/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_split.c                                         :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: whaffman <whaffman@student.codam.nl>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/06/18 10:44:32 by whaffman          #+#    #+#             */
/*   Updated: 2024/06/19 14:46:27 by whaffman         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

/*
...Halooo dit is een zin, met woorden erin.
^  ^     ^
f->f---->b
         ^^  ^ 
         ff->b
*/

#define WORD 1
#define SEP 0
#include <stdio.h>
#include <stdlib.h>

char	**ft_split(char *str, char *charset);
char	*ptr_skip(int word, char *str, char *sep);
int		count_words(char *str, char *sep);
int		is_sep(char c, char *sep);

int	is_sep(char c, char *sep)
{
	while (*sep)
	{
		if (c == *sep)
			return (1);
		sep++;
	}
	return (0);
}

int	count_words(char *str, char *sep)
{
	int	i;
	int	count;

	i = 0;
	count = 0;
	str = ptr_skip(SEP, str, sep);
	while (str[i])
	{
		if (!is_sep(str[i], sep) \
			&& (is_sep(str[i + 1], sep) \
			|| str[i + 1] == '\0'))
			count++;
		i++;
	}
	return (count);
}

char	*ptr_skip(int word, char *str, char *sep)
{
	while (*str && word ^ is_sep(*str, sep))
		str++;
	return (str);
}

unsigned int	ft_strlcpy(char *dest, char *src, unsigned int n)
{
	unsigned int	i;

	i = 0;
	while (src[i] && i + 1 < n)
	{
		dest[i] = src[i];
		i++;
	}
	dest[i] = '\0';
	return (i);
}

char	**ft_split(char *str, char *charset)
{
	int		n_words;
	char	**result;
	char	*end;
	char	*word;
	int		i;

	str = ptr_skip(SEP, str, charset);
	n_words = count_words(str, charset);
	result = (char **) malloc((n_words + 1) * sizeof(char *));
	i = 0;
	result[0] = 0;
	if (!*str)
		return (result);
	while (i < n_words)
	{
		end = ptr_skip(WORD, str, charset);
		word = (char *) malloc((end - str + 1) * sizeof(char));
		ft_strlcpy(word, str, (end - str + 1));
		word[end - str] = '\0';
		result[i] = word;
		str = ptr_skip(SEP, end, charset);
		i++;
	}
	result[i] = 0;
	return (result);
}
/*
#ifdef DEBUG

int	main(void)
{
	char	**segments;
	segments = ft_split("", "");
	while (*segments)
	{
		printf("%s\n", *segments);
		segments++;
	}
	printf("%p",*segments);
}

#endif
*/