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 #include <config.h>
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include <unistd.h>
  18
  19
  20 #ifndef RAND_MAX   /* for SunOS */
  21 #define RAND_MAX 32767
  22 #endif
  23
  24 int
  25 main(int argc, char **argv)
  26 {
  27   int i, c = 0;
  28   int limit =0;
  29   int char_mode = 0;
  30
  31   if (argc)
  32     {
  33       argc--;
  34       argv++;
  35     }
  36
  37   /* Check for option --char N */
  38   if (argc > 1 && !strcmp (argv[0], "--char"))
  39     {
  40       char_mode = 1;
  41       c = strtol (argv[1], NULL, 0);
  42       argc -= 2;
  43       argv += 2;
  44     }
  45
  46   limit = argc ? atoi(argv[0]) : 0;
  47
  48   srand(getpid());
  49
  50   for (i=0; !limit || i < limit; i++ )
  51     {
  52       if (char_mode)
  53         {
  54           putchar (c);
  55         }
  56       else
  57         {
  58 #ifdef HAVE_RAND
  59           c = ((unsigned)(1 + (int) (256.0*rand()/(RAND_MAX+1.0)))-1);
  60 #else
  61           c = ((unsigned)(1 + (int) (256.0*random()/(RAND_MAX+1.0)))-1);
  62 #endif
  63           putchar (c);
  64         }
  65     }
  66   return 0;
  67 }