[Style] Add Date to build title

SabreTools.Helper/Tools/Style.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Reflection;
 using System.Text;
 using System.Text.RegularExpressions;
 using System.Web;
@@ -575,6 +576,32 @@ namespace SabreTools.Helper.Tools
 			return Encoding.Default;
 		}
 
+		/// <summary>
+		/// http://stackoverflow.com/questions/1600962/displaying-the-build-date
+		/// </summary>
+		public static DateTime GetLinkerTime(this Assembly assembly, TimeZoneInfo target = null)
+		{
+			var filePath = assembly.Location;
+			const int c_PeHeaderOffset = 60;
+			const int c_LinkerTimestampOffset = 8;
+
+			var buffer = new byte[2048];
+
+			using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
+				stream.Read(buffer, 0, 2048);
+
+			var offset = BitConverter.ToInt32(buffer, c_PeHeaderOffset);
+			var secondsSince1970 = BitConverter.ToInt32(buffer, offset + c_LinkerTimestampOffset);
+			var epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+
+			var linkTimeUtc = epoch.AddSeconds(secondsSince1970);
+
+			var tz = target ?? TimeZoneInfo.Local;
+			var localTime = TimeZoneInfo.ConvertTimeFromUtc(linkTimeUtc, tz);
+
+			return localTime;
+		}
+
 		#endregion
 	}
 }