Re: [xsl] Identifying unique attribute values in nested sibling elements

["Mark" <mark@xxxxxxxxxxxx>]

Hi Ken,
Despite my confused presentation of the problem last week, you supplied me 
with two functions that obtain the unique attributes from  <Value> element 
within a set of <Stamp> elements. Works beautifully, but I did make some 
modifications to the second function. Please let me know if my modifications 
are consistent with the idiom you have been talking about or if I have 
slipped back into C++. Any improvements would be greatly appreciated if and 
when you have the time and desire. The h-value and l-value were not 
presented to you as part of the original use case.

They do exactly what I wanted.
Thanks,
Mark

the XML with the  output:
<Value kc-value="1">                        Text: 1kc     File: 1-0.htm
<Value kc-value="1" h-value="50"> Text 1.50kc File: 1-50.htm
<Value kc-value="0" h-value="50"> Text: 50h  File: 0-50.htm
<Value kc-value="0" l-value="A"     Text: A  File:a.htm

Only the second function, cps:report, has been modified:

<!--compose a string of attribute names and their values;
   avoid the possibility of co-incidental string values;-->
 <xsl:function name="cps:attrs">
   <xsl:param name="this"/>
   <xsl:value-of>
     <xsl:for-each select="$this/@*">
       <xsl:sort select="name(.)"/>
       <xsl:value-of select="name(.),'&#xfdd0;',.,'&#xfdd0;'"/>
     </xsl:for-each>
   </xsl:value-of>
 </xsl:function>

 <!--common reporting-->
 <xsl:function name="cps:report">
   <xsl:param name="Stamp"/>
   <xsl:for-each select="$Stamp">
     <!-- l-value -->
     <xsl:choose>
       <xsl:when test="Value/@l-value">
         <xsl:for-each select="Value/@l-value">
           <a class="button" href="../aval/{lower-case(.)}.htm">
             <xsl:value-of select="."/>
           </a>
         </xsl:for-each>
       </xsl:when>
       <!-- kc-value + h-value -->
       <xsl:when test="Value/@h-value">
         <xsl:variable name="h">
           <xsl:for-each select="Value/@h-value">
             <xsl:value-of select="."/>
           </xsl:for-each>
         </xsl:variable>
         <xsl:for-each select="Value/@kc-value">
           <xsl:choose>
             <xsl:when test="not(. eq '0')">
               <a class="button" href="../aval/{concat(., '-', $h)}.htm">
                 <xsl:value-of select="concat(., '.', $h)"/>
                 <xsl:text>KD
</xsl:text>
               </a>
             </xsl:when>
             <xsl:otherwise>
               <a class="button" href="../aval/{concat(., '-', $h)}.htm">
                 <xsl:value-of select="$h"/>
                 <xsl:text>h</xsl:text>
               </a>
             </xsl:otherwise>
           </xsl:choose>
         </xsl:for-each>
       </xsl:when>

       <xsl:otherwise>
         <!-- Only when there is no h-value  -->
         <xsl:for-each select="Value/@kc-value">
           <a class="button" href="../aval/{concat(., '-0')}.htm">
             <xsl:value-of select="."/>KD
<xsl:text/>
           </a>
         </xsl:for-each>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:for-each>
 </xsl:function>