Re: [xsl] Grouping with siblings

["Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

On 15/02/2025 20:49, rick@xxxxxxxxxxxxxx wrote:
> I have a flat file structure and am trying to add structure to it. Here is
> my XML:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <root>
>      <div type="book" sID="book1">
>          <chapter sID="chapter1" n="1"/>
>          <p sID="p1.1" n="1"/>Paragraph 1 text.
>          <p eID="p1.1"/>
>          <p sID="p1.2" n="2"/>Paragraph 2 text with
> <emphasis>emphasis</emphasis> added.
>          <p eID="p1.2"/>
>          <p sID="p1.3" n="3"/>Paragraph 3 text.
>          <p eID="p1.3"/>
>          <chapter eID="chapter1" n="1"/>
>          <chapter sID="chapter2" n="2"/>
>          <p sID="p2.1" n="1"/>Paragraph 1 text.
>          <p eID="p2.1"/>
>          <p sID="p2.2" n="2"/>Paragraph 2 text with
> <emphasis>emphasis</emphasis> added.
>          <p eID="p2.2"/>
>          <p sID="p2.3" n="3"/>Paragraph 3 text.
>          <p eID="p2.3"/>
>          <p sID="p2.4" n="4"/>Paragraph 4 with <bold>bold</bold> text.
>          <p eID="p2.4"/>
>          <chapter eID="chapter2" n="2"/>
>      </div>
> </root>
>
> My desired output is this:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <book>
>      <chapter number="1">
>          <title>chapter1</title>
>          <p>Paragraph 1 text.</p>
>          <p>Paragraph 2 text with <emphasis>emphasis</emphasis> added.</p>
>          <p>Paragraph 3 text.</p>
>      </chapter>
>      <chapter number="2">
>          <title>chapter2</title>
>          <p>Paragraph 1 text.</p>
>          <p>Paragraph 2 text with <emphasis>emphasis</emphasis> added.</p>
>          <p>Paragraph 3 text.</p>
>          <p>Paragraph 4 with <bold>bold</bold> text.</p>
>      </chapter>
> </book>


Minus indentation I think


B B  <xsl:template match="/root">
B B B B B B B  <xsl:apply-templates select="./div[@sID='book1']"/>
B B B  </xsl:template>

B B B  <xsl:template match="div">
B B B B B B B  <book>
B B B B B B B B B B B  <xsl:for-each-group
select="*|text()[normalize-space()]"
group-starting-with="chapter[@sID]">
B B B B B B B B B B B B B B B  <chapter number="{@n}">
B B B B B B B B B B B B B B B B B B B  <title>{@sID}</title>
B B B B B B B B B B B B B B B B B B B  <xsl:for-each-group
select="current-group() except
." group-starting-with="p[@sID]">
B B B B B B B B B B B B B B B B B B B  <p>
B B B B B B B B B B B B B B B B B B B B B  <xsl:apply-templates
select="current-group()
except ."/>
B B B B B B B B B B B B B B B B B B B  </p>
B B B B B B B B B B B B B B B  </xsl:for-each-group>
B B B B B B B B B B B B B B B  </chapter>
B B B B B B B B B B B  </xsl:for-each-group>
B B B B B B B  </book>
B B B  </xsl:template>

B B B  <xsl:template match="p[@sID, @eID][not(node())] | chapter[@eID]"/>

achieves that.


Obviously if both chapters and paragraphs have start and end marker
elements it might also be worth wrapping group-starting-with around
group-ending-with (or go for XQuery windowing with start/end)