Hi !
I'm trying to create this issue against Genshi issue tracker
=========
Type: defect Priority: blocker
Milestone: 0.7 Component: XPath support
Version: devel Keywords: xpath, qualified names, attribute axis
Consider the following script
{{{#!py
'''
Created on Jul 9, 2013
@author: olemis
'''
from pprint import pprint
from genshi.template.markup import MarkupTemplate
if __name__ == '__main__':
template_source = """<?xml version="1.0" encoding="utf-8"?>
<element xmlns:nspc1="http://foo.org";
nspc1:attribute="value">
</element>
"""
data = {}
# XML stream
template = MarkupTemplate(template_source)
stream = template.generate(**data)
for ev in stream.select('./@nspc1:attribute', {'nspc1' : 'http://foo.org'}):
pprint(ev)
}}}
By executing it it's possible to notice how ''XPath'' expressions will
always evaluate to `None` when matching qualified attribute names.
{{{#!sh
$ ./test_select1.py
Attrs([('attribute', None)])
}}}
After modifying `QualifiedNameTest.__call__` like shown below ...
{{{#!py
def __call__(self, kind, data, pos, namespaces, variables):
qname = QName('%s}%s' % (namespaces.get(self.prefix), self.name))
if kind is START:
if self.principal_type is ATTRIBUTE and qname in data[1]:
return Attrs([(self.name, data[1].get(qname))])
else:
return data[0] == qname
}}}
... the result looks better
{{{#!sh
$ ./test_select1.py
Attrs([('attribute', u'value')])
}}}
Moreover this version will preserve namespace information
{{{#!py
def __call__(self, kind, data, pos, namespaces, variables):
qname = QName('%s}%s' % (namespaces.get(self.prefix), self.name))
if kind is START:
if self.principal_type is ATTRIBUTE and qname in data[1]:
return Attrs([(self.name, data[1].get(qname))])
else:
return data[0] == qname
}}}
Results
{{{#!sh
$ ./test_select1.py
Attrs([(QName('http://foo.org}attribute'), u'value')])
}}}
IMO the last one is the most accurate considering that this may be
used to insert attributes in elements (e.g. `py:attrs="select('@*')"`
in [wiki:GenshiTutorial#AddingaLayoutTemplate Genshi tutorial]).
BTW , I set version=develop in the ticket because this issue was
detected using both ''0.7'' and ''0.6'', and there's no option to
select the former.
priority=blocker because IMO this ticket only is a good reason to release 0.7.1
=========
I always receive «Submission rejected as potential spam» , so I give up .
--
Regards,
Olemis.
Apache™ Bloodhound contributor
http://issues.apache.org/bloodhound
Blog ES: http://simelo-es.blogspot.com/
Blog EN: http://simelo-en.blogspot.com/
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