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My quick reaction is it looks like you're proposing to validate the
entire file to determine what schema to use for the file. Possibly many
times. Have I misunderstood?
Again at a glance, it's hard to see why you would descend into the any
pattern since it accepts anything. All you care about is the namespace
on the start element.
Bob Foster
http://xmlbuddy.com/
David Tolpin wrote:
> Hi,
>
> The idea is inspired by James Clark's approach to Clark's schema
> location approach for nXML,
> http://groups.yahoo.com/group/emacs-nxml-mode/message/259.
>
> I was going to implement it for my needs, but realized that a more
> consistent solution would be more appropriate. The original proposal
> lists a number of features which can be used to determine a document's
> type; however, the exact set of chosen features, while can be
practical for some applications, can become a certain obstacle for others.
>
> In fact, regular expressions can be used. For URIs, that is, for
files' names,
> there are string regular expressions, in any of the many available
syntaxes;
> for XML, that is, for files' contents, the regular expressions
language is
> Relax NG.
> One does not need to specify a complete syntax for either URIs or
contents
> to choose between document types:
> - /.*\.rng/ is a pattern for the name of a file with Relax NG grammar
inside;
>
> -
> namespace rng = "http://relaxng.org/ns/structure/1.0";
> start = element rng:* {any}
> any = (element * {any}|attribute * {text}|text)*
>
> is a Relax NG pattern for the contents of a file with Relax NG
grammar inside.
>
> ARX, http://davidashen.net/rnv.html , is a tool that uses a list of
regular
> (string and XML) patterns to associate files with symbolic names (of
grammars, stylesheets etc.).
> David Tolpin
> http://davidashen.net/
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