denyhosts/clamscan/libclamav/lzw/lzwdec.h
2022-10-22 18:41:00 +08:00

81 lines
2.6 KiB
C

/*
* Copyright (C) 2016 Cisco and/or its affiliates. All rights reserved.
*
* Author: Kevin Lin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
*
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
#ifndef __LZWDEC_H__
#define __LZWDEC_H__
#include <stdint.h>
struct lzw_internal_state;
typedef struct lzw_stream_s {
uint8_t *next_in;
unsigned avail_in;
unsigned total_in;
uint8_t *next_out;
unsigned avail_out;
unsigned total_out;
char *msg;
uint32_t flags;
struct lzw_internal_state *state;
} lzw_stream;
typedef lzw_stream *lzw_streamp;
#define LZW_OK 0
#define LZW_STREAM_END 1
#define LZW_STREAM_ERROR (-2)
#define LZW_DATA_ERROR (-3)
#define LZW_MEM_ERROR (-4)
#define LZW_BUF_ERROR (-5)
#define LZW_DICT_ERROR (-7)
/* option flags */
#define LZW_NOFLAGS 0x0
#define LZW_FLAG_EARLYCHG 0x1 /* code point changes one code earlier */
#define LZW_FLAG_EXTNCODE 0x2 /* use extended code points (12+ bits) */
/* state flags */
#define LZW_FLAG_FULLDICT 0x100 /* dictionary consumes all usable codes */
#define LZW_FLAG_EXTNCODEUSE 0x200 /* extended dictionary uses 12+ bit codes */
#define LZW_FLAG_INVALIDCODE 0x400 /* input references invalid code entry (data error) */
int lzwInit(lzw_streamp strm);
int lzwInflate(lzw_streamp strm);
int lzwInflateEnd(lzw_streamp strm);
#endif /* __LZWDEC_H__ */