def test_sax_to_pulldom(self):
tree = self.parse('<a xmlns="blaA">ab<b:b xmlns:b="blaB">bb</b:b>ba</a>')
handler = pulldom.SAX2DOM()
sax.saxify(tree, handler)
dom = handler.document
self.assertEqual('a',
dom.firstChild.localName)
self.assertEqual('blaA',
dom.firstChild.namespaceURI)
children = dom.firstChild.childNodes
self.assertEqual('ab',
children[0].nodeValue)
self.assertEqual('blaB',
children[1].namespaceURI)
self.assertEqual('ba',
children[2].nodeValue)
python类SAX2DOM的实例源码
def parse_lxml_dom(tree):
handler = SAX2DOM()
lxml.sax.saxify(tree, handler)
return handler.document
def testSAX2DOM(self):
from xml.dom import pulldom
sax2dom = pulldom.SAX2DOM()
sax2dom.startDocument()
sax2dom.startElement("doc", {})
sax2dom.characters("text")
sax2dom.startElement("subelm", {})
sax2dom.characters("text")
sax2dom.endElement("subelm")
sax2dom.characters("text")
sax2dom.endElement("doc")
sax2dom.endDocument()
doc = sax2dom.document
root = doc.documentElement
(text1, elm1, text2) = root.childNodes
text3 = elm1.childNodes[0]
self.confirm(text1.previousSibling is None and
text1.nextSibling is elm1 and
elm1.previousSibling is text1 and
elm1.nextSibling is text2 and
text2.previousSibling is elm1 and
text2.nextSibling is None and
text3.previousSibling is None and
text3.nextSibling is None, "testSAX2DOM - siblings")
self.confirm(root.parentNode is doc and
text1.parentNode is root and
elm1.parentNode is root and
text2.parentNode is root and
text3.parentNode is elm1, "testSAX2DOM - parents")
doc.unlink()
def testSAX2DOM(self):
from xml.dom import pulldom
sax2dom = pulldom.SAX2DOM()
sax2dom.startDocument()
sax2dom.startElement("doc", {})
sax2dom.characters("text")
sax2dom.startElement("subelm", {})
sax2dom.characters("text")
sax2dom.endElement("subelm")
sax2dom.characters("text")
sax2dom.endElement("doc")
sax2dom.endDocument()
doc = sax2dom.document
root = doc.documentElement
(text1, elm1, text2) = root.childNodes
text3 = elm1.childNodes[0]
self.confirm(text1.previousSibling is None and
text1.nextSibling is elm1 and
elm1.previousSibling is text1 and
elm1.nextSibling is text2 and
text2.previousSibling is elm1 and
text2.nextSibling is None and
text3.previousSibling is None and
text3.nextSibling is None, "testSAX2DOM - siblings")
self.confirm(root.parentNode is doc and
text1.parentNode is root and
elm1.parentNode is root and
text2.parentNode is root and
text3.parentNode is elm1, "testSAX2DOM - parents")
doc.unlink()
def testSAX2DOM(self):
from xml.dom import pulldom
sax2dom = pulldom.SAX2DOM()
sax2dom.startDocument()
sax2dom.startElement("doc", {})
sax2dom.characters("text")
sax2dom.startElement("subelm", {})
sax2dom.characters("text")
sax2dom.endElement("subelm")
sax2dom.characters("text")
sax2dom.endElement("doc")
sax2dom.endDocument()
doc = sax2dom.document
root = doc.documentElement
(text1, elm1, text2) = root.childNodes
text3 = elm1.childNodes[0]
self.confirm(text1.previousSibling is None and
text1.nextSibling is elm1 and
elm1.previousSibling is text1 and
elm1.nextSibling is text2 and
text2.previousSibling is elm1 and
text2.nextSibling is None and
text3.previousSibling is None and
text3.nextSibling is None, "testSAX2DOM - siblings")
self.confirm(root.parentNode is doc and
text1.parentNode is root and
elm1.parentNode is root and
text2.parentNode is root and
text3.parentNode is elm1, "testSAX2DOM - parents")
doc.unlink()
def test_sax2dom_fail(self):
"""SAX2DOM can"t handle a PI before the root element."""
pd = SAX2DOMTestHelper(None, SAXExerciser(), 12)
self._test_thorough(pd)
def test_thorough_sax2dom(self):
"""Test some of the hard-to-reach parts of SAX2DOM."""
