Subject: Re: [xsl] Removing namespaces without escaping CDATA??? From: "Mukul Gandhi" <gandhi.mukul@xxxxxxxxx> Date: Sun, 8 Apr 2007 10:11:23 +0530 |
Thanks David (and, Mike) for your insightful thoughts. I have something to ponder about :)
> Everything inside a CDATA section is ignored by the parser. well not everything, the only thing CDATA changes is te interpretation of < and &.
> Can't we incorporate CDATA in XPath data model? i.e. would it be > useful, if CDATA sections could be first class nodes, as text nodes or > element nodes?
eek no! The hole point of CDATa sections (and entity definitions) are that they are an _authoring_ convenience (for human authors) which must have no effect on subsequent processing. It's no point offering a simplified input sysntax if teh resulting file means something different.
So its important that CDATA sections, entity references, the choice of " or ' around attribute values etc are all normalised away by teh XML parser so that any XML applications (such as XSLT) have the same behaviour whether or not they are used. If XSLT (or other XML applications) could "see" the CDATA section then <foo><![CDATA[<]]></foo> would not be equivalent to <foo>&t;</foo> which would be a bad thing.
> Also, specifying cdata-section-elements here, <xsl:output > cdata-section-elements="qnames" /> seem to have a shortcoming, that > it's too global (as I said earlier). Do you agree to this point?
It has to be global or you have to be able to somehow annotate individual elements in the result tree but teh need to annotate teh result tree leads to all sorts of problems if teh result tree is not immediately serialised by XSLT but passed to some other process, which is why disable-output-escaping is such a problem. There is no standard way of passing a result tree to some other process and recording places where doe is used.
David
-- Regards, Mukul Gandhi
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