duktape-1.5.2/examples/eventloop/ncurses.c

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/*
 *  Ncurses bindings example.
 *
 *  VALGRIND NOTE: when you use ncurses, there seems to be no way to get a
 *  clean valgrind run.  Even if ncurses state is properly shut down, there
 *  will still be some residual leaks.
 *
 *  Debian: install libncurses5-dev
 */
 
#include <curses.h>
#include "duktape.h"
 
static int ncurses_initscr(duk_context *ctx) {
    WINDOW *win;
 
    win = initscr();
    duk_push_pointer(ctx, (void *) win);
    return 1;
}
 
static int ncurses_endwin(duk_context *ctx) {
    int rc;
 
    rc = endwin();
    duk_push_int(ctx, rc);
    return 1;
}
 
static int ncurses_delscreen(duk_context *ctx) {
    /* XXX: no screen management now */
    (void) ctx;
    return 0;
}
 
static int ncurses_getmaxyx(duk_context *ctx) {
    int row, col;
 
    getmaxyx(stdscr, row, col);
 
    duk_push_array(ctx);
    duk_push_int(ctx, row);
    duk_put_prop_index(ctx, -2, 0);
    duk_push_int(ctx, col);
    duk_put_prop_index(ctx, -2, 1);
    return 1;
}
 
static int ncurses_printw(duk_context *ctx) {
    int rc;
    const char *str;
 
    str = duk_to_string(ctx, 0);
    rc = printw("%s", str);
    duk_push_int(ctx, rc);
    return 1;
}
 
static int ncurses_mvprintw(duk_context *ctx) {
    int y = duk_to_int(ctx, 0);
    int x = duk_to_int(ctx, 1);
    const char *str = duk_to_string(ctx, 2);
    int rc;
 
    rc = mvprintw(y, x, "%s", str);
    duk_push_int(ctx, rc);
    return 1;
}
 
static int ncurses_refresh(duk_context *ctx) {
    int rc;
 
    rc = refresh();
    duk_push_int(ctx, rc);
    return 1;
}
 
static int ncurses_getch(duk_context *ctx) {
    int rc;
 
    rc = getch();
    duk_push_int(ctx, rc);
    return 1;
}
 
static duk_function_list_entry ncurses_funcs[] = {
    { "initscr", ncurses_initscr, 0 },
    { "endwin", ncurses_endwin, 0 },
    { "delscreen", ncurses_delscreen, 0 },
    { "getmaxyx", ncurses_getmaxyx, 0 },
    { "printw", ncurses_printw, 1 },
    { "mvprintw", ncurses_mvprintw, 3 },
    { "refresh", ncurses_refresh, 0 },
    { "getch", ncurses_getch, 0 },
    { NULL, NULL, 0 }
};
 
void ncurses_register(duk_context *ctx) {
    /* Set global 'Ncurses'. */
    duk_push_global_object(ctx);
    duk_push_object(ctx);
    duk_put_function_list(ctx, -1, ncurses_funcs);
    duk_put_prop_string(ctx, -2, "Ncurses");
    duk_pop(ctx);
}