segfault go jump off a bridge

Makefile

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+# **************************************************************************** #
+#                                                                              #
+#                                                         :::      ::::::::    #
+#    Makefile                                           :+:      :+:    :+:    #
+#                                                     +:+ +:+         +:+      #
+#    By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+         #
+#                                                 +#+#+#+#+#+   +#+            #
+#    Created: 2023/12/01 17:10:39 by adjoly            #+#    #+#              #
+#    Updated: 2023/12/01 17:20:36 by adjoly           ###   ########.fr        #
+#                                                                              #
+# **************************************************************************** #
+
+NAME =  get_next_line.a
+
+CC = cc
+
+SRCS = get_next_line.c \
+		get_next_line_utils.c \
+
+OBJS = $(SRCS:.c=.o)
+
+FLAGS = -Werror -Wall -Wextra
+
+HEADER = get_next_line.h \
+
+$(NAME): $(OBJS)
+	ar -rcs $(NAME) $(OBJS)
+
+%.o: %.cc
+	$(CC) $(FLAGS) $(HEADER) $< -c -o $@
+
+all: $(NAME)
+
+clean:
+	rm -f $(OBJS)
+
+fclean: clean
+	rm -f $(NAME)
+
+re: fclean all
+
+.PHONY: clean all re fclean

get_next_line.c

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+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/12/01 17:11:59 by adjoly            #+#    #+#             */
+/*   Updated: 2023/12/01 23:03:24 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "get_next_line.h"
+
+int	check_line(char	*buf)
+{
+	int	i;
+
+	i = 0;
+	while (buf[i] || buf[i] != '\n')
+		i++;
+	if (buf[i] == '\n')
+		return (1);
+	return (0);
+}
+
+void	read_line(int fd, char *buf)
+{
+	char	*tmp;
+	size_t	read_nb;
+
+	while (!check_line(buf) && read_nb != 0)
+	{
+		tmp = malloc((BUFFER_SIZE + 1) * sizeof(char));
+		if (!tmp)
+		{
+			buf = NULL;
+			return ;
+		}
+		read_nb = read(fd, tmp, BUFFER_SIZE);
+		buf = ft_strjoin(buf, tmp);
+		free(tmp);
+	}
+}
+
+char	*line_to_str(char *buf)
+{
+	char	*res;
+	size_t	i;
+	size_t	size_buf;
+
+	i = 0;
+	size_buf = ft_strlen_til_nl(buf);
+	res = malloc((size_buf + 1) * sizeof(char));
+	while (i < size_buf)
+	{
+		res[i] = buf[i];
+		if (buf[i] == '\n')
+			break ;
+		i++;
+	}
+	free (buf);
+	return (res);
+}
+
+char	*get_next_line(int fd)
+{
+	static char	*buf;
+	char		*res;
+
+	if (BUFFER_SIZE <= 0 || read(fd, &res, 0) < 0 || fd < 0)
+		return (NULL);
+	read_line(fd, buf);
+	res = line_to_str(buf);
+	return (res);
+}
+
+#include <unistd.h>
+void	ft_putstr(char	*str){if (str == NULL){return ;}int i = 0;while(str[i]){write(1, &str[i], 1);i++;}}
+#include <fcntl.h>
+int	main(void)
+{
+	char	*ln;
+	int		fd;
+
+	fd = open("test.txt", O_RDONLY);
+	while (1)
+	{
+		ln = get_next_line(fd);
+		if (ln == NULL)
+			break ;
+		ft_putstr(ln);
+		free(ln);
+	}
+}

get_next_line.h

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+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line.h                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/12/01 17:12:00 by adjoly            #+#    #+#             */
+/*   Updated: 2023/12/01 22:31:30 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef GET_NEXT_LINE_H
+# define GET_NEXT_LINE_H
+
+# include <unistd.h>
+# include <stdlib.h>
+
+# ifndef BUFFER_SIZE
+#  define BUFFER_SIZE 5
+# endif
+
+char	*get_next_line(int fd);
+char	*ft_strjoin(char *s1, char *s2);
+size_t	ft_strlen_til_nl(char *s);
+size_t	ft_strlen(char *s);
+
+#endif

get_next_line_utils.c

@@ -0,0 +1,61 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line_utils.c                              :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: adjoly <adjoly@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/12/01 17:12:02 by adjoly            #+#    #+#             */
+/*   Updated: 2023/12/01 22:31:36 by adjoly           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "get_next_line.h"
+
+size_t	ft_strlen(char *s)
+{
+	size_t	i;
+
+	i = 0;
+	while (s[i])
+		i++;
+	return (i);
+}
+
+size_t	ft_strlen_til_nl(char *s)
+{
+	size_t	i;
+
+	i = 0;
+	while (s[i] && s[i] != '\n')
+		i++;
+	return (i);
+}
+
+char	*ft_strjoin(char *s1, char *s2)
+{
+	char	*result;
+	size_t	i;
+	size_t	j;
+
+	i = 0;
+	j = 0;
+	if (s1 == NULL && s2 == NULL)
+		return (NULL);
+	result = malloc((ft_strlen(s1) + ft_strlen(s2) + 1) * sizeof(char));
+	if (result == NULL)
+		return (NULL);
+	while (s1[i])
+	{
+		result[i] = s1[i];
+		i++;
+	}
+	while (s2[j])
+	{
+		result[i] = s2[j];
+		i++;
+		j++;
+	}
+	result[i] = '\0';
+	return (result);
+}

test.txt

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+Si tu lit cette ligne GGWP
+Main non tu peux voir celle ci aussi 
+What tu celle la lis aussi
+LLL