-12" },
 417   { L"UTC+12", L"KI", L"Pacific/Tarawa" },
 418   { L"UTC+12", L"MH", L"Pacific/Majuro Pacific/Kwajalein" },
 419   { L"UTC+12", L"NR", L"Pacific/Nauru" },
 420   { L"UTC+12", L"TV", L"Pacific/Funafuti" },
 421   { L"UTC+12", L"UM", L"Pacific/Wake" },
 422   { L"UTC+12", L"WF", L"Pacific/Wallis" },
 423   { L"UTC+12", L"ZZ", L"Etc/GMT-12" },
 424   { L"UTC-02", L"", L"Etc/GMT+2" },
 425   { L"UTC-02", L"BR", L"America/Noronha" },
 426   { L"UTC-02", L"GS", L"Atlantic/South_Georgia" },
 427   { L"UTC-02", L"ZZ", L"Etc/GMT+2" },
 428   { L"UTC-11", L"", L"Etc/GMT+11" },
 429   { L"UTC-11", L"AS", L"Pacific/Pago_Pago" },
 430   { L"UTC-11", L"NU", L"Pacific/Niue" },
 431   { L"UTC-11", L"UM", L"Pacific/Midway" },
 432   { L"UTC-11", L"ZZ", L"Etc/GMT+11" },
 433   { L"Ulaanbaatar Standard Time", L"", L"Asia/Ulaanbaatar" },
 434   { L"Ulaanbaatar Standard Time", L"MN", L"Asia/Ulaanbaatar Asia/Choibalsan" },
 435   { L"Venezuela Standard Time", L"", L"America/Caracas" },
 436   { L"Venezuela Standard Time", L"VE", L"America/Caracas" },
 437   { L"Vladivostok Standard Time", L"", L"Asia/Vladivostok" },
 438   { L"Vladivostok Standard Time", L"RU", L"Asia/Vladivostok Asia/Sakhalin" },
 439   { L"W. Australia Standard Time", L"", L"Australia/Perth" },
 440   { L"W. Australia Standard Time", L"AQ", L"Antarctica/Casey" },
 441   { L"W. Australia Standard Time", L"AU", L"Australia/Perth" },
 442   { L"W. Central Africa Standard Time", L"", L"Africa/Lagos" },
 443   { L"W. Central Africa Standard Time", L"AO", L"Africa/Luanda" },
 444   { L"W. Central Africa Standard Time", L"BJ", L"Africa/Porto-Novo" },
 445   { L"W. Central Africa Standard Time", L"CD", L"Africa/Kinshasa" },
 446   { L"W. Central Africa Standard Time", L"CF", L"Africa/Bangui" },
 447   { L"W. Central Africa Standard Time", L"CG", L"Africa/Brazzaville" },
 448   { L"W. Central Africa Standard Time", L"CM", L"Africa/Douala" },
 449   { L"W. Central Africa Standard Time", L"DZ", L"Africa/Algiers" },
 450   { L"W. Central Africa Standard Time", L"GA", L"Africa/Libreville" },
 451   { L"W. Central Africa Standard Time", L"GQ", L"Africa/Malabo" },
 452   { L"W. Central Africa Standard Time", L"NE", L"Africa/Niamey" },
 453   { L"W. Central Africa Standard Time", L"NG", L"Africa/Lagos" },
 454   { L"W. Central Africa Standard Time", L"TD", L"Africa/Ndjamena" },
 455   { L"W. Central Africa Standard Time", L"TN", L"Africa/Tunis" },
 456   { L"W. Central Africa Standard Time", L"ZZ", L"Etc/GMT-1" },
 457   { L"W. Europe Standard Time", L"", L"Europe/Berlin" },
 458   { L"W. Europe Standard Time", L"AD", L"Europe/Andorra" },
 459   { L"W. Europe Standard Time", L"AT", L"Europe/Vienna" },
 460   { L"W. Europe Standard Time", L"CH", L"Europe/Zurich" },
 461   { L"W. Europe Standard Time", L"DE", L"Europe/Berlin" },
 462   { L"W. Europe Standard Time", L"GI", L"Europe/Gibraltar" },
 463   { L"W. Europe Standard Time", L"IT", L"Europe/Rome" },
 464   { L"W. Europe Standard Time", L"LI", L"Europe/Vaduz" },
 465   { L"W. Europe Standard Time", L"LU", L"Europe/Luxembourg" },
 466   { L"W. Europe Standard Time", L"MC", L"Europe/Monaco" },
 467   { L"W. Europe Standard Time", L"MT", L"Europe/Malta" },
 468   { L"W. Europe Standard Time", L"NL", L"Europe/Amsterdam" },
 469   { L"W. Europe Standard Time", L"NO", L"Europe/Oslo" },
 470   { L"W. Europe Standard Time", L"SE", L"Europe/Stockholm" },
 471   { L"W. Europe Standard Time", L"SJ", L"Arctic/Longyearbyen" },
