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/*
* Copyright (c) 2004-2018, NVIDIA CORPORATION. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef LZ_H_
#define LZ_H_
/**
\file lz.h
\brief definitions for LZ compression used with IPA
*/
#include <stdarg.h>
#define NOLZ 1
/* handle returned from lzinitfile/ulzinit
* passed to lz/ulz, lzfini/lzfinifile/ulzfini, lzprintf */
typedef struct lzhandle {
FILE *file; /* file to use with lzprintf */
char *buff; /* buffer to collect line with lzprintf, or uncompressed line */
int bufflen; /* buffer length, allocated size */
size_t buffsize;
long savefile; /* ftell() result when lz*save called */
int inout; /* 0 for in, 1 for out */
} lzhandle;
/* lzinitfile/ulzinit compression arguments */
#define LZNOCOMPRESS 0
#define LZCOMPRESS 1
#define LZIPKINFO 2
#define LZIPMINFO 3
#define LZIPOINFO 4
#define LZIPPINFO 5
#define LZIPNINFO 6
#define LZIPXINFO 7
#define LZZLIB 8
#define LZMAX 9
#if defined(HOST_WIN)
#define vsnprintf _vsnprintf
#endif
/**
\brief read one char from 'in'
*/
char ulzgetc(lzhandle *lzh);
/**
\brief read from 'in', return an uncompressed line
*/
char *ulz(lzhandle *lzh);
/**
\brief call this to set the output file before calling lzprintf
*/
lzhandle *lzinitfile(FILE *out, int compress);
/**
\brief call before calling ulz at all
*/
lzhandle *ulzinit(FILE *in, int compress);
/**
\brief call this after the last write with lzprintf
lsfinifile calls lzfini
*/
void lzfinifile(lzhandle *lzh);
/**
\brief encode a single text line, wrote to out
*/
void lz(lzhandle *lzh, char *line, int linelen);
/**
\brief call lzprintf like printf(fmt,arg,arg,...);
lzprintf calls lz
*/
void lzprintf(lzhandle *lzh, const char *fmt, ...);
/**
\brief call this to reset the compression tables between sections
*/
void lzreinit(lzhandle *lzh);
/**
\brief ...
*/
void lzreset(lzhandle *lzh);
/**
\brief call lzwriterestore to restore position in file and state of dictionary
*/
void lzrestore(lzhandle *lzh);
/**
\brief call lzwritesave to save position in file and state of dictionary
*/
void lzsave(lzhandle *lzh);
/**
\brief call when done calling ulz
*/
void ulzfini(lzhandle *lzh);
#endif // LZ_H_
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