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########################################################################
#
# File Name: AttributeElement.py
#
#
"""
Implementation of the XSLT Spec element stylesheet element.
WWW: http://4suite.com/4XSLT e-mail: support@4suite.com
Copyright (c) 1999 FourThought LLC, USA. All Rights Reserved.
See http://4suite.com/COPYRIGHT for license and copyright information
"""
import cStringIO
from xml.dom import EMPTY_NAMESPACE
import xml.dom.Element
import xml.dom.ext
import xml.xslt
from xml.xslt import XsltElement, XsltException, Error
from xml.xslt.AttributeValueTemplate import AttributeValueTemplate
from xml.xpath import Conversions
#FIXME: Add check for Attribute inside an Element.
class AttributeElement(XsltElement):
legalAttrs = ('name', 'namespace')
def __init__(self, doc, uri=xml.xslt.XSL_NAMESPACE,
localName='attribute', prefix='xsl', baseUri=''):
XsltElement.__init__(self, doc, uri, localName, prefix, baseUri)
def setup(self):
name = self.getAttributeNS(EMPTY_NAMESPACE, 'name')
if not name:
raise XsltException(Error.ATTRIBUTE_MISSING_NAME)
self._name = AttributeValueTemplate(name)
namespace = self.getAttributeNS(EMPTY_NAMESPACE, 'namespace')
self._namespace = AttributeValueTemplate(namespace)
self._nss = xml.dom.ext.GetAllNs(self)
return
def instantiate(self, context, processor):
origState = context.copy()
context.setNamespaces(self._nss)
name = self._name.evaluate(context)
namespace = self._namespace.evaluate(context)
(prefix, local) = xml.dom.ext.SplitQName(name)
if not namespace:
if prefix:
namespace = context.processorNss[prefix]
if local == 'xmlns':
name = prefix
#FIXME: Add error checking of child nodes
processor.pushResult()
for child in self.childNodes:
context = child.instantiate(context, processor)[0]
rtf = processor.popResult()
value = Conversions.StringValue(rtf)
processor.writers[-1].attribute(name, value, namespace)
processor.releaseRtf(rtf)
context.set(origState)
return (context,)
def __getinitargs__(self):
return (None, self.namespaceURI, self.localName, self.prefix, self.baseUri)
def __getstate__(self):
base_state = XsltElement.__getstate__(self)
new_state = (base_state, self._nss, self._name, self._namespace)
return new_state
def __setstate__(self, state):
XsltElement.__setstate__(self, state[0])
self._nss = state[1]
self._name = state[2]
self._namespace = state[3]
return
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