Highlighting current category using get_categories and postprocessing the result

Hello,

I would like to highlight the current category as if I were using wp_list_categories(); (which displays a “current-cat” class).

But I just can’t use wp_list_categories as I am changing the result given by get_categories thanks to its array form.

Here is the code :

<?php
                            $catID_Concours = get_cat_ID("concours");
                            $catID_Fini = get_cat_ID("fini");
                            $excludeCatID = $catID_Concours . ',' . $catID_Fini;
                            $args = array(
                                'exclude' => $excludeCatID, /* On retire la catégorie Concours du menu */
                                'title_li' => '0',
                                'hide_empty' => '1',
                            );
                            $categories = get_categories($args);

                            $menu = '';
                            foreach($categories as $category) {
                             $category_link = get_category_link( $category );
                                $menu .= '<li class="cat-item '. $category->slug .'"><a href="'. $category_link .'">'. $category->name .'</a></li>';
                            }
                            echo $menu;
                        ?>

So, is there a way to add a current category function to this code?

Séane