add function dirSlash()

Westdc/Helpers/Tools.php

@@ -62,7 +62,7 @@ class Tools {
     /**
      * @return string
      */
-    public function uuid()
+    static public function uuid()
     {
         return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
             // 32 bits for "time_low"
@@ -85,5 +85,18 @@ class Tools {
         );
     }
 
+    /**
+     * 给文件夹末尾加斜线
+     * @param $directory
+     * @return string
+     */
+    static function dirSlash($directory){
+        if(!preg_match("/(\\/|\\\)$/",$directory))
+        {
+            $directory.="/";
+        }
+
+        return $directory;
+    }
 	
 }