feed2toot/feed2toot/main.py

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#!/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
# 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
from feed2toot.feedcache import FeedCache
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]
# create link to the persistent list
cache = FeedCache(options)
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.getdeque():
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()