diff --git a/get_next_line.c b/get_next_line.c
new file mode 100644
index 0000000..30452f3
--- /dev/null
+++ b/get_next_line.c
@@ -0,0 +1,145 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: apommier <alexpomms@student.42.fr>         +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/12/14 02:40:53 by apommier          #+#    #+#             */
+/*   Updated: 2020/12/14 21:13:09 by apommier         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+int			ft_strlen(char *s1)
+{
+	int i;
+	i = 0;
+	while (s1[i])
+		i++;
+	return (i);
+}
+
+char		*ft_strjoin(char *s1, char *s2)
+{
+	char	*dest;
+	int		i;
+	int		j;
+
+	i = 0;
+	j = 0;
+	dest = (char*)malloc(sizeof(char) * (ft_strlen(s1) + ft_strlen(s2) + 1));
+	if (dest == 0)
+		return (0);
+	while (s1[i])
+	{
+		dest[j] = s1[i];
+		j++;
+		i++;
+	}
+	i = 0;
+	while (s2[i])
+	{
+		dest[j] = s2[i];
+		j++;
+		i++;
+	}
+	dest[j] = 0;
+	return (dest);
+}
+
+int			ft_free(char **s1; char **s2; char **s3)
+{
+	if (*s1)
+		free(*s1);
+	if (*s2)
+		free(*s2);
+	if (*s3)
+		free(*s3);
+	return (0);
+}
+
+static char	*up_save(char *save, int index, int fd)
+{
+	char		*dest;
+	char		*delete;
+	int			i;
+
+	delete = save;
+	if (index)
+		save += index;
+	if (!(dest = (char*)malloc(BUFFER_SIZE)))
+	{
+		ft_free(dest, delete, save);
+		return (0);
+	}
+	i = read(fd, dest, BUFFER_SIZE);
+	if (!i)
+	{
+		ft_free(dest, delete, save);
+		return (0);
+	}
+	if (!(save = ft_strjoin(save, dest)))
+	{
+		ft_free(dest, delete, save);
+		return (0);
+	}
+	free(delete);
+	return (save);
+}
+
+int			is_line(char *save, char **line)
+{
+	int			i;
+
+	i = 0;
+	if (save == 0)
+		return (0);
+	while (save[i] && i < BUFFER_SIZE)
+	{
+		if (save[i] == '\n')
+		{
+			save[i] = 0;
+			return (1);
+		}
+		i++;
+	}
+	if (save[i] == 0)
+	{
+		return (2);
+		*line = save;
+	}
+	return (0);
+}
+
+int			get_next_line(int fd, char **line)
+{
+	static char	*save;
+	int			i;
+
+	if (fd < 0 || !line || !BUFFER_SIZE)
+		return (-1);
+	if (is_line(save, line))
+	{
+		while (save[i] != 0)
+			i++;
+		if (!(save = up_save(save, i, fd)))
+			return (-1);
+	}
+	else
+	{
+		if (!(save = up_save(save, 0, fd)))
+			return (-1);
+	}
+	while (!is_line(save, line))
+	{
+		if (is_line(save, line) == 2)
+			return (0);
+		if (!(save = up_save(save, 0, fd)))
+			return (-1);
+	}
+	*line = save;
+	return (1);
+}
diff --git a/get_next_line_utils.c b/get_next_line_utils.c
new file mode 100644
index 0000000..614bc84
--- /dev/null
+++ b/get_next_line_utils.c
@@ -0,0 +1,41 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line_utils.c                              :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: apommier <alexpomms@student.42.fr>         +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/12/14 06:05:54 by apommier          #+#    #+#             */
+/*   Updated: 2020/12/14 06:06:31 by apommier         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "get_next_line.h"
+
+char	*ft_strjoin(char const *s1, char const *s2)
+{
+	char	*dest;
+	int		i;
+	int		j;
+
+	i = 0;
+	j = 0;
+	dest = (char*)malloc(sizeof(char) * (ft_strlen(s1) + ft_strlen(s2) + 1));
+	if (dest == 0)
+		return (0);
+	while (s1[i])
+	{
+		dest[j] = s1[i];
+		j++;
+		i++;
+	}
+	i = 0;
+	while (s2[i])
+	{
+		dest[j] = s2[i];
+		j++;
+		i++;
+	}
+	dest[j] = 0;
+	return (dest);
+}