common.h

/*
wm-launch - launch X11 clients with unique IDs
Copyright (C) 2019-2020 James Reed

This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>.
*/

#include <stdlib.h>
#include <string.h>
#include <xcb/xcb.h>

#define IDSIZE 256

static xcb_atom_t
intern_atom(xcb_connection_t *conn, char *name, int only_if_exists)
{
    xcb_intern_atom_cookie_t c;
    xcb_intern_atom_reply_t *r;
    xcb_atom_t atom = 0;

    c = xcb_intern_atom(conn, only_if_exists, strlen(name), name);
    r = xcb_intern_atom_reply(conn, c, NULL);

    if (r) {
        atom = r->atom;
        free(r);
    }

    return atom;
}