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treebuilder.py
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treebuilder.py
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from xml.etree.ElementTree import TreeBuilder
from html.parser import HTMLParser
class HtmlParser(HTMLParser):
def __init__(self):
super().__init__()
self._builder = TreeBuilder()
self._open = list() # Stack of pending open tags
# Avoid error about multiple top-level elements
self._builder.start("", dict())
def close(self):
super().close()
return self._builder.close()
def handle_starttag(self, tag, attrs):
d = dict()
for [name, value] in attrs:
if value is None: # Empty HTML attribute, as in <input selected>
value = ''
d[name] = value
self._builder.start(tag, d)
self._open.append(tag)
def handle_endtag(self, tag):
for [i, open_tag] in enumerate(reversed(self._open)):
if open_tag == tag:
break
else:
return
for i in range(i + 1):
self._builder.end(self._open.pop())
def handle_data(self, *pos, **kw):
self._builder.data(*pos, **kw)