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Diffstat (limited to 'bin/gzip/gzip.c')
-rw-r--r--bin/gzip/gzip.c223
1 files changed, 89 insertions, 134 deletions
diff --git a/bin/gzip/gzip.c b/bin/gzip/gzip.c
index b0e20bb1..919ab7a2 100644
--- a/bin/gzip/gzip.c
+++ b/bin/gzip/gzip.c
@@ -14,23 +14,21 @@
#include <stdio.h> // for fprintf, stderr, perror, fileno, stdin, stdout
#include <string.h> // for strcpy, strcmp, strlen, strcat, memcmp, strncmp
-static char *license_msg[] = {
- " Copyright (C) 1992-1993 Jean-loup Gailly",
- " This program is free software; you can redistribute it and/or modify",
- " it under the terms of the GNU General Public License as published by",
- " the Free Software Foundation; either version 2, or (at your option)",
- " any later version.",
- "",
- " This program is distributed in the hope that it will be useful,",
- " but WITHOUT ANY WARRANTY; without even the implied warranty of",
- " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the",
- " GNU General Public License for more details.",
- "",
- " You should have received a copy of the GNU General Public License",
- " along with this program; if not, write to the Free Software",
- " Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.",
- 0
-};
+static char *license_msg[] = { " Copyright (C) 1992-1993 Jean-loup Gailly",
+ " This program is free software; you can redistribute it and/or modify",
+ " it under the terms of the GNU General Public License as published by",
+ " the Free Software Foundation; either version 2, or (at your option)",
+ " any later version.",
+ "",
+ " This program is distributed in the hope that it will be useful,",
+ " but WITHOUT ANY WARRANTY; without even the implied warranty of",
+ " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the",
+ " GNU General Public License for more details.",
+ "",
+ " You should have received a copy of the GNU General Public License",
+ " along with this program; if not, write to the Free Software",
+ " Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.",
+ 0 };
/* Compress files with zip algorithm and 'compress' interface.
* See usage() and help() functions below for all options.
@@ -98,23 +96,23 @@ int decompress_wanted;
int decompress; /* decompress (-d) */
#define decompress_wanted decompress
#endif
-int force; /* don't ask questions, compress links (-f) */
-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 */
-int verbose; /* be verbose (-v) */
-int quiet; /* be very quiet (-q) */
-int test; /* test .gz file integrity */
-int foreground; /* set if program run in foreground */
-char *progname; /* program name */
-int method = DEFLATED; /* compression method */
-int exit_code = OK; /* program exit code */
-int save_orig_name; /* set if original name must be saved */
-int last_member; /* set for .zip and .Z files */
-int part_nb; /* number of parts in .gz file */
-time_t time_stamp; /* original time stamp (modification time) */
-long ifile_size; /* input file size, -1 for devices (debug only) */
-char *env; /* contents of GZIP env variable */
-char **args = NULL; /* argv pointer if GZIP env variable defined */
+int force; /* don't ask questions, compress links (-f) */
+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 */
+int verbose; /* be verbose (-v) */
+int quiet; /* be very quiet (-q) */
+int test; /* test .gz file integrity */
+int foreground; /* set if program run in foreground */
+char *progname; /* program name */
+int method = DEFLATED; /* compression method */
+int exit_code = OK; /* program exit code */
+int save_orig_name; /* set if original name must be saved */
+int last_member; /* set for .zip and .Z files */
+int part_nb; /* number of parts in .gz file */
+time_t time_stamp; /* original time stamp (modification time) */
+long ifile_size; /* input file size, -1 for devices (debug only) */
+char *env; /* contents of GZIP env variable */
+char **args = NULL; /* argv pointer if GZIP env variable defined */
char z_suffix[MAX_SUFFIX + 1]; /* default suffix (can be set with --suffix) */
int z_len; /* strlen(z_suffix) */
@@ -167,39 +165,36 @@ local void reset_times OF((char *name, struct stat *statb));
/* ======================================================================== */
local void usage()
{
- fprintf(stderr, "usage: %s [-cdfhlLnNtvV19] [-S suffix] [file ...]\n",
- progname);
+ fprintf(stderr, "usage: %s [-cdfhlLnNtvV19] [-S suffix] [file ...]\n", progname);
}
/* ======================================================================== */
local void help()
{
- static char *help_msg[] = {
- " -c --stdout write on standard output, keep original files unchanged",
- " -d --decompress decompress",
- " -f --force force overwrite of output file and compress links",
- " -h --help give this help",
- " -L --license display software license",
+ static char *help_msg[] = { " -c --stdout write on standard output, keep original files unchanged",
+ " -d --decompress decompress",
