From bf2eb381ba775312e2ae0e7175c5000e1af9a651 Mon Sep 17 00:00:00 2001
From: Sorgelig <pour.garbage@gmail.com>
Date: Fri, 27 Oct 2023 05:13:26 +0800
Subject: [PATCH] file_io: fix for single-file zip.

---
 file_io.cpp | 17 +++--------------
 1 file changed, 3 insertions(+), 14 deletions(-)

diff --git a/file_io.cpp b/file_io.cpp
index 2c1664a..dbc2c18 100644
--- a/file_io.cpp
+++ b/file_io.cpp
@@ -1274,20 +1274,9 @@ static const char *GetRelativeFileName(const char *folder, const char *path)
 
 static bool IsInSameFolder(const char *folder, const char *path)
 {
-	if (strcasestr(path, folder) == path)
-	{
-		const char *subpath = path + strlen(folder);
-		if (*subpath == '/')
-		{
-			subpath++;
-			if (*subpath != '\0')
-			{
-				const char *slash = strchr(subpath, '/');
-				return !slash || *(slash + 1) == '\0';
-			}
-		}
-	}
-	return false;
+	const char *p = strrchr(path, '/');
+	size_t len = p ? p - path : 0;
+	return (strlen(folder) == len) && !strncasecmp(path, folder, len);
 }
 
 static int names_loaded = 0;