From f6e177a89832ba36409ac845eb72522e051bb0f3 Mon Sep 17 00:00:00 2001
From: Christian Weiske <cweiske@cweiske.de>
Date: Fri, 4 Jul 2014 18:25:01 +0200
Subject: config file setup instructions

---
 src/phorkie/Tools.php | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/phorkie/Tools.php')

diff --git a/src/phorkie/Tools.php b/src/phorkie/Tools.php
index 7c9c46e..7819cda 100644
--- a/src/phorkie/Tools.php
+++ b/src/phorkie/Tools.php
@@ -96,5 +96,17 @@ class Tools
 
         return '/';
     }
+
+    /**
+     * Resolves "/../" and "/./" in file paths without validating them.
+     */
+    public static function foldPath($path)
+    {
+        $path = str_replace('/./', '/', $path);
+        $path = str_replace('/./', '/', $path);
+        $path = preg_replace('#/[^/]+/\.\./#', '/', $path);
+        $path = preg_replace('#/[^/]+/\.\./#', '/', $path);
+        return $path;
+    }
 }
 ?>
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