[Lzip-bug] Xlunzip 0.6 released

[Antonio Diaz Diaz]

I am pleased to announce the release of xlunzip 0.6.

Xlunzip is a test tool for the lzip decompression code of my lzip patch for 
linux. Xlunzip is similar to lunzip, but it uses the lzip_decompress linux 
module as a backend. Xlunzip tests the module for stream, buffer-to-buffer, 
and mixed decompression modes, including in-place decompression (using the 
same buffer for input and output). You can use xlunzip to verify that the 
module produces correct results when decompressing single member files, 
multimember files, or the concatenation of two or more compressed files. 
Xlunzip can be used with unzcrash to test the robustness of the module to 
the decompression of corrupted data.

The distributed index feature of the lzip format allows xlunzip to 
decompress concatenated files in place. This can't be guaranteed to work 
with formats like gzip or bzip2 because they can't detect whether a high 
compression ratio in the first members of the multimember data is being 
masked by a low compression ratio in the last members.

The xlunzip tarball contains a copy of the lzip_decompress module and can be 
compiled and tested without downloading or applying the patch to the kernel.

The homepage is at http://www.nongnu.org/lzip/xlunzip.html

The sources can be downloaded from 
http://download.savannah.gnu.org/releases/lzip/xlunzip/

The sha256sum is:
4b7ce616305671dcbf6907c2c78cab8d140f0297a48afc9813f5aedbb9f7349a 
xlunzip-0.6.tar.lz

The lzip patch for linux can be found at 
http://download.savannah.gnu.org/releases/lzip/kernel/

Changes in version 0.6:

  * Option '-o, --output' now behaves like '-c, --stdout', but sending the 
output unconditionally to a file instead of to standard output. See the new 
description of '-o' in the man page. This change is not backwards 
compatible. Therefore commands like:
  xlunzip -d -o foo - bar.lz < foo.lz
must now be split into:
  xlunzip -d -o foo - < foo.lz
  xlunzip -d bar.lz
or rewritten as:
  xlunzip -d - bar.lz < foo.lz > foo

  * In-place decompression of concatenated files should now work for any 
combination of files as long as they fit in memory and their total 
decompressed size is smaller than LONG_MAX minus a small extra space.

  * The README file now includes an analysis of the amount of memory 
required for in-place decompression.


Please send bug reports and suggestions to lzip-bug@nongnu.org


Regards,
Antonio Diaz, xlunzip author and maintainer.
Self-determination is a human right. Free Catalan political prisoners.
--
If you care about interoperability and long-term archiving, please help me 
replace xz with lzip. See http://www.nongnu.org/lzip/lzip_benchmark.html#xz1
http://www.nongnu.org/lzip/manual/lzip_manual.html#Quality-assurance and
http://www.nongnu.org/lzip/xz_inadequate.html Thanks.