+ def getchildren(self, node):
+ return node.childNodes
+
+ def istag(self, node):
+ return bool(node.localName)
+
+
+if use_elementtree:
+ class ElementTreeXmlVfs(XmlVfs):
+ def parse(self):
+ # Copied from http://effbot.org/zone/element-pi.ht
+
+ class PIParser(ET.XMLTreeBuilder):
+
+ def __init__(self):
+ ET.XMLTreeBuilder.__init__(self)
+ # assumes ElementTree 1.2.X
+ self._parser.CommentHandler = self.handle_comment
+ self._parser.ProcessingInstructionHandler = self.handle_pi
+ self._target.start("document", {})
+
+ def close(self):
+ self._target.end("document")
+ return ET.XMLTreeBuilder.close(self)
+
+ def handle_comment(self, data):
+ self._target.start(ET.Comment, {})
+ self._target.data(data)
+ self._target.end(ET.Comment)
+
+ def handle_pi(self, target, data):
+ self._target.start(ET.PI, {})
+ self._target.data(target + " " + data)
+ self._target.end(ET.PI)
+
+ self.document = ET.parse(sys.argv[2], PIParser())
+
+ def hasattrs(self, node):
+ return bool(node.attrib)
+
+ def attrs2text(self, node):
+ attr_accumulator = []
+ for name, value in node.attrib.items():
+ name = name.encode(default_encoding, "replace")
+ value = value.encode(default_encoding, "replace")
+ if name.startswith('{'):
+ name = name.split('}', 1)[1] # Remove XML namespace
+ attr_accumulator.append("%s=%s" % (name, value))
+ return '\n'.join(attr_accumulator)
+
+ def collect_text(self, node):
+ text_accumulator = []
+ if node.text:
+ text = node.text.strip()
+ if text: text_accumulator.append(text)
+ for element in node:
+ if element.tag is ET.Comment:
+ text = u"<!--%s-->" % text
+ text_accumulator.append(text)
+ if node.tail:
+ text = node.tail.strip()
+ if text: text_accumulator.append(text)
+ return '\n'.join(text_accumulator).encode(default_encoding, "replace")
+
+ def _list(self, node, path=''):
+ n = len(node)
+ if n:
+ width = int(math.log10(n))+1
+ template = "%%0%dd" % width
+ else:
+ template = "%d"
+ n = 0
+ for element in node:
+ if not isinstance(element.tag, basestring):
+ continue