Hi,
Another long question from me.
I have a source xml similar to that shown below - where there is an
implicit hierarchy based on the indentation of the content of each cell. I
want to transform it to the result xml also shown below. I have written a
stylesheet which seems to achieve this, but being a novice at xslt I am
sure that there are much better ways to achieve this result. I would
really appreciate any suggestions to improve on this.
Thanks,
Grainne.
==========
source xml
==========
<?xml version="1.0" encoding="UTF-8"?>
<table>
<row><cell>Level one description(1)</cell></row>
<row><cell> Level two description(2)</cell></row>
<row><cell> Level three description(3)</cell></row>
<row><cell> Level two description(4)</cell></row>
<row><cell> Level three description(5)</cell></row>
<row><cell>Level one description(6)</cell></row>
<row><cell> Level two description(7)</cell></row>
<row><cell> Level three description(8)</cell></row>
<row><cell> Level four description(9)</cell></row>
<row><cell> Level two description(10)</cell></row>
</table>
==========
result xml
==========
<?xml version="1.0" encoding="UTF-8"?>
<descriptions>
<description row="1" level="1">Level one description(1)</description>
</descriptions>
<descriptions>
<description row="2" level="1">Level one description(1)</description>
<description row="2" level="2"> Level two description(2)</description>
</descriptions>
<descriptions>
<description row="3" level="1">Level one description(1)</description>
<description row="3" level="2"> Level two description(2)</description>
<description row="3" level="3"> Level three
description(3)</description>
</descriptions>
<descriptions>
<description row="4" level="1">Level one description(1)</description>
<description row="4" level="2"> Level two description(4)</description>
</descriptions>
<descriptions>
<description row="5" level="1">Level one description(1)</description>
<description row="5" level="3"> Level two description(4)</description>
<description row="5" level="4"> Level three
description(5)</description>
</descriptions>
<descriptions>
<description row="6" level="1">Level one description(6)</description>
</descriptions>
<descriptions>
<description row="7" level="1">Level one description(6)</description>
<description row="7" level="2"> Level two description(7)</description>
</descriptions>
<descriptions>
<description row="8" level="1">Level one description(6)</description>
<description row="8" level="2"> Level two description(7)</description>
<description row="8" level="3"> Level three
description(8)</description>
</descriptions>
<descriptions>
<description row="9" level="1">Level one description(6)</description>
<description row="9" level="2"> Level two description(7)</description>
<description row="9" level="3"> Level three
description(8)</description>
<description row="9" level="4"> Level four
description(9)</description>
</descriptions>
<descriptions>
<description row="10" level="1">Level one description(6)</description>
<description row="10" level="2"> Level two description(10)</description>
</descriptions>
=============
xslt stylesheet
=============
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/">
<xsl:apply-templates select="/table/row" mode="descriptions"/>
</xsl:template>
<xsl:template match="table/row" mode="descriptions">
<xsl:variable name="indent"
select="string-length(substring-before(cell,substring(normalize-space(cell),1,1)))"/>
<xsl:variable name="row" select="position()"/>
<descriptions>
<xsl:choose>
<xsl:when test="$indent = 0">
<description row="{$row}">
<xsl:attribute name="level">
<xsl:value-of select="1"/>
</xsl:attribute>
<xsl:value-of select="cell"/>
</description>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates
select="preceding::cell[(string-length(substring-before(.,substring(normalize-space(.),1,1))))
= 0][1]" mode="descHierarchy">
<xsl:with-param name="endAnchor"
select="generate-id(cell)"/>
<xsl:with-param name="indent"
select="$indent"/>
<xsl:with-param name="row"
select="$row"/>
</xsl:apply-templates>
</xsl:otherwise>
</xsl:choose>
</descriptions>
</xsl:template>
<xsl:template match="cell" mode="descHierarchy">
<xsl:param name="endAnchor"/>
<xsl:param name="indent" select="0"/>
<xsl:param name="row" select="1"/>
<xsl:for-each select=".|following::cell[generate-id() =
$endAnchor]|following::cell[following::cell[generate-id() = $endAnchor]][
(string-length(substring-before(.,substring(normalize-space(.),1,1)))) <
$indent]" >
<xsl:variable name="thisIndent"
select="(string-length(substring-before(.,substring(normalize-space(.),1,1))))"/>
<xsl:choose>
<xsl:when test="not(following::cell[ following::cell[generate-id() =
$endAnchor] ][
(string-length(substring-before(.,substring(normalize-space(.),1,1)))) =
$thisIndent ])">
<description row="{$row}">
<xsl:attribute name="level">
<xsl:value-of
select="position()"/>
</xsl:attribute>
<xsl:value-of select="."/>
</description>
</xsl:when>
</xsl:choose>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
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