cli.c

/*
 * Copyright 2009  Raphael Kubo da Costa <kubito@gmail.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "cli.h"
#include <stdio.h>
#include <stdlib.h>

static const char *const usage_message =
  "MC514 - Lab3\n"
  "Raphael Kubo da Costa, RA 072201\n"
  "\n"
  "Usage: sushibar <NUMTHREADS>\n"
  "\n"
  "  NUMTHREADS is the number of threads the program must create\n";

size_t cli_get_thread_count(int argc, char *argv[])
{
  char *error;
  long count;

  if (argc != CLI_ARGC)
    return 0;

  count = strtol(argv[1], &error, 10);
  if ((*error != '\0') || (count <= 0)) {
    fprintf(stderr, "Error: invalid thread number.\n");
    return 0;
  }

  return (size_t)count;
}

void cli_show_usage(void)
{
  fprintf(stderr, "%s", usage_message);
}