Re: [xml] Catching error messages in schematron

[Daniel Veillard <veillard redhat com>]

On Thu, Aug 02, 2007 at 01:52:05PM +0200, Stefan Behnel wrote:
> Hi Daniel,
>
> Daniel Veillard wrote:
> > On Thu, Jul 19, 2007 at 08:03:24PM +0200, Stefan Behnel wrote:
> > > currently (as of libxml2 2.6.29), the schematron implementation writes
> > > validation error messages to stderr with a plain fprintf in
> > > xmlSchematronReportOutput (happily annotated with a "TODO").
> > >
> > > However, to make schematron usable in lxml, I need a way to propagate these
> > > errors to the Python level. I would therefore like to see them passed into
> > > __xmlRaiseError().
> >
> >   The schematron code is really not complete, that sure could be fixed
> > but a lot more may be needed. I asked for a definitive set of test for
> > the ISO version and never got an answer, so I got discouraged and dropped
> > working on it at the time. Of course now I have far less time for libxml2
>
> Ah, that's too bad. Can you comment on how complete you consider the current
> Schematron implementation?

  I would like to be able to answer. But 1/ first I don't fully remember
2/ I added support only for XPath1 tests, and the last version I saw
had support for XSLT1/2, I don't know how much is required to be
conformant, and if XSLT is needed, then the schematron support can't be
implemented within libxml2 (since it would depend on libxslt).
Basically I implemented based on a public spec, then it went to ISO
and now I don't have a test suite and it seems the final version 
doesn't look 100% like what I used for the implementation 
   One think missing in the implementation is include support, that's
for sure.

Daniel

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