Re: [xsl] inserting a child element while honoring the paren

Hi Wendell,

That's mostly what I did in this template:

  <!-- add <j> to <topic>, honoring the following content model:
         topic = a?, b?, c?, j, x?, y?, z?, topic* -->
  <xsl:template match="topic[not(j)]" mode="add-j">
    <xsl:variable name="stuff-before-j"
select="(a|b|c)/(.|preceding-sibling::node())" as="node()*"/>
    <xsl:copy>
      <xsl:sequence select="@*|$stuff-before-j"/>
      <j/>
      <xsl:sequence select="node() except $stuff-before-j"/>
    </xsl:copy>
  </xsl:template>

The part that was tricky for me at first was figuring out how to handle <a>,
<b>, and <c> being present or absent in any combination. But this seems to
work pretty well!


Hi Eliot (again),

I've been thinking that it would be nice to have some helper
functions/templates to make DITA element insertion easier. For example, if I
want to insert an <othermeta> element into a DITA topic:

<topic>
  <title>...</title>
  <prolog>
    <author type="owner">myeong</author>
    <metadata>
      <othermeta content="foo" name="bar"/>
    </metadata>
    <resourceid appid="hile_repeatCopy"/>
  </prolog>
  <body>...</body>
</topic>

I would want to reuse whatever elements might already exist, or create missing
elements as needed while honoring content models:

topic = title, titlealts?, (shortdesc | abstract)?, prolog?, body?,
related-links?, topic* }
prolog = author*, source?, publisher?, copyright*, critdates?, permissions?,
(metadata | change-historylist)*, resourceid*, (data | sort-as | data-about |
foreign | mathml | svg-container | unknown)*
metadata = audience*, category*, keywords*, prodinfo*, othermeta*, (data |
sort-as | data-about | foreign | mathml | svg-container | unknown)*

If I figure out a nice solution to this, I will let you know.


  *   Chris


From: Piez, Wendell A. (Fed) wendell.piez@xxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Tuesday, February 21, 2023 10:36 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] inserting a child element while honoring the parent
element's content model

Chris,

How about (.|preceding-sibling::node), as in
$fromhere/(.|preceding-sibling::node()) ?

Also useful for counting, as in count(self::h1|preceding-sibling::h1).

Cheers, Wendell


From: Chris Papademetrious
christopher.papademetrious@xxxxxxxxxxxx<mailto:christopher.papademetrious@syn
opsys.com>
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx<mailto:xsl-list-service@xxxxxxxxxxxx
rytech.com>>
Sent: Monday, February 20, 2023 3:29 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx<mailto:xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [xsl] inserting a child element while honoring the parent
element's content model

Hi Eliot,

I hadn't known about these operators, thank you!

I couldn't see a clean way to use "<<"  for a preceding-sibling-or-self:: axis
for this specific case, but I will definitely keep these operators in mind for
future DiTA processing tasks.


  *   Chris
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