273 lines
8.6 KiB
PHP
Executable File
273 lines
8.6 KiB
PHP
Executable File
<?php
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namespace Sabre\VObject;
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use DateTimeZone;
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use InvalidArgumentException;
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use Sabre\VObject\TimezoneGuesser\FindFromOffset;
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use Sabre\VObject\TimezoneGuesser\FindFromTimezoneIdentifier;
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use Sabre\VObject\TimezoneGuesser\FindFromTimezoneMap;
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use Sabre\VObject\TimezoneGuesser\GuessFromLicEntry;
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use Sabre\VObject\TimezoneGuesser\GuessFromMsTzId;
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use Sabre\VObject\TimezoneGuesser\TimezoneFinder;
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use Sabre\VObject\TimezoneGuesser\TimezoneGuesser;
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/**
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* Time zone name translation.
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*
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* This file translates well-known time zone names into "Olson database" time zone names.
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*
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* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
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* @author Frank Edelhaeuser (fedel@users.sourceforge.net)
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* @author Evert Pot (http://evertpot.com/)
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* @license http://sabre.io/license/ Modified BSD License
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*/
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class TimeZoneUtil
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{
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/** @var self */
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private static $instance = null;
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/** @var TimezoneGuesser[] */
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private $timezoneGuessers = [];
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/** @var TimezoneFinder[] */
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private $timezoneFinders = [];
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private function __construct()
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{
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$this->addGuesser('lic', new GuessFromLicEntry());
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$this->addGuesser('msTzId', new GuessFromMsTzId());
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$this->addFinder('tzid', new FindFromTimezoneIdentifier());
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$this->addFinder('tzmap', new FindFromTimezoneMap());
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$this->addFinder('offset', new FindFromOffset());
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}
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private static function getInstance(): self
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{
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if (null === self::$instance) {
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self::$instance = new self();
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}
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return self::$instance;
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}
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private function addGuesser(string $key, TimezoneGuesser $guesser): void
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{
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$this->timezoneGuessers[$key] = $guesser;
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}
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private function addFinder(string $key, TimezoneFinder $finder): void
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{
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$this->timezoneFinders[$key] = $finder;
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}
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/**
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* This method will try to find out the correct timezone for an iCalendar
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* date-time value.
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*
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* You must pass the contents of the TZID parameter, as well as the full
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* calendar.
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*
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* If the lookup fails, this method will return the default PHP timezone
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* (as configured using date_default_timezone_set, or the date.timezone ini
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* setting).
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*
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* Alternatively, if $failIfUncertain is set to true, it will throw an
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* exception if we cannot accurately determine the timezone.
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*/
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private function findTimeZone(string $tzid, Component $vcalendar = null, bool $failIfUncertain = false): DateTimeZone
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{
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foreach ($this->timezoneFinders as $timezoneFinder) {
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$timezone = $timezoneFinder->find($tzid, $failIfUncertain);
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if (!$timezone instanceof DateTimeZone) {
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continue;
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}
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return $timezone;
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}
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if ($vcalendar) {
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// If that didn't work, we will scan VTIMEZONE objects
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foreach ($vcalendar->select('VTIMEZONE') as $vtimezone) {
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if ((string) $vtimezone->TZID === $tzid) {
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foreach ($this->timezoneGuessers as $timezoneGuesser) {
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$timezone = $timezoneGuesser->guess($vtimezone, $failIfUncertain);
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if (!$timezone instanceof DateTimeZone) {
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continue;
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}
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return $timezone;
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}
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}
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}
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}
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if ($failIfUncertain) {
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throw new InvalidArgumentException('We were unable to determine the correct PHP timezone for tzid: '.$tzid);
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}
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// If we got all the way here, we default to whatever has been set as the PHP default timezone.
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return new DateTimeZone(date_default_timezone_get());
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}
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public static function addTimezoneGuesser(string $key, TimezoneGuesser $guesser): void
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{
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self::getInstance()->addGuesser($key, $guesser);
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}
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public static function addTimezoneFinder(string $key, TimezoneFinder $finder): void
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{
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self::getInstance()->addFinder($key, $finder);
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}
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/**
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* @param string $tzid
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* @param false $failIfUncertain
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*
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* @return DateTimeZone
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*/
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public static function getTimeZone($tzid, Component $vcalendar = null, $failIfUncertain = false)
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{
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return self::getInstance()->findTimeZone($tzid, $vcalendar, $failIfUncertain);
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}
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public static function clean(): void
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{
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self::$instance = null;
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}
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// Keeping things for backwards compatibility
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/**
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* @var array|null
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*
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* @deprecated
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*/
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public static $map = null;
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/**
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* List of microsoft exchange timezone ids.
