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133 lines
4.6 KiB
Python
133 lines
4.6 KiB
Python
# The JSON feed parser
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# Copyright 2017 Beat Bolli
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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 modification,
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# 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 json
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from ..datetimes import _parse_date
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from ..sanitizer import sanitize_html
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from ..util import FeedParserDict
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class JSONParser:
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VERSIONS = {
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'https://jsonfeed.org/version/1': 'json1',
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'https://jsonfeed.org/version/1.1': 'json11',
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}
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FEED_FIELDS = (
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('title', 'title'),
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('icon', 'image'),
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('home_page_url', 'link'),
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('description', 'description'),
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)
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ITEM_FIELDS = (
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('title', 'title'),
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('id', 'guid'),
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('url', 'link'),
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('summary', 'summary'),
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('external_url', 'source'),
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)
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def __init__(self, baseuri=None, baselang=None, encoding=None):
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self.baseuri = baseuri or ''
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self.lang = baselang or None
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self.encoding = encoding or 'utf-8' # character encoding
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self.version = None
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self.feeddata = FeedParserDict()
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self.namespacesInUse = []
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self.entries = []
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def feed(self, data):
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data = json.loads(data)
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v = data.get('version', '')
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try:
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self.version = self.VERSIONS[v]
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except KeyError:
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raise ValueError("Unrecognized JSONFeed version '%s'" % v)
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for src, dst in self.FEED_FIELDS:
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if src in data:
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self.feeddata[dst] = data[src]
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if 'author' in data:
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self.parse_author(data['author'], self.feeddata)
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# TODO: hubs; expired has no RSS equivalent
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self.entries = [self.parse_entry(e) for e in data['items']]
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def parse_entry(self, e):
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entry = FeedParserDict()
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for src, dst in self.ITEM_FIELDS:
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if src in e:
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entry[dst] = e[src]
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if 'content_text' in e:
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entry['content'] = c = FeedParserDict()
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c['value'] = e['content_text']
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c['type'] = 'text'
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elif 'content_html' in e:
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entry['content'] = c = FeedParserDict()
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c['value'] = sanitize_html(e['content_html'], self.encoding, 'application/json')
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c['type'] = 'html'
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if 'date_published' in e:
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entry['published'] = e['date_published']
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entry['published_parsed'] = _parse_date(e['date_published'])
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if 'date_updated' in e:
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entry['updated'] = e['date_modified']
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entry['updated_parsed'] = _parse_date(e['date_modified'])
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if 'tags' in e:
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entry['category'] = e['tags']
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if 'author' in e:
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self.parse_author(e['author'], entry)
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if 'attachments' in e:
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entry['enclosures'] = [self.parse_attachment(a) for a in e['attachments']]
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return entry
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@staticmethod
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def parse_author(parent, dest):
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dest['author_detail'] = detail = FeedParserDict()
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if 'name' in parent:
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dest['author'] = detail['name'] = parent['name']
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if 'url' in parent:
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if parent['url'].startswith('mailto:'):
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detail['email'] = parent['url'][7:]
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else:
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detail['href'] = parent['url']
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@staticmethod
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def parse_attachment(attachment):
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enc = FeedParserDict()
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enc['href'] = attachment['url']
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enc['type'] = attachment['mime_type']
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if 'size_in_bytes' in attachment:
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enc['length'] = attachment['size_in_bytes']
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return enc
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