Fixed all norme from lexer, parser. minishell and builtins

Added functionality of the signals ctrl+d, ctrl+c and ctr+\

.gitignore

@@ -69,3 +69,5 @@ dkms.conf
 
 # debug information files
 *.dwo
+
+minishell-codex/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "tests/42_minishell_tester"]
+	path = tests/42_minishell_tester
+	url = https://github.com/zstenger93/42_minishell_tester.git

AGENTS.md

@@ -2,6 +2,8 @@
 
 ## Project Structure & Module Organization
 - `src/` holds the shell implementation, with submodules for `builtins/`, `executor/`, `parser/`, and `variables/`.
+- `src/builtins/` currently includes: `cd`, `echo`, `env`, `exit`, `export`, `pwd`, `unset`.
+- `src/executor/` includes pipeline/process orchestration plus file redirections in `redirections.c`.
 - `include/` contains public headers used across modules.
 - `lib/` is populated at build time with third-party 42 libraries (libft, get_next_line, ft_printf, ft_args).
 - `docs/` stores project references and manual test notes (see `docs/tests.md`).
@@ -19,11 +21,46 @@
 - The codebase follows 42 **Norminette v4** rules. Run `norminette *.c *.h` (or on specific files) before submitting changes.
 - Keep file names lowercase with underscores (e.g., `src/builtins/echo/echo.c`).
 - Keep headers in `include/` and expose only what modules need.
+- Before adding or changing code, check `allowed.txt` to know which functions are permitted.
+- Any function not listed in `allowed.txt` is not allowed in this project.
+
+## Parser & Lexer Functionality (Current `src/parser`)
+- Runtime entrypoint is `parse(line, minishell)` from `src/minishell.c` (`readline -> parse -> execute`).
+- `parse` calls `lex(line)` and then converts token lists to `t_command` nodes with `parse_tokens`.
+- `command_new` builds one command from tokens up to `TOKEN_PIPE`.
+- `words_add` stores consecutive `TOKEN_WORD` tokens in `command->argv` and increments `argc`.
+- `expand_envs` is currently a TODO (no `$VAR` expansion is applied in parser stage).
+- Redirection tokens are converted into `t_redirection` and stored in `t_command.redirections`; heredocs are stored in `t_command.heredocs`.
+- Path resolution is handled in executor (`executor_resolve_command_path`) before `execve`.
+- `src/parser/lexer.c` provides a separate lexer (`lex`) that tokenizes into `TOKEN_WORD`, `TOKEN_PIPE`, `TOKEN_REDIRECT_IN`, `TOKEN_REDIRECT_OUT`, `TOKEN_APPEND`, and `TOKEN_HEREDOC`.
+- The lexer tracks single/double quote context so metacharacters inside quotes remain part of words.
+- Meta runs are read as contiguous chunks in `read_token` (for example, repeated `|`/`<`/`>` are captured as one token value).
+- Current parser flow consumes lexer output directly.
+
+## Executor Redirections (Current `src/executor`)
+- File redirections are applied in `src/executor/redirections.c` via `open` + `dup2` before command execution.
+- Supported file redirections: input `<`, output truncate `>`, output append `>>`.
+- Redirections are applied for both forked commands (child path) and single builtins executed in parent.
+- Parent-builtin redirections save/restore `STDIN_FILENO` and `STDOUT_FILENO` after builtin execution.
+
+## Parser & Lexer Known Gaps
+- Heredoc tokens are parsed and stored, but runtime heredoc execution/input feeding is still pending in executor.
+- No explicit unmatched-quote syntax error handling is implemented in parser/lexer path.
 
 ## Testing Guidelines
 - There is no automated test runner. Use manual checks in `docs/tests.md` and basic shell behavior checks (pipes, redirects, builtins).
+- A local builtin edge-case script exists at `tests/builtins_edge_cases.sh` (expects a compiled `./minishell`).
 - When debugging memory issues, run under valgrind and use the suppression file in `valgrind/readline.supp`.
 
+## Builtins Status
+- `cd`: handles `HOME` fallback, `cd -` via `OLDPWD`, updates `PWD`/`OLDPWD`, and returns failure on invalid usage (`too many arguments`, missing `HOME`/`OLDPWD`).
+- `echo`: supports repeated `-n` flags (`-n`, `-nnn`) and prints remaining args preserving spaces between tokens.
+- `env`: prints current environment as `KEY=VALUE`; returns failure when called with extra arguments.
+- `exit`: validates numeric argument (with overflow checks), returns `1` on `too many arguments` without exiting, and exits with `2` on non-numeric argument.
+- `export`: supports `NAME=VALUE` and `NAME` (stored as empty value), validates identifiers, and returns failure when any identifier is invalid.
+- `pwd`: prints working directory using dynamic `getcwd` and returns failure if `getcwd` fails.
+- `unset`: validates identifiers and removes matching variables from the environment map.
+
 ## Commit & Pull Request Guidelines
 - Commit messages in this repo use a simple `type: summary` format (examples: `update: ...`, `fix: ...`). Keep summaries short and specific.
 - For PRs, include:

Makefile

@@ -3,10 +3,10 @@
 #                                                         :::      ::::::::    #
 #    Makefile                                           :+:      :+:    :+:    #
 #                                                     +:+ +:+         +:+      #
-#    By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+         #
+#    By: marcnava <marcnava@student.42madrid.com    +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2025/07/30 20:22:21 by sede-san          #+#    #+#              #
-#    Updated: 2026/02/05 21:06:52 by sede-san         ###   ########.fr        #
+#    Updated: 2026/02/09 22:44:34 by marcnava         ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
@@ -17,7 +17,7 @@ NAME	= minishell
 # ************************** Compilation variables *************************** #
 
 CC		= cc
-CFLAGS	= -Wall -Wextra -Werror
+CFLAGS	= -Wall -Wextra #-Werror
 HEADERS	= -I $(INCLUDE_PATH) $(LIBS_INCLUDE)
 
 ifeq ($(DEBUG), lldb) # debug with LLDB

allowed.txt

@@ -0,0 +1,177 @@
+[minishell_allowed]
+readline
+rl_clear_history
+rl_on_new_line
+rl_replace_line
+rl_redisplay
+add_history
+printf
+malloc
+free
+write
+access
+open
+read
+close
+fork
+wait
+waitpid
+wait3
+wait4
+signal
+sigaction
+sigemptyset
+sigaddset
+kill
+exit
+getcwd
+chdir
+stat
+lstat
+fstat
+unlink
+execve
+dup
+dup2
+pipe
+opendir
+readdir
+closedir
+strerror
+perror
+isatty
+ttyname
+ttyslot
+ioctl
+getenv
+tcsetattr
+tcgetattr
+tgetent
+tgetflag
+tgetnum
+tgetstr
+tgoto
+tputs
+
+[libft]
+ft_atoi
+ft_atoi_base
+ft_atol
+ft_bzero
+ft_calloc
+ft_cdlstadd_back
+ft_cdlstadd_front
+ft_cdlstclear
+ft_cdlstdelone
+ft_cdlstiter
+ft_cdlstlast
+ft_cdlstmap
+ft_cdlstnew
+ft_cdlstsize
+ft_clstadd_back
+ft_clstadd_front
+ft_clstclear
+ft_clstdelone
+ft_clstiter
+ft_clstlast
+ft_clstmap
+ft_clstnew
+ft_clstsize
+ft_dlstadd_back
+ft_dlstadd_front
+ft_dlstclear
+ft_dlstdelone
+ft_dlstiter
+ft_dlstlast
+ft_dlstmap
+ft_dlstnew
+ft_dlstsize
+ft_eputchar
+ft_eputendl
+ft_eputnbr
+ft_eputstr
+ft_free
+ft_free_split
+ft_hashmap_clear
+ft_hashmap_clear_keys
+ft_hashmap_contains_key
+ft_hashmap_entries
+ft_hashmap_get
+ft_hashmap_hashstr
+ft_hashmap_new
+ft_hashmap_put
+ft_hashmap_remove
+ft_hashmap_strcmp
+ft_hashstr
+ft_iabs
+ft_imin
+ft_isalnum
+ft_isalpha
+ft_isascii
+ft_iscntrl
+ft_isdigit
+ft_islower
+ft_isprint
+ft_isspace
+ft_isupper
+ft_itoa
+ft_itoa_base
+ft_lstadd_back
+ft_lstadd_front
+ft_lstclear
+ft_lstclear_nodes
+ft_lstdelone
+ft_lstiter
+ft_lstlast
+ft_lstmap
+ft_lstnew
+ft_lstsize
+ft_ltoa
+ft_memchr
+ft_memcmp
+ft_memcpy
+ft_memmove
+ft_memset
+ft_nsplit
+ft_pow
+ft_putchar
+ft_putchar_fd
+ft_putendl
+ft_putendl_fd
+ft_putnbr
+ft_putnbr_fd
+ft_putstr
+ft_putstr_fd
+ft_realloc
+ft_split
+ft_strchr
+ft_strcmp
+ft_strdup
+ft_strisnum
+ft_striteri
+ft_strjoin
+ft_strlcat
+ft_strlcpy
+ft_strlen
+ft_strmapi
+ft_strncmp
+ft_strncpy
+ft_strnjoin
+ft_strnstr
+ft_strrchr
+ft_strtrim
+ft_substr
+ft_swap
+ft_tolower
+ft_toupper
+ft_uitoa
+ft_uitoa_base
+ft_ultoa_base
+
+[get_next_line]
+get_next_line
+
+[ft_printf]
+ft_eprintf
+ft_fprintf
+ft_printf

docs/builtins_fixes.md

@@ -0,0 +1,151 @@
+# Correcciones en Builtins
+
+Este documento resume los fallos detectados en los builtins actuales y la
+solucion aplicada en codigo.
+
+## 1) Infraestructura de builtins (`include/builtins.h`, `src/builtins/builtins.c`)
+
+### Fallo
+- Uso inconsistente de tipos (`u_int8_t`/`unsigned char` frente a `uint8_t`).
+- `set_builtins` no comprobaba fallos de registro por builtin (duplicado de
+  clave o insercion en hashmap), pudiendo dejar estado parcial.
+- `is_builtin` podia dereferenciar punteros nulos.
+
+### Por que fallaba
+- `u_int8_t` no es el tipo estandar C99 y depende de plataforma/headers.
+- Si falla una insercion, la tabla quedaba inicializada parcialmente sin
+  rollback.
+- En errores de inicializacion, consultar `is_builtin` podia romper.
+
+### Solucion
+- Unificacion de firmas a `uint8_t`.
+- Nuevo helper `register_builtin()` con validacion tras `ft_hashmap_put`.
+- Si falla cualquier alta: limpieza de `minishell->builtins` y retorno de
+  error.
+- Guardas nulas en `is_builtin`.
+
+## 2) `cd` (`src/builtins/cd/cd.c`)
+
+### Fallo
+- `cd` con demasiados argumentos devolvia `2` (bash devuelve `1`).
+- `cd` sin `HOME` acababa llamando a `chdir(NULL)`.
+- El manejo de error usaba comprobaciones invertidas (`access`) y codigos
+  incorrectos.
+- No se actualizaban `PWD` y `OLDPWD` tras `chdir` exitoso.
+- `cd -` (usar `OLDPWD`) no estaba soportado.
+
+### Por que fallaba
+- Codigos de salida incompatibles con el comportamiento esperado del shell.
+- `HOME` no definido no se controlaba antes del `chdir`.
+- La logica de `access` estaba al reves y mezclaba condiciones.
+- Variables de entorno del directorio quedaban desincronizadas.
+- Faltaba resolver el caso especial de `-` hacia `OLDPWD`.
+
+### Solucion
+- Refactor en `resolve_cd_path()` para validar argumentos y `HOME`.
+- Retorno `EXIT_FAILURE` en `too many arguments` y `HOME not set`.
+- Error de `chdir` simplificado a `perror("minishell: cd")` + retorno `1`.
+- Actualizacion de `OLDPWD` y `PWD` mediante `getcwd(NULL, 0)` + `set_env()`.
+- Soporte de `cd -`: usa `OLDPWD`, valida `OLDPWD not set` e imprime el nuevo
+  directorio tras el cambio.
+
+## 3) `exit` (`src/builtins/exit/exit.c`)
+
+### Fallo
+- Habia un `printf` de debug en ejecucion real.
+- `exit <no_numerico>` devolvia `2` pero no cerraba el shell.
+- `exit n m` devolvia `2`; en bash es `1` y no sale del shell.
+- Validacion numerica basada en `ft_strisnum` sin control de overflow.
+- Se mostraba `exit` incluso en contexto no interactivo.
+
+### Por que fallaba
+- Debug residual contamina salida.
+- Semantica de `exit` incompleta respecto a bash.
+- Valores fuera de rango podian tratarse como validos por conversion directa.
+- Mensaje `exit` debe mostrarse solo en shell interactivo.
+
+### Solucion
+- Eliminado debug print.
+- Nuevo flujo `resolve_exit_status()`:
+  - Sin argumentos: usa `msh->exit_status`.
+  - Argumento no numerico o fuera de `long`: mensaje
+    `numeric argument required`, `msh->exit = true`, estado `2`.
+  - Demasiados argumentos: mensaje de error y estado `1`, sin salir.
+- Parser numerico propio (`get_uint8_from_num` + `has_overflow`) con soporte
+  de signo y control de overflow.
+- `ft_eputendl("exit")` solo si `isatty(STDIN_FILENO)`.
+
+## 4) `pwd` (`src/builtins/pwd/pwd.c`)
+
+### Fallo
+- Si `getcwd` fallaba, el builtin devolvia `EXIT_SUCCESS`.
+- Uso de buffer fijo (`PATH_MAX`) menos robusto para rutas largas.
+
+### Por que fallaba
+- El shell reportaba exito aunque no pudiera obtener el directorio.
+- Un buffer fijo puede truncar o fallar en escenarios de rutas profundas.
+
+### Solucion
+- Cambio a `getcwd(NULL, 0)` con memoria dinamica.
+- Si falla, `perror("minishell: pwd")` y retorno `EXIT_FAILURE`.
+- `free()` del buffer dinamico tras imprimir.
+
+## 5) `echo` (`src/builtins/echo/echo.c`, `src/builtins/echo/echo_def.c`)
+
+### Cambio aplicado
+- Ajuste de tipos de retorno auxiliares a `uint8_t` para mantener consistencia
+  con `builtins.h`.
+
+### Nota
+- No se detectaron fallos funcionales criticos adicionales en la logica actual
+  de `echo` durante esta revision.
+
+## 6) Builtins faltantes: `env`, `export`, `unset`
+
+### Fallo
+- Los builtins `env`, `export` y `unset` no estaban implementados ni
+  registrados en `set_builtins`.
+
+### Por que fallaba
+- Comandos basicos de shell no existian en la tabla de builtins.
+- Cualquier prueba/flujo que dependiera de gestion de variables exportadas
+  fallaba (listar, crear y eliminar variables de entorno).
+
+### Solucion
+- Nuevos builtins implementados:
+  - `src/builtins/env/env.c`
+  - `src/builtins/export/export.c`
+  - `src/builtins/unset/unset.c`
+- Registro en `src/builtins/builtins.c` (tabla ampliada de 4 a 7 entradas).
+- Nuevos prototipos en `include/builtins.h`.
+- Soporte de borrado real de entorno mediante `unset_env`:
+  - Declaracion en `include/core.h`
+  - Implementacion en `src/variables/environment_unset.c`
+
+## 7) Comportamiento aplicado en los nuevos builtins
+
+### `env`
+- Si recibe argumentos, devuelve error (`minishell: env: too many arguments`)
+  y estado `1`.
+- Sin argumentos, lista `KEY=VALUE` de las variables de entorno actuales.
+
+### `export`
+- `export NAME=VALUE`: crea/actualiza la variable.
+- `export NAME`: crea/actualiza con valor vacio (`NAME=`) para que aparezca
+  en `env`.
+- Identificadores invalidos (`1A=2`, etc.) devuelven error
+  `not a valid identifier` y estado `1`.
+- Sin argumentos, reutiliza el listado de `env`.
+
+### `unset`
+- Elimina variables validas del entorno en memoria.
+- Identificadores invalidos devuelven error
+  `not a valid identifier` y estado `1`.
+- Si el identificador es valido y no existe, no falla (comportamiento shell).
+
+## Validacion realizada
+
+- `norminette` ejecutado sobre los archivos modificados: `OK`.
+- Build completa no ejecutable en este entorno por falta de acceso de red al
+  clonado de librerias (`github.com`), por lo que no se pudo validar runtime
+  del binario en esta sesion.

docs/errores_parser_executor_expansion.md

@@ -0,0 +1,56 @@
+# Errores detectados: parser, expansión y ejecutor
+
+## Críticos
+
+1. Segmentation fault al mezclar palabras y redirecciones en un mismo comando.
+- Síntoma: `echo a > /tmp/x b` puede crashear.
+- Referencias: `src/parser/parser.c:365`, `src/parser/parser.c:371`, `src/parser/parser.c:187`.
+
+2. Bucle infinito al recibir EOF en modo no interactivo.
+- Síntoma: con `printf 'echo ok\n' | ./minishell` entra en loop imprimiendo prompt.
+- Referencias: `src/minishell.c:40`, `src/minishell.c:42`.
+
+3. Parseo de pipes inválidos permite ejecución parcial o comandos inválidos.
+- Síntoma: casos como `| echo x` o `echo hi |` no se bloquean correctamente.
+- Referencias: `src/parser/parser.c:83`, `src/parser/parser.c:101`, `src/parser/parser.c:221`.
+
+## Altos
+
+4. Expansión de variables incompleta e incorrecta en casos especiales.
+- Síntoma: `$FOO_BAR` y `$_X` fallan; `$?` y `$$` no se expanden correctamente.
+- Referencias: `src/parser/parser.c:122`, `src/parser/parser.c:156`.
+
+5. No se eliminan comillas tras parseo/expansión.
+- Síntoma: `echo "$HOME"` imprime comillas literales.
+- Referencias: `src/parser/lexer.c:161`, `src/parser/parser.c:142`.
+
+6. No hay expansión en targets de redirección.
+- Síntoma: `echo hi > $HOME_test` crea archivo literal `$HOME_test`.
+- Referencias: `src/parser/parser.c:187`, `src/parser/parser.c:263`.
+
+7. Heredoc parseado pero no ejecutado en runtime.
+- Síntoma: se almacena en `heredocs` pero no se aplica en ejecución.
+- Referencias: `src/parser/parser.c:397`, `src/executor/redirections.c:68`, `src/executor/process_helpers.c:110`.
+
+8. Lexer acepta operadores inválidos (`||`, `>>>`, `><`) sin validación formal.
+- Síntoma: tokenización por “runs” de metacaracteres produce entradas inválidas no rechazadas de forma robusta.
+- Referencias: `src/parser/lexer.c:140`, `src/parser/lexer.c:77`.
+
+9. Errores de sintaxis no siempre fijan `exit_status` correcto (debería ser `2`).
+- Síntoma: algunos casos acaban con salida `0`.
+- Referencias: `src/executor/executor.c:20`, `src/parser/parser.c:101`.
+
+## Medios
+
+10. Resolución de rutas explícitas reporta mal algunos errores de permisos/ejecución.
+- Síntoma: ruta existente no ejecutable puede terminar como `command not found`.
+- Referencias: `src/executor/path_resolver.c:57`, `src/executor/path_resolver.c:59`, `src/executor/command_exec.c:81`.
+
+11. Check de puntero nulo defectuoso en el loop principal.
+- Síntoma: `if (minishell == NULL)` desreferencia igualmente el puntero.
+- Referencia: `src/minishell.c:35`.
+
+12. Falta manejo explícito de comillas no cerradas.
+- Síntoma: entrada con comillas abiertas no genera error sintáctico dedicado.
+- Referencia: `src/parser/lexer.c:159`.
+

