#1225: Fix inconsistencies in path handling when decompiling resources.

Also, move the .resources->.resx conversion into the base class.
Now that we have our own ResXWriter implementation, there's no longer any reason to keep this specific to ILSpy.

ICSharpCode.Decompiler/CSharp/WholeProjectDecompiler.cs

@@ -373,7 +373,7 @@ namespace ICSharpCode.Decompiler.CSharp
 								Stream entryStream = (Stream)value;
 								entryStream.Position = 0;
 								individualResources.AddRange(
-									WriteResourceToFile(Path.Combine(targetDirectory, fileName), (string)name, entryStream));
+									WriteResourceToFile(fileName, (string)name, entryStream));
 							}
 							decodedIntoIndividualFiles = true;
 						} else {
@@ -388,7 +388,7 @@ namespace ICSharpCode.Decompiler.CSharp
 						}
 					} else {
 						stream.Position = 0;
-						string fileName = Path.ChangeExtension(GetFileNameForResource(r.Name), ".resource");
+						string fileName = GetFileNameForResource(r.Name);
 						foreach (var entry in WriteResourceToFile(fileName, r.Name, stream)) {
 							yield return entry;
 						}
@@ -406,10 +406,24 @@ namespace ICSharpCode.Decompiler.CSharp
 
 		protected virtual IEnumerable<Tuple<string, string>> WriteResourceToFile(string fileName, string resourceName, Stream entryStream)
 		{
-			using (FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.Write)) {
+			if (fileName.EndsWith(".resources", StringComparison.OrdinalIgnoreCase)) {
+				string resx = Path.ChangeExtension(fileName, ".resx");
+				try {
+					using (FileStream fs = new FileStream(Path.Combine(targetDirectory, resx), FileMode.Create, FileAccess.Write))
+					using (ResXResourceWriter writer = new ResXResourceWriter(fs)) {
+						foreach (var entry in new ResourcesFile(entryStream)) {
+							writer.AddResource(entry.Key, entry.Value);
+						}
+					}
+					return new[] { Tuple.Create("EmbeddedResource", resx) };
+				} catch (BadImageFormatException) {
+					// if the .resources can't be decoded, just save them as-is
+				}
+			} 
+			using (FileStream fs = new FileStream(Path.Combine(targetDirectory, fileName), FileMode.Create, FileAccess.Write)) {
 				entryStream.CopyTo(fs);
 			}
-			yield return Tuple.Create("EmbeddedResource", fileName);
+			return new[] { Tuple.Create("EmbeddedResource", fileName) };
 		}
 
 		string GetFileNameForResource(string fullName)

ICSharpCode.Decompiler/Util/ResXResourceWriter.cs

@@ -466,11 +466,11 @@ namespace ICSharpCode.Decompiler.Util
 
 		public void Close()
 		{
+			if (writer != null) {
 				if (!written) {
 					Generate();
 				}
 
-			if (writer != null) {
 				writer.Close();
 				stream = null;
 				filename = null;

ILSpy/Languages/CSharpLanguage.cs

@@ -392,20 +392,12 @@ namespace ICSharpCode.ILSpy
 
 			protected override IEnumerable<Tuple<string, string>> WriteResourceToFile(string fileName, string resourceName, Stream entryStream)
 			{
-				if (fileName.EndsWith(".resource", StringComparison.OrdinalIgnoreCase)) {
-					fileName = Path.ChangeExtension(fileName, ".resx");
-					using (FileStream fs = new FileStream(Path.Combine(targetDirectory, fileName), FileMode.Create, FileAccess.Write))
-					using (ResXResourceWriter writer = new ResXResourceWriter(fs)) {
-						foreach (var entry in new ResourcesFile(entryStream)) {
-							writer.AddResource(entry.Key, entry.Value);
-						}
-					}
-					return new[] { Tuple.Create("EmbeddedResource", fileName) };
-				}
 				foreach (var handler in App.ExportProvider.GetExportedValues<IResourceFileHandler>()) {
 					if (handler.CanHandle(fileName, options)) {
 						entryStream.Position = 0;
-						return new[] { Tuple.Create(handler.EntryType, handler.WriteResourceToFile(assembly, fileName, entryStream, options)) };
+						fileName = Path.Combine(targetDirectory, fileName);
+						fileName = handler.WriteResourceToFile(assembly, fileName, entryStream, options);
+						return new[] { Tuple.Create(handler.EntryType, fileName) };
 					}
 				}
 				return base.WriteResourceToFile(fileName, resourceName, entryStream);