next: https://viewsourcecode.org/snaptoken/kilo/02.enteringRawMode.ht…

…ml#turn-off-all-output-processing

kilo.c

@@ -1,3 +1,38 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <unistd.h>
+
+struct termios orig_termios;
+
+void disableRawMode() {
+    tcsetattr(STDIN_FILENO, TCSAFLUSH, &orig_termios);
+}
+
+void enableRawMode() {
+    tcgetattr(STDERR_FILENO, &orig_termios);
+    atexit(disableRawMode);
+
+    struct termios raw = orig_termios;
+    raw.c_iflag &= ~(ICRNL | IXON);
+    raw.c_oflag &= ~(OPOST);
+    raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
+
+    tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw);
+}
+
 int main() {
+    enableRawMode();
+
+    char c;
+    while (read(STDIN_FILENO, &c, 1) == 1 && c != 'q') {
+        if (iscntrl(c)) {
+            printf("%d\r\n", c);
+        } else {
+            printf("%d ('%c')\r\n", c, c);
+        }
+    }
+
     return 0;
 }