tools/mk-tdata.c

   1 /* mk-tdata.c -  Create some simple random testdata
   2  * Copyright (C) 1998, 1999, 2000, 2001, 2006 Free Software Foundation, Inc.
   3  *
   4  * This file is free software; as a special exception the author gives
   5  * unlimited permission to copy and/or distribute it, with or without
   6  * modifications, as long as this notice is preserved.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
  10  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  */
  12
  13 #ifdef HAVE_CONFIG_H
  14 #include <config.h>
  15 #endif
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <unistd.h>
  20
  21
  22 #ifndef RAND_MAX   /* for SunOS */
  23 #define RAND_MAX 32767
  24 #endif
  25
  26 int
  27 main(int argc, char **argv)
  28 {
  29   int i, c = 0;
  30   int limit =0;
  31   int char_mode = 0;
  32
  33   if (argc)
  34     {
  35       argc--;
  36       argv++;
  37     }
  38
  39   /* Check for option --char N */
  40   if (argc > 1 && !strcmp (argv[0], "--char"))
  41     {
  42       char_mode = 1;
  43       c = strtol (argv[1], NULL, 0);
  44       argc -= 2;
  45       argv += 2;
  46     }
  47
  48   limit = argc ? atoi(argv[0]) : 0;
  49
  50   srand(getpid());
  51
  52   for (i=0; !limit || i < limit; i++ )
  53     {
  54       if (char_mode)
  55         {
  56           putchar (c);
  57         }
  58       else
  59         {
  60 #ifdef HAVE_RAND
  61           c = ((unsigned)(1 + (int) (256.0*rand()/(RAND_MAX+1.0)))-1);
  62 #else
  63           c = ((unsigned)(1 + (int) (256.0*random()/(RAND_MAX+1.0)))-1);
  64 #endif
  65           putchar (c);
  66         }
  67     }
  68   return 0;
  69 }