/**

 *

 * Unicode != UTF-8

 * unicode with ncursesw ( wide char)

 * gcc $< -lncursesw -o $@

 */

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <fcntl.h>

#include <ncursesw/curses.h>

#include <wchar.h>

#include <locale.h>

#ifndef u_char

typedef unsigned char u_char;

#endif

#define ESCAPE 0x1B

#ifndef get_wch

extern int get_wch ();

#endif

int check_locale ()

{

    if (!setlocale (LC_CTYPE, "")) {

        perror ("SETLOCALE");

        return EXIT_FAILURE;

    }

    return EXIT_SUCCESS;

}

wchar_t fucnt (WINDOW * win)

{

    wchar_t guess;

    char dest[4];

    int maxx;

    int maxy;

    while (guess != ESCAPE) {

        while ((get_wch (&guess)) != OK)

            /*

             * waiting for multibyte character

             */

            ;

        maxx = getmaxx (win);

        maxy = getmaxy (win);

        dest[0] = 0;

        dest[1] = 0;

        dest[2] = 0;

        dest[3] = 0;

        if (wctomb (dest, guess) == -1) {

            perror ("WCTOMB");

            return -1;

        }

        mvprintw (maxy / 2, maxx / 2 - 12,

                  "UTF-8: (%2X:%2X:%2X:%2X)\t\t", (u_char) dest[0],

                  (u_char) dest[1], (u_char) dest[2], (u_char) dest[3]);

        mvprintw (maxy - 1, 0, "KEY: %2lc\t", guess);

        mvprintw (maxy - 1, maxx - 14, "UNICODE: %4X", guess);

        mvprintw (maxy - 1, maxx / 2 - 10, "Press ESC to quit");

    }

    return guess;

}

int main ()

{

    wchar_t x;

    WINDOW *win;

    check_locale ();

    win = initscr ();

    noecho ();

    x = fucnt (win);

    endwin ();

    printf ("\n");

    return EXIT_SUCCESS;

}