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Re: using normalize-space with mixed element content

Subject: Re: using normalize-space with mixed element content
From: David Carlisle <davidc@xxxxxxxxx>
Date: Tue, 08 Jun 2010 23:39:01 +0100
Re:  using normalize-space with mixed element content
On 08/06/2010 23:24, Lynn Murdock wrote:

i want to remove trailing whitespace from the contents of an element (<article-title>), but because that element sometimes contains character-level formatting elements (<italic>) as well as text, normalize-space is creating problems. if i use normalize-space(), i lose the italics in the output. (i'm transforming to html.)

here's an example of where i want to remove whitespace (i want to remove the space before</article-title>):

         <article-title>Effect of a Brief Video Intervention on Incident Infection among Patients Attending Sexually Transmitted Disease Clinics</article-title>

and here's the xsl code i've used:

     <xsl:template match="title-group/article-title" mode="none">
         <xsl:value-of select="normalize-space(.)"/>

this code works most of the time, but in a situation like this:

<article-title>A Global Survey of Gene Regulation during Cold Acclimation in<italic>Arabidopsis</italic> <italic>thaliana</italic></article-title>

it ends up removing the italic formatting.

does anyone know of a way to strip the whitespace that i don't want (in the first example) while keeping the character formatting that i do want (in the second example)?

any pointers would be greatly appreciated.



basically whenever doing string operations like thi son mixed content, the trick is to apply the operation to th etext nodes rather than al the content, so instead of

<xsl:template match="title-group/article-title" mode="none">


<xsl:template match="title-group/article-title/node()[last()][self::text()]" mode="none">

so you just apply this to the last node, if it's text.
and you want to remove trailing white space

if you are using xslt2 could use a regxep, but possibly if you also want to collapse space, the xslt1 way with normalise-space is easiest.

<xsl:value-of select="substring(normalize-space(concat('x',.)),2)"/>


then one for the first node:

<xsl:template match="title-group/article-title/node()[1][self::text()]" mode="none">
nt to collapse space, the xslt1 way with normalise-space is easiest.

<xsl:variable name="x" select="normalize-space(concat(.,'x'))"/>
<xsl:value-of select="substring($x,1,string-length($x)-1)"/>

and one for the simple case (which you need otherwise you will get an error about both the above matching the same node)

 <xsl:template match="title-group/article-title[not(*)]" mode="none">
  <xsl:value-of select="normailze-space(.)"/>


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