Re: [9fans] Different representations of the same

[Roman V Shaposhnik <rvs@sun.com>]

On Sat, 2009-06-13 at 05:43 +0200, lucio@proxima.alt.za wrote:
> > Sure, but if *each* file can have more than one representation then
> > where's the best place for the ctl thing to be? In each subdirectory?
> > At the top of the hierarchy (accepting the full path names, of course)?
>
> Well, assume you have a canonical representation for a given file, I'd
> have the ctl file in the same directory.  You'd then use a command
> that includes the basename as well as the representation selector to
> create the new entry.  If the representation directory already exists,
> then the file is added to whatever is already there, otherwise the
> directory is created first:
>
> 	; ls /n/synthetic
> 	/n/synthetic/ctl
> 	/n/synthetic/image.canonical
> 	; echo GIF image.canonical > /n/synthetic/ctl
> 	; ls /n/synthetic
> 	/n/synthetic/ctl
> 	/n/synthetic/gif
> 	/n/synthetic/image.canonical
> 	; ls /n/synthetic/gif
> 	/n/synthetic/gif/image.canonical # sic
>
> If you need additional depth to the directory, then I think you ought
> to be looking to upas/fs and how it manipulates its directory for
> further hints.

Hm. This looks more complex to me than essentially turning every file
into a "subdirectory" of sorts full of names for representations.

Thanks,
Roman.