[Portfolio] parsing template ?

[Noah Botimer]

Erica just asked me to provide clarification to this. Although I  
suggest looking at my other response for what I would do in this  
specific case, string parsing comes up often, and isn't obvious to  
most folks in XSLT.

You essentially end up programming like you're in Lisp (CAR and CDR,  
anyone?). That is, the template Erica mentions would be recursive.  
Since you're looking for stuff after the last slash, one way is to  
check if there is a slash and, if so, run the same template on the  
stuff after it, otherwise just returning the input. You could do it  
like this:

<xsl:template name="after-last-slash">
     <xsl:param name="someText"/>
     <xsl:choose>
         <xsl:when test="contains($someText, '/')"><xsl:call-template  
name="last-slash"><xsl:with-param name="someText" select="substring- 
after($someText, '/')"/></xsl:call-template></xsl:when>
         <xsl:otherwise><xsl:value-of select="$someText"/></ 
xsl:otherwise>
     </xsl:choose>
</xsl:template>

You then just call the after-last-slash template with the parameter  
someText being whatever you need to parse. You'll either end up  
outputting it immediately or capturing it in an xsl:variable for  
output somewhere else.

Cheers,
-Noah

On Jul 27, 2009, at 4:13 PM, Ackerman, Erica wrote:

> Jon, I think you want to create a template that calls substring- 
> before and substring-after to break the string up, saving the  
> substring-before and the substring-after parts in variables. The  
> template would then call itself again until there was no substring- 
> after part.
>
> Erica
>
> From: portfolio-bounces at collab.sakaiproject.org [mailto:portfolio- 
> bounces at collab.sakaiproject.org] On Behalf Of Jon Wheat
> Sent: Monday, July 27, 2009 4:01 PM
> To: portfolio at collab.sakaiproject.org
> Subject: [Portfolio] parsing template ?
>
>
> I have a portfolio form that collects multiple attachments.
>
> The resulting XML looks like this -
>
>      <structuredData>
>         <document>
>           <docReflection> snipped </docReflection>
>           <fileSelect>/attachment/2f0ae395-a3dd-493b- 
> b9da-141395ad34ff/Matrices/8b842f05-a344-42a0-91c3-51f138d51f62/ 
> lang_c1.pdf</fileSelect>
>           <fileSelect>/attachment/2f0ae395-a3dd-493b- 
> b9da-141395ad34ff/Matrices/426b99d2-d514-4a08-ba9a-0d00ffd8e81d/ 
> lang_c2.pdf</fileSelect>
>           <fileSelect>/attachment/2f0ae395-a3dd-493b- 
> b9da-141395ad34ff/Matrices/c0afc9de-f294-49ec-bcfc-1e47a7d7908a/ 
> lang_c3.pdf</fileSelect>
>         </document>
>       </structuredData>
>
> I'm now attempting to grab just the filenames for these files and  
> am having difficulty both looping though the fileSelect(s) and  
> parsing the urls so I can create simple a lang_c1.pdf link.
>
> Does anyone have any template code that does this ?
>
> - Jon
>
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