Upates to include copyright 2000 to everything
-Erik
This commit is contained in:
Erik Andersen
193
archival/gzip.c
193
archival/gzip.c
@@ -1,16 +1,42 @@
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/* vi: set sw=4 ts=4: */
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/* gzip.c -- this is a stripped down version of gzip I put into busybox, it does
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* only standard in to standard out with -9 compression. It also requires the
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* zcat module for some important functions.
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/*
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* Gzip implementation for busybox
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*
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* Based on GNU gzip Copyright (C) 1992-1993 Jean-loup Gailly.
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*
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* Originally adjusted for busybox by Charles P. Wright <cpw@unix.asb.com>
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* "this is a stripped down version of gzip I put into busybox, it does
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* only standard in to standard out with -9 compression. It also requires
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* the zcat module for some important functions."
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*
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* Adjusted further by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
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* to support files as well as stdin/stdout, and to generally behave itself wrt
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* command line handling.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Charles P. Wright <cpw@unix.asb.com>
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*/
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#include "internal.h"
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#ifdef BB_GZIP
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//#ifndef BB_ZCAT
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//#error you need zcat to have gzip support!
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//#endif
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#include "internal.h"
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/* These defines are very important for BusyBox. Without these,
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* huge chunks of ram are pre-allocated making the BusyBox bss
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* size Freaking Huge(tm), which is a bad thing.*/
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#define SMALL_MEM
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#define DYN_ALLOC
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static const char gzip_usage[] =
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"gzip [OPTION]... FILE\n\n"
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@@ -21,42 +47,12 @@ static const char gzip_usage[] =
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"\t-c\tWrite output to standard output instead of FILE.gz\n";
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/* gzip.h -- common declarations for all gzip modules
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* Copyright (C) 1992-1993 Jean-loup Gailly.
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* This is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License, see the file COPYING.
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*/
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#if defined(__STDC__) || defined(PROTO)
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# define OF(args) args
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#else
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# define OF(args) ()
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#endif
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#ifdef __STDC__
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typedef void *voidp;
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#else
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typedef char *voidp;
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#endif
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/* I don't like nested includes, but the string and io functions are used
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* too often
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*/
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#include <stdio.h>
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#if !defined(NO_STRING_H) || defined(STDC_HEADERS)
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# include <string.h>
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# if !defined(STDC_HEADERS) && !defined(NO_MEMORY_H) && !defined(__GNUC__)
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# include <memory.h>
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# endif
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# define memzero(s, n) memset ((voidp)(s), 0, (n))
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#else
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# include <strings.h>
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# define strchr index
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# define strrchr rindex
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# define memcpy(d, s, n) bcopy((s), (d), (n))
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# define memcmp(s1, s2, n) bcmp((s1), (s2), (n))
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# define memzero(s, n) bzero((s), (n))
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#endif
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#include <string.h>
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#define memzero(s, n) memset ((void *)(s), 0, (n))
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#ifndef RETSIGTYPE
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# define RETSIGTYPE void
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@@ -121,13 +117,13 @@ extern int method; /* compression method */
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#endif
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#ifdef DYN_ALLOC
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# define EXTERN(type, array) extern type * near array
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# define DECLARE(type, array, size) type * near array
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# define EXTERN(type, array) extern type * array
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# define DECLARE(type, array, size) type * array
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# define ALLOC(type, array, size) { \
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array = (type*)fcalloc((size_t)(((size)+1L)/2), 2*sizeof(type)); \
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array = (type*)calloc((size_t)(((size)+1L)/2), 2*sizeof(type)); \
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if (array == NULL) errorMsg("insufficient memory"); \
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}
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# define FREE(array) {if (array != NULL) fcfree(array), array=NULL;}
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# define FREE(array) {if (array != NULL) free(array), array=NULL;}
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#else
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# define EXTERN(type, array) extern type array[]
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# define DECLARE(type, array, size) type array[size]
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@@ -284,55 +280,55 @@ extern int save_orig_name; /* set if original name must be saved */
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/* in zip.c: */
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extern int zip OF((int in, int out));
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extern int file_read OF((char *buf, unsigned size));
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extern int zip (int in, int out);
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extern int file_read (char *buf, unsigned size);
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/* in unzip.c */
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extern int unzip OF((int in, int out));
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extern int check_zipfile OF((int in));
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extern int unzip (int in, int out);
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extern int check_zipfile (int in);
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/* in unpack.c */
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extern int unpack OF((int in, int out));
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extern int unpack (int in, int out);
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/* in unlzh.c */
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extern int unlzh OF((int in, int out));
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extern int unlzh (int in, int out);
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/* in gzip.c */
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RETSIGTYPE abort_gzip OF((void));
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RETSIGTYPE abort_gzip (void);
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/* in deflate.c */
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void lm_init OF((ush * flags));
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ulg deflate OF((void));
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void lm_init (ush * flags);
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ulg deflate (void);
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/* in trees.c */
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void ct_init OF((ush * attr, int *method));
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int ct_tally OF((int dist, int lc));
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ulg flush_block OF((char *buf, ulg stored_len, int eof));
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void ct_init (ush * attr, int *method);
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int ct_tally (int dist, int lc);
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ulg flush_block (char *buf, ulg stored_len, int eof);
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/* in bits.c */
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void bi_init OF((file_t zipfile));
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void send_bits OF((int value, int length));
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unsigned bi_reverse OF((unsigned value, int length));
