1 files changed, 183 insertions, 0 deletions
diff --git a/vendor/ramsey/uuid/src/Converter/Time/PhpTimeConverter.php b/vendor/ramsey/uuid/src/Converter/Time/PhpTimeConverter.php
new file mode 100644
index 0000000..538d2f2
--- /dev/null
+++ b/vendor/ramsey/uuid/src/Converter/Time/PhpTimeConverter.php
@@ -0,0 +1,183 @@
+<?php
+
+/**
+ * This file is part of the ramsey/uuid library
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
+ * @license http://opensource.org/licenses/MIT MIT
+ */
+
+declare(strict_types=1);
+
+namespace Ramsey\Uuid\Converter\Time;
+
+use Ramsey\Uuid\Converter\TimeConverterInterface;
+use Ramsey\Uuid\Math\BrickMathCalculator;
+use Ramsey\Uuid\Math\CalculatorInterface;
+use Ramsey\Uuid\Type\Hexadecimal;
+use Ramsey\Uuid\Type\Integer as IntegerObject;
+use Ramsey\Uuid\Type\Time;
+
+use function count;
+use function dechex;
+use function explode;
+use function is_float;
+use function is_int;
+use function str_pad;
+use function strlen;
+use function substr;
+
+use const STR_PAD_LEFT;
+use const STR_PAD_RIGHT;
+
+/**
+ * PhpTimeConverter uses built-in PHP functions and standard math operations
+ * available to the PHP programming language to provide facilities for
+ * converting parts of time into representations that may be used in UUIDs
+ *
+ * @psalm-immutable
+ */
+class PhpTimeConverter implements TimeConverterInterface
+{
+    /**
+     * The number of 100-nanosecond intervals from the Gregorian calendar epoch
+     * to the Unix epoch.
+     */
+    private const GREGORIAN_TO_UNIX_INTERVALS = 0x01b21dd213814000;
+
+    /**
+     * The number of 100-nanosecond intervals in one second.
+     */
+    private const SECOND_INTERVALS = 10000000;
+
+    /**
+     * The number of 100-nanosecond intervals in one microsecond.
+     */
+    private const MICROSECOND_INTERVALS = 10;
+
+    /**
+     * @var CalculatorInterface
+     */
+    private $calculator;
+
+    /**
+     * @var TimeConverterInterface
+     */
+    private $fallbackConverter;
+
+    /**
+     * @var int
+     */
+    private $phpPrecision;
+
+    public function __construct(
+        ?CalculatorInterface $calculator = null,
+        ?TimeConverterInterface $fallbackConverter = null
+    ) {
+        if ($calculator === null) {
+            $calculator = new BrickMathCalculator();
+        }
+
+        if ($fallbackConverter === null) {
+            $fallbackConverter = new GenericTimeConverter($calculator);
+        }
+
+        $this->calculator = $calculator;
+        $this->fallbackConverter = $fallbackConverter;
+        $this->phpPrecision = (int) ini_get('precision');
+    }
+
+    public function calculateTime(string $seconds, string $microseconds): Hexadecimal
+    {
+        $seconds = new IntegerObject($seconds);
+        $microseconds = new IntegerObject($microseconds);
+
+        // Calculate the count of 100-nanosecond intervals since the Gregorian
+        // calendar epoch for the given seconds and microseconds.
+        $uuidTime = ((int) $seconds->toString() * self::SECOND_INTERVALS)
+            + ((int) $microseconds->toString() * self::MICROSECOND_INTERVALS)
+            + self::GREGORIAN_TO_UNIX_INTERVALS;
+
+        // Check to see whether we've overflowed the max/min integer size.
+        // If so, we will default to a different time converter.
+        /** @psalm-suppress RedundantCondition */
+        if (!is_int($uuidTime)) {
+            return $this->fallbackConverter->calculateTime(
+                $seconds->toString(),
+                $microseconds->toString()
+            );
+        }
+
+        return new Hexadecimal(str_pad(dechex($uuidTime), 16, '0', STR_PAD_LEFT));
+    }
+
+    public function convertTime(Hexadecimal $uuidTimestamp): Time
+    {
+        $timestamp = $this->calculator->toInteger($uuidTimestamp);
+
+        // Convert the 100-nanosecond intervals into seconds and microseconds.
+        $splitTime = $this->splitTime(
+            ((int) $timestamp->toString() - self::GREGORIAN_TO_UNIX_INTERVALS)
+            / self::SECOND_INTERVALS
+        );
+
+        if (count($splitTime) === 0) {
+            return $this->fallbackConverter->convertTime($uuidTimestamp);
+        }
+
+        return new Time($splitTime['sec'], $splitTime['usec']);
+    }
+
+    /**
+     * @param int|float $time The time to split into seconds and microseconds
+     *
+     * @return string[]
+     */
+    private function splitTime($time): array
+    {
+        $split = explode('.', (string) $time, 2);
+
+        // If the $time value is a float but $split only has 1 element, then the
+        // float math was rounded up to the next second, so we want to return
+        // an empty array to allow use of the fallback converter.
+        if (is_float($time) && count($split) === 1) {
+            return [];
+        }
+
+        if (count($split) === 1) {
+            return [
+                'sec' => $split[0],
+                'usec' => '0',
+            ];
+        }
+
+        // If the microseconds are less than six characters AND the length of
+        // the number is greater than or equal to the PHP precision, then it's
+        // possible that we lost some precision for the microseconds. Return an
+        // empty array, so that we can choose to use the fallback converter.
+        if (strlen($split[1]) < 6 && strlen((string) $time) >= $this->phpPrecision) {
+            return [];
+        }
+
+        $microseconds = $split[1];
+
+        // Ensure the microseconds are no longer than 6 digits. If they are,
+        // truncate the number to the first 6 digits and round up, if needed.
+        if (strlen($microseconds) > 6) {
+            $roundingDigit = (int) substr($microseconds, 6, 1);
+            $microseconds = (int) substr($microseconds, 0, 6);
+
+            if ($roundingDigit >= 5) {
+                $microseconds++;
+            }
+        }
+
+        return [
+            'sec' => $split[0],
+            'usec' => str_pad((string) $microseconds, 6, '0', STR_PAD_RIGHT),
+        ];
+    }
+}