File: [local] / src / usr.bin / compress / compress.h (download)
Revision 1.10, Sun Jul 27 13:15:31 2008 UTC (15 years, 10 months ago) by sobrado
Branch: MAIN
CVS Tags: OPENBSD_4_4_BASE, OPENBSD_4_4 Changes since 1.9: +6 -7 lines
an enum specifier is more elegant than a set of #defines;
storing the program mode variable (pmode) as a global let us have
a more consistent prototype for usage().
changes suggested by pyr@.
ok pyr@
|
/* $OpenBSD: compress.h,v 1.10 2008/07/27 13:15:31 sobrado 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.
*
*/
#include <sys/stat.h>
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
enum program_mode {
MODE_COMP,
MODE_DECOMP,
MODE_CAT
} pmode;
/*
* 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[], null_rcsid[];
extern char null_magic[];
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 *, const char *, struct stat *);
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 *, const char *, struct stat *);
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);
extern void *null_open(int, const char *, char *, int, u_int32_t, int);
extern int null_read(void *, char *, int);
extern int null_write(void *, const char *, int);
extern int null_close(void *, struct z_info *, const char *, struct stat *);
extern int null_flush(void *, int);
extern void setfile(const char *, int, struct stat *);