Dot Porter wrote:
<group>
<text xml:id="A15">
<seg n="220.2">...</seg>
<seg n="220.3">...</seg>
(etc.)
</text>
<text xml:id="B15">
<seg n="220.2">...</seg>
<seg n="220.3">...</seg>
(etc.)
</text>
</group>
The texts may or may not have all the same segments (so text A may
have seg[(_at_)n='223.1'] and text B may not, or vice versa). In addition
the numbers are not unique to each segment (there may be several segs
in a row with the same number).
Given this, I would like to generate a file that pulls together the
like segments from each text, resulting in something that looks like
this:
<app>
<rdg wit="#A15"><seg n="220.2">...</seg></rdg>
<rdg wit="#B15><seg n="220.2">...</seg></rdg>
(etc.)
</app>
<app>
<rdg wit="#A15"><seg n="220.3">...</seg></rdg>
<rdg wit="#B15><seg n="220.3">...</seg></rdg>
(etc.)
</app>
<app>
<!-- for example, A15 lacks seg[(_at_)n='223.1'] -->
<rdg wit="#B15"><seg n="223.1">...</seg></rdg>
(etc.)
</app>
Here is an XSLT 2.0 solution:
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="2.0">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<xsl:for-each-group select="group/text/seg" group-by="@n">
<app>
<xsl:apply-templates select="current-group()"/>
</app>
</xsl:for-each-group>
</xsl:template>
<xsl:template match="seg">
<reg wit="#{../@xml:id}">
<xsl:copy-of select="."/>
</reg>
</xsl:template>
</xsl:stylesheet>
--
Martin Honnen
http://msmvps.com/blogs/martin_honnen/
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