source: MondoRescue/branches/2.2.5/mindi-busybox/coreutils/sleep.c@ 1765

/* vi: set sw=4 ts=4: */
/*
 * sleep implementation for busybox
 *
 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

/* BB_AUDIT SUSv3 compliant */
/* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/sleep.html */

/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
 *
 * Rewritten to do proper arg and error checking.
 * Also, added a 'fancy' configuration to accept multiple args with
 * time suffixes for seconds, minutes, hours, and days.
 */

#include "libbb.h"

/* This is a NOFORK applet. Be very careful! */


#if ENABLE_FEATURE_FANCY_SLEEP
static const struct suffix_mult sfx[] = {
    { "s", 1 },
    { "m", 60 },
    { "h", 60*60 },
    { "d", 24*60*60 },
    { }
};
#endif

int sleep_main(int argc, char **argv);
int sleep_main(int argc, char **argv)
{
    unsigned duration;

#if ENABLE_FEATURE_FANCY_SLEEP

    if (argc < 2) {
        bb_show_usage();
    }

    ++argv;
    duration = 0;
    do {
        duration += xatoul_range_sfx(*argv, 0, UINT_MAX-duration, sfx);
    } while (*++argv);

#else  /* FEATURE_FANCY_SLEEP */

    if (argc != 2) {
        bb_show_usage();
    }

    duration = xatou(argv[1]);

#endif /* FEATURE_FANCY_SLEEP */

    if (sleep(duration)) {
        bb_perror_nomsg_and_die();
    }

    return EXIT_SUCCESS;
}