#include "internal.h"
#ifdef BB_GZIP
-#ifndef BB_ZCAT
-error: you need zcat to have gzip support!
-#endif
+//#ifndef BB_ZCAT
+//#error you need zcat to have gzip support!
+//#endif
+
+static const char gzip_usage[] =
+ "gzip [OPTION]... FILE\n\n"
+ "Compress FILE with maximum compression.\n"
+ "When FILE is -, reads standard input. Implies -c.\n\n"
+ "Options:\n"
+ "\t-c\tWrite output to standard output instead of FILE.gz\n";
-const char gzip_usage[] = "gzip\nignores all command line arguments\ncompress stdin to stdout with -9 compression\n";
/* gzip.h -- common declarations for all gzip modules
* Copyright (C) 1992-1993 Jean-loup Gailly.
extern int verbose; /* be verbose (-v) */
extern int quiet; /* be quiet (-q) */
extern int test; /* check .z file integrity */
-extern int to_stdout; /* output to stdout (-c) */
extern int save_orig_name; /* set if original name must be saved */
#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf(0))
#define WARN(msg) {if (!quiet) fprintf msg ; \
if (exit_code == OK) exit_code = WARNING;}
-local void do_exit(int exitcode);
+local void do_exit(int exitcode) __attribute__ ((noreturn));
/* in zip.c: */
extern int zip OF((int in, int out));
# undef LZW
#endif
-/* $Id: gzip.c,v 1.1 1999/10/05 16:24:56 andersen Exp $ */
/* tailor.h -- target dependent definitions
* Copyright (C) 1992-1993 Jean-loup Gailly.
* This is free software; you can redistribute it and/or modify it under the
* The target dependent functions should be defined in tailor.c.
*/
-/* $Id: gzip.c,v 1.1 1999/10/05 16:24:56 andersen Exp $ */
#if defined(__MSDOS__) && !defined(MSDOS)
# define MSDOS
# include <stdio.h>
#endif
-#ifdef RCSID
-static char rcsid[] = "$Id: gzip.c,v 1.1 1999/10/05 16:24:56 andersen Exp $";
-#endif
-
/* ===========================================================================
* Local data used by the "bit string" routines.
*/
#include <stdio.h>
-#ifdef RCSID
-static char rcsid[] = "$Id: gzip.c,v 1.1 1999/10/05 16:24:56 andersen Exp $";
-#endif
-
/* ===========================================================================
* Configuration parameters
*/
* For the meaning of all compilation flags, see comments in Makefile.in.
*/
-#ifdef RCSID
-static char rcsid[] = "$Id: gzip.c,v 1.1 1999/10/05 16:24:56 andersen Exp $";
-#endif
-
#include <ctype.h>
#include <sys/types.h>
#include <signal.h>
/* local variables */
int ascii = 0; /* convert end-of-lines to local OS conventions */
-int to_stdout = 0; /* output to stdout (-c) */
int decompress = 0; /* decompress (-d) */
int no_name = -1; /* don't save or restore the original file name */
int no_time = -1; /* don't save or restore the original file time */
/* local functions */
-local void treat_stdin OF((void));
-static int (*work) OF((int infile, int outfile)) = zip; /* function to call */
-
#define strequ(s1, s2) (strcmp((s1),(s2)) == 0)
/* ======================================================================== */
// int main (argc, argv)
// int argc;
// char **argv;
-int gzip_main(struct FileInfo * i, int argc, char * * argv)
+int gzip_main(int argc, char ** argv)
{
+ int result;
+ int inFileNum;
+ int outFileNum;
+ struct stat statBuf;
+ char* delFileName;
+ int tostdout = 0;
+ int fromstdin = 0;
+
+ if (argc==1)
+ usage(gzip_usage);
+
+ /* Parse any options */
+ while (--argc > 0 && **(++argv) == '-') {
+ if (*((*argv)+1) == '\0') {
+ fromstdin = 1;
+ tostdout = 1;
+ }
+ while (*(++(*argv))) {
+ switch (**argv) {
+ case 'c':
+ tostdout = 1;
+ break;
+ default:
+ usage(gzip_usage);
+ }
+ }
+ }
+
foreground = signal(SIGINT, SIG_IGN) != SIG_IGN;
if (foreground) {
(void) signal (SIGINT, (sig_type)abort_gzip);
strncpy(z_suffix, Z_SUFFIX, sizeof(z_suffix)-1);
z_len = strlen(z_suffix);
- to_stdout = 1;
-
/* Allocate all global buffers (for DYN_ALLOC option) */
