mirror of
git://git.sv.gnu.org/coreutils
synced 2026-06-05 15:22:12 -04:00
Jim Meyering
156 lines
3.2 KiB
C
156 lines
3.2 KiB
C
/* sleep - delay for a specified amount of time.
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Copyright (C) 84, 91, 92, 93, 1994 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifdef HAVE_CONFIG_H
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#if defined (CONFIG_BROKETS)
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/* We use <config.h> instead of "config.h" so that a compilation
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using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
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(which it would do because it found this file in $srcdir). */
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#include <config.h>
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#else
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#include "config.h"
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#endif
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#include <getopt.h>
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#include "version.h"
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#include "system.h"
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void error ();
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static long argdecode ();
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/* The name by which this program was run. */
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char *program_name;
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/* If non-zero, display usage information and exit. */
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static int show_help;
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/* If non-zero, print the version on standard output and exit. */
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static int show_version;
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static struct option const long_options[] =
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{
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{"help", no_argument, &show_help, 1},
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{"version", no_argument, &show_version, 1},
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{0, 0, 0, 0}
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};
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static void
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usage (status)
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int status;
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{
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if (status != 0)
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fprintf (stderr, "Try `%s --help' for more information.\n",
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program_name);
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else
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{
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printf ("Usage: %s [OPTION]... NUMBER[SUFFIX]\n", program_name);
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printf ("\
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\n\
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--help display this help and exit\n\
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--version output version information and exit\n\
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\n\
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SUFFIX may be s for seconds, m for minutes, h for hours or d for days.\n\
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");
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}
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exit (status);
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}
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void
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main (argc, argv)
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int argc;
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char **argv;
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{
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int i;
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unsigned seconds = 0;
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int c;
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program_name = argv[0];
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while ((c = getopt_long (argc, argv, "", long_options, (int *) 0)) != EOF)
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{
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switch (c)
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{
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case 0:
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break;
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default:
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usage (1);
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}
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}
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if (show_version)
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{
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printf ("sleep - %s\n", version_string);
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exit (0);
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}
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if (show_help)
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usage (0);
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if (argc == 1)
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{
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fprintf (stderr, "Usage: %s number[smhd]...\n", argv[0]);
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exit (1);
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}
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for (i = 1; i < argc; i++)
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seconds += argdecode (argv[i]);
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sleep (seconds);
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exit (0);
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}
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static long
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argdecode (s)
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char *s;
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{
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long value;
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register char *p = s;
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register char c;
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value = 0;
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while ((c = *p++) >= '0' && c <= '9')
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value = value * 10 + c - '0';
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switch (c)
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{
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case 's':
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break;
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case 'm':
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value *= 60;
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break;
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case 'h':
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value *= 60 * 60;
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break;
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case 'd':
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value *= 60 * 60 * 24;
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break;
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default:
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p--;
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}
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if (*p)
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error (1, 0, "invalid time interval `%s'", s);
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return value;
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}
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