osx_console_shim.c

#include <string.h>

void clrscr(){
    printf("\033[2J");
}

void gotoxy(int x, int y) {
    char essq[100];     /* String variable to hold the escape sequence */
    char xstr[100];     /* Strings to hold the x and y coordinates */
    char ystr[100];     /* Escape sequences must be built with characters */
    
    /*
     ** Convert the screen coordinates to strings
     */
    sprintf(xstr, "%d", x);
    sprintf(ystr, "%d", y);
    
    /*
     ** Build the escape sequence (vertical move)
     */
    essq[0] = '\0';
    strcat(essq, "\033[");
    strcat(essq, ystr);
    
    /*
     ** Described in man terminfo as vpa=\E[%p1%dd
     ** Vertical position absolute
     */
    strcat(essq, "d");
    
    /*
     ** Horizontal move
     ** Horizontal position absolute
     */
    strcat(essq, "\033[");
    strcat(essq, xstr);
    /* Described in man terminfo as hpa=\E[%p1%dG */
    strcat(essq, "G");
    
    /*
     ** Execute the escape sequence
     ** This will move the cursor to x, y
     */
    printf("%s", essq);
}