pipeline: parse basic pipeline commands with two commands

src/parser/wordlist/wordlist.c

@@ -6,7 +6,7 @@
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/02/13 17:07:01 by khais             #+#    #+#             */
-/*   Updated: 2025/02/14 16:47:04 by khais            ###   ########.fr       */
+/*   Updated: 2025/02/21 14:04:50 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -91,3 +91,22 @@ t_wordlist	*wordlist_push(t_wordlist *wordlist, t_worddesc *worddesc)
 		return (wordlist_destroy(start), NULL);
 	return (start);
 }
+
+/*
+** remove and return the first element in the given wordlist
+**
+** If wordlist is empty, return null.
+*/
+t_worddesc	*wordlist_pop(t_wordlist **wordlist)
+{
+	t_wordlist	*first;
+	t_worddesc	*word;
+
+	if ((*wordlist) == NULL)
+		return (NULL);
+	first = *wordlist;
+	(*wordlist) = first->next;
+	word = first->word;
+	free(first);
+	return (word);
+}