+ " -f --force force overwrite of output file and compress links",
+ " -h --help give this help",
+ " -L --license display software license",
#ifdef UNDOCUMENTED
- " -m --no-time do not save or restore the original modification time",
- " -M --time save or restore the original modification time",
+ " -m --no-time do not save or restore the original modification time",
+ " -M --time save or restore the original modification time",
#endif
- " -n --no-name do not save or restore the original name and time stamp",
- " -N --name save or restore the original name and time stamp",
- " -q --quiet suppress all warnings",
- " -S .suf --suffix .suf use suffix .suf on compressed files",
- " -t --test test compressed file integrity",
- " -v --verbose verbose mode",
- " -V --version display version number",
+ " -n --no-name do not save or restore the original name and time stamp",
+ " -N --name save or restore the original name and time stamp",
+ " -q --quiet suppress all warnings",
+ " -S .suf --suffix .suf use suffix .suf on compressed files",
+ " -t --test test compressed file integrity",
+ " -v --verbose verbose mode",
+ " -V --version display version number",
#ifdef SUPPORT_ZIP
- " -1 --fast compress faster",
- " -9 --best compress better",
- " file... files to (de)compress. If none given, use standard input.",
+ " -1 --fast compress faster",
+ " -9 --best compress better",
+ " file... files to (de)compress. If none given, use standard input.",
#else
- " file... files to decompress. If none given, use standard input.",
+ " file... files to decompress. If none given, use standard input.",
#endif
- 0
- };
+ 0 };
char **p = help_msg;
fprintf(stderr, "%s %s (%s)\n", progname, VERSION, REVDATE);
@@ -280,8 +275,7 @@ int main(int argc, char **argv)
strncpy(z_suffix, Z_SUFFIX, sizeof(z_suffix) - 1);
z_len = strlen(z_suffix);
- while ((optc = getopt(argc, argv, "cdfhH?LmMnNqrS:tvV123456789")) !=
- EOF) {
+ while ((optc = getopt(argc, argv, "cdfhH?LmMnNqrS:tvV123456789")) != EOF) {
switch (optc) {
case 'c':
to_stdout = 1;
@@ -356,9 +350,7 @@ int main(int argc, char **argv)
#ifndef SUPPORT_ZIP
if (!decompress_wanted) {
- fprintf(stderr,
- "%s: this version does not support compression\n",
- progname);
+ fprintf(stderr, "%s: this version does not support compression\n", progname);
do_exit(ERROR);
}
#endif
@@ -374,8 +366,7 @@ int main(int argc, char **argv)
file_count = argc - optind;
if ((z_len == 0 && !decompress) || z_len > MAX_SUFFIX) {
- fprintf(stderr, "%s: incorrect suffix '%s'\n", progname,
- optarg);
+ fprintf(stderr, "%s: incorrect suffix '%s'\n", progname, optarg);
do_exit(ERROR);
}
@@ -418,10 +409,8 @@ local void treat_stdin()
*
* Here we use the --force option to get the other behavior.
*/
- fprintf(stderr,
- "%s: compressed data not %s a terminal. Use -f to force %scompression.\n",
- progname, decompress ? "read from" : "written to",
- decompress ? "de" : "");
+ fprintf(stderr, "%s: compressed data not %s a terminal. Use -f to force %scompression.\n", progname,
+ decompress ? "read from" : "written to", decompress ? "de" : "");
fprintf(stderr, "For help, type: %s -h\n", progname);
do_exit(ERROR);
}
@@ -472,13 +461,11 @@ local void treat_stdin()
fprintf(stderr, " OK\n");
} else if (!decompress) {
- display_ratio(bytes_in - (bytes_out - header_bytes),
- bytes_in, stderr);
+ display_ratio(bytes_in - (bytes_out - header_bytes), bytes_in, stderr);
fprintf(stderr, "\n");
#ifdef DISPLAY_STDIN_RATIO
} else {
- display_ratio(bytes_out - (bytes_in - header_bytes),
- bytes_out, stderr);
+ display_ratio(bytes_out - (bytes_in - header_bytes), bytes_out, stderr);
fprintf(stderr, "\n");
#endif
}
@@ -504,19 +491,15 @@ local void treat_file(char *iname)
/* If the input name is that of a directory, recurse or ignore: */
if (S_ISDIR(istat.st_mode)) {
- WARN((stderr, "%s: %s is a directory -- ignored\n", progname,
- ifname));
+ WARN((stderr, "%s: %s is a directory -- ignored\n", progname, ifname));
return;
}
if (!S_ISREG(istat.st_mode)) {
- WARN((stderr,
- "%s: %s is not a directory or a regular file - ignored\n",
- progname, ifname));
+ WARN((stderr, "%s: %s is not a directory or a regular file - ignored\n", progname, ifname));
return;
}
if (istat.st_nlink > 1 && !to_stdout && !force) {
- WARN((stderr, "%s: %s has %d other link%c -- unchanged\n",
- progname, ifname, (int)istat.st_nlink - 1,
+ WARN((stderr, "%s: %s has %d other link%c -- unchanged\n", progname, ifname, (int)istat.st_nlink - 1,
istat.st_nlink > 2 ? 's' : ' '));
return;
}
@@ -568,8 +551,7 @@ local void treat_file(char *iname)
return;
if (!decompress && save_orig_name && !verbose && !quiet) {
- fprintf(stderr, "%s: %s compressed to %s\n", progname,
- ifname, ofname);
+ fprintf(stderr, "%s: %s compressed to %s\n", progname, ifname, ofname);
}
}
/* Keep the name even if not truncated except with --no-name: */
@@ -578,9 +560,7 @@ local void treat_file(char *iname)
if (verbose) {
fprintf(stderr, "%s:\t%s", ifname,
- (int)strlen(ifname) >= 15 ?
