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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: How to remove (in addition) empty attributes?
 As so often, the problem here is in the specification. You have solved the problems of removing elements according to one rule: 1. elements that have no content (child nodes) and of attributes according to another: 2. attributes that have no value but not of removing elements defined as "empty" according to a third: 3. elements that contain only elements and attributes that would removed (by any rule). You do infer that since your third rule is recursive, a full solution will also be recursive. If you can rewrite rule 3 so it doesn't invoke itself, you can write a transform that doesn't have to process its own results recursively. For example, you might say: 3a. elements none of whose attributes have values and whose children are empty (have no children) -- but of course 3a will fail if your containment of such elements goes deeper than two. Here's a recursive solution (note: XSLT 2.0 only). It works by passing the tree through a set of "scrubbing" templates, and also through a set of copying templates, repeating as necessary until both results are the same. It assumes you don't have any whitespace-only text nodes you want to preserve: <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-result-prefixes="xs" version="2.0"> <xsl:output indent="yes"/> <xsl:strip-space elements="*"/> <xsl:template match="/|*|@*|text()" mode="copy scrub">
<xsl:copy>
<xsl:apply-templates select="*|@*|text()" mode="#current"/>
</xsl:copy>
</xsl:template><xsl:template match="*[empty(*|text()|@*[normalize-space()])]" mode="scrub"/> <xsl:template match="@*[not(normalize-space())]" mode="scrub"/> <xsl:template match="/">
<xsl:variable name="scrubbed">
<xsl:apply-templates select="." mode="scrub"/>
</xsl:variable>
<xsl:variable name="copied">
<xsl:apply-templates select="." mode="copy"/>
</xsl:variable>
<xsl:choose>
<xsl:when test="deep-equal($scrubbed, $copied)">
<xsl:sequence select="$scrubbed"/>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates select="$scrubbed"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template></xsl:stylesheet> Tested only lightly.... Cheers, Wendell At 02:40 AM 12/3/2009, you wrote: The problem with this is that only elements OR attributes are stripped but not both at the same time. ====================================================================== Wendell Piez mailto:wapiez@xxxxxxxxxxxxxxxx Mulberry Technologies, Inc. http://www.mulberrytech.com 17 West Jefferson Street Direct Phone: 301/315-9635 Suite 207 Phone: 301/315-9631 Rockville, MD 20850 Fax: 301/315-8285 ---------------------------------------------------------------------- Mulberry Technologies: A Consultancy Specializing in SGML and XML ====================================================================== 
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