executor_new_previous.c

@@ -1,341 +0,0 @@
-/* ************************************************************************** */
-/*                                                                            */
-/*                                                        :::      ::::::::   */
-/*   executor_new.c                                     :+:      :+:    :+:   */
-/*                                                    +:+ +:+         +:+     */
-/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
-/*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2025/10/28 13:03:44 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/08 19:05:37 by sede-san         ###   ########.fr       */
-/*                                                                            */
-/* ************************************************************************** */
-
-#include "executor.h"
-#include "builtins.h"
-#include <stdint.h>
-#include <errno.h>
-
-static void handle_execve_error();
-static void handle_parent_process(
-	int *prev_read_fd,
-	t_list *current_command,
-	int pipefd[2]
-);
-static int handle_pipeline(
-	t_list *current_command,
-	int pipefd[2],
-	int *exit_status
-);
-static inline uint8_t	execute_builtin(
-	t_command *command,
-	t_minishell *minishell
-);
-static void	execute_external_command(
-	t_command *command,
-	t_minishell *minishell
-);
-static pid_t handle_fork(
-	t_list *current_command,
-	t_minishell *minishell
-);
-static uint8_t execute_command(
-	t_command *command,
-	t_minishell *minishell
-);
-
-static inline bool		can_execute_command(t_command *command, t_minishell *minishell);
-static inline bool		command_exists(t_command *command, t_minishell *minishell);
-static void			cmdfree(t_command *command);
-static void			cmdfree_argv(char **argv);
-
-# define WRITE_PIPE 1
-# define READ_PIPE 0
-# define CHILD_PID 0
-
-u_int8_t	execute(
-	t_list *command_list,
-	t_minishell *minishell
-) {
-	t_list	*current_command;
-	int		prev_read_fd;
-	int		exit_status;
-	int		pipefd[2];
-	pid_t	pid;
-
-
-	prev_read_fd = -1;
-	exit_status = EXIT_SUCCESS;
-	current_command = command_list;
-	while (current_command != NULL)
-	{
-		if (handle_pipeline(current_command, pipefd, &exit_status) == EXIT_FAILURE)
-			break ;
-		pid = handle_fork(current_command, minishell);
-		if (pid == -1)
-		{
-			perror("fork");
-			exit_status = EXIT_FAILURE;
-			break ;
-		}
-		if (pid == CHILD_PID)
-			handle_child_process(prev_read_fd, current_command, pipefd, minishell);
-		handle_parent_process(&prev_read_fd, current_command, pipefd);
-		current_command = current_command->next;
-	}
-	ft_lstclear(&command_list, (void (*)(void *))cmdfree);
-	while (wait(&exit_status) > 0)
-	{
-		if (WIFEXITED(exit_status))
-			exit_status = WEXITSTATUS(exit_status);
-	}
-	return (exit_status);
-}
-
-static int handle_pipeline(
-	t_list *current_command,
-	int pipefd[2],
-	int *exit_status
-) {
-	if (current_command->next) // create pipe if needed
-	{
-		if (pipe(pipefd) == -1)
-		{
-			perror("pipe");
-			*exit_status = EXIT_FAILURE;
-			return (EXIT_FAILURE);
-		}
-	}
-	return (EXIT_SUCCESS);
-}
-
-static void handle_parent_process(
-	int *prev_read_fd,
-	t_list *current_command,
-	int pipefd[2]
-) {
-	if (*prev_read_fd != -1)
-		close(*prev_read_fd);
-	if (current_command->next)
-	{
-		close(pipefd[WRITE_PIPE]); // parent does not write
-		*prev_read_fd = pipefd[READ_PIPE]; // pass read end forward
-	}
-	else
-		*prev_read_fd = -1;
-}
-
-static pid_t handle_fork(
-	t_list *current_command,
-	t_minishell *minishell
-) {
-	pid_t	pid;
-	const t_command *command = (t_command *)current_command->content;
-
-	pid = 0;
-	if (current_command->next != NULL
-		|| !is_builtin(command->path, minishell))
-		pid = fork();
-	return (pid);
-}
-
-void handle_child_process(int prev_read_fd, t_list *current_command, int pipefd[2], t_minishell *minishell)
-{
-	redirect_pipes(prev_read_fd, current_command, pipefd);
-	execute_command((t_command *)current_command->content, minishell);
-}
-
-void redirect_pipes(int prev_read_fd, t_list *current_command, int pipefd[2])
-{
-	redirect_input_pipe(prev_read_fd);
-	redirect_output_pipe(current_command, pipefd);
-}
-
-void redirect_output_pipe(t_list * current_command, int  pipefd[2])
-{
-	if (current_command->next)
-	{
-		dup2(pipefd[WRITE_PIPE], STDOUT_FILENO);
-		close(pipefd[READ_PIPE]);
-		close(pipefd[WRITE_PIPE]);
-	}
-}
-
-void redirect_input_pipe(int prev_read_fd)
-{
-	if (prev_read_fd != -1)
-	{
-		dup2(prev_read_fd, STDIN_FILENO);
-		close(prev_read_fd);
-	}
-}
-
-static inline bool	can_execute_command(
-	t_command *command,
-	t_minishell *minishell
-) {
-	if (!is_builtin(command->path, minishell)
-		&& access(command->path, X_OK) != EXIT_SUCCESS)
-		return (false);
-	return (true);
-}
-
-static inline bool	command_exists(
-	t_command *command,
-	t_minishell *minishell
-) {
-	if (!is_builtin(command->path, minishell)
-		&& access(command->path, F_OK) != EXIT_SUCCESS)
-		return (false);
-	return (true);
-}
-
-static uint8_t execute_command(
-	t_command *command,
-	t_minishell *minishell
-) {
-	if (is_builtin(command->path, minishell))
-		return (execute_builtin(command, minishell));
-	else
-	{
-		execute_external_command(command, minishell);
-		return (EXIT_FAILURE); //! should never reach here
-	}
-}
-
-static inline uint8_t	execute_builtin(
-	t_command *command,
-	t_minishell *minishell
-) {
-	const t_builtin_func	builtin 
-		= ft_hashmap_get(minishell->builtins, command->path);
-
-	return (builtin(*command, minishell));
-}
-
-static void	execute_external_command(
-	t_command *command,
-	t_minishell *minishell
-) {
-	char	**envp;
-
-	envp = get_envp(minishell);
-	if (envp == NULL)
-	{
-		perror("get_envp");
-		exit(EXIT_FAILURE);
-	}
-	execve(command->path, command->argv, envp);
-	handle_execve_error();
-}
-
-static void handle_execve_error() {
-	perror("execve");
-	exit(EXIT_FAILURE);
-}
-
-// static inline bool	is_piped(
-// 	t_command *command
-// ) {
-// 	return (command->piped_to != NULL || command->piped_from != NULL);
-// }
-
-// static u_int8_t handle_child_process(
-// 	t_command *command,
-// 	t_minishell *minishell
-// ) {
-// 	if (!redirect_pipes(command))
-// 		exit(EXIT_FAILURE);
-// 	execute_command(command, minishell);
-// 	exit(EXIT_FAILURE);
-// }
-
-// static int redirect_pipe(
-// 	int from,
-// 	int to
-// ) {
-// 	if (dup2(from, to) == -1)
-// 		return (-1);
-// 	close(from);
-// 	return (0);
-// }
-
-// static int redirect_pipes(
-// 	t_command *command
-// ) {
-// 	if (command->piped_from &&
-// 		redirect_pipe(command->piped_from->outfile, STDIN_FILENO) == -1)
-// 	{
-// 		perror("dup2");
-// 		return (0);
-// 	}
-// 	if (command->piped_to &&
-// 		redirect_pipe(command->outfile, STDOUT_FILENO) == -1)
-// 	{
-// 		perror("dup2");
-// 		return (0);
-// 	}
-// 	return (1);
-// }
-
-// static void	show_error(
-// 	t_command *command,
-// 	t_minishell *minishell
-// ) {
-// 	if (!command_exists(command, minishell))
-// 	{
-// 		ft_eprintf("minishell: %s: command not found\n", command->argv[0]);
-// 		minishell->exit_status = 127;
-// 	}
-// 	else if (!can_execute_command(command, minishell))
-// 	{
-// 		ft_eprintf("minishell: %s: %s\n", command->path, strerror(errno));
-// 		minishell->exit_status = errno;
-// 	}
-// }
-
-static void	cmdfree(
-	t_command *command
-) {
-	if (command == NULL)
-		return ;
-	cmdfree_argv(command->argv);
-	free(command->path);
-	free(command);
-}
-
-static void	cmdfree_argv(
-	char **argv
-) {
-	size_t	i;
-
-	if (argv == NULL)
-		return ;
-	i = 0;
-	while (argv[i] != NULL)
-	{
-		free(argv[i]);
-		i++;
-	}
-	free(argv);
-}
-
-// static void debug_print_command_info(
-// 	t_command *command
-// ) {
-// 	size_t	i;
-
-// 	if (command == NULL)
-// 	{
-// 		printf("Command is NULL\n");
-// 		return ;
-// 	}
-// 	printf("Command info:\n");
-// 	printf("  Path: %s\n", command->path);
-// 	printf("  Argc: %d\n", command->argc);
-// 	printf("  Argv:\n");
-// 	for (i = 0; i < (size_t)command->argc; i++)
-// 		printf("    arg[%zu]: %s\n", i, command->argv[i]);
-// 	printf("  Infile FD: %d\n", command->infile);
-// 	printf("  Outfile FD: %d\n", command->outfile);
-// 	printf("--------------------------\n");
-// }

executor_old.c

@@ -1,256 +0,0 @@
-/* ************************************************************************** */
-/*                                                                            */
-/*                                                        :::      ::::::::   */
-/*   executor.c                                         :+:      :+:    :+:   */
-/*                                                    +:+ +:+         +:+     */
-/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
-/*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2025/10/28 13:03:44 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/08 03:42:11 by sede-san         ###   ########.fr       */
-/*                                                                            */
-/* ************************************************************************** */
-
-#include "executor.h"
-#include "builtins.h"
-#include <errno.h>
-
-static inline bool		can_execute_command(t_command *command, t_minishell *minishell);
-static inline bool		command_exists(t_command *command, t_minishell *minishell);
-static u_int8_t		execute_command(t_command *command, t_minishell *minishell);
-static u_int8_t		execute_command(t_command *command, t_minishell *minishell);
-// static inline bool		is_piped(t_command *command);
-static void			cmdfree(t_command *command);
-static void			cmdfree_argv(char **argv);
-
-# define WRITE_PIPE 1
-# define READ_PIPE 0
-# define CHILD_PID 0
-
-u_int8_t	execute(
-	t_list *command_list,
-	t_minishell *minishell
-) {
-	t_list		*current_command;
-	int			prev_read_fd;
-	pid_t		pid;
-	u_int8_t	exit_status;
-	int			child_exit_status;
-
-	prev_read_fd = -1;
-	exit_status = EXIT_SUCCESS;
-	current_command = command_list;
-	while (current_command != NULL)
-	{
-		t_command *command = (t_command *)current_command->content;
-		int pipefd[2];
-
-		/* Create pipe ONLY if there is a next command */
-		if (current_command->next)
-		{
-			if (pipe(pipefd) == -1)
-			{
-				perror("pipe");
-                exit_status = EXIT_FAILURE;
-                break ;
-			}
-		}
-
-        // create fork
-		pid = 0;
-		if (current_command->next != NULL
-            || !is_builtin(command->path, minishell))
-		    pid = fork();
-        // handle fork error
-		if (pid == -1)
-		{
-			perror("fork");
-			return (EXIT_FAILURE);
-		}
-
-        // handle child process
-		if (pid == CHILD_PID)
-		{
-			/* If we have input from previous pipe */
-			if (prev_read_fd != -1)
-			{
-				dup2(prev_read_fd, STDIN_FILENO);
-				close(prev_read_fd);
-			}
-			/* If we pipe output to next command */
-			if (current_command->next)
-			{
-				dup2(pipefd[WRITE_PIPE], STDOUT_FILENO);
-				close(pipefd[READ_PIPE]);
-				close(pipefd[WRITE_PIPE]);
-			}
-			execute_command(command, minishell); // child process exits here
-		}
-
-        // handle parent process
-        waitpid(pid, &child_exit_status, 0); // wait for child to finish
-		if (prev_read_fd != -1)
-			close(prev_read_fd);
-
-		if (current_command->next)
-		{
-			close(pipefd[WRITE_PIPE]);          /* parent does not write */
-			prev_read_fd = pipefd[READ_PIPE];  /* pass read end forward */
-		}
-		else
-			prev_read_fd = -1;
-
-        // continue executing
-		current_command = current_command->next;
-	}
-	ft_lstclear(&command_list, (void (*)(void *))cmdfree);
-    exit_status = child_exit_status;
-	return (exit_status);
-}
-
-static inline bool	can_execute_command(
-	t_command *command,
-	t_minishell *minishell
-) {
-	if (!is_builtin(command->path, minishell)
-		&& access(command->path, X_OK) != EXIT_SUCCESS)
-		return (false);
-	return (true);
-}
-
-static inline bool	command_exists(
-	t_command *command,
-	t_minishell *minishell
-) {
-	if (!is_builtin(command->path, minishell)
-		&& access(command->path, F_OK) != EXIT_SUCCESS)
-		return (false);
-	return (true);
-}
-
-static u_int8_t execute_command(
-	t_command *command,
-	t_minishell *minishell
-)
-{
-	char			**envp;
-	t_builtin_func	builtin;
-
-	if (is_builtin(command->path, minishell))
-	{
-		builtin = ft_hashmap_get(minishell->builtins, command->path);
-		return (builtin(*command, minishell));
-	}
-	envp = get_envp(minishell);
-	execve(command->path, command->argv, envp);
-    // handle error if execve fails
-	perror("execve");
-	free_envp(envp);
-	exit(EXIT_FAILURE);
-}
-
-// static inline bool	is_piped(
-// 	t_command *command
-// ) {
-// 	return (command->piped_to != NULL || command->piped_from != NULL);
-// }
-
-// static u_int8_t handle_child_process(
-// 	t_command *command,
-// 	t_minishell *minishell
-// ) {
-// 	if (!redirect_pipes(command))
-// 		exit(EXIT_FAILURE);
-// 	execute_command(command, minishell);
-// 	exit(EXIT_FAILURE);
-// }
-
-// static int redirect_pipe(
-// 	int from,
-// 	int to
-// ) {
-// 	if (dup2(from, to) == -1)
-// 		return (-1);
-// 	close(from);
-// 	return (0);
-// }
-
-// static int redirect_pipes(
-// 	t_command *command
-// ) {
-// 	if (command->piped_from &&
-// 		redirect_pipe(command->piped_from->outfile, STDIN_FILENO) == -1)
-// 	{
-// 		perror("dup2");
-// 		return (0);
-// 	}
-// 	if (command->piped_to &&
-// 		redirect_pipe(command->outfile, STDOUT_FILENO) == -1)
-// 	{
-// 		perror("dup2");
-// 		return (0);
-// 	}
-// 	return (1);
-// }
-
-// static void	show_error(
-// 	t_command *command,
-// 	t_minishell *minishell
-// ) {
-// 	if (!command_exists(command, minishell))
-// 	{
-// 		ft_eprintf("minishell: %s: command not found\n", command->argv[0]);
-// 		minishell->exit_status = 127;
-// 	}
-// 	else if (!can_execute_command(command, minishell))
-// 	{
-// 		ft_eprintf("minishell: %s: %s\n", command->path, strerror(errno));
-// 		minishell->exit_status = errno;
-// 	}
-// }
-
-static void	cmdfree(
-	t_command *command
-) {
-	if (command == NULL)
-		return ;
-	cmdfree_argv(command->argv);
-	free(command->path);
-	free(command);
-}
-
-static void	cmdfree_argv(
-	char **argv
-) {
-	size_t	i;
-
-	if (argv == NULL)
-		return ;
-	i = 0;
-	while (argv[i] != NULL)
-	{
-		free(argv[i]);
-		i++;
-	}
-	free(argv);
-}
-
-// static void debug_print_command_info(
-// 	t_command *command
-// ) {
-// 	size_t	i;
-
-// 	if (command == NULL)
-// 	{
-// 		printf("Command is NULL\n");
-// 		return ;
-// 	}
-// 	printf("Command info:\n");
-// 	printf("  Path: %s\n", command->path);
-// 	printf("  Argc: %d\n", command->argc);
-// 	printf("  Argv:\n");
-// 	for (i = 0; i < (size_t)command->argc; i++)
-// 		printf("    arg[%zu]: %s\n", i, command->argv[i]);
-// 	printf("  Infile FD: %d\n", command->infile);
-// 	printf("  Outfile FD: %d\n", command->outfile);
-// 	printf("--------------------------\n");
-// }

include/builtins.h

@@ -17,7 +17,7 @@
 # include "minishell.h"
 # include "core.h"
 
-typedef unsigned char   (*t_builtin_func)(t_command cmd, t_minishell *minishell);
+typedef uint8_t	(*t_builtin_func)(t_command cmd, t_minishell *minishell);
 
 /******************************************************************************/
 /*                                 Functions                                  */
@@ -25,24 +25,36 @@ typedef unsigned char   (*t_builtin_func)(t_command cmd, t_minishell *minishell)
 
 /* builtins.c */
 
-extern u_int8_t	set_builtins(t_minishell *minishell);
+extern uint8_t	set_builtins(t_minishell *minishell);
 
-extern u_int8_t	is_builtin(const char *command_name, t_minishell *minishell);
+extern uint8_t	is_builtin(const char *command_name, t_minishell *minishell);
 
 /* cd.c */
 
-extern u_int8_t	builtin_cd(t_command cmd, t_minishell *minishell);
+extern uint8_t	builtin_cd(t_command cmd, t_minishell *minishell);
 
 /* echo.c */
 
-extern u_int8_t	builtin_echo(t_command cmd, t_minishell *minishell);
+extern uint8_t	builtin_echo(t_command cmd, t_minishell *minishell);
 
 /* exit.c */
 
-extern u_int8_t	builtin_exit(t_command cmd, t_minishell *minishell);
+extern uint8_t	builtin_exit(t_command cmd, t_minishell *minishell);
 
 /* pwd.c */
 
-extern u_int8_t	builtin_pwd(t_command cmd, t_minishell *minishell);
+extern uint8_t	builtin_pwd(t_command cmd, t_minishell *minishell);
+
+/* env.c */
+
+extern uint8_t	builtin_env(t_command cmd, t_minishell *minishell);
+
+/* export.c */
+
+extern uint8_t	builtin_export(t_command cmd, t_minishell *minishell);
+
+/* unset.c */
+
+extern uint8_t	builtin_unset(t_command cmd, t_minishell *minishell);
 
 #endif /* BUILTINS_H */

include/core.h

@@ -6,7 +6,7 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/10/22 19:10:13 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/09 18:45:41 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/13 20:06:08 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -19,9 +19,37 @@
 /*                           Structures & Data Types                          */
 /******************************************************************************/
 
-typedef struct s_minishell	t_minishell;
-typedef struct s_variables	t_variables;
-typedef struct s_command	t_command;
+# define TOKENS_COUNT 5
+
+typedef enum e_token_type
+{
+	TOKEN_WORD,
+	TOKEN_PIPE,
+	TOKEN_REDIRECT_IN,
+	TOKEN_REDIRECT_OUT,
+	TOKEN_APPEND,
+	TOKEN_HEREDOC
+}	t_token_type;
+
+typedef struct s_token
+{
+	t_token_type	type;
+	char			*value;
+}	t_token;
+
+typedef enum e_redirection_type
+{
+	REDIRECT_IN,
+	REDIRECT_OUT,
+	APPEND,
+	HEREDOC
+}	t_redirection_type;
+
+typedef struct s_redirection
+{
+	t_token_type	type;
+	char			*target;
+}	t_redirection;
 
 /**
  * @brief Structure that holds both environment and internal variables
@@ -38,6 +66,12 @@ typedef struct s_variables
 	// char	**internal;
 }	t_variables;
 
+typedef struct s_prompt
+{
+	const char	*ps1;	// primary prompt string
+	const char	*ps2;	// secondary prompt string for multiline input
+}	t_prompt;
+
 /**
  * @brief Main minishell structure containing global state information
  *
@@ -50,6 +84,7 @@ typedef struct s_minishell
 {
 	t_variables	variables;
 	t_hashmap	*builtins;
+	t_prompt	prompt;
 	uint8_t		exit_status;
 	bool		exit;
 }	t_minishell;
@@ -70,6 +105,7 @@ typedef struct s_command
 	char	**argv;
 	char	*path;
 	t_list	*redirections;
+	t_list	*heredocs;
 }	t_command;
 
 /**
@@ -88,12 +124,20 @@ typedef struct s_command
 
 /* minishell.c */
 
-extern int		minishell_init(t_minishell *minishell, char **envp);
+extern void		minishell_init(t_minishell *minishell, char **envp);
 
-extern uint8_t	minishell_run(t_minishell *minishell);
+extern void		minishell_run(t_minishell *minishell);
 
 extern void		minishell_clear(t_minishell *minishell);
 
+extern void		minishell_set_interactive_signals(void);
+
+extern void		minishell_set_execution_signals(void);
+
+extern void		minishell_set_child_signals(void);
+
+extern bool		minishell_consume_sigint(void);
+
 /* environment.c */
 
 extern void		set_envp(char **envp, t_minishell *msh);
@@ -107,4 +151,6 @@ extern void		free_envp(char **envp);
 
 extern char		*get_env(const char *env_name, t_minishell *msh);
 
+extern void		unset_env(const char *env_name, t_minishell *msh);
+
 #endif /* CORE_H */

include/errors.h

@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   errors.h                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/10 22:28:01 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/10 23:24:16 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef ERRORS_H
+# define ERRORS_H
+
+# include "minishell.h"
+# include "core.h"
+# include "parser.h"
+
+extern void	syntax_error_unexpected_token(t_token *token);
+extern void	malloc_error(void);
+
+#endif /* ERRORS_H */

include/executor.h

@@ -19,23 +19,42 @@
 
 # define READ_PIPE 0
 # define WRITE_PIPE 1
-
-typedef struct s_pipeline
-{
-    int prev_read_fd;
-    int pipefd[2];
-}   t_pipeline;
-
-
-/******************************************************************************/
-/*                                 Functions                                  */
-/******************************************************************************/
-
-// executor.c
-
 # define PIPE_ERROR -1
 # define FORK_ERROR -1
 
