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TimeZoneUtil.php
273 lines
| 1 | <?php |
| 2 | |
| 3 | namespace AmeliaVendor\Sabre\VObject; |
| 4 | |
| 5 | use DateTimeZone; |
| 6 | use InvalidArgumentException; |
| 7 | use AmeliaVendor\Sabre\VObject\TimezoneGuesser\FindFromOffset; |
| 8 | use AmeliaVendor\Sabre\VObject\TimezoneGuesser\FindFromTimezoneIdentifier; |
| 9 | use AmeliaVendor\Sabre\VObject\TimezoneGuesser\FindFromTimezoneMap; |
| 10 | use AmeliaVendor\Sabre\VObject\TimezoneGuesser\GuessFromLicEntry; |
| 11 | use AmeliaVendor\Sabre\VObject\TimezoneGuesser\GuessFromMsTzId; |
| 12 | use AmeliaVendor\Sabre\VObject\TimezoneGuesser\TimezoneFinder; |
| 13 | use AmeliaVendor\Sabre\VObject\TimezoneGuesser\TimezoneGuesser; |
| 14 | |
| 15 | /** |
| 16 | * Time zone name translation. |
| 17 | * |
| 18 | * This file translates well-known time zone names into "Olson database" time zone names. |
| 19 | * |
| 20 | * @copyright Copyright (C) fruux GmbH (https://fruux.com/) |
| 21 | * @author Frank Edelhaeuser (fedel@users.sourceforge.net) |
| 22 | * @author Evert Pot (http://evertpot.com/) |
| 23 | * @license http://sabre.io/license/ Modified BSD License |
| 24 | */ |
| 25 | class TimeZoneUtil |
| 26 | { |
| 27 | /** @var self */ |
| 28 | private static $instance = null; |
| 29 | |
| 30 | /** @var TimezoneGuesser[] */ |
| 31 | private $timezoneGuessers = []; |
| 32 | |
| 33 | /** @var TimezoneFinder[] */ |
| 34 | private $timezoneFinders = []; |
| 35 | |
| 36 | private function __construct() |
| 37 | { |
| 38 | $this->addGuesser('lic', new GuessFromLicEntry()); |
| 39 | $this->addGuesser('msTzId', new GuessFromMsTzId()); |
| 40 | $this->addFinder('tzid', new FindFromTimezoneIdentifier()); |
| 41 | $this->addFinder('tzmap', new FindFromTimezoneMap()); |
| 42 | $this->addFinder('offset', new FindFromOffset()); |
| 43 | } |
| 44 | |
| 45 | private static function getInstance(): self |
| 46 | { |
| 47 | if (null === self::$instance) { |
| 48 | self::$instance = new self(); |
| 49 | } |
| 50 | |
| 51 | return self::$instance; |
| 52 | } |
| 53 | |
| 54 | private function addGuesser(string $key, TimezoneGuesser $guesser): void |
| 55 | { |
| 56 | $this->timezoneGuessers[$key] = $guesser; |
| 57 | } |
| 58 | |
| 59 | private function addFinder(string $key, TimezoneFinder $finder): void |
| 60 | { |
| 61 | $this->timezoneFinders[$key] = $finder; |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * This method will try to find out the correct timezone for an iCalendar |
| 66 | * date-time value. |
| 67 | * |
| 68 | * You must pass the contents of the TZID parameter, as well as the full |
| 69 | * calendar. |
| 70 | * |
| 71 | * If the lookup fails, this method will return the default PHP timezone |
| 72 | * (as configured using date_default_timezone_set, or the date.timezone ini |
| 73 | * setting). |
| 74 | * |
| 75 | * Alternatively, if $failIfUncertain is set to true, it will throw an |
| 76 | * exception if we cannot accurately determine the timezone. |
| 77 | */ |
| 78 | private function findTimeZone(string $tzid, ?Component $vcalendar = null, bool $failIfUncertain = false): DateTimeZone |
| 79 | { |
| 80 | foreach ($this->timezoneFinders as $timezoneFinder) { |
| 81 | $timezone = $timezoneFinder->find($tzid, $failIfUncertain); |
