mirror of
https://github.com/alliedmodders/amxmodx.git
synced 2024-12-25 14:25:38 +03:00
156 lines
4.2 KiB
C
Executable File
156 lines
4.2 KiB
C
Executable File
/* testmini.c -- very simple test program for the miniLZO library
|
|
|
|
This file is part of the LZO real-time data compression library.
|
|
|
|
Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
|
|
|
|
The LZO library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2 of
|
|
the License, or (at your option) any later version.
|
|
|
|
The LZO library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with the LZO library; see the file COPYING.
|
|
If not, write to the Free Software Foundation, Inc.,
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
Markus F.X.J. Oberhumer
|
|
<markus@oberhumer.com>
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
|
|
/*************************************************************************
|
|
// This program shows the basic usage of the LZO library.
|
|
// We will compress a block of data and decompress again.
|
|
//
|
|
// For more information, documentation, example programs and other support
|
|
// files (like Makefiles and build scripts) please download the full LZO
|
|
// package from
|
|
// http://www.oberhumer.com/opensource/lzo/
|
|
**************************************************************************/
|
|
|
|
/* First let's include "minizo.h". */
|
|
|
|
#include "minilzo.h"
|
|
|
|
|
|
/* We want to compress the data block at `in' with length `IN_LEN' to
|
|
* the block at `out'. Because the input block may be incompressible,
|
|
* we must provide a little more output space in case that compression
|
|
* is not possible.
|
|
*/
|
|
|
|
#if defined(__LZO_STRICT_16BIT)
|
|
#define IN_LEN (8*1024)
|
|
#else
|
|
#define IN_LEN (128*1024L)
|
|
#endif
|
|
#define OUT_LEN (IN_LEN + IN_LEN / 64 + 16 + 3)
|
|
|
|
static lzo_byte in [ IN_LEN ];
|
|
static lzo_byte out [ OUT_LEN ];
|
|
|
|
|
|
/* Work-memory needed for compression. Allocate memory in units
|
|
* of `lzo_align_t' (instead of `char') to make sure it is properly aligned.
|
|
*/
|
|
|
|
#define HEAP_ALLOC(var,size) \
|
|
lzo_align_t __LZO_MMODEL var [ ((size) + (sizeof(lzo_align_t) - 1)) / sizeof(lzo_align_t) ]
|
|
|
|
static HEAP_ALLOC(wrkmem,LZO1X_1_MEM_COMPRESS);
|
|
|
|
|
|
/*************************************************************************
|
|
//
|
|
**************************************************************************/
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int r;
|
|
lzo_uint in_len;
|
|
lzo_uint out_len;
|
|
lzo_uint new_len;
|
|
|
|
#if defined(__EMX__)
|
|
_response(&argc,&argv);
|
|
_wildcard(&argc,&argv);
|
|
#endif
|
|
|
|
if (argc < 0 && argv == NULL) /* avoid warning about unused args */
|
|
return 0;
|
|
|
|
printf("\nLZO real-time data compression library (v%s, %s).\n",
|
|
lzo_version_string(), lzo_version_date());
|
|
printf("Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer\n\n");
|
|
|
|
|
|
/*
|
|
* Step 1: initialize the LZO library
|
|
*/
|
|
if (lzo_init() != LZO_E_OK)
|
|
{
|
|
printf("lzo_init() failed !!!\n");
|
|
return 3;
|
|
}
|
|
|
|
/*
|
|
* Step 2: prepare the input block that will get compressed.
|
|
* We just fill it with zeros in this example program,
|
|
* but you would use your real-world data here.
|
|
*/
|
|
in_len = IN_LEN;
|
|
lzo_memset(in,0,in_len);
|
|
|
|
/*
|
|
* Step 3: compress from `in' to `out' with LZO1X-1
|
|
*/
|
|
r = lzo1x_1_compress(in,in_len,out,&out_len,wrkmem);
|
|
if (r == LZO_E_OK)
|
|
printf("compressed %lu bytes into %lu bytes\n",
|
|
(long) in_len, (long) out_len);
|
|
else
|
|
{
|
|
/* this should NEVER happen */
|
|
printf("internal error - compression failed: %d\n", r);
|
|
return 2;
|
|
}
|
|
/* check for an incompressible block */
|
|
if (out_len >= in_len)
|
|
{
|
|
printf("This block contains incompressible data.\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Step 4: decompress again, now going from `out' to `in'
|
|
*/
|
|
r = lzo1x_decompress(out,out_len,in,&new_len,NULL);
|
|
if (r == LZO_E_OK && new_len == in_len)
|
|
printf("decompressed %lu bytes back into %lu bytes\n",
|
|
(long) out_len, (long) in_len);
|
|
else
|
|
{
|
|
/* this should NEVER happen */
|
|
printf("internal error - decompression failed: %d\n", r);
|
|
return 1;
|
|
}
|
|
|
|
printf("\nminiLZO simple compression test passed.\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
vi:ts=4
|
|
*/
|
|
|