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void bi_windup OF((void));
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void copy_block OF((char *buf, unsigned len, int header));
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extern int (*read_buf) OF((char *buf, unsigned size));
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void bi_init (file_t zipfile);
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void send_bits (int value, int length);
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unsigned bi_reverse (unsigned value, int length);
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void bi_windup (void);
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void copy_block (char *buf, unsigned len, int header);
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extern int (*read_buf) (char *buf, unsigned size);
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/* in util.c: */
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extern int copy OF((int in, int out));
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extern ulg updcrc OF((uch * s, unsigned n));
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extern void clear_bufs OF((void));
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extern int fill_inbuf OF((int eof_ok));
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extern void flush_outbuf OF((void));
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extern void flush_window OF((void));
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extern void write_buf OF((int fd, voidp buf, unsigned cnt));
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extern char *strlwr OF((char *s));
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extern char *add_envopt OF((int *argcp, char ***argvp, char *env));
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extern void read_error OF((void));
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extern void write_error OF((void));
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extern void display_ratio OF((long num, long den, FILE * file));
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extern int copy (int in, int out);
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extern ulg updcrc (uch * s, unsigned n);
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extern void clear_bufs (void);
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extern int fill_inbuf (int eof_ok);
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extern void flush_outbuf (void);
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extern void flush_window (void);
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extern void write_buf (int fd, void * buf, unsigned cnt);
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extern char *strlwr (char *s);
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extern char *add_envopt (int *argcp, char ***argvp, char *env);
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extern void read_error (void);
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extern void write_error (void);
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extern void display_ratio (long num, long den, FILE * file);
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/* in inflate.c */
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extern int inflate OF((void));
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extern int inflate (void);
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/* lzw.h -- define the lzw functions.
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* Copyright (C) 1992-1993 Jean-loup Gailly.
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@@ -795,7 +791,7 @@ local int bi_valid;
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* are always zero.
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*/
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int (*read_buf) OF((char *buf, unsigned size));
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int (*read_buf) (char *buf, unsigned size);
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/* Current input function. Set to mem_read for in-memory compression */
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@@ -1148,16 +1144,16 @@ local config configuration_table =
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/* ===========================================================================
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* Prototypes for local functions.
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*/
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local void fill_window OF((void));
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local void fill_window (void);
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int longest_match OF((IPos cur_match));
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int longest_match (IPos cur_match);
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#ifdef ASMV
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void match_init OF((void)); /* asm code initialization */
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void match_init (void); /* asm code initialization */
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#endif
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#ifdef DEBUG
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local void check_match OF((IPos start, IPos match, int length));
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local void check_match (IPos start, IPos match, int length);
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#endif
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/* ===========================================================================
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@@ -1708,7 +1704,7 @@ struct utimbuf {
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# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#endif
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typedef RETSIGTYPE(*sig_type) OF((int));
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typedef RETSIGTYPE(*sig_type) (int);
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#ifndef O_BINARY
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# define O_BINARY 0 /* creation mode for open() */
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@@ -1743,7 +1739,7 @@ typedef RETSIGTYPE(*sig_type) OF((int));
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#ifdef NO_OFF_T
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typedef long off_t;
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off_t lseek OF((int fd, off_t offset, int whence));
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off_t lseek (int fd, off_t offset, int whence);
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#endif
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/* Separator for file name parts (see shorten_name()) */
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@@ -2246,17 +2242,17 @@ extern unsigned near strstart; /* window offset of current string */
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* Local (static) routines in this file.
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*/
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local void init_block OF((void));
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local void pqdownheap OF((ct_data near * tree, int k));
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local void gen_bitlen OF((tree_desc near * desc));
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local void gen_codes OF((ct_data near * tree, int max_code));
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local void build_tree OF((tree_desc near * desc));
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local void scan_tree OF((ct_data near * tree, int max_code));
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local void send_tree OF((ct_data near * tree, int max_code));
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local int build_bl_tree OF((void));
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local void send_all_trees OF((int lcodes, int dcodes, int blcodes));
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local void compress_block OF((ct_data near * ltree, ct_data near * dtree));
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local void set_file_type OF((void));
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local void init_block (void);
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local void pqdownheap (ct_data near * tree, int k);
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local void gen_bitlen (tree_desc near * desc);
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local void gen_codes (ct_data near * tree, int max_code);
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local void build_tree (tree_desc near * desc);
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local void scan_tree (ct_data near * tree, int max_code);
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local void send_tree (ct_data near * tree, int max_code);
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local int build_bl_tree (void);
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local void send_all_trees (int lcodes, int dcodes, int blcodes);
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local void compress_block (ct_data near * ltree, ct_data near * dtree);
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local void set_file_type (void);
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#ifndef DEBUG
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@@ -3161,12 +3157,8 @@ char *s;
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/* Provide missing strspn and strcspn functions. */
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# ifndef __STDC__
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# define const
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# endif
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int strspn OF((const char *s, const char *accept));
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int strcspn OF((const char *s, const char *reject));
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int strspn (const char *s, const char *accept);
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int strcspn (const char *s, const char *reject);
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/* ========================================================================
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* Return the length of the maximum initial segment
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@@ -3398,4 +3390,3 @@ unsigned size;
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isize += (ulg) len;
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return (int) len;
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}
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#endif
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