media-cloud-sync / includes / sdk / google / ramsey / uuid / src / Converter / Time / GenericTimeConverter.php

GenericTimeConverter.php in Media Cloud Sync 1.1.0, at includes/sdk/google/ramsey/uuid/src/Converter/Time/GenericTimeConverter.php

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1	<?php
2
3	/**
4	* This file is part of the ramsey/uuid library
5	*
6	* For the full copyright and license information, please view the LICENSE
7	* file that was distributed with this source code.
8	*
9	* @copyright Copyright (c) Ben Ramsey <[email protected]>
10	* @license http://opensource.org/licenses/MIT MIT
11	*/
12	declare (strict_types=1);
13	namespace Dudlewebs\WPMCS\Ramsey\Uuid\Converter\Time;
14
15	use Dudlewebs\WPMCS\Ramsey\Uuid\Converter\TimeConverterInterface;
16	use Dudlewebs\WPMCS\Ramsey\Uuid\Math\CalculatorInterface;
17	use Dudlewebs\WPMCS\Ramsey\Uuid\Math\RoundingMode;
18	use Dudlewebs\WPMCS\Ramsey\Uuid\Type\Hexadecimal;
19	use Dudlewebs\WPMCS\Ramsey\Uuid\Type\Integer as IntegerObject;
20	use Dudlewebs\WPMCS\Ramsey\Uuid\Type\Time;
21	use function explode;
22	use function str_pad;
23	use const STR_PAD_LEFT;
24	/**
25	* GenericTimeConverter uses the provided calculator to calculate and convert
26	* time values
27	*
28	* @psalm-immutable
29	*/
30	class GenericTimeConverter implements TimeConverterInterface
31	{
32	/**
33	* The number of 100-nanosecond intervals from the Gregorian calendar epoch
34	* to the Unix epoch.
35	*/
36	private const GREGORIAN_TO_UNIX_INTERVALS = '122192928000000000';
37	/**
38	* The number of 100-nanosecond intervals in one second.
39	*/
40	private const SECOND_INTERVALS = '10000000';
41	/**
42	* The number of 100-nanosecond intervals in one microsecond.
43	*/
44	private const MICROSECOND_INTERVALS = '10';
45	/**
46	* @var CalculatorInterface
47	*/
48	private $calculator;
49	public function __construct(CalculatorInterface $calculator)
50	{
51	$this->calculator = $calculator;
52	}
53	public function calculateTime(string $seconds, string $microseconds): Hexadecimal
54	{
55	$timestamp = new Time($seconds, $microseconds);
56	// Convert the seconds into a count of 100-nanosecond intervals.
57	$sec = $this->calculator->multiply($timestamp->getSeconds(), new IntegerObject(self::SECOND_INTERVALS));
58	// Convert the microseconds into a count of 100-nanosecond intervals.
59	$usec = $this->calculator->multiply($timestamp->getMicroseconds(), new IntegerObject(self::MICROSECOND_INTERVALS));
60	// Combine the seconds and microseconds intervals and add the count of
61	// 100-nanosecond intervals from the Gregorian calendar epoch to the
62	// Unix epoch. This gives us the correct count of 100-nanosecond
63	// intervals since the Gregorian calendar epoch for the given seconds
64	// and microseconds.
65	/** @var IntegerObject $uuidTime */
66	$uuidTime = $this->calculator->add($sec, $usec, new IntegerObject(self::GREGORIAN_TO_UNIX_INTERVALS));
67	$uuidTimeHex = str_pad($this->calculator->toHexadecimal($uuidTime)->toString(), 16, '0', STR_PAD_LEFT);
68	return new Hexadecimal($uuidTimeHex);
69	}
70	public function convertTime(Hexadecimal $uuidTimestamp): Time
71	{
72	// From the total, subtract the number of 100-nanosecond intervals from
73	// the Gregorian calendar epoch to the Unix epoch. This gives us the
74	// number of 100-nanosecond intervals from the Unix epoch, which also
75	// includes the microtime.
76	$epochNanoseconds = $this->calculator->subtract($this->calculator->toInteger($uuidTimestamp), new IntegerObject(self::GREGORIAN_TO_UNIX_INTERVALS));
77	// Convert the 100-nanosecond intervals into seconds and microseconds.
78	$unixTimestamp = $this->calculator->divide(RoundingMode::HALF_UP, 6, $epochNanoseconds, new IntegerObject(self::SECOND_INTERVALS));
79	$split = explode('.', (string) $unixTimestamp, 2);
80	return new Time($split[0], $split[1] ?? 0);
81	}
82	}
83