mirror of
https://github.com/Mikaela/Limnoria.git
synced 2024-11-15 15:09:23 +01:00
63eb6672ea
This commit revertsdb7ef3f025(though it keeps the year updates) After discussion with several people, it seems better to mention copyright owners explicitly. eg. https://reuse.software/faq/#vcs-copyright explains the issue of using VCSs to track copyright. Asdb7ef3f025only replaced mentions of my name with 'The Limnoria Contributors', this commit only needs to undo that + add one person who contributed to setup.py.
126 lines
4.4 KiB
Python
126 lines
4.4 KiB
Python
###
|
|
# Copyright (c) 2020-2021, Valentin Lorentz
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are met:
|
|
#
|
|
# * Redistributions of source code must retain the above copyright notice,
|
|
# this list of conditions, and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above copyright notice,
|
|
# this list of conditions, and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
# * Neither the name of the author of this software nor the name of
|
|
# contributors to this software may be used to endorse or promote products
|
|
# derived from this software without specific prior written consent.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
# POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
###
|
|
|
|
import enum
|
|
import collections
|
|
from html.parser import HTMLParser
|
|
|
|
import supybot.utils as utils
|
|
|
|
result = collections.namedtuple('result', 'link title snippet')
|
|
|
|
@enum.unique
|
|
class ParserState(enum.Enum):
|
|
OUTSIDE = 0
|
|
IN_LINK = 1
|
|
IN_TITLE = 2
|
|
TITLE_PARSED = 3
|
|
BREADCRUMBS_PARSED = 5
|
|
LINK_PARSED = 6
|
|
|
|
@enum.unique
|
|
class DomMark(enum.Enum):
|
|
"""A mark on an element in the stack, to know when to change state when
|
|
poping the element from the stack."""
|
|
HEADING = 1
|
|
BREADCRUMBS = 2
|
|
|
|
STACKED_TAGS = ('div', 'span', 'a')
|
|
|
|
class GoogleHTMLParser(HTMLParser):
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.stack = []
|
|
self.results = []
|
|
|
|
self.reset_current_result()
|
|
|
|
def reset_current_result(self):
|
|
self.state = ParserState.OUTSIDE
|
|
self.current_link = None
|
|
self.current_title = None
|
|
self.current_snippet = None
|
|
|
|
def handle_starttag(self, tag, attrs):
|
|
attrs = dict(attrs)
|
|
classes = attrs.get('class', '').split()
|
|
|
|
if tag in STACKED_TAGS:
|
|
self.stack.append(tag)
|
|
|
|
if tag == 'a' and attrs['href'].startswith('/url?q=') \
|
|
and self.state == ParserState.OUTSIDE:
|
|
self.state = ParserState.IN_LINK
|
|
href = attrs['href'][len('/url?q='):]
|
|
self.current_link = utils.web.urlunquote(href.split('&sa')[0])
|
|
|
|
elif tag == 'h3' and 'a' in self.stack and self.state == ParserState.IN_LINK:
|
|
self.state = ParserState.IN_TITLE
|
|
mark = DomMark.HEADING
|
|
|
|
def handle_endtag(self, tag):
|
|
if tag in STACKED_TAGS:
|
|
item = self.stack.pop()
|
|
assert item == tag, (item, tag)
|
|
|
|
if tag == 'a' and self.state in (
|
|
ParserState.IN_LINK, ParserState.IN_TITLE, ParserState.BREADCRUMBS_PARSED):
|
|
if self.current_title is None:
|
|
# That wasn't a result
|
|
self.state = ParserState.OUTSIDE
|
|
else:
|
|
self.state = ParserState.LINK_PARSED
|
|
|
|
def handle_data(self, data):
|
|
if self.state == ParserState.IN_TITLE:
|
|
self.current_title = data
|
|
self.state = ParserState.TITLE_PARSED
|
|
elif self.state == ParserState.TITLE_PARSED:
|
|
self.state = ParserState.BREADCRUMBS_PARSED
|
|
elif self.state == ParserState.LINK_PARSED:
|
|
self.current_snippet = data
|
|
self.state = ParserState.OUTSIDE
|
|
self.build_result()
|
|
|
|
def build_result(self):
|
|
self.results.append(result(
|
|
link=self.current_link,
|
|
title=self.current_title,
|
|
snippet=self.current_snippet,
|
|
))
|
|
self.reset_current_result()
|
|
|
|
if __name__ == '__main__':
|
|
parser = GoogleHTMLParser()
|
|
with open('google.html') as fd:
|
|
parser.feed(fd.read())
|
|
print(parser.results)
|
|
|