- "" :
- ((int)strlen(ifname) >= 7 ? "\t" : "\t\t"));
+ (int)strlen(ifname) >= 15 ? "" : ((int)strlen(ifname) >= 7 ? "\t" : "\t\t"));
}
/* Actually do the compression/decompression. Loop over zipped members.
@@ -614,11 +594,9 @@ local void treat_file(char *iname)
if (test) {
fprintf(stderr, " OK");
} else if (decompress) {
- display_ratio(bytes_out - (bytes_in - header_bytes),
- bytes_out, stderr);
+ display_ratio(bytes_out - (bytes_in - header_bytes), bytes_out, stderr);
} else {
- display_ratio(bytes_in - (bytes_out - header_bytes),
- bytes_in, stderr);
+ display_ratio(bytes_in - (bytes_out - header_bytes), bytes_in, stderr);
}
if (!test && !to_stdout) {
fprintf(stderr, " -- replaced with %s", ofname);
@@ -677,8 +655,7 @@ local int create_outfile()
if (decompress) {
/* name might be too long if an original name was saved
*/
- WARN((stderr, "%s: %s: warning, name truncated\n",
- progname, ofname));
+ WARN((stderr, "%s: %s: warning, name truncated\n", progname, ofname));
return OK;
}
close(ofd);
@@ -717,8 +694,7 @@ local char *get_suffix(char *name)
int nlen, slen;
char suffix[MAX_SUFFIX + 3]; /* last chars of name, forced to lower case
*/
- static char *known_suffixes[] = { z_suffix, ".gz", ".z", ".taz", ".tgz",
- "-gz", "-z", "_z", NULL };
+ static char *known_suffixes[] = { z_suffix, ".gz", ".z", ".taz", ".tgz", "-gz", "-z", "_z", NULL };
char **suf = known_suffixes;
if (strequ(z_suffix, "z"))
@@ -734,8 +710,7 @@ local char *get_suffix(char *name)
slen = strlen(suffix);
do {
int s = strlen(*suf);
- if (slen > s && suffix[slen - s - 1] != PATH_SEP &&
- strequ(suffix + slen - s, *suf)) {
+ if (slen > s && suffix[slen - s - 1] != PATH_SEP && strequ(suffix + slen - s, *suf)) {
return name + nlen - s;
}
} while (*++suf != NULL);
@@ -820,9 +795,7 @@ local int make_ofname()
/* Avoid annoying messages with -r */
if (verbose || !quiet) {
- WARN((stderr,
- "%s: %s: unknown suffix -- ignored\n",
- progname, ifname));
+ WARN((stderr, "%s: %s: unknown suffix -- ignored\n", progname, ifname));
}
return WARNING;
}
@@ -839,9 +812,7 @@ local int make_ofname()
} else if (suff != NULL) {
/* Avoid annoying messages with -r (see treat_dir()) */
if (verbose || !quiet) {
- fprintf(stderr,
- "%s: %s already has %s suffix -- unchanged\n",
- progname, ifname, suff);
+ fprintf(stderr, "%s: %s already has %s suffix -- unchanged\n", progname, ifname, suff);
}
if (exit_code == OK)
exit_code = WARNING;
@@ -889,13 +860,11 @@ local int get_method()
/* assume multiple members in gzip file except for record oriented I/O
*/
- if (memcmp(magic, GZIP_MAGIC, 2) == 0 ||
- memcmp(magic, OLD_GZIP_MAGIC, 2) == 0) {
+ if (memcmp(magic, GZIP_MAGIC, 2) == 0 || memcmp(magic, OLD_GZIP_MAGIC, 2) == 0) {
method = (int)get_byte();
if (method != DEFLATED) {
- fprintf(stderr,
- "%s: %s: unknown method %d -- get newer version of gzip\n",
- progname, ifname, method);
+ fprintf(stderr, "%s: %s: unknown method %d -- get newer version of gzip\n", progname, ifname,
+ method);
exit_code = ERROR;
return -1;
}
@@ -903,24 +872,20 @@ local int get_method()
flags = (uch)get_byte();
if ((flags & ENCRYPTED) != 0) {
- fprintf(stderr,
