Bug 447421

Summary: Add support for lzip compression
Product: [Frameworks and Libraries] frameworks-karchive Reporter: Heinz Wiesinger <pprkut>
Component: generalAssignee: David Faure <faure>
Status: RESOLVED FIXED    
Severity: wishlist CC: kdelibs-bugs-null, nate
Priority: NOR    
Version First Reported In: 5.89.0   
Target Milestone: ---   
Platform: Slackware   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=447423
Latest Commit: https://invent.kde.org/frameworks/karchive/-/commit/78cddbf15c39cd81dab8eceadbd5619e37ff016d Version Fixed/Implemented In:
Sentry Crash Report:

Description Heinz Wiesinger 2021-12-23 12:19:17 UTC 
SUMMARY

It would be nice if karchive had support for lzip compression. An example where this is more and more used is source file distributions in the form of "tar.lz" archives.

A library that can be used for this is lzlib: http://www.nongnu.org/lzip/lzlib.html
Comment 1 Albert Astals Cid 2025-05-13 22:13:43 UTC 
Git commit 78cddbf15c39cd81dab8eceadbd5619e37ff016d by Albert Astals Cid, on behalf of Azhar Momin.
Committed on 13/05/2025 at 22:13.
Pushed by aacid into branch 'master'.

Add LZIP compression support to KArchive

- Implement KLzFilter for LZIP compression and decompression.
- Update KCompressionDevice to recognize lz files.
- Modify KTar to handle LZIP compressed tar files.
- Update autotests to include LZIP support.

LZIP uses a simple format consisting of a header, an LZMA stream, and a trailer for each member:

```
  +--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  | ID string | VN | DS | LZMA stream | CRC32 |   Data size   |  Member size  |
  +--+--+--+--+----+----+=============+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
```

This implementation parses and writes single-member archives. It can also handle multi-member archives when built with liblzma ≥ 5.4.0.

Reference: https://www.nongnu.org/lzip/manual/lzip_manual.html

M  +24   -17   autotests/CMakeLists.txt
M  +2    -0    autotests/karchivetest.cpp
M  +11   -0    autotests/kcompressiondevicetest.cpp
M  +1    -0    autotests/kcompressiondevicetest.h
M  +17   -0    autotests/kfiltertest.cpp
M  +1    -0    autotests/kfiltertest.h
M  +1    -1    src/CMakeLists.txt
M  +17   -0    src/kcompressiondevice.cpp
M  +2    -0    src/kcompressiondevice.h
A  +392  -0    src/klzfilter.cpp     [License: LGPL(v2.0+)]
A  +48   -0    src/klzfilter.h     [License: LGPL(v2.0+)]
M  +5    -0    src/ktar.cpp
M  +2    -1    src/ktar.h

https://invent.kde.org/frameworks/karchive/-/commit/78cddbf15c39cd81dab8eceadbd5619e37ff016d