 472   { L"W. Europe Standard Time", L"SM", L"Europe/San_Marino" },
 473   { L"W. Europe Standard Time", L"VA", L"Europe/Vatican" },
 474   { L"West Asia Standard Time", L"", L"Asia/Tashkent" },
 475   { L"West Asia Standard Time", L"AQ", L"Antarctica/Mawson" },
 476   { L"West Asia Standard Time", L"KZ", L"Asia/Oral Asia/Aqtau Asia/Aqtobe" },
 477   { L"West Asia Standard Time", L"MV", L"Indian/Maldives" },
 478   { L"West Asia Standard Time", L"TF", L"Indian/Kerguelen" },
 479   { L"West Asia Standard Time", L"TJ", L"Asia/Dushanbe" },
 480   { L"West Asia Standard Time", L"TM", L"Asia/Ashgabat" },
 481   { L"West Asia Standard Time", L"UZ", L"Asia/Tashkent Asia/Samarkand" },
 482   { L"West Asia Standard Time", L"ZZ", L"Etc/GMT-5" },
 483   { L"West Pacific Standard Time", L"", L"Pacific/Port_Moresby" },
 484   { L"West Pacific Standard Time", L"AQ", L"Antarctica/DumontDUrville" },
 485   { L"West Pacific Standard Time", L"FM", L"Pacific/Truk" },
 486   { L"West Pacific Standard Time", L"GU", L"Pacific/Guam" },
 487   { L"West Pacific Standard Time", L"MP", L"Pacific/Saipan" },
 488   { L"West Pacific Standard Time", L"PG", L"Pacific/Port_Moresby" },
 489   { L"West Pacific Standard Time", L"ZZ", L"Etc/GMT-10" },
 490   { L"Yakutsk Standard Time", L"", L"Asia/Yakutsk" },
 491   { L"Yakutsk Standard Time", L"RU", L"Asia/Yakutsk" }
 492 };
 493
 494 #define TZMAP_SIZE (sizeof tzmap / sizeof tzmap[0])
 495
 496 static struct option longopts[] =
 497 {
 498   {"help", no_argument, NULL, 'h' },
 499   {"version", no_argument, NULL, 'V'},
 500   {NULL, 0, NULL, 0}
 501 };
 502
 503 static char opts[] = "hV";
 504
 505 #define REG_TZINFO L"SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation"
 506 #define REG_TZDB L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones"
 507
 508 /* Not available on pre-XP */
 509 GEOID WINAPI (*getusergeoid)(GEOCLASS);
 510 int WINAPI (*getgeoinfo)(GEOID, GEOTYPE, LPWSTR, int, LANGID);
 511
 512 static inline HKEY
 513 reg_open (HKEY pkey, PCWSTR path, const char *msg)
 514 {
 515   LONG ret;
 516   HKEY hkey;
 517
 518   ret = RegOpenKeyExW (pkey, path, 0, KEY_READ, &hkey);
 519   if (ret == ERROR_SUCCESS)
 520     return hkey;
 521   if (msg)
 522     fprintf (stderr, "%s: cannot open registry %s, error code %" PRIu32 "\n",
 523              program_invocation_short_name, msg, (unsigned int) ret);
 524   return NULL;
 525 }
 526
 527 /* For symmetry */
 528 #define reg_close(hkey) RegCloseKey(hkey)
 529
 530 static inline BOOL
 531 reg_query (HKEY hkey, PCWSTR value, PWCHAR buf, DWORD size, const char *msg)
 532 {
 533   LONG ret;
 534   DWORD type;
 535
 536   ret = RegQueryValueExW (hkey, value, 0, &type, (LPBYTE) buf, &size);
 537   if (ret == ERROR_SUCCESS)
 538     return TRUE;
 539   if (msg)
 540     fprintf (stderr, "%s: cannot query registry %s, error code %" PRIu32 "\n",
 541              program_invocation_short_name, msg, (unsigned int) ret);
 542   return FALSE;
 543 }
 544
 545 static inline BOOL
 546 reg_enum (HKEY hkey, int idx, PWCHAR name, DWORD size)
 547 {
 548   return RegEnumKeyExW (hkey, idx, name, &size, NULL, NULL, NULL, NULL)
 549          == ERROR_SUCCESS;
 550 }
 551
 552 static void
 553 usage (FILE *stream)
 554 {
 555   fprintf (stream, ""
 556   "Usage: %1$s [OPTION]\n"
 557   "\n"
 558   "Print POSIX-compatible timezone ID from current Windows timezone setting\n"
 559   "\n"
 560   "Options:\n"
