RE: [xsl] Using XSLT to add markup to a document

["McNally, David" <David.McNally@xxxxxxxxxx>]

Coming late to this thread, and I think everything has pretty much been
said, but had a query.  

I notice that most XSLT 1.0 solutions use recursive templates and wondered
if there is any benefit in a solution that re-applies templates to text
nodes many times, rather than explicitly calling a recursive template.  For
moderately big files it seems to perform quite well, though I haven't tested
it too much, so there may be hidden problems.  I guess this approach is
essentially the same as recursion, but you don't have to figure out which
matched string comes first (though you do need node-set). 


Mark_up_text.xml:

<node>
	<para>
This is a sample document that deals with markup of <emph>text</emph>.
</para>
	<para> When one applies <emph>markup</emph> to a large document, one
is faced with 
a <def>time-consuming</def> effort.
</para>
	<para att="document markup">lkj markup kjlkj document lkj document
;lkj markup lkj;slakfj markup document</para>
</node>


Mark_up_text.xsl:


<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:msxml="urn:schemas-microsoft-com:xslt">

<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>

<xsl:template match="text()" priority="2"><!-- need priority to overcome the
node match below -->
	<xsl:call-template name="markup">
		<xsl:with-param name="text" select="."/>
	</xsl:call-template>
</xsl:template>
	
<xsl:template match="node()|@*">
	<xsl:copy>
		<xsl:apply-templates select="@*"/>
		<xsl:apply-templates/>
	</xsl:copy>
</xsl:template>	

<xsl:template name="markup">
	<xsl:param name="text"/>
	<xsl:choose>
		<xsl:when test="contains($text, 'document')">
			<xsl:apply-templates
select="msxml:node-set(substring-before($text,'document'))"/>
			<xsl:element name="special">document</xsl:element>
			<xsl:apply-templates
select="msxml:node-set(substring-after($text,'document'))"/>
		</xsl:when>
		<xsl:when test="contains($text, 'markup')">
			<xsl:apply-templates
select="msxml:node-set(substring-before($text,'markup'))"/>
			<xsl:element name="special">markup</xsl:element>
			<xsl:apply-templates
select="msxml:node-set(substring-after($text,'markup'))"/>
		</xsl:when>
		<xsl:otherwise><xsl:value-of select="."/></xsl:otherwise>
	</xsl:choose>
</xsl:template>



And my output is:


<node>
<para>
This is a sample <special>document</special> that deals with
<special>markup</special> of <emph>text</emph>. </para>
<para> When one applies <emph><special>markup</special></emph> to a large
<special>document</special>, one is faced with 
a <def>time-consuming</def> effort.
</para>
<para att="document markup">lkj <special>markup</special> kjlkj
<special>document</special> lkj <special>document</special> ;lkj
<special>markup</special> lkj;slakfj <special>markup</special>
<special>document</special></para>
</node>


Thanks,
David.
--
David McNally            Moody's Investors Service
Software Engineer        99 Church St, NY NY 10007 
David.McNally@xxxxxxxxxx            (212) 553-7475 



> -----Original Message-----
> From: Jim Melton [mailto:jim.melton@xxxxxxx] 
> Sent: Thursday, July 03, 2003 4:28 PM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Cc: jim.melton@xxxxxxx
> Subject: [xsl] Using XSLT to add markup to a document
> 
> 
> Gentlepeople,
> 
> I'm struggling with a problem that I fear isn't easily solved 
> with XSLT, 
> but there are many experts on this list who might be able to 
> help.  The 
> brief summary of my problem is that I want to find certain words that 
> appear in paragraphs throughout a very large (XML) document 
> and mark up 
> those words without making any other changes to my document.
> 
> For example, consider a document with the following fragment:
> 
> <para>
> This is a sample document that deals with markup of 
> <emph>text</emph>. </para> <para> When one applies 
> <emph>markup</emph> to a large document, one is faced with 
> a <def>time-consuming</def> effort.
> </para>
> 
> If one of the words to which I wish to apply markup is 
> "markup" and another 
> is "document", then I would want the result to be something like this:
> 
> <para>
> This is a sample <special>document</special> that deals with 
> <special>markup</special> of <emph>text</emph>.
> </para>
> <para>
> When one applies <emph><special>markup</special></emph> to a large 
> <special>document</special>, one is faced with a 
> <def>time-consuming</def> 
> effort.
> </para>
> 
> As you see from this example, I want to *add* markup to the 
> words I have 
> found where they appear in my result tree, but copy 
> everything else in my 
> document to the output tree unchanged.
> 
> I tend to use Saxon (currently using 6.5.2) as my primary 
> XSLT engine, but 
> I also have Microsoft's MSXML 4.0 (and could undoubtedly find 
> others if 
> required to do so).
> 
> Any guidance or advice?
> 
> Many thanks,
>     Jim 
> ==============================================================
> ==========
> Jim Melton --- Editor of ISO/IEC 9075-* (SQL)     Phone: 
> +1.801.942.0144
> Oracle Corporation            Oracle Email: 
> mailto:jim.melton@xxxxxxxxxx
> 1930 Viscounti Drive          
> Standards email: mailto:jim.melton@xxxxxxx
> Sandy, UT 84093-1063              Personal email: 
mailto:jim@xxxxxxxxxxx
USA                                                Fax : +1.801.942.3345
========================================================================
=  Facts are facts.  However, any opinions expressed are the opinions  =
=  only of myself and may or may not reflect the opinions of anybody   =
=  else with whom I may or may not have discussed the issues at hand.  =
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