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Editing: GuessFromLicEntry.php
<?php declare(strict_types=1); namespace Sabre\VObject\TimezoneGuesser; use DateTimeZone; use Sabre\VObject\Component\VTimeZone; use Sabre\VObject\TimeZoneUtil; /** * Some clients add 'X-LIC-LOCATION' with the olson name. */ class GuessFromLicEntry implements TimezoneGuesser { public function guess(VTimeZone $vtimezone, bool $failIfUncertain = false): ?DateTimeZone { if (!isset($vtimezone->{'X-LIC-LOCATION'})) { return null; } $lic = (string) $vtimezone->{'X-LIC-LOCATION'}; // Libical generators may specify strings like // "SystemV/EST5EDT". For those we must remove the // SystemV part. if ('SystemV/' === substr($lic, 0, 8)) { $lic = substr($lic, 8); } return TimeZoneUtil::getTimeZone($lic, null, $failIfUncertain); } }
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