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Patch #432117: Record namespaces in the DOM tree using the DOM xmlns prefix.

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Martin v. Löwis 2001-07-18 15:30:25 +00:00
parent b311ad5bcb
commit 984158d25b
1 changed files with 18 additions and 1 deletions
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19
Lib/xml/dom/pulldom.py
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@ -44,6 +44,9 @@ class PullDOM(xml.sax.ContentHandler):
self._locator = locator self._locator = locator
def startPrefixMapping(self, prefix, uri): def startPrefixMapping(self, prefix, uri):
if not hasattr(self, '_xmlns_attrs'):
self._xmlns_attrs = []
self._xmlns_attrs.append((prefix or 'xmlns', uri))
self._ns_contexts.append(self._current_context.copy()) self._ns_contexts.append(self._current_context.copy())
self._current_context[uri] = prefix or '' self._current_context[uri] = prefix or ''
@ -51,6 +54,13 @@ class PullDOM(xml.sax.ContentHandler):
self._current_context = self._ns_contexts.pop() self._current_context = self._ns_contexts.pop()
def startElementNS(self, name, tagName , attrs): def startElementNS(self, name, tagName , attrs):
# Retrieve xml namespace declaration attributes.
xmlns_uri = 'http://www.w3.org/2000/xmlns/'
xmlns_attrs = getattr(self, '_xmlns_attrs', None)
if xmlns_attrs is not None:
for aname, value in xmlns_attrs:
attrs._attrs[(xmlns_uri, aname)] = value
self._xmlns_attrs = []
uri, localname = name uri, localname = name
if uri: if uri:
# When using namespaces, the reader may or may not # When using namespaces, the reader may or may not
@ -76,7 +86,14 @@ class PullDOM(xml.sax.ContentHandler):
for aname,value in attrs.items(): for aname,value in attrs.items():
a_uri, a_localname = aname a_uri, a_localname = aname
if a_uri: if a_uri == xmlns_uri:
if a_localname == 'xmlns':
qname = a_localname
else:
qname = 'xmlns:' + a_localname
attr = self.document.createAttributeNS(a_uri, qname)
node.setAttributeNodeNS(attr)
elif a_uri:
prefix = self._current_context[a_uri] prefix = self._current_context[a_uri]
if prefix: if prefix:
qname = prefix + ":" + a_localname qname = prefix + ":" + a_localname