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/*
* libexplain - Explain errno values returned by libc functions
* Copyright (C) 2013 Peter Miller
*
* 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 Lesser
* 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 <http://www.gnu.org/licenses/>.
*/
#include <libexplain/ac/math.h>
#include <libexplain/ac/stdio.h>
#include <libexplain/ac/stdlib.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/string_to_thing.h>
#include <libexplain/strtod.h>
#include <libexplain/usleep.h>
#include <libexplain/version_print.h>
static void
usage(void)
{
fprintf(stderr, "Usage: test_usleep <usec>\n");
fprintf(stderr, " test_usleep -V\n");
exit(EXIT_FAILURE);
}
static long long
get_micro_seconds(const char *text)
{
char *ep = 0;
double n = explain_strtod_or_die(text, &ep);
switch (*ep)
{
case 's':
/* seconds */
break;
case 'm':
if (ep[1] == 's')
{
/* milli seonds */
n *= 1e-3;
break;
}
/* minutes */
n *= 60;
break;
case 'h':
/* hours */
n *= 60. * 60;
break;
case 'd':
/* days */
n *= 24. * 60 * 60;
break;
default:
case 'u':
/* micro seconds */
n *= 1e-6;
break;
case 'n':
/* nano seconds */
n *= 1e-9;
break;
}
n *= 1e6;
return floor(n + 0.5);
}
int
main(int argc, char **argv)
{
long long usec;
for (;;)
{
int c = getopt(argc, argv, "V");
if (c == EOF)
break;
switch (c)
{
case 'V':
explain_version_print();
return EXIT_SUCCESS;
default:
usage();
}
}
usec = -1;
switch (argc - optind)
{
default:
usage();
case 1:
usec = get_micro_seconds(argv[optind]);
break;
}
explain_usleep_or_die(usec);
return EXIT_SUCCESS;
}
/* vim: set ts=8 sw=4 et : */
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