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#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
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 (c == '\n') {
x = 0;
y++;
return;
}
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)
{
uint8_t status = inb(KEYBOARD_STATUS_PORT);
if (!(status & 0x1)) {
return;
}
uint8_t keycode = inb(KEYBOARD_DATA_PORT);
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) {
print_char(keymap[keycode]);
} 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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