libft/srcs/ft_split.c at main · abdeleb/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_split.c                                         :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: marvin <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/05/19 22:24:31 by marvin            #+#    #+#             */
/*   Updated: 2022/05/19 22:27:21 by marvin           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static size_t ft_split_size(char const *str, char c)
{
	size_t i;
	size_t words;
	size_t chars;
	char prev;

	i = 0;
	prev = -1;
	chars = 0;
	words = 0;
	while (str[i])
	{
		if (str[i] != c)
			chars++;
		if (str[i] != c && (prev == c || prev == -1))
			words++;
		prev = str[i];
		i++;
	}
	if (words == 0 && chars > 0)
		words = 1;
	return (words);
}

static char *ft_strdup_split(char const *src, char c, size_t *i)
{
	char *dst;
	size_t len;
	size_t j;

	len = 0;
	while (src[*(i) + len] && src[*(i) + len] != c)
		len++;
	dst = (char *)malloc(sizeof(char) * (len + 1));
	if (dst == NULL)
		return (NULL);
	dst[len] = '\0';
	j = 0;
	while (j < len)
	{
		dst[j] = src[*(i)];
		j++;
		*(i) = *(i) + 1;
	}
	return (dst);
}

char **ft_split(char const *s, char c)
{
	char **rst;
	size_t deep;
	size_t i;
	size_t k;

	i = 0;
	k = 0;
	if (!s)
		return (NULL);
	deep = ft_split_size(s, c);
	rst = (char **)malloc(sizeof(char *) * (deep + 1));
	if (rst == NULL)
		return (NULL);
	while (k < deep)
	{
		while (s[i] && s[i] == c)
			i++;
		rst[k] = ft_strdup_split(s, c, &i);
		if (rst[k] == NULL)
			return (NULL);
		k++;
	}
	rst[deep] = NULL;
	return (rst);
}

/*int main()
{
	char a[] = "^^^1^^2a,^^^^3^^^^--h^^^^";
	char **ptr;

	ptr = ft_split(a, '^');

	printf("%s\n", ptr[0]);
	printf("%s\n", ptr[1]);
	printf("%s\n", ptr[2]);
	printf("%s\n", ptr[3]);
	printf("%s\n", ptr[4]);
	// jestem bogiem alfa
}*/