push_swap/ft_split.c at main · 0obito/push_swap · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_split.c                                         :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: aelmsafe <aelmsafe@student.1337.ma>        +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/11/09 05:40:31 by aelmsafe          #+#    #+#             */
/*   Updated: 2024/11/17 16:22:10 by aelmsafe         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "push_swap.h"

static	size_t	word_count(char const *s, char c)
{
	size_t	i;
	size_t	wc;

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

static	char	*word_fill(char const *s, size_t i, size_t len)
{
	char	*word;

	word = malloc(sizeof(char) * (len + 1));
	if (word == NULL)
		return (NULL);
	ft_strlcpy(word, &s[i - len], len + 1);
	return (word);
}

static	char	**free_all(char **sp, size_t idx)
{
	size_t	i;

	i = 0;
	while (i <= idx)
	{
		free(sp[i]);
		i++;
	}
	free(sp);
	return (NULL);
}

static	char	**alloc_fill(char const *s, char c, size_t wc, size_t *idx)
{
	char	**sp;
	size_t	i;
	size_t	wlen;

	sp = malloc(sizeof(char *) * (wc + 1));
	if (sp == NULL)
		return (NULL);
	i = 0;
	*idx = 0;
	while (s[i])
	{
		while (s[i] == c)
			i++;
		if (!s[i])
			break ;
		wlen = 0;
		while (s[i + wlen] && s[i + wlen] != c)
			wlen++;
		i += wlen;
		sp[*idx] = word_fill(s, i, wlen);
		if (!sp[*idx])
			return (free_all(sp, *idx));
		(*idx) = (*idx) + 1;
	}
	return (sp);
}

char	**ft_split(char const *s, char c)
{
	char	**res;
	size_t	wc;
	size_t	idx;

	if (!s)
		return (NULL);
	wc = word_count(s, c);
	res = alloc_fill(s, c, wc, &idx);
	if (res)
		res[idx] = NULL;
	return (res);
}