Re: Do xml-like namespaces make sense for Reiser4? (re: metas thread)

["John D. Heintz" <jheintz@pobox.com>]

Enrique,

Enrique Perez-Terron wrote:
> On Tue, 2004-04-13 at 22:31, Valdis.Kletnieks@vt.edu wrote:
> 
>>On Tue, 13 Apr 2004 13:47:12 CDT, "John D. Heintz" said:
>>
>>>foo/nsa:permissions -> foo/nsa.gov/secure-linux/permissions
>>>
>>>This assumes a mapping from "nsa" -> "nsa.gov/security/".
> 
> 
> Implementing a mapping "nsa" -> "nsa.gov/security/" does not remove the
> headache of what to do with a tarball containing a directory named
> "nsa".


A directory or file named "nsa" doesn't conflict with this scheme, look 
more closely at the left hand side: foo/nsa:permissions

foo/nsa/permissions wouldn't receive the same treatment and would 
instead just be a regular file or directory lookup.

Two conditions are necessary to trigger the syntactic manipulation I'm 
suggesting:
1) a ':' must be present in the name being resolved (i.e. nsa:permissions)
2) The prefix before the ':' must be in the mappings (i.e. nsa)

Only if both of those are present does anything special happen.

A tarball containing "secure-linux/nsa/src/*.c" wouldn't break anything, 
and is so likely that no suggestion should risk breaking this case.

However, a tarball containing "secure-linux/nsa:src/*.c" would indeed 
break my scheme. I'm suggesting this is an ignorably small likelyhood. 
Others are free to disagree with this of course.

John Heintz