diff --git a/libft/Makefile b/libft/Makefile
index 7ed8926..cd89cbd 100644
--- a/libft/Makefile
+++ b/libft/Makefile
@@ -6,7 +6,7 @@
 #    By: mmoussou <mmoussou@student.42angouleme.fr  +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2024/01/22 07:21:18 by mmoussou          #+#    #+#              #
-#    Updated: 2024/05/13 17:33:16 by adjoly           ###   ########.fr        #
+#    Updated: 2024/05/25 14:22:48 by adjoly           ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
@@ -28,6 +28,7 @@ SRCS = 		 src/io/ft_putnbr_fd.c \
 			 src/io/ft_printf.c \
 			 src/io/ft_printf_fd.c \
 			 src/io/ft_putchar_fd.c \
+			 src/io/get_next_line/get_next_line.c \
 			 \
 			 src/int/ft_min.c \
 			 src/int/ft_max.c \
diff --git a/libft/include/libft.h b/libft/include/libft.h
index e995e4a..248bea1 100644
--- a/libft/include/libft.h
+++ b/libft/include/libft.h
@@ -6,7 +6,7 @@
 /*   By: mmoussou <mmoussou@student.42angouleme.fr  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/10/30 23:06:24 by mmoussou          #+#    #+#             */
-/*   Updated: 2024/04/30 11:03:55 by mmoussou         ###   ########.fr       */
+/*   Updated: 2024/05/25 14:24:29 by adjoly           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -126,4 +126,11 @@ t_stack		*ft_stacklast(t_stack *stack);
 void		ft_stackadd_back(t_stack **stack, t_stack *new);
 void		ft_stackadd_front(t_stack **stack, t_stack *new);
 
+/* ----- GET_NEXT_LINE ------ */
+# ifndef BUFFER_SIZE
+#  define BUFFER_SIZE 5
+# endif
+
+char		*get_next_line(int fd);
+
 #endif
diff --git a/libft/src/io/get_next_line/get_next_line.c b/libft/src/io/get_next_line/get_next_line.c
new file mode 100644
index 0000000..a3b3ab0
--- /dev/null
+++ b/libft/src/io/get_next_line/get_next_line.c
@@ -0,0 +1,74 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42angouleme.fr>     +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/12/01 17:11:59 by adjoly            #+#    #+#             */
+/*   Updated: 2024/05/25 14:23:08 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	check_line(char *res, char *buf)
+{
+	int	i;
+	int	j;
+
+	i = 0;
+	j = 0;
+	while (res[i] && res[i] != '\n')
+		i++;
+	if (res[i] == '\n')
+	{
+		i++;
+		while (res[i])
+		{
+			buf[j] = res[i];
+			i++;
+			j++;
+		}
+		buf[j] = 0;
+		res[i - j] = 0;
+		return (1);
+	}
+	return (0);
+}
+
+char	*ft_read_error(char **buf, char *res)
+{
+	free(*buf);
+	*buf = NULL;
+	if (res[0] != 0)
+		return (res);
+	free(res);
+	return (NULL);
+}
+
+char	*get_next_line(int fd)
+{
+	static char	*buf;
+	char		*res;
+	ssize_t		bytes_read;
+
+	if (BUFFER_SIZE <= 0 || fd < 0 || fd > 1023)
+		return (NULL);
+	if (!buf)
+		buf = ft_calloc(sizeof(char), BUFFER_SIZE + 1);
+	res = ft_calloc(1, 1);
+	while (buf)
+	{
+		res = ft_strjoin_free_s1(res, buf);
+		if (!res)
+			return (NULL);
+		if (check_line(res, buf))
+			return (res);
+		bytes_read = read(fd, buf, BUFFER_SIZE);
+		if (bytes_read < 1)
+			return (ft_read_error(&buf, res));
+		buf[bytes_read] = 0;
+	}
+	return (NULL);
+}