diff --git a/Makefile b/Makefile
index 80cefda..e46ce2d 100755
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 NAME = minishell
-LIBFT = 42-libft/libft.a
-SRCS = minishell.c lexer.c parser.c caller.c built-in.c utils.c
+LIBFT = libft.a
+SRCS = minishell.c lexer.c parser.c utils.c
 OBJS = ${SRCS:.c=.o}
 
 READLINE_INC = ~/.brew/opt/readline/include
@@ -10,8 +10,8 @@ $(NAME):	$(OBJS)
 		gcc ${OBJS} ${LIB} -o ${NAME}
 
 $(LIBFT):	
-		${MAKE} -C ./42-libft
-		cp ./42-libft/libft.a .
+		${MAKE} -C ./libft
+		cp ./libft/libft.a .
 
 all:	$(LIBFT) $(NAME)
 
@@ -22,6 +22,8 @@ clean:
 		rm -rf ${OBJS}
 
 fclean:		clean
+		${MAKE} -C ./libft fclean
+		rm libft.a
 		rm -rf ${NAME}
 
 re:		fclean all
diff --git a/README.md b/README.md
index b7ba04b..8d6b780 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,13 @@
 # Minishell
 
+
+## TODO :
+
+
+
+## Notes :
+
+
+
+## Issues :
+
diff --git a/lexer.c b/lexer.c
index ac96686..1edd571 100644
--- a/lexer.c
+++ b/lexer.c
@@ -6,7 +6,7 @@
 /*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/05/02 13:44:57 by narnaud           #+#    #+#             */
-/*   Updated: 2022/05/02 17:05:17 by narnaud          ###   ########.fr       */
+/*   Updated: 2022/05/03 09:19:36 by narnaud          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -47,9 +47,9 @@ int	check_register(t_lexer *lex, char **line, char *tmp)
 	if (lex->state != ROOT_ST)
 		return (0);
 	spaces = 0;
-	if (is_space(**line))
+	if (ft_isspace(**line))
 	{
-		while (is_space(**line))
+		while (ft_isspace(**line))
 			(*line)++;
 		spaces = 1;
 	}
@@ -59,7 +59,7 @@ int	check_register(t_lexer *lex, char **line, char *tmp)
 			lex->next_type = ADD;
 		else
 			lex->next_type = OUT;
-		return (create_token(*lex, tmp));
+		return (create_token(lex, tmp));
 	}
 	else if (**line == '<' && (*line)++)
 	{
@@ -67,19 +67,18 @@ int	check_register(t_lexer *lex, char **line, char *tmp)
 			lex->next_type = HD;
 		else
 			lex->next_type = IN;
-		return (create_token(*lex, tmp));
+		return (create_token(lex, tmp));
 	}
 	else if (**line == '|')
 	{
-
 		(*line)++;
 		lex->next_type = PIPE;
-		create_token(*lex, tmp);
-		return (create_token(*lex, "|"));
+		create_token(lex, tmp);
+		return (create_token(lex, "|"));
 	}
 	if (!spaces)
 		return (0);
-	return (create_token(l-*ex, tmp));
+	return (create_token(lex, tmp));
 }
 
 int	replace_var(char **line, char *tmp, int tmp_i)
diff --git a/libft/Makefile b/libft/Makefile
index 08b2fe0..d2dd293 100755
--- a/libft/Makefile
+++ b/libft/Makefile
@@ -1,7 +1,7 @@
 NAME =	libft.a
 
 SRCS =	is/ft_isalpha.c is/ft_isdigit.c is/ft_isascii.c is/ft_isprint.c \
-		is/ft_isalnum.c
+		is/ft_isalnum.c is/ft_isspace.c
 
 SRCS +=	str/ft_len.c str/ft_lcpy.c str/ft_lcat.c str/ft_chr.c \
 		str/ft_rchr.c str/ft_ncmp.c str/ft_nstr.c str/ft_dup.c \
diff --git a/libft/is/ft_isspace.c b/libft/is/ft_isspace.c
index 9cbbcba..139f0a3 100644
--- a/libft/is/ft_isspace.c
+++ b/libft/is/ft_isspace.c
@@ -6,13 +6,13 @@
 /*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/03/24 10:05:51 by narnaud           #+#    #+#             */
-/*   Updated: 2022/03/24 10:06:15 by narnaud          ###   ########.fr       */
+/*   Updated: 2022/05/03 09:47:28 by narnaud          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "../libft.h"
 
