env: implement builtin env

Makefile

@@ -35,6 +35,7 @@ srcs = \
 	src/executing/here_doc/strip_newline.c \
 	src/executing/simple_cmd/builtin_cd.c \
 	src/executing/simple_cmd/builtin_echo.c \
+	src/executing/simple_cmd/builtin_env.c \
 	src/executing/simple_cmd/builtin_exit.c \
 	src/executing/simple_cmd/builtin_export.c \
 	src/executing/simple_cmd/builtin_invalid.c \

src/executing/simple_cmd/builtin_env.c

@@ -0,0 +1,30 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   builtin_env.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/04/02 19:35:52 by khais             #+#    #+#             */
+/*   Updated: 2025/04/02 19:38:16 by khais            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "builtins.h"
+#include "libft.h"
+
+t_builtin_type	builtin_env(t_simple_cmd *cmd, t_minishell *app)
+{
+	t_env	*env;
+
+	if (cmd->words->next != NULL)
+		ft_dprintf(STDERR_FILENO, "minishell: env: ignoring arguments\n");
+	env = app->env;
+	while (env != NULL)
+	{
+		ft_printf("%s=%s\n", env->key, env->value);
+		env = env->next;
+	}
+	app->last_return_value = 0;
+	return (BUILTIN_ENV);
+}

src/executing/simple_cmd/builtins.c

@@ -6,7 +6,7 @@
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/04/01 16:37:21 by khais             #+#    #+#             */
-/*   Updated: 2025/04/03 13:59:01 by khais            ###   ########.fr       */
+/*   Updated: 2025/04/03 14:16:55 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -28,6 +28,8 @@ t_builtin_type	get_builtin(t_simple_cmd *cmd)
 		return (BUILTIN_EXIT);
 	if (ft_strcmp("echo", word) == 0)
 		return (BUILTIN_ECHO);
+	if (ft_strcmp("env", word) == 0)
+		return (BUILTIN_ENV);
 	return (BUILTIN_INVALID);
 }
 
@@ -41,6 +43,7 @@ t_builtin_type	execute_builtin(t_simple_cmd *cmd, t_minishell *app)
 	[BUILTIN_EXPORT] = builtin_export,
 	[BUILTIN_EXIT] = builtin_exit,
 	[BUILTIN_ECHO] = builtin_echo,
+	[BUILTIN_ENV] = builtin_env,
 	};
 
 	type = get_builtin(cmd);

src/executing/simple_cmd/builtins.h

@@ -6,7 +6,7 @@
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/03/31 14:16:13 by khais             #+#    #+#             */
-/*   Updated: 2025/04/03 13:58:23 by khais            ###   ########.fr       */
+/*   Updated: 2025/04/03 14:17:17 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -21,6 +21,7 @@ t_builtin_type	builtin_cd(t_simple_cmd *cmd, t_minishell *app);
 t_builtin_type	builtin_export(t_simple_cmd *cmd, t_minishell *app);
 t_builtin_type	builtin_exit(t_simple_cmd *cmd, t_minishell *app);
 t_builtin_type	builtin_echo(t_simple_cmd *cmd, t_minishell *app);
+t_builtin_type	builtin_env(t_simple_cmd *cmd, t_minishell *app);
 
 t_builtin_type	get_builtin(t_simple_cmd *cmd);
 t_builtin_type	execute_builtin(t_simple_cmd *cmd, t_minishell *app);

src/executing/simple_cmd/simple_cmd_execute.h

@@ -5,8 +5,8 @@
 /*                                                    +:+ +:+         +:+     */
 /*   By: khais <marvin@42.fr>                       +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2025/03/27 16:20:31 by khais             #+#    #+#             */
+/*   Created: 2025/04/03 14:17/26 by khais             #+#    #+#             */
-/*   Updated: 2025/04/03 13:58:41 by khais            ###   ########.fr       */
+/*   Updated: 2025/04/03 14:17:26 by khais            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -26,6 +26,7 @@ typedef enum e_builtin_type
 	BUILTIN_EXPORT,
 	BUILTIN_EXIT,
 	BUILTIN_ECHO,
+	BUILTIN_ENV,
 }	t_builtin_type;
 
 #endif // SIMPLE_CMD_EXECUTE_H

test.sh

@@ -305,6 +305,7 @@ EOF
 
 EXTRAENV=-i
 when_run <<EOF "export with strange inputs"
+export ENV=$(which env)
 export PATH=$PATH
 export var
 echo status=\$?
@@ -312,7 +313,7 @@ echo var=[\$var]
 export blue=
 echo status=\$?
 echo blue=[\$blue]
-env -u PATH env
+\$ENV -u PATH -u ENV env
 EOF
 expecting <<EOF
 status=0
@@ -451,6 +452,36 @@ hi -n hello
 goodbye
 EOF
 
+EXTRAENV="-i"
+when_run <<EOF "env works"
+echo this should be empty:
+env
+echo
+export var=VALUE hi=hello bye=goodbye
+echo this contains some values
+env
+EOF
+expecting <<EOF
+this should be empty:
+
+this contains some values
+var=VALUE
+hi=hello
+bye=goodbye
+EOF
+
+EXTRAENV="-i"
+when_run <<EOF "env ignores additional arguments"
+export var=VALUE hi=hello bye=goodbye
+env -i name="The Other" ls
+EOF
+expecting <<EOF
+minishell: env: ignoring arguments
+var=VALUE
+hi=hello
+bye=goodbye
+EOF
+
 when_run <<EOF "quoted parentheses are not operators"
 echo unclosed '('
 EOF