ft_lstmap.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_lstmap.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kfujita <kfujita@student.42tokyo.jp>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/04/20 00:46:36 by kfujita           #+#    #+#             */
/*   Updated: 2022/04/25 22:57:46 by kfujita          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include <stddef.h>
#include "ft_lst.h"
 
t_list  *ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *))
{
    t_list  *p_new_lst_top;
    t_list  *p_new_lst;
 
    if (lst == NULL)
        return (NULL);
    p_new_lst_top = ft_lstnew(f(lst->content));
    if (p_new_lst_top == NULL)
        return (NULL);
    p_new_lst = p_new_lst_top;
    lst = lst->next;
    while (lst != NULL)
    {
        p_new_lst->next = ft_lstnew(f(lst->content));
        p_new_lst = p_new_lst->next;
        lst = lst->next;
        if (p_new_lst == NULL)
        {
            ft_lstclear(&p_new_lst_top, del);
            return (NULL);
        }
    }
    return (p_new_lst_top);
}