From 6f94e51ba6b5f120422a097af74572843e23139b Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Sun, 31 Mar 2019 21:39:19 -0400
Subject: [PATCH] Add Strings::sanitizeFilePathItem method

---
 src/Util/Strings.php | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/Util/Strings.php b/src/Util/Strings.php
index d6583b9c61..b2b710d96f 100644
--- a/src/Util/Strings.php
+++ b/src/Util/Strings.php
@@ -375,4 +375,20 @@ class Strings
   )*
 )@';
 	}
+
+	/**
+	 * Ensures a single path item doesn't contain any path-traversing characters
+	 *
+	 * @see https://stackoverflow.com/a/46097713
+	 * @param string $pathItem
+	 * @return string
+	 */
+	public static function sanitizeFilePathItem($pathItem)
+	{
+		$pathItem = str_replace('/', '_', $pathItem);
+		$pathItem = str_replace('\\', '_', $pathItem);
+		$pathItem = str_replace(DIRECTORY_SEPARATOR, '_', $pathItem); // In case it does not equal the standard values
+
+		return $pathItem;
+	}
 }