Re: General algorithm for finding nodes between PIs

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Subject: Re: General algorithm for finding nodes between PIs
From: "Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 27 Jan 2017 14:57:14 -0000

On 27.01.2017 15:24, Rick Quatro rick@xxxxxxxxxxxxxx wrote:

I modified my input document slightly:

<?xml version="1.0" encoding="UTF-8"?>
<info>
    <?Fm Condstart VbV-VCO?>
    <p>For this, use <b>that </b>to do that.</p>
    <?Fm Condend VbV-VCO?>
    <p><?Fm Condstart USB?>If you need this, do that.<?Fm Condend USB?></p>
    <p>Outside paragraph.</p>
</info>

This is close, but I don't want to lose any elements from the output, like
the parents of the processing instructions (<info>, <p>). Also, I am not
picking up my last <p> element. Thank you for the generous help.

Here is an adaption that tries to keep all data and simply replaces any pi(star/end) pair with a wrapper 'group' element:

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

	<xsl:template match="@* | node()">
		<xsl:copy>
			<xsl:apply-templates select="@*, node()"/>
		</xsl:copy>
	</xsl:template>

<xsl:template match=" *[processing-instruction('Fm')[starts-with(., 'Condstart')]]"> <xsl:copy> <xsl:apply-templates select="@*"/> <xsl:for-each-group select="node()" group-starting-with=" processing-instruction('Fm')[starts-with(., 'Condstart')]"> <xsl:choose> <xsl:when test="self::processing-instruction('Fm')[starts-with(., 'Condstart')]"> <xsl:variable name="pi-start-name" as="xs:string" select="."/> <xsl:variable name="pi-end-name" select="replace(., 'Condstart', 'Condend')"/> <xsl:for-each-group select="current-group() except ." group-ending-with="processing-instruction('Fm')[. = $pi-end-name]"> <xsl:choose> <xsl:when test=" current-group()[last()][self::processing-instruction('Fm')[. = $pi-end-name]]"> <group name="{$pi-start-name}"> <xsl:apply-templates select="current-group()[position() ne last()]"/> </group> </xsl:when> <xsl:otherwise> <xsl:apply-templates select="current-group()"/> </xsl:otherwise> </xsl:choose> </xsl:for-each-group> </xsl:when> <xsl:otherwise> <xsl:apply-templates select="current-group()"/> </xsl:otherwise> </xsl:choose> </xsl:for-each-group> </xsl:copy> </xsl:template>

</xsl:stylesheet>

so that gives me

<info>
	<group name="Condstart VbV-VCO">
	<p>For this, use <b>that </b>to do that.</p>
	</group>
	<p><group name="Condstart USB">If you need this, do that.</group></p>
	<p>Outside paragraph.</p>
</info>

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Re: General algorithm for finding nodes between PIs, (continued)

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