I don't know whether this is a genshi question or a trac question, but
I'll start here and relocate if need be.
I have two plugins for my Trac installation. Each of them has perhaps a
peculiar need: they each implement ITemplateStreamFilter.filter_stream,
and in filter_stream they each need to examine stream content to make
decisions about what filter operation to perform.
I don't know a lot about what I'm doing, but it seems that as soon as
I do anything (.render(), .select()) to the stream, it is consumed
completely and is no longer available to be filtered. I've determined
that I can "copy" it by rendering HTML and re-parsing that:
html = stream.render()
# or: html = stream.select('.').render()
copy = genshi.XML(html)
stream = genshi.XML(html)
This works, as far as my immediate needs. However, each of my plugins
also uses trac.web.chrome.add_script() to add a javascript source to the
output. But somehow, for reasons I've been unable to find, if I consume
my stream and reinstantiate it, all the scripts added by plugins to the
request via add_script() are lost. (I could probably use Transformer to
work around this in my plugin, but it still ruins the day for any other
plugins making use of add_script().)
Can anyone tell me what I'm doing wrong, where to find documentation
relating to this problem, anything? I'm feeling pretty exhausted on it.
Thanks.
--
-D. [email protected] NSIT University of Chicago
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