155 lines
4.8 KiB
Python
155 lines
4.8 KiB
Python
#!python3
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"""
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Feeds module for InkyCal Project
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Copyright by aceisace
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"""
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import re
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from inkycal.modules.template import inkycal_module
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from inkycal.custom import *
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from random import shuffle
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import feedparser
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filename = os.path.basename(__file__).split('.py')[0]
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logger = logging.getLogger(filename)
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class Feeds(inkycal_module):
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"""RSS class
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parses rss/atom feeds from given urls
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"""
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name = "RSS / Atom - Display feeds from given RSS/ATOM feeds"
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requires = {
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"feed_urls": {
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"label": "Please enter ATOM or RSS feed URL/s, separated by a comma",
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},
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}
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optional = {
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"shuffle_feeds": {
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"label": "Should the parsed RSS feeds be shuffled? (default=True)",
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"options": [True, False],
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"default": True
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},
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}
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def __init__(self, config):
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"""Initialize inkycal_feeds module"""
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super().__init__(config)
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config = config['config']
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# Check if all required parameters are present
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for param in self.requires:
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if param not in config:
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raise Exception(f'config is missing {param}')
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# required parameters
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if config["feed_urls"] and isinstance(config['feed_urls'], str):
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self.feed_urls = config["feed_urls"].split(",")
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else:
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self.feed_urls = config["feed_urls"]
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# optional parameters
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self.shuffle_feeds = config["shuffle_feeds"]
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# give an OK message
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print(f'{filename} loaded')
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def _validate(self):
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"""Validate module-specific parameters"""
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if not isinstance(self.shuffle_feeds, bool):
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print('shuffle_feeds has to be a boolean: True/False')
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def generate_image(self):
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"""Generate image for this module"""
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# Define new image size with respect to padding
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im_width = int(self.width - (2 * self.padding_left))
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im_height = int(self.height - (2 * self.padding_top))
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im_size = im_width, im_height
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logger.info(f'Image size: {im_size}')
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# Create an image for black pixels and one for coloured pixels
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im_black = Image.new('RGB', size=im_size, color='white')
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im_colour = Image.new('RGB', size=im_size, color='white')
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# Check if internet is available
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if internet_available():
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logger.info('Connection test passed')
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else:
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raise NetworkNotReachableError
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# Set some parameters for formatting feeds
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line_spacing = 1
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line_height = self.font.getsize('hg')[1] + line_spacing
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line_width = im_width
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max_lines = (im_height // (self.font.getsize('hg')[1] + line_spacing))
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# Calculate padding from top so the lines look centralised
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spacing_top = int(im_height % line_height / 2)
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# Calculate line_positions
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line_positions = [
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(0, spacing_top + _ * line_height) for _ in range(max_lines)]
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# Create list containing all feeds from all urls
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parsed_feeds = []
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for feeds in self.feed_urls:
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text = feedparser.parse(feeds)
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for posts in text.entries:
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if "summary" in posts:
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summary = posts["summary"]
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parsed_feeds.append(f"•{posts.title}: {re.sub('<[^<]+?>', '', posts.summary)}")
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self._parsed_feeds = parsed_feeds
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# Shuffle the list to prevent showing the same content
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if self.shuffle_feeds:
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shuffle(parsed_feeds)
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# Trim down the list to the max number of lines
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del parsed_feeds[max_lines:]
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# Wrap long text from feeds (line-breaking)
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flatten = lambda z: [x for y in z for x in y]
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filtered_feeds, counter = [], 0
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for posts in parsed_feeds:
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wrapped = text_wrap(posts, font=self.font, max_width=line_width)
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counter += len(wrapped)
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if counter < max_lines:
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filtered_feeds.append(wrapped)
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filtered_feeds = flatten(filtered_feeds)
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self._filtered_feeds = filtered_feeds
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logger.debug(f'filtered feeds -> {filtered_feeds}')
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# Check if feeds could be parsed and can be displayed
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if len(filtered_feeds) == 0 and len(parsed_feeds) > 0:
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print('Feeds could be parsed, but the text is too long to be displayed:/')
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elif len(filtered_feeds) == 0 and len(parsed_feeds) == 0:
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print('No feeds could be parsed :/')
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else:
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# Write feeds on image
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for _ in range(len(filtered_feeds)):
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write(im_black, line_positions[_], (line_width, line_height),
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filtered_feeds[_], font=self.font, alignment='left')
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# return images
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return im_black, im_colour
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if __name__ == '__main__':
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print(f'running {filename} in standalone/debug mode')
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