Current URL path variable

I am using a page template to display a folders contents depending on which page someone is on. Right now this method is working for top level paths, but not for anything nested. I understand why it isn’t working, but I am not sure how to fix it. Here is an example of what I am doing now:

$dir = "wp-content/uploads/Docs/".$pagename;

So that will give me the correct path to the top level pages, but anything below them will not work. I know the easy solution would just to keep all folders at the base level in the upload directory, but I want my server side files to make sense also. How a url using $pagename looks now:

http://example.com/accounting

But lets say that I have a page within /accounting like this:

http://example.com/accounting/accounts-receivable

Using the $pagename method will only provide me with this:

http://example.com/accounts-receivable

My preferred solution would be to use something like $pagename and get the full path.