ALLOC(uch, inbuf, INBUFSIZ +INBUF_EXTRA);
ALLOC(uch, outbuf, OUTBUFSIZ+OUTBUF_EXTRA);
ALLOC(ush, tab_prefix1, 1L<<(BITS-1));
#endif
- /* And get to work */
- treat_stdin();
- do_exit(exit_code);
- return exit_code; /* just to avoid lint warning */
-}
+ if (fromstdin==1) {
+ strcpy(ofname, "stdin");
-/* ========================================================================
- * Compress or decompress stdin
- */
-local void treat_stdin()
-{
+ inFileNum=fileno(stdin);
+ time_stamp = 0; /* time unknown by default */
+ ifile_size = -1L; /* convention for unknown size */
+ } else {
+ /* Open up the input file */
+ if (*argv=='\0')
+ usage(gzip_usage);
+ strncpy(ifname, *argv, MAX_PATH_LEN);
+
+ /* Open input fille */
+ inFileNum=open( ifname, O_RDONLY);
+ if (inFileNum < 0) {
+ perror(ifname);
+ do_exit(WARNING);
+ }
+ /* Get the time stamp on the input file. */
+ result = stat(ifname, &statBuf);
+ if (result < 0) {
+ perror(ifname);
+ do_exit(WARNING);
+ }
+ time_stamp = statBuf.st_ctime;
+ ifile_size = statBuf.st_size;
+ }
+
+
+ if (tostdout==1) {
+ /* And get to work */
+ strcpy(ofname, "stdout");
+ outFileNum=fileno(stdout);
SET_BINARY_MODE(fileno(stdout));
- strcpy(ifname, "stdin");
- strcpy(ofname, "stdout");
- /* Get the time stamp on the input file. */
- time_stamp = 0; /* time unknown by default */
+ clear_bufs(); /* clear input and output buffers */
+ part_nb = 0;
- ifile_size = -1L; /* convention for unknown size */
+ /* Actually do the compression/decompression. */
+ zip(inFileNum, outFileNum);
- clear_bufs(); /* clear input and output buffers */
- to_stdout = 1;
- part_nb = 0;
+ } else {
- /* Actually do the compression/decompression. Loop over zipped members.
- */
- if ((*work)(fileno(stdin), fileno(stdout)) != OK) return;
+ /* And get to work */
+ strncpy(ofname, ifname, MAX_PATH_LEN-4);
+ strcat(ofname, ".gz");
+
+
+ /* Open output fille */
+ outFileNum=open( ofname, O_RDWR|O_CREAT|O_EXCL|O_NOFOLLOW);
+ if (outFileNum < 0) {
+ perror(ofname);
+ do_exit(WARNING);
+ }
+ SET_BINARY_MODE(outFileNum);
+ /* Set permissions on the file */
+ fchmod(outFileNum, statBuf.st_mode);
+
+ clear_bufs(); /* clear input and output buffers */
+ part_nb = 0;
+
+ /* Actually do the compression/decompression. */
+ result=zip(inFileNum, outFileNum);
+ close( outFileNum);
+ close( inFileNum);
+ /* Delete the original file */
+ if (result == OK)
+ delFileName=ifname;
+ else
+ delFileName=ofname;
+
+ if (unlink (delFileName) < 0) {
+ perror (delFileName);
+ exit( FALSE);
+ }
+ }
+
+ do_exit(exit_code);
}
/* ========================================================================
#include <ctype.h>
-#ifdef RCSID
-static char rcsid[] = "$Id: gzip.c,v 1.1 1999/10/05 16:24:56 andersen Exp $";
-#endif
-
/* ===========================================================================
* Constants
*/
* terms of the GNU General Public License, see the file COPYING.
*/
-#ifdef RCSID
-static char rcsid[] = "$Id: gzip.c,v 1.1 1999/10/05 16:24:56 andersen Exp $";
-#endif
-
#include <ctype.h>
#include <errno.h>
#include <sys/types.h>
extern int errno;
#endif
-extern ulg crc_32_tab[]; /* crc table, defined below */
-
/* ===========================================================================
* Copy input to output unchanged: zcat == cat with --force.
* IN assertion: insize bytes have already been read in inbuf.
* terms of the GNU General Public License, see the file COPYING.
*/
-#ifdef RCSID
-static char rcsid[] = "$Id: gzip.c,v 1.1 1999/10/05 16:24:56 andersen Exp $";
-#endif
-
#include <ctype.h>
#include <sys/types.h>
/* Write the header to the gzip file. See algorithm.doc for the format */
+
method = DEFLATED;
put_byte(GZIP_MAGIC[0]); /* magic header */
put_byte(GZIP_MAGIC[1]);
projects / oweals / busybox.git / blobdiff