Name        : xar                          Relocations: (not relocatable)
Version     : 1.5.3                             Vendor: ALT Linux Team
Release     : alt1                          Build Date: Sun Dec 18 03:21:19 2011
Install date: (not installed)               Build Host: ldv-sisyphus.hasher.altlinux.org
Group       : Archiving/Compression         Source RPM: (none)
Size        : 519843                           License: BSD
Packager    : Dmitry V. Levin (for packages) <ldv@altlinux.org>
URL         : http://code.google.com/p/xar/
Summary     : The XAR project aims to provide an easily extensible archive format
Description :
The XAR project aims to provide an easily extensible archive format.
Important design decisions include an easily extensible XML table of
contents for random access to archived files, storing the toc at the
beginning of the archive to allow for efficient handling of streamed
archives, the ability to handle files of arbitrarily large sizes,
the ability to choose independent encodings for individual files in
the archive, the ability to store checksums for individual files in
both compressed and uncompressed form, and the ability to query the
table of content's rich meta-data.

Please note that the code quality of this project is quite poor.
Do not expect that error conditions would be handled properly.