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Patch #103052: Restore non-cyclic operation of pulldom.PullDOM

This commit is contained in:
Martin v. Löwis 2001-01-26 18:53:42 +00:00
parent 2efc3238d7
commit 04a1a542cb
1 changed files with 38 additions and 49 deletions
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87
Lib/xml/dom/pulldom.py
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@ -24,9 +24,21 @@ class PullDOM(xml.sax.ContentHandler):
self.documentFactory = documentFactory
self.firstEvent = [None, None]
self.lastEvent = self.firstEvent
self.elementStack = []
self.push = self.elementStack.append
try:
self.pop = self.elementStack.pop
except AttributeError:
# use class' pop instead
pass
self._ns_contexts = [{}] # contains uri -> prefix dicts
self._current_context = self._ns_contexts[-1]
def pop(self):
result = self.elementStack[-1]
del self.elementStack[-1]
return result
def setDocumentLocator(self, locator):
self._locator = locator
@ -61,21 +73,13 @@ class PullDOM(xml.sax.ContentHandler):
attr.value = value
node.setAttributeNode(attr)
## print self.curNode, self.curNode.childNodes, node, node.parentNode
self.curNode.appendChild(node)
# node.parentNode = self.curNode
self.curNode = node
self.lastEvent[1] = [(START_ELEMENT, node), None]
self.lastEvent = self.lastEvent[1]
#self.events.append((START_ELEMENT, node))
self.push(node)
def endElementNS(self, name, tagName):
node = self.curNode
self.lastEvent[1] = [(END_ELEMENT, node), None]
self.lastEvent[1] = [(END_ELEMENT, self.pop()), None]
self.lastEvent = self.lastEvent[1]
#self.events.append((END_ELEMENT, node))
self.curNode = self.curNode.parentNode
def startElement(self, name, attrs):
node = self.document.createElement(name)
@ -85,54 +89,32 @@ class PullDOM(xml.sax.ContentHandler):
attr.value = value
node.setAttributeNode(attr)
#node.parentNode = self.curNode
self.curNode.appendChild(node)
self.curNode = node
self.lastEvent[1] = [(START_ELEMENT, node), None]
self.lastEvent = self.lastEvent[1]
#self.events.append((START_ELEMENT, node))
self.push(node)
def endElement(self, name):
node = self.curNode
self.lastEvent[1] = [(END_ELEMENT, node), None]
self.lastEvent[1] = [(END_ELEMENT, self.pop()), None]
self.lastEvent = self.lastEvent[1]
#self.events.append((END_ELEMENT, node))
self.curNode = node.parentNode
def comment(self, s):
node = self.document.createComment(s)
self.curNode.appendChild(node)
# parent = self.curNode
# node.parentNode = parent
self.lastEvent[1] = [(COMMENT, node), None]
self.lastEvent = self.lastEvent[1]
#self.events.append((COMMENT, node))
def processingInstruction(self, target, data):
node = self.document.createProcessingInstruction(target, data)
self.curNode.appendChild(node)
# parent = self.curNode
# node.parentNode = parent
self.lastEvent[1] = [(PROCESSING_INSTRUCTION, node), None]
self.lastEvent = self.lastEvent[1]
#self.events.append((PROCESSING_INSTRUCTION, node))
def ignorableWhitespace(self, chars):
node = self.document.createTextNode(chars)
self.curNode.appendChild(node)
# parent = self.curNode
# node.parentNode = parent
self.lastEvent[1] = [(IGNORABLE_WHITESPACE, node), None]
self.lastEvent = self.lastEvent[1]
#self.events.append((IGNORABLE_WHITESPACE, node))
def characters(self, chars):
node = self.document.createTextNode(chars)
self.curNode.appendChild(node)
# parent = self.curNode
# node.parentNode = parent
self.lastEvent[1] = [(CHARACTERS, node), None]
self.lastEvent = self.lastEvent[1]
@ -145,19 +127,14 @@ class PullDOM(xml.sax.ContentHandler):
import xml.dom.minidom
self.documentFactory = xml.dom.minidom.Document.implementation
node = self.documentFactory.createDocument(None, publicId, systemId)
self.curNode = self.document = node
self.document = node
self.lastEvent[1] = [(START_DOCUMENT, node), None]
self.lastEvent = self.lastEvent[1]
#self.events.append((START_DOCUMENT, node))
self.push(node)
def endDocument(self):
assert self.curNode.parentNode is None, \
"not all elements have been properly closed"
assert self.curNode.documentElement is not None, \
"document does not contain a root element"
node = self.curNode.documentElement
self.lastEvent[1] = [(END_DOCUMENT, node), None]
#self.events.append((END_DOCUMENT, self.curNode))
self.lastEvent[1] = [(END_DOCUMENT, self.document), None]
self.pop()
class ErrorHandler:
def warning(self, exception):
@ -188,12 +165,17 @@ class DOMEventStream:
def expandNode(self, node):
event = self.getEvent()
parents = [node]
while event:
token, cur_node = event
if cur_node is node:
return
if token != END_ELEMENT:
cur_node.parentNode.appendChild(cur_node)
parents[-1].appendChild(cur_node)
if token == START_ELEMENT:
parents.append(cur_node)
elif token == END_ELEMENT:
del parents[-1]
event = self.getEvent()
def getEvent(self):
@ -214,26 +196,33 @@ class SAX2DOM(PullDOM):
def startElementNS(self, name, tagName , attrs):
PullDOM.startElementNS(self, name, tagName, attrs)
self.curNode.parentNode.appendChild(self.curNode)
curNode = self.elementStack[-1]
parentNode = self.elementStack[-2]
parentNode.appendChild(curNode)
def startElement(self, name, attrs):
PullDOM.startElement(self, name, attrs)
self.curNode.parentNode.appendChild(self.curNode)
curNode = self.elementStack[-1]
parentNode = self.elementStack[-2]
parentNode.appendChild(curNode)
def processingInstruction(self, target, data):
PullDOM.processingInstruction(self, target, data)
node = self.lastEvent[0][1]
node.parentNode.appendChild(node)
parentNode = self.elementStack[-1]
parentNode.appendChild(node)
def ignorableWhitespace(self, chars):
PullDOM.ignorableWhitespace(self, chars)
node = self.lastEvent[0][1]
node.parentNode.appendChild(node)
parentNode = self.elementStack[-1]
parentNode.appendChild(node)
def characters(self, chars):
PullDOM.characters(self, chars)
node = self.lastEvent[0][1]
node.parentNode.appendChild(node)
parentNode = self.elementStack[-1]
parentNode.appendChild(node)
default_bufsize = (2 ** 14) - 20