/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_lstmap.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tosuman <timo42@proton.me>                 +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/06/24 17:10:04 by tosuman           #+#    #+#             */
/*   Updated: 2023/06/30 00:57:49 by tischmid         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"
#include <stdlib.h>

t_list	*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *))
{
	t_list	*new_lst;
	t_list	*new_elem;

	if (!lst || !f)
		return (0);
	new_lst = (void *)0;
	while (lst)
	{
		new_elem = ft_lstnew(f(lst->content)); // maybe check for NULL
		if (!new_elem)
		{
			while (new_lst)
			{
				new_elem = new_lst->next;
				del(new_lst->content);
				free(new_lst);
				new_lst = new_elem;
			}
			return (0);
		}
		ft_lstadd_back(&new_lst, new_elem);
		lst = lst->next;
	}
	return (new_lst);
}