I support a web site which generates content XML that is then translated into web pages using XSLT. I have been asked to create a new stylesheet which will transform the output of the "archive" page into Atom for syndication. The problem I'm running into is that the archive page contains a rather large number of items — 142 and counting — and the feed should never have more than thirty items.
Currently, the output from the archive page looks something like this:
<archive>
<year>
<month>
<day>
<day>
...
</month>
...
</year>
...
</archive>
The year
and month
tags are used by the HTML transform but are completely irrelevant for an Atom feed. I had hoped that using the position()
function with the descendant axis would work (//day[position()>last()-30]
), but this selects the last 30 days of each month, which isn't at all what I need. :-)
Is there a way to do this with XSLT or XPath? Having to modify the XML generator to add, say, a feed="true"
attribute to the last thirty days seems like a pretty nasty kludge.
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