minishell/src/parser/wordlist/wordlist_utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   wordlist_utils.c                                   :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jguelen <jguelen@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/03/10 09:51:34 by jguelen           #+#    #+#             */
/*   Updated: 2025/03/19 13:43:24 by jguelen          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

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

/*
** Returns the number of words present in the wordlist given as parameter.
** NOTE: Assumes list not to be circular.
*/
int	wordlist_size(t_wordlist *wordlist)
{
	int		size;

	size = 0;
	while (wordlist)
	{
		size++;
		wordlist = wordlist->next;
	}
	return (size);
}

t_wordlist	*wordlist_last(t_wordlist *list)
{
	if (!list)
		return (NULL);
	while (list->next)
		list = list->next;
	return (list);
}

/*
** Returns the node at index idx in list or NULL if idx is out
** of bounds.
*/
t_wordlist	*wordlist_get_elem(t_wordlist *list, int idx)
{
	if (list == NULL || idx < 0)
		return (NULL);
	while (idx > 0 && list != NULL)
	{
		list = list->next;
		idx--;
	}
	if (list == NULL)
		return (NULL);
	return (list);
}