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<?php
/**
* SPDX-FileCopyrightText: 2015 Robin Appelman <robin@icewind.nl>
* SPDX-License-Identifier: MIT
*/
namespace Icewind\SMB;
class TimeZoneProvider implements ITimeZoneProvider {
/**
* @var string[]
*/
private $timeZones = [];
/**
* @var ISystem
*/
private $system;
/**
* @param ISystem $system
*/
public function __construct(ISystem $system) {
$this->system = $system;
}
public function get(string $host): string {
if (!isset($this->timeZones[$host])) {
$timeZone = null;
$net = $this->system->getNetPath();
// for local domain names we can assume same timezone
if ($net && $host && strpos($host, '.') !== false) {
$command = sprintf(
'%s time zone -S %s',
$net,
escapeshellarg($host)
);
$timeZone = exec($command);
}
if (!$timeZone) {
$date = $this->system->getDatePath();
if ($date) {
$timeZone = exec($date . " +%z");
} else {
$timeZone = date_default_timezone_get();
}
}
$this->timeZones[$host] = $timeZone;
}
return $this->timeZones[$host];
}
}
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