Re: [xsl] Re: Add element at the end of a variable group of elements

["G. Ken Holman g.ken.holman@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Chris, how would you like it if someone dropped an unexpected change 
in a spec on you at the last minute?! :{)} (you know I'm kidding, right?)

Thankfully, your requirement is readily met by turning my solution 
around only a slight bit. Instead of looking at it as the new data 
preceding identified content, consider it as new data following 
identified content.

I hope this helps.

. . . . . Ken

~/t/ftemp $ cat chris.xml
<?xml version="1.0" encoding="UTF-8"?>
<root>
   <foo/>
</root>
~/t/ftemp $ xslt2 chris.xml chris.xsl
<?xml version="1.0" encoding="UTF-8"?>
<root>
   <foo/>
   <moon>Now with more craters!</moon>
</root>
~/t/ftemp $ xslt2 charles.xml chris.xsl
<?xml version="1.0" encoding="UTF-8"?>
<root>
   <foo/>
   <bar/>
   <mercury/>
   <venus/>
   <moon>Now with more craters!</moon>
   <earth earth-type="round"/>
   <earth earth-type="flat"/>
   <mars/>
</root>
~/t/ftemp $ xslt2 charles2.xml chris.xsl
<?xml version="1.0" encoding="UTF-8"?>
<root>
   <foo/>
   <bar/>
   <mercury/>
   <venus/>
   <moon>Now with more craters!</moon>
   <mars/>
</root>
~/t/ftemp $ cat chris.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
  xmlns:xsd="http://www.w3.org/2001/XMLSchema";
  exclude-result-prefixes="xsd"
  version="2.0">

<xsl:output indent="yes"/>

<xsl:template match="root">
  <xsl:copy>
    <xsl:for-each-group select="*"
                        group-adjacent="self::earth or self::mars">
      <xsl:copy-of select="current-group()"/>
      <xsl:if test="not(xsd:boolean(current-grouping-key()))">
        <moon>Now with more craters!</moon>
      </xsl:if>
    </xsl:for-each-group>
  </xsl:copy>
</xsl:template>

</xsl:stylesheet>
~/t/ftemp $


At 2021-03-03 00:11 +0000, Chris Papademetrious 
christopher.papademetrious@xxxxxxxxxxxx wrote:
> Hi Charles,
>
> I'm interested to see the solutions to this problem. In particular, 
> I'm hoping there is a solution that can handle *no* elements before 
> the insertion point:
>
> <root>
>  <!-- moon should go here -->
>  <mars/>
> </root>
>
> as well as no elements after the insertion point:
>
> <root>
>   <foo/>
>   <!-- moon should go here -->
> </root>
>
> as input. I have a similar situation where I need to insert a new 
> element into a schema-constrained document, and I have to consider 
> the positions of potentially existing (or not) elements.
>
>  - Chris


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