File: [local] / src / usr.bin / compress / compress.h (download)
Revision 1.6, Thu Jul 17 20:06:01 2003 UTC (20 years, 10 months ago) by millert
Branch: MAIN
Changes since 1.5: +23 -10 lines
o implement -l, -n and -N (including setting outfile + mtime)
o make -v behave like GNU gzip for compress/decompress stats
o write a full gzip header w/ mtime and file name
o for -t/-l just don't write data instead of writing to /dev/null
o exit code is now more consistent with GNU gzip
o a crc error on decompress no longer causes unlink(outfile)
mickey@ OK
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/* $OpenBSD: compress.h,v 1.6 2003/07/17 20:06:01 millert Exp $ */
/*
* Copyright (c) 1997 Michael Shalayeff
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
struct z_info {
u_int32_t mtime; /* timestamp */
u_int32_t crc; /* crc */
u_int32_t hlen; /* header length */
u_int64_t total_in; /* # bytes in */
u_int64_t total_out; /* # bytes out */
};
/*
* making it any bigger does not affect perfomance very much.
* actually this value is just a little bit better than 8192.
*/
#define Z_BUFSIZE 16384
/*
* exit codes for compress
*/
#define SUCCESS 0
#define FAILURE 1
#define WARNING 2
extern const char main_rcsid[], z_rcsid[], gz_rcsid[], pkzip_rcsid[],
pack_rcsid[], lzh_rcsid[];
extern void *z_open(int, const char *, char *, int, u_int32_t, int);
extern FILE *zopen(const char *, const char *,int);
extern int zread(void *, char *, int);
extern int zwrite(void *, const char *, int);
extern int z_close(void *, struct z_info *);
extern void *gz_open(int, const char *, char *, int, u_int32_t, int);
extern int gz_read(void *, char *, int);
extern int gz_write(void *, const char *, int);
extern int gz_close(void *, struct z_info *);
extern int gz_flush(void *, int);
extern void *lzh_open(int, const char *, char *, int, u_int32_t, int);
extern int lzh_read(void *, char *, int);
extern int lzh_write(void *, const char *, int);
extern int lzh_close(void *, struct z_info *);
extern int lzh_flush(void *, int);