reddit_feed/post_process.py

63 lines
1.5 KiB
Python

import re
HTML_LINK_RE = re.compile(r'href="([^"]+)"')
LINK_RE = re.compile(r'\[.*\]\(([^)]+)\)')
INTERNAL_RE = re.compile(r"^https?://(reddit.com|redd.it|old.reddit.com|www.reddit.com|np.reddit.com)/(.*)")
def post_process(thing):
thing["_v"] = 1.2
urls = set()
if "body_html" in thing and thing["body_html"]:
urls.update(get_links_from_body_html(thing["body_html"]))
elif "body" in thing and thing["body"]:
urls.update(get_links_from_body(thing["body"]))
if "selftext_html" in thing and thing["selftext_html"]:
urls.update(get_links_from_body_html(thing["selftext_html"]))
elif "selftext" in thing and thing["selftext"]:
urls.update(get_links_from_body(thing["selftext"]))
if "url" in thing and thing["url"] and is_external(thing["url"]):
urls.add(thing["url"])
thing["_urls"] = list(urls)
return thing
def get_links_from_body_html(body):
result = set()
for match in HTML_LINK_RE.finditer(body):
url = match.group(1)
if is_external(url):
result.add(url)
return list(result)
def get_links_from_body(body):
body = body.replace("\\)", "(")
for match in LINK_RE.finditer(body):
url = match.group(1)
if is_external(url):
yield url
def is_external(url):
if INTERNAL_RE.match(url):
return False
if "message/compose" in url:
return False
if url.startswith(("/", "#", "</")):
return False
return True