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Re: (X)HTML to EARL via XSLT

From: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
Date: Wed, 03 May 2006 18:17:37 +0200
Message-Id: <6.0.0.22.2.20060503171603.02c0ff40@mailserv.esat.kuleuven.be>
To: public-wai-ert@w3.org

Hi Vicente,

At 17:00 3/05/2006, Vicente Luque Centeno wrote:
<quote>
Yes, it is possible to rewrite my XSLT templates into Schematron rules (and 
some other constraint languages as well), but I am not volunteeing either 
;-). I think that making a hierarchy of XSLT files would be easier. At 
least XSLT has a wider tool support than Schematron and is a W3C 
recommendation by itself. Anyway, can you give us some reference that 
explains how Schematron rules can generate EARL reports by default?
</quote>

I thought that Schematron support is a non-issue because all you need is an 
XSLT that turns the Schematron file into the actual validator/XSLT file 
that generates the output you want.
The idea is that you
1) first create your Web Accessibility Schematron (wa.sch),
2) create schematron-earl.xslt,
3) "compile" your schematron, e.g. with C:\saxon wa.sch 
schematron-earl.xslt > wa-earl.xslt
4) then "validate" the XHTML page, e.g. with C:\saxon bad.xhtml 
wa-earl.xslt > bad.xhtml.earl.

The difficult part is writing schematron-earl.xslt. As far as I know there 
are XSLTs for HTML (schematron-report.xsl), XML (schematron-xml.xsl) and 
plain text (schematron-basic.xsl).

There is already a small Schematron example for checking against WCAG 1.0 
referenced at the bottom of 
http://xml.ascc.net/schematron/1.5/message1-5/schematron-message.html.

Regards,

Christophe

---previous message---
On Wed, 3 May 2006, Christophe Strobbe wrote:


>>Hi Vicente,
>>
>>At 21:25 30/04/2006, Vicente Luque Centeno wrote:
>><quote>
>>I have recently developed a Web Accessibility evaluator in a single XSLT
>>file (namely WAEX). You can find it at http://www.it.uc3m.es/vlc/waex.html
>>(...)
>>I would be happy that someone could collaborate by modifying this (rather 
>>simple but complete) XSLT file to generate EARL reports as well. The XSLT 
>>file is at http://www.it.uc3m.es/vlc/wcag.xsl
>></quote>
>>
>>Since you want different output formats but you probably don't want to 
>>maintain different versions of the XSLT file, I wonder if it wouldn't be 
>>possible to make this just a little bit more "abstract" by turning the 
>>XSLT into a Schematron [1] schema, so that you have various output 
>>formats by default. If someone would write a schematron-earl.xslt, this 
>>xslt would be useful beyond accessibility checking. (I'm not 
>>volunteering, though.)
>>(...)
>
>--
>Christophe Strobbe
>K.U.Leuven - Departement of Electrical Engineering - Research Group on 
>Document Architectures
>Kasteelpark Arenberg 10 - 3001 Leuven-Heverlee - BELGIUM
>tel: +32 16 32 85 51
>http://www.docarch.be/ 


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Received on Wednesday, 3 May 2006 16:17:50 GMT

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