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11 Commits

Author SHA1 Message Date
Xin LI
140c037a0c Incorporate recent changes from NetBSD. Most notable change is the addition 
of support of decompressing xz files.

Obtained from:	NetBSD
 2011-10-10 06:37:32 +00:00
Xin LI
fc26891004 Match symbolic link handling behavior with GNU gzip, bzip2 and xz: 
When we are operating on a symbolic link pointing to an existing
file, bail out by default, but go ahead if -f is specified.

Submitted by:	arundel
MFC after:	2 weeks
 2011-05-23 09:40:21 +00:00
Xin LI
1edd4fcd23 Language improvements to make the BUGS section easier to read. 
Reviewed by:	Alexander Best <alexbestms wwu de>
MFC after:	13 days
 2010-04-27 17:50:43 +00:00
Xin LI
feeb03b2c8 Diff reduction against NetBSD and add myself to AUTHORS section of the 
manual page as I wrote the unpack functionality.  No actual executable
code change verified with md5(1).
 2010-04-07 22:54:53 +00:00
Xin LI
b47ed83de8 Sync with NetBSD: 
- gzip -n does not store timestamp; [1]
 - Reduce diff against NetBSD by moving some casts in our local
   versions.

PR:		bin/134955
Obtained from:	NetBSD
MFC after:	1 month
 2009-06-24 21:51:02 +00:00
Xin LI
bf15662677 Sync with NetBSD's license changes. 2008-07-23 00:03:36 +00:00
Xin LI
0889440a08 Make it clear that gzcat expects each argument to be separate files. 
PR:		docs/123010
Submitted by:	Andrew Wright <andrewhw ieee org>
MFC after:	2 weeks
 2008-06-30 17:45:47 +00:00
Xin LI
bca072af62 Mention 'k' option of gunzip. 
Pointed out by:	ighighi gmail.com
 2007-06-06 02:51:54 +00:00
Xin LI
2a8e7ac9c8 Add a '-k' flag which is similar with its bzip2(1) counterpart, 
meaning that the user wants the input file to be left intact.

Feature request: Ighighi <ighighi gmail.com>
PR:		 bin/103006
MFC after:	 1 month
 2007-05-28 08:20:46 +00:00
Xin LI
2bab61b0b4 Mention a limitation that was inherted from RFC1952, making 
it impossible to obtain correct file size from a file that
is larger than 4GB before compression.

PR:		bin/110329
MFC after:	1 week
 2007-03-16 03:50:53 +00:00
Xin LI
9a9ea25f4a Replace the GNU gzip with a slightly modified NetBSD gzip. The 
NetBSD version is a feature-to-feature re-implementation of GNU
gzip using the freely-redistributable zlib and this version is
expected to be mostly bug-to-bug compatible with the GNU
implementation.

 - Because this is a piece of mature code and we want to make
   changes so it is added directly rather than importing to
   src/contrib.
 - Connect newly added code to src/usr.bin/ and rescue/rescue
   build.
 - Disconnect the GNU gzip code from build for now, they will
   be eventually removed completely.
 - Provide two new src.conf(5) knobs, WITHOUT_BZIP2_SUPPORT and
   WITHOUT_BZIP2.

Tested by:	kris (full exp-7 pointyhat build)
Approved by:	core (importing a 4-clause BSD licensed file)
Approved by:	re (adding new utility during -HEAD code slush)
 2007-01-26 10:19:08 +00:00