[modules] re-enable rss
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tobi-wan-kenobi
parent
7956b28463
commit
9c4c712931
1 changed files with 312 additions and 0 deletions
312
modules/contrib/rss.py
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312
modules/contrib/rss.py
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# pylint: disable=C0111,R0903
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"""RSS news ticker
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Fetches rss news items and shows these as a news ticker.
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Left-clicking will open the full story in a browser.
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New stories are highlighted.
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Parameters:
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* rss.feeds : Space-separated list of RSS URLs
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* rss.length : Maximum length of the module, default is 60
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"""
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try:
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import feedparser
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DEPENDENCIES_OK = True
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except ImportError:
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DEPENDENCIES_OK = False
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import webbrowser
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import time
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import os
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import tempfile
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import logging
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import random
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import re
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import json
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import bumblebee.input
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import bumblebee.output
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import bumblebee.engine
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# pylint: disable=too-many-instance-attributes
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class Module(bumblebee.engine.Module):
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REFRESH_DELAY = 600
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SCROLL_SPEED = 3
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LAYOUT_STYLES_ITEMS = [[1,1,1],[3,3,2],[2,3,3],[3,2,3]]
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HISTORY_FILENAME = ".config/i3/rss.hist"
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def __init__(self, engine, config):
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super(Module, self).__init__(engine, config,
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bumblebee.output.Widget(full_text=self.ticker_update if DEPENDENCIES_OK else self._show_error)
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)
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# Use BBC newsfeed as demo:
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self._feeds = self.parameter('feeds', 'https://www.espn.com/espn/rss/news').split(" ")
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self._feeds_to_update = []
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self._response = ""
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self._max_title_length = int(self.parameter("length", 60))
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self._items = []
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self._current_item = None
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self._ticker_offset = 0
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self._pre_delay = 0
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self._post_delay = 0
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self._state = []
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self._newspaper_filename = tempfile.mktemp('.html')
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self._last_refresh = 0
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self._last_update = 0
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engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE, cmd=self._open)
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engine.input.register_callback(self, button=bumblebee.input.RIGHT_MOUSE, cmd=self._create_newspaper)
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self._history = {'ticker': {}, 'newspaper': {}}
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self._load_history()
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def _load_history(self):
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if os.path.isfile(self.HISTORY_FILENAME):
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self._history = json.loads(open(self.HISTORY_FILENAME, "r").read())
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def _update_history(self, group):
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sources = set([i['source'] for i in self._items])
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self._history[group] = dict([[s, [i['title'] for i in self._items if i['source'] == s]] for s in sources])
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def _save_history(self):
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if not os.path.exists(os.path.dirname(self.HISTORY_FILENAME)):
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os.makedirs(os.path.dirname(self.HISTORY_FILENAME))
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open(self.HISTORY_FILENAME, "w").write(json.dumps(self._history))
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def _check_history(self, items, group):
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for i in items:
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i['new'] = not (i['source'] in self._history[group] and i['title'] in self._history[group][i['source']])
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def _open(self, _):
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if self._current_item:
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webbrowser.open(self._current_item['link'])
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def _check_for_image(self, entry):
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image = next(iter([l['href'] for l in entry['links'] if l['rel'] == 'enclosure']), None)
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if not image and 'media_content' in entry:
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try:
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media = sorted(entry['media_content'], key=lambda i: i['height'] if 'height' in i else 0, reverse=True)
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image = next(iter([i['url'] for i in media if i['medium'] == 'image']), None)
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except Exception:
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pass
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if not image:
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match = re.search(r'<img[^>]*src\s*=["\']*([^\s^>^"^\']*)["\']*', entry['summary'])
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if match:
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image = match.group(1)
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return image if image else ''
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def _remove_tags(self, txt):
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return re.sub('<[^>]*>', '', txt)
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def _create_item(self, entry, url, feed):
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return {'title': self._remove_tags(entry['title'].replace('\n', ' ')),
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'link': entry['link'],
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'new': True,
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'source': url,
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'summary': self._remove_tags(entry['summary']),
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'feed': feed,
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'image': self._check_for_image(entry),
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'published': time.mktime(entry.published_parsed) if hasattr(entry, 'published_parsed') else 0}
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def _update_items_from_feed(self, url):
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parser = feedparser.parse(url)
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new_items = [self._create_item(entry, url, parser['feed']['title']) for entry in parser['entries']]
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# Check history
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self._check_history(new_items, 'ticker')
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# Remove the previous items
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self._items = [i for i in self._items if i['source'] != url]
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# Add the new items
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self._items.extend(new_items)
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# Sort the items on publish date
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self._items.sort(key=lambda i: i['published'], reverse=True)
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def _check_for_refresh(self):
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if self._feeds_to_update:
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# Update one feed at a time to not overload this update cycle
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url = self._feeds_to_update.pop()
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self._update_items_from_feed(url)
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if not self._feeds_to_update:
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self._update_history('ticker')
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self._save_history()
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if not self._current_item:
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self._next_item()
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elif time.time()-self._last_refresh >= self.REFRESH_DELAY:
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# Populate the list with feeds to update
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self._feeds_to_update = self._feeds[:]
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# Update the refresh time
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self._last_refresh = time.time()
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def _next_item(self):
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self._ticker_offset = 0
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self._pre_delay = 2
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self._post_delay = 4
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if not self._items:
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return
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# Index of the current element
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idx = self._items.index(self._current_item) if self._current_item in self._items else - 1
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# First show new items, else show next
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new_items = [i for i in self._items if i['new']]
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self._current_item = next(iter(new_items), self._items[(idx+1) % len(self._items)])
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def _check_scroll_done(self):
