From ce75909b8bde39583e833115f547ab78043ab72d Mon Sep 17 00:00:00 2001
From: Marc Hernandez <marcsh@gmail.com>
Date: Mon, 25 Aug 2025 17:00:36 -0700
Subject: [PATCH] Bitwise Guid helpers

---
 util/Guid.cs | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 util/Guid.cs

diff --git a/util/Guid.cs b/util/Guid.cs
new file mode 100644
index 0000000..413ad06
--- /dev/null
+++ b/util/Guid.cs
@@ -0,0 +1,81 @@
+
+
+
+using System;
+
+namespace lib;
+
+public static class Guid
+{
+	public static System.Guid GuidFromLongs( long a, long b )
+	{
+		byte[] guidData = new byte[16];
+		Array.Copy( BitConverter.GetBytes( a ), guidData, 8 );
+		Array.Copy( BitConverter.GetBytes( b ), 0, guidData, 8, 8 );
+		return new System.Guid( guidData );
+	}
+
+	public static (long, long) ToLongs( this System.Guid guid )
+	{
+		var bytes = guid.ToByteArray();
+		var long1 = BitConverter.ToInt64( bytes, 0 );
+		var long2 = BitConverter.ToInt64( bytes, 8 );
+		return (long1, long2);
+	}
+
+	public static System.Guid GuidFromULongs( ulong a, ulong b )
+	{
+		byte[] guidData = new byte[16];
+		Array.Copy( BitConverter.GetBytes( a ), guidData, 8 );
+		Array.Copy( BitConverter.GetBytes( b ), 0, guidData, 8, 8 );
+		return new System.Guid( guidData );
+	}
+
+	public static (ulong, ulong) ToULongs( this System.Guid guid )
+	{
+		var bytes = guid.ToByteArray();
+		var ulong1 = BitConverter.ToUInt64( bytes, 0 );
+		var ulong2 = BitConverter.ToUInt64( bytes, 8 );
+		return (ulong1, ulong2);
+	}
+
+	public static System.Guid GuidFromInts( int a, int b, int c, int d )
+	{
+		byte[] guidData = new byte[16];
+		Array.Copy( BitConverter.GetBytes( a ), guidData, 4 );
+		Array.Copy( BitConverter.GetBytes( b ), 0, guidData, 4, 4 );
+		Array.Copy( BitConverter.GetBytes( c ), 0, guidData, 8, 4 );
+		Array.Copy( BitConverter.GetBytes( d ), 0, guidData, 12, 4 );
+		return new System.Guid( guidData );
+	}
+
+	public static (int, int, int, int) ToInts( this System.Guid guid )
+	{
+		var bytes = guid.ToByteArray();
+		var a = BitConverter.ToInt32( bytes, 0 );
+		var b = BitConverter.ToInt32( bytes, 4 );
+		var c = BitConverter.ToInt32( bytes, 8 );
+		var d = BitConverter.ToInt32( bytes, 12 );
+		return (a, b, c, d);
+	}
+
+	public static System.Guid GuidFromUInts( uint a, uint b, uint c, uint d )
+	{
+		byte[] guidData = new byte[16];
+		Array.Copy( BitConverter.GetBytes( a ), guidData, 4 );
+		Array.Copy( BitConverter.GetBytes( b ), 0, guidData, 4, 4 );
+		Array.Copy( BitConverter.GetBytes( c ), 0, guidData, 8, 4 );
+		Array.Copy( BitConverter.GetBytes( d ), 0, guidData, 12, 4 );
+		return new System.Guid( guidData );
+	}
+
+	public static (uint, uint, uint, uint) ToUInts( this System.Guid guid )
+	{
+		var bytes = guid.ToByteArray();
+		var a = BitConverter.ToUInt32( bytes, 0 );
+		var b = BitConverter.ToUInt32( bytes, 4 );
+		var c = BitConverter.ToUInt32( bytes, 8 );
+		var d = BitConverter.ToUInt32( bytes, 12 );
+		return (a, b, c, d);
+	}
+}