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Handling CSS and fonts properly in RSSUpdates digests

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This commit is contained in:
Fabio