-extern uint8_t execute(t_list *command, t_minishell *minishell);
+typedef struct s_pipeline
+{
+	int	prev_read_fd;
+	int	pipefd[2];
+}	t_pipeline;
+
+typedef struct s_exec_state
+{
+	uint8_t		exit_status;
+	t_pipeline	pipeline;
+	t_list		*current_command;
+	pid_t		last_child_pid;
+}	t_exec_state;
+
+extern uint8_t	execute(t_list *command, t_minishell *minishell);
+extern uint8_t	executor_execute_command(t_command *cmd, t_minishell *msh);
+extern char		*executor_resolve_command_path(const t_command *cmd,
+					t_minishell *msh);
+extern bool		executor_is_builtin_command(const t_command *cmd,
+					t_minishell *msh);
+extern int		executor_create_pipe_if_needed(t_list *node, t_pipeline *pl);
+extern bool		executor_is_fork_required(t_list *node, const t_pipeline *pl,
+					t_minishell *msh);
+extern void		executor_setup_child_input(t_pipeline *pipeline);
+extern void		executor_setup_child_output(t_list *node, t_pipeline *pl);
+extern void		executor_child_process(t_list *node, t_pipeline *pl,
+					t_minishell *msh);
+extern void		executor_parent_cleanup(t_list *node, t_pipeline *pl);
+extern uint8_t	executor_wait_for_children(pid_t last_child_pid);
+extern void		executor_cmdfree(t_command *command);
+extern bool		executor_apply_redirections(const t_command *command,
+					int *saved_stdin, int *saved_stdout);
+extern void		executor_restore_redirections(int saved_stdin,
+					int saved_stdout);
 
 #endif /* EXECUTOR_H */

include/minishell.h

@@ -6,7 +6,7 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/10/20 16:35:10 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/09 18:38:16 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/13 20:12:25 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,9 +15,11 @@
 
 # include "libft.h"
 # include "ft_printf.h"
+# include "get_next_line.h"
 # include "chardefs.h"
 # include <stdbool.h>
 # include <stdint.h>
+# include <errno.h>
 # include <readline/readline.h>	// readline(3), rl_clear_history(),
 								// rl_on_new_line(), rl_replace_line(),
 								// rl_redisplay()
@@ -40,4 +42,7 @@
 # include <term.h>				// tgetent(3), tgetflag(3), tgetnum(3),
 								// tgetstr(3), tgoto(3), tputs(3)
 
+void	handle_sigint_status(t_minishell *minishell);
+bool	handle_eof(char *line, t_minishell *minishell);
+
 #endif /* MINISHELL_H */

include/parser.h

@@ -6,7 +6,7 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/10/22 19:03:51 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/09 21:19:02 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/12 18:34:11 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -17,44 +17,35 @@
 # include "core.h"
 # include "builtins.h"
 
-# define TOKENS_COUNT 5
-
-typedef enum e_token_type
-{
-    TOKEN_WORD,
-    TOKEN_PIPE,
-    TOKEN_REDIRECT_IN,
-    TOKEN_REDIRECT_OUT,
-    TOKEN_APPEND,
-    TOKEN_HEREDOC
-}	t_token_type;
-
-typedef struct s_token
-{
-    t_token_type	type;
-    char		    *value;
-}   t_token;
-
-typedef enum e_redirection_type
-{
-    REDIRECT_IN,
-    REDIRECT_OUT,
-    APPEND,
-    HEREDOC
-}	t_redirection_type;
-
-typedef struct s_redirection
-{
-    t_redirection_type	type;
-    char			    *target;
-}   t_redirection;
-
 /******************************************************************************/
 /*                                 Functions                                  */
 /******************************************************************************/
 
 // parser.c
 
-extern t_list   *parse(char *line, t_minishell *minishell);
+extern t_list		*parse(char *line, t_minishell *minishell);
+
+// lexer.c
+
+t_token_type		get_token_type(const char *str);
+t_token				*token_new(t_token_type type, char *text);
+t_token				*read_token(t_token_type type, const char *line,
+						size_t *i);
+t_token				*read_word(const char *line, size_t *i);
+
+extern t_list		*lex(const char *line);
+
+extern void			token_clear(t_token *token);
+extern t_command	*command_new(t_list **tokens);
+extern void			command_clear(t_command *command);
+extern void			command_add_tokens(t_command **command, t_list **tokens);
+extern bool			is_pipe(t_token *token);
+extern bool			is_redirection(t_token *token);
+void				redirection_add(t_list **tokens, t_token *token,
+						t_command **command);
+void				words_add(t_list **tokens, t_command **command);
+
+void				expand(t_list **commands, t_minishell *minishell);
+void				redirection_clear(t_redirection *redirection);
 
 #endif /* PARSER_H */

minishell-codex/Makefile

@@ -1,27 +0,0 @@
-NAME := minishell
-CC := cc
-CFLAGS := -Wall -Wextra -Werror -g
-INCLUDES := -Iinclude
-READLINE_LIBS := -lreadline -lncurses
-
-SRCS := $(shell find src -name '*.c')
-OBJS := $(SRCS:src/%.c=build/%.o)
-
-all: $(NAME)
-
-$(NAME): $(OBJS)
-	$(CC) $(CFLAGS) $(OBJS) $(READLINE_LIBS) -o $(NAME)
-
-build/%.o: src/%.c
-	@mkdir -p $(dir $@)
-	$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@
-
-clean:
-	rm -rf build
-
-fclean: clean
-	rm -f $(NAME)
-
-re: fclean all
-
-.PHONY: all clean fclean re

minishell-codex/docs/defensa.md

@@ -1,72 +0,0 @@
-# Minishell - Guion de defensa (version codex)
-
-Este guion esta alineado con la estructura real en `minishell-codex/`.
-
-## 1. Explicacion corta del proyecto
-- Minishell es un interprete de comandos interactivo.
-- Implementa pipes, redirecciones, variables y builtins basicos.
-- Se basa en el flujo: lectura -> lexer -> parser -> expansion -> ejecucion.
-
-## 2. Flujo completo (paso a paso)
-1. `readline()` muestra el prompt y devuelve la linea.
-2. `lex_line()` divide la linea en tokens (`TOK_WORD`, `TOK_PIPE`, redirecciones).
-3. `parse_tokens()` construye la pipeline con comandos y redirecciones.
-4. `expand_pipeline()` aplica expansion de `$VAR` y `$?` respetando comillas.
-5. `execute_pipeline()` resuelve `PATH`, prepara heredocs y ejecuta.
-
-## 3. Estructuras clave
-- `t_token`: tipo y texto de tokens (`minishell-codex/include/minishell.h`).
-- `t_command`: argv, redirecciones, path.
-- `t_pipeline`: lista de comandos.
-- `t_redir`: tipo, target y fd.
-- `t_shell`: estado global (env, exit_status, flags).
-
-## 4. Lexer (por que esta separado)
-- Maneja comillas y metacaracteres sin mezclar con ejecucion.
-- Detecta errores de comillas sin cerrar.
-- Facilita el parseo posterior.
-
-## 5. Parser
-- Convierte tokens en comandos reales.
-- Cada `TOK_PIPE` crea un nuevo comando.
-- Redirecciones se guardan en lista separada (`t_redir`).
-- Valida errores (pipe sin comando, redireccion sin destino).
-
-## 6. Expansion
-- `expand_pipeline()` recorre argv y targets de redireccion.
-- Reglas:
-  - En comilla simple no se expande.
-  - En comilla doble si se expande.
-  - `$?` es el exit status anterior.
-
-## 7. Redirecciones y heredoc
-- `apply_redirections()` abre y hace `dup2()`.
-- `prepare_heredocs()` genera un pipe con el contenido.
-- Heredoc no se mete en el historial.
-
-## 8. Ejecucion y pipes
-- Si hay un solo builtin, se ejecuta en el padre.
-- Si hay pipeline, todos se forkean.
-- Se conectan con `pipe()` y `dup2()`.
-- Se espera a todos, y el exit status es el del ultimo comando.
-
-## 9. Builtins
-- Implementados en `src/builtins/builtins.c`.
-- `echo`, `cd`, `pwd`, `env`, `export`, `unset`, `exit`.
-- `export` valida identificadores y permite `KEY=VALUE`.
-
-## 10. Señales
-- Una sola global: `g_signal`.
-- `ctrl-C`: limpia linea y muestra prompt.
-- `ctrl-\`: se ignora en interactivo.
-- En child se restauran señales por defecto.
-
-## 11. Ejemplos rapidos para demostrar
-- Pipes: `ls | wc -l`
-- Redireccion: `echo hola > out.txt`
-- Heredoc: `cat << EOF` -> texto -> `EOF`
-- Expansion: `echo $HOME`, `echo $?`
-
-## 12. Mensaje final recomendado
-"Separar lexer, parser, expansion y ejecucion me permitio mantener el codigo claro
- y replicar el comportamiento de bash para el minimo requerido por el subject."

minishell-codex/docs/tests_manual.md

@@ -1,59 +0,0 @@
-# Minishell - Checklist de pruebas manuales
-
-Ejecuta en `minishell-codex/`:
-- `make`
-- `./minishell`
-
-## 1. Prompt y salida
-- Iniciar y salir con `ctrl-D`.
-- `exit` debe cerrar el shell con el ultimo status.
-
-## 2. Comandos simples
-- `ls`
-- `pwd`
-- `echo hola`
-
-## 3. Builtins
-- `echo -n hola` (sin salto de linea)
-- `cd /` luego `pwd`
-- `export TEST=42` luego `env | grep TEST`
-- `unset TEST` luego `env | grep TEST` (no debe aparecer)
-- `env` sin argumentos
-- `exit 2`
-
-## 4. Expansion
-- `echo $HOME`
-- `echo $?` despues de un comando que falle (ej: `ls noexiste`)
-- `echo '$HOME'` (no expande)
-- `echo "$HOME"` (si expande)
-
-## 5. Pipes
-- `ls | wc -l`
-- `echo hola | cat`
-- `cat /etc/passwd | grep root | wc -l`
-
-## 6. Redirecciones
-- `echo hola > out.txt` y luego `cat out.txt`
-- `echo 1 >> out.txt` y luego `cat out.txt`
-- `cat < out.txt`
-
-## 7. Heredoc
-- `cat << EOF`
-  - escribir varias lineas
-  - `EOF`
-- Ver que se imprime todo lo escrito.
-
-## 8. Comillas
-- `echo "a b c"` (una sola palabra)
-- `echo 'a b c'` (una sola palabra)
-- `echo "a 'b' c"`
-
-## 9. Errores de parseo
-- `| ls` (no debe ejecutar)
-- `echo hola >` (error)
-- `echo "hola` (comillas sin cerrar)
-
-## 10. Senales
-- `ctrl-C` en prompt: debe limpiar linea y mostrar prompt nuevo.
-- `sleep 5` y `ctrl-C`: debe interrumpir el proceso.
-- `ctrl-\` no debe imprimir nada en prompt interactivo.

minishell-codex/include/minishell.h

@@ -1,136 +0,0 @@
-#ifndef MINISHELL_H
-#define MINISHELL_H
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/wait.h>
-#include <sys/types.h>
-#include <termios.h>
-#include <readline/readline.h>
-#include <readline/history.h>
-
-#define MS_PROMPT "minishell> "
-
-extern int g_signal;
-
-typedef enum e_tokentype
-{
-	TOK_WORD,
-	TOK_PIPE,
-	TOK_REDIR_IN,
-	TOK_REDIR_OUT,
-	TOK_REDIR_APPEND,
-	TOK_HEREDOC
-} t_tokentype;
-
-typedef struct s_token
-{
-	char *text;
-	t_tokentype type;
-	struct s_token *next;
-} t_token;
-
-typedef enum e_redirtype
-{
-	REDIR_IN,
-	REDIR_OUT,
-	REDIR_APPEND,
-	REDIR_HEREDOC
-} t_redirtype;
-
-typedef struct s_redir
-{
-	t_redirtype type;
-	char *target;
-	int fd;
-	struct s_redir *next;
-} t_redir;
-
-typedef struct s_command
-{
-	char **argv;
-	int argc;
-	char *path;
-	t_redir *redirs;
-} t_command;
-
-typedef struct s_pipeline
-{
-	t_command **cmds;
-	size_t count;
-} t_pipeline;
-
-typedef struct s_env
-{
-	char *key;
-	char *value;
-	struct s_env *next;
-} t_env;
-
-typedef struct s_shell
-{
-	t_env *env;
-	int exit_status;
-	int last_status;
-	int exit_requested;
-	int interactive;
-} t_shell;
-
-/* core */
-void ms_init(t_shell *sh, char **envp);
-void ms_loop(t_shell *sh);
-void ms_cleanup(t_shell *sh);
-void ms_setup_signals(t_shell *sh);
-void ms_set_child_signals(void);
-void ms_set_heredoc_signals(void);
-
-/* parser */
-t_token *lex_line(const char *line, int *error);
-void free_tokens(t_token *toks);
-
-t_pipeline *parse_tokens(t_token *toks, int *error);
-void free_pipeline(t_pipeline *p);
-
-int expand_pipeline(t_pipeline *p, t_shell *sh);
-
-/* executor */
-int execute_pipeline(t_pipeline *p, t_shell *sh);
-int prepare_heredocs(t_pipeline *p, t_shell *sh);
-int apply_redirections(t_command *cmd, int *saved_stdin, int *saved_stdout);
-void restore_redirections(int saved_stdin, int saved_stdout);
-char *resolve_path(const char *cmd, t_shell *sh);
-
-/* env */
-void env_init(t_shell *sh, char **envp);
-void env_clear(t_shell *sh);
-char *env_get(t_shell *sh, const char *key);
-int env_set(t_shell *sh, const char *key, const char *value);
-int env_unset(t_shell *sh, const char *key);
-char **env_to_envp(t_shell *sh);
-void env_free_envp(char **envp);
-void env_print(t_shell *sh);
-
-/* builtins */
-int is_builtin(const char *name);
-int exec_builtin(t_command *cmd, t_shell *sh);
-
-/* utils */
-int ms_is_space(int c);
-int ms_is_alpha(int c);
-int ms_is_alnum(int c);
-int ms_is_digit(int c);
-char *ms_strdup(const char *s);
-char *ms_strndup(const char *s, size_t n);
-char *ms_strjoin(const char *a, const char *b);
-char *ms_strjoin3(const char *a, const char *b, const char *c);
-char *ms_substr(const char *s, size_t start, size_t len);
-char **ms_split(const char *s, char delim);
-void ms_free_split(char **sp);
-char *ms_itoa(int n);
-
-#endif

minishell-codex/src/builtins/builtins.c

@@ -1,221 +0,0 @@
-#include "minishell.h"
-
-static int builtin_echo(t_command *cmd, t_shell *sh);
-static int builtin_cd(t_command *cmd, t_shell *sh);
-static int builtin_pwd(t_command *cmd, t_shell *sh);
-static int builtin_env(t_command *cmd, t_shell *sh);
-static int builtin_export(t_command *cmd, t_shell *sh);
-static int builtin_unset(t_command *cmd, t_shell *sh);
-static int builtin_exit(t_command *cmd, t_shell *sh);
-
-int is_builtin(const char *name)
-{
-	if (!name)
-		return 0;
-	return (strcmp(name, "echo") == 0 || strcmp(name, "cd") == 0
-		|| strcmp(name, "pwd") == 0 || strcmp(name, "env") == 0
-		|| strcmp(name, "export") == 0 || strcmp(name, "unset") == 0
-		|| strcmp(name, "exit") == 0);
-}
-
-int exec_builtin(t_command *cmd, t_shell *sh)
-{
-	if (strcmp(cmd->argv[0], "echo") == 0)
-		return builtin_echo(cmd, sh);
-	if (strcmp(cmd->argv[0], "cd") == 0)
-		return builtin_cd(cmd, sh);
-	if (strcmp(cmd->argv[0], "pwd") == 0)
-		return builtin_pwd(cmd, sh);
-	if (strcmp(cmd->argv[0], "env") == 0)
-		return builtin_env(cmd, sh);
-	if (strcmp(cmd->argv[0], "export") == 0)
-		return builtin_export(cmd, sh);
-	if (strcmp(cmd->argv[0], "unset") == 0)
-		return builtin_unset(cmd, sh);
-	if (strcmp(cmd->argv[0], "exit") == 0)
-		return builtin_exit(cmd, sh);
-	return 1;
-}
-
-static int builtin_echo(t_command *cmd, t_shell *sh)
-{
-	int i = 1;
-	int newline = 1;
-
-	(void)sh;
-	while (cmd->argv[i] && cmd->argv[i][0] == '-' && cmd->argv[i][1] == 'n')
-	{
-		int j = 2;
-		while (cmd->argv[i][j] == 'n')
-			j++;
-		if (cmd->argv[i][j] != '\0')
-			break;
-		newline = 0;
-		i++;
-	}
-	while (cmd->argv[i])
-	{
-		printf("%s", cmd->argv[i]);
-		if (cmd->argv[i + 1])
-			printf(" ");
-		i++;
-	}
-	if (newline)
-		printf("\n");
-	return 0;
-}
-
-static int builtin_pwd(t_command *cmd, t_shell *sh)
-{
-	char buf[4096];
-	(void)cmd;
-	(void)sh;
-	if (getcwd(buf, sizeof(buf)))
-		printf("%s\n", buf);
-	return 0;
-}
-
-static int builtin_cd(t_command *cmd, t_shell *sh)
-{
-	char *path;
-	char cwd[4096];
-
-	if (cmd->argc > 2)
-	{
-		fprintf(stderr, "minishell: cd: too many arguments\n");
-		return 1;
-	}
-	if (cmd->argc == 1)
-		path = env_get(sh, "HOME");
-	else
-		path = cmd->argv[1];
-	if (!path)
-	{
-		fprintf(stderr, "minishell: cd: HOME not set\n");
-		return 1;
-	}
-	if (getcwd(cwd, sizeof(cwd)))
-		env_set(sh, "OLDPWD", cwd);
-	if (chdir(path) != 0)
-	{
-		perror("minishell: cd");
-		return 1;
-	}
-	if (getcwd(cwd, sizeof(cwd)))
-		env_set(sh, "PWD", cwd);
-	return 0;
-}
-
-static int builtin_env(t_command *cmd, t_shell *sh)
-{
-	if (cmd->argc > 1)
-	{
-		fprintf(stderr, "minishell: env: too many arguments\n");
-		return 1;
-	}
-	env_print(sh);
-	return 0;
-}
-
-static int valid_identifier(const char *s)
-{
-	int i = 0;
-	if (!s || !ms_is_alpha((unsigned char)s[0]))
-		return 0;
-	while (s[i])
-	{
-		if (!ms_is_alnum((unsigned char)s[i]))
-			return 0;
-		i++;
-	}
-	return 1;
-}
-
-static int builtin_export(t_command *cmd, t_shell *sh)
-{
-	int i = 1;
-	if (cmd->argc == 1)
-	{
-		env_print(sh);
-		return 0;
-	}
-	while (cmd->argv[i])
-	{
-		char *eq = strchr(cmd->argv[i], '=');
-		if (eq)
-		{
-			char *key = ms_strndup(cmd->argv[i], (size_t)(eq - cmd->argv[i]));
-			char *val = ms_strdup(eq + 1);
-			if (!valid_identifier(key))
-				fprintf(stderr, "minishell: export: `%s': not a valid identifier\n", cmd->argv[i]);
-			else
-				env_set(sh, key, val);
-			free(key);
-			free(val);
-		}
-		else
-		{
-			if (!valid_identifier(cmd->argv[i]))
-				fprintf(stderr, "minishell: export: `%s': not a valid identifier\n", cmd->argv[i]);
-			else
-				env_set(sh, cmd->argv[i], "");
-		}
-		i++;
-	}
-	return 0;
-}
-
-static int builtin_unset(t_command *cmd, t_shell *sh)
-{
-	int i = 1;
-	while (cmd->argv[i])
-	{
-		env_unset(sh, cmd->argv[i]);
-		i++;
-	}
-	return 0;
-}
-
-static int builtin_exit(t_command *cmd, t_shell *sh)
-{
-	long code = sh->exit_status;
-	int i = 0;
-
-	if (sh->interactive)
-		printf("exit\n");
-	if (cmd->argc == 1)
-	{
-		sh->exit_requested = 1;
-		sh->exit_status = (int)(code & 0xFF);
-		return sh->exit_status;
-	}
-	if (cmd->argc > 2)
-	{
-		fprintf(stderr, "minishell: exit: too many arguments\n");
-		return 1;
-	}
-	if (cmd->argv[1][i] == '+' || cmd->argv[1][i] == '-')
-		i++;
-	if (cmd->argv[1][i] == '\0')
-	{
-		fprintf(stderr, "minishell: exit: %s: numeric argument required\n", cmd->argv[1]);
-		sh->exit_requested = 1;
-		sh->exit_status = 2;
-		return 2;
-	}
-	while (cmd->argv[1][i])
-	{
-		if (!ms_is_digit((unsigned char)cmd->argv[1][i]))
-		{
-			fprintf(stderr, "minishell: exit: %s: numeric argument required\n", cmd->argv[1]);
-			sh->exit_requested = 1;
-			sh->exit_status = 2;
-			return 2;
-		}
-		i++;
-	}
-	code = strtol(cmd->argv[1], NULL, 10);
-	sh->exit_requested = 1;
-	sh->exit_status = (int)(code & 0xFF);
-	return sh->exit_status;
-}

minishell-codex/src/core/init.c

@@ -1,18 +0,0 @@
-#include "minishell.h"
-
-void ms_init(t_shell *sh, char **envp)
-{
-	memset(sh, 0, sizeof(*sh));
-	sh->interactive = isatty(STDIN_FILENO);
-	sh->exit_status = 0;
-	sh->last_status = 0;
-	sh->exit_requested = 0;
-	env_init(sh, envp);
-	ms_setup_signals(sh);
-}
-
-void ms_cleanup(t_shell *sh)
-{
-	env_clear(sh);
-	rl_clear_history();
-}

