Re: [xsl] Grouping to Separate Out Block Level Elements from Mixed Content

["Don Smith dsmith_lockesmith@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hi Gerrit,
Thanks for the pointer. I will review those.
Don

Sent from Yahoo Mail on Android

  On Sat, Feb 5, 2022 at 9:30 AM, Imsieke, Gerrit, le-tex
gerrit.imsieke@xxxxxxxxx<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:   Hi
Don,

I haven't looked at your grouping approach in detail. The spec [1]
contains a similar example that employs group-adjacent instead of
group-starting-with/group-ending-with. Maybe you can adapt this approach
to your situation?

Gerrit

[1] https://www.w3.org/TR/xslt-30/#d7e42443

On 05.02.2022 16:20, Don Smith dsmith_lockesmith@xxxxxxxxx wrote:
> The sample XML file has two paragraphs ("p" element) that contain mixed
> content. However, some of the child elements of "p" are block level
> elements. I need to separate these block level elements out from the
> mixed content and place each component of the paragraph content in their
> own consecutive blocks, as appropriate. So, in the first example input
> paragraph (see attached for complete input file):
> <p>In Boolean algebra, the algebraic normal form <i>(ANF)</i> is a way
> of writing logical formulas in
>B  B  B  one of three subforms: <list list-type="simple">
>B  B  B  B <list-item>
>B  B  B  B  <p>The entire formula is purely true or false</p>
>B  B  B  B </list-item>
>B  B  B  B <list-item>
>B  B  B  B  <p>One or more variables are ANDed together into a term</p>
>B  B  B  B </list-item>
>B  B  B  B <list-item>
>B  B  B  B  <p>The previous subform with a purely true term</p>
>B  B  B  B </list-item>
>B  B  B  </list>Formulas written in ANF are also known as Zhegalkin
> polynomials and Positive Polarity (or
>B  B  B  Parity) ReedbMuller expressions (PPRM).</p>
>
> Should on output be:
>
> <p>In Boolean algebra, the algebraic normal form <i>(ANF)</i> is a way
> of writing logical formulas in
>B  B  B  one of three subforms:<p>
>B  B <list list-type="simple">
>B  B  B  B <list-item>
>B  B  B  B  <p>The entire formula is purely true or false</p>
>B  B  B  B </list-item>
>B  B  B  B <list-item>
>B  B  B  B  <p>One or more variables are ANDed together into a term</p>
>B  B  B  B </list-item>
>B  B  B  B <list-item>
>B  B  B  B  <p>The previous subform with a purely true term</p>
>B  B  B  B </list-item>
>B  B  B  </list>
> <p>Formulas written in ANF are also known as Zhegalkin polynomials and
> Positive Polarity (or
>B  B  B  Parity) ReedbMuller expressions (PPRM).</p>
>
> You'll note in the second example input paragraph a more complex
> scenario where there are two nested block elements. I think a recursive
> solution is needed for that but so far I've had no success in achieving it.
>
> The XSLT I've written so far (attached) accomplishes the first needed
> part by separating the block elements from the mixed content that comes
> *before* the block using for-each-group and group-starting-with. But
> attempts to achieve the same result on mixed content that *follows* the
> block using for-each-group and group-ending-with have not succeeded. I
> think it's close but am just missing a crucial detail. And, as noted
> already, the solution does need to account for the possibility of nested
> blocks.
>
> Embedded XSLT:
>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>B  B  B  xmlns:xs="http://www.w3.org/2001/XMLSchema";
>B  B  B  xmlns:xlink="http://www.w3.org/1999/xlink";
>B  B  B  xmlns:mml="http://www.w3.org/1998/Math/MathML";
>B  B  B  exclude-result-prefixes="xs"
>B  B  B  version="2.0">
>B  B  B  <xsl:template match="p">
>B  B  B  B  B  <xsl:for-each-group select="node()" group-starting-with="list
|
> disp-formula | mml:math">
>B  B  B  B  B  B  B  <xsl:variable name="group1" as="element()">
>B  B  B  B  B  B  B  B  B  <GROUP1>
>B  B  B  B  B  B  B  B  B  B  B  <xsl:apply-templates
> select="current-group()"></xsl:apply-templates>
>B  B  B  B  B  B  B  B  B  </GROUP1>
>B  B  B  B  B  B  B  </xsl:variable>
>B  B  B  B  B  B  B  <xsl:choose>
>B  B  B  B  B  B  B  B  B  <xsl:when test="$group1/list |
>B  B  B  B  B  B  B  B  B  B  B  $group1/disp-formula |
>B  B  B  B  B  B  B  B  B  B  B  $group1/mml:math">
>B  B  B  B  B  B  B  B  B  B  B  <xsl:call-template name="end_group">
>B  B  B  B  B  B  B  B  B  B  B  B  B  <xsl:with-param name="input"
select="$group1"/>
>B  B  B  B  B  B  B  B  B  B  B  </xsl:call-template>
>B  B  B  B  B  B  B  B  B  </xsl:when>
>B  B  B  B  B  B  B  B  B  <xsl:otherwise>
>B  B  B  B  B  B  B  B  B  B  B  <xsl:copy-of select="$group1"/>
>B  B  B  B  B  B  B  B  B  </xsl:otherwise>
>B  B  B  B  B  B  B  </xsl:choose>
>B  B  B  B  B  </xsl:for-each-group>
>B  B  B  </xsl:template>
>B  B  B  <xsl:template name="end_group">
>B  B  B  B  B  <xsl:param name="input" >default</xsl:param>
>B  B  B  B  B  <xsl:variable name="group2" as="element()" >
>B  B  B  B  B  B  B  <xsl:for-each-group select="$input"
group-ending-with="list
> | disp-formula | mml:math">
>B  B  B  B  B  B  B  B  B  <PGROUP2>
>B  B  B  B  B  B  B  B  B  B  B  <xsl:apply-templates
> select="current-group()"></xsl:apply-templates>
>B  B  B  B  B  B  B  B  B  </PGROUP2>
>B  B  B  B  B  B  B  </xsl:for-each-group>
>B  B  B  B  B  </xsl:variable>
>B  B  B  B  B  <xsl:copy-of select="$group2"/>
>B  B  B  </xsl:template>
>
>B  B  B  <xsl:template match="/">
>B  B  B  B  B  <output>
>B  B  B  B  B  B  B  <xsl:apply-templates/>
>B  B  B  B  B  </output>
>B  B  B  </xsl:template>
>B  B  B  <xsl:template match="*">
>B  B  B  B  B  <xsl:variable name="name" as="xs:string" select="name()"/>
>B  B  B  B  B  <xsl:element name="{$name}">
>B  B  B  B  B  B  B  <xsl:apply-templates/>
>B  B  B  B  B  </xsl:element>
>B  B  B  </xsl:template>
> </xsl:stylesheet>
>
> Thanks in advance,
>
> Don