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135 lines
4.6 KiB
Python
135 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, file):
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data = json.load(file)
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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(
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e["content_html"], self.encoding, "application/json"
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)
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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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