From: Vladimir Prus (ghost_at_[hidden])
Date: 2002-09-16 04:01:06
Jaap Suter wrote:
>>>It would be nice to implement access to a zip or tar file, for example,
>>>as a read-only filesystem. (Or maybe even read-write!)
>>
>
> Yeah, that was my original idea. That is the main advantage of using
> packages. However, compression is beyond the scope of the FileSystem
> library, so imho it should be written on top of it.
I think everybody had ideas of this kind. However, the filesystem
library provides access to one filesystem -- the native one for current
platform. In my opinion (which I expressed briefly before), if you want
fancy things like support to tar.gz, zip, ftp &c. you'd need many
filesystem *classes* (not freestanding function), and some base
filesystem interface.
When I said that before, the comment from Beman was that it's out of the
scope of the filesystem library, and I agree to that. Tar should be part
of some future URL library (e.g. in KDE you can address files in tar
archive using URL).
>>A tar file shouldn't be too difficult, not sure about a gzipped tar file.
>
> I
>
>>have two weeks with not much to do coming up so I might be able to try and
>>get something that can read from a .tar file in the same interface as the
>>B::FS classes.
You'd have to use your own version of filesystem::path and your own
version of filesystem/operators.hpp. I'm not sure if this will be
convenient.
- Volodya