feed2toot-docker/feed2toot/main.py

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2017-04-09 08:30:48 +00:00
#!/usr/bin/env python3
# vim:ts=4:sw=4:ft=python:fileencoding=utf-8
# Copyright © 2015-2017 Carl Chenet <carl.chenet@ohmytux.com>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>
"""Checks an RSS feed and posts new entries to Mastodon."""
# standard libraires imports
import codecs
import importlib
import logging
import logging.handlers
import os
import sys
# 3rd party libraries imports
import feedparser
from persistentlist import PersistentList
# app libraries imports
from feed2toot.addtags import AddTags
from feed2toot.cliparse import CliParse
from feed2toot.confparse import ConfParse
from feed2toot.filterentry import FilterEntry
from feed2toot.removeduplicates import RemoveDuplicates
from feed2toot.tootpost import TootPost
class Main(object):
'''Main class of Feed2toot'''
def __init__(self):
self.main()
def setup_logging(self, options):
if options.syslog:
sl = logging.handlers.SysLogHandler(address='/dev/log')
sl.setFormatter(logging.Formatter('feed2toot[%(process)d]: %(message)s'))
# convert syslog argument to a numeric value
loglevel = getattr(logging, options.syslog.upper(), None)
if not isinstance(loglevel, int):
raise ValueError('Invalid log level: %s' % loglevel)
sl.setLevel(loglevel)
logging.getLogger('').addHandler(sl)
logging.debug('configured syslog level %s' % loglevel)
logging.getLogger('').setLevel(logging.DEBUG)
sh = logging.StreamHandler()
sh.setLevel(options.log_level.upper())
logging.getLogger('').addHandler(sh)
logging.debug('configured stdout level %s' % sh.level)
def main(self):
"""The main function."""
clip = CliParse()
clioptions = clip.options
self.setup_logging(clioptions)
# iterating over the different configuration files
cfgp = ConfParse(clioptions)
confs = cfgp.confvalues
for conf in confs:
options = conf[0]
config = conf[1]
tweetformat = conf[2]
feeds = conf[3]
plugins = conf[4]
# open the persistent list
cache = PersistentList(options['cachefile'][0:-3], options['cache_limit'])
if options['hashtaglist']:
severalwordshashtags = codecs.open(options['hashtaglist'],
encoding='utf-8').readlines()
severalwordshashtags = [i.rstrip('\n') for i in severalwordshashtags]
# reverse feed entries because most recent one should be sent as the last one in Mastodon
for feed in feeds:
# store the patterns by rss
if 'patterns' in feed:
patterns = feed['patterns']
entries = feed['feed']['entries'][0:clioptions.limit]
entries.reverse()
# --rss-sections option: print rss sections and exit
if clioptions.rsssections:
if entries:
print('The following sections are available in this RSS feed: {}'.format([j for j in entries[0]]))
sys.exit(0)
else:
sys.exit('Could not parse the section of the rss feed')
totweet = []
# cache the ids of last rss feeds
if not clioptions.all:
for i in entries:
if 'id' in i and i['id'] not in cache:
totweet.append(i)
else:
totweet = entries
for entry in totweet:
if 'id' not in entry:
# malformed feed entry, skip
continue
logging.debug('found feed entry %s, %s', entry['id'], entry['title'])
rss = {
'id': entry['id'],
}
severalwordsinhashtag = False
# lets see if the rss feed has hashtag
if 'tags' in entry:
hastags = True
else:
hastags = False
if hastags:
rss['hashtags'] = []
for i, _ in enumerate(entry['tags']):
if 'hashtaglist' in options:
prehashtags = entry['tags'][i]['term']
tmphashtags = entry['tags'][i]['term']
for element in severalwordshashtags:
if element in prehashtags:
severalwordsinhashtag = True
tmphashtags = prehashtags.replace(element,
''.join(element.split()))
# replace characters stopping a word from being a hashtag
if severalwordsinhashtag:
# remove ' from hashtag
tmphashtags = tmphashtags.replace("'", "")
# remove - from hashtag
tmphashtags = tmphashtags.replace("-", "")
# remove . from hashtag
tmphashtags = tmphashtags.replace(".", "")
# remove space from hashtag
finalhashtags = tmphashtags.replace(" ", "")
rss['hashtags'].append('#{}'.format(finalhashtags))
else:
nospace = ''.join(entry['tags'][i]['term'])
# remove space from hashtag
nospace = nospace.replace(" ", "")
rss['hashtags'].append('#{}'.format(nospace))
elements=[]
for i in tweetformat.split(' '):
tmpelement = ''
# if i is not an empty string
if i:
if i.startswith('{') and i.endswith('}'):
tmpelement = i.strip('{}')
elements.append(tmpelement)
# match elements of the tweet format string with available element in the RSS feed
fe = FilterEntry(elements, entry, options, feed['patterns'], feed['rssobject'])
entrytosend = fe.finalentry
if entrytosend:
tweetwithnotag = tweetformat.format(**entrytosend)
# remove duplicates from the final tweet
dedup = RemoveDuplicates(tweetwithnotag)
# only append hashtags if they exist
# remove last tags if tweet too long
if 'hashtags' in rss:
addtag = AddTags(dedup.finaltweet, rss['hashtags'])
finaltweet = addtag.finaltweet
else:
finaltweet = dedup.finaltweet
if clioptions.dryrun:
if entrytosend:
logging.warning('Tweet should have been sent: {tweet}'.format(tweet=finaltweet))
else:
logging.debug('This rss entry did not meet pattern criteria. Should have not been sent')
else:
storeit = True
if entrytosend and not clioptions.populate:
logging.debug('sending the following tweet:{tweet}'.format(tweet=finaltweet))
twp = TootPost(config, finaltweet)
storeit = twp.storeit()
else:
logging.debug('populating RSS entry {}'.format(rss['id']))
# in both cas we store the id of the sent tweet
if storeit:
cache.append(rss['id'])
# plugins
if plugins and entrytosend:
for plugin in plugins:
capitalizedplugin = plugin.title()
pluginclassname = '{plugin}Plugin'.format(plugin=capitalizedplugin)
pluginmodulename = 'feed2toot.plugins.{pluginmodule}'.format(pluginmodule=pluginclassname.lower())
try:
pluginmodule = importlib.import_module(pluginmodulename)
pluginclass = getattr(pluginmodule, pluginclassname)
pluginclass(plugins[plugin], finaltweet)
except ImportError as err:
print(err)
# do not forget to close cache (shelf object)
cache.close()