minor fixes

MareSynchronos/Utils/Various.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MareSynchronos.Utils
+{
+    public static class VariousExtensions
+    {
+        public static DateTime GetLinkerTime(Assembly assembly)
+        {
+            const string BuildVersionMetadataPrefix = "+build";
+
+            var attribute = assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>();
+            if (attribute?.InformationalVersion != null)
+            {
+                var value = attribute.InformationalVersion;
+                var index = value.IndexOf(BuildVersionMetadataPrefix);
+                if (index > 0)
+                {
+                    value = value[(index + BuildVersionMetadataPrefix.Length)..];
+                    return DateTime.ParseExact(value, "yyyy-MM-ddTHH:mm:ss:fffZ", CultureInfo.InvariantCulture);
+                }
+            }
+
+            return default;
+        }
+    }
+}