 561   "  -h, --help               output usage information and exit.\n"
 562   "  -V, --version            output version information and exit.\n"
 563   "\n"
 564   "Use %1$s to set your TZ variable. In POSIX-compatible shells like bash,\n"
 565   "dash, mksh, or zsh:\n"
 566   "\n"
 567   "      export TZ=$(%1$s)\n"
 568   "\n"
 569   "In csh-compatible shells like tcsh:\n"
 570   "\n"
 571   "      setenv TZ `%1$s`\n"
 572   "\n", program_invocation_short_name);
 573 };
 574
 575 static void
 576 print_version ()
 577 {
 578   printf ("tzset (cygwin) %d.%d.%d\n"
 579           "POSIX-timezone generator\n"
 580           "Copyright (C) 2012 - %s Red Hat, Inc.\n"
 581           "This is free software; see the source for copying conditions.  There is NO\n"
 582           "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n",
 583           CYGWIN_VERSION_DLL_MAJOR / 1000,
 584           CYGWIN_VERSION_DLL_MAJOR % 1000,
 585           CYGWIN_VERSION_DLL_MINOR,
 586           strrchr (__DATE__, ' ') + 1);
 587 }
 588
 589 int
 590 main (int argc, char **argv)
 591 {
 592   BOOL ret;
 593   HKEY hkey, skey;
 594   WCHAR keyname[256], stdname[256], std2name[256], country[10], *spc;
 595   GEOID geo;
 596   int opt, idx, gotit = -1;
 597
 598   setlocale (LC_ALL, "");
 599   while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != EOF)
 600     switch (opt)
 601       {
 602       case 'h':
 603         usage (stdout);
 604         return 0;
 605       case 'V':
 606         print_version ();
 607         return 0;
 608       default:
 609         fprintf (stderr, "Try `%s --help' for more information.\n",
 610                  program_invocation_short_name);
 611         return 1;
 612       }
 613   if (optind < argc)
 614     {
 615         usage (stderr);
 616         return 1;
 617     }
 618
 619   /* First fetch current timezone information from registry. */
 620   hkey = reg_open (HKEY_LOCAL_MACHINE, REG_TZINFO, "timezone information");
 621   if (!hkey)
 622     return 1;
 623   /* Vista introduced the TimeZoneKeyName value, which simplifies the
 624      job a lot. */
 625   if (!reg_query (hkey, L"TimeZoneKeyName", keyname, sizeof keyname, NULL))
 626     {
 627       /* Pre-Vista we have a lot more to do.  First fetch the name of the
 628          Standard (non-DST) timezone.  If we can't get that, give up. */
 629       if (!reg_query (hkey, L"StandardName", stdname, sizeof stdname,
 630                       "timezone information"))
 631         {
 632           reg_close (hkey);
 633           return 1;
 634         }
 635       reg_close (hkey);
 636       /* Now open the timezone database registry key.  Every subkey is a
 637          timezone.  The key name is what we're after, but to find the right
 638          one, we have to compare the name of the previously fetched
 639          "StandardName" with the "Std" value in the timezone info... */
 640       hkey = reg_open (HKEY_LOCAL_MACHINE, REG_TZDB, "timezone database");
 641       if (!hkey)
 642         return 1;
 643       for (idx = 0; reg_enum (hkey, idx, keyname, sizeof keyname); ++idx)
 644         {
 645           skey = reg_open (hkey, keyname, NULL);
 646           if (skey)
 647             {
 648               /* ...however, on MUI-enabled machines, the names are not stored
 649                  directly in the above StandardName, rather it is a resource
 650                  pointer into tzres.dll.  This is stored in MUI_Std.
