From 6b3503f17d09e0d9a600055068efe78369a2a7eb Mon Sep 17 00:00:00 2001
From: Lukas Jiriste <ljiriste@student.42prague.com>
Date: Thu, 2 May 2024 14:40:05 +0200
Subject: [PATCH] Add version without history

This version doesn't utilize GNU Readline so it has much lower memory
footprint. The main benefit however is that tracking with valgrind is
made easier with this.
---
 Makefile   |  3 ++
 src/main.c | 93 +++++++++++++++++++++++++++++++++++++++++++++---------
 2 files changed, 81 insertions(+), 15 deletions(-)

diff --git a/Makefile b/Makefile
index 573dd59..48ae981 100644
--- a/Makefile
+++ b/Makefile
@@ -28,6 +28,9 @@ all : $(NAME)
 debug : CFLAGS += -g
 debug : $(NAME)
 
+noleaks : CFLAGS += -DNOLEAKS
+noleaks : debug
+
 $(NAME) : $(OBJECTS) Libft/libft.a
 	$(CC) $(CFLAGS) -o $@ $^ $(LINKS)
 
diff --git a/src/main.c b/src/main.c
index 52c5889..5b18a73 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,7 +6,7 @@
 /*   By: ljiriste <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/04/26 13:11:47 by ljiriste          #+#    #+#             */
-/*   Updated: 2024/05/02 13:54:36 by ljiriste         ###   ########.fr       */
+/*   Updated: 2024/05/02 14:53:17 by ljiriste         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,9 +14,25 @@
 #include "libft.h"
 #include <stdlib.h>
 #include <unistd.h>				// getcwd
-#include <stdio.h>				// readline
-#include <readline/readline.h>	// readline
-#include <readline/history.h>	// readline
+
+#ifndef NOLEAKS
+# include <stdio.h>				// readline
+# include <readline/readline.h>	// readline
+# include <readline/history.h>	// readline
+#endif // NOLEAKS
+
+void	handle_input(__attribute__((unused)) const char *input, __attribute__((unused)) t_vars *vars)
+{
+	return ;
+}
+
+void	print_help(void)
+{
+	ft_printf("Minishell should be used without any arguments.\n");
+	return ;
+}
+
+#ifndef NOLEAKS
 
 // A string is "almost_empty" if it:
 //		is a NULL pointer
@@ -51,17 +67,6 @@ char	*rl_get_line(void)
 	return (line);
 }
 
-void	handle_input(__attribute__((unused)) const char *input, __attribute__((unused)) t_vars *vars)
-{
-	return ;
-}
-
-void	print_help(void)
-{
-	ft_printf("Minishell should be used without any arguments.\n");
-	return ;
-}
-
 /*
 // This would be more portable than the main with 3 input args
 extern char	**environ;
@@ -97,3 +102,61 @@ int	main(int argc, __attribute__((unused)) char **argv, char **envp)
 	ft_printf("exit\n");
 	return (0);
 }
+
+#else // NOLEAKS
+
+char	*get_line(void)
+{
+	char	*cwd;
+	char	*prompt;
+	char	*line;
+
+	cwd = getcwd(NULL, 0);
+	prompt = ft_strjoin(cwd, "$ ");
+	free(cwd);
+	ft_printf("%s", prompt);
+	free(prompt);
+	line = get_next_line(STDIN_FILENO);
+	if (!line)
+	{
+		ft_printf("\n");
+		return (line);
+	}
+	if (line[ft_strlen(line) - 1] == '\n')
+		line[ft_strlen(line) - 1] = '\0';
+	else
+		ft_printf("\n");
+	return (line);
+}
+
+int	main(int argc, __attribute__((unused)) char **argv, char **envp)
+{
+	char	*line;
+	t_vars	vars;
+
+	if (argc > 1)
+	{
+		print_help();
+		return (1);
+	}
+	if (init_vars(&vars, envp))
+	{
+		clean_vars(&vars);
+		return (2);
+	}
+	while (1)
+	{
+		line = get_line();
+		if (!line || !ft_strcmp(line, "exit"))
+			break ;
+		handle_input(line, &vars);
+		free(line);
+	}
+	clean_vars(&vars);
+	get_next_line(-1);
+	free(line);
+	ft_printf("exit\n");
+	return (0);
+}
+
+#endif // NOLEAKS
-- 
2.30.2