From 152cb8321e9eab1a555318a69213643ace62529c Mon Sep 17 00:00:00 2001
From: disarray2077 <86157825+disarray2077@users.noreply.github.com>
Date: Sat, 1 Jan 2022 20:58:24 -0300
Subject: [PATCH] Add Stream support to MD5

---
 .../corlib/src/Security/Cryptography/MD5.bf   | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/BeefLibs/corlib/src/Security/Cryptography/MD5.bf b/BeefLibs/corlib/src/Security/Cryptography/MD5.bf
index c79a0fd6..ed06f179 100644
--- a/BeefLibs/corlib/src/Security/Cryptography/MD5.bf
+++ b/BeefLibs/corlib/src/Security/Cryptography/MD5.bf
@@ -1,3 +1,5 @@
+using system.IO;
+
 namespace System.Security.Cryptography
 {
 	struct HashEncode
@@ -343,5 +345,26 @@ namespace System.Security.Cryptography
 			md5.Update(data);
 			return md5.Finish();
 		}
+		
+		public static Result<MD5Hash> Hash(Stream stream)
+		{
+			let md5 = scope MD5();
+
+			loop: while (true)
+			{
+				uint8[4096] buffer;
+				switch (stream.TryRead(.(&buffer, 4096)))
+				{
+				case .Ok(let bytes):
+					if (bytes == 0)
+						break loop;
+					md5.Update(.(&buffer, bytes));
+				case .Err(let err):
+					return .Err(err);
+				}
+			}
+
+			return md5.Finish();
+		}
 	}
 }