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64 lines (51 loc) · 1.88 KB
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/* spew out a thoroughly gigantic file designed so that bzip2
can compress it reasonably rapidly. This is to help test
support for large files (> 2GB) in a reasonable amount of time.
I suggest you use the undocumented --exponential option to
bzip2 when compressing the resulting file; this saves a bit of
time. Note: *don't* bother with --exponential when compressing
Real Files; it'll just waste a lot of CPU time :-)
(but is otherwise harmless).
*/
/* ------------------------------------------------------------------
This file is part of bzip2/libbzip2, a program and library for
lossless, block-sorting data compression.
bzip2/libbzip2 version 1.0.8 of 13 July 2019
Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
Please read the WARNING, DISCLAIMER and PATENTS sections in the
README file.
This program is released under the terms of the license contained
in the file LICENSE.
------------------------------------------------------------------ */
#define _FILE_OFFSET_BITS 64
#include <stdio.h>
#include <stdlib.h>
#if defined(_WIN32)
# include <fcntl.h>
# include <io.h>
# define SET_BINARY_MODE(file) setmode(fileno(file),O_BINARY)
#else
# define SET_BINARY_MODE(file)
#endif
/* The number of megabytes of junk to spew out (roughly) */
#define MEGABYTES 5000
#define N_BUF 1000000
char buf[N_BUF];
int main ( int argc, char** argv )
{
int ii, kk, p;
srand(1);
SET_BINARY_MODE(stdout);
setvbuf ( stdout, buf, _IOFBF, N_BUF );
for (kk = 0; kk < MEGABYTES * 515; kk+=3) {
p = 25+rand()%50;
for (ii = 0; ii < p; ii++)
printf ( "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" );
for (ii = 0; ii < p-1; ii++)
printf ( "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb" );
for (ii = 0; ii < p+1; ii++)
printf ( "ccccccccccccccccccccccccccccccccccccc" );
}
fflush(stdout);
return 0;
}