signals and termios WIP

+ shell script placeholder
+ generics functions
+ valgrind add_history() supp
+ misc

srcs/signals.c

@@ -0,0 +1,84 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   signals.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/23 18:56:53 by lperrey           #+#    #+#             */
+/*   Updated: 2021/10/30 14:28:08 by lperrey          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+void	sigint_handler(int signum)
+{
+	// Comment virer LE ^D De l'affichage ? Il ne fait pas partie de "rl_line_buffer".
+	if (rl_line_buffer && *rl_line_buffer)
+	{
+		return ;
+	}
+	else
+	{
+		free_exit(g_all, g_all->last_exit_status);
+	}
+	return ;
+}
+
+/* void	sigquit_aka_eof_handler(int signum)
+{
+	//ft_putstr_fd("TESTS\n", 1);
+	ft_putstr_fd("\n", 1);
+	rl_replace_line("", 1);
+	rl_on_new_line();
+	rl_redisplay();
+	return ;
+} */
+
+int set_signals_handling(struct sigaction *ori_signal_behaviour,
+						struct sigaction *signal_behaviour)
+{
+	ori_signal_behaviour->sa_handler = SIG_DFL;
+
+	/*	ctrl-D exit the shell.
+		eof = ^D;  */
+	signal_behaviour->sa_handler = sigint_handler;
+	sigaction(SIGINT, signal_behaviour, NULL);
+
+	/*	ctrl-\ do nothing.
+		quit = ^\;  */
+	signal_behaviour->sa_handler = SIG_IGN;
+	//signal_behaviour->sa_handler = sigquit_aka_eof_handler;
+	sigaction(SIGQUIT, signal_behaviour, NULL);
+	
+	/*
+	** remap (^D to ^C) and (^C to ^D) in terminal
+	** ^D is now "SIGINT" (handle here)
+	** ^C is now EOF (handle in shell_loop())
+	*/
+	return (1);
+}
+
+/*
+ctrl-C print a new prompt on a newline.
+intr = ^C; 
+ctrl-D exit the shell.
+eof = ^D;
+ctrl-\ do nothing.
+quit = ^\; 
+*/
+
+/* 
+speed 38400 baud; rows 22; columns 90; line = 0;
+erase = ^?; kill = ^U;
+eol = M-^?; eol2 = M-^?;
+swtch = M-^?; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V;
+discard = ^O; min = 1; time = 0;
+-parenb -parodd -cmspar cs8 hupcl -cstopb cread -clocal -crtscts
+-ignbrk brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc ixany
+imaxbel iutf8
+opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
+isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke
+-flusho -extproc
+*/