42-Libft/ft_split.c at main · Tanathorn-Rin/42-Libft · GitHub

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#include "libft.h"

static int	ft_word_count(char const *s, char c)
{
	int	i;
	int	count;

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

static char	*ft_strndup(const char *s, int start, int len)
{
	char	*str;
	int		i;

	str = malloc(len + 1);
	i = 0;
	if (!str)
		return (NULL);
	while (i < len)
		str[i++] = s[start++];
	str[i] = '\0';
	return (str);
}

static char	**ft_split_fill(char const *s, char c, char **res, int words)
{
	int	i;
	int	j;
	int	start;

	i = 0;
	j = 0;
	start = 0;
	while (s[i] && j < words)
	{
		while (s[i] == c)
			i++;
		start = i;
		while (s[i] && s[i] != c)
			i++;
		if (i > start)
			res[j++] = ft_strndup(s, start, i - start);
	}
	res[j] = NULL;
	return (res);
}

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

	if (!s)
		return (NULL);
	words = ft_word_count(s, c);
	res = malloc((words + 1) * sizeof(char *));
	if (!res)
		return (NULL);
	return (ft_split_fill(s, c, res, words));
}