libft/ft_split.c at master · ikodo0/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_split.c                                         :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: dchernyk <dchernyk@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/04/21 17:16:11 by dchernyk          #+#    #+#             */
/*   Updated: 2026/04/27 13:15:58 by dchernyk         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static unsigned int	count_words(char const *s, char c)
{
	unsigned int	in_word;
	unsigned int	counter;

	counter = 0;
	in_word = 0;
	while (*s)
	{
		if (in_word == 0 && !(*s == c))
		{
			in_word = 1;
			counter++;
		}
		else if (in_word == 1 && *s == c)
			in_word = 0;
		s++;
	}
	return (counter);
}

static void	free_logic(char **outer, unsigned int j)
{
	while (j > 0)
	{
		j--;
		free(outer[j]);
	}
	free(outer);
}

static int	split_logic(char **outer, unsigned int words, char const *s, char c)
{
	unsigned int	i;
	unsigned int	j;
	unsigned int	start;
	unsigned int	len;
	char			*inner;

	i = 0;
	j = 0;
	while (j < words)
	{
		while (s[i] == c && s[i])
			i++;
		start = i;
		while (s[i] != c && s[i])
			i++;
		len = i - start;
		inner = malloc((len + 1) * sizeof(char));
		if (!inner)
			return (free_logic(outer, j), 0);
		ft_strlcpy(inner, &s[start], len + 1);
		outer[j++] = inner;
	}
	outer[j] = NULL;
	return (1);
}

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

	if (!s)
		return (NULL);
	words = count_words(s, c);
	outer = malloc((words + 1) * sizeof(char *));
	if (!outer)
		return (NULL);
	if (split_logic(outer, words, s, c) == 0)
		return (NULL);
	return (outer);
}

/*#include <stdio.h>

int main(void)
{
	char	test[] = "   Adfd dsfdsfs   rtert  ";
	char	**result = ft_split(test, ' ');
	int		i;

	if (!result)
		return (1);
	i = 0;
	while (result[i])
	{
		printf("%s\n", result[i]);
		i++;
	}
}*/