rowan@s... wrote:
> I've got an input file like this:
> <items>
>   <item>
>     <a>abc</a>
>     <b>def</b>
>     <item>
>       <a>ghi</a>
>       <b>jkl</b>
>     </item>
>     <item>
>       <a>mno</a>
>       <b>pqr</b>
>       <item>
>         <a>stu</a>
>         <b>vwx</b>
>       </item>
>     </item>
>   </item
> </items
> 
> The items can be nested to any depth.
> 
> I want to convert this to:
> 
> <items>
>   <item>
>     <level>0</level>
>     <a>abc</a>
>     <b>def</b>
>   </item
>   <item>
>     <level>1</level>
>     <a>ghi</a>
>     <b>jkl</b>
>   </item>
>   <item>
>     <level>1</level>
>     <a>mno</a>
>     <b>pqr</b>
>   </item
>   <item>
>     <level>2</level>
>     <a>stu</a>
>     <b>vwx</b>
>   </item>
> </items
> 
> In other words I want to remove the hierarchy of items and replace it with
> a 'level' element.
> 
> What's the best way of doing this?

Here is an XSLT 1.0 way:

<xsl:stylesheet
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   version="1.0">

   <xsl:output indent="yes"/>

   <xsl:template match="items">
     <xsl:copy>
       <xsl:apply-templates select="descendant::item"/>
     </xsl:copy>
   </xsl:template>

   <xsl:template match="item">
     <xsl:copy>
       <level><xsl:value-of select="count(ancestor::item)"/></level>
       <xsl:copy-of select="*[not(self::item)]"/>
     </xsl:copy>
   </xsl:template>

</xsl:stylesheet>


-- 

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

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