<?php
namespace Ramsey\Uuid\Generator;
use Ramsey\Uuid\BinaryUtils;
use Ramsey\Uuid\Converter\TimeConverterInterface;
use Ramsey\Uuid\Provider\NodeProviderInterface;
use Ramsey\Uuid\Provider\TimeProviderInterface;
class DefaultTimeGenerator implements TimeGeneratorInterface
{
private $nodeProvider;
private $timeConverter;
private $timeProvider;
public function __construct(
NodeProviderInterface $nodeProvider,
TimeConverterInterface $timeConverter,
TimeProviderInterface $timeProvider
) {
$this->nodeProvider = $nodeProvider;
$this->timeConverter = $timeConverter;
$this->timeProvider = $timeProvider;
}
public function generate($node = null, $clockSeq = null)
{
$node = $this->getValidNode($node);
if ($clockSeq === null) {
$clockSeq = random_int(0, 0x3fff);
}
$timeOfDay = $this->timeProvider->currentTime();
$uuidTime = $this->timeConverter->calculateTime($timeOfDay['sec'], $timeOfDay['usec']);
$timeHi = BinaryUtils::applyVersion($uuidTime['hi'], 1);
$clockSeqHi = BinaryUtils::applyVariant($clockSeq >> 8);
$hex = vsprintf(
'%08s%04s%04s%02s%02s%012s',
array(
$uuidTime['low'],
$uuidTime['mid'],
sprintf('%04x', $timeHi),
sprintf('%02x', $clockSeqHi),
sprintf('%02x', $clockSeq & 0xff),
$node,
)
);
return hex2bin($hex);
}
protected function getValidNode($node)
{
if ($node === null) {
$node = $this->nodeProvider->getNode();
}
if (is_int($node)) {
$node = sprintf('%012x', $node);
}
if (!ctype_xdigit($node) || strlen($node) > 12) {
throw new \InvalidArgumentException('Invalid node value');
}
return strtolower(sprintf('%012s', $node));
}
}