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########################################################################
#
# File Name: CopyOfElement.py
#
#
"""
Implementation of the XSLT Spec copy-of 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
from xml.dom import Node
import xml.xslt
from xml.xslt import XsltElement, XsltException, Error
from xml.xslt import g_xsltRecognizedNodes
from xml.xpath import XPathParser, Conversions
from xml.dom import XMLNS_NAMESPACE
class CopyOfElement(XsltElement):
legalAttrs = ('select',)
def __init__(self, doc, uri=xml.xslt.XSL_NAMESPACE, localName='copy-of',
prefix='xsl', baseUri=''):
XsltElement.__init__(self, doc, uri, localName, prefix, baseUri)
return
def setup(self):
parser = XPathParser.XPathParser()
self.__dict__['_select'] = self.getAttributeNS(EMPTY_NAMESPACE, 'select')
if not self._select:
raise XsltException(Error.COPYOF_MISSING_SELECT)
self.__dict__['_expr'] = parser.parseExpression(self._select)
self.__dict__['_nss'] = xml.dom.ext.GetAllNs(self)
return
def instantiate(self, context, processor):
origState = context.copy()
context.setNamespaces(self._nss)
expResult = self._expr.evaluate(context)
if hasattr(expResult, "nodeType") and expResult.nodeType in g_xsltRecognizedNodes:
expResult = [expResult]
if type(expResult) == type([]) :
for child in expResult:
self.__copyNode(processor, child)
else:
st = Conversions.StringValue(expResult)
processor.writers[-1].text(st)
context.set(origState)
return (context,)
def __copyNode(self, processor, node):
if node.nodeType == Node.DOCUMENT_NODE:
for child in node.childNodes:
self.__copyNode(processor, child)
if node.nodeType == Node.DOCUMENT_FRAGMENT_NODE:
for child in node.childNodes:
self.__copyNode(processor, child)
if node.nodeType == Node.TEXT_NODE:
processor.writers[-1].text(node.data)
elif node.nodeType == Node.ELEMENT_NODE:
#FIXME: check if its a root element, and copy its children only, as the spec requires
processor.writers[-1].startElement(node.nodeName,node.namespaceURI)
for k in node.attributes.keys():
if k[0] != XMLNS_NAMESPACE:
self.__copyNode(processor, node.attributes[k])
for child in node.childNodes:
self.__copyNode(processor, child)
processor.writers[-1].endElement(node.nodeName)
elif node.nodeType == Node.ATTRIBUTE_NODE:
if node.namespaceURI != XMLNS_NAMESPACE:
processor.writers[-1].attribute(node.name, node.value, node.namespaceURI)
elif node.nodeType == Node.COMMENT_NODE:
processor.writers[-1].comment(node.data)
elif node.nodeType == Node.PROCESSING_INSTRUCTION_NODE:
processor.writers[-1].processingInstruction(node.target, node.data)
else:
pass
return
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._select, self._expr)
return new_state
def __setstate__(self, state):
XsltElement.__setstate__(self, state[0])
self._nss = state[1]
self._select = state[2]
self._expr = state[3]
return
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