| 82 | if (!$timezone instanceof DateTimeZone) { |
| 83 | continue; |
| 84 | } |
| 85 | |
| 86 | return $timezone; |
| 87 | } |
| 88 | |
| 89 | if ($vcalendar) { |
| 90 | // If that didn't work, we will scan VTIMEZONE objects |
| 91 | foreach ($vcalendar->select('VTIMEZONE') as $vtimezone) { |
| 92 | if ((string) $vtimezone->TZID === $tzid) { |
| 93 | foreach ($this->timezoneGuessers as $timezoneGuesser) { |
| 94 | $timezone = $timezoneGuesser->guess($vtimezone, $failIfUncertain); |
| 95 | if (!$timezone instanceof DateTimeZone) { |
| 96 | continue; |
| 97 | } |
| 98 | |
| 99 | return $timezone; |
| 100 | } |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | if ($failIfUncertain) { |
| 106 | throw new InvalidArgumentException('We were unable to determine the correct PHP timezone for tzid: '.$tzid); |
| 107 | } |
| 108 | |
| 109 | // If we got all the way here, we default to whatever has been set as the PHP default timezone. |
| 110 | return new DateTimeZone(date_default_timezone_get()); |
| 111 | } |
| 112 | |
| 113 | public static function addTimezoneGuesser(string $key, TimezoneGuesser $guesser): void |
| 114 | { |
| 115 | self::getInstance()->addGuesser($key, $guesser); |
| 116 | } |
| 117 | |
| 118 | public static function addTimezoneFinder(string $key, TimezoneFinder $finder): void |
| 119 | { |
| 120 | self::getInstance()->addFinder($key, $finder); |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * @param string $tzid |
| 125 | * @param false $failIfUncertain |
| 126 | * |
| 127 | * @return DateTimeZone |
| 128 | */ |
| 129 | public static function getTimeZone($tzid, ?Component $vcalendar = null, $failIfUncertain = false) |
| 130 | { |
| 131 | return self::getInstance()->findTimeZone($tzid, $vcalendar, $failIfUncertain); |
| 132 | } |
| 133 | |
| 134 | public static function clean(): void |
| 135 | { |
| 136 | self::$instance = null; |
| 137 | } |
| 138 | |
| 139 | // Keeping things for backwards compatibility |
| 140 | /** |
| 141 | * @var array|null |
| 142 | * |
| 143 | * @deprecated |
| 144 | */ |
| 145 | public static $map = null; |
| 146 | |
| 147 | /** |
| 148 | * List of microsoft exchange timezone ids. |
| 149 | * |
| 150 | * Source: http://msdn.microsoft.com/en-us/library/aa563018(loband).aspx |
| 151 | * |
| 152 | * @deprecated |
| 153 | */ |
| 154 | public static $microsoftExchangeMap = [ |
| 155 | 0 => 'UTC', |
| 156 | 31 => 'Africa/Casablanca', |
| 157 | // Insanely, id #2 is used for both Europe/Lisbon, and Europe/Sarajevo. |
| 158 | // I'm not even kidding.. We handle this special case in the |
| 159 | // getTimeZone method. |
| 160 | 2 => 'Europe/Lisbon', |
| 161 | 1 => 'Europe/London', |
| 162 | 4 => 'Europe/Berlin', |
| 163 | 6 => 'Europe/Prague', |
| 164 | 3 => 'Europe/Paris', |
| 165 | 69 => 'Africa/Luanda', // This was a best guess |
| 166 | 7 => 'Europe/Athens', |
| 167 | 5 => 'Europe/Bucharest', |
| 168 | 49 => 'Africa/Cairo', |
| 169 | 50 => 'Africa/Harare', |
| 170 | 59 => 'Europe/Helsinki', |
| 171 | 27 => 'Asia/Jerusalem', |
| 172 | 26 => 'Asia/Baghdad', |
| 173 | 74 => 'Asia/Kuwait', |
| 174 | 51 => 'Europe/Moscow', |
| 175 | 56 => 'Africa/Nairobi', |
| 176 | 25 => 'Asia/Tehran', |
| 177 | 24 => 'Asia/Muscat', // Best guess |
| 178 | 54 => 'Asia/Baku', |
| 179 | 48 => 'Asia/Kabul', |
| 180 | 58 => 'Asia/Yekaterinburg', |
