def convert_file(fname):
out_fname = fname.replace('.mht', '.txt')
with open(fname, "rb") as f:
e = email.message_from_binary_file(f)
htmlText = ""
for part in e.walk():
if part.get_content_type() == "text/html":
htmlText = part.get_payload()
break
if not htmlText:
print("Could not find HTML text in {}".format(fname))
sys.exit(2)
b = quopri.decodestring(htmlText.encode('utf-8'))
content = b.decode('utf-8')
doc = html5parser.document_fromstring(content)
body = doc[1]
rootdiv = body[-1]
with open(out_fname, "w") as out_f:
for p in rootdiv:
text = text_of(p)
if re.match(r'\s', text) or is_indented(p):
out_f.write("\t{}\n".format(text.strip()))
else:
out_f.write("{}\n".format(text.strip()))
def html_document_fromstring(s):
"""Parse html tree from string. Return None if the string can't be parsed.
"""
try:
return html5parser.document_fromstring(s, parser=_html5lib_parser())
except Exception:
pass
def html_document_fromstring(s):
"""Parse html tree from string. Return None if the string can't be parsed.
"""
if isinstance(s, six.text_type):
s = s.encode('utf8')
try:
#if html_too_big(s):
# return None
return html5parser.document_fromstring(s, parser=_html5lib_parser())
except Exception:
pass
def html_document_fromstring(s):
"""Parse html tree from string. Return None if the string can't be parsed.
"""
if isinstance(s, six.text_type):
s = s.encode('utf8')
try:
if html_too_big(s):
return None
return html5parser.document_fromstring(s, parser=_html5lib_parser())
except Exception:
pass
def process_response(self, request, response):
"""
This method is called only if ``appcache_analyze`` parameter is attached
to the querystring, to avoid overhead during normal navigation
"""
if (response['Content-Type'].find("text/html")>-1 and
request.GET.get("appcache_analyze", False)):
lxdoc = document_fromstring(response.content)
self.walk_tree(lxdoc)
response.appcache = {'cached': self._cached,
'fallback': self._fallback,
'network': self._network}
return response
def find_iter(skeleton, document):
"""
Return an iterator that yields elements from the document that
match given skeleton.
See `find_all` for details.
"""
if is_string(document):
document = html5parser.document_fromstring(document)
if is_string(skeleton):
skeleton = html5parser.fragment_fromstring(skeleton)
for element in document.iterdescendants():
if node_matches_bone(element, skeleton):
yield element
def test_index_shows_all_tutorials(self):
'''The Tutorial index should show all tutorials'''
expected = ["A-{}".format(uuid.uuid4()),
"B-{}".format(uuid.uuid4()),
]
for e in expected:
models.Tutorial.objects.create(title=e, fpid=e)
resp = self.client.get(reverse('index'))
html5 = html5parser.document_fromstring(resp.content)
nodes = document_fromstring(etree.tostring(html5))
titles = [n.text for n in nodes.cssselect('.t-tutorial-title')]
self.assertEqual(expected, titles)
def html_document_fromstring(s):
"""Parse html tree from string. Return None if the string can't be parsed.
"""
# html5lib doesn't allow us to pass encodings to the parser because reasons, so it defaults wo Windows-1252
# The decoding afterwards is done in UTF-8, and while this works fine for english alphabet characters,
# other characters are mis-decoded
# We encode the string to unicode so that it goes through the unicode flow and all is well in the world
s = unicode(s)
try:
if html_too_big(s):
return None
return html5parser.document_fromstring(s, parser=_html5lib_parser())
except Exception:
pass
def get_html5_parsed_text(text):
"""Return content using the html5parser, ideal for faulty html.
This dance is slightly different than usual because it uses the
html5parser to first create an _Element object, then serialize it using
`tostring`, then parse *that* using the usual fromstring function. The
end result is that irregularities in the html are fixed by the
html5parser, and the usual lxml parser gives us the same API we are
used to.
