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########################################################################
#
# File Name: VariableElement.py
#
#
"""
Implementation of the XSLT Spec variable stylesheet element.
WWW: http://4suite.com/4XSLT e-mail: support@4suite.com
Copyright (c) 1999-2000 Fourthought Inc, USA. All Rights Reserved.
See http://4suite.com/COPYRIGHT for license and copyright information
"""
from xml.dom import EMPTY_NAMESPACE
import xml.dom.ext
import xml.dom.Element
import xml.xslt
from xml.xslt import XsltElement, XsltException, Error
from xml.xpath import CoreFunctions, Util
from xml.xpath import XPathParser
class VariableElement(XsltElement):
legalAttrs = ('name', 'select')
def __init__(self, doc, uri=xml.xslt.XSL_NAMESPACE, localName='variable', prefix='xsl', baseUri=''):
XsltElement.__init__(self, doc, uri, localName, prefix, baseUri)
return
def setup(self):
self._nss = xml.dom.ext.GetAllNs(self)
name_attr = self.getAttributeNS(EMPTY_NAMESPACE, 'name')
split_name = Util.ExpandQName(
name_attr,
namespaces=self._nss
)
self._name = split_name
self._select = self.getAttributeNS(EMPTY_NAMESPACE, 'select')
if self._select:
parser = XPathParser.XPathParser()
self._expr = parser.parseExpression(self._select)
else:
self._expr = None
return
def instantiate(self, context, processor):
#Note all we want to do is change the varBindings
origState = context.copy()
context.setNamespaces(self._nss)
text = ''
if self._select:
result = self._expr.evaluate(context)
else:
processor.pushResult()
for child in self.childNodes:
context = child.instantiate(context, processor)[0]
result = processor.popResult()
context.rtfs.append(result)
context.set(origState)
context.varBindings[self._name] = result
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._select, self._expr)
return new_state
def __setstate__(self, state):
XsltElement.__setstate__(self, state[0])
self._nss = state[1]
self._name = state[2]
self._select = state[3]
self._expr = state[4]
return
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