mirror of
https://github.com/Hopiu/linkchecker.git
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97 lines
3 KiB
Python
97 lines
3 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2000-2014 Bastian Kleineidam
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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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A blacklist logger.
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"""
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import os
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import codecs
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from . import _Logger
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class BlacklistLogger (_Logger):
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"""
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Updates a blacklist of wrong links. If a link on the blacklist
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is working (again), it is removed from the list. So after n days
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we have only links on the list which failed for n days.
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"""
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LoggerName = "blacklist"
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LoggerArgs = {
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"filename": "~/.linkchecker/blacklist",
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}
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def __init__ (self, **kwargs):
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"""Intialize with old blacklist data (if found, else not)."""
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args = self.get_args(kwargs)
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super(BlacklistLogger, self).__init__(**args)
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self.init_fileoutput(args)
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self.blacklist = {}
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if self.filename is not None and os.path.exists(self.filename):
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self.read_blacklist()
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def comment (self, s, **args):
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"""
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Write nothing.
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"""
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pass
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def log_url (self, url_data):
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"""
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Put invalid url in blacklist, delete valid url from blacklist.
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"""
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key = (url_data.parent_url, url_data.cache_url)
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key = repr(key)
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if key in self.blacklist:
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if url_data.valid:
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del self.blacklist[key]
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else:
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self.blacklist[key] += 1
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else:
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if not url_data.valid:
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self.blacklist[key] = 1
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def end_output (self, downloaded_bytes=None):
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"""
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Write blacklist file.
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"""
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self.write_blacklist()
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def read_blacklist (self):
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"""
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Read a previously stored blacklist from file fd.
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"""
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with codecs.open(self.filename, 'r', self.output_encoding,
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self.codec_errors) as fd:
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for line in fd:
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line = line.rstrip()
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if line.startswith('#') or not line:
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continue
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value, key = line.split(None, 1)
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self.blacklist[key] = int(value)
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def write_blacklist (self):
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"""
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Write the blacklist.
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"""
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oldmask = os.umask(0077)
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for key, value in self.blacklist.items():
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self.write(u"%d %s%s" % (value, repr(key), os.linesep))
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self.close_fileoutput()
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# restore umask
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os.umask(oldmask)
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