On 17.09.2020 00:09, Imsieke, Gerrit, le-tex
gerrit(_dot_)imsieke(_at_)le-tex(_dot_)de wrote:
With a single for-each-group:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xs="http://www.w3.org/2001/XMLSchema";
exclude-result-prefixes="xs" version="3.0">
<xsl:mode default-mode="#unnamed"
use-accumulators="width"
on-no-match="shallow-copy"/>
<xsl:accumulator name="width" as="xs:integer" initial-value="0">
<xsl:accumulator-rule match="blocks" select="0"/>
<xsl:accumulator-rule match="block[not(@width)]" select="100"/>
<xsl:accumulator-rule match="block[@width]"
select="if ($value eq 100)
then xs:integer(@width)
else $value + xs:integer(@width)"/>
</xsl:accumulator>
<xsl:template match="blocks">
<xsl:copy>
<xsl:for-each-group select="block"
group-ending-with="block[accumulator-before('width') eq 100]">
<xsl:choose>
<xsl:when test="count(current-group()) eq 1">
<xsl:apply-templates select="current-group()"/>
</xsl:when>
<xsl:otherwise>
<block type="composite">
<xsl:apply-templates select="current-group()"/>
</block>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
I was wondering what output is wanted for
<blocks>
<block id="i1">content</block>
<block id="i2" width="33">content</block>
<block id="i3" width="67">content</block>
<block id="i4" width="50">content</block>
<block id="i5" width="50">content</block>
<block id="i6" width="25">content</block>
<block>content</block>
<block id="i7" width="55">content</block>
<block id="i8" width="20">content</block>
<block id="i9">content</block>
</blocks>
Neither my suggestion nor the above seem to only wrap the adjacent
block[@width] where the accumulator gives 100.
I complicated or strengthened my attempt as
<xsl:template match="blocks">
<xsl:copy>
<xsl:for-each-group select="block" group-adjacent="not(@width)">
<xsl:choose>
<xsl:when test="current-grouping-key()">
<xsl:apply-templates select="current-group()"/>
</xsl:when>
<xsl:otherwise>
<xsl:for-each-group select="current-group()"
group-ending-with="block[accumulator-before('width') eq 100]">
<xsl:choose>
<xsl:when
test="current-group()[last()][accumulator-before('width') eq 100]">
<block type="composite">
<xsl:apply-templates select="current-group()"/>
</block>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates select="current-group()"/>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
</xsl:copy>
</xsl:template>
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