dealing with compression

[e.sammer]

greetings all:

i'm working on a project that requires that i work with tar'd, gzip'd, 
and bzip'd files. what i really need to do is have full control over the 
archives in memory (single entry extract, full extract, file info 
extract, etc.) rather than going to disk first.

i was curious if anyone has already written objc wrappers for zlib, tar, 
bzip, etc. (without just using NSTask, if possible)

if this is something that isn't done, but would benefit others and there 
is enough interest, i would be happy (well, kinda happy) to help. also, 
i would be happy to supply the cvs repository and dev box, if required / 
desired.

thanks in advance to all.

--
eric.sammer
eric@lifeless.net