rss_to_irc_topic.py

#!/usr/bin/env python3
# Format items in an RSS feed for use in an IRC channel topic. E.g:
# ma 18jun Hackatrain| ma 18jun UT Educational Award Ceremony| wo 20jun Lunchlezing Ricardo Rail
#
# Licence: MIT
import re
import datetime
from rss_parse import RSSParser
from dateutil.parser import parse

RSS_URL = 'https://www.scintilla.utwente.nl/nl/activity/calendar.rss'

xpath_configuration = {
  'xpathParse': {
    'stripHTML': True,
    'item': '/rss/channel/item',
    'namespace': {'re': 'http://exslt.org/regular-expressions'},
    'title': './/title/text()',
    'url': './/link/text()',
    'body': './/description/text()',
    'date': './/pubDate/text()',
    'image': './/description/text()',
  }
}

def dutch_month_to_english_abbr(dutch_month):
  dutch_month = dutch_month.lower()
  if dutch_month == 'maart':
    return 'mar'
  if dutch_month == 'mei':
    return 'may'
  if dutch_month == 'oktober':
    return 'oct'
  return dutch_month[:3]

def get_date(item):
  date_pat = r'(\d{2}) (\w+) (\d{4}) (\d{2}:\d{2})'
  # Split date string from body
  # Date str = dd dutchmonth yyyy hh:mm
  day, month, year, time = re.findall(date_pat, item.body[:50])[0] 
  return parse(' '.join([day, dutch_month_to_english_abbr(month), year, time]))

# Format title in the following way: 'ma 18jun UT Educational award'
def format_item(title, body):
  full_date_pat = r'(\w+) (\d{2}) (\w+) (\d{4}) (\d{2}:\d{2})'
  # Date str = dutchweekday dd dutchmonth yyyy hh:mm
  weekday, day, month, year, time = re.findall(full_date_pat, body[:50])[0]
  return '%s %s%s %s' % (weekday[:2], day, month[:3], title) 
  
parsed_feed = RSSParser(RSS_URL, xpath_configuration)
# Sort items by event date
# Format the title
# Print all the titles, joined by bars
print('| '.join([format_item(i.title, i.body[:50]) for i in sorted(parsed_feed, key=get_date) if get_date(i) >= datetime.datetime.now()]))