Re: [xsl] nested XML using xslt

[Martin Honnen <Martin.Honnen@xxxxxx>]

kurps s wrote:

> Here is the input file:
>
>
> <list1>
>   <litem>000</litem>
> <list2>
> <litem>123 </litem>
>
> <list3>
> <litem>ABC</litem>
> <litem>666</litem>
> </list3>
> <!-- now this litem element belongs to list 2-->
> <litem> 999 I belong to list 2</litem>
> <litem> I belong to list 2</litem>
> <list3>
> <litem> I belong to the new list 3</litem>
> </list3>
> <litem> I belong to list 2 again</litem>
> <list3>
> <litem> another list 3</litem>
> <list4>
> <litem>222</litem>
>
> </list4>
> <!-- I belong to lsit 3 now-->
> <litem>333</litem>
> </list3>
> </list2>
> </list1>
>
> Here is my desired output:
>
> <level1>
>   <text>000</text>
>   <level2>
>     <text>
>       <para>123</para>
>     </text>
>     <level3>
>       <text>
>         <para>ABC</para>
>       </text>
>     </level3>
>     <level3>
>       <text>
>         <para>666</para>
>       </text>
>     </level3>
>   </level2>
>   <level2>
>     <text>
>       <para>999 I belong to list 2</para>
>     </text>
>   </level2>
>   <level2>
>     <text>
>       <para>I belong to list 2.</para>
>     </text>
>     <level3>
>       <text>
>         <para>I belong to the new list 3list 3.</para>
>       </text>
>     </level3>
>   </level2>
>   <level2>
>     <text>
>       <para>I belong to list 2 again</para>
>     </text>
>     <level3>
>       <text>
>         <para>another list 3</para>
>       </text>
>       <level4 id="S022496B8">

Where does that id come from?

>         <text>
>           <para>222</para>
>         </text>
>       </level4>
>     </level3>

Isn't one level3 missing here, from
        <!-- I belong to lsit 3 now-->
      <litem>333</litem>

>   </level2>
> </level1>
>
> The idea is that every 'litem' element counts as a 'levelX'.

Here is an attempt to solve that with XSLT 2.0:

<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
  xmlns:xs="http://www.w3.org/2001/XMLSchema";
  xmlns:mf="http://example.com/2009/mf";
  exclude-result-prefixes="xs mf"
  version="2.0">

  <xsl:output method="xml" indent="yes"/>

  <xsl:function name="mf:group" as="element()*">
    <xsl:param name="elements" as="element()*"/>
    <xsl:param name="level" as="xs:integer"/>
    <xsl:for-each-group select="$elements/*" group-starting-with="litem">
      <xsl:element name="level{$level}">
        <text>
          <para>
            <xsl:value-of select="."/>
          </para>
        </text>
        <xsl:sequence select="mf:group(current-group() except ., $level 
+ 1)"/>
      </xsl:element>
    </xsl:for-each-group>
  </xsl:function>

  <xsl:template match="/">
    <xsl:sequence select="mf:group(list1, 1)"/>
  </xsl:template>

</xsl:stylesheet>

Using Saxon 9 it produces the following result:

<level1>
   <text>
      <para>000</para>
   </text>
   <level2>
      <text>
         <para>123 </para>
      </text>
      <level3>
         <text>
            <para>ABC</para>
         </text>
      </level3>
      <level3>
         <text>
            <para>666</para>
         </text>
      </level3>
   </level2>
   <level2>
      <text>
         <para> 999 I belong to list 2</para>
      </text>
   </level2>
   <level2>
      <text>
         <para> I belong to list 2</para>
      </text>
      <level3>
         <text>
            <para> I belong to the new list 3</para>
         </text>
      </level3>
   </level2>
   <level2>
      <text>
         <para> I belong to list 2 again</para>
      </text>
      <level3>
         <text>
            <para> another list 3</para>
         </text>
         <level4>
            <text>
               <para>222</para>
            </text>
         </level4>
      </level3>
      <level3>
         <text>
            <para>333</para>
         </text>
      </level3>
   </level2>
</level1>

It does not generate the id as I don't know where that should come from 
and it does generate a <text><para>...</para></text> for the 'litem' 
element child of 'list1' as I did not try to implement different 
treatment for the first level.

--

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/