RE: [xsl] Value of the variable

["Michael Kay" <mike@xxxxxxxxxxxx>]

This approach can be summed up as "turn the text delimiters into new markup,
then use positional grouping".

I think that when the problem has come up in the past, David Carlisle also
put forward an alternative approach, which is "turn the markup into text
delimiters, then use regular expression processing".

I suspect the first approach is more general, but there are probably cases
where it's worth being aware of the alternative: for example, it might be
simpler in the case where the only embedded markup consists of empty <br/>
elements.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay 
 

> -----Original Message-----
> From: G. Ken Holman [mailto:gkholman@xxxxxxxxxxxxxxxxxxxx] 
> Sent: 27 November 2009 07:41
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: [xsl] Value of the variable
> 
> At 2009-11-26 18:02 +0530, I wrote:
> >Interestingly, this question was asked about an hour ago on 
> LinkedIn.  
> >The poster of that question gave an explicit input and an explicit 
> >output, so it was very easy to be able to answer.
> 
> For those following this thread on XSL-List, the LinkedIn 
> parallel thread with the same problem was augmented with new 
> requirements not included in the original post.  Apparently, 
> the commas are the overarching determinants in the grouping 
> of the information ... not commas and elements as guessed at 
> for the first time around.
> 
> This changes the problem from a simple iteration into a more 
> elaborate grouping.  A complete solution is below for readers 
> of this archive who may have a similar need of working with 
> portions of text nodes.
> 
> . . . . . . . . Ken
> 
> t:\ftemp>type siddhi.xml
> <book>key1, k<i>e</i>y2, key<b>3</b>, <u>ke</u>y4, 
> <b>k</b>ey<i>5</i></book>
> 
> t:\ftemp>xslt2 siddhi.xml siddhi.xsl
> <?xml version="1.0" encoding="UTF-8"?><book><key>key1</key>,
> <key>k<i>e</i>y2</key>, <key>key<b>3</b></key>, 
> <key><u>ke</u>y4</key>, <key><b>k</b>ey<i>5</i></key></book>
> t:\ftemp>type siddhi.xsl
> <?xml version="1.0" encoding="US-ASCII"?> <xsl:stylesheet 
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>                  version="2.0">
> 
> <xsl:template match="book">
>    <!--preserve the book element and any of its attributes-->
>    <xsl:copy>
>      <xsl:copy-of select="@*"/>
> 
>      <!--determine all of the portions that make up the line-->
>      <xsl:variable name="portions" as="element(portion)*">
>        <xsl:apply-templates mode="make-portions"/>
>      </xsl:variable>
> 
>      <!--those portions ending with a comma make up the new results-->
>      <xsl:for-each-group select="$portions"
>                          group-ending-with="*[@comma-end='true']">
>        <!--surround each group of portions-->
>        <key>
>          <xsl:copy-of select="current-group()/node()"/>
>        </key>
>        <xsl:if test="position()!=last()">, </xsl:if>
>      </xsl:for-each-group>
>    </xsl:copy>
> </xsl:template>
> 
> <!--make numerous portions from a given text node--> 
> <xsl:template match="text()" mode="make-portions">
>    <xsl:for-each select="tokenize(.,',\s+')">
>      <portion comma-end="{position()!=last()}">
>        <xsl:value-of select="."/>
>      </portion>
>    </xsl:for-each>
> </xsl:template>
> 
> <!--make a single portion from a given element node--> 
> <xsl:template match="*" mode="make-portions">
>    <portion><xsl:copy-of select="."/></portion> </xsl:template>
> 
> </xsl:stylesheet>
> 
> t:\ftemp>
> 
> 
> 
> --
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> G. Ken Holman                 mailto:gkholman@xxxxxxxxxxxxxxxxxxxx
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