1 files changed, 91 insertions, 0 deletions
diff --git a/libft/ft_split.c b/libft/ft_split.c
new file mode 100644
index 0000000..bce2f72
--- /dev/null
+++ b/libft/ft_split.c
@@ -0,0 +1,91 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_split.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: kdx    <kdx   @student.42angouleme.fr      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2022/09/28 16:55:02 by kdx               #+#    #+#             */
+/*   Updated: 2022/10/13 22:34:28 by kdx              ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+#include <stdbool.h>
+
+static void	*free_array(char **a)
+{
+	size_t	i;
+
+	if (a != NULL)
+	{
+		i = 0;
+		while (a[i] != NULL)
+		{
+			free(a[i]);
+			i += 1;
+		}
+		free(a);
+	}
+	return (NULL);
+}
+
+static size_t	skip_char(const char **s, char c, bool invert)
+{
+	size_t		i;
+	const char	*p;
+
+	i = 0;
+	p = *s;
+	while (((!invert && *p == c) || (invert && *p != c)) && *p != '\0')
+	{
+		p += 1;
+		i += 1;
+	}
+	*s = p;
+	return (i);
+}
+
+static size_t	count_elems(const char *s, char c)
+{
+	size_t	n_elem;
+
+	n_elem = 0;
+	skip_char(&s, c, false);
+	while (*s != '\0')
+	{
+		skip_char(&s, c, true);
+		skip_char(&s, c, false);
+		n_elem += 1;
+	}
+	return (n_elem);
+}
+
+char	**ft_split(char const *s, char c)
+{
+	char		**array;
+	size_t		n_elem;
+	size_t		arr_i;
+	const char	*rem_s;
+	size_t		len;
+
+	if (s == NULL)
+		return (NULL);
+	n_elem = count_elems(s, c);
+	array = ft_calloc(n_elem + 1, sizeof(char *));
+	if (array == NULL)
+		return (array);
+	skip_char(&s, c, false);
+	arr_i = 0;
+	while (arr_i < n_elem)
+	{
+		rem_s = s;
+		len = skip_char(&s, c, true);
+		array[arr_i] = ft_substr(rem_s, 0, len);
+		if (array[arr_i] == NULL)
+			return (free_array(array));
+		arr_i += 1;
+		skip_char(&s, c, false);
+	}
+	return (array);
+}