source: projects/initscripts/tags/initscripts-8.91.3/src/usleep.c @ 1108

/* 
 * usleep
 * 
 * Written by Donald Barnes <djb@redhat.com> for Red Hat, Inc.
 * 
 * Copyright (c) 1997-2003 Red Hat, Inc. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2,
 * as published by the Free Software Foundation.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 *
 */


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

#include "popt.h"

int main(int argc, char **argv) {
  unsigned long count;
  poptContext optCon;
  int showVersion = 0;
  int showOot = 0;
  int rc;
  char * countStr = NULL;
  struct poptOption options[] = {
            { "version", 'v', POPT_ARG_NONE, &showVersion, 0, 
                        "Display the version of this program, and exit" },
            { "oot", 'o', POPT_ARG_NONE, &showOot, 0, 
                        "oot says hey!" },
            POPT_AUTOHELP
            { 0, 0, 0, 0, 0 }
        };

  optCon = poptGetContext("usleep", argc, argv, options,0);
  /*poptReadDefaultConfig(optCon, 1);*/
  poptSetOtherOptionHelp(optCon, "[microseconds]");

  if ((rc = poptGetNextOpt(optCon)) < -1) {
        fprintf(stderr, "usleep: bad argument %s: %s\n", 
                poptBadOption(optCon, POPT_BADOPTION_NOALIAS), 
                poptStrerror(rc));
        return 2;
  }

  if (showVersion) {
      printf("usleep version 1.2\n      usleep --help for more info\n");
      return 0;
  }

  if (showOot) {
      printf("oot says hey!\n");
      return 0;
  }

  countStr = poptGetArg(optCon);

  if (countStr == NULL) count = 1;

  else if (countStr && poptGetArg(optCon)) {
      fprintf(stderr, "%s: exactly one argument (number of microseconds) "
                "must be used\n", argv[0]);
      return 2;
  }

  else count = strtoul(countStr, NULL, 0); 

  usleep(count);
  return 0;
}