<?php

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);
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzE3MDA5MzkzMjg2ODg3MSA2NzY5NjYyMjc5NzU1OTg3IDMzMjMxMDk0ODAxMTQ0MDM=