Re: [xsl] XSLT for ditaval filtering

["Wendell Piez wapiez@xxxxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hi Chris,

Go with Eliot's solution if you want to do "real DITA". If you want to do
something on the cheap, you could factor our some of the logic

<xsl:variable name="exclusions" select="$ditaval//prop[@att='product' and
@action='exclude']"/>

<xsl:template match="*[@product=$exclusions/@val]"/>

Or for an in-between capability, deploy a key, then match the node with a
template something like

<xsl:template match="*[exists(key('exclusions',@product,$ditaval))]"/>

Like Eliot's function, the key declaration can have fairly complex logic if
it needs to, for binding elements to inclusion or exclusion rules.

Cheers, Wendell

On Tue, Feb 1, 2022 at 3:36 PM Eliot Kimber eliot.kimber@xxxxxxxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> I would create an XSLT function that does the ditaval evaluation so that
> you can then use that bindly from match expressions, i.e.:
>
>
>
> <xsl:function name=blocal:isIncludedb as=bxs:Booleanb>
>   <xsl:param name=bcontextb as=belement()b/>
>
>   <xsl:param name=bditavalb as=bdocument-node()b/>
>
>
>
> <xsl:variable name=bresultb as=bxs:booleanb>
>
>   <!bhard work goes here -->
>
> </xsl:variable>
>
> <xsl:sequence select=b$resultb/>
>
> </xsl:function>
>
>
>
> And then in your template you can do:
>
>
>
>     <xsl:template match="*[not(local:isIncluded(., $ditaval))]"/>
>
>
>
> Or maybe the better name is isExcluded() so your check can be
> local:isExcluded() but you get the idea.
>
>
>
> From the DITAVAL file you can get the names of the attributes (or @props
> values) to check and then have generic code that evaluates them.
>
>
>
> When Ibve done this in the past I seem to recall normalizing all the
> @props specializations to the @props syntax and then evaluating that, but
> with XSLT 3 you could use XPath maps, which would be easier, i.e.:
>
>
>
> <xsl:variable name=bpropsValuesb as=bmap(*)b>
>
>   <xsl:map-merge>
>
>     <xsl:apply-templates select=b./@*b mode=bget-props-valuesb/>
>
>   <xsl:map-merge>
>
> </xsl:variable>
>
>
>
> Where the keys are condition names and the values are a sequence of
> Booleans. You could then use map-left() to get the effective Boolean value
> for each condition and compare it to the include/exclude value.
>
>
>
> Or maybe Ibm making it too hard.
>
>
>
> Cheers,
>
>
>
> E.
>
> _____________________________________________
>
> *Eliot Kimber*
>
> Sr Staff Content Engineer
>
> O: 512 554 9368
>
> M: 512 554 9368
>
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>
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>
>
> *From: *rick@xxxxxxxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
> *Date: *Tuesday, February 1, 2022 at 12:25 PM
> *To: *xsl-list@xxxxxxxxxxxxxxxxxxxxxx <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
> *Subject: *Re: [xsl] XSLT for ditaval filtering
>
> *[External Email]*
>
>
>
> Here is my first attempt, which is doing the filtering. With this
> algorithm, I would need multiple rules for testing other possible ditaval
> attributes.
>
>
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>
>     xmlns:xs="http://www.w3.org/2001/XMLSchema";
>
>     xmlns:math="http://www.w3.org/2005/xpath-functions/math";
>
>     exclude-result-prefixes="xs math"
>
>     version="3.0" expand-text="yes">
>
>
>
>     <xsl:output indent="yes"/>
>
>
>
>     <xsl:param name="ditaval-file"
> select="'file:///C:/DATA-10/content/Hide-Prod2.ditaval'"/>
>
>
>
>     <xsl:variable name="ditaval" as="document-node()*">
>
>         <xsl:if test="doc-available($ditaval-file)=true()">
>
>             <xsl:sequence select="doc($ditaval-file)"/>
>
>         </xsl:if>
>
>     </xsl:variable>
>
>
>
>     <xsl:template match="/map">
>
>         <map>
>
>             <xsl:apply-templates select="@*"/>
>
>             <xsl:apply-templates/>
>
>         </map>
>
>     </xsl:template>
>
>
>
>     <xsl:template match="*[@product!=''][$ditaval//prop[@att='product' and
> @val=current()/@product and @action='exclude']]"/>
>
>     <xsl:mode on-no-match="shallow-copy"/>
>
>
>
> </xsl:stylesheet>
>
>
>
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