#include "main.h"
#include "string.h"
#include "video.h"

viddata_t viddata;

void setcolor(uchar fg, uchar bg) {
        viddata.col = (bg << 4) | fg;
}

char putch(char c) {
        ushort *ptr;

        if(c == '\n') {
                viddata.posy++;
                viddata.posx = 0;
                return c;
        }

        ptr = viddata.baseaddr + (viddata.posy * 80 + viddata.posx);
        *ptr = (viddata.col << 8) | c;

        viddata.posx++;
        if(viddata.posx == 80) {
                viddata.posx = 0;
                viddata.posy++;
        }

        return c;
}

int puts(char *string) {
        int i;

        for(i = 0; i < strlen(string); i++)
                putch(string[i]);

        return i;
}

void clr(void) {
        int i;
        viddata.posx = viddata.posy = 0;

        for(i = 0; i < 80 * 25; i++)
                putch(' ');

        viddata.posx = viddata.posy = 0;
}

void initvid(void) {
        viddata.baseaddr = (ushort*)0xb8000;
        viddata.ptr = viddata.baseaddr;
        viddata.posx = viddata.posy = 0;
        viddata.col = 0x07;
}