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Subject: Re: [xsl] inserting a child element while honoring the parent element's content model From: "Michael Kay michaelkay90@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Wed, 22 Feb 2023 20:46:49 -0000 |
> On 22 Feb 2023, at 20:38, Chris Papademetrious christopher.papademetrious@xxxxxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hi Vincent, Wendell, > > I am interested in understanding how regular expressions are used to check/enforce content models. Could you help me understand this, perhaps with a simple example? > > Chris > Very straightforward in principle, if the content model is (head, para*) then you just match the actual string of element names, say "head#para#para#" against the regular expression "head#(para#)*" (where # is any delimiter character that can't appear in a name). You have to refine that to deal with namespaces, but it's not too hard. I did actually consider implementing the real XSD processor this way, but I couldn't see how to get satisfactory diagnostics. Michael Kay Saxonica
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