Package: gzip
Version: 1.3.12
bzip2 gives a -k or --keep option which prevents the source files from
being deleted. gzip does not have this. It is highly useful when a
number of files have to be compressed/decompressed. Otherwise we are
forced to write a for x in $(ls *.gz) kind of script when just two
letters "-k" will solve the problem.
I created a patch for this.
Shriramana Sharma.
--- gzip.c.orig 2007-03-20 10:39:51.000000000 +0530
+++ gzip.c 2007-04-15 17:32:43.000000000 +0530
@@ -189,6 +189,7 @@
int recursive = 0; /* recurse through directories (-r) */
int list = 0; /* list the file contents (-l) */
int verbose = 0; /* be verbose (-v) */
+int keep_input_files = 0; /* do not delete input files */
int quiet = 0; /* be very quiet (-q) */
int do_lzw = 0; /* generate output compatible with old compress (-Z) */
int test = 0; /* test .gz file integrity */
@@ -243,7 +244,8 @@
/* {"encrypt", 0, 0, 'e'}, encrypt */
{"force", 0, 0, 'f'}, /* force overwrite of output file */
{"help", 0, 0, 'h'}, /* give help */
- /* {"pkzip", 0, 0, 'k'}, force output in pkzip format */
+ /* {"pkzip", 0, 0, 'k'}, force output in pkzip format */ /* IF THIS IS ENABLED IT WILL CONFLICT WITH "KEEP" */
+ {"keep", 0, 0, 'k'}, /* keep input files */
{"list", 0, 0, 'l'}, /* list .gz file contents */
{"license", 0, 0, 'L'}, /* display software license */
{"no-name", 0, 0, 'n'}, /* don't save or restore original name & time */
@@ -318,7 +320,8 @@
/* -e, --encrypt encrypt */
" -f, --force force overwrite of output file and compress links",
" -h, --help give this help",
-/* -k, --pkzip force output in pkzip format */
+/* -k, --pkzip force output in pkzip format */ /* IF THIS IS ENABLED IT WILL CONFLICT WITH "KEEP" */
+ " -k, --keep keep (don't delete) input files",
" -l, --list list compressed file contents",
" -L, --license display software license",
#ifdef UNDOCUMENTED
@@ -417,13 +420,13 @@
decompress = 1;
else if (strequ (program_name + 1, "cat") /* zcat, pcat, gcat */
|| strequ (program_name, "gzcat")) /* gzcat */
- decompress = to_stdout = 1;
+ decompress = to_stdout = keep_input_files = 1;
#endif
z_suffix = Z_SUFFIX;
z_len = strlen(z_suffix);
- while ((optc = getopt_long (argc, argv, "ab:cdfhH?lLmMnNqrS:tvVZ123456789",
+ while ((optc = getopt_long (argc, argv, "ab:cdfhH?klLmMnNqrS:tvVZ123456789",
longopts, (int *)0)) != -1) {
switch (optc) {
case 'a':
@@ -439,15 +442,17 @@
}
break;
case 'c':
- to_stdout = 1; break;
+ to_stdout = keep_input_files = 1; break;
case 'd':
decompress = 1; break;
+ case 'k':
+ keep_input_files = 1; break;
case 'f':
force++; break;
case 'h': case 'H':
help(); do_exit(OK); break;
case 'l':
- list = decompress = to_stdout = 1; break;
+ list = decompress = to_stdout = keep_input_files = 1; break;
case 'L':
license(); do_exit(OK); break;
case 'm': /* undocumented, may change later */
@@ -477,7 +482,7 @@
z_suffix = optarg;
break;
case 't':
- test = decompress = to_stdout = 1;
+ test = decompress = to_stdout = keep_input_files = 1;
break;
case 'v':
verbose++; quiet = 0; break;
@@ -701,7 +706,7 @@
return;
}
- if (! to_stdout)
+ if (! keep_input_files)
{
if (! S_ISREG (istat.st_mode))
{
@@ -822,12 +827,13 @@
if (close (ifd) != 0)
read_error ();
- if (!to_stdout)
+ if (!to_stdout) copy_stat (&istat);
+
+ if (!keep_input_files)
{
sigset_t oldset;
int unlink_errno;
- copy_stat (&istat);
if (close (ofd) != 0)
write_error ();