 651                  Fortunately it's easy to recognize this situation: If
 652                  StandardName starts with @, it's a resource pointer, otherwise
 653                  it's the cleartext value. */
 654               ret = reg_query (skey, stdname[0] == L'@' ? L"MUI_Std" : L"Std",
 655                                std2name, sizeof std2name, NULL);
 656               reg_close (skey);
 657               if (ret && !wcscmp (stdname, std2name))
 658                 break;
 659             }
 660         }
 661     }
 662   reg_close (hkey);
 663
 664   /* Fetch addresses of Geo functions.  As long as we support Windows 2000
 665      this is required, unfortunately. */
 666   getusergeoid = (GEOID (WINAPI *)())
 667                GetProcAddress (GetModuleHandle ("kernel32.dll"), "GetUserGeoID");
 668   getgeoinfo = (int (WINAPI *)(GEOID, GEOTYPE, LPWSTR, int, LANGID))
 669                GetProcAddress (GetModuleHandle ("kernel32.dll"), "GetGeoInfoW");
 670   *country = L'\0';
 671   /* Post-W2K we fetch the current Geo-location of the user and convert it
 672      to a ISO 3166-1 compatible nation code. */
 673   if (getusergeoid && getgeoinfo)
 674     {
 675       geo = getusergeoid (GEOCLASS_NATION);
 676       if (geo != GEOID_NOT_AVAILABLE)
 677         getgeoinfo (geo, GEO_ISO2, country, sizeof country, 0);
 678     }
 679   /* On W2K, or if the Geo-location isn't available, we use the locale
 680      setting instead. */
 681   if (!*country)
 682     GetLocaleInfoW (LOCALE_USER_DEFAULT, LOCALE_SISO3166CTRYNAME,
 683                     country, sizeof country);
 684
 685   /* Now iterate over the mapping table and find the right entry. */
 686   for (idx = 0; idx < TZMAP_SIZE; ++idx)
 687     {
 688       if (!wcscmp (keyname, tzmap[idx].win_tzkey))
 689         {
 690           if (gotit < 0)
 691             gotit = idx;
 692           if (!wcscmp (country, tzmap[idx].country))
 693             break;
 694         }
 695       else if (gotit >= 0)
 696         {
 697           idx = gotit;
 698           break;
 699         }
 700     }
 701   if (idx >= TZMAP_SIZE)
 702     {
 703       if (gotit < 0)
 704         {
 705           fprintf (stderr,
 706                    "%s: can't find matching POSIX timezone for "
 707                    "Windows timezone \"%ls\"\n",
 708                    program_invocation_short_name, keyname);
 709           return 1;
 710         }
 711       idx = gotit;
 712     }
 713   /* Got one.  Print it.
 714      Note: The tzmap array is in the R/O data section on x86_64.  Don't
 715            try to overwrite the space, as the code did originally. */
 716   spc = wcschr (tzmap[idx].posix_tzid, L' ');
 717   if (!spc)
 718     spc = wcschr (tzmap[idx].posix_tzid, L'\0');
 719   printf ("%.*ls\n", (int) (spc - tzmap[idx].posix_tzid), tzmap[idx].posix_tzid);
 720   return 0;
 721 }