46 lines
1.1 KiB
PHP
46 lines
1.1 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace ZipStream;
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use DateInterval;
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use DateTimeImmutable;
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use DateTimeInterface;
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use ZipStream\Exception\DosTimeOverflowException;
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/**
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* @internal
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*/
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abstract class Time
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{
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private const DOS_MINIMUM_DATE = '1980-01-01 00:00:00Z';
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public static function dateTimeToDosTime(DateTimeInterface $dateTime): int
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{
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$dosMinimumDate = new DateTimeImmutable(self::DOS_MINIMUM_DATE);
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if ($dateTime->getTimestamp() < $dosMinimumDate->getTimestamp()) {
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throw new DosTimeOverflowException(dateTime: $dateTime);
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}
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$dateTime = DateTimeImmutable::createFromInterface($dateTime)->sub(new DateInterval('P1980Y'));
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['year' => $year,
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'mon' => $month,
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'mday' => $day,
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'hours' => $hour,
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'minutes' => $minute,
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'seconds' => $second
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] = getdate($dateTime->getTimestamp());
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return
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($year << 25) |
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($month << 21) |
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($day << 16) |
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($hour << 11) |
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($minute << 5) |
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($second >> 1);
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}
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}
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