minishell-codex/src/core/loop.c

@@ -1,46 +0,0 @@
-#include "minishell.h"
-
-static void handle_line(t_shell *sh, char *line)
-{
-	int error = 0;
-	t_token *toks = NULL;
-	t_pipeline *p = NULL;
-
-	toks = lex_line(line, &error);
-	if (error)
-	{
-		free_tokens(toks);
-		return;
-	}
-	p = parse_tokens(toks, &error);
-	free_tokens(toks);
-	if (error || !p)
-	{
-		free_pipeline(p);
-		return;
-	}
-	if (expand_pipeline(p, sh) != 0)
-	{
-		free_pipeline(p);
-		return;
-	}
-	sh->exit_status = execute_pipeline(p, sh);
-	sh->last_status = sh->exit_status;
-	free_pipeline(p);
-}
-
-void ms_loop(t_shell *sh)
-{
-	char *line;
-
-	while (!sh->exit_requested)
-	{
-		line = readline(MS_PROMPT);
-		if (!line)
-			break;
-		if (line[0] != '\0')
-			add_history(line);
-		handle_line(sh, line);
-		free(line);
-	}
-}

minishell-codex/src/core/signals.c

@@ -1,46 +0,0 @@
-#include "minishell.h"
-
-int g_signal = 0;
-
-static void sigint_handler(int sig)
-{
-	g_signal = sig;
-	write(STDOUT_FILENO, "\n", 1);
-	rl_on_new_line();
-	rl_replace_line("", 0);
-	rl_redisplay();
-}
-
-static void sigquit_handler(int sig)
-{
-	g_signal = sig;
-	(void)sig;
-}
-
-void ms_setup_signals(t_shell *sh)
-{
-	struct sigaction sa_int;
-	struct sigaction sa_quit;
-
-	(void)sh;
-	memset(&sa_int, 0, sizeof(sa_int));
-	memset(&sa_quit, 0, sizeof(sa_quit));
-	sa_int.sa_handler = sigint_handler;
-	sa_quit.sa_handler = sigquit_handler;
-	sigemptyset(&sa_int.sa_mask);
-	sigemptyset(&sa_quit.sa_mask);
-	sigaction(SIGINT, &sa_int, NULL);
-	sigaction(SIGQUIT, &sa_quit, NULL);
-}
-
-void ms_set_child_signals(void)
-{
-	signal(SIGINT, SIG_DFL);
-	signal(SIGQUIT, SIG_DFL);
-}
-
-void ms_set_heredoc_signals(void)
-{
-	signal(SIGINT, SIG_DFL);
-	signal(SIGQUIT, SIG_IGN);
-}

minishell-codex/src/env/env.c

@@ -1,171 +0,0 @@
-#include "minishell.h"
-
-static t_env *env_new(const char *key, const char *value)
-{
-	t_env *n = (t_env *)calloc(1, sizeof(t_env));
-	if (!n)
-		return NULL;
-	n->key = ms_strdup(key);
-	n->value = value ? ms_strdup(value) : ms_strdup("");
-	if (!n->key || !n->value)
-	{
-		free(n->key);
-		free(n->value);
-		free(n);
-		return NULL;
-	}
-	return n;
-}
-
-void env_init(t_shell *sh, char **envp)
-{
-	int i;
-	char *eq;
-
-	sh->env = NULL;
-	if (!envp)
-		return;
-	i = 0;
-	while (envp[i])
-	{
-		eq = strchr(envp[i], '=');
-		if (eq)
-		{
-			char *key = ms_strndup(envp[i], (size_t)(eq - envp[i]));
-			char *val = ms_strdup(eq + 1);
-			env_set(sh, key, val);
-			free(key);
-			free(val);
-		}
-		i++;
-	}
-}
-
-void env_clear(t_shell *sh)
-{
-	t_env *cur = sh->env;
-	t_env *next;
-
-	while (cur)
-	{
-		next = cur->next;
-		free(cur->key);
-		free(cur->value);
-		free(cur);
-		cur = next;
-	}
-	sh->env = NULL;
-}
-
-char *env_get(t_shell *sh, const char *key)
-{
-	t_env *cur = sh->env;
-
-	while (cur)
-	{
-		if (strcmp(cur->key, key) == 0)
-			return cur->value;
-		cur = cur->next;
-	}
-	return NULL;
-}
-
-int env_set(t_shell *sh, const char *key, const char *value)
-{
-	t_env *cur = sh->env;
-	t_env *prev = NULL;
-
-	while (cur)
-	{
-		if (strcmp(cur->key, key) == 0)
-		{
-			char *dup = ms_strdup(value ? value : "");
-			if (!dup)
-				return 1;
-			free(cur->value);
-			cur->value = dup;
-			return 0;
-		}
-		prev = cur;
-		cur = cur->next;
-	}
-	cur = env_new(key, value);
-	if (!cur)
-		return 1;
-	if (prev)
-		prev->next = cur;
-	else
-		sh->env = cur;
-	return 0;
-}
-
-int env_unset(t_shell *sh, const char *key)
-{
-	t_env *cur = sh->env;
-	t_env *prev = NULL;
-
-	while (cur)
-	{
-		if (strcmp(cur->key, key) == 0)
-		{
-			if (prev)
-				prev->next = cur->next;
-			else
-				sh->env = cur->next;
-			free(cur->key);
-			free(cur->value);
-			free(cur);
-			return 0;
-		}
-		prev = cur;
-		cur = cur->next;
-	}
-	return 0;
-}
-
-char **env_to_envp(t_shell *sh)
-{
-	char **envp;
-	int count = 0;
-	t_env *cur = sh->env;
-	int i = 0;
-
-	while (cur)
-	{
-		count++;
-		cur = cur->next;
-	}
-	envp = (char **)calloc((size_t)count + 1, sizeof(char *));
-	if (!envp)
-		return NULL;
-	cur = sh->env;
-	while (cur)
-	{
-		char *kv = ms_strjoin3(cur->key, "=", cur->value);
-		envp[i++] = kv;
-		cur = cur->next;
-	}
-	envp[i] = NULL;
-	return envp;
-}
-
-void env_free_envp(char **envp)
-{
-	int i = 0;
-	if (!envp)
-		return;
-	while (envp[i])
-		free(envp[i++]);
-	free(envp);
-}
-
-void env_print(t_shell *sh)
-{
-	t_env *cur = sh->env;
-	while (cur)
-	{
-		if (cur->value)
-			printf("%s=%s\n", cur->key, cur->value);
-		cur = cur->next;
-	}
-}

minishell-codex/src/executor/exec.c

@@ -1,134 +0,0 @@
-#include "minishell.h"
-
-static int exec_external(t_command *cmd, t_shell *sh)
-{
-	char **envp = env_to_envp(sh);
-	if (!envp)
-		return 1;
-	execve(cmd->path, cmd->argv, envp);
-	perror(cmd->path);
-	env_free_envp(envp);
-	return 126;
-}
-
-static int run_command_child(t_command *cmd, t_shell *sh)
-{
-	int saved_in, saved_out;
-
-	if (apply_redirections(cmd, &saved_in, &saved_out) != 0)
-		return 1;
-	if (is_builtin(cmd->argv[0]))
-		return exec_builtin(cmd, sh);
-	return exec_external(cmd, sh);
-}
-
-static int run_command_parent_builtin(t_command *cmd, t_shell *sh)
-{
-	int saved_in, saved_out;
-	int status;
-
-	if (apply_redirections(cmd, &saved_in, &saved_out) != 0)
-		return 1;
-	status = exec_builtin(cmd, sh);
-	restore_redirections(saved_in, saved_out);
-	return status;
-}
-
-static int setup_pipes(int idx, int count, int pipefd[2])
-{
-	if (idx + 1 >= count)
-		return 0;
-	if (pipe(pipefd) == -1)
-		return 1;
-	return 0;
-}
-
-static void setup_child_fds(int idx, int count, int prev_read, int pipefd[2])
-{
-	if (prev_read != -1)
-	{
-		dup2(prev_read, STDIN_FILENO);
-		close(prev_read);
-	}
-	if (idx + 1 < count)
-	{
-		dup2(pipefd[1], STDOUT_FILENO);
-		close(pipefd[0]);
-		close(pipefd[1]);
-	}
-}
-
-static void close_parent_fds(int idx, int count, int *prev_read, int pipefd[2])
-{
-	if (*prev_read != -1)
-		close(*prev_read);
-	if (idx + 1 < count)
-	{
-		close(pipefd[1]);
-		*prev_read = pipefd[0];
-	}
-	else
-		*prev_read = -1;
-}
-
-int execute_pipeline(t_pipeline *p, t_shell *sh)
-{
-	int i;
-	int prev_read = -1;
-	pid_t *pids;
-	int status = 0;
-
-	if (!p || p->count == 0)
-		return 0;
-	if (prepare_heredocs(p, sh) != 0)
-		return sh->exit_status;
-	for (size_t k = 0; k < p->count; k++)
-	{
-		if (!p->cmds[k]->argv || !p->cmds[k]->argv[0])
-			return 1;
-		free(p->cmds[k]->path);
-		p->cmds[k]->path = resolve_path(p->cmds[k]->argv[0], sh);
-	}
-	if (p->count == 1 && is_builtin(p->cmds[0]->argv[0]))
-		return run_command_parent_builtin(p->cmds[0], sh);
-	pids = (pid_t *)calloc(p->count, sizeof(pid_t));
-	if (!pids)
-		return 1;
-	for (i = 0; i < (int)p->count; i++)
-	{
-		int pipefd[2] = {-1, -1};
-		if (setup_pipes(i, (int)p->count, pipefd))
-			break;
-		pids[i] = fork();
-		if (pids[i] == 0)
-		{
-			ms_set_child_signals();
-			setup_child_fds(i, (int)p->count, prev_read, pipefd);
-			if (!p->cmds[i]->path)
-			{
-				fprintf(stderr, "minishell: %s: command not found\n", p->cmds[i]->argv[0]);
-				exit(127);
-			}
-			status = run_command_child(p->cmds[i], sh);
-			exit(status);
-		}
-		close_parent_fds(i, (int)p->count, &prev_read, pipefd);
-	}
-	for (i = 0; i < (int)p->count; i++)
-	{
-		int wstatus = 0;
-		if (pids[i] > 0)
-		{
-			waitpid(pids[i], &wstatus, 0);
-			if (i == (int)p->count - 1)
-			{
-				if (WIFEXITED(wstatus))
-					status = WEXITSTATUS(wstatus);
-				else if (WIFSIGNALED(wstatus))
-					status = 128 + WTERMSIG(wstatus);
-			}
-		}
-	}
-	free(pids);
-	return status;
-}

minishell-codex/src/executor/path.c

@@ -1,41 +0,0 @@
-#include "minishell.h"
-
-static int has_slash(const char *s)
-{
-	return (s && strchr(s, '/'));
-}
-
-char *resolve_path(const char *cmd, t_shell *sh)
-{
-	char *path_env;
-	char **parts;
-	char *candidate;
-	int i;
-
-	if (!cmd)
-		return NULL;
-	if (is_builtin(cmd))
-		return ms_strdup(cmd);
-	if (has_slash(cmd))
-		return ms_strdup(cmd);
-	path_env = env_get(sh, "PATH");
-	if (!path_env)
-		return NULL;
-	parts = ms_split(path_env, ':');
-	if (!parts)
-		return NULL;
-	i = 0;
-	while (parts[i])
-	{
-		candidate = ms_strjoin3(parts[i], "/", cmd);
-		if (candidate && access(candidate, X_OK) == 0)
-		{
-			ms_free_split(parts);
-			return candidate;
-		}
-		free(candidate);
-		i++;
-	}
-	ms_free_split(parts);
-	return NULL;
-}

minishell-codex/src/executor/redir.c

@@ -1,108 +0,0 @@
-#include "minishell.h"
-
-static int open_redir(t_redir *r)
-{
-	if (r->type == REDIR_IN)
-		return open(r->target, O_RDONLY);
-	if (r->type == REDIR_OUT)
-		return open(r->target, O_WRONLY | O_CREAT | O_TRUNC, 0644);
-	if (r->type == REDIR_APPEND)
-		return open(r->target, O_WRONLY | O_CREAT | O_APPEND, 0644);
-	return -1;
-}
-
-int prepare_heredocs(t_pipeline *p, t_shell *sh)
-{
-	size_t i;
-
-	g_signal = 0;
-	for (i = 0; i < p->count; i++)
-	{
-		t_redir *r = p->cmds[i]->redirs;
-		while (r)
-		{
-			if (r->type == REDIR_HEREDOC)
-			{
-				int fds[2];
-				char *line;
-				ms_set_heredoc_signals();
-				if (pipe(fds) == -1)
-					return 1;
-				while (1)
-				{
-					line = readline("> ");
-					if (!line)
-						break;
-					if (strcmp(line, r->target) == 0)
-					{
-						free(line);
-						break;
-					}
-					write(fds[1], line, strlen(line));
-					write(fds[1], "\n", 1);
-					free(line);
-				}
-				close(fds[1]);
-				r->fd = fds[0];
-				ms_setup_signals(sh);
-				if (g_signal == SIGINT)
-				{
-					sh->exit_status = 130;
-					return 1;
-				}
-			}
-			r = r->next;
-		}
-	}
-	return 0;
-}
-
-int apply_redirections(t_command *cmd, int *saved_stdin, int *saved_stdout)
-{
-	t_redir *r = cmd->redirs;
-	*saved_stdin = -1;
-	*saved_stdout = -1;
-	while (r)
-	{
-		int fd = -1;
-		if (r->type == REDIR_HEREDOC)
-			fd = r->fd;
-		else
-			fd = open_redir(r);
-		if (fd == -1)
-		{
-			perror(r->target);
-			return 1;
-		}
-		if (r->type == REDIR_IN || r->type == REDIR_HEREDOC)
-		{
-			if (*saved_stdin == -1)
-				*saved_stdin = dup(STDIN_FILENO);
-			dup2(fd, STDIN_FILENO);
-		}
-		else
-		{
-			if (*saved_stdout == -1)
-				*saved_stdout = dup(STDOUT_FILENO);
-			dup2(fd, STDOUT_FILENO);
-		}
-		if (r->type != REDIR_HEREDOC)
-			close(fd);
-		r = r->next;
-	}
-	return 0;
-}
-
-void restore_redirections(int saved_stdin, int saved_stdout)
-{
-	if (saved_stdin != -1)
-	{
-		dup2(saved_stdin, STDIN_FILENO);
-		close(saved_stdin);
-	}
-	if (saved_stdout != -1)
-	{
-		dup2(saved_stdout, STDOUT_FILENO);
-		close(saved_stdout);
-	}
-}

minishell-codex/src/main.c

@@ -1,17 +0,0 @@
-#include "minishell.h"
-
-int main(int argc, char **argv, char **envp)
-{
-	t_shell sh;
-
-	(void)argv;
-	if (argc != 1)
-	{
-		fprintf(stderr, "Usage: ./minishell\n");
-		return 1;
-	}
-	ms_init(&sh, envp);
-	ms_loop(&sh);
-	ms_cleanup(&sh);
-	return sh.exit_status;
-}

minishell-codex/src/parser/expand.c

@@ -1,113 +0,0 @@
-#include "minishell.h"
-
-static void buf_append(char **buf, size_t *len, size_t *cap, const char *s)
-{
-	size_t slen;
-	char *newbuf;
-
-	if (!s)
-		return;
-	slen = strlen(s);
-	if (*len + slen + 1 > *cap)
-	{
-		*cap = (*len + slen + 1) * 2;
-		newbuf = (char *)realloc(*buf, *cap);
-		if (!newbuf)
-			return;
-		*buf = newbuf;
-	}
-	memcpy(*buf + *len, s, slen);
-	*len += slen;
-	(*buf)[*len] = '\0';
-}
-
-static void buf_append_char(char **buf, size_t *len, size_t *cap, char c)
-{
-	char tmp[2];
-	tmp[0] = c;
-	tmp[1] = '\0';
-	buf_append(buf, len, cap, tmp);
-}
-
-static char *expand_word(const char *word, t_shell *sh)
-{
-	int in_single = 0;
-	int in_double = 0;
-	size_t i = 0;
-	char *out = NULL;
-	size_t len = 0, cap = 0;
-
-	while (word && word[i])
-	{
-		if (word[i] == '\'' && !in_double)
-		{
-			in_single = !in_single;
-			i++;
-			continue;
-		}
-		if (word[i] == '"' && !in_single)
-		{
-			in_double = !in_double;
-			i++;
-			continue;
-		}
-		if (word[i] == '$' && !in_single)
-		{
-			if (word[i + 1] == '?')
-			{
-				char *v = ms_itoa(sh->last_status);
-				buf_append(&out, &len, &cap, v);
-				free(v);
-				i += 2;
-				continue;
-			}
-			if (ms_is_alpha((unsigned char)word[i + 1]))
-			{
-				size_t j = i + 1;
-				while (word[j] && ms_is_alnum((unsigned char)word[j]))
-					j++;
-				char *name = ms_strndup(word + i + 1, j - (i + 1));
-				char *val = env_get(sh, name);
-				buf_append(&out, &len, &cap, val ? val : "");
-				free(name);
-				i = j;
-				continue;
-			}
-		}
-		buf_append_char(&out, &len, &cap, word[i]);
-		i++;
-	}
-	if (!out)
-		out = ms_strdup("");
-	return out;
-}
-
-int expand_pipeline(t_pipeline *p, t_shell *sh)
-{
-	size_t i;
-	int j;
-	for (i = 0; i < p->count; i++)
-	{
-		for (j = 0; p->cmds[i]->argv && p->cmds[i]->argv[j]; j++)
-		{
-			char *neww = expand_word(p->cmds[i]->argv[j], sh);
-			free(p->cmds[i]->argv[j]);
-			p->cmds[i]->argv[j] = neww;
-		}
-		if (p->cmds[i]->redirs)
-		{
-			t_redir *r = p->cmds[i]->redirs;
-			while (r)
-			{
-				if (r->target)
-				{
-					char *nt = expand_word(r->target, sh);
-					free(r->target);
-					r->target = nt;
-				}
-				r = r->next;
-			}
-		}
-	}
-	return 0;
-}

minishell-codex/src/parser/lexer.c

@@ -1,131 +0,0 @@
-#include "minishell.h"
-
-static t_token *token_new(t_tokentype type, const char *text, size_t len)
-{
-	t_token *t = (t_token *)calloc(1, sizeof(t_token));
-	if (!t)
-		return NULL;
-	t->type = type;
-	if (text)
-		t->text = ms_strndup(text, len);
-	return t;
-}
-
-static void token_add(t_token **head, t_token *new)
-{
-	t_token *cur;
-	if (!new)
-		return;
-	if (!*head)
-	{
-		*head = new;
-		return;
-	}
-	cur = *head;
-	while (cur->next)
-		cur = cur->next;
-	cur->next = new;
-}
-
-void free_tokens(t_token *toks)
-{
-	t_token *n;
-	while (toks)
-	{
-		n = toks->next;
-		free(toks->text);
-		free(toks);
-		toks = n;
-	}
-}
-
-static int is_meta(char c)
-{
-	return (c == '|' || c == '<' || c == '>');
-}
-
-static int read_word(const char *line, size_t *i, t_token **out)
-{
-	size_t start = *i;
-	int in_single = 0;
-	int in_double = 0;
-
-	while (line[*i])
-	{
-		if (line[*i] == '\'' && !in_double)
-			in_single = !in_single;
-		else if (line[*i] == '"' && !in_single)
-			in_double = !in_double;
-		else if (!in_single && !in_double)
-		{
-			if (ms_is_space(line[*i]) || is_meta(line[*i]))
-				break;
-		}
-		(*i)++;
-	}
-	if (in_single || in_double)
-		return 1;
-	*out = token_new(TOK_WORD, line + start, *i - start);
-	return 0;
-}
-
-t_token *lex_line(const char *line, int *error)
-{
-	t_token *toks = NULL;
-	size_t i = 0;
-
-	*error = 0;
-	while (line[i])
-	{
-		if (ms_is_space(line[i]))
-		{
-			i++;
-			continue;
-		}
-		if (line[i] == '|')
-		{
-			token_add(&toks, token_new(TOK_PIPE, "|", 1));
-			i++;
-			continue;
-		}
-		if (line[i] == '<')
-		{
-			if (line[i + 1] == '<')
-			{
-				token_add(&toks, token_new(TOK_HEREDOC, "<<", 2));
-				i += 2;
-			}
-			else
-			{
-				token_add(&toks, token_new(TOK_REDIR_IN, "<", 1));
-				i++;
-			}
-			continue;
-		}
-		if (line[i] == '>')
-		{
-			if (line[i + 1] == '>')
-			{
-				token_add(&toks, token_new(TOK_REDIR_APPEND, ">>", 2));
-				i += 2;
-			}
-			else
-			{
-				token_add(&toks, token_new(TOK_REDIR_OUT, ">", 1));
-				i++;
-			}
-			continue;
-		}
-		{
-			t_token *w = NULL;
-			if (read_word(line, &i, &w))
-			{
-				*error = 1;
-				free_tokens(toks);
-				return NULL;
-			}
-			token_add(&toks, w);
-		}
-	}
-	return toks;
-}

