OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help

[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index]
XSLT filter, delete XML elements without leaving blank holes?

Hello, XML-dev:
I am writing an XSLT filter which reads an XML file, and 
generates a shorter XML file with some selected elements (and 
all their children) removed.  
So far, my filter gives me output which is valid, well-formed XML, 
but it has blank lines where the removed elements used to be. Formally, I
think the text node before the removed element remains, causing the 
blank line. I would like to remove this blank line, but leave all other 
indentation as-is. How can I do this?
(If you winning points on Stackoverflow, this question is at 
and I will upvote good answer there. A reply on this list is also welcome. 
The best answer so far on Stack Overflow says, essentially, that with 
XSLT 1.0 I'm hooped, but with XSLT 3.0 there are nice ways to express 
this filter.)

A simplified version of my XSLT filter is:
<?xml version="1.0" encoding="utf-8" ?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
  <xsl:output method="xml" omit-xml-declaration="no" indent="yes" encoding="utf-8" />
  <xsl:template match="node() | @*">
            <xsl:apply-templates select="node() | @*" />

  <xsl:template match="root/maybe[remove]" />


A very simplified version of my input XML file is:

<?xml version="1.0" encoding="utf-8" ?>
      <maybe><keep /></maybe>

Yes, the indentation is non-standard. I'm trying to make the point 
that I want the filter to leave the indentation it finds, except for 
the elements it removes. This lets me confirm the result using conventional
The output I get now (using xsltproc from libxslt, on MacOS X 10.10):
<?xml version="1.0" encoding="utf-8"?>

The blank line between <keep/> and </root> is what I'm trying to eliminate.

Now, elsewhere on [Stack Overflow], related questions "XSLT: how to prevent 
the XSLT code from generating redundant blank-space in output xml" 
and "Removing blank lines in XSLT" 
suggest adding xsl:strip-space <https://www.w3.org/TR/xslt#element-strip-space> 
to the XSLT filter:

    <xsl:strip-space elements="*"/>

When I try that, the output file no longer has the blank line, but it 
now has different indentation than the original:

<?xml version="1.0" encoding="utf-8"?>

(Note that <maybe> and <keep/> and </maybe> are now on separate lines, 
and indented differently.)

So, is there an XSLT element which will remove the blank line along 
with the element, but leave the other indentation and line breaks 

Also, my real files are from GnuCash <http://gnucash.org/> and have 
a much more complex structure. My real XSLT filter has a more 
complex match expression. Thus, an XSLT element which doesn't require me
to repeat the match expression is preferred.

<xsl:template match='gnc-v2//gnc:account[@version="2.0.0"]/act:slots/
        "Assets, Business, CAD:"

I'm using XSLT 1.0 because that's what my tool supports. Does XSLT 2.0 
provide a better answer for this question?
Thank you in advance for your help.
  --Jim DeLaHunt, jdlh@jdlh.com   http://blog.jdlh.com/ (and jdlh.com)
    multilingual websites consultant, Vancouver BC, Canada. 

[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index]

News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 1993-2007 XML.org. This site is hosted by OASIS