:param text: The html of the document
:return: an lxml.HtmlElement object
"""
parsed = html5parser.document_fromstring(text.encode('utf-8'))
return fromstring(tostring(parsed, encoding='unicode'))
def process_response(self, request, response):
"""
This method is called only if ``appcache_analyze`` parameter is attached
to the querystring, to avoid overhead during normal navigation
"""
if (response['Content-Type'].find("text/html") > -1
and request.GET.get("appcache_analyze", False)):
lxdoc = document_fromstring(response.content)
self.walk_tree(lxdoc)
response.appcache = {
'cached': self._cached,
'fallback': self._fallback,
'network': self._network
}
return response
def get_html5_parsed_text(text):
"""Return content using the html5parser, ideal for faulty html.
This dance is slightly different than usual because it uses the
html5parser to first create an _Element object, then serialize it using
`tostring`, then parse *that* using the usual fromstring function. The
end result is that irregularities in the html are fixed by the
html5parser, and the usual lxml parser gives us the same API we are
used to.
:param text: The html of the document
:return: an lxml.HtmlElement object
"""
parsed = html5parser.document_fromstring(text.encode("utf-8"))
return fromstring(tostring(parsed, encoding="unicode"))
def test_index_shows_all_tutorials(self):
'''The Tutorial index should show all tutorials'''
expected = [
"A-{}".format(uuid.uuid4()),
"B-{}".format(uuid.uuid4()),
]
for e in expected:
models.Tutorial.objects.create(title=e, fpid=e)
resp = self.client.get(reverse('index'))
html5 = html5parser.document_fromstring(resp.content)
nodes = document_fromstring(etree.tostring(html5))
titles = [n.text for n in nodes.cssselect('.t-tutorial-title')]
self.assertEqual(expected, titles)
def _make_html_tree(self, text):
""" Grab the content using the html5parser.
This dance is slightly different than usual because it uses the
html5parser to first create an _Element object, then serialize it using
`tostring`, then parse *that* using the usual fromstring function. The
end result is that irregularities in the html are fixed by the
html5parser, and the usual lxml parser gives us the same API we are
used to.
:param text: The html of the document
:return: an lxml.HtmlElement object
"""
e = html5parser.document_fromstring(text)
html_tree = fromstring(tostring(e))
return html_tree
def _make_html_tree(self, text):
""" Grab the content using the html5parser.
This dance is slightly different than usual because it uses the
html5parser to first create an _Element object, then serialize it using
`tostring`, then parse *that* using the usual fromstring function. The
end result is that irregularities in the html are fixed by the
html5parser, and the usual lxml parser gives us the same API we are
used to.
:param text: The html of the document
:return: an lxml.HtmlElement object
"""
e = html5parser.document_fromstring(text)
html_tree = fromstring(tostring(e))
return html_tree
def crawl(self):
tocrawl = self.urls
self.visited = set()
while not len(tocrawl) == 0:
toadd = set()
for url in tocrawl:
self.visited.add(url)
resp, content = http.request(url, 'GET')
if resp['status'] == '404' or 'text/html' not in resp['content-type']:
continue
self.page_handler(resp, content)
h = html5.document_fromstring(content, guess_charset=False)
for link in links.links(h, url=url):
if self.isurlvalid(link.dest):
toadd.add(link.dest[:link.dest.rindex('#')] if '#' in link.dest else link.dest)
self.link_handler(link)
for url in toadd: self.urls.add(url)
tocrawl = (self.urls ^ self.visited)
def build_doc(page):
"""解析HTML
@para page: 爬取的页面
@return <class 'lxml.html.HtmlElement'> 类型对象
"""
# Requires that the `page` not be None
if page is None:
LOG.error("Page content is None, can't build_doc")
return ''
html5doc = html5parser.document_fromstring(decode_html(page))
doc = fragment_fromstring(tostring(html5doc))
