Re: [xslt] Why is an invalid stylesheet parameter value not an error?

[Bernhard Zwischenbrugger <bz datenkueche com>]

Hi

For me it doesn't look like a bug.
XSLT for normal does not produce error messages.

Instead of:

# xsltproc --param value "ival" test.xslt test.xml

Use

# xsltproc --param value "'ival'" test.xslt test.xml

or

# xsltproc --stirngparam value "ival" test.xslt test.xml

Bernhard

Stefan Behnel wrote:
> Hi,
>
> any comments on this one? It's based on a bug reported for lxml that I would
> like to fix.
>
> https://bugs.launchpad.net/lxml/+bug/208339
>
> This can be reproduced with xsltproc, BTW, using this XML file:
>
> -------------------
> <test/>
> -------------------
>
> and this XSLT file:
>
> -------------------
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>                 version="1.0">
>     <xsl:template match="/">
>         <a><xsl:value-of select="$value"/></a>
>     </xsl:template>
> </xsl:stylesheet>
> -------------------
>
> with this command:
>
>     # xsltproc --param value "ival" test.xslt test.xml
>
> The output is:
>
> -------------------
> <?xml version="1.0"?>
> <a/>
> -------------------
>
> It would really be helpful to get some kind of an error here, instead of
> silently returning an unexpected result.
>
> Thanks,
> Stefan
>
>
> Stefan Behnel wrote:
>   
> > in variables.c, function xsltProcessUserParamInternal(), it says:
> >
> >         if (result == NULL) {
> >             xsltTransformError(ctxt, style, NULL,
> >                 "Evaluating user parameter %s failed\n", name);
> >             ctxt->state = XSLT_STATE_STOPPED;
> >             return(-1);
> >         }
> >
> > So an invalid value for a stylesheet parameter will stop processing but will
> > not signal an error in "state", which is explicitly reset from ERROR to
> > STOPPED here. Is that correct?
> >
> > At a quick glance, I didn't find anything in the spec about this, but I would
> > actually like to see this signaled to the application level (other than a
> > plain string message).
> >
> > Is there an easy way to find out that this case has occurred?
> >     
>
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