If you can modify the XSLT stylesheets a little, you could use
normalize-space() to automatically remove the whitespace.
Something like this:
<xsl:template match="title" mode="toc">
<fo:inline>
<xsl:value-of select="normalize-space()"/>
</fo:inline>
</xsl:template>
This won't work if you need to handle other kinds of elements in <title>
tags besides text nodes though, like <title><b>Bold</b> text</title>.
Another solution could be to run the XML input through a pretty-printer
(or rather, the opposite of one) that removes this "insignificant"
whitespace before applying the XSLT.
I had a similar problem (but not specifically related to
XSL-FO/FOP) where I wanted to remove extra whitespace from
certain elements. I ended up writing this small utility:
https://github.com/kibook/xml-utils/tree/master/xml-trimspace
This is basically the reverse-pretty-printer described above, but it
targets only specified elements, so that ones where "extra" whitespace
might actually be significant are ignored.
Example usage:
[input.xml]
<section>
<title>
Do <b>This</b> First
</title>
</section>
$ xml-trimspace title < input.xml > output.xml
[output.xml]
<section>
<title>Do <b>This</b> First</title>
</section>
Mark Giffin <m1...@earthlink.net> wrote:
> I'm using FOP 2.3 with the DITA Open Toolkit. The <title> tags in DITA
> topics are used in the table of contents in a PDF. Each table of
> contents line is justified like this in the PDF:
>
> (left margin)Intro to
> XYZ........................................................14(right margin)
> (left margin)Setting Up
> XYZ...................................................18(right margin)
>
> Most lines line up neatly on the right margin, but a few do not go to
> the margin. The cause of a line that does not go all the way to the
> right margin is a <title> tag with white space in it like this:
>
> <title>
> Do This First
> </title>
>
> This white space gets copied over to the XSL-FO produced by the DITA OT:
>
> height="150%"><fo:inline end-indent="14pt">
> Do This First
> </fo:inline><fo:inline color="black"
> keep-together.within-line="always" start-indent="-14pt"><fo:leader
> color="black" leader-pattern="dots"/><fo:page-number-citation...
>
> And FOP renders this in the PDF like this, where the line does not go
> all the way to the right margin:
>
> (left margin)Do This
> First....................................................10 (right margin)
> (left margin)Intro to
> XYZ........................................................14(right margin)
> (left margin)Setting Up
> XYZ...................................................18(right margin)
>
> When I remove the whitespace in the XSL-FO, the line renders correctly,
> all the way to the right margin. Both Antenna House and XEP render the
> line correctly, ignoring the extraneous whitespace. This seems like a
> FOP bug, is there a fix for this? Other than removing the whitespace?
>
> Thanks,
> Mark
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