[lxml-dev] Adding a Stylesheet PI when creating new XML documents

[Lee Brown]

Greetings!

I think the prependPI() is slightly better, as it is reminiscent of the append()
method.

Here's a silly thought:

Couldn't we just save any PIs preceeding the root element as members of docinfo?
That's where the doctype, xml version, and other "pre-root" stuff lives.
Doesn't "tree.docinfo.stylesheet" or "tree.docinfo.PI['stylesheet']" make more
sense than the way we're doing it now?

(And wouldn't it have been nice if I'd thought of this several months ago?)

-----Original Message-----
From: Stefan Behnel [mailto:stefan_ml at behnel.de] 
Sent: Thursday, March 22, 2007 2:23 PM
To: Lee Brown
Cc: lxml-dev at codespeak.net
Subject: Re: [lxml-dev] Adding a Stylesheet PI when creating new XML documents

Hi!

Lee Brown wrote:
> Parsing an XSLT stylesheet from an xml-stylesheet PI is working just 
> fine, but now I'm trying to add an xml-stylesheet PI to a new XML tree 
> created from within lxml.  I've looked back through the list traffic 
> and done some code introspection but I can't find anything.
> 
> Did we ever decide upon / create an API for adding a stylesheet PI to 
> a new tree?

No, not yet. :)

I see two possibilities: add a "prependPI(pi)" method to ElementTree, or add a
method "addToTree(tree)" method to ProcessingInstruction. We might then also
need a way to get rid of them again - although, well, you could always move them
to a different tree, which would obviously remove them from the current one.

Ok, so any preferences?

Stefan