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Overlapping structures
- To: "'xsl-list at lists dot mulberrytech dot com'" <xsl-list at lists dot mulberrytech dot com>
- Subject: [xsl] Overlapping structures
- From: Stuart Brown <Stuart dot Brown at helicon dot co dot uk>
- Date: Tue, 9 Oct 2001 09:49:00 +0100
- Reply-To: xsl-list at lists dot mulberrytech dot com
I have an XML document with two overlapping structures. To get round this,
for one of the structures I use empty "start" and "end" tags as follows:
<a>I said <z.start/>I will watch my ways</a>
<a><x/>and keep my tongue from sin<z.end/></a>
In my XSL I want to test, from any node <z.start/> if there is the
additional empty element <x/> before the next <z.end/> (i.e. if the
imaginary "z" element "contains" x). I have not found any way I can achieve
this -- any pointers please?
Secondly, if I want to invert the structures, so that the "a" tags become
the imaginary empty tags and the z tags "real" elements, I am currently
cheating to overcome the well-formed constraint as follows (ignoring the x
element above):
<xsl:template match="a">
<a.start/><xsl:apply-templates/><a.end/>
</xsl:template>
<xsl:template match="z.start">
<z>!!DELETE_CLOSE_TAG</z>
</xsl:template>
<xsl:template match="z.end">
<z>!!DELETE_OPEN_TAG</z>
</xsl:template>
thus generating:
<a.start/>I said <z>!!DELETE_CLOSE_TAG</z>I will watch my ways<a.end/>
<a.start/>and keep my tongue from sin<z>!!DELETE_OPEN_TAG</z><a.end/>
and then running a simple Perl script to get rid of the unwanted tags amd
text to result in:
<a.start/>I said <z>I will watch my ways<a.end/>
<a.start/>and keep my tongue from sin</z><a.end/>
However, I would far rather handle this entirely within the XSL stylesheet.
Is there any way I can cheat using CDATA sections to overcome the
well-formed constraint and directly match <z> to <z.start/> and </z> to
<z.end/>?
Thanks,
Stuart
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