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-rw-r--r--vendor/ramsey/uuid/src/Provider/Node/StaticNodeProvider.php76
1 files changed, 76 insertions, 0 deletions
diff --git a/vendor/ramsey/uuid/src/Provider/Node/StaticNodeProvider.php b/vendor/ramsey/uuid/src/Provider/Node/StaticNodeProvider.php
new file mode 100644
index 000000000..51f1b02ea
--- /dev/null
+++ b/vendor/ramsey/uuid/src/Provider/Node/StaticNodeProvider.php
@@ -0,0 +1,76 @@
+<?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\Provider\Node;
+
+use Ramsey\Uuid\Exception\InvalidArgumentException;
+use Ramsey\Uuid\Provider\NodeProviderInterface;
+use Ramsey\Uuid\Type\Hexadecimal;
+
+use function dechex;
+use function hexdec;
+use function str_pad;
+use function substr;
+
+use const STR_PAD_LEFT;
+
+/**
+ * StaticNodeProvider provides a static node value with the multicast bit set
+ *
+ * @link http://tools.ietf.org/html/rfc4122#section-4.5 RFC 4122, ยง 4.5: Node IDs that Do Not Identify the Host
+ */
+class StaticNodeProvider implements NodeProviderInterface
+{
+ /**
+ * @var Hexadecimal
+ */
+ private $node;
+
+ /**
+ * @param Hexadecimal $node The static node value to use
+ */
+ public function __construct(Hexadecimal $node)
+ {
+ if (strlen($node->toString()) > 12) {
+ throw new InvalidArgumentException(
+ 'Static node value cannot be greater than 12 hexadecimal characters'
+ );
+ }
+
+ $this->node = $this->setMulticastBit($node);
+ }
+
+ public function getNode(): Hexadecimal
+ {
+ return $this->node;
+ }
+
+ /**
+ * Set the multicast bit for the static node value
+ */
+ private function setMulticastBit(Hexadecimal $node): Hexadecimal
+ {
+ $nodeHex = str_pad($node->toString(), 12, '0', STR_PAD_LEFT);
+ $firstOctet = substr($nodeHex, 0, 2);
+
+ $firstOctet = str_pad(
+ dechex(hexdec($firstOctet) | 0x01),
+ 2,
+ '0',
+ STR_PAD_LEFT
+ );
+
+ return new Hexadecimal($firstOctet . substr($nodeHex, 2));
+ }
+}