| 181 | 47 => 'Asia/Karachi', |
| 182 | 23 => 'Asia/Calcutta', |
| 183 | 62 => 'Asia/Kathmandu', |
| 184 | 46 => 'Asia/Almaty', |
| 185 | 71 => 'Asia/Dhaka', |
| 186 | 66 => 'Asia/Colombo', |
| 187 | 61 => 'Asia/Rangoon', |
| 188 | 22 => 'Asia/Bangkok', |
| 189 | 64 => 'Asia/Krasnoyarsk', |
| 190 | 45 => 'Asia/Shanghai', |
| 191 | 63 => 'Asia/Irkutsk', |
| 192 | 21 => 'Asia/Singapore', |
| 193 | 73 => 'Australia/Perth', |
| 194 | 75 => 'Asia/Taipei', |
| 195 | 20 => 'Asia/Tokyo', |
| 196 | 72 => 'Asia/Seoul', |
| 197 | 70 => 'Asia/Yakutsk', |
| 198 | 19 => 'Australia/Adelaide', |
| 199 | 44 => 'Australia/Darwin', |
| 200 | 18 => 'Australia/Brisbane', |
| 201 | 76 => 'Australia/Sydney', |
| 202 | 43 => 'Pacific/Guam', |
| 203 | 42 => 'Australia/Hobart', |
| 204 | 68 => 'Asia/Vladivostok', |
| 205 | 41 => 'Asia/Magadan', |
| 206 | 17 => 'Pacific/Auckland', |
| 207 | 40 => 'Pacific/Fiji', |
| 208 | 67 => 'Pacific/Tongatapu', |
| 209 | 29 => 'Atlantic/Azores', |
| 210 | 53 => 'Atlantic/Cape_Verde', |
| 211 | 30 => 'America/Noronha', |
| 212 | 8 => 'America/Sao_Paulo', // Best guess |
| 213 | 32 => 'America/Argentina/Buenos_Aires', |
| 214 | 60 => 'America/Godthab', |
| 215 | 28 => 'America/St_Johns', |
| 216 | 9 => 'America/Halifax', |
| 217 | 33 => 'America/Caracas', |
| 218 | 65 => 'America/Santiago', |
| 219 | 35 => 'America/Bogota', |
| 220 | 10 => 'America/New_York', |
| 221 | 34 => 'America/Indiana/Indianapolis', |
| 222 | 55 => 'America/Guatemala', |
| 223 | 11 => 'America/Chicago', |
| 224 | 37 => 'America/Mexico_City', |
| 225 | 36 => 'America/Edmonton', |
| 226 | 38 => 'America/Phoenix', |
| 227 | 12 => 'America/Denver', // Best guess |
| 228 | 13 => 'America/Los_Angeles', // Best guess |
| 229 | 14 => 'America/Anchorage', |
| 230 | 15 => 'Pacific/Honolulu', |
| 231 | 16 => 'Pacific/Midway', |
| 232 | 39 => 'Pacific/Kwajalein', |
| 233 | ]; |
| 234 | |
| 235 | /** |
| 236 | * This method will load in all the tz mapping information, if it's not yet |
| 237 | * done. |
| 238 | * |
| 239 | * @deprecated |
| 240 | */ |
| 241 | public static function loadTzMaps() |
| 242 | { |
| 243 | if (!is_null(self::$map)) { |
| 244 | return; |
| 245 | } |
| 246 | |
| 247 | self::$map = array_merge( |
| 248 | include __DIR__.'/timezonedata/windowszones.php', |
| 249 | include __DIR__.'/timezonedata/lotuszones.php', |
| 250 | include __DIR__.'/timezonedata/exchangezones.php', |
| 251 | include __DIR__.'/timezonedata/php-workaround.php' |
| 252 | ); |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * This method returns an array of timezone identifiers, that are supported |
| 257 | * by DateTimeZone(), but not returned by DateTimeZone::listIdentifiers(). |
| 258 | * |
| 259 | * We're not using DateTimeZone::listIdentifiers(DateTimeZone::ALL_WITH_BC) because: |
| 260 | * - It's not supported by some PHP versions as well as HHVM. |
| 261 | * - It also returns identifiers, that are invalid values for new DateTimeZone() on some PHP versions. |
| 262 | * (See timezonedata/php-bc.php and timezonedata php-workaround.php) |
| 263 | * |
| 264 | * @return array |
| 265 | * |
| 266 | * @deprecated |
| 267 | */ |
| 268 | public static function getIdentifiersBC() |
| 269 | { |
| 270 | return include __DIR__.'/timezonedata/php-bc.php'; |
| 271 | } |
| 272 | } |
| 273 |