/*
 * hello — smoke test for the two output APIs:
 *
 *   stdio (printf/puts/putchar)  — FAST, no attribute (ambient colour)
 *   conio (cprintf/cputs/putch)  — SLOWER, applies textcolor/textbackground
 *
 * Demonstrates textcolor/textbackground (Turbo-C-compatible names).
 */

#include <stdio.h>
#include <conio.h>
#include <gfx.h>
#include <sprinter.h>
#include <sprinter_exit.h>
#include <errno.h>

static uint8_t buff[] = {0xE4, 0x1B};

uint8_t get_style(uint32_t idx) {
    return (uint8_t)((buff[idx >> 2] >> ((idx & 3) << 1)) & 3u);
}

void set_style(uint32_t idx, uint8_t style) {
    buff[idx >> 2] = buff[idx >> 2] & ~(3u << ((idx & 3) << 1)) | ((style & 3u) << ((idx & 3) << 1));
}

int main(void)
{
    for(int i = 0; i < 8; i++) {
        dec8(get_style(i));
        puts("");
    }

    for(int i = 0; i < 8; i++) {
        set_style(i, (i + 1) & 3);
    }
    puts("");
    for(int i = 0; i < 8; i++) {
        dec8(get_style(i));
        puts("");
    }

    cputs("Press any key to exit...");
    (void)getchar();
    return 0;
}