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# Check if the complete title has been shown
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if self._ticker_offset + self._max_title_length > len(self._current_item['title']):
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# Do not immediately show next item after scroll
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self._post_delay -= 1
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if self._post_delay == 0:
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self._current_item['new'] = False
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# Mark the previous item as 'old'
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self._next_item()
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else:
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# Increase scroll position
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self._ticker_offset += self.SCROLL_SPEED
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def _show_error(self, _):
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return "Please install feedparser first"
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def ticker_update(self, _):
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# Only update the ticker once a second
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now = time.time()
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if now-self._last_update < 1:
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return self._response
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self._last_update = now
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self._check_for_refresh()
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# If no items were retrieved, return an empty string
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if not self._current_item:
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return " "*self._max_title_length
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# Prepare a substring of the item title
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self._response = self._current_item['title'][self._ticker_offset:self._ticker_offset+self._max_title_length]
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# Add spaces if too short
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self._response = self._response.ljust(self._max_title_length)
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# Do not immediately scroll
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if self._pre_delay > 0:
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# Change state during pre_delay for new items
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if self._current_item['new']:
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self._state = ['warning']
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self._pre_delay -= 1
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return self._response
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self._state = []
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self._check_scroll_done()
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return self._response
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def update(self, widgets):
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pass
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def state(self, _):
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return self._state
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def _create_news_element(self, item, overlay_title):
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try:
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timestr = "" if item['published'] == 0 else str(time.ctime(item['published']))
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except Exception as exc:
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logging.error(str(exc))
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raise e
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element = "<div class='item' onclick=window.open('"+item['link']+"')>"
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element += "<div class='titlecontainer'>"
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element += " <img "+("" if item['image'] else "class='noimg' ")+"src='"+item['image']+"'>"
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element += " <div class='title"+(" overlay" if overlay_title else "")+"'>"+("<span class='star'>★</span>" if item['new'] else "")+item['title']+"</div>"
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element += "</div>"
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element += "<div class='summary'>"+item['summary']+"</div>"
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element += "<div class='info'><span class='author'>"+item['feed']+"</span><span class='published'>"+timestr+"</span></div>"
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element += "</div>"
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return element
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def _create_news_section(self, newspaper_items):
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style = random.randint(0, 3)
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section = "<table><tr class='style"+str(style)+"'>"
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for i in range(0, 3):
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section += "<td><div class='itemcontainer'>"
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for _ in range(0, self.LAYOUT_STYLES_ITEMS[style][i]):
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if newspaper_items:
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section += self._create_news_element(newspaper_items[0], self.LAYOUT_STYLES_ITEMS[style][i] != 3)
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del newspaper_items[0]
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section += "</div></td>"
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section += "</tr></table>"
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return section
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def _create_newspaper(self, _):
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content = ""
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newspaper_items = self._items[:]
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self._check_history(newspaper_items, 'newspaper')
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# Make sure new items are always listed first, independent of publish date
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newspaper_items.sort(key=lambda i: i['published']+(10000000 if i['new'] else 0), reverse=True)
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while newspaper_items:
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content += self._create_news_section(newspaper_items)
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open(self._newspaper_filename, "w").write(HTML_TEMPLATE.replace("[[CONTENT]]", content))
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webbrowser.open("file://"+self._newspaper_filename)
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self._update_history('newspaper')
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self._save_history()
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HTML_TEMPLATE = """<!DOCTYPE html>
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<html>
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<head>
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<script>
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window.onload = function() {
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var images = document.getElementsByTagName('img');
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// Remove very small images
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for(var i = 0; i < images.length; i++) {
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if (images[i].naturalWidth<50 || images[i].naturalHeight<50) {
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images[i].src = ''
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images[i].className+=' noimg'
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}
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}
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}
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</script>
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</head>
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<style>
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body {background: #eee; font-family: Helvetica neue;}
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td {background: #fff; height: 100%;}
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tr.style0 td {width: 33%;}
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tr.style1 td {width: 20%;}
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tr.style1 td:last-child {width: 60%;}
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tr.style2 td {width: 20%;}
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tr.style2 td:first-child {width: 60%;}
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tr.style3 td {width: 20%;}
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tr.style3 td:nth-child(2) {width: 60%;}
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img {width: 100%; display: block; }
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img.noimg {min-height:250px; background: #1299c8;}
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#content {width: 1500px; margin: auto; background: #eee; padding: 1px;}
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#newspapertitle {text-align: center; font-size: 60px; font-family: Arial Black; background: #1299c8; font-style: Italic; padding: 10px; color: #fff; }
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.star {color: #ffa515; font-size: 24px;}
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.section {display: flex;}
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.column {display: flex;}
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.itemcontainer {width: 100%; height: 100%; position: relative; display: inline-table;}
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.item {cursor: pointer; }
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.titlecontainer {position: relative;}
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.title.overlay {font-family: Arial; position: absolute; bottom: 10px; color: #fff; font-weight: bold; text-align: right; max-width: 75%; right: 10px; font-size: 23px; text-shadow: 1px 0 0 #000, 0 -1px 0 #000, 0 1px 0 #000, -1px 0 0 #000;}
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.title:not(.overlay) {font-weight: bold; padding: 0px 10px;}
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.summary {color: #444; padding: 10px 10px 0px 10px; font-family: Times new roman; font-size: 18px; flex: 1;max-height: 105px; overflow: hidden;}
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.info {color: #aaa; font-family: arial; font-size: 13px; padding: 10px;}
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.published {float: right;}
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</style>
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<body>
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<div id='content'>
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<div id='newspapertitle'>Bumblebee Daily</div>
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[[CONTENT]]
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</div>
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</body>
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</html>"""
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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