minishell-codex/src/parser/parser.c

@@ -1,175 +0,0 @@
-#include "minishell.h"
-
-static t_command *command_new(void)
-{
-	t_command *cmd = (t_command *)calloc(1, sizeof(t_command));
-	return cmd;
-}
-
-static void command_add_arg(t_command *cmd, const char *text)
-{
-	char **new_argv;
-	int i;
-
-	if (!cmd || !text)
-		return;
-	i = cmd->argc;
-	new_argv = (char **)calloc((size_t)i + 2, sizeof(char *));
-	if (!new_argv)
-		return;
-	for (int j = 0; j < i; j++)
-		new_argv[j] = cmd->argv[j];
-	new_argv[i] = ms_strdup(text);
-	new_argv[i + 1] = NULL;
-	free(cmd->argv);
-	cmd->argv = new_argv;
-	cmd->argc += 1;
-}
-
-static void command_add_redir(t_command *cmd, t_redirtype type, const char *target)
-{
-	t_redir *r = (t_redir *)calloc(1, sizeof(t_redir));
-	t_redir *cur;
-	if (!r)
-		return;
-	r->type = type;
-	r->target = ms_strdup(target);
-	r->fd = -1;
-	r->next = NULL;
-	if (!cmd->redirs)
-	{
-		cmd->redirs = r;
-		return;
-	}
-	cur = cmd->redirs;
-	while (cur->next)
-		cur = cur->next;
-	cur->next = r;
-}
-
-static void free_redirs(t_redir *r)
-{
-	t_redir *n;
-	while (r)
-	{
-		n = r->next;
-		if (r->fd != -1)
-			close(r->fd);
-		free(r->target);
-		free(r);
-		r = n;
-	}
-}
-
-void free_pipeline(t_pipeline *p)
-{
-	size_t i;
-	if (!p)
-		return;
-	for (i = 0; i < p->count; i++)
-	{
-		if (p->cmds[i])
-		{
-			for (int j = 0; p->cmds[i]->argv && p->cmds[i]->argv[j]; j++)
-				free(p->cmds[i]->argv[j]);
-			free(p->cmds[i]->argv);
-			free(p->cmds[i]->path);
-			free_redirs(p->cmds[i]->redirs);
-			free(p->cmds[i]);
-		}
-	}
-	free(p->cmds);
-	free(p);
-}
-
-static int pipeline_add_cmd(t_pipeline *p, t_command *cmd)
-{
-	t_command **new_cmds;
-	size_t i;
-
-	new_cmds = (t_command **)calloc(p->count + 1, sizeof(t_command *));
-	if (!new_cmds)
-		return 1;
-	for (i = 0; i < p->count; i++)
-		new_cmds[i] = p->cmds[i];
-	new_cmds[p->count] = cmd;
-	free(p->cmds);
-	p->cmds = new_cmds;
-	p->count += 1;
-	return 0;
-}
-
-t_pipeline *parse_tokens(t_token *toks, int *error)
-{
-	t_pipeline *p;
-	t_command *cmd;
-	t_token *cur;
-
-	*error = 0;
-	p = (t_pipeline *)calloc(1, sizeof(t_pipeline));
-	if (!p)
-		return NULL;
-	cmd = command_new();
-	if (!cmd)
-	{
-		free(p);
-		return NULL;
-	}
-	cur = toks;
-	while (cur)
-	{
-		if (cur->type == TOK_PIPE)
-		{
-			if (cmd->argc == 0)
-			{
-				*error = 1;
-				free_pipeline(p);
-				free(cmd);
-				return NULL;
-			}
-			pipeline_add_cmd(p, cmd);
-			cmd = command_new();
-			if (!cmd)
-			{
-				*error = 1;
-				free_pipeline(p);
-				return NULL;
-			}
-			cur = cur->next;
-			continue;
-		}
-		if (cur->type == TOK_REDIR_IN || cur->type == TOK_REDIR_OUT
-			|| cur->type == TOK_REDIR_APPEND || cur->type == TOK_HEREDOC)
-		{
-			if (!cur->next || cur->next->type != TOK_WORD)
-			{
-				*error = 1;
-				free_pipeline(p);
-				free(cmd);
-				return NULL;
-			}
-			if (cur->type == TOK_REDIR_IN)
-				command_add_redir(cmd, REDIR_IN, cur->next->text);
-			else if (cur->type == TOK_REDIR_OUT)
-				command_add_redir(cmd, REDIR_OUT, cur->next->text);
-			else if (cur->type == TOK_REDIR_APPEND)
-				command_add_redir(cmd, REDIR_APPEND, cur->next->text);
-			else if (cur->type == TOK_HEREDOC)
-				command_add_redir(cmd, REDIR_HEREDOC, cur->next->text);
-			cur = cur->next->next;
-			continue;
-		}
-		if (cur->type == TOK_WORD)
-			command_add_arg(cmd, cur->text);
-		cur = cur->next;
-	}
-	if (cmd->argc == 0)
-	{
-		*error = 1;
-		free_pipeline(p);
-		free(cmd);
-		return NULL;
-	}
-	pipeline_add_cmd(p, cmd);
-	return p;
-}

minishell-codex/src/utils/char_utils.c

@@ -1,6 +0,0 @@
-#include "minishell.h"
-
-int ms_is_space(int c) { return (c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\v' || c == '\f'); }
-int ms_is_alpha(int c) { return ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || c == '_'); }
-int ms_is_digit(int c) { return (c >= '0' && c <= '9'); }
-int ms_is_alnum(int c) { return (ms_is_alpha(c) || ms_is_digit(c)); }

minishell-codex/src/utils/split_utils.c

@@ -1,67 +0,0 @@
-#include "minishell.h"
-
-static size_t count_parts(const char *s, char delim)
-{
-	size_t count = 0;
-	int in = 0;
-	while (*s)
-	{
-		if (*s == delim)
-			in = 0;
-		else if (!in)
-		{
-			in = 1;
-			count++;
-		}
-		s++;
-	}
-	return count;
-}
-
-char **ms_split(const char *s, char delim)
-{
-	char **out;
-	size_t parts;
-	size_t i = 0;
-	size_t start = 0;
-	size_t len = 0;
-	int in = 0;
-
-	if (!s)
-		return NULL;
-	parts = count_parts(s, delim);
-	out = (char **)calloc(parts + 1, sizeof(char *));
-	if (!out)
-		return NULL;
-	while (s[i])
-	{
-		if (s[i] == delim)
-		{
-			if (in)
-			{
-				out[len++] = ms_strndup(s + start, i - start);
-				in = 0;
-			}
-		}
-		else if (!in)
-		{
-			in = 1;
-			start = i;
-		}
-		i++;
-	}
-	if (in)
-		out[len++] = ms_strndup(s + start, i - start);
-	out[len] = NULL;
-	return out;
-}
-
-void ms_free_split(char **sp)
-{
-	size_t i = 0;
-	if (!sp)
-		return;
-	while (sp[i])
-		free(sp[i++]);
-	free(sp);
-}

minishell-codex/src/utils/str_utils.c

@@ -1,100 +0,0 @@
-#include "minishell.h"
-
-char *ms_strdup(const char *s)
-{
-	char *out;
-	size_t len;
-
-	if (!s)
-		return NULL;
-	len = strlen(s);
-	out = (char *)malloc(len + 1);
-	if (!out)
-		return NULL;
-	memcpy(out, s, len);
-	out[len] = '\0';
-	return out;
-}
-
-char *ms_strndup(const char *s, size_t n)
-{
-	char *out;
-	if (!s)
-		return NULL;
-	out = (char *)malloc(n + 1);
-	if (!out)
-		return NULL;
-	memcpy(out, s, n);
-	out[n] = '\0';
-	return out;
-}
-
-char *ms_substr(const char *s, size_t start, size_t len)
-{
-	size_t slen;
-	if (!s)
-		return NULL;
-	slen = strlen(s);
-	if (start >= slen)
-		return ms_strdup("");
-	if (start + len > slen)
-		len = slen - start;
-	return ms_strndup(s + start, len);
-}
-
-char *ms_strjoin(const char *a, const char *b)
-{
-	size_t la;
-	size_t lb;
-	char *out;
-
-	if (!a || !b)
-		return NULL;
-	la = strlen(a);
-	lb = strlen(b);
-	out = (char *)malloc(la + lb + 1);
-	if (!out)
-		return NULL;
-	memcpy(out, a, la);
-	memcpy(out + la, b, lb);
-	out[la + lb] = '\0';
-	return out;
-}
-
-char *ms_strjoin3(const char *a, const char *b, const char *c)
-{
-	char *ab;
-	char *abc;
-
-	ab = ms_strjoin(a, b);
-	if (!ab)
-		return NULL;
-	abc = ms_strjoin(ab, c);
-	free(ab);
-	return abc;
-}
-
-char *ms_itoa(int n)
-{
-	char buf[32];
-	int i;
-	int neg;
-	long nb;
-
-	nb = n;
-	neg = (nb < 0);
-	if (neg)
-		nb = -nb;
-	i = 30;
-	buf[31] = '\0';
-	if (nb == 0)
-		buf[i--] = '0';
-	while (nb > 0)
-	{
-		buf[i--] = (char)('0' + (nb % 10));
-		nb /= 10;
-	}
-	if (neg)
-		buf[i--] = '-';
-	return ms_strdup(&buf[i + 1]);
-}

src/builtins/builtins.c

@@ -12,23 +12,53 @@
 
 #include "builtins.h"
 
-u_int8_t	set_builtins(
-	t_minishell *minishell
-) {
-	minishell->builtins
-		= ft_hashmap_new(4, ft_hashmap_hashstr, ft_hashmap_strcmp);
-	if (minishell->builtins == NULL)
+static uint8_t	register_builtin(
+	t_minishell *minishell,
+	const char *name,
+	t_builtin_func builtin
+)
+{
+	char	*key;
+
+	key = ft_strdup(name);
+	if (key == NULL)
 		return (0);
-	ft_hashmap_put(minishell->builtins, ft_strdup("cd"), builtin_cd);
-	ft_hashmap_put(minishell->builtins, ft_strdup("echo"), builtin_echo);
-	ft_hashmap_put(minishell->builtins, ft_strdup("exit"), builtin_exit);
-	ft_hashmap_put(minishell->builtins, ft_strdup("pwd"), builtin_pwd);
+	ft_hashmap_put(minishell->builtins, key, builtin);
+	if (!ft_hashmap_contains_key(minishell->builtins, name))
+	{
+		free(key);
+		return (0);
+	}
 	return (1);
 }
 
-u_int8_t	is_builtin(
+uint8_t	set_builtins(
+	t_minishell *minishell
+) {
+	minishell->builtins
+		= ft_hashmap_new(7, ft_hashmap_hashstr, ft_hashmap_strcmp);
+	if (minishell->builtins == NULL)
+		return (0);
+	if (!register_builtin(minishell, "cd", builtin_cd)
+		|| !register_builtin(minishell, "echo", builtin_echo)
+		|| !register_builtin(minishell, "env", builtin_env)
+		|| !register_builtin(minishell, "exit", builtin_exit)
+		|| !register_builtin(minishell, "export", builtin_export)
+		|| !register_builtin(minishell, "pwd", builtin_pwd)
+		|| !register_builtin(minishell, "unset", builtin_unset))
+	{
+		ft_hashmap_clear_keys(&minishell->builtins);
+		return (0);
+	}
+	return (1);
+}
+
+uint8_t	is_builtin(
 	const char *command_name,
 	t_minishell *minishell
 ) {
+	if (command_name == NULL || minishell == NULL
+		|| minishell->builtins == NULL)
+		return (0);
 	return (ft_hashmap_contains_key(minishell->builtins, command_name));
 }

src/builtins/cd/cd.c

@@ -12,43 +12,104 @@
 
 #include "builtins.h"
 
-static u_int8_t	handle_error(t_command cmd, t_minishell *msh, char *path);
+static uint8_t	handle_error(void);
+static void		update_pwd_vars(t_minishell *msh, char *oldpwd);
+static char		*get_path_from_env(
+					t_minishell *msh,
+					const char *env_name,
+					const char *error,
+					uint8_t *status
+					);
+static char		*resolve_cd_path(
+					t_command cmd,
+					t_minishell *msh,
+					uint8_t *status
+					);
 
-u_int8_t	builtin_cd(
+uint8_t	builtin_cd(
 	t_command cmd,
 	t_minishell *msh
 ){
 	char	*path;
+	char	*oldpwd;
+	uint8_t	status;
+	bool	show_pwd;
 
-	if (cmd.argc > 2)
-	{
-		ft_eputendl("minishell: cd: too many arguments");
-		return (2);
-	}
-	else if (cmd.argc == 1)
-		path = get_env("HOME", msh);
-	else
-		path = cmd.argv[1];
+	path = resolve_cd_path(cmd, msh, &status);
+	if (status != EXIT_SUCCESS)
+		return (status);
+	show_pwd = (cmd.argc == 2 && ft_strcmp(cmd.argv[1], "-") == 0);
+	oldpwd = getcwd(NULL, 0);
 	if (chdir(path) == -1)
-		return (handle_error(cmd, msh, path));
+	{
+		free(oldpwd);
+		return (handle_error());
+	}
+	update_pwd_vars(msh, oldpwd);
+	if (show_pwd && get_env("PWD", msh) != NULL)
+		ft_putendl(get_env("PWD", msh));
+	free(oldpwd);
 	return (EXIT_SUCCESS);
 }
 
-static u_int8_t	handle_error(
+static uint8_t	handle_error(void)
+{
+	perror("minishell: cd");
+	return (EXIT_FAILURE);
+}
+
+static void	update_pwd_vars(
+	t_minishell *msh,
+	char *oldpwd
+){
+	char	*newpwd;
+
+	if (oldpwd != NULL)
+		set_env("OLDPWD", oldpwd, msh);
+	newpwd = getcwd(NULL, 0);
+	if (newpwd != NULL)
+	{
+		set_env("PWD", newpwd, msh);
+		free(newpwd);
+	}
+}
+
+static char	*resolve_cd_path(
 	t_command cmd,
 	t_minishell *msh,
-	char *path
+	uint8_t *status
 ){
-	u_int8_t	exit_code;
-
-	(void)msh;
-	exit_code = 0;
-	if (access(path, F_OK) != -1)
-		// No such file or directory
-		exit_code = 1;
-	else if (access(path, X_OK) == -1)
-		// Permission denied
-		exit_code = 2;
-	perror(cmd.argv[0]);
-	return (exit_code);
+	if (cmd.argc > 2)
+	{
+		ft_eputendl("minishell: cd: too many arguments");
+		*status = EXIT_FAILURE;
+		return (NULL);
+	}
+	if (cmd.argc == 2 && ft_strcmp(cmd.argv[1], "-") == 0)
+		return (get_path_from_env(msh, "OLDPWD",
+				"minishell: cd: OLDPWD not set", status));
+	if (cmd.argc == 1)
+		return (get_path_from_env(msh, "HOME",
+				"minishell: cd: HOME not set", status));
+	*status = EXIT_SUCCESS;
+	return (cmd.argv[1]);
+}
+
+static char	*get_path_from_env(
+	t_minishell *msh,
+	const char *env_name,
+	const char *error,
+	uint8_t *status
+){
+	char	*path;
+
+	path = get_env(env_name, msh);
+	if (path == NULL)
+	{
+		ft_eputendl((char *)error);
+		*status = EXIT_FAILURE;
+		return (NULL);
+	}
+	*status = EXIT_SUCCESS;
+	return (path);
 }

src/builtins/echo/echo.c

@@ -13,7 +13,7 @@
 #include "builtins.h"
 #include "echo_def.h"
 
-u_int8_t	builtin_echo(
+uint8_t	builtin_echo(
 	t_command cmd,
 	t_minishell *msh
 ){

src/builtins/echo/echo_def.c

@@ -13,7 +13,7 @@
 #include "echo_def.h"
 
 static void		assign_flags(t_args *args, t_command cmd, size_t *i);
-static u_int8_t	is_valid_flag(t_args *args, char *flag);
+static uint8_t	is_valid_flag(t_args *args, char *flag);
 
 static void	assign_default_flags(
 	t_args *args
@@ -51,7 +51,7 @@ static void	assign_flags(
 	}
 }
 
-static u_int8_t	is_valid_flag(
+static uint8_t	is_valid_flag(
 	t_args *args,
 	char *flag
 ){

src/builtins/env/env.c

@@ -0,0 +1,58 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   env.c                                              :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/09 22:05:00 by codex             #+#    #+#             */
+/*   Updated: 2026/02/09 22:05:00 by codex            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "builtins.h"
+
+static void	print_entry(t_map_entry *entry);
+static void	print_env(t_minishell *msh);
+
+uint8_t	builtin_env(
+	t_command cmd,
+	t_minishell *msh
+)
+{
+	if (cmd.argc > 1)
+	{
+		ft_eputendl("minishell: env: too many arguments");
+		return (EXIT_FAILURE);
+	}
+	print_env(msh);
+	return (EXIT_SUCCESS);
+}
+
+static void	print_entry(
+	t_map_entry *entry
+)
+{
+	ft_putstr((char *)entry->key);
+	ft_putchar('=');
+	if (entry->value != NULL)
+		ft_putstr((char *)entry->value);
+	ft_putchar('\n');
+}
+
+static void	print_env(
+	t_minishell *msh
+)
+{
+	t_list	*entries;
+	t_list	*current;
+
+	entries = ft_hashmap_entries(msh->variables.environment);
+	current = entries;
+	while (current != NULL)
+	{
+		print_entry((t_map_entry *)current->content);
+		current = current->next;
+	}
+	ft_lstclear_nodes(&entries);
+}

src/builtins/exit/exit.c

@@ -11,36 +11,45 @@
 /* ************************************************************************** */
 
 #include "builtins.h"
-#include <stdint.h>
+
+static bool	exit_arg_is_invalid(const char *arg)
+{
+	if (arg == NULL)
+		return (true);
+	if ((*arg == '+' || *arg == '-') && arg[1] == '\0')
+		return (true);
+	if (!ft_strisnum(arg))
+		return (true);
+	return (false);
+}
 
 uint8_t	builtin_exit(
 	t_command cmd,
 	t_minishell *msh
 )
 {
-	uint8_t	exit_status;
-	
-	ft_eputendl("exit");
+	if (isatty(STDIN_FILENO))
+		ft_eputendl("exit");
 	if (cmd.argc == 1)
-		exit_status = msh->exit_status;
-	else if (!ft_strisnum(cmd.argv[1]))
 	{
-		ft_eprintf(
-			"minishell: exit: %s: numeric argument required\n",
+		msh->exit = 1;
+		return (msh->exit_status);
+	}
+	if (exit_arg_is_invalid(cmd.argv[1]))
+	{
+		ft_eprintf("minishell: exit: %s: numeric argument required\n",
 			cmd.argv[1]);
-		return (2);
+		msh->exit = 1;
+		msh->exit_status = 2;
+		return (msh->exit_status);
 	}
-	else if (cmd.argc > 2)
+	if (cmd.argc > 2)
 	{
-		ft_eputendl("exit: too many arguments");
-		return (2);
+		ft_eputendl("minishell: exit: too many arguments");
+		msh->exit_status = EXIT_FAILURE;
+		return (msh->exit_status);
 	}
-	else
-		exit_status = (uint8_t)ft_atol(cmd.argv[1]);
-
-	printf("builtin_exit: exit_status=%d\n", exit_status); // Debug print
-
 	msh->exit = 1;
-	msh->exit_status = exit_status;
-	return (exit_status);
+	msh->exit_status = (uint8_t)ft_atol(cmd.argv[1]);
+	return (msh->exit_status);
 }

src/builtins/export/export.c

@@ -0,0 +1,79 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   export.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/09 22:05:00 by codex             #+#    #+#             */
+/*   Updated: 2026/02/09 22:05:00 by codex            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "builtins.h"
+
+static uint8_t	is_valid_identifier(const char *arg, size_t name_len);
+static uint8_t	export_one(char *arg, t_minishell *msh);
+
+uint8_t	builtin_export(
+	t_command cmd,
+	t_minishell *msh
+)
+{
+	uint8_t	status;
+	size_t	i;
+
+	if (cmd.argc == 1)
+		return (builtin_env(cmd, msh));
+	status = EXIT_SUCCESS;
+	i = 0;
+	while (cmd.argv[++i] != NULL)
+		if (export_one(cmd.argv[i], msh) != EXIT_SUCCESS)
+			status = EXIT_FAILURE;
+	return (status);
+}
+
+static uint8_t	is_valid_identifier(
+	const char *arg,
+	size_t name_len
+)
+{
+	size_t	i;
+
+	if (name_len == 0 || arg == NULL)
+		return (0);
+	if (!ft_isalpha(arg[0]) && arg[0] != '_')
+		return (0);
+	i = 0;
+	while (++i < name_len)
+		if (!ft_isalnum(arg[i]) && arg[i] != '_')
+			return (0);
+	return (1);
+}
+
+static uint8_t	export_one(
+	char *arg,
+	t_minishell *msh
+)
+{
+	char	*eq_pos;
+	char	*name;
+	size_t	name_len;
+
+	eq_pos = ft_strchr(arg, '=');
+	name_len = ft_strlen(arg);
+	if (eq_pos != NULL)
+		name_len = (size_t)(eq_pos - arg);
+	if (!is_valid_identifier(arg, name_len))
+		return (ft_eprintf("minishell: export: `%s': not a valid identifier\n",
+				arg), EXIT_FAILURE);
+	name = ft_substr(arg, 0, name_len);
+	if (name == NULL)
+		return (EXIT_FAILURE);
+	if (eq_pos != NULL)
+		set_env(name, eq_pos + 1, msh);
+	else
+		set_env(name, "", msh);
+	free(name);
+	return (EXIT_SUCCESS);
+}

src/builtins/pwd/pwd.c

@@ -12,15 +12,21 @@
 
 #include "builtins.h"
 
