lst.c

#include "cub3d.h"

t_list	*ft_lstnew(void *content)
{
	t_list	*new_elem;

	new_elem = malloc(sizeof(t_list));
	if (!new_elem)
		return (NULL);
	new_elem->content = content;
	new_elem->next = NULL;
	return (new_elem);
}

int	ft_lstsize(t_list *lst)
{
	int	count;

	count = 0;
	while (lst)
	{
		lst = lst->next;
		count++;
	}
	return (count);
}

t_list	*ft_lstlast(t_list *lst)
{
	if (!lst)
		return (NULL);
	while (lst->next)
		lst = lst->next;
	return (lst);
}

void	ft_lstadd_back(t_list **alst, t_list *new)
{
	t_list	*last_elem;

	if (!*alst)
	{
		*alst = new;
		return ;
	}
	last_elem = ft_lstlast(*alst);
	last_elem->next = new;
}