Re: [xml] the oasis-xml-catalog PI

[Daniel Veillard <veillard redhat com>]

On Fri, Mar 12, 2010 at 02:57:51AM +0100, Piotr BaÅski wrote:
> Hi,
>
> Is anyone able to use it successfully?
>
> This PI makes it possible for the parser to dynamically locate a catalog
> required for resolving various entities for the given document (so that
> you don't have to put the paths into a static catalog, which can
> sometimes be impractical). It seems to have worked to some extent at
> least, but from what I can see, it may have regressed in xmllint (the
> catalog is freed by xmllint too soon now, apparently -- but in
> xmlcatalog it works all right).
>
> I've posted a bug report on that at
> https://bugzilla.gnome.org/show_bug.cgi?id=611342 -- and I'm wondering
> if my observations are correct or maybe I overlooked something.
>
> A confirmation would be most welcome.

Well the document catalog is used for parsing, and once parsed it's
deallocated as part of the parser context deallocation. Since XIncluding
is done as a second operation the catalog is not available anymore.

In practice as implemented, <?oasis-xml-catalog> is only used for
operations associated to parsing, i.e. load external entities
definitions and DTD access. But operations done on already parsed
documents like XInclude, Relax-NG, XSD validation do not look for
it.

Daniel

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