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vendor/ramsey/uuid/src/BinaryUtils.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Ramsey\Uuid;
+
+/**
+ * Provides binary math utilities
+ */
+class BinaryUtils
+{
+    /**
+     * Applies the RFC 4122 variant field to the `clock_seq_hi_and_reserved` field
+     *
+     * @param $clockSeqHi
+     * @return int The high field of the clock sequence multiplexed with the variant
+     * @link http://tools.ietf.org/html/rfc4122#section-4.1.1
+     */
+    public static function applyVariant($clockSeqHi)
+    {
+        // Set the variant to RFC 4122
+        $clockSeqHi = $clockSeqHi & 0x3f;
+        $clockSeqHi &= ~(0xc0);
+        $clockSeqHi |= 0x80;
+
+        return $clockSeqHi;
+    }
+
+    /**
+     * Applies the RFC 4122 version number to the `time_hi_and_version` field
+     *
+     * @param string $timeHi
+     * @param integer $version
+     * @return int The high field of the timestamp multiplexed with the version number
+     * @link http://tools.ietf.org/html/rfc4122#section-4.1.3
+     */
+    public static function applyVersion($timeHi, $version)
+    {
+        $timeHi = hexdec($timeHi) & 0x0fff;
+        $timeHi &= ~(0xf000);
+        $timeHi |= $version << 12;
+
+        return $timeHi;
+    }
+}