pd = SAX2DOMTestHelper(None, SAX2DOMExerciser(), 12)
self._test_thorough(pd, False)
def reset(self):
self.pulldom = pulldom.SAX2DOM()
# This content handler relies on namespace support
self.parser.setFeature(xml.sax.handler.feature_namespaces, 1)
self.parser.setContentHandler(self.pulldom)
def test_basic(self):
"""Ensure SAX2DOM can parse from a stream."""
with io.StringIO(SMALL_SAMPLE) as fin:
sd = SAX2DOMTestHelper(fin, xml.sax.make_parser(),
len(SMALL_SAMPLE))
for evt, node in sd:
if evt == pulldom.START_ELEMENT and node.tagName == "html":
break
# Because the buffer is the same length as the XML, all the
# nodes should have been parsed and added:
self.assertGreater(len(node.childNodes), 0)
def testSAX2DOM(self):
"""Ensure SAX2DOM expands nodes as expected."""
sax2dom = pulldom.SAX2DOM()
sax2dom.startDocument()
sax2dom.startElement("doc", {})
sax2dom.characters("text")
sax2dom.startElement("subelm", {})
sax2dom.characters("text")
sax2dom.endElement("subelm")
sax2dom.characters("text")
sax2dom.endElement("doc")
sax2dom.endDocument()
doc = sax2dom.document
root = doc.documentElement
(text1, elm1, text2) = root.childNodes
text3 = elm1.childNodes[0]
self.assertIsNone(text1.previousSibling)
self.assertIs(text1.nextSibling, elm1)
self.assertIs(elm1.previousSibling, text1)
self.assertIs(elm1.nextSibling, text2)
self.assertIs(text2.previousSibling, elm1)
self.assertIsNone(text2.nextSibling)
self.assertIsNone(text3.previousSibling)
self.assertIsNone(text3.nextSibling)
self.assertIs(root.parentNode, doc)
self.assertIs(text1.parentNode, root)
self.assertIs(elm1.parentNode, root)
self.assertIs(text2.parentNode, root)
self.assertIs(text3.parentNode, elm1)
doc.unlink()
def testSAX2DOM(self):
from xml.dom import pulldom
sax2dom = pulldom.SAX2DOM()
sax2dom.startDocument()
sax2dom.startElement("doc", {})
sax2dom.characters("text")
sax2dom.startElement("subelm", {})
sax2dom.characters("text")
sax2dom.endElement("subelm")
sax2dom.characters("text")
sax2dom.endElement("doc")
sax2dom.endDocument()
doc = sax2dom.document
root = doc.documentElement
(text1, elm1, text2) = root.childNodes
text3 = elm1.childNodes[0]
self.confirm(text1.previousSibling is None and
text1.nextSibling is elm1 and
elm1.previousSibling is text1 and
elm1.nextSibling is text2 and
text2.previousSibling is elm1 and
text2.nextSibling is None and
text3.previousSibling is None and
text3.nextSibling is None, "testSAX2DOM - siblings")
self.confirm(root.parentNode is doc and
text1.parentNode is root and
elm1.parentNode is root and
text2.parentNode is root and
text3.parentNode is elm1, "testSAX2DOM - parents")
doc.unlink()
def test_sax2dom_fail(self):
"""SAX2DOM can"t handle a PI before the root element."""
pd = SAX2DOMTestHelper(None, SAXExerciser(), 12)
self._test_thorough(pd)
def test_thorough_sax2dom(self):
"""Test some of the hard-to-reach parts of SAX2DOM."""
pd = SAX2DOMTestHelper(None, SAX2DOMExerciser(), 12)
self._test_thorough(pd, False)
def reset(self):
self.pulldom = pulldom.SAX2DOM()
# This content handler relies on namespace support
self.parser.setFeature(xml.sax.handler.feature_namespaces, 1)
self.parser.setContentHandler(self.pulldom)
def test_basic(self):
"""Ensure SAX2DOM can parse from a stream."""
with io.StringIO(SMALL_SAMPLE) as fin:
sd = SAX2DOMTestHelper(fin, xml.sax.make_parser(),
len(SMALL_SAMPLE))
for evt, node in sd:
if evt == pulldom.START_ELEMENT and node.tagName == "html":
break
# Because the buffer is the same length as the XML, all the
# nodes should have been parsed and added:
self.assertGreater(len(node.childNodes), 0)
def testSAX2DOM(self):
"""Ensure SAX2DOM expands nodes as expected."""
