232 lines
8.3 KiB
Python
232 lines
8.3 KiB
Python
"""
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Everything related to parsing links from bookmark services.
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For a list of supported services, see the README.md.
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For examples of supported files see examples/.
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Parsed link schema: {
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'url': 'https://example.com/example/?abc=123&xyc=345#lmnop',
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'domain': 'example.com',
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'base_url': 'example.com/example/',
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'timestamp': '15442123124234',
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'tags': 'abc,def',
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'title': 'Example.com Page Title',
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'sources': ['ril_export.html', 'downloads/getpocket.com.txt'],
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}
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"""
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import re
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import json
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import xml.etree.ElementTree as etree
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from datetime import datetime
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from util import (
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domain,
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base_url,
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str_between,
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get_link_type,
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)
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def get_parsers(file):
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"""return all parsers that work on a given file, defaults to all of them"""
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return {
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'pocket': parse_pocket_export,
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'pinboard': parse_json_export,
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'bookmarks': parse_bookmarks_export,
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'rss': parse_rss_export,
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'pinboard_rss': parse_pinboard_rss_feed,
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'medium_rss': parse_medium_rss_feed,
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}
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def parse_links(path):
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"""parse a list of links dictionaries from a bookmark export file"""
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links = []
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with open(path, 'r', encoding='utf-8') as file:
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for parser_func in get_parsers(file).values():
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# otherwise try all parsers until one works
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try:
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links += list(parser_func(file))
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if links:
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break
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except (ValueError, TypeError, IndexError, AttributeError, etree.ParseError):
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# parser not supported on this file
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pass
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return links
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def parse_pocket_export(html_file):
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"""Parse Pocket-format bookmarks export files (produced by getpocket.com/export/)"""
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html_file.seek(0)
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pattern = re.compile("^\\s*<li><a href=\"(.+)\" time_added=\"(\\d+)\" tags=\"(.*)\">(.+)</a></li>", re.UNICODE)
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for line in html_file:
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# example line
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# <li><a href="http://example.com/ time_added="1478739709" tags="tag1,tag2">example title</a></li>
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match = pattern.search(line)
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if match:
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fixed_url = match.group(1).replace('http://www.readability.com/read?url=', '') # remove old readability prefixes to get original url
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time = datetime.fromtimestamp(float(match.group(2)))
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info = {
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'url': fixed_url,
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'domain': domain(fixed_url),
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'base_url': base_url(fixed_url),
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'timestamp': str(time.timestamp()),
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'tags': match.group(3),
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'title': match.group(4).replace(' — Readability', '').replace('http://www.readability.com/read?url=', '') or base_url(fixed_url),
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'sources': [html_file.name],
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}
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info['type'] = get_link_type(info)
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yield info
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def parse_json_export(json_file):
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"""Parse JSON-format bookmarks export files (produced by pinboard.in/export/)"""
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json_file.seek(0)
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json_content = json.load(json_file)
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for line in json_content:
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# example line
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# {"href":"http:\/\/www.reddit.com\/r\/example","description":"title here","extended":"","meta":"18a973f09c9cc0608c116967b64e0419","hash":"910293f019c2f4bb1a749fb937ba58e3","time":"2014-06-14T15:51:42Z","shared":"no","toread":"no","tags":"reddit android"}]
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if line:
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erg = line
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time = datetime.strptime(erg['time'].split(',', 1)[0], '%Y-%m-%dT%H:%M:%SZ')
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info = {
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'url': erg['href'],
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'domain': domain(erg['href']),
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'base_url': base_url(erg['href']),
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'timestamp': erg.get('timestamp', str(time.timestamp())),
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'tags': erg['tags'],
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'title': erg['description'].replace(' — Readability', ''),
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'sources': [json_file.name],
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}
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info['type'] = get_link_type(info)
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yield info
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def parse_rss_export(rss_file):
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"""Parse RSS XML-format files into links"""
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rss_file.seek(0)
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items = rss_file.read().split('</item>\n<item>')
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for item in items:
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# example item:
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# <item>
