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Subject: Re: [docbook-apps] Re: Docbook: Customising DTD to allow xinclude in place of...

I had the same problem a few months ago. I am using Saxon 6.5.5 and Fop 0.94 with the Jeuclid plugin.
I modified the DTD this way:
<!ENTITY % equation.content            "(alt?, (graphic+|mediaobject+|mathphrase+|mml:math))">
<!ENTITY % inlineequation.content    "(alt?, (inlinegraphic+|inlinemediaobject+|mathphrase+|mml:math))">
and my xincluded file "myequation.xml" looked like:
<?xml version="1.0" encoding="utf-16"?>
     <!DOCTYPE mml:math PUBLIC "-//W3C//DTD MathML 2.0//EN"
        "http://www.w3.org/TR/MathML2/dtd/mathml2.dtd" [
        <!ENTITY % MATHML.prefixed "INCLUDE">
        <!ENTITY % MATHML.prefix "mml">
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="mymath">
  <!-- <mml:math id="mymath">-->
And the way it was xincluded in the docbook file:
    <equation ><title>Here is a nice equation</title>
      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="myequation.xml"/>
I think that you got pretty close.
Hope this helps,
Dean Nelson
In a message dated 1/15/2008 2:27:48 P.M. Pacific Standard Time, paul.suckling@gmail.com writes:
Dear all

I have been searching for the answer to a problem in the mailing list
archives, but haven't been able to find it. I am hoping you might be
able to help me out.

I have previously followed the instructions here
(http://www.sagehill.net/docbookxsl/MathML.html) that show how to
customise the DTD to allow MathML to be included within equation,
inlineequation and informalequation elements.

I have just decided to follow the instructions here
(http://www.sagehill.net/docbookxsl/ValidXinclude.html), which explain
how to customise the DocBook DTD to allow xincludes in place of
various elements. I would like to extend this to allow xincludes in
place of the mml:math element within equation, inlineequation and
informalequation elements, so that something like

  <xi:include href="math.xml" xmlns:xi="http://www.w3.org/2001/XInclude" />

will validate too (using xmllint).

I guess I need to extend the examples given in the references above by
adding lines similar to

<!ENTITY % equation.mml:math.content "| xi:include">
<!ENTITY % inlineequation.mml:math.content "| xi:include">
<!ENTITY % informalequation.mml:math.content "| xi:include">

to my DTD but I don't know the correct syntax.

Can someone (Bob) help me out here please?

Thank you,


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