commit ef1ef26738a7bbd4d8e1245306c89daa0e04feef
parent f0dfe89d1ccfe7ba26fcd91f381475b77387934a
Author: mjkloeckner <martinjkloeckner@gmail.com>
Date: Sat, 13 May 2023 16:18:50 -0300
set terminal to raw mode during input mode
Diffstat:
| M | msh.c | | | 9 | ++++++++- |
| A | tui.c | | | 45 | +++++++++++++++++++++++++++++++++++++++++++++ |
| A | tui.h | | | 7 | +++++++ |
3 files changed, 60 insertions(+), 1 deletion(-)
diff --git a/msh.c b/msh.c
@@ -6,6 +6,8 @@
#include <sys/types.h>
#include <sys/wait.h>
+#include "tui.h"
+
#define READLINE_BUFFER_INIT_SIZE 128
#define TOKENS_BUFFER_INIT_SIZE 8
#define TOKENS_DELIM " |"
@@ -105,15 +107,20 @@ void msh_loop(void) {
}
while (run) {
+ tui_set_input_mode();
+
/* make cusor blinking vertical bar */
printf("\033[5 q$ ");
buffer = buffer_read_line(buffer);
+
+ tui_reset_input_mode();
+
tokens = buffer_split(buffer, tokens);
/* skip execute if buffer is empty */
if(strlen(buffer) > 0)
msh_execute(tokens);
-
+
buffer_clear(buffer);
}
free(tokens);
diff --git a/tui.c b/tui.c
@@ -0,0 +1,45 @@
+#include "tui.h"
+
+#include <stdio.h>
+#include <termios.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+#include <ctype.h>
+
+#define TAB_SIZE 4
+
+static int is_terminal;
+static struct termios default_attributes;
+
+void tui_reset_input_mode (void) {
+ tcsetattr(STDIN_FILENO, TCSANOW, &default_attributes);
+}
+
+void tui_set_input_mode (void) {
+ struct termios tattr;
+
+ /* Make sure stdin is a terminal. */
+ if (!isatty(STDIN_FILENO)) {
+ is_terminal = 0;
+ return;
+ } else {
+ is_terminal = 1;
+ }
+
+ /* Save the terminal attributes so we can restore them later. */
+ tcgetattr(STDIN_FILENO, &default_attributes);
+ atexit(tui_reset_input_mode);
+
+ /* Set the terminal modes. */
+ tcgetattr(STDIN_FILENO, &tattr);
+
+ tattr.c_iflag &= ~(PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
+ tattr.c_oflag &= ~OPOST;
+ tattr.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
+ tattr.c_cflag &= ~(CSIZE | PARENB);
+ tattr.c_cflag |= CS8;
+
+ tcsetattr(STDIN_FILENO, TCSAFLUSH, &tattr);
+}
diff --git a/tui.h b/tui.h
@@ -0,0 +1,7 @@
+#ifndef __TUI_H__
+#define __TUI_H__
+
+void tui_reset_input_mode(void);
+void tui_set_input_mode (void);
+
+#endif
