external/bsd/bzip2/dist/spewG.c

   1 /*      $NetBSD: spewG.c,v 1.1.1.2 2012/05/07 00:41:46 wiz Exp $        */
   2
   3
   4 /* spew out a thoroughly gigantic file designed so that bzip2
   5    can compress it reasonably rapidly.  This is to help test
   6    support for large files (> 2GB) in a reasonable amount of time.
   7    I suggest you use the undocumented --exponential option to
   8    bzip2 when compressing the resulting file; this saves a bit of
   9    time.  Note: *don't* bother with --exponential when compressing
  10    Real Files; it'll just waste a lot of CPU time :-)
  11    (but is otherwise harmless).
  12 */
  13
  14 /* ------------------------------------------------------------------
  15    This file is part of bzip2/libbzip2, a program and library for
  16    lossless, block-sorting data compression.
  17
  18    bzip2/libbzip2 version 1.0.6 of 6 September 2010
  19    Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org>
  20
  21    Please read the WARNING, DISCLAIMER and PATENTS sections in the
  22    README file.
  23
  24    This program is released under the terms of the license contained
  25    in the file LICENSE.
  26          ------------------------------------------------------------------ */
  27
  28
  29 #define _FILE_OFFSET_BITS 64
  30
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33
  34 /* The number of megabytes of junk to spew out (roughly) */
  35 #define MEGABYTES 5000
  36
  37 #define N_BUF 1000000
  38 char buf[N_BUF];
  39
  40 int main ( int argc, char** argv )
  41 {
  42    int ii, kk, p;
  43    srandom(1);
  44    setbuffer ( stdout, buf, N_BUF );
  45    for (kk = 0; kk < MEGABYTES * 515; kk+=3) {
  46       p = 25+random()%50;
  47       for (ii = 0; ii < p; ii++)
  48          printf ( "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" );
  49       for (ii = 0; ii < p-1; ii++)
  50          printf ( "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb" );
  51       for (ii = 0; ii < p+1; ii++)
  52          printf ( "ccccccccccccccccccccccccccccccccccccc" );
  53    }
  54    fflush(stdout);
  55    return 0;
  56 }