-u_int8_t	builtin_pwd(
+uint8_t	builtin_pwd(
 	t_command cmd,
 	t_minishell *msh
 ){
-	char	cwd[PATH_MAX];
+	char	*cwd;
 
 	(void)cmd;
 	(void)msh;
-	if (getcwd(cwd, PATH_MAX) != NULL)
-		ft_putendl(cwd);
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL)
+	{
+		perror("minishell: pwd");
+		return (EXIT_FAILURE);
+	}
+	ft_putendl(cwd);
+	free(cwd);
 	return (EXIT_SUCCESS);
 }

src/builtins/unset/unset.c

@@ -0,0 +1,61 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   unset.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/09 22:05:00 by codex             #+#    #+#             */
+/*   Updated: 2026/02/09 22:05:00 by codex            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "builtins.h"
+
+static uint8_t	is_valid_identifier(const char *arg);
+static uint8_t	unset_one(char *arg, t_minishell *msh);
+
+uint8_t	builtin_unset(
+	t_command cmd,
+	t_minishell *msh
+)
+{
+	uint8_t	status;
+	size_t	i;
+
+	status = EXIT_SUCCESS;
+	i = 0;
+	while (cmd.argv[++i] != NULL)
+		if (unset_one(cmd.argv[i], msh) != EXIT_SUCCESS)
+			status = EXIT_FAILURE;
+	return (status);
+}
+
+static uint8_t	is_valid_identifier(
+	const char *arg
+)
+{
+	size_t	i;
+
+	if (arg == NULL || *arg == '\0')
+		return (0);
+	if (!ft_isalpha(arg[0]) && arg[0] != '_')
+		return (0);
+	i = 0;
+	while (arg[++i] != '\0')
+		if (!ft_isalnum(arg[i]) && arg[i] != '_')
+			return (0);
+	return (1);
+}
+
+static uint8_t	unset_one(
+	char *arg,
+	t_minishell *msh
+)
+{
+	if (!is_valid_identifier(arg))
+		return (ft_eprintf("minishell: unset: `%s': not a valid identifier\n",
+				arg), EXIT_FAILURE);
+	unset_env(arg, msh);
+	return (EXIT_SUCCESS);
+}

src/core/command/command.c

@@ -9,4 +9,3 @@
 /*   Updated: 2026/02/09 18:40:04 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
-

src/core/signals.c

@@ -0,0 +1,66 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   signals.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 00:00:00 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 00:00:00 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "core.h"
+
+static int	g_signal = 0;
+
+static void	sigint_handler(int signal)
+{
+	g_signal = signal;
+	write(STDOUT_FILENO, "\n", 1);
+	rl_on_new_line();
+	rl_replace_line("", 0);
+	rl_redisplay();
+}
+
+void	minishell_set_interactive_signals(void)
+{
+	struct sigaction	action;
+
+	ft_bzero(&action, sizeof(action));
+	action.sa_handler = sigint_handler;
+	sigemptyset(&action.sa_mask);
+	sigaction(SIGINT, &action, NULL);
+	action.sa_handler = SIG_IGN;
+	sigaction(SIGQUIT, &action, NULL);
+}
+
+void	minishell_set_execution_signals(void)
+{
+	struct sigaction	action;
+
+	ft_bzero(&action, sizeof(action));
+	action.sa_handler = SIG_IGN;
+	sigemptyset(&action.sa_mask);
+	sigaction(SIGINT, &action, NULL);
+	sigaction(SIGQUIT, &action, NULL);
+}
+
+void	minishell_set_child_signals(void)
+{
+	struct sigaction	action;
+
+	ft_bzero(&action, sizeof(action));
+	action.sa_handler = SIG_DFL;
+	sigemptyset(&action.sa_mask);
+	sigaction(SIGINT, &action, NULL);
+	sigaction(SIGQUIT, &action, NULL);
+}
+
+bool	minishell_consume_sigint(void)
+{
+	if (g_signal != SIGINT)
+		return (false);
+	g_signal = 0;
+	return (true);
+}

src/errors/errors.c

@@ -0,0 +1,31 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   errors.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/10 22:22:06 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/12 02:55:36 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "errors.h"
+
+void	syntax_error_unexpected_token(
+	t_token *token
+)
+{
+	char	*cause;
+
+	if (token == NULL)
+		cause = "newline";
+	else
+		cause = token->value;
+	ft_eprintf("minishell: syntax error near unexpected token `%s'\n", cause);
+}
+
+void	malloc_error(void)
+{
+	ft_eprintf("minishell: %s\n", strerror(ENOMEM));
+}

src/executor/command_exec.c

@@ -0,0 +1,86 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   command_exec.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/11 00:00:00 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/11 00:00:00 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "executor.h"
+#include "builtins.h"
+#include <errno.h>
+
+static uint8_t	resolve_execve_status(void)
+{
+	if (errno == ENOENT)
+		return (127);
+	if (errno == EACCES || errno == ENOEXEC || errno == EISDIR)
+		return (126);
+	return (EXIT_FAILURE);
+}
+
+static uint8_t	execute_builtin(
+	const t_command *command,
+	t_minishell *minishell
+)
+{
+	const t_builtin_func	builtin
+		= ft_hashmap_get(minishell->builtins, command->argv[0]);
+
+	return (builtin(*command, minishell));
+}
+
+static void	handle_execve_error(
+	const t_command *command,
+	char **envp
+)
+{
+	uint8_t	exit_status;
+
+	exit_status = resolve_execve_status();
+	free_envp(envp);
+	perror(command->path);
+	exit(exit_status);
+}
+
+static void	execute_external_command(
+	const t_command *command,
+	t_minishell *minishell
+)
+{
+	char	**envp;
+
+	envp = get_envp(minishell);
+	if (envp == NULL)
+	{
+		perror("get_envp");
+		exit(EXIT_FAILURE);
+	}
+	execve(command->path, command->argv, envp);
+	handle_execve_error(command, envp);
+}
+
+uint8_t	executor_execute_command(
+	t_command *command,
+	t_minishell *minishell
+)
+{
+	if (command == NULL || command->argv == NULL || command->argv[0] == NULL)
+		return (EXIT_SUCCESS);
+	if (executor_is_builtin_command(command, minishell))
+		return (execute_builtin(command, minishell));
+	if (command->path != NULL)
+		free(command->path);
+	command->path = executor_resolve_command_path(command, minishell);
+	if (command->path == NULL)
+	{
+		ft_eprintf("minishell: %s: command not found\n", command->argv[0]);
+		return (127);
+	}
+	execute_external_command(command, minishell);
+	return (EXIT_FAILURE);
+}

src/executor/command_free.c

@@ -0,0 +1,54 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   command_free.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 00:00:00 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 00:00:00 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "executor.h"
+
+static void	cmdfree_argv(
+	char **argv
+)
+{
+	size_t	i;
+
+	if (argv == NULL)
+		return ;
+	i = 0;
+	while (argv[i] != NULL)
+	{
+		free(argv[i]);
+		i++;
+	}
+	free(argv);
+}
+
+static void	cmdfree_redirection(
+	t_redirection *redirection
+)
+{
+	if (redirection == NULL)
+		return ;
+	free(redirection->target);
+	free(redirection);
+}
+
+void	executor_cmdfree(
+	t_command *command
+)
+{
+	if (command == NULL)
+		return ;
+	cmdfree_argv(command->argv);
+	free(command->path);
+	ft_lstclear(&command->redirections,
+		(void (*)(void *))cmdfree_redirection);
+	ft_lstclear(&command->heredocs, (void (*)(void *))cmdfree_redirection);
+	free(command);
+}

src/executor/executor.c

@@ -6,198 +6,79 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2026/02/08 19:10:47 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/08 21:32:03 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/11 00:00:00 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "executor.h"
-#include "builtins.h"
 
-static inline uint8_t	execute_builtin(
-	const t_command *command,
+static void	init_exec_state(
+	t_exec_state *state,
+	t_list *command_list
+)
+{
+	state->exit_status = EXIT_SUCCESS;
+	state->pipeline.prev_read_fd = -1;
+	state->current_command = command_list;
+	state->last_child_pid = -1;
+}
+
+static bool	fork_current_command(
+	t_exec_state *state,
 	t_minishell *minishell
 )
 {
-	const t_builtin_func	builtin
-		= ft_hashmap_get(minishell->builtins, command->path);
+	pid_t	pid;
 
-	return (builtin(*command, minishell));
-}
-
-static void	handle_execve_error(
-	const t_command *command,
-	char **envp
-)
-{
-	free_envp(envp);
-	perror(command->path);
-	exit(EXIT_FAILURE);
-}
-
-static void	execute_external_command(
-	const t_command *command,
-	t_minishell *minishell
-)
-{
-	char	**envp;
-
-	envp = get_envp(minishell);
-	if (envp == NULL)
-	{
-		perror("get_envp");
-		exit(EXIT_FAILURE);
-	}
-	execve(command->path, command->argv, envp);
-	handle_execve_error(command, envp);
-}
-
-static uint8_t	execute_command(
-	const t_command *command,
-	t_minishell *minishell
-)
-{
-	if (is_builtin(command->path, minishell))
-		return (execute_builtin(command, minishell));
-	else
-	{
-		execute_external_command(command, minishell);
-		return (EXIT_FAILURE); //! should never reach here
-	}
-}
-
-static void	cmdfree_argv(
-	char **argv
-)
-{
-	size_t	i;
-
-	if (argv == NULL)
-		return ;
-	i = 0;
-	while (argv[i] != NULL)
-	{
-		free(argv[i]);
-		i++;
-	}
-	free(argv);
-}
-
-static void	cmdfree(
-	t_command *command
-)
-{
-	if (command == NULL)
-		return ;
-	cmdfree_argv(command->argv);
-	free(command->path);
-	free(command);
-}
-
-static int	create_pipe_if_needed(
-	t_list *current_command,
-	t_pipeline *pipeline
-)
-{
-	if (!current_command->next)
-		return (0);
-	if (pipe(pipeline->pipefd) == PIPE_ERROR)
-		return (perror("pipe"), PIPE_ERROR);
-	return (0);
-}
-
-static bool	is_fork_required(
-	t_list *current_command,
-	t_minishell *minishell
-) {
-	const t_command	*command = current_command->content;
-
-	return (current_command->next != NULL
-		|| !is_builtin(command->path, minishell));
-}
-
-static pid_t	fork_process(
-	t_list *current_command,
-	t_minishell *minishell
-)
-{
-	pid_t			pid;
-
-	pid = 0;
-	if (is_fork_required(current_command, minishell))
-		pid = fork();
+	pid = fork();
 	if (pid == FORK_ERROR)
-		perror("fork");
-	return (pid);
+		return (perror("fork"), state->exit_status = EXIT_FAILURE, false);
+	if (pid == 0)
+		executor_child_process(state->current_command, &state->pipeline,
+			minishell);
+	state->last_child_pid = pid;
+	return (true);
 }
 
-static void	setup_child_input(
-	t_pipeline *pipeline
-)
-{
-	if (pipeline->prev_read_fd != -1)
-	{
-		dup2(pipeline->prev_read_fd, STDIN_FILENO);
-		close(pipeline->prev_read_fd);
-	}
-}
-
-static void	setup_child_output(
-	t_list *current_command,
-	t_pipeline *pipeline
-)
-{
-	if (current_command->next)
-	{
-		dup2(pipeline->pipefd[WRITE_PIPE], STDOUT_FILENO);
-		close(pipeline->pipefd[READ_PIPE]);
-		close(pipeline->pipefd[WRITE_PIPE]);
-	}
-}
-
-static void	child_process(
-	t_list *current_command,
-	t_pipeline *pipeline,
+static void	run_command_in_parent(
+	t_exec_state *state,
 	t_minishell *minishell
 )
 {
-	uint8_t			exit_status;
-	const t_command	*command = current_command->content;
+	t_command	*command;
+	int			saved_stdin;
+	int			saved_stdout;
 
-	setup_child_input(pipeline);
-	setup_child_output(current_command, pipeline);
-	exit_status = execute_command(command, minishell);
-	if (is_fork_required(current_command, minishell))
-		exit(exit_status);
+	command = state->current_command->content;
+	if (!executor_apply_redirections(command, &saved_stdin, &saved_stdout))
+		state->exit_status = EXIT_FAILURE;
+	else
+		state->exit_status = executor_execute_command(command, minishell);
+	executor_restore_redirections(saved_stdin, saved_stdout);
 }
 
-static void	parent_cleanup(
-	t_list *current_command,
-	t_pipeline *pipeline
+static bool	run_current_command(
+	t_exec_state *state,
+	t_minishell *minishell
 )
 {
-	if (pipeline->prev_read_fd != -1)
-		close(pipeline->prev_read_fd);
-	if (current_command->next)
+	bool		should_fork;
+
+	if (executor_create_pipe_if_needed(state->current_command,
+			&state->pipeline) == PIPE_ERROR)
+		return (state->exit_status = EXIT_FAILURE, false);
+	should_fork = executor_is_fork_required(state->current_command,
+			&state->pipeline, minishell);
+	if (should_fork)
 	{
-		close(pipeline->pipefd[WRITE_PIPE]);
-		pipeline->prev_read_fd = pipeline->pipefd[READ_PIPE];
+		if (!fork_current_command(state, minishell))
+			return (false);
 	}
 	else
-		pipeline->prev_read_fd = -1;
-}
-
-static uint8_t	wait_for_children(void)
-{
-	uint8_t	exit_status;
-	int		status;
-
-	exit_status = EXIT_SUCCESS;
-	while (wait(&status) > 0)
-	{
-		if (WIFEXITED(status))
-			exit_status = WEXITSTATUS(status);
-	}
-	return (exit_status);
+		run_command_in_parent(state, minishell);
+	executor_parent_cleanup(state->current_command, &state->pipeline);
+	state->current_command = state->current_command->next;
+	return (true);
 }
 
 uint8_t	execute(
@@ -205,26 +86,19 @@ uint8_t	execute(
 	t_minishell *minishell
 )
 {
-	uint8_t		exit_status;
-	t_pipeline	pipeline;
-	t_list		*current_command;
-	pid_t		pid;
+	t_exec_state	state;
 
-	pipeline.prev_read_fd = -1;
-	current_command = command_list;
-	while (current_command)
+	init_exec_state(&state, command_list);
+	minishell_set_execution_signals();
+	while (state.current_command)
 	{
-		if (create_pipe_if_needed(current_command, &pipeline) == PIPE_ERROR)
+		if (!run_current_command(&state, minishell))
 			break ;
-		pid = fork_process(current_command, minishell);
-		if (pid == FORK_ERROR)
-			break ;
-		if (pid == 0)
-			child_process(current_command, &pipeline, minishell);
-		parent_cleanup(current_command, &pipeline);
-		current_command = current_command->next;
 	}
-	exit_status = wait_for_children();
-	ft_lstclear(&command_list, (void (*)(void *))cmdfree);
-	return (exit_status);
+	if (state.last_child_pid > 0)
+		state.exit_status = executor_wait_for_children(state.last_child_pid);
+	minishell_set_interactive_signals();
+	minishell->exit_status = state.exit_status;
+	ft_lstclear(&command_list, (void (*)(void *))executor_cmdfree);
+	return (state.exit_status);
 }

src/executor/path_resolver.c

@@ -0,0 +1,77 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   path_resolver.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/11 00:00:00 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/11 00:00:00 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "executor.h"
+
+static bool	is_path_explicit(
+	const char *command_name
+)
+{
+	return (command_name != NULL && ft_strchr(command_name, '/') != NULL);
+}
+
+static char	*resolve_path_from_env(
+	const char *command_name,
+	t_minishell *minishell
+)
+{
+	char	*command_path;
+	char	**path_env;
+	char	*path_value;
+	size_t	i;
+
+	path_value = get_env("PATH", minishell);
+	if (path_value == NULL)
+		return (NULL);
+	path_env = ft_split(path_value, ':');
+	if (path_env == NULL)
+		return (NULL);
+	command_path = NULL;
+	i = -1;
+	while (!command_path && path_env[++i] != NULL)
+	{
+		command_path = ft_strnjoin(3, path_env[i], "/", command_name);
+		if (command_path != NULL && access(command_path, X_OK) != EXIT_SUCCESS)
+		{
+			free(command_path);
+			command_path = NULL;
+		}
+	}
+	ft_free_split(path_env);
+	return (command_path);
+}
+
+static char	*resolve_explicit_path(
+	const char *command_name
+)
+{
+	if (access(command_name, F_OK) != EXIT_SUCCESS)
+		return (NULL);
+	if (access(command_name, X_OK) != EXIT_SUCCESS)
+		return (NULL);
+	return (ft_strdup(command_name));
+}
+
+char	*executor_resolve_command_path(
+	const t_command *command,
+	t_minishell *minishell
+)
+{
+	const char	*command_name;
+
+	if (command == NULL || command->argv == NULL || command->argv[0] == NULL)
+		return (NULL);
+	command_name = command->argv[0];
+	if (is_path_explicit(command_name))
+		return (resolve_explicit_path(command_name));
+	return (resolve_path_from_env(command_name, minishell));
+}

src/executor/pipeline_helpers.c

@@ -0,0 +1,73 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   pipeline_helpers.c                                 :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/11 00:00:00 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/11 00:00:00 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "executor.h"
+#include "builtins.h"
+
+int	executor_create_pipe_if_needed(
+	t_list *current_command,
+	t_pipeline *pipeline
+)
+{
+	if (!current_command->next)
+		return (0);
+	if (pipe(pipeline->pipefd) == PIPE_ERROR)
+		return (perror("pipe"), PIPE_ERROR);
+	return (0);
+}
+
+bool	executor_is_builtin_command(
+	const t_command *command,
+	t_minishell *minishell
+)
+{
+	if (command == NULL || command->argv == NULL || command->argv[0] == NULL)
+		return (false);
+	return (is_builtin(command->argv[0], minishell));
+}
+
+bool	executor_is_fork_required(
+	t_list *current_command,
+	const t_pipeline *pipeline,
+	t_minishell *minishell
+)
+{
+	const t_command	*command;
+
+	command = current_command->content;
+	return (pipeline->prev_read_fd != -1 || current_command->next != NULL
+		|| !executor_is_builtin_command(command, minishell));
+}
+
+void	executor_setup_child_input(
+	t_pipeline *pipeline
+)
+{
+	if (pipeline->prev_read_fd != -1)
+	{
+		dup2(pipeline->prev_read_fd, STDIN_FILENO);
+		close(pipeline->prev_read_fd);
+	}
+}
+
+void	executor_setup_child_output(
+	t_list *current_command,
+	t_pipeline *pipeline
+)
+{
+	if (current_command->next)
+	{
+		dup2(pipeline->pipefd[WRITE_PIPE], STDOUT_FILENO);
+		close(pipeline->pipefd[READ_PIPE]);
+		close(pipeline->pipefd[WRITE_PIPE]);
+	}
+}

src/executor/process_helpers.c

@@ -0,0 +1,95 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   process_helpers.c                                  :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/11 00:00:00 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/11 00:00:00 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "executor.h"
+
+static void	set_signal_exit_status(
+	int status,
+	uint8_t *exit_status
+)
+{
+	if (WTERMSIG(status) == SIGINT)
+		write(STDOUT_FILENO, "\n", 1);
+	else if (WTERMSIG(status) == SIGQUIT)
+	{
+		if (WCOREDUMP(status))
+			write(STDERR_FILENO, "Quit (core dumped)\n", 19);
+		else
+			write(STDERR_FILENO, "Quit\n", 5);
+	}
+	*exit_status = 128 + WTERMSIG(status);
+}
+
+static void	set_last_child_status(
+	int status,
+	uint8_t *exit_status
+)
+{
+	if (WIFEXITED(status))
+		*exit_status = WEXITSTATUS(status);
+	else if (WIFSIGNALED(status))
+		set_signal_exit_status(status, exit_status);
+}
+
+void	executor_child_process(
+	t_list *current_command,
+	t_pipeline *pipeline,
+	t_minishell *minishell
+)
+{
+	uint8_t		exit_status;
+	t_command	*command;
+
+	command = current_command->content;
+	minishell_set_child_signals();
+	executor_setup_child_input(pipeline);
+	executor_setup_child_output(current_command, pipeline);
+	if (!executor_apply_redirections(command, NULL, NULL))
+		exit(EXIT_FAILURE);
+	exit_status = executor_execute_command(command, minishell);
+	exit(exit_status);
+}
+
+void	executor_parent_cleanup(
+	t_list *current_command,
+	t_pipeline *pipeline
+)
+{
+	if (pipeline->prev_read_fd != -1)
+		close(pipeline->prev_read_fd);
+	if (current_command->next)
+	{
+		close(pipeline->pipefd[WRITE_PIPE]);
+		pipeline->prev_read_fd = pipeline->pipefd[READ_PIPE];
+	}
+	else
+		pipeline->prev_read_fd = -1;
+}
+
+uint8_t	executor_wait_for_children(
+	pid_t last_child_pid
+)
+{
+	uint8_t	exit_status;
+	int		status;
+	pid_t	pid;
+
+	exit_status = EXIT_SUCCESS;
+	pid = wait(&status);
+	while (last_child_pid > 0 && pid > 0)
+	{
+		if (pid == last_child_pid)
+			set_last_child_status(status, &exit_status);
+		pid = wait(&status);
+	}
+	return (exit_status);
+}

