From 65ae716469a08fb778e52884985532bd178c91bd Mon Sep 17 00:00:00 2001
From: morkt <muvluv.ru@gmail.com>
Date: Thu, 19 Nov 2015 11:35:02 +0400
Subject: [PATCH] (AutoEntry): don't return file type for ambiguously detected
 files.

---
 ArcFormats/ArcCommon.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ArcFormats/ArcCommon.cs b/ArcFormats/ArcCommon.cs
index 0fed2853..060ded7a 100644
--- a/ArcFormats/ArcCommon.cs
+++ b/ArcFormats/ArcCommon.cs
@@ -61,7 +61,10 @@ namespace GameRes.Formats
             return new AutoEntry (base_name, () => {
                 uint signature = file.View.ReadUInt32 (offset);
                 if (0 == signature) return null;
-                return FormatCatalog.Instance.LookupSignature (signature).FirstOrDefault();
+                var res = FormatCatalog.Instance.LookupSignature (signature);
+                if (!res.Any() || res.Skip (1).Any()) // Count == 0 || Count > 1
+                    return null;
+                return res.First();
             }) { Offset = offset };
         }