RE: [xsl] nesting non-nested nodes

That's a good start, but I think you'll need some more. Your code
presumes that there is exactly one paragraph following each head level
(which the OP also specified, but which would not be true in most
real-world situations). Also, what if there are several 1st level heads?
Your code would select all of the 2nd level heads whether they belong
under that 1st level head or not. Finally, your code presumes that an
author always puts only 2nd level heads under a 1st level head, and
never jumps to a 3rd level head (for example). Real authors (pesky
people that they are!) do break the rules regularly (or should I say not
so regularly!).

I would combine this code with some grouping code (check the FAQ) to
capture multiple sibling paragraphs as well as making sure that you get
what you need under a particular head and not heads which belong under a
different head.

Hope that helps!

Chris Loschen

-----Original Message-----
From: Rudolf P.Weinmann [mailto:rudolf.weinmann@xxxxxxxxxxxx]
Sent: Tuesday, June 07, 2005 2:45 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] nesting non-nested nodes

Andrew

I amended your xml for better readability and control of the result
after transformation.

<?xml version="1.0" encoding="UTF-8?>
<Root>
	<head head-level="1">head title A1</head>
	<p>paragraph of A1</p>
	<head head-level="2">sub-head title A1.1</head>
	<p>paragraph of A1.1</p>
	<head head-level="2">sub-head title A1.2</head>
	<p>paragraph of A1.2</p>
	<head head-level="3">sub-sub-head title A1.2.1</head>
	<p>paragraph of A1.2.1</p>
	<head head-level="3">sub-sub-head title A1.2.2</head>
	<p>paragraph of A1.2.2</p>
	<head head-level="1">head title B1</head>
	<p>paragraph of B1</p>
</Root>

A similar question has been answered, please see '[xsl] flat XML to
normal XML' in this list.

If you know the highest value for @head-level, the xslt is straight
forward.
Note, that the <xsl:apply-template
select="followin-sibling::head[1][@head-level='3']"/>
in the last template of the stylesheet is placed *after* the </level>
because head elements with @head-level='3' must not be nested.

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<!-- Created:2005-06-07 Author:rudolf.weinmann@xxxxxxxxxxxx
http://www.assentis.com --> <xsl:output method="xml" encoding="UTF-8"
indent="yes"/>

<xsl:template match="/">
	<NewDataSet>
		<!-- select all top level head elements -->
		<xsl:apply-templates
select="Root/head[@head-level='1']"/>
	</NewDataSet>
</xsl:template>

<xsl:template match="head[@head-level='1']">
	<level>
		<title>
			<xsl:value-of select="."/>
		</title>
		<xsl:copy-of select="following-sibling::p[1]"/>
		<!-- select all adjaicent head elements with the next
higher @head-level -->
		<xsl:apply-templates
select="following-sibling::head[@head-level='2']"/>
	</level>
</xsl:template>

<xsl:template match="head[@head-level='2']">
	<level>
		<title>
			<xsl:value-of select="."/>
		</title>
		<xsl:copy-of select="following-sibling::p[1]"/>
		<!-- select the adjaicent head element, if it is the
next higher @head-level -->
		<xsl:apply-templates
select="following-sibling::head[1][@head-level='3']"/>
	</level>
</xsl:template>

<xsl:template match="head[@head-level='3']">
	<level>
		<title>
			<xsl:value-of select="."/>
		</title>
		<xsl:copy-of select="following-sibling::p[1]"/>
	</level>
	<!-- select the adjaicent head element, if it is the next higher
@head-level -->
	<!-- this apply-templates is *after* </level>, because
@head-level='3' elements must not be nested -->
	<xsl:apply-templates
select="following-sibling::head[1][@head-level='3']"/>
</xsl:template>

</xsl:stylesheet>

And the result:
<?xml version='1.0' encoding='UTF-8' ?>
<NewDataSet>
  <level>
    <title>head title A1</title>
    <p>paragraph of A1</p>
    <level>
      <title>sub-head title A1.1</title>
      <p>paragraph of A1.1</p>
    </level>
    <level>
      <title>sub-head title A1.2</title>
      <p>paragraph of A1.2</p>
      <level>
        <title>sub-sub-head title A1.2.1</title>
        <p>paragraph of A1.2.1</p>
      </level>
      <level>
        <title>sub-sub-head title A1.2.2</title>
        <p>paragraph of A1.2.2</p>
      </level>
    </level>
  </level>
  <level>
    <title>head title B1</title>
    <p>paragraph of B1</p>
  </level>
</NewDataSet>

Hope this helps,
Rudolf

On Tue, 7 Jun 2005 10:48:49 -0400, you wrote:

>Hello all,
>I searched the archives for an answer to this, but I'm not sure how
>best to describe what I'm looking for. Sorry if this question has been
>asked previously. I'm trying to take non-nested nodes and get them
>nested. I'm using XSL version 1.0 and my processor is Libxslt.
>
>SOURCE:
>
><head head-level="1">
>	head title
></head>
><p>
>	paragraph(s)
></p>
><head head-level="2">
>	sub-head title
></head>
><p>
>	paragraph(s)
></p>
><head head-level="2">
>	sub-head title
></head>
><p>
>	paragraph(s)
></p>
><head head-level="3">
>	sub-sub-head title
></head>
><p>
>	paragraph(s)
></p>
><head head-level="1">
>	head title
></head>
><p>
>	For simplicity, I've reduced any amount of content in between
head's
>to a single p.
></p>
>
>
>DESIRED RESULT:
>
><level>
>	<title>
>		head title
>	</title>
>	<p>
>		paragraph(s)
>	</p>
>	<level>
>		<title>
>			sub-head title
>		</title>
>		<p>
>			paragraph(s)
>		</p>
>	</level>
>	<level>
>		<title>
>			sub-head title
>		</title>
>		<p>
>			paragraph(s)
>		</p>
>		<level>
>			<title>
>				sub-sub-head title
>			</title>
>			<p>
>				paragraph(s)
>			</p>
>		</level>
>	</level>
></level>
><level>
>	<title>
>		head title
>	</title>
>	<p>
>		For simplicity, I've reduced any amount of content in
between head's
>to a single p.
>	</p>
></level>
>
>
>Thank you all. This list is such a valuable resource.
>
>-Andrew






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