src/executor/redirections.c

@@ -0,0 +1,111 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   redirections.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/12 00:00:00 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/12 00:00:00 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "executor.h"
+#include <errno.h>
+
+static int	open_redirection_target(
+	const t_redirection *redirection
+)
+{
+	if (redirection->type == TOKEN_REDIRECT_IN)
+		return (open(redirection->target, O_RDONLY));
+	if (redirection->type == TOKEN_REDIRECT_OUT)
+		return (open(redirection->target, O_WRONLY | O_CREAT | O_TRUNC, 0644));
+	if (redirection->type == TOKEN_APPEND)
+		return (open(redirection->target, O_WRONLY | O_CREAT | O_APPEND, 0644));
+	errno = EINVAL;
+	return (-1);
+}
+
+static bool	backup_stream_if_needed(
+	const t_redirection *redirection,
+	int *saved_stdin,
+	int *saved_stdout
+)
+{
+	if (redirection->type == TOKEN_REDIRECT_IN && saved_stdin != NULL
+		&& *saved_stdin == -1)
+	{
+		*saved_stdin = dup(STDIN_FILENO);
+		if (*saved_stdin == -1)
+			return (perror("dup"), false);
+	}
+	if ((redirection->type == TOKEN_REDIRECT_OUT
+			|| redirection->type == TOKEN_APPEND) && saved_stdout != NULL
+		&& *saved_stdout == -1)
+	{
+		*saved_stdout = dup(STDOUT_FILENO);
+		if (*saved_stdout == -1)
+			return (perror("dup"), false);
+	}
+	return (true);
+}
+
+bool	executor_apply_redirections(
+	const t_command *command,
+	int *saved_stdin,
+	int *saved_stdout
+)
+{
+	t_list			*node;
+	t_redirection	*redirection;
+	int				fd;
+
+	if (saved_stdin != NULL)
+		*saved_stdin = -1;
+	if (saved_stdout != NULL)
+		*saved_stdout = -1;
+	if (command == NULL || command->redirections == NULL)
+		return (true);
+	node = command->redirections;
+	while (node != NULL)
+	{
+		redirection = (t_redirection *)node->content;
+		if (redirection == NULL || redirection->target == NULL)
+			return (false);
+		if (!backup_stream_if_needed(redirection, saved_stdin, saved_stdout))
+			return (false);
+		fd = open_redirection_target(redirection);
+		if (fd == -1)
+			return (perror(redirection->target), false);
+		if (redirection->type == TOKEN_REDIRECT_IN
+			&& dup2(fd, STDIN_FILENO) == -1)
+			return (close(fd), perror("dup2"), false);
+		if ((redirection->type == TOKEN_REDIRECT_OUT
+				|| redirection->type == TOKEN_APPEND)
+			&& dup2(fd, STDOUT_FILENO) == -1)
+			return (close(fd), perror("dup2"), false);
+		close(fd);
+		node = node->next;
+	}
+	return (true);
+}
+
+void	executor_restore_redirections(
+	int saved_stdin,
+	int saved_stdout
+)
+{
+	if (saved_stdin != -1)
+	{
+		if (dup2(saved_stdin, STDIN_FILENO) == -1)
+			perror("dup2");
+		close(saved_stdin);
+	}
+	if (saved_stdout != -1)
+	{
+		if (dup2(saved_stdout, STDOUT_FILENO) == -1)
+			perror("dup2");
+		close(saved_stdout);
+	}
+}

src/minishell.c

@@ -6,7 +6,7 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/10/20 20:51:33 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/09 18:48:34 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/13 20:12:07 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,6 +15,14 @@
 #include "parser.h"
 #include "executor.h"
 
+static void	set_prompts(
+	t_minishell *minishell
+)
+{
+	minishell->prompt.ps1 = DEFAULT_PS1;
+	minishell->prompt.ps2 = DEFAULT_PS2;
+}
+
 void	minishell_init(
 	t_minishell	*minishell,
 	char		**envp
@@ -22,6 +30,7 @@ void	minishell_init(
 	ft_bzero(minishell, sizeof(t_minishell));
 	set_envp(envp, minishell);
 	set_builtins(minishell);
+	set_prompts(minishell);
 	if (minishell->variables.environment == NULL || minishell->builtins == NULL)
 		minishell_clear(minishell);
 }
@@ -33,23 +42,24 @@ void	minishell_run(
 	t_list	*commands;
 
 	if (minishell == NULL)
-	{
-		minishell->exit_status = EXIT_FAILURE;
 		return ;
-	}
+	minishell_set_interactive_signals();
 	while (!minishell->exit)
 	{
-		line = readline(DEFAULT_PS1);
-		if (line != NULL)
+		if (isatty(STDIN_FILENO))
+			line = readline(minishell->prompt.ps1);
+		else
+			line = get_next_line(STDIN_FILENO);
+		handle_sigint_status(minishell);
+		if (handle_eof(line, minishell))
+			continue ;
+		if (*line != '\0')
 		{
-			if (*line != '\0')
-			{
-				add_history(line);
-				commands = parse(line, minishell);
-				execute(commands, minishell);
-			}
-			free(line);
+			add_history(line);
+			commands = parse(line, minishell);
+			minishell->exit_status = execute(commands, minishell);
 		}
+		free(line);
 	}
 }
 

src/minishell_helpers.c

@@ -0,0 +1,36 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   minishell_helpers.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 21:09:23 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 21:09:23 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+#include "core.h"
+
+void	handle_sigint_status(
+	t_minishell *minishell
+)
+{
+	if (!minishell_consume_sigint())
+		return ;
+	minishell->exit_status = 130;
+}
+
+bool	handle_eof(
+	char *line,
+	t_minishell *minishell
+)
+{
+	if (line != NULL)
+		return (false);
+	if (isatty(STDIN_FILENO))
+		ft_putendl("exit");
+	minishell->exit = true;
+	return (true);
+}

src/parser/lexer.c

@@ -6,33 +6,27 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2026/02/09 18:56:41 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/10 12:33:55 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/11 02:06:36 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "core.h"
 #include "parser.h"
 
-static t_token *tokenize(const char *line, size_t *start);
-static t_token_type get_token_type(const char *str);
-static t_token *token_new(t_token_type type, char *text);
-static void token_clear(t_token *token);
-static t_token *read_token(t_token_type type, const char *line, size_t *i);
-static t_token *read_word(const char *line, size_t *i);
-static inline bool is_meta(char c);
+static t_token	*tokenize(const char *line, size_t *start);
 
 /**
  * @brief Converts a command line string into a list of tokens.
  * 
  * @return A list of tokens or NULL on error.
  */
-t_list *lex(
+t_list	*lex(
 	const char *line
 )
 {
-	t_list *tokens;
-	t_token *token;
-	size_t i;
+	t_list	*tokens;
+	t_token	*token;
+	size_t	i;
 
 	tokens = NULL;
 	i = 0;
@@ -41,7 +35,7 @@ t_list *lex(
 		while (ft_isspace(line[i]))
 			i++;
 		if (line[i] == '\0')
-			break;
+			break ;
 		token = tokenize(line, &i);
 		ft_lstadd_back(&tokens, ft_lstnew(token));
 		if (token == NULL)
@@ -56,13 +50,13 @@ t_list *lex(
 /**
  * @return A new token or NULL on error.
  */
-static t_token *tokenize(
+static t_token	*tokenize(
 	const char *line,
 	size_t *start
 )
 {
-	t_token *token;
-	t_token_type type;
+	t_token			*token;
+	t_token_type	type;
 
 	if (line == NULL || line[*start] == '\0')
 		return (NULL);
@@ -73,108 +67,3 @@ static t_token *tokenize(
 		token = read_word(line, start);
 	return (token);
 }
-
-static t_token_type get_token_type(
-	const char *str
-)
-{
-	if (str == NULL || str[0] == '\0')
-		return (TOKEN_WORD);
-	if (str[0] == '|')
-		return (TOKEN_PIPE);
-	if (str[0] == '<')
-	{
-		if (str[1] == '<')
-			return (TOKEN_HEREDOC);
-		return (TOKEN_REDIRECT_IN);
-	}
-	if (str[0] == '>')
-	{
-		if (str[1] == '>')
-			return (TOKEN_APPEND);
-		return (TOKEN_REDIRECT_OUT);
-	}
-	return (TOKEN_WORD);
-}
-
-static t_token *token_new(
-	t_token_type type,
-	char *text
-)
-{
-	t_token *token;
-
-	token = (t_token *)malloc(sizeof(t_token));
-	if (token == NULL)
-		return (NULL);
-	token->type = type;
-	token->value = text;
-	if (token->type == TOKEN_WORD && token->value == NULL)
-	{
-		free(token);
-		return (NULL);
-	}
-	return (token);
-}
-
-static void token_clear(
-	t_token *token
-)
-{
-	if (token != NULL)
-	{
-		free(token->value);
-		free(token);
-	}
-}
-
-static t_token *read_token(
-	t_token_type type,
-	const char *line,
-	size_t *i
-)
-{
-	const size_t	start = *i;
-	size_t 			end;
-
-	while (is_meta(line[*i]))
-		(*i)++;
-	end = *i;
-	while (ft_isspace(line[*i]))
-		(*i)++;
-	return (token_new(type, ft_substr(line, start, end - start)));
-}
-
-static t_token *read_word(
-	const char *line,
-	size_t *i
-)
-{
-	const size_t start = *i;
-	bool in_single_quote;
-	bool in_double_quote;
-
-	in_single_quote = false;
-	in_double_quote = false;
-	while (line[*i] != '\0')
-	{
-		char c = line[*i];
-		(void)c;
-		if (line[*i] == '\'' && !in_double_quote)
-			in_single_quote = !in_single_quote;
-		else if (line[*i] == '"' && !in_single_quote)
-			in_double_quote = !in_double_quote;
-		else if (!in_single_quote && !in_double_quote
-			&& (isspace(line[*i]) || is_meta(line[*i])))
-			break;
-		(*i)++;
-	}
-	return (token_new(TOKEN_WORD, ft_substr(line, start, *i - start)));
-}
-
-static inline bool is_meta(
-	char c
-)
-{
-	return (c == '|' || c == '<' || c == '>');
-}

src/parser/lexer_reader.c

@@ -0,0 +1,64 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   lexer_reader.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 21:13:23 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 21:13:23 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "parser.h"
+
+static inline bool	is_meta(char c);
+
+t_token	*read_token(
+	t_token_type type,
+	const char *line,
+	size_t *i
+)
+{
+	const size_t	start = *i;
+	size_t			end;
+
+	while (is_meta(line[*i]))
+		(*i)++;
+	end = *i;
+	while (ft_isspace(line[*i]))
+		(*i)++;
+	return (token_new(type, ft_substr(line, start, end - start)));
+}
+
+t_token	*read_word(
+	const char *line,
+	size_t *i
+)
+{
+	const size_t	start = *i;
+	bool			in_single_quote;
+	bool			in_double_quote;
+
+	in_single_quote = false;
+	in_double_quote = false;
+	while (line[*i] != '\0')
+	{
+		if (line[*i] == '\'' && !in_double_quote)
+			in_single_quote = !in_single_quote;
+		else if (line[*i] == '"' && !in_single_quote)
+			in_double_quote = !in_double_quote;
+		else if (!in_single_quote && !in_double_quote
+			&& (isspace(line[*i]) || is_meta(line[*i])))
+			break ;
+		(*i)++;
+	}
+	return (token_new(TOKEN_WORD, ft_substr(line, start, *i - start)));
+}
+
+static inline bool	is_meta(
+	char c
+)
+{
+	return (c == '|' || c == '<' || c == '>');
+}

src/parser/lexer_token.c

@@ -0,0 +1,67 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   lexer_token.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 21:12:49 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 21:12:49 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "parser.h"
+
+t_token_type	get_token_type(
+	const char *str
+)
+{
+	if (str == NULL || str[0] == '\0')
+		return (TOKEN_WORD);
+	if (str[0] == '|')
+		return (TOKEN_PIPE);
+	if (str[0] == '<')
+	{
+		if (str[1] == '<')
+			return (TOKEN_HEREDOC);
+		return (TOKEN_REDIRECT_IN);
+	}
+	if (str[0] == '>')
+	{
+		if (str[1] == '>')
+			return (TOKEN_APPEND);
+		return (TOKEN_REDIRECT_OUT);
+	}
+	return (TOKEN_WORD);
+}
+
+t_token	*token_new(
+	t_token_type type,
+	char *text
+)
+{
+	t_token	*token;
+
+	token = (t_token *)malloc(sizeof(t_token));
+	if (token == NULL)
+		return (NULL);
+	token->type = type;
+	token->value = text;
+	if (token->type == TOKEN_WORD && token->value == NULL)
+	{
+		free(token);
+		return (NULL);
+	}
+	return (token);
+}
+
+void	token_clear(
+	t_token *token
+)
+{
+	if (token != NULL)
+	{
+		free(token->value);
+		free(token);
+	}
+}

src/parser/parser.c

@@ -6,295 +6,89 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/10/22 18:37:38 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/09 18:50:43 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/13 21:22:06 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "parser.h"
+#include "errors.h"
 
-// parse exclusive
-static char			*extract_next_command(char *line, size_t *index);
-static char			*trim_whitespaces(char *line, size_t *start, size_t *end);
-// static void			set_pipes(t_list *commands);
-
-// common
-static void			find_boundary(char *line, size_t *index, char bound_char);
-
-// command exclusive
-static t_command	*cmdnew(char *line, t_minishell *minishell);
-static void			set_argv(t_command *command, char *line, t_minishell *minishell);
-static void			expand_envs(char *arg, t_minishell *minishell);
-static char			**lst_to_argv(t_list *argv_list);
-static void			set_argc(t_command *command);
-static void			set_infile(t_command *command);
-static void			set_outfile(t_command *command);
-static void			set_path(t_command *command, t_minishell *minishell);
-static u_int8_t		path_is_solved(char *cmd_name, t_minishell *msh);
-static char			*solve_path(char *command_name, t_minishell *minishell);
+static t_list	*parse_tokens(t_list *tokens);
 
+/**
+ * @brief Converts a command line string into a list of commands.
+ *
+ * @param line      The command line string to parse.
+ * @param minishell The minishell instance.
+ *
+ * @return A list of commands or `NULL` on error.
+ */
 t_list	*parse(
 	char *line,
 	t_minishell *minishell
-) {
-	t_list		*commands;
-	t_list		*tokens;
-	t_command	*command;
-	char		*command_str;
-	size_t		i;
+)
+{
+	t_list	*commands;
+	t_list	*tokens;
 
 	if (line == NULL)
 		return (NULL);
-	commands = NULL;
-	i = 0;
-	while (line[i] != '\0')
-	{
-		tokens = tokenize();
-		command_str = extract_next_command(line, &i);
-		if (command_str != NULL)
-		{
-			command = cmdnew(command_str, minishell);
-			free(command_str);
-			if (command != NULL)
-				ft_lstadd_back(&commands, ft_lstnew(command));
-		}
-	}
-	// set_pipes(commands);
+	tokens = lex(line);
+	commands = parse_tokens(tokens);
+	ft_lstclear(&tokens, (void (*)(void *))token_clear);
+	expand(&commands, minishell);
 	return (commands);
 }
 
-// static void	set_pipes(
-// 	t_list *commands
-// ) {
-// 	t_list		*current_command;
-// 	t_list		*previous_command;
-// 	t_list		*next_command;
-// 	t_command	*command;
-
-// 	previous_command = NULL;
-// 	current_command = commands;
-// 	while (current_command != NULL)
-// 	{
-// 		command = (t_command *)current_command->content;
-// 		if (previous_command != NULL)
-// 			command->piped_from = (t_command *)previous_command->content;
-// 		next_command = current_command->next;
-// 		if (next_command != NULL)
-// 			command->piped_to = (t_command *)next_command->content;
-// 		previous_command = current_command;
-// 		current_command = current_command->next;
-// 	}
-// }
-
-static char	*extract_next_command(
-	char *line,
-	size_t *index
-) {
-	char	*command_str;
-	size_t	start;
-	size_t	end;
-
-	start = *index;
-	find_boundary(line, index, '|');
-	end = *index;
-	command_str = trim_whitespaces(line, &start, &end);
-	while (line[*index] == '|' || ft_isspace(line[*index]))
-		(*index)++;
-	return (command_str);
-}
-
-static void	find_boundary(
-	char *line,
-	size_t *index,
-	char bound_char
-) {
-	bool	in_single_quote;
-	bool	in_double_quote;
-
-	in_single_quote = false;
-	in_double_quote = false;
-	while (line[*index] != '\0')
-	{
-		if (line[*index] == '\'' && !in_double_quote)
-			in_single_quote = !in_single_quote;
-		else if (line[*index] == '"' && !in_single_quote)
-			in_double_quote = !in_double_quote;
-		if (line[*index] == bound_char && !in_single_quote && !in_double_quote)
-			break ;
-		(*index)++;
-	}
-}
-
-static char	*trim_whitespaces(
-	char *line,
-	size_t *start,
-	size_t *end
-) {
-	while (*start < *end && ft_isspace(line[*start]))
-		(*start)++;
-	while (*end > *start && ft_isspace(line[*end - 1]))
-		(*end)--;
-	if (*end > *start)
-		return (ft_substr(line, *start, *end - *start));
-	return (NULL);
-}
-
-static t_command	*cmdnew(
-	char *line,
-	t_minishell *minishell
-) {
+/**
+ * @brief Converts a list of tokens into a list of commands.
+ *
+ * @param tokens    The list of tokens to parse.
+ *
+ * @return A list of commands or `NULL` on error.
+ */
+static t_list	*parse_tokens(
+	t_list *tokens
+)
+{
+	t_list		*commands;
 	t_command	*command;
+	t_list		*current_token;
+	t_list		*new_command;
 
-	command = (t_command *)ft_calloc(1, sizeof(t_command));
-	if (!command)
+	if (tokens == NULL)
 		return (NULL);
-	// resolve_heredoc
-	set_argv(command, line, minishell);
-	if (!command->argv)
+	commands = NULL;
+	current_token = tokens;
+	if (((t_token *)current_token->content)->type == TOKEN_PIPE)
+		return (syntax_error_unexpected_token(
+				(t_token *)current_token->content), NULL);
+	while (current_token != NULL)
 	{
-		free(command);
-		return (NULL);
-	}
-	set_argc(command);
-	set_infile(command);
-	set_outfile(command);
-	set_path(command, minishell);
-	return (command);
-}
-
-static void	set_argv(
-	t_command *command,
-	char *line,
-	t_minishell *minishell
-) {
-	t_list	*argv_list;
-	char	*arg;
-	size_t	i;
-	size_t	start;
-	size_t	end;
-
-	if (line == NULL)
-		return ;
-	i = 0;
-	argv_list = NULL;
-	while (line[i] != '\0')
-	{
-		start = i;
-		find_boundary(line, &i, ' ');
-		end = i;
-		arg = trim_whitespaces(line, &start, &end);
-		expand_envs(arg, minishell);
-		if (arg != NULL)
-			ft_lstadd_back(&argv_list, ft_lstnew(arg));
-		while (ft_isspace(line[i]))
-			i++;
-	}
-	command->argv = lst_to_argv(argv_list);
-	ft_lstclear(&argv_list, free);
-}
-
-static void	expand_envs(
-	char *arg,
-	t_minishell *minishell
-) {
-	// TODO
-	(void)arg;
-	(void)minishell;
-}
-
-static char	**lst_to_argv(
-	t_list *argv_list
-) {
-	char	**argv;
-	t_list	*current_arg;
-	size_t	i;	
-
-	argv = (char **)ft_calloc(ft_lstsize(argv_list) + 1, sizeof(char *));
-	if (!argv)
-		return (NULL);
-	i = 0;
-	current_arg = argv_list;
-	while (current_arg != NULL)
-	{
-		argv[i] = ft_strdup((char *)current_arg->content);
-		i++;
-		current_arg = current_arg->next;
-	}
-	return (argv);
-}
-
-static void	set_argc(
-	t_command *command
-) {
-	int	argc;
-
-	argc = 0;
-	while (command->argv[argc] != NULL)
-		argc++;
-	command->argc = argc;
-}
-
-static void	set_infile(
-	t_command *command
-) {
-	// test_infile
-	command->infile = -1;
-}
-
-static void	set_outfile(
-	t_command *command
-) {
-	// test_outfile
-	command->outfile = STDOUT_FILENO;
-}
-
-static void	set_path(
-	t_command *command,
-	t_minishell *minishell
-) {
-	char	*command_path;
-	char	*command_name;
-
-	command_name = command->argv[0];
-	if (!path_is_solved(command_name, minishell))
-		command_path = solve_path(command_name, minishell);
-	else
-		command_path = ft_strdup(command_name);
-	command->path = command_path;
-}
-
-static char	*solve_path(
-	char *command_name,
-	t_minishell *minishell
-){
-	char	*command_path;
-	char	**path_env;
-	size_t	i;
-
-	path_env = ft_split(get_env("PATH", minishell), ':');
-	if (!path_env)
-		return (NULL);
-	command_path = NULL;
-	i = -1;
-	while (!command_path && path_env[++i])
-	{
-		command_path = ft_strnjoin(3, path_env[i], "/", command_name);
-		if (command_path != NULL && access(command_path, F_OK) != EXIT_SUCCESS)
+		command = command_new(&current_token);
+		if (command == NULL)
 		{
-			free(command_path);
-			command_path = NULL;
+			ft_lstclear(&commands, (void (*)(void *))command_clear);
+			return (NULL);
+		}
+		new_command = ft_lstnew(command);
+		if (new_command == NULL)
+		{
+			command_clear(command);
+			ft_lstclear(&commands, (void (*)(void *))command_clear);
+			return (malloc_error(), NULL);
+		}
+		ft_lstadd_back(&commands, new_command);
+		if (current_token != NULL)
+		{
+			if (current_token->next == NULL)
+			{
+				ft_lstclear(&commands, (void (*)(void *))command_clear);
+				return (syntax_error_unexpected_token(
+						(t_token *)current_token->content), NULL);
+			}
+			current_token = current_token->next;
 		}
 	}
-	ft_free_split(path_env);
-	return (command_path);
-}
-
-static u_int8_t	path_is_solved(
-	char *command_name,
-	t_minishell *minishell
-){
-	return (ft_strncmp(command_name, "/", 1) == 0
-		|| (command_name[1] && ft_strncmp(command_name, "./", 2) == 0)
-		|| (command_name[2] && ft_strncmp(command_name, "../", 3) == 0)
-		|| is_builtin(command_name, minishell)
-	);
+	return (commands);
 }

