From 36de2495d62c1652236ac1ffcba46b0b12ddabeb Mon Sep 17 00:00:00 2001
From: Aleksa Vuckovic <aleksav013@gmail.com>
Date: Sat, 6 Aug 2022 20:03:12 +0200
Subject: keymap

---
 kernel/src/devices/keyboard.c | 75 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 73 insertions(+), 2 deletions(-)

(limited to 'kernel/src/devices/keyboard.c')

diff --git a/kernel/src/devices/keyboard.c b/kernel/src/devices/keyboard.c
index 105c3a8..bf4948d 100644
--- a/kernel/src/devices/keyboard.c
+++ b/kernel/src/devices/keyboard.c
@@ -1,13 +1,62 @@
 #include <stdint.h>
+#include <stdbool.h>
+
 #include <pic.h>
 #include <io.h>
 #include <graphics.h>
 #include <debug.h>
+#include <keymap.h>
 
 #define KEYBOARD_DATA_PORT	0x60
 #define KEYBOARD_STATUS_PORT	0x64
 
-uint8_t i = 0;
+static uint32_t x;
+static uint32_t y;
+bool is_pressed[128];
+
+uint32_t strlen(const char *s);
+
+uint32_t stoi(const char *s)
+{
+	static uint32_t num;
+	uint32_t s_len = strlen(s);
+
+	for (int i = s_len - 1; i >= 0; i--) {
+		num += s[i] - '0';
+	}
+
+	return num;
+}
+
+void itos(uint32_t num, char** s)
+{
+	uint32_t i;
+	for (i = 0; num; num/=10, i++) {
+		*s[i] = num%10 - '0';
+	}
+	*s[i] = '\0';
+}
+
+void print_char(char c)
+{
+	if (x * 8 >= fb.width) {
+		x = 0;
+		y++;
+	}
+	if (y * 16 >= fb.height) {
+		x = 0;
+		y = 0;
+	}
+	fb_draw_character(fb, c, x * 8, y * 16, WHITE, BLACK);
+	x++;
+}
+
+void print_string(char* s)
+{
+	for (uint32_t i = 0; i < strlen(s); i++) {
+		print_char(s[i]);
+	}
+}
 
 void keyboard_handler(void)
 {
@@ -16,5 +65,27 @@ void keyboard_handler(void)
 		return;
 	}
 	uint8_t keycode = inb(KEYBOARD_DATA_PORT);
-	fb_draw_character(fb, keycode, 0, 0, RED, BLACK);
+	if (keycode < keymap_len) {
+		is_pressed[keycode] = true;
+		if (keycode == KEY_SPACE) {
+			print_char(' ');
+
+		} else if (keycode == KEY_BACKSPACE) {
+			if (!x) return;
+			x--;
+			print_char(' ');
+			x--;
+		} else if (keycode == KEY_ENTER) {
+			x = 0;
+			y++;
+		} else {
+			if (keymap[keycode] == ' ') return;
+			if (is_pressed[KEY_LSHIFT] || is_pressed[KEY_RSHIFT])
+				print_char(shift_keymap[keycode]);
+			else
+				print_char(keymap[keycode]);
+		}
+	} else {
+		is_pressed[keycode - 128] = false;
+	}
 }
-- 
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