mirror of
https://github.com/ventoy/Ventoy.git
synced 2024-11-11 13:10:38 +00:00
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2009, 2010, 2013
|
||
|
|
* Phillip Lougher <phillip@squashfs.org.uk>
|
||
|
|
*
|
||
|
|
* This program 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,
|
||
|
|
* or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program 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 this program; if not, write to the Free Software
|
||
|
|
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||
|
|
*
|
||
|
|
* lzma_wrapper.c
|
||
|
|
*
|
||
|
|
* Support for LZMA1 compression using LZMA SDK (4.65 used in
|
||
|
|
* development, other versions may work) http://www.7-zip.org/sdk.html
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <LzmaLib.h>
|
||
|
|
|
||
|
|
#include "squashfs_fs.h"
|
||
|
|
#include "compressor.h"
|
||
|
|
|
||
|
|
#define LZMA_HEADER_SIZE (LZMA_PROPS_SIZE + 8)
|
||
|
|
|
||
|
|
static int lzma_compress(void *strm, void *dest, void *src, int size, int block_size,
|
||
|
|
int *error)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static int lzma_uncompress(void *dest, void *src, int size, int outsize,
|
||
|
|
int *error)
|
||
|
|
{
|
||
|
|
unsigned char *s = src;
|
||
|
|
size_t outlen, inlen = size - LZMA_HEADER_SIZE;
|
||
|
|
int res;
|
||
|
|
|
||
|
|
outlen = s[LZMA_PROPS_SIZE] |
|
||
|
|
(s[LZMA_PROPS_SIZE + 1] << 8) |
|
||
|
|
(s[LZMA_PROPS_SIZE + 2] << 16) |
|
||
|
|
(s[LZMA_PROPS_SIZE + 3] << 24);
|
||
|
|
|
||
|
|
if(outlen > outsize) {
|
||
|
|
*error = 0;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
res = LzmaUncompress(dest, &outlen, src + LZMA_HEADER_SIZE, &inlen, src,
|
||
|
|
LZMA_PROPS_SIZE);
|
||
|
|
|
||
|
|
if(res == SZ_OK)
|
||
|
|
return outlen;
|
||
|
|
else {
|
||
|
|
*error = res;
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
struct compressor lzma_comp_ops = {
|
||
|
|
.init = NULL,
|
||
|
|
.compress = lzma_compress,
|
||
|
|
.uncompress = lzma_uncompress,
|
||
|
|
.options = NULL,
|
||
|
|
.usage = NULL,
|
||
|
|
.id = LZMA_COMPRESSION,
|
||
|
|
.name = "lzma",
|
||
|
|
.supported = 1
|
||
|
|
};
|
||
|
|
|