libft/ft_split.c at main · refernandes/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_split.c                                         :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: refernan <refernan@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/06/04 08:37:34 by refernan          #+#    #+#             */
/*   Updated: 2026/06/04 08:43:30 by refernan         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static int	count_words(char const *s, char c)
{
	int	count;
	int	i;

	count = 0;
	i = 0;
	while (s[i])
	{
		while (s[i] && s[i] == c)
			i++;
		if (s[i])
			count++;
		while (s[i] && s[i] != c)
			i++;
	}
	return (count);
}

static char	**free_all(char **res)
{
	int	i;

	i = 0;
	while (res[i])
	{
		free(res[i]);
		i++;
	}
	free(res);
	return (NULL);
}

static char	**fill_split(char const *s, char c, char **res, int words)
{
	size_t	i;
	int		j;
	size_t	start;

	i = 0;
	j = 0;
	while (j < words)
	{
		while (s[i] && s[i] == c)
			i++;
		start = i;
		while (s[i] && s[i] != c)
			i++;
		res[j] = ft_substr(s, start, i - start);
		if (!res[j])
			return (free_all(res));
		j++;
	}
	return (res);
}

char	**ft_split(char const *s, char c)
{
	char	**res;
	int		words;

	if (s == NULL)
		return (NULL);
	words = count_words(s, c);
	res = ft_calloc(words + 1, sizeof(char *));
	if (res == NULL)
		return (NULL);
	return (fill_split(s, c, res, words));
}