# doc = document_fromstring(decode_html(page))
output = open('parse.txt', 'w')
print(tostring(doc), file=output)
# try:
# tostring(doc, encoding='unicode')
# except UnicodeDecodeError:
# """Using soupparser as a fallback
# """
# print("Using soupparser as a fallback")
# doc = soupparser.fromstring(decode_html(page))
return doc
def extract_ner(response_content, response_url, base_url):
url = response_url
tree = html5parser.document_fromstring(response_content)
tree = remove_namespace(tree)
tree = absolute_links(tree, url)
tree = parent_links(tree, base_url)
title = tree.xpath('//title')[0].text
model = joblib.load(webstruct_demo.config['MODEL_PATH'])
tree, tokens, tags = run_model(tree, model)
tree = model.html_tokenizer.detokenize_single(tokens, tags)
tree = webstruct.webannotator.to_webannotator(
tree, entity_colors=model.entity_colors, url=url)
content = lxml.html.tostring(tree, encoding='utf-8').decode('utf-8')
entities = webstruct.sequence_encoding.IobEncoder.group(zip(tokens, tags))
entities = webstruct.model._drop_empty((model.build_entity(tokens), tag)
for (tokens, tag) in entities
if tag != 'O')
groups = webstruct.model.extract_entitiy_groups(
tokens, tags, dont_penalize=None, join_tokens=model.build_entity)
return content, title, entities, groups
def build_doc(page):
"""解析HTML
@para page: 爬取的页面
@return <class 'lxml.html.HtmlElement'> 类型对象
"""
# Requires that the `page` not be None
if page is None:
LOG.error("Page content is None, can't build_doc")
return ''
if not isinstance(page, (str, bytes)):
page = str(page)
html5doc = html5parser.document_fromstring(decode_html(page))
doc = fragment_fromstring(tostring(html5doc))
# doc = document_fromstring(decode_html(page))
output = open('parse.txt', 'w')
print(tostring(doc), file=output)
# try:
# tostring(doc, encoding='unicode')
# except UnicodeDecodeError:
# """Using soupparser as a fallback
# """
# print("Using soupparser as a fallback")
# doc = soupparser.fromstring(decode_html(page))
return doc
#!/usr/bin/python import lxml.html, lxml.html.clean from lxml.html import html5parser html = """<html><body> <!-- a comment --> </body></html> """ #tree = lxml.html.document_fromstring(html) tree = html5parser.document_fromstring(html) cleaner = lxml.html.clean.Cleaner() cleaner(tree)
</body></html>
"""
html ="""
<html><body>
<!-- a comment -->
</body></html>
"""
import lxml, lxml.html, lxml.html.clean
from lxml.html import html5parser
tree = lxml.html.document_fromstring(html)
tree = html5parser.document_fromstring(html)
cleaner = lxml.html.clean.Cleaner(scripts=True,
javascript=True,
comments=False,
style=True,
links=True,
meta=True,
page_structure=False,
processing_instructions=True,
embedded=True,
frames=True,
forms=True,
annoying_tags=True,
#allow_tags=OK_TAGS,
remove_unknown_tags=True,
def _make_html_tree(self, text):
e = html5parser.document_fromstring(text)
html_tree = fromstring(tostring(e))
return html_tree
def _make_html_tree(self, text):
e = html5parser.document_fromstring(text)
html_tree = fromstring(tostring(e))
return html_tree
from lxml.html import fragment_fromstring
from lxml.html import tostring
html = """
<html>
<head>
</head>
<body>
Text
<h1>Title</h1>
Tail1
<div>p1<p>inner text</p></div>
<p>p2</p>
Tail2
</body>
"""
html5doc = html5parser.document_fromstring(html, guess_charset=False)
root = fragment_fromstring(tostring(html5doc))
for elem in root.findall(".//body"):
# 1. 为Text包装<p>, 即将Text变成<p>Text</p>
if elem.text and elem.text.strip():
p = fragment_fromstring('<p/>')
p.text = elem.text
elem.text = None
elem.insert(0, p)
# 2. 为body的子元素包装div
div = fragment_fromstring("<div/>")
for e in elem.iterchildren():
print(e, e.text)
div.append(e)
print(tostring(div))
elem.insert(0, div)
def call_it(self, *args, **kwargs):
from lxml.html.html5parser import document_fromstring
return document_fromstring(*args, **kwargs)
def call_it(self, *args, **kwargs):
from lxml.html.html5parser import document_fromstring
return document_fromstring(*args, **kwargs)