-int	ft_isspace(char c)
+int	ft_isspace(int c)
 {
 	if (c > 8 && c < 14)
 		return (1);
diff --git a/libft/libft.h b/libft/libft.h
index 91a6acc..2f6e695 100755
--- a/libft/libft.h
+++ b/libft/libft.h
@@ -6,7 +6,7 @@
 /*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/10/19 14:42:45 by narnaud           #+#    #+#             */
-/*   Updated: 2022/03/25 13:31:43 by narnaud          ###   ########.fr       */
+/*   Updated: 2022/05/03 09:48:13 by narnaud          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -44,6 +44,7 @@ int		ft_isascii(int ch);
 int		ft_isdigit(int ch);
 int		ft_isprint(int ch);
 int		ft_isalnum(int ch);
+int		ft_isspace(int ch);
 void	*ft_memchr(const void *b, int c, size_t n);
 int		ft_memcmp(const void *s1, const void *s2, size_t n);
 void	*ft_memcpy(void *dst, const void *src, size_t n);
diff --git a/minishell.c b/minishell.c
index 733f430..ce91e2f 100644
--- a/minishell.c
+++ b/minishell.c
@@ -6,46 +6,38 @@
 /*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/05/02 12:14:09 by narnaud           #+#    #+#             */
-/*   Updated: 2022/05/02 17:43:27 by narnaud          ###   ########.fr       */
+/*   Updated: 2022/05/03 10:39:02 by narnaud          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 # include "minishell.h"
 
-t_command	*parser(t_token	*tok)
+t_command	*parser(t_token	*tok, t_command *prev)
 {
 	int 		i;
 	t_command	*cmd;
-	t_command	*ret;
 
+	if (!tok)
+		return (NULL);
 	cmd = ft_calloc(1, sizeof(t_command));
-	ret = cmd;
-	while (tok->value)
+	if (prev)
+		cmd->prev = prev;
+	i = 0;
+	cmd->argv = ft_calloc(count_arguments(tok) + 1, sizeof(char *));
+	while(tok && tok->type != PIPE)
 	{
-		i = 0;
-		cmd->argv = ft_calloc(count_arguments(tok) + 1, sizeof(char *));
-		while(tok->type != PIPE)
-		{
-			if (tok->type)
-				update_redir(cmd, tok);
-			else
-				cmd->argv[i++] = tok->value;
-			if (!tok->next)
-				break ;
-			tok = tok->next;
-		}
-		//printf("Input : %d\n", cmd->input);
-		//printf("Output : %d\n", cmd->output);
-		cmd->argv[i] = NULL;
-		if (tok->next)
-			tok = tok->next;
+		if (tok->type)
+			update_redir(cmd, tok);
 		else
-			break ;
-		cmd->next = ft_calloc(1, sizeof(t_command));
-		cmd->next->prev = cmd;
-		cmd = cmd->next;
+			cmd->argv[i++] = tok->value;
+		if (DEBUG)
+			printf("token : %s, type: %d\n", tok->value, tok->type);
+		tok = tok->next;
 	}
-	return (ret);
+	cmd->argv[i] = NULL;
+	if (tok && tok->type == PIPE)
+		cmd->next = parser(tok->next, cmd);
+	return (cmd);
 }
 
 t_token	*lexer(char *line)
@@ -54,19 +46,21 @@ t_token	*lexer(char *line)
 	char	*tmp;
 	int		tmp_i;
 
-	lex = ft_calloc(1, sizeof *ret);
-	lex->state = IN_ROOT;
+	lex = ft_calloc(1, sizeof *lex);
+	lex->state = ROOT_ST;
 	tmp = ft_calloc(1024, sizeof *tmp);
 	tmp_i = 0;
 	while (*line)
 	{
-		if (check_state(lex, &line) == 0)
+		if (DEBUG)
+			printf("%c\n", *line);
+		if (check_state(lex, &line))
 			continue;
 		if (lex->state != S_QUOTE_ST && *line == '$')
 			tmp_i = replace_var(&line, tmp, tmp_i);
 		if (check_register(lex, &line, tmp))
 		{
-			i = 0;
+			tmp_i = 0;
 			ft_bzero(tmp, 1024);
 			continue ;
 		}
@@ -81,16 +75,17 @@ t_token	*lexer(char *line)
 int	launcher(t_env	env)
 {
 	char	*line;
-	int		ret;
 
+	(void)env;
+	// TODO: handle ret
 	line = readline("$ ");
 	if (line == NULL)
 		halt(EXIT_FAILURE);
 	if (is_empty(line))
 		return (EXIT_FAILURE);
-	ret = piper(parser(lexer(line)));
+	parser(lexer(line), NULL);
 	add_history(line);
-	return (ret);
+	return (0);
 }
 
 int	main(int argc, char **argv, char**envp)
@@ -99,6 +94,7 @@ int	main(int argc, char **argv, char**envp)
 		(void)argv;
 	(void)envp;
 	t_env	env;
+	env.null = 0;
 	while (1)
 		launcher(env);
 	clear_history();
diff --git a/minishell.h b/minishell.h
index 90c45e2..a5d5fd5 100644
--- a/minishell.h
+++ b/minishell.h
@@ -6,7 +6,7 @@
 /*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/05/02 13:50:44 by narnaud           #+#    #+#             */
-/*   Updated: 2022/05/02 16:45:28 by narnaud          ###   ########.fr       */
+/*   Updated: 2022/05/03 09:34:27 by narnaud          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,6 +15,7 @@
 # define PIPE_MAX_SIZE 8192
 # define PATHS_MAX_SIZE 126
 # define PROMPT_PREFIX 0
+# define DEBUG 1 
 
