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fragglet / lhasa

Free Software LHA implementation
http://fragglet.github.io/lhasa/
ISC License
80 stars 15 forks source link

LHARK archive support? #20

Closed roytam1 closed 2 years ago

roytam1 commented 7 years ago

I wonder if LHARK-generated archive be supported by lhasa? ftp://ftp.sac.sk/pub/sac/pack/lhark04d.zip

fragglet commented 7 years ago

Yes, I would very much like this. Unfortunately there is no publicly available source code to this tool. I have made efforts in the past to find and contact Kerwin Medina, the author, but have not had any success. Otherwise it's a matter of reverse engineering the tool to discover the encoding - either by disassembly of the code or through some black box method. Based on some investigations I believe it's a variant on -lh5-.

polluks commented 7 years ago

Indeed, http://www.compression.ru/arctest/self/lhark.htm.

roytam1 commented 7 years ago

LHARK 0.4d unpacked with CUP386 v3.4 LHARK_.zip

roytam1 commented 2 years ago

just found this: https://entropymine.wordpress.com/2020/12/24/notes-on-lhark-compression-format/

fragglet commented 2 years ago

Nice!

fragglet commented 2 years ago

Now fixed - thanks!

fragglet commented 2 years ago

@jsummers - and thank you for your writeup!