RE: possible to mimic while-like behavior?

It's probably not the only way to do this, but there are
two possibilities: 

1. You simply want to do one thing when bar and another when not bar.
   What you need is two separate templates. For example: 

   <xsl:for-each select="foo[not(bar)]">
   blah
   </xsl:for-each>
   <xsl:for-each select="foo[bar]">
   different blah
   </xsl:for-each>

   This works as long as the bar|not bar condition can 
   be expressed in XPath.

2. The other answer is named templates or modes, such as: 

   <xsl:for-each select="foo">
    <xsl:choose>
     <xsl:when test="bar">blah</xsl:when>
     <xsl:otherwise>
       <xsl:call-template name="blort"/>
     </xsl:otherwise>
    </xsl:choose>
   </xsl:for-each>

   Where the "blort" named template does what you want. 

If what you want is "do blah until you find the first foo where not bar"
there is probably a way to do that also, but I'll leave that to the
more knowledgable and more gifted to fill in.

Sara
> -----Original Message-----
> From: Carole E. Mah [mailto:carole@xxxxxxxxxxxxxxxxxx]
> Sent: Thursday, March 16, 2000 11:59 AM
> To: xsl-list@xxxxxxxxxxxxxxxx
> Subject: possible to mimic while-like behavior?
> 
> 
> 
> I know there are only two conditionals possible in xsl stylesheets,
> <xsl:if> and <xsl:choose> (inside which one has <xsl:when> 
> ... </xsl:when>
> and <xsl:otherwise>...</xsl:otherwise> with nesting allow).
> 
> However, there is no "while" or "until".
> 
> Imagine,
> <xsl:for-each select="foo">
>  <xsl:choose>
>   <xsl:when test="bar">blah</xsl:when>
>   <xsl:otherwise>blort</xsl:otherwise>
>  </xsl:choose>
> </xsl:for-each>
> 
> Now imagine that when the conditions are such that <xsl:otherwise> is
> matched, one wants to break out of the <xsl:for-each>.
> 
> e.g., speaking in a Perl-esque way, I want
>   while ($foo != "bar") {
>     blah
>   }
> 
> Is there any way to simulate, hack, or otherwise achieve this?
> 
> thanks again,
> -carole
> - - - - - - - - - - - - - - - - - - - - - - - - - 
> Carole E. Mah                Carole_Mah@xxxxxxxxx
>          Senior Programmer/Analyst
>   Brown University Scholarly Technology Group
>             phn 401-863-2669
>             fax 401-863-9313
>          http://www.stg.brown.edu/
>  personal: http://www.stg.brown.edu/~carolem/
> 
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> 


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