Imported Upstream version 5.0.0.42

Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b

external/linker/tuner/Mono.Tuner/RemoveResources.cs

@@ -0,0 +1,57 @@
+using System;
+
+using Mono.Linker;
+using Mono.Linker.Steps;
+
+using Mono.Cecil;
+
+namespace Mono.Tuner {
+
+	public class RemoveResources : IStep {
+
+		readonly I18nAssemblies assemblies;
+
+		public RemoveResources (I18nAssemblies assemblies)
+		{
+			this.assemblies = assemblies;
+		}
+
+		public virtual void Process (LinkContext context)
+		{
+			AssemblyDefinition assembly;
+			if (!context.TryGetLinkedAssembly ("mscorlib", out assembly))
+				return;
+
+			// skip this if we're not linking mscorlib, e.g. --linkskip=mscorlib
+			if (context.Annotations.GetAction (assembly) != AssemblyAction.Link)
+				return;
+
+			var resources = assembly.MainModule.Resources;
+
+			for (int i = 0; i < resources.Count; i++) {
+				var resource = resources [i] as EmbeddedResource;
+				if (resource == null)
+					continue;
+
+				switch (resource.Name) {
+				case "collation.core.bin":
+				case "collation.tailoring.bin":
+					continue;
+				default:
+					if (!resource.Name.Contains ("cjk"))
+						continue;
+					if (IncludeCJK ())
+						continue;
+
+					resources.RemoveAt (i--);
+					break;
+				}
+			}
+		}
+
+		bool IncludeCJK ()
+		{
+			return (assemblies & I18nAssemblies.CJK) != 0;
+		}
+	}
+}