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# <title><![CDATA[How JavaScript works: inside the V8 engine]]></title>
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# <category>Unread</category>
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# <link>https://blog.sessionstack.com/how-javascript-works-inside</link>
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# <guid>https://blog.sessionstack.com/how-javascript-works-inside</guid>
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# <pubDate>Mon, 21 Aug 2017 14:21:58 -0500</pubDate>
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# </item>
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trailing_removed = item.split('</item>', 1)[0]
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leading_removed = trailing_removed.split('<item>', 1)[-1]
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rows = leading_removed.split('\n')
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def get_row(key):
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return [r for r in rows if r.startswith('<{}>'.format(key))][0]
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title = str_between(get_row('title'), '<![CDATA[', ']]')
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url = str_between(get_row('link'), '<link>', '</link>')
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ts_str = str_between(get_row('pubDate'), '<pubDate>', '</pubDate>')
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time = datetime.strptime(ts_str, "%a, %d %b %Y %H:%M:%S %z")
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info = {
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'url': url,
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'domain': domain(url),
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'base_url': base_url(url),
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'timestamp': str(time.timestamp()),
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'tags': '',
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'title': title,
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'sources': [rss_file.name],
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}
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info['type'] = get_link_type(info)
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yield info
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def parse_bookmarks_export(html_file):
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"""Parse netscape-format bookmarks export files (produced by all browsers)"""
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html_file.seek(0)
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pattern = re.compile("<a href=\"(.+?)\" add_date=\"(\\d+)\"[^>]*>(.+)</a>", re.UNICODE | re.IGNORECASE)
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for line in html_file:
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# example line
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# <DT><A HREF="https://example.com/?q=1+2" ADD_DATE="1497562974" LAST_MODIFIED="1497562974" ICON_URI="https://example.com/favicon.ico" ICON="data:image/png;base64,...">example bookmark title</A>
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match = pattern.search(line)
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if match:
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url = match.group(1)
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time = datetime.fromtimestamp(float(match.group(2)))
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info = {
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'url': url,
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'domain': domain(url),
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'base_url': base_url(url),
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'timestamp': str(time.timestamp()),
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'tags': "",
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'title': match.group(3),
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'sources': [html_file.name],
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}
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info['type'] = get_link_type(info)
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yield info
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def parse_pinboard_rss_feed(rss_file):
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"""Parse Pinboard RSS feed files into links"""
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rss_file.seek(0)
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root = etree.parse(rss_file).getroot()
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items = root.findall("{http://purl.org/rss/1.0/}item")
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for item in items:
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url = item.find("{http://purl.org/rss/1.0/}link").text
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tags = item.find("{http://purl.org/dc/elements/1.1/}subject").text
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title = item.find("{http://purl.org/rss/1.0/}title").text
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ts_str = item.find("{http://purl.org/dc/elements/1.1/}date").text
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# = 🌈🌈🌈🌈
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# = 🌈🌈🌈🌈
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# = 🏆🏆🏆🏆
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# Pinboard includes a colon in its date stamp timezone offsets, which
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# Python can't parse. Remove it:
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if ":" == ts_str[-3:-2]:
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ts_str = ts_str[:-3]+ts_str[-2:]
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time = datetime.strptime(ts_str, "%Y-%m-%dT%H:%M:%S%z")
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info = {
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'url': url,
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'domain': domain(url),
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'base_url': base_url(url),
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'timestamp': str(time.timestamp()),
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'tags': tags,
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'title': title,
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'sources': [rss_file.name],
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}
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info['type'] = get_link_type(info)
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yield info
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def parse_medium_rss_feed(rss_file):
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"""Parse Medium RSS feed files into links"""
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rss_file.seek(0)
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root = etree.parse(rss_file).getroot()
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items = root.find("channel").findall("item")
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for item in items:
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# for child in item:
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# print(child.tag, child.text)
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url = item.find("link").text
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title = item.find("title").text
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ts_str = item.find("pubDate").text
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time = datetime.strptime(ts_str, "%a, %d %b %Y %H:%M:%S %Z")
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info = {
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'url': url,
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'domain': domain(url),
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'base_url': base_url(url),
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'timestamp': str(time.timestamp()),
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'tags': "",
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'title': title,
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'sources': [rss_file.name],
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}
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info['type'] = get_link_type(info)
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yield info
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