From c65168b7cd79d5b82245e6db531d4da9a31e6573 Mon Sep 17 00:00:00 2001
From: Benjamyn Love <benjamyn.love@gmail.com>
Date: Tue, 6 Feb 2024 11:57:32 +1100
Subject: [PATCH] Chapter 2 complete

---
 .gitignore |  1 +
 Makefile   |  2 ++
 kilo.c     | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 kilo.c

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0627995
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+kilo
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..5444450
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+kilo: kilo.c
+	$(CC) kilo.c -o kilo -Wall -Wextra -pedantic -std=c99
diff --git a/kilo.c b/kilo.c
new file mode 100644
index 0000000..174f8db
--- /dev/null
+++ b/kilo.c
@@ -0,0 +1,60 @@
+/*** includes ***/
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termios.h>
+
+/*** data ***/
+
+struct termios orig_termios;
+
+/*** terminal ***/
+
+void die(const char *s) {
+  perror(s);
+  exit(1);
+}
+
+void disableRawMode() {
+  if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &orig_termios) == 1)
+    die("tcsetattr");
+}
+
+void enableRawMode() {
+  if (tcgetattr(STDIN_FILENO, &orig_termios) == -1) die("tcgetattr");
+  atexit(disableRawMode);
+
+  struct termios raw = orig_termios;
+
+  raw.c_iflag &= ~(IXON | ICRNL | INPCK | ISTRIP | BRKINT);
+  raw.c_oflag &= ~(OPOST);
+  raw.c_cflag |= (CS8);
+  raw.c_lflag &= ~(ECHO | ICANON | ISIG | IEXTEN);
+  raw.c_cc[VMIN] = 0;
+  raw.c_cc[VTIME] = 1;
+
+  if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) == -1) die("tcsetattr");
+}
+
+/*** init ***/
+
+int main() {
+  enableRawMode();
+
+  while (1) {
+    char c = '\0';
+    if (read(STDIN_FILENO, &c, 1) == -1 && errno != EAGAIN) die("read");
+
+    if (iscntrl(c)) {
+      printf("%d\r\n", c);
+    } else {
+      printf("%d ('%c')\r\n", c, c);
+    }
+    if (c == 'q') break;
+  }
+
+  return 0;
+}