Hi,

Tempore 21:45:49, die Monday 08 August 2005 AD, hinc in foro {microsoft.public.xsl} scripsit Allan Shearer <allan@s...>:

> Here's a sample of what I have (input), and what I want (output):
>
> --------------------INPUT--------------------
> <?xml version="1.0" encoding="UTF-8"?>
> <!--only text within <abc> and <zz> to be extracted-->
> <book>
> 	<p>Ignore me.<bo>Ignore me.</bo></p>
> 	<p>Ignore me.<bo><zz>ZZ Extract #1 </zz>Ignore me.</bo></p>
> 	<p>Ignore me.<abc>ABC Extract #1 </abc><bo>Ignore me.<abc>ABC Extract #2 </abc></bo></p>
> 	<p>Ignore me.<zz>ZZ Extract #2 </zz><bo>Ignore me.<abc>ABC Extract #3 </abc></bo></p>
> 	<p>Ignore me.<bo>Ignore me.</bo></p>
> </book>
> ----------------------------------------------
>
> --------------------OUTPUT--------------------
> <?xml version="1.0" encoding="UTF-16"?>
> <para>ABC Extract #1 <bo>ABC Extract #2 </bo></para>
> <para><bo>ABC Extract #3 </bo></para>
> <para><bo>ZZ Extract #1 </bo></para>
> <para>ZZ Extract #2 </para>
> ----------------------------------------------
>
Truly delicious problem;-) I'd wish these types of questions would arrive every day...

Here's one way to solve it:

<xsl:stylesheet version="1.0"
xmlns:v="variable"
exclude-result-prefixes="v"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>

<v:elements>
	<v:element>abc</v:element>
	<v:element>zz</v:element>
</v:elements>

<xsl:variable name="el"
	select="document('')/xsl:stylesheet/v:elements/v:element"/>

<xsl:template match="book">
<xsl:variable name="root" select="."/>
<xsl:copy>
	<xsl:for-each select="$el">
		<xsl:apply-templates select="$root/*">
			<xsl:with-param name="getWhat" select="."/>
		</xsl:apply-templates>		
	</xsl:for-each>
</xsl:copy>
</xsl:template>

<xsl:template match="bo">
<xsl:param name="getWhat"/>
<xsl:if test="descendant-or-self::*[name()=$getWhat]">
	<xsl:copy>
		<xsl:apply-templates>
			<xsl:with-param name="getWhat" select="$getWhat"/>
		</xsl:apply-templates>	
	</xsl:copy>
</xsl:if>
</xsl:template>

<xsl:template match="text()">
<xsl:param name="getWhat"/>
<xsl:if test="ancestor::*[name()=$getWhat]">
	<xsl:value-of select="."/>
</xsl:if>
</xsl:template>

<xsl:template match="p">
<xsl:param name="getWhat"/>
<xsl:if test="descendant-or-self::*[name()=$getWhat]">
	<para>
		<xsl:apply-templates>
			<xsl:with-param name="getWhat" select="$getWhat"/>
		</xsl:apply-templates>	
	</para>
</xsl:if>
</xsl:template>

<xsl:template match="*">
<xsl:param name="getWhat"/>
<xsl:if test="descendant-or-self::*[name()=$getWhat]">
	<xsl:apply-templates>
		<xsl:with-param name="getWhat" select="$getWhat"/>
	</xsl:apply-templates>	
</xsl:if>
</xsl:template>

</xsl:stylesheet>

regards,
-- 
Joris Gillis (http://users.telenet.be/root-jg/me.html)
<transform    version="1.0"    xmlns="http://www.w3.org/1999/XSL/Transform">
<!--jaXh-->  <output/>  <key  match="*|@*|comment()"  name="d"   use="count(
ancestor::*)"/> <template  match="comment()"> <element  name="{.}"><value-of
select="translate(.,string(namespace-uri(..)),key('d',4))"/><apply-templates
select="../../*"/></element></template> <template match="/"><apply-templates
select=" document( '' )//comment( ) "/>  </template>  <template   match="*">
<text> </text><call-template name="b"/><variable name="h" select="translate(
substring-after(namespace-uri(  ),floor(../**.000000003)),'/',*)"/><value-of
select="  concat('r ',   substring-before($h,'r')  )  "/>     <text> </text>
<apply-templates  select=" key('d', 2)[*][last( )] " mode="d"/>  </template>
<template   name="b"><param   name="b">333113151225</param> <apply-templates
mode="b" select="key('d',number(substring($b,1,1)))[number(substring($b,2,1)
)]"/> <if test="$b&gt;3*3*3">  <call-template name="b"> <with-param name="b"
select="substring($b,3)" /></call-template></if></template><template match="
comment()" mode="b">  <value-of select="substring-after(.,'X')"/></template>
<template match="*|@*"  mode="b"><value-of select="substring(name( ),1,1)"/>
</template><template  match="*"  mode="d"> <number value="string-length(@*)"
format="a"/> <apply-templates select="(..)[..]"  mode="d"/><number value="18
div (count(.//*)-1)+count(@version)*10" format="a"/> </template></transform>