sax2dom = pulldom.SAX2DOM()
sax2dom.startDocument()
sax2dom.startElement("doc", {})
sax2dom.characters("text")
sax2dom.startElement("subelm", {})
sax2dom.characters("text")
sax2dom.endElement("subelm")
sax2dom.characters("text")
sax2dom.endElement("doc")
sax2dom.endDocument()
doc = sax2dom.document
root = doc.documentElement
(text1, elm1, text2) = root.childNodes
text3 = elm1.childNodes[0]
self.assertIsNone(text1.previousSibling)
self.assertIs(text1.nextSibling, elm1)
self.assertIs(elm1.previousSibling, text1)
self.assertIs(elm1.nextSibling, text2)
self.assertIs(text2.previousSibling, elm1)
self.assertIsNone(text2.nextSibling)
self.assertIsNone(text3.previousSibling)
self.assertIsNone(text3.nextSibling)
self.assertIs(root.parentNode, doc)
self.assertIs(text1.parentNode, root)
self.assertIs(elm1.parentNode, root)
self.assertIs(text2.parentNode, root)
self.assertIs(text3.parentNode, elm1)
doc.unlink()
def testSAX2DOM(self):
from xml.dom import pulldom
sax2dom = pulldom.SAX2DOM()
sax2dom.startDocument()
sax2dom.startElement("doc", {})
sax2dom.characters("text")
sax2dom.startElement("subelm", {})
sax2dom.characters("text")
sax2dom.endElement("subelm")
sax2dom.characters("text")
sax2dom.endElement("doc")
sax2dom.endDocument()
doc = sax2dom.document
root = doc.documentElement
(text1, elm1, text2) = root.childNodes
text3 = elm1.childNodes[0]
self.confirm(text1.previousSibling is None and
text1.nextSibling is elm1 and
elm1.previousSibling is text1 and
elm1.nextSibling is text2 and
text2.previousSibling is elm1 and
text2.nextSibling is None and
text3.previousSibling is None and
text3.nextSibling is None, "testSAX2DOM - siblings")
self.confirm(root.parentNode is doc and
text1.parentNode is root and
elm1.parentNode is root and
text2.parentNode is root and
text3.parentNode is elm1, "testSAX2DOM - parents")
doc.unlink()
def test_sax2dom_fail(self):
"""SAX2DOM can"t handle a PI before the root element."""
pd = SAX2DOMTestHelper(None, SAXExerciser(), 12)
self._test_thorough(pd)
def test_thorough_sax2dom(self):
"""Test some of the hard-to-reach parts of SAX2DOM."""
pd = SAX2DOMTestHelper(None, SAX2DOMExerciser(), 12)
self._test_thorough(pd, False)
def reset(self):
self.pulldom = pulldom.SAX2DOM()
# This content handler relies on namespace support
self.parser.setFeature(xml.sax.handler.feature_namespaces, 1)
self.parser.setContentHandler(self.pulldom)
def test_basic(self):
"""Ensure SAX2DOM can parse from a stream."""
with io.StringIO(SMALL_SAMPLE) as fin:
sd = SAX2DOMTestHelper(fin, xml.sax.make_parser(),
len(SMALL_SAMPLE))
for evt, node in sd:
if evt == pulldom.START_ELEMENT and node.tagName == "html":
break
# Because the buffer is the same length as the XML, all the
# nodes should have been parsed and added:
self.assertGreater(len(node.childNodes), 0)
def testSAX2DOM(self):
"""Ensure SAX2DOM expands nodes as expected."""
sax2dom = pulldom.SAX2DOM()
sax2dom.startDocument()
sax2dom.startElement("doc", {})
sax2dom.characters("text")
sax2dom.startElement("subelm", {})
sax2dom.characters("text")
sax2dom.endElement("subelm")
sax2dom.characters("text")
sax2dom.endElement("doc")
sax2dom.endDocument()
doc = sax2dom.document
root = doc.documentElement
(text1, elm1, text2) = root.childNodes
text3 = elm1.childNodes[0]
self.assertIsNone(text1.previousSibling)
self.assertIs(text1.nextSibling, elm1)
self.assertIs(elm1.previousSibling, text1)
self.assertIs(elm1.nextSibling, text2)
self.assertIs(text2.previousSibling, elm1)
self.assertIsNone(text2.nextSibling)
self.assertIsNone(text3.previousSibling)
self.assertIsNone(text3.nextSibling)
self.assertIs(root.parentNode, doc)
self.assertIs(text1.parentNode, root)
self.assertIs(elm1.parentNode, root)
self.assertIs(text2.parentNode, root)
self.assertIs(text3.parentNode, elm1)
doc.unlink()
