Re: DOS 3.3 File Compression

[Andy McFadden <fadden@fadden.com>]

schmidtd <schmidtd@my-deja.com> wrote:
> There is the .shk/.bxy/.sdk crowd with physical hardware connected in
> some way to the real world.  The .shk/.bxy/.bsc/.sdk are natural means
> of working natively with individual files in ProDOS and fairly large
> volumes (i.e. hard drives).  Tools like ShrinkIt, etc. make it easy to
> decompress things in situ.  Similarly, CiderPress (Windows only) makes
> it easy to decompress those packages on modern computers as well; but
> then you have the need to transport an individual file or files down
> to the Apple in order to make it useful.

FWIW, you can extract files to Windows with CiderPress in "preserve"
mode and it'll encode the file/aux type in the filename.  When you add
the files back into a disk image it'll restore the type info.  You should
be able to extract a hierarchy of files from a ProDOS disk or ShrinkIt
archive to individual Windows files and then add them back to a new disk
image without any adverse effects.

This is not true for DOS 3.3, which can do weird things (like have 'B' files
with more data than the length word indicates).

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