src/parser/parser_command.c

@@ -0,0 +1,120 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   parser_command.c                                   :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 21:26:42 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 21:26:42 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "parser.h"
+
+static t_list	*ft_lstfind(t_list *lst, bool (*pre)(void *));
+
+/**
+ * @brief Creates a new command from a list of tokens.
+ *
+ * @param tokens The list of tokens to create the command from.
+ *
+ * @return A new command or NULL on error.
+ *
+ * @note The `tokens` pointer is moved to the next command's tokens.
+ */
+t_command	*command_new(
+	t_list **tokens
+)
+{
+	t_command	*command;
+	t_list		*current_token;
+	t_list		*delimiter_token;
+
+	command = (t_command *)ft_calloc(1, sizeof(t_command));
+	if (command == NULL)
+		return (NULL);
+	current_token = *tokens;
+	delimiter_token = ft_lstfind(current_token, (bool (*)(void *))is_pipe);
+	while (command != NULL && current_token != delimiter_token)
+		command_add_tokens(&command, &current_token);
+	*tokens = current_token;
+	return (command);
+}
+
+/**
+ * @brief Adds a token to a command, updating the command's arguments and
+ *        redirections as necessary.
+ *
+ * @param command The command to add the token to.
+ * @param tokens  The list of tokens to add to the command.
+ *
+ * @note The `command` pointer can be free'd if there is an error while adding
+ *       the token.
+ */
+void	command_add_tokens(
+	t_command **command,
+	t_list **tokens
+)
+{
+	t_token	*token;
+
+	token = (t_token *)(*tokens)->content;
+	if (is_redirection(token))
+		redirection_add(tokens, token, command);
+	else
+		words_add(tokens, command);
+}
+
+/**
+ * @brief Checks if a token is a redirection token.
+ *
+ * @param token The token to check.
+ *
+ * @return `true` if the token is a redirection token, `false` otherwise.
+ */
+bool	is_redirection(
+	t_token *token
+)
+{
+	return (token->type == TOKEN_REDIRECT_IN
+		|| token->type == TOKEN_REDIRECT_OUT
+		|| token->type == TOKEN_APPEND
+		|| token->type == TOKEN_HEREDOC);
+}
+
+/**
+ * @brief Checks if a token is a pipe token.
+ *
+ * @param token The token to check.
+ *
+ * @return `true` if the token is a pipe token, `false` otherwise.
+ */
+bool	is_pipe(
+	t_token *token
+)
+{
+	return (token->type == TOKEN_PIPE);
+}
+
+/**
+ * @brief Finds a node in a linked list that satisfies a given predicate.
+ *
+ * @param lst The linked list to search through.
+ * @param pre   The predicate function to apply to each node's content.
+ *
+ * @returns The first node that satisfies the predicate or `NULL` if no such
+ *          node exists or if the list is `NULL`.
+ */
+static t_list	*ft_lstfind(
+	t_list *lst,
+	bool (*pre)(void *))
+{
+	while (lst != NULL)
+	{
+		if (pre(lst->content))
+			return (lst);
+		lst = lst->next;
+	}
+	return (NULL);
+}

src/parser/parser_expand.c

@@ -0,0 +1,122 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   parser_expand.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 21:24:45 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 21:24:45 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "parser.h"
+#include "errors.h"
+
+static char	*replace_value(char *original, char *value, int start, int end);
+static void	expand_variable(char **argument, int *i, t_minishell *minishell);
+static void	expand_argument(char **argument, t_minishell *minishell);
+
+static char	*replace_value(
+	char *original,
+	char *value,
+	int start,
+	int end
+)
+{
+	const char	*before = ft_substr(original, 0, start);
+	const char	*after = ft_substr(original, end, ft_strlen(original) - end);
+	const char	*expanded = ft_strnjoin(3, before, value, after);
+
+	free((char *)before);
+	free((char *)after);
+	return ((char *)expanded);
+}
+
+static void	expand_variable(
+	char **argument,
+	int *i,
+	t_minishell *minishell
+)
+{
+	char		*expanded;
+	char		*variable_name;
+	char		*variable_value;
+	const int	start = *i + 1;
+	int			end;
+
+	end = start;
+	while (ft_isalnum((*argument)[end]) || (*argument)[end] == '_')
+		end++;
+	variable_name = ft_substr(*argument, start, end - start);
+	if (variable_name == NULL)
+		return (minishell->exit = true, malloc_error());
+	variable_value = get_env(variable_name, minishell);
+	free(variable_name);
+	if (variable_value == NULL)
+		variable_value = "";
+	expanded = replace_value(*argument, variable_value, start - 1, end);
+	if (expanded == NULL)
+		return (minishell->exit = true, malloc_error());
+	*i += ft_strlen(variable_value);
+	free(*argument);
+	*argument = expanded;
+}
+
+static void	expand_argument(
+	char **argument,
+	t_minishell *minishell
+)
+{
+	bool	in_single_quote;
+	bool	in_double_quote;
+	int		i;
+
+	in_single_quote = false;
+	in_double_quote = false;
+	i = 0;
+	while ((*argument)[i] != '\0')
+	{
+		if ((*argument)[i] == '$' && !in_single_quote)
+		{
+			expand_variable(argument, &i, minishell);
+			if (*argument == NULL)
+				return (minishell->exit = true, malloc_error());
+		}
+		else
+		{
+			if ((*argument)[i] == '\'' && !in_double_quote)
+				in_single_quote = !in_single_quote;
+			else if ((*argument)[i] == '"' && !in_single_quote)
+				in_double_quote = !in_double_quote;
+			i++;
+		}
+	}
+}
+
+void	expand(
+	t_list **commands,
+	t_minishell *minishell
+)
+{
+	t_list		*current_command;
+	t_command	*command;
+	int			i;
+
+	current_command = *commands;
+	while (current_command != NULL)
+	{
+		command = (t_command *)current_command->content;
+		i = 0;
+		while (i < command->argc)
+		{
+			expand_argument(&command->argv[i], minishell);
+			if (command->argv[i] == NULL)
+				ft_lstclear(commands, (void (*)(void *))command_clear);
+			i++;
+		}
+		if (command == NULL)
+			return (ft_lstclear(commands, (void (*)(void *))command_clear));
+		current_command = current_command->next;
+	}
+}

src/parser/parser_redirection.c

@@ -0,0 +1,98 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   parser_redirection.c                               :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 21:28:35 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 21:28:35 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "parser.h"
+#include "errors.h"
+
+static t_redirection	*redirection_new(t_list **tokens);
+
+/**
+ * @brief Creates a new redirection from a list of tokens.
+ *
+ * @param tokens The list of tokens to create the redirection from.
+ *
+ * @return A new redirection or `NULL` on error.
+ */
+static t_redirection	*redirection_new(
+	t_list **tokens
+)
+{
+	t_redirection	*redirection;
+	t_token			*token;
+
+	redirection = (t_redirection *)malloc(sizeof(t_redirection));
+	if (redirection == NULL)
+		return (malloc_error(), NULL);
+	token = (t_token *)(*tokens)->content;
+	redirection->type = token->type;
+	*tokens = (*tokens)->next;
+	if (*tokens == NULL)
+	{
+		free(redirection);
+		return (syntax_error_unexpected_token(NULL), NULL);
+	}
+	token = (t_token *)(*tokens)->content;
+	if (token->type != TOKEN_WORD)
+	{
+		free(redirection);
+		while (*tokens != NULL)
+			*tokens = (*tokens)->next;
+		return (syntax_error_unexpected_token(token), NULL);
+	}
+	redirection->target = ft_strdup(token->value);
+	if (redirection->target == NULL)
+	{
+		free(redirection);
+		return (malloc_error(), NULL);
+	}
+	*tokens = (*tokens)->next;
+	return (redirection);
+}
+
+void	redirection_clear(
+	t_redirection *redirection
+)
+{
+	if (redirection != NULL)
+	{
+		free(redirection->target);
+		free(redirection);
+	}
+}
+
+void	redirection_add(
+	t_list **tokens,
+	t_token *token,
+	t_command **command
+)
+{
+	t_redirection	*redirection;
+	t_list			*redirection_tokens;
+
+	redirection = redirection_new(tokens);
+	if (redirection == NULL)
+	{
+		command_clear(*command);
+		*command = NULL;
+		return ;
+	}
+	redirection_tokens = ft_lstnew(redirection);
+	if (redirection_tokens == NULL)
+	{
+		free(redirection);
+		return (malloc_error());
+	}
+	if (token->type == TOKEN_HEREDOC)
+		ft_lstadd_back(&(*command)->heredocs, redirection_tokens);
+	else
+		ft_lstadd_back(&(*command)->redirections, redirection_tokens);
+}

src/parser/parser_words.c

@@ -0,0 +1,121 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   parser_words.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/13 21:29:44 by sede-san          #+#    #+#             */
+/*   Updated: 2026/02/13 21:29:44 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "parser.h"
+
+char	**args_to_array(t_list **args, size_t argc);
+void	command_clear_argv(t_command *command);
+
+/**
+ * @brief Converts a list of arguments into an array.
+ *
+ * @param args The list of arguments to convert.
+ * @param argc The number of arguments in the list.
+ *
+ * @return An array of arguments or `NULL` on error.
+ *
+ * @note The `args` list is cleared after the conversion and set to NULL.
+ */
+char	**args_to_array(
+	t_list **args,
+	size_t argc
+)
+{
+	char	**argv;
+	t_list	*arg;
+	size_t	i;
+
+	argv = (char **)malloc(sizeof(char *) * (argc + 1));
+	if (argv == NULL)
+		return (NULL);
+	i = 0;
+	arg = *args;
+	while (arg != NULL)
+	{
+		argv[i] = (char *)arg->content;
+		arg = arg->next;
+		i++;
+	}
+	argv[i] = NULL;
+	ft_lstclear_nodes(args);
+	return (argv);
+}
+
+/**
+ * @brief Adds all consecutive word tokens to a command's argv and updates its
+ *        argc accordingly.
+ *
+ * @param command The command to add the word tokens to.
+ * @param tokens  The list of tokens to add to the command.
+ */
+void	words_add(
+	t_list **tokens,
+	t_command **command
+)
+{
+	t_list	*args;
+	t_list	*arg;
+	t_token	*token;
+
+	args = NULL;
+	arg = *tokens;
+	token = (t_token *)arg->content;
+	while (arg != NULL && token->type == TOKEN_WORD)
+	{
+		ft_lstadd_back(&args, ft_lstnew(ft_strdup(token->value)));
+		(*command)->argc++;
+		arg = arg->next;
+		if (arg != NULL)
+			token = (t_token *)arg->content;
+	}
+	*tokens = arg;
+	(*command)->argv = args_to_array(&args, (*command)->argc);
+	ft_lstclear_nodes(&args);
+}
+
+void	command_clear_argv(
+	t_command *command
+)
+{
+	int	i;
+
+	if (command->argv != NULL)
+	{
+		i = 0;
+		while (i < command->argc)
+		{
+			free(command->argv[i]);
+			i++;
+		}
+		free(command->argv);
+		command->argv = NULL;
+	}
+}
+
+/**
+ * @brief Clears a command, freeing all associated memory.
+ *
+ * @param command The command to clear.
+ */
+void	command_clear(
+	t_command *command
+)
+{
+	if (command != NULL)
+	{
+		command_clear_argv(command);
+		ft_lstclear(&command->redirections,
+			(void (*)(void *))redirection_clear);
+		ft_lstclear(&command->heredocs, (void (*)(void *))redirection_clear);
+		free(command);
+	}
+}

src/variables/environment.c

@@ -32,26 +32,37 @@ void	set_envp(
 	char **envp,
 	t_minishell *msh
 ) {
-	char	**splitted_env;
+	char	*equal_sign;
+	char	*key;
+	char	*value;
 
+	if (msh == NULL || envp == NULL)
+		return ;
 	msh->variables.environment
 		= ft_hashmap_new(32, ft_hashmap_hashstr, ft_hashmap_strcmp);
-	if (msh == NULL)
-	{
-		ft_hashmap_clear(&msh->variables.environment, free);
+	if (msh->variables.environment == NULL)
 		return ;
-	}
 	while (*envp != NULL)
 	{
-		splitted_env = ft_split(*envp, '=');
-		if (splitted_env == NULL)
+		equal_sign = ft_strchr(*envp, '=');
+		if (equal_sign == NULL)
 		{
+			key = ft_strdup(*envp);
+			value = ft_strdup("");
+		}
+		else
+		{
+			key = ft_substr(*envp, 0, equal_sign - *envp);
+			value = ft_strdup(equal_sign + 1);
+		}
+		if (key == NULL || value == NULL)
+		{
+			free(key);
+			free(value);
 			ft_hashmap_clear(&msh->variables.environment, free);
 			return ;
 		}
-		ft_hashmap_put(msh->variables.environment,
-			ft_strdup(splitted_env[0]), ft_strdup(splitted_env[1]));
-		ft_free_split(splitted_env);
+		ft_hashmap_put(msh->variables.environment, key, value);
 		envp++;
 	}
 }
@@ -118,7 +129,9 @@ char	**get_envp(
 	size_t		i;
 
 	env_list = ft_hashmap_entries(msh->variables.environment);
-	envp = (char **)malloc((msh->variables.environment->size + 1) * sizeof(char *));
+	envp = (char **)malloc(
+			(msh->variables.environment->size + 1) * sizeof(char *)
+			);
 	if (envp != NULL)
 	{
 		i = 0;

src/variables/environment_unset.c

@@ -0,0 +1,41 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   environment_unset.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/02/09 22:16:00 by codex             #+#    #+#             */
+/*   Updated: 2026/02/09 22:16:00 by codex            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+#include "core.h"
+
+void	unset_env(
+	const char *env_name,
+	t_minishell *msh
+){
+	t_hashmap	*new_env;
+	t_list		*entries;
+	t_list		*current;
+	t_map_entry	*entry;
+
+	new_env = ft_hashmap_new(32, ft_hashmap_hashstr, ft_hashmap_strcmp);
+	if (new_env == NULL)
+		return ;
+	entries = ft_hashmap_entries(msh->variables.environment);
+	current = entries;
+	while (current != NULL)
+	{
+		entry = current->content;
+		if (ft_strcmp(entry->key, env_name) != 0)
+			ft_hashmap_put(new_env,
+				ft_strdup(entry->key), ft_strdup(entry->value));
+		current = current->next;
+	}
+	ft_lstclear_nodes(&entries);
+	ft_hashmap_clear(&msh->variables.environment, free);
+	msh->variables.environment = new_env;
+}

tests/builtins_edge_cases.sh

@@ -0,0 +1,204 @@
+#!/usr/bin/env bash
+
+set -u
+
+ROOT_DIR="$(cd -- "$(dirname -- "$0")/.." && pwd)"
+MSH_BIN="$ROOT_DIR/minishell"
+TMP_DIR="$(mktemp -d /tmp/minishell-builtins-tests.XXXXXX)"
+
+PASS_COUNT=0
+FAIL_COUNT=0
+CASE_OUT=""
+CASE_ERR=""
+CASE_EC=0
+CASE_NAME=""
+CASE_FAILED=0
+
+cleanup() {
+	rm -rf "$TMP_DIR"
+}
+
+pass() {
+	printf "PASS: %s\n" "$1"
+	PASS_COUNT=$((PASS_COUNT + 1))
+}
+
+fail() {
+	printf "FAIL: %s\n" "$1"
+	FAIL_COUNT=$((FAIL_COUNT + 1))
+	CASE_FAILED=1
+}
+
+assert_exit_code() {
+	local expected="$1"
+	if [ "$CASE_EC" -ne "$expected" ]; then
+		fail "$CASE_NAME -> exit code esperado $expected, obtenido $CASE_EC"
+	fi
+}
+
+assert_err_contains() {
+	local text="$1"
+	if ! grep -Fq -- "$text" "$CASE_ERR"; then
+		fail "$CASE_NAME -> stderr no contiene: $text"
+	fi
+}
+
+assert_out_contains() {
+	local text="$1"
+	if ! grep -Fq -- "$text" "$CASE_OUT"; then
+		fail "$CASE_NAME -> stdout no contiene: $text"
+	fi
+}
+
+assert_out_regex_count() {
+	local regex="$1"
+	local expected="$2"
+	local count
+
+	count="$(grep -Ec -- "$regex" "$CASE_OUT" || true)"
+	if [ "$count" -ne "$expected" ]; then
+		fail "$CASE_NAME -> regex [$regex] esperado $expected, obtenido $count"
+	fi
+}
+
+run_case() {
+	local name="$1"
+	local input="$2"
+	local expected_exit="$3"
+	local clean_env="${4:-0}"
+
+	CASE_NAME="$name"
+	CASE_OUT="$TMP_DIR/$name.out"
+	CASE_ERR="$TMP_DIR/$name.err"
+	CASE_EC=0
+	CASE_FAILED=0
+
+	if [ "$clean_env" -eq 1 ]; then
+		printf "%b" "$input" | env -i PATH="$PATH" "$MSH_BIN" >"$CASE_OUT" 2>"$CASE_ERR"
+	else
+		printf "%b" "$input" | "$MSH_BIN" >"$CASE_OUT" 2>"$CASE_ERR"
+	fi
+	CASE_EC=$?
+	assert_exit_code "$expected_exit"
+	if [ "$CASE_FAILED" -eq 0 ]; then
+		pass "$CASE_NAME"
+	fi
+}
+
+run_pwd_deleted_dir_case() {
+	local tmpd
+
+	tmpd="$TMP_DIR/pwd_deleted_dir"
+	mkdir -p "$tmpd"
+	run_case "pwd_deleted_dir" \
+		"cd $tmpd\n/bin/rmdir $tmpd\npwd\nexit\n" \
+		1
+	assert_err_contains "minishell: pwd:"
+	if [ "$CASE_FAILED" -eq 0 ]; then
+		pass "$CASE_NAME assertions"
+	fi
+}
+
+trap cleanup EXIT
+
+if [ ! -x "$MSH_BIN" ]; then
+	printf "Compilando minishell...\n"
+	if ! make -C "$ROOT_DIR" >/dev/null; then
+		printf "No se pudo compilar minishell\n"
+		exit 1
+	fi
+fi
+
+run_case "exit_non_numeric" "exit abc\n" 2
+assert_err_contains "numeric argument required"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "exit_sign_only" "exit +\n" 2
+assert_err_contains "numeric argument required"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "exit_negative_wrap" "exit -1\n" 255
+
+run_case "exit_too_many_args" "exit 7 8\npwd\nexit\n" 0
+assert_err_contains "too many arguments"
+assert_out_contains "$ROOT_DIR"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "cd_home_not_set" "cd\nexit\n" 1 1
+assert_err_contains "HOME not set"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "cd_invalid_path" "cd /definitely/not/here\nexit\n" 1
+assert_err_contains "No such file or directory"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "cd_dash_roundtrip" "cd /tmp\ncd -\npwd\nexit\n" 0
+assert_out_contains "$ROOT_DIR"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_pwd_deleted_dir_case
+
+run_case "echo_flags" "echo -nn hi\necho hi-there\nexit\n" 0
+assert_out_contains "himinishell >"
+assert_out_contains "hi-there"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "env_builtin_with_arg" "env EXTRA\nexit\n" 1
+assert_err_contains "too many arguments"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "export_unset_cycle" \
+	"export FOO=bar\n/usr/bin/env\nunset FOO\n/usr/bin/env\nexit\n" \
+	0
+assert_out_regex_count "^FOO=bar$" 1
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "env_builtin_lists_exported" \
+	"export FOO=bar\nenv\nunset FOO\nenv\nexit\n" \
+	0
+assert_out_regex_count "^FOO=bar$" 1
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "export_invalid_identifier" "export 1A=2\nexit\n" 1
+assert_err_contains "not a valid identifier"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "unset_invalid_identifier" "unset 1A\nexit\n" 1
+assert_err_contains "not a valid identifier"
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+run_case "export_without_value" "unset ZZZ\nexport ZZZ\n/usr/bin/env\nexit\n" 0
+assert_out_regex_count "^ZZZ=$" 1
+if [ "$CASE_FAILED" -eq 0 ]; then
+	pass "$CASE_NAME assertions"
+fi
+
+printf "\nResumen tests builtins: PASS=%d FAIL=%d\n" "$PASS_COUNT" "$FAIL_COUNT"
+if [ "$FAIL_COUNT" -ne 0 ]; then
+	exit 1
+fi
+exit 0