Imported Upstream version 5.0.0.42

Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b

mcs/class/System.IO.Compression/corefx/ZipArchiveEntry.Mono.cs

@@ -0,0 +1,22 @@
+using System.Diagnostics;
+
+namespace System.IO.Compression
+{
+	public partial class ZipArchiveEntry
+	{
+		internal static readonly ZipVersionMadeByPlatform CurrentZipPlatform = Path.PathSeparator == '/' ? 
+			ZipVersionMadeByPlatform.Unix : ZipVersionMadeByPlatform.Windows;
+
+		internal static string ParseFileName(string path, ZipVersionMadeByPlatform madeByPlatform)
+		{
+			switch (madeByPlatform) {
+			case ZipVersionMadeByPlatform.Windows:
+				return GetFileName_Windows(path);
+			case ZipVersionMadeByPlatform.Unix:
+				return GetFileName_Unix(path);
+			default:
+				return ParseFileName (path, CurrentZipPlatform);
+			}
+		}
+	}
+}