update: added cd builtin

include/builtins.h

@@ -6,7 +6,7 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/10/29 22:09:51 by sede-san          #+#    #+#             */
-/*   Updated: 2025/10/30 12:06:39 by sede-san         ###   ########.fr       */
+/*   Updated: 2025/10/31 00:11:04 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -19,6 +19,10 @@
 /*                                 Functions                                  */
 /******************************************************************************/
 
+// cd.c
+
+extern u_int8_t	builtin_cd(t_command cmd, t_minishell *msh);
+
 // exit.c
 
 extern u_int8_t	builtin_exit(t_command cmd, t_minishell *msh);

src/builtins/cd/cd.c

@@ -0,0 +1,52 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cd.c                                               :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/10/31 00:05:22 by sede-san          #+#    #+#             */
+/*   Updated: 2025/10/31 01:38:14 by sede-san         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "builtins.h"
+
+static u_int8_t	handle_error(t_command cmd, t_minishell *msh, char *path);
+
+u_int8_t	builtin_cd(
+	t_command cmd,
+	t_minishell *msh
+){
+	char	*path;
+
+	if (cmd.argc > 2)
+	{
+		ft_eputendl("minishell: cd: too many arguments");
+		return (2);
+	}
+	else if (cmd.argc == 1)
+		path = getenv("HOME");
+	else
+		path = cmd.argv[1];
+	if (chdir(path) == -1)
+		return (handle_error(cmd, msh, path));
+	return (EXIT_SUCCESS);
+}
+
+static u_int8_t	handle_error(
+	t_command cmd,
+	t_minishell *msh,
+	char *path
+){
+	u_int8_t	exit_code;
+
+	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);
+}