[XML-SIG] Attribute value normalization

[Rich Salz]

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I'm using PyExpat.Reader, but it's not clear to me who should be doing
this -- pyexpat or the lower layers or xml.dom ?

Attribute-value normalization ( http://www.w3.org/TR/REC-xml#AVNormalize
) isn't being done.

Here's a test case.  For more egregious problems, change the "which"
assignment to eg3.

Any ideas where to start looking?
	/r$

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#! /usr/bin/env python
eg3 = """<doc>
   <norm attr=' &apos;   &#x20;&#13;&#xa;&#9;   &apos; '/>
   <normNames attr='   A   &#x20;&#13;&#xa;&#9;   B   '/>
   <normId id=' &apos;   &#x20;&#13;&#xa;&#9;   &apos; '/>
</doc>"""

eg4 = """<doc>
   <norm attr=' &apos;   &#x20;&#9;   &apos; '/>
   <normNames attr='   A   &#x20;&#9;   B   '/>
   <normId id=' &apos;   &#x20;&#9;   &apos; '/>
</doc>"""

from xml.dom.ext import PrettyPrint, reader
from xml.dom.ext.reader import PyExpat

which = eg4
r = PyExpat.Reader()
dom = r.fromString(which)
PrettyPrint(dom)

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