Re: [xsl] How to correctly position breaks in mixed content?

["Geert Bormans geert@xxxxxxxxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hi Trevor,

One option would be to replace the mixed content elements by empty elements
<var>n<superscript>th</superscript></var>
to become
<var type="s" id="ID01"/>n<superscript type="s" id="ID02"/ >th<superscript
type="e" id="ID02" ><var type="r" id="ID01"/>

if so all your characters are siblings, so can do a line breaking algorithm,
preserving the empty elements
after that you simply reconstruct the elements

Met vriendelijke groeten,
Best regards,

Geert Bormans

----- Op 14 apr 2021 om 11:46 schreef Trevor Nicholls
trevor@xxxxxxxxxxxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>:



NB currently XSL 2.0



I'm struggling with what I thought would be a simple enough problem:



given content like this



"<code>Mixed content, mainly text but with some text such as <var>variable
names</var> wrapped in elements, sometimes nested like a reference to the
<var>n<superscript>th</superscript></var> occurrence.</code>"



and a constraint that code should be rendered within a fixed width box, I need
to come up with a template which will process the <code> element and transform
it into its word-wrapped equivalent.



I don't need to concern myself with character sizes or styles; the output of
this transformation will always be rendered in a fixed-width font.



I can write something which works fine if a <code> element is simple text -
but the requirement is for this to work with mixed content too. In the above
example, if the constraint is that the line must wrap at or before 64
characters, the first break comes in the middle of the first <var>.



Assuming that the <code> example above is the current element, what I am
trying to write is a template



<xsl:template name="wordwrap">

<xsl:param name="input" select="." />

<xsl:param name="linelen" select="64" />

b&

</xsl:template>



that will output



"Mixed content, mainly text but with some text such as
<var>variable</var><wordwrap/>

<var>names</var> wrapped in elements, sometimes nexted like a reference
to<wordwrap/>

the <var>n<superscript>th</superscript></var> occurrence."



Can anyone offer me some pointers as to how I should implement this?



Cheers

T
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