1 files changed, 88 insertions, 0 deletions
diff --git a/vendor/ramsey/uuid/src/Generator/CombGenerator.php b/vendor/ramsey/uuid/src/Generator/CombGenerator.php
new file mode 100644
index 000000000..7a9482318
--- /dev/null
+++ b/vendor/ramsey/uuid/src/Generator/CombGenerator.php
@@ -0,0 +1,88 @@
+<?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
+ * @link https://benramsey.com/projects/ramsey-uuid/ Documentation
+ * @link https://packagist.org/packages/ramsey/uuid Packagist
+ * @link https://github.com/ramsey/uuid GitHub
+ */
+
+namespace Ramsey\Uuid\Generator;
+
+use Ramsey\Uuid\Converter\NumberConverterInterface;
+
+/**
+ * CombGenerator provides functionality to generate COMB (combined GUID/timestamp)
+ * sequential UUIDs
+ *
+ * @link https://en.wikipedia.org/wiki/Globally_unique_identifier#Sequential_algorithms
+ */
+class CombGenerator implements RandomGeneratorInterface
+{
+    const TIMESTAMP_BYTES = 6;
+
+    /**
+     * @var RandomGeneratorInterface
+     */
+    private $randomGenerator;
+
+    /**
+     * @var NumberConverterInterface
+     */
+    private $converter;
+
+    /**
+     * Constructs a `CombGenerator` using a random-number generator and a number converter
+     *
+     * @param RandomGeneratorInterface $generator Random-number generator for the non-time part.
+     * @param NumberConverterInterface $numberConverter Instance of number converter.
+     */
+    public function __construct(RandomGeneratorInterface $generator, NumberConverterInterface $numberConverter)
+    {
+        $this->converter = $numberConverter;
+        $this->randomGenerator = $generator;
+    }
+
+    /**
+     * Generates a string of binary data of the specified length
+     *
+     * @param integer $length The number of bytes of random binary data to generate
+     * @return string A binary string
+     * @throws \Ramsey\Uuid\Exception\UnsatisfiedDependencyException if `Moontoast\Math\BigNumber` is not present
+     * @throws \InvalidArgumentException if length is not a positive integer
+     * @throws \Exception
+     */
+    public function generate($length)
+    {
+        if ($length < self::TIMESTAMP_BYTES || $length < 0) {
+            throw new \InvalidArgumentException('Length must be a positive integer.');
+        }
+
+        $hash = '';
+
+        if (self::TIMESTAMP_BYTES > 0 && $length > self::TIMESTAMP_BYTES) {
+            $hash = $this->randomGenerator->generate($length - self::TIMESTAMP_BYTES);
+        }
+
+        $lsbTime = str_pad($this->converter->toHex($this->timestamp()), self::TIMESTAMP_BYTES * 2, '0', STR_PAD_LEFT);
+
+        return hex2bin(str_pad(bin2hex($hash), $length - self::TIMESTAMP_BYTES, '0') . $lsbTime);
+    }
+
+    /**
+     * Returns current timestamp as integer, precise to 0.00001 seconds
+     *
+     * @return string
+     */
+    private function timestamp()
+    {
+        $time = explode(' ', microtime(false));
+
+        return $time[1] . substr($time[0], 2, 5);
+    }
+}