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3771dd9136
Markup is not being passed in pieces to the parser, so simplify the interface and reduce the state further.
74 lines
2.6 KiB
Python
74 lines
2.6 KiB
Python
# Copyright (C) 2000-2018 Petr Dlouhy
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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"""
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HTML parser implemented using Beautiful Soup and html.parser.
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"""
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from warnings import filterwarnings
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filterwarnings("ignore",
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message="The soupsieve package is not installed. CSS selectors cannot be used.",
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category=UserWarning, module="bs4")
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from bs4 import BeautifulSoup, Tag
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def make_soup(markup, from_encoding=None):
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return BeautifulSoup(markup, "html.parser", from_encoding=from_encoding,
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multi_valued_attributes=None)
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class Parser(object):
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handler = None
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encoding = None
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def __init__(self, handler):
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self.handler = handler
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self.reset()
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def feed_soup(self, soup):
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self.soup = soup
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def reset(self):
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self.soup = None
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def parse_contents(self, contents):
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for content in contents:
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if isinstance(content, Tag):
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tag_column = None if content.sourcepos is None \
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else content.sourcepos + 1
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if content.is_empty_element:
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self.handler.start_end_element(
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content.name, content.attrs, content.text.strip(),
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content.sourceline, tag_column
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)
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else:
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self.handler.start_element(
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content.name, content.attrs, content.text.strip(),
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content.sourceline, tag_column
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)
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if hasattr(content, 'contents'): # recursion
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self.parse_contents(content.contents)
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if hasattr(self.handler, 'end_element'):
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self.handler.end_element(content.name)
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def flush(self):
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if hasattr(self.soup, 'contents'):
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self.parse_contents(self.soup.contents)
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self.encoding = self.soup.original_encoding
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def parser(handler=None):
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return Parser(handler)
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