- "%s: %s is encrypted -- get newer version of gzip\n",
- progname, ifname);
+ fprintf(stderr, "%s: %s is encrypted -- get newer version of gzip\n", progname, ifname);
exit_code = ERROR;
return -1;
}
if ((flags & CONTINUATION) != 0) {
- fprintf(stderr,
- "%s: %s is a a multi-part gzip file -- get newer version of gzip\n",
- progname, ifname);
+ fprintf(stderr, "%s: %s is a a multi-part gzip file -- get newer version of gzip\n", progname,
+ ifname);
exit_code = ERROR;
if (force <= 1)
return -1;
}
if ((flags & RESERVED) != 0) {
- fprintf(stderr,
- "%s: %s has flags 0x%x -- get newer version of gzip\n",
- progname, ifname, flags);
+ fprintf(stderr, "%s: %s has flags 0x%x -- get newer version of gzip\n", progname, ifname,
+ flags);
exit_code = ERROR;
if (force <= 1)
return -1;
@@ -939,17 +904,14 @@ local int get_method()
unsigned part = (unsigned)get_byte();
part |= ((unsigned)get_byte()) << 8;
if (verbose) {
- fprintf(stderr, "%s: %s: part number %u\n",
- progname, ifname, part);
+ fprintf(stderr, "%s: %s: part number %u\n", progname, ifname, part);
}
}
if ((flags & EXTRA_FIELD) != 0) {
unsigned len = (unsigned)get_byte();
len |= ((unsigned)get_byte()) << 8;
if (verbose) {
- fprintf(stderr,
- "%s: %s: extra field of %u bytes ignored\n",
- progname, ifname, len);
+ fprintf(stderr, "%s: %s: extra field of %u bytes ignored\n", progname, ifname, len);
}
while (len--)
(void)get_byte();
@@ -998,13 +960,11 @@ local int get_method()
return method;
if (part_nb == 1) {
- fprintf(stderr, "\n%s: %s: not in gzip format\n", progname,
- ifname);
+ fprintf(stderr, "\n%s: %s: not in gzip format\n", progname, ifname);
exit_code = ERROR;
return -1;
}
- WARN((stderr, "\n%s: %s: decompression OK, trailing garbage ignored\n",
- progname, ifname));
+ WARN((stderr, "\n%s: %s: decompression OK, trailing garbage ignored\n", progname, ifname));
return -2;
}
@@ -1017,12 +977,9 @@ local int same_file(struct stat *stat1, struct stat *stat2)
stat1->st_dev == stat2->st_dev
#ifdef NO_ST_INO
/* Can't rely on st_ino and st_dev, use other fields: */
- && stat1->st_mode == stat2->st_mode &&
- stat1->st_uid == stat2->st_uid &&
- stat1->st_gid == stat2->st_gid &&
- stat1->st_size == stat2->st_size &&
- stat1->st_atime == stat2->st_atime &&
- stat1->st_mtime == stat2->st_mtime &&
+ && stat1->st_mode == stat2->st_mode && stat1->st_uid == stat2->st_uid &&
+ stat1->st_gid == stat2->st_gid && stat1->st_size == stat2->st_size &&
+ stat1->st_atime == stat2->st_atime && stat1->st_mtime == stat2->st_mtime &&
stat1->st_ctime == stat2->st_ctime
#endif
;
@@ -1160,12 +1117,10 @@ local int check_ofname()
*/
if (same_file(&istat, &ostat)) {
if (strequ(ifname, ofname)) {
- fprintf(stderr,
- "%s: %s: cannot %scompress onto itself\n",
- progname, ifname, decompress ? "de" : "");
+ fprintf(stderr, "%s: %s: cannot %scompress onto itself\n", progname, ifname,
+ decompress ? "de" : "");
} else {
- fprintf(stderr, "%s: %s and %s are the same file\n",
- progname, ifname, ofname);
+ fprintf(stderr, "%s: %s and %s are the same file\n", progname, ifname, ofname);
}
exit_code = ERROR;
return ERROR;
generated by cgit v1.2.3 (git 2.39.1) at 2026-04-05 14:27:20 +0000