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RE: [xsl] remembering output

From: "Michael Kay" <mike@------------>
To:
Date: 2/1/2006 11:23:00 AM

> I have to do something like the following:
> 
> Pass 1:
> 
> 1) scan the text of the dxl file for <par>
> 
> 2) check to see if the referenced paragraph style and the child font
> definition have been emitted before
> 
> 3) If they haven't emit an appropriate odf style

Any description like this that uses words such as "before" and "after" means
that you're thinking procedurally. There's no defined order of execution in
XSLT, so no "before" and "after". The word "remembering" in your title also
gives the game away: with no "before", there can be no memory of what has
gone before.

The first thing you have to do is to rewrite your requirements functionally,
so the output is described as a function of the input, and not of the state
of processing. This might be as simple as changing rule 2 to

"check to see if the referenced style is the first occurrence of that style
within the input document".

Michael Kay
http://www.saxonica.com/

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RE: [xsl] remembering output