Primer commit del proyecto RSS
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venv/lib/python3.12/site-packages/feedparser/util.py
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venv/lib/python3.12/site-packages/feedparser/util.py
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# Copyright 2010-2023 Kurt McKee <contactme@kurtmckee.org>
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# Copyright 2002-2008 Mark Pilgrim
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# All rights reserved.
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#
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# This file is a part of feedparser.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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import warnings
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class FeedParserDict(dict):
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keymap = {
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'channel': 'feed',
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'items': 'entries',
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'guid': 'id',
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'date': 'updated',
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'date_parsed': 'updated_parsed',
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'description': ['summary', 'subtitle'],
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'description_detail': ['summary_detail', 'subtitle_detail'],
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'url': ['href'],
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'modified': 'updated',
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'modified_parsed': 'updated_parsed',
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'issued': 'published',
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'issued_parsed': 'published_parsed',
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'copyright': 'rights',
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'copyright_detail': 'rights_detail',
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'tagline': 'subtitle',
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'tagline_detail': 'subtitle_detail',
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}
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def __getitem__(self, key):
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"""
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:return: A :class:`FeedParserDict`.
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"""
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if key == 'category':
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try:
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return dict.__getitem__(self, 'tags')[0]['term']
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except IndexError:
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raise KeyError("object doesn't have key 'category'")
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elif key == 'enclosures':
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norel = lambda link: FeedParserDict([(name, value) for (name, value) in link.items() if name != 'rel'])
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return [
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norel(link)
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for link in dict.__getitem__(self, 'links')
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if link['rel'] == 'enclosure'
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]
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elif key == 'license':
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for link in dict.__getitem__(self, 'links'):
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if link['rel'] == 'license' and 'href' in link:
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return link['href']
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elif key == 'updated':
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# Temporarily help developers out by keeping the old
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# broken behavior that was reported in issue 310.
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# This fix was proposed in issue 328.
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if (
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not dict.__contains__(self, 'updated')
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and dict.__contains__(self, 'published')
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):
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warnings.warn(
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"To avoid breaking existing software while "
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"fixing issue 310, a temporary mapping has been created "
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"from `updated` to `published` if `updated` doesn't "
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"exist. This fallback will be removed in a future version "
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"of feedparser.",
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DeprecationWarning,
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)
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return dict.__getitem__(self, 'published')
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return dict.__getitem__(self, 'updated')
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elif key == 'updated_parsed':
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if (
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not dict.__contains__(self, 'updated_parsed')
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and dict.__contains__(self, 'published_parsed')
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):
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warnings.warn(
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"To avoid breaking existing software while "
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"fixing issue 310, a temporary mapping has been created "
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"from `updated_parsed` to `published_parsed` if "
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"`updated_parsed` doesn't exist. This fallback will be "
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"removed in a future version of feedparser.",
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DeprecationWarning,
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)
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return dict.__getitem__(self, 'published_parsed')
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return dict.__getitem__(self, 'updated_parsed')
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else:
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realkey = self.keymap.get(key, key)
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if isinstance(realkey, list):
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for k in realkey:
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if dict.__contains__(self, k):
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return dict.__getitem__(self, k)
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elif dict.__contains__(self, realkey):
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return dict.__getitem__(self, realkey)
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return dict.__getitem__(self, key)
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def __contains__(self, key):
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if key in ('updated', 'updated_parsed'):
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# Temporarily help developers out by keeping the old
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# broken behavior that was reported in issue 310.
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# This fix was proposed in issue 328.
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return dict.__contains__(self, key)
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try:
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self.__getitem__(key)
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except KeyError:
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return False
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else:
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return True
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has_key = __contains__
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def get(self, key, default=None):
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"""
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:return: A :class:`FeedParserDict`.
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"""
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try:
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return self.__getitem__(key)
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except KeyError:
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return default
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def __setitem__(self, key, value):
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key = self.keymap.get(key, key)
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if isinstance(key, list):
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key = key[0]
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return dict.__setitem__(self, key, value)
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def setdefault(self, k, default):
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if k not in self:
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self[k] = default
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return default
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return self[k]
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def __getattr__(self, key):
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# __getattribute__() is called first; this will be called
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# only if an attribute was not already found
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try:
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return self.__getitem__(key)
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except KeyError:
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raise AttributeError("object has no attribute '%s'" % key)
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def __hash__(self):
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# This is incorrect behavior -- dictionaries shouldn't be hashable.
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# Note to self: remove this behavior in the future.
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return id(self)
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