Re: ZIP archives

FROM : Michael Hall
DATE : Wed Jul 26 00:44:50 2006

On Jul 25, 2006, at 5:24 PM, Matt Mashyna wrote:

>  You need to
> make a function to get the file time and attributes, and a function to
> calculate the MacBinary CRC.
>


I thought someone a while back had indicated a semi-standard wrapper 
for zlib zip access in Cocoa. I might be misremembering.
Nitpicking. The CRC16 or more probably CRC32 are included in the zip 
spec's I think and have nothing to do with MacBinary. That might be 
added if you were supporting Classical era resource forks. For 
example a 3rd party shareware package called ZipIt used to encode the 
file signature meta information and resource fork data using 
MacBinary in the user field of the zip file header.
I did a classical zlib port for java that supported the ZipIt type 
files.


Mike Hall        mikehall at spacestar dot net
http://www.spacestar.net/users/mikehall
http://sourceforge.net/projects/macnative