Re: [xsl] most efficient flat file listing to hierarchical

Subject: Re: [xsl] most efficient flat file listing to hierarchical
From: George Cristian Bina <george@xxxxxxxxxxxxx>
Date: Thu, 11 Jan 2007 12:34:36 +0200
Hi James,

I assume the files are those items that do not have further content. My take will be something like below. I believe there is still some room for optimizing the identification of a file.

<?xml version="1.0" encoding="US-ASCII"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; version="2.0">
<xsl:output indent="yes"/>
<xsl:template match="listing">
<dir>
<xsl:call-template name="group">
<xsl:with-param name="items" select="./item"/>
</xsl:call-template>
</dir>
</xsl:template>


<xsl:template name="group">
<xsl:param name="items" select="/.."/>
<xsl:param name="base" select="''"/>
<xsl:for-each select="$items[not(contains(substring-after(., $base), '/'))]">
<xsl:if test="not($items[current()!=. and contains(., current())])">
<file name="{substring-after(., $base)}"/>
</xsl:if>
</xsl:for-each>
<xsl:for-each-group select="$items[contains(substring-after(., $base), '/')]" group-adjacent="substring-before(substring-after(., $base), '/')" >
<xsl:sort select="."/>
<xsl:variable name="folder" select="substring-before(substring-after(current-group()[1], $base), '/')"/>
<dir name="{$folder}">
<xsl:call-template name="group">
<xsl:with-param name="items" select="current-group()"/>
<xsl:with-param name="base" select="concat($base, $folder, '/')"/>
</xsl:call-template>
</dir>
</xsl:for-each-group>
</xsl:template>
</xsl:stylesheet>


Best Regards,
George
---------------------------------------------------------------------
George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com


James Fuller wrote:
Hello All,

Can anyone propose a pure xslt (1 or 2) solution to transforming the following flat xml structure of directory paths into a hierarchical (nested) xml.

<?xml version='1.0'?>
<listing>
<item>cn/test.xml</item>
<item>en</item>
<item>en/test.html</item>
<item>en/test1.html</item>
<item>en/resource</item>
<item>en/resource/style</item> <item>en/resource/style/test.css</item>
<item>favicon.ico</item>
<item>cn</item>
</listing>


to


<dir> <file name="favicon.ico"/> <dir name="cn"> <file name="test.xml"/> </dir> <dir name="en"> <file name="test.html"/> <file name="test1.html"/> <dir name="resource"> <dir name="style"> <file name="test.css"/> </dir> </dir> </dir> </dir>

thx in advance.

cheers, Jim Fuller

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