gnupg/tools/mk-tdata.c

/* mk-tdata.c -  Create some simple random testdata
 * Copyright (C) 1998, 1999, 2000, 2001, 2006 Free Software Foundation, Inc.
 *
 * This file is free software; as a special exception the author gives
 * unlimited permission to copy and/or distribute it, with or without
 * modifications, as long as this notice is preserved.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>


#ifndef RAND_MAX   /* for SunOS */
#define RAND_MAX 32767
#endif

int
main(int argc, char **argv)
{
  int i, c = 0;
  int limit =0;
  int char_mode = 0;

  if (argc)
    {
      argc--;
      argv++;
    }

  /* Check for option --char N */
  if (argc > 1 && !strcmp (argv[0], "--char"))
    {
      char_mode = 1;
      c = strtol (argv[1], NULL, 0);
      argc -= 2;
      argv += 2;
    }

  limit = argc ? atoi(argv[0]) : 0;

  srand(getpid());

  for (i=0; !limit || i < limit; i++ )
    {
      if (char_mode)
        {
          putchar (c);
        }
      else
        {
#ifdef HAVE_RAND
          c = ((unsigned)(1 + (int) (256.0*rand()/(RAND_MAX+1.0)))-1);
#else
          c = ((unsigned)(1 + (int) (256.0*random()/(RAND_MAX+1.0)))-1);
#endif
          putchar (c);
        }
    }
  return 0;
}