Re: Searching for an assembly guru -- DART disk utility

Well I hooked up the DART implementation I wrote (but didn’t complete) for XADMaster 4.5 years ago and it seems to decompress LZH DART images fine, including the "problem" ones. I’ve attached a diff against current XADMaster (repo linked below)

Note that RLE decompression is not correctly hooked up in this implementation.

David

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> On Jan 20, 2018, at 4:14 PM, David Ryskalczyk <d235j.1_at_email.domain.hidden> wrote:
> 
> I was able to disassemble DartLib.o, with ksherlock’s mpw (https://github.com/ksherlock/mpw) and the DumpObj tool that comes with MPW.
> I’m not sure if there is a policy on posting such disassemblies to this list. If this is OK, I can post it, or alternatively I can send it to someone who asks.
> That said, it is not particularly difficult to do this yourself.
> 
> Now it comes down to determining the differences between the DART LZH implementation and Dynamic LZH as implemented in http://bitbucket.org/kosovan/theunarchiver/src/9648ef3e389b77ece47f55f031e9468e4dae03b4/XADMaster/XADLZHDynamicHandle.m , which seems to work in most but not all cases.
> 
> David
> 


>> On Jan 20, 2018, at 9:21 AM, Natalia Portillo <claunia_at_email.domain.hidden> wrote:


>> 

>> hdid and hdiutil are just frontends to the PrivateFramework

>> DiskImages.framework. There's the algorithm

>> 

>> On 20/01/18 10:15, gilles wrote:

>>> After some code reading the disc image does not seem to be present in open source code from macos/darwin. The code should be in hdid (10.0 -> 10.2) or hdiutil (10.3+) . 
>>> 


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application/octet-stream attachment: XADDART_20180120.patch