/*
 * setprogname.c -- get or set the program name
 *
 * Copyright (c) 2011-2017 David Demelier <markand@malikania.fr>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/*
 * Do not return NULL if the developer didn't call setprogname to
 * prevent useless segfault.
 */
static const char *g_pname = "";

void
setprogname(const char *progname)
{
    const char *p;

    /* Seek last / or \ on windows */
    if ((p = strrchr(progname, '/')) || (p = strrchr(progname, '\\')))
        g_pname = &p[1];
    else
        g_pname = progname;
}

const char *
getprogname(void)
{
    return g_pname;
}