From 282af378f21e609f68d4a3e2dda05b992072580d Mon Sep 17 00:00:00 2001
From: Hadeed Ahmad <hadeedji@gmail.com>
Date: Wed, 23 Aug 2023 02:32:16 +0500
Subject: [PATCH] Finish chapter 2

---
 .gitignore |  2 ++
 Makefile   |  4 ++++
 kilo.c     | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 60 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..03b7da1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.nvim.lua
+kilo
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..d262ca6
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,4 @@
+CCFLAGS := -Wall -Wextra -Wpedantic -Werror -std=c99
+
+kilo: kilo.c
+	$(CC) $(CCFLAGS) kilo.c -o kilo
diff --git a/kilo.c b/kilo.c
new file mode 100644
index 0000000..3af5156
--- /dev/null
+++ b/kilo.c
@@ -0,0 +1,54 @@
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <unistd.h>
+
+
+struct termios orig_termios;
+
+
+void die(const char *s) {
+    perror(s);
+    exit(1);
+}
+
+void disable_raw_mode() {
+    if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &orig_termios) == -1)
+        die("tcsetattr");
+}
+
+void enable_raw_mode() {
+    if (tcgetattr(STDIN_FILENO, &orig_termios) == -1) die("tcgetattr");
+    atexit(disable_raw_mode);
+
+    struct termios raw = orig_termios;
+    raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
+    raw.c_oflag &= ~(OPOST);
+    raw.c_cflag |= (CS8);
+    raw.c_lflag &= ~(ECHO | ICANON | ISIG);
+    raw.c_cc[VMIN] = 0;
+    raw.c_cc[VTIME] = 1;
+
+    if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) == -1) die("tcsetattr");
+}
+
+
+int main() {
+
+    enable_raw_mode();
+    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;
+}