cub3D/ft_utils_split.c

#include "cub3d.h"

static size_t	words_count(char *s, char c)
{
	size_t	i;
	size_t	j;

	i = 0;
	j = 0;
	while (*s)
	{
		if (*s != c)
			i++;
		else if (*s == c && i != 0)
		{
			j++;
			i = 0;
		}
		s++;
	}
	if (i != 0)
		j++;
	return (j);
}

static char	*word(char *s, char c)
{
	char	*buf;

	while (*s == c)
		s++;
	buf = s;
	while (*buf && *buf != c)
		buf++;
	*buf = '\0';
	return (ft_strdup(s));
}

static char	**free_arr(char **arr, char *s)
{
	size_t	i;

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

static char	**worker(char **arr, char *s1, char c, size_t j)
{
	size_t	i;
	char	*str;

	str = s1;
	i = 0;
	while (i < j)
	{
		if (*s1 != c)
		{
			arr[i] = word(s1, c);
			if (!arr[i])
				return (free_arr(arr, s1));
			s1 = s1 + ft_strlen(arr[i]);
			i++;
		}
		s1++;
	}
	arr[i] = NULL;
	free(str);
	return (arr);
}

char	**ft_split(char const *s, char c)
{
	char	**w_arr;
	char	*s1;
	size_t	j;

	s1 = ft_strdup(s);
	if (!s1)
		return (NULL);
	j = words_count(s1, c);
	w_arr = (char **)malloc(sizeof(char *) * (j + 1));
	if (!w_arr)
		return (NULL);
	return (worker(w_arr, s1, c, j));
}