Fix resource import interrupted when item not valid.

Assets/Cryville/Crtr/Browsing/LegacyResourceManager.cs

@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using UnityEngine;
+using Logger = Cryville.Common.Logger;
 
 namespace Cryville.Crtr.Browsing {
 	internal class LegacyResourceManager : IResourceManager<ChartDetail> {
@@ -117,7 +118,10 @@ namespace Cryville.Crtr.Browsing {
 			foreach (var converter in converters[file.Extension]) {
 				var resources = converter.ConvertFrom(file);
 				foreach (var res in resources) {
-					if (res is ChartResource) {
+					if (!res.Valid) {
+						Logger.Log("main", 3, "Resource", "Attempt to import invalid resource {0}", res);
+					}
+					else if (res is ChartResource) {
 						var tres = (ChartResource)res;
 						var dir = new DirectoryInfo(_rootPath + "/charts/" + res.Name);
 						if (!dir.Exists) dir.Create();
@@ -134,6 +138,7 @@ namespace Cryville.Crtr.Browsing {
 						if (!dir.Exists) dir.Create();
 						var dest = new FileInfo(_rootPath + "/charts/" + res.Name + "/cover" + tres.Source.Extension);
 						if (!dest.Exists) tres.Source.CopyTo(dest.FullName);
+
 					}
 					else if (res is SongResource) {
 						var tres = (SongResource)res;

Assets/Cryville/Crtr/Browsing/ResourceConverter.cs

@@ -12,6 +12,10 @@ namespace Cryville.Crtr.Browsing {
 			Name = StringUtils.EscapeFileName(name);
 		}
 		public string Name { get; private set; }
+		public abstract bool Valid { get; }
+		public override string ToString() {
+			return string.Format("{0} ({1})", Name, ReflectionHelper.GetSimpleName(GetType()));
+		}
 	}
 	public class ChartResource : Resource {
 		public ChartResource(string name, Chart main, ChartMeta meta) : base(name) {
@@ -19,17 +23,20 @@ namespace Cryville.Crtr.Browsing {
 		}
 		public Chart Main { get; private set; }
 		public ChartMeta Meta { get; private set; }
+		public override bool Valid { get { return true; } }
 	}
 	public class CoverResource : Resource {
 		public CoverResource(string name, FileInfo src) : base(name) {
 			Source = src;
 		}
 		public FileInfo Source { get; private set; }
+		public override bool Valid { get { return Source.Exists; } }
 	}
 	public class SongResource : Resource {
 		public SongResource(string name, FileInfo src) : base(name) {
 			Source = src;
 		}
 		public FileInfo Source { get; private set; }
+		public override bool Valid { get { return Source.Exists; } }
 	}
 }