How to use Page slugs as breadcrumbs?

I′m trying to create a function that creates a breadcrumb trail of Page slugs, showing the path from “home” to the current (sub)page.

For example, on the page “example.com/attractions/parcs/parc-name” this breadcrumb would show up: Home > Attractions > Parcs > Parc Name

I already have a working function that shows a breadcrumb trail with page titles. I′m looking to replace the page title output with the page slugs.

Here′s the breadcrumb function:

[Code moderated as per the Forum Rules. Please use the pastebin]

Also, the following code snippets might help:

• Get the post slug outside of The Loop: global $post; echo $post->post_name;
• Get posts′parent slug <?php global $post; if($post->post_parent) { $post_data = get_post($post->post_parent); echo $post_data->post_name; } ?>

I′m really stuck here, so all help is welcome!!

(Note: I′ve posted this question on WP Stackexchange 6 hours ago, but haven′t received any replies. I′ll monitor both threads and if a solution is posted I′ll duplicate it inmeidately to the other thread.)