At 2011-12-12 16:54 -0800, Lou Argyres wrote:
I hope this makes sense.
I have "flat" outline list structures, the numbering of which is
controlled by a "level" attribute, that I renumber based on name-spaced
change tracking tags where I need to output Accept-All and Reject-All
versions to be redlined in other application formats after
transformations. (They're good for unsophisticated users who have
trouble editing embedded lists.)
The best I've come up with is a recursive template to count previous
same level items and stop at a lower level (skipping adds/deletes as
needed).
Is there an XPATH-2 select that can count preceding-siblings up to the
first preceding @level = $lvl-1?
<xsl:variable name="lvl" select="@level"/>
...
... select="(count(preceding-sibling::section[@level=$lvl]) + 1) -
count(preceding-sibling::section[@level=$lvl][not(following-sibling::sec
tion[preceding-sibling::section[@level=number($lvl)-1][1]])])"
picks up all previous same-level items.
<flatOutline>
<item numDisplay="I." level="1" />
<item numDisplay="II." level="1" />
<item numDisplay="A." level="2" />
<item numDisplay="B." level="2" />
<item numDisplay="C." level="2" />
<item numDisplay="III." level="1"/>
<item numDisplay="A." level="2"/>
<item numDisplay="1." level="3" />
<item numDisplay="2." level="3" />
<item numDisplay="3." level="3" />
<item numDisplay="4." level="3" />
<item numDisplay="B." level="2"/>
<item numDisplay="1." level="3" />
<item numDisplay="2." level="3" />
<item numDisplay="3." level="3" />
<item numDisplay="C." level="2"/>
</flatOutline>
Lou Argyres
Continuing Education of the Bar - California
Oakland, CA
Lou(_dot_)Argyres(_at_)ceb(_dot_)ucla(_dot_)edu
If you are simply counting, then the following works in both XSLT 1
and XSLT 2, as it takes the difference between the count to the
beginning and the count to the beginning from the last disqualifying
entry (note the two-step location path in the second count() function call):
t:\ftemp>xslt lou.xml lou1.xsl
<?xml version="1.0" encoding="utf-8"?>
<item numDisplay="I." level="1">1</item>
<item numDisplay="II." level="1">2</item>
<item numDisplay="A." level="2">1</item>
<item numDisplay="B." level="2">2</item>
<item numDisplay="C." level="2">3</item>
<item numDisplay="III." level="1">3</item>
<item numDisplay="A." level="2">1</item>
<item numDisplay="1." level="3">1</item>
<item numDisplay="2." level="3">2</item>
<item numDisplay="3." level="3">3</item>
<item numDisplay="4." level="3">4</item>
<item numDisplay="B." level="2">2</item>
<item numDisplay="1." level="3">1</item>
<item numDisplay="2." level="3">2</item>
<item numDisplay="3." level="3">3</item>
<item numDisplay="C." level="2">3</item>
t:\ftemp>type lou1.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output indent="yes"/>
<xsl:template match="/">
<xsl:for-each select="/*/item">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:value-of
select="count(preceding-sibling::item[@level=current()/@level]) -
count(preceding-sibling::item[@level<current()/@level][1]/
preceding-sibling::item[@level=current()/@level]) + 1"/>
</xsl:copy>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
t:\ftemp>
If you actually want to do something with the groups at each level,
then it is best to use XSLT 2:
t:\ftemp>xslt2 lou.xml lou2.xsl
<?xml version="1.0" encoding="UTF-8"?>
<section level="1">
<item numDisplay="I." level="1"/>
</section>
<section level="1">
<item numDisplay="II." level="1"/>
<section level="2">
<item numDisplay="A." level="2"/>
<item numDisplay="B." level="2"/>
<item numDisplay="C." level="2"/>
</section>
</section>
<section level="1">
<item numDisplay="III." level="1"/>
<section level="2">
<item numDisplay="A." level="2"/>
<section level="3">
<item numDisplay="1." level="3"/>
<item numDisplay="2." level="3"/>
<item numDisplay="3." level="3"/>
<item numDisplay="4." level="3"/>
</section>
</section>
<section level="2">
<item numDisplay="B." level="2"/>
<section level="3">
<item numDisplay="1." level="3"/>
<item numDisplay="2." level="3"/>
<item numDisplay="3." level="3"/>
</section>
</section>
<section level="2">
<item numDisplay="C." level="2"/>
</section>
</section>
t:\ftemp>type lou2.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="2.0">
<xsl:output indent="yes"/>
<xsl:template match="/" name="do-next-group">
<xsl:param name="group" select="/*/item"/>
<xsl:param name="level" select="1"/>
<xsl:choose>
<xsl:when test="$group[@level!=$level]">
<!--then more splitting of the group is necessary-->
<xsl:for-each-group select="$group"
group-starting-with="item[@level=$level]">
<section level="{$level}">
<!--put the current level into this section-->
<xsl:copy-of select="current-group()[@level=$level]"/>
<!--only nest when this group has members from deeper levels-->
<xsl:if test="current-group()[@level!=$level]">
<xsl:call-template name="do-next-group">
<xsl:with-param name="group"
select="current-group()[@level!=$level]"/>
<xsl:with-param name="level" select="$level+1"/>
</xsl:call-template>
</xsl:if>
</section>
</xsl:for-each-group>
</xsl:when>
<xsl:otherwise>
<!--no more splitting of the group is necessary-->
<section level="{$level}">
<xsl:copy-of select="$group"/>
</section>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
t:\ftemp>
I hope this helps.
. . . . . . . . . . Ken
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