 # include "libft/libft.h"
 # include <fcntl.h>
@@ -32,14 +33,26 @@
 
 char	**g_env;
 
+// ----------------------------------Utils.c
+
+void	halt(int ret_code);
+int		is_empty(char *line);
+int		init_file(char	*filename, int	mode);
 
 // ----------------------------------Piper.c
+typedef struct	s_env
+{
+	int	null;
+}	t_env;
+
 typedef	struct	s_command
 {
 	char				**argv;
 	char				**envp;
 	int					argc;
 	int					fd[2];
+	int					input;
+	int					output;
 	char				*heredoc;
 	struct s_command	*next;
 	struct s_command	*prev;
@@ -48,6 +61,16 @@ typedef	struct	s_command
 
 // ----------------------------------Parser.c
 
+typedef enum e_type
+{
+	WORD,
+	PIPE,
+	OUT,
+	ADD,
+	IN,
+	HD,
+}	t_type;
+
 typedef struct s_token
 {
 	char			*value;
@@ -55,8 +78,8 @@ typedef struct s_token
 	struct s_token	*next;
 }	t_token;
 
-size_t	count_arguments(t_token tok);
-void	update_redir(t_command *cmd, t_token tok);
+size_t	count_arguments(t_token *tok);
+void	update_redir(t_command *cmd, t_token *tok);
 
 // ----------------------------------Lexer.c
 
@@ -68,16 +91,6 @@ typedef enum e_state
 	D_QUOTE_ST,
 }	t_state;
 
-typedef enum e_type
-{
-	WORD,
-	PIPE,
-	OUT,
-	ADD,
-	IN,
-	HD,
-}	t_type;
-
 typedef struct s_lex
 {
 	t_state		state;
@@ -90,6 +103,9 @@ typedef struct s_lex
 int	create_token(t_lexer *lex, char str[]);
 int	check_register(t_lexer *lex, char **line, char *tmp);
 int	replace_var(char **line, char *tmp, int tmp_i);
-int	check_state(t_lexer *lex, char *line, int i);
+int	check_state(t_lexer *lex, char **line);
+
+
+
 
 #endif
diff --git a/utils.c b/utils.c
new file mode 100644
index 0000000..cc271f4
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,108 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   utils.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2022/05/03 08:57:53 by narnaud           #+#    #+#             */
+/*   Updated: 2022/05/03 09:00:40 by narnaud          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+void	push_heredoc(char *str, int fd)
+{
+	char	*line;
+
+	while(1)
+	{
+		line = readline(">");
+		if (!ft_strncmp(line, str, ft_strlen(str) + 1))
+			break;
+		ft_putstr_fd(line, fd);
+		write(fd, "\n", 1);
+	}
+}
+
+char	**get_commands(char *line)
+{
+	char	**split;
+
+	split = ft_split(line, '|');
+	return (split);
+}
+
+int	is_empty(char *line)
+{
+	while (*line)
+	{
+		if (*line <= 9 || (*line >= 13 && *line != 32))
+			return (0);
+		line++;
+	}
+	return (1);
+}
+
+int	msg_n_ret(char *msg, int ret)
+{
+	printf("%s", msg);
+	return (ret);
+}
+
+int	init_file(char	*filename, int	mode)
+{
+	return (open(filename, mode | O_CREAT, 0644));
+}
+
+int is_space(char ch)
+{
+	if (ch == 32 || (ch > 8 && ch < 14))
+		return (1);
+	else
+		return (0);
+}
+
+void	termios(int ctl)
+{
+	struct termios	termios_p;
+	int				tty;
+
+	tty = ttyslot();
+	if (tcgetattr(tty, &termios_p) < 0)
+	{
+		perror("stdin");
+		exit (EXIT_FAILURE);
+	}
+	//termios_p.c_oflag &= CRDLY;
+	//termios_p.c_lflag &= ICANON;
+	if (ctl)
+	{
+		termios_p.c_lflag |= ECHOCTL;
+		termios_p.c_cc[VQUIT] = 28;
+	}
+	else
+	{
+		termios_p.c_lflag &= ~(ECHOCTL);
+		termios_p.c_cc[VQUIT] = 0;
+	}
+	tcsetattr(tty, TCSANOW, &termios_p);
+}
+
+void	sigs_handler(int sig_num)
+{
+	if (sig_num == SIGQUIT)
+		printf("QUIT: 3\n");
+	else if (sig_num == SIGINT)
+		printf("\n");
+	rl_on_new_line();
+	rl_replace_line("", 0);
+	rl_redisplay();
+	return ;
+}
+void	halt(int ret_code)
+{
+	printf("exit");
+	exit(ret_code);
+}