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*
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* Source: http://msdn.microsoft.com/en-us/library/aa563018(loband).aspx
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*
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* @deprecated
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*/
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public static $microsoftExchangeMap = [
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0 => 'UTC',
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31 => 'Africa/Casablanca',
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// Insanely, id #2 is used for both Europe/Lisbon, and Europe/Sarajevo.
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// I'm not even kidding.. We handle this special case in the
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// getTimeZone method.
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2 => 'Europe/Lisbon',
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1 => 'Europe/London',
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4 => 'Europe/Berlin',
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6 => 'Europe/Prague',
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3 => 'Europe/Paris',
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69 => 'Africa/Luanda', // This was a best guess
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7 => 'Europe/Athens',
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5 => 'Europe/Bucharest',
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49 => 'Africa/Cairo',
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50 => 'Africa/Harare',
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59 => 'Europe/Helsinki',
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27 => 'Asia/Jerusalem',
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26 => 'Asia/Baghdad',
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74 => 'Asia/Kuwait',
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51 => 'Europe/Moscow',
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56 => 'Africa/Nairobi',
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25 => 'Asia/Tehran',
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24 => 'Asia/Muscat', // Best guess
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54 => 'Asia/Baku',
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48 => 'Asia/Kabul',
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58 => 'Asia/Yekaterinburg',
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47 => 'Asia/Karachi',
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23 => 'Asia/Calcutta',
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62 => 'Asia/Kathmandu',
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46 => 'Asia/Almaty',
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71 => 'Asia/Dhaka',
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66 => 'Asia/Colombo',
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61 => 'Asia/Rangoon',
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22 => 'Asia/Bangkok',
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64 => 'Asia/Krasnoyarsk',
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45 => 'Asia/Shanghai',
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63 => 'Asia/Irkutsk',
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21 => 'Asia/Singapore',
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73 => 'Australia/Perth',
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75 => 'Asia/Taipei',
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20 => 'Asia/Tokyo',
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72 => 'Asia/Seoul',
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70 => 'Asia/Yakutsk',
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19 => 'Australia/Adelaide',
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44 => 'Australia/Darwin',
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18 => 'Australia/Brisbane',
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76 => 'Australia/Sydney',
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43 => 'Pacific/Guam',
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42 => 'Australia/Hobart',
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68 => 'Asia/Vladivostok',
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41 => 'Asia/Magadan',
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17 => 'Pacific/Auckland',
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40 => 'Pacific/Fiji',
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67 => 'Pacific/Tongatapu',
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29 => 'Atlantic/Azores',
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53 => 'Atlantic/Cape_Verde',
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30 => 'America/Noronha',
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8 => 'America/Sao_Paulo', // Best guess
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32 => 'America/Argentina/Buenos_Aires',
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60 => 'America/Godthab',
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28 => 'America/St_Johns',
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9 => 'America/Halifax',
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33 => 'America/Caracas',
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65 => 'America/Santiago',
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35 => 'America/Bogota',
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10 => 'America/New_York',
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34 => 'America/Indiana/Indianapolis',
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55 => 'America/Guatemala',
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11 => 'America/Chicago',
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37 => 'America/Mexico_City',
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36 => 'America/Edmonton',
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38 => 'America/Phoenix',
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12 => 'America/Denver', // Best guess
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13 => 'America/Los_Angeles', // Best guess
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14 => 'America/Anchorage',
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15 => 'Pacific/Honolulu',
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16 => 'Pacific/Midway',
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39 => 'Pacific/Kwajalein',
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];
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/**
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* This method will load in all the tz mapping information, if it's not yet
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* done.
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*
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* @deprecated
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*/
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public static function loadTzMaps()
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{
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if (!is_null(self::$map)) {
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return;
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}
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self::$map = array_merge(
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include __DIR__.'/timezonedata/windowszones.php',
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include __DIR__.'/timezonedata/lotuszones.php',
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include __DIR__.'/timezonedata/exchangezones.php',
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include __DIR__.'/timezonedata/php-workaround.php'
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);
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}
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/**
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* This method returns an array of timezone identifiers, that are supported
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* by DateTimeZone(), but not returned by DateTimeZone::listIdentifiers().
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*
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* We're not using DateTimeZone::listIdentifiers(DateTimeZone::ALL_WITH_BC) because:
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* - It's not supported by some PHP versions as well as HHVM.
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* - It also returns identifiers, that are invalid values for new DateTimeZone() on some PHP versions.
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* (See timezonedata/php-bc.php and timezonedata php-workaround.php)
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*
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* @return array
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*
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* @deprecated
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*/
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public static function getIdentifiersBC()
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{
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return include __DIR__.'/timezonedata/php-bc.php';
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}
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}
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