/***************************************************************************
 *cr
 *cr            (C) Copyright 2007 The Board of Trustees of the
 *cr                        University of Illinois
 *cr                         All Rights Reserved
 *cr
 ***************************************************************************/
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include "args.h"

extern char *optarg;

void usage(char *name)
{
  printf("Usage: %s <-d data_file_name> <-r rnd_file_name> "
	 "<-m rnd_count> <-p count> <-o file_name>\n", name);
  exit(0);
}

void parse_args(int argc, char **argv, options* args)
{
  int c;

  args->data_name = NULL;
  args->random_name = NULL;
  args->random_count = 0;
  args->npoints = 0;
  args->output_name = NULL;
  
  while ((c = getopt(argc, argv, "d:n:r:p:o:")) != EOF)
    {
      switch (c)
	{
        case 'd':
          args->data_name = optarg;
          break;
        case 'r':
          args->random_name = optarg;
          break;
        case 'n':
          args->random_count = atoi(optarg);
          break;
        case 'o':
          args->output_name = optarg;
          break;
        case 'p':
          args->npoints = atol(optarg);
          break;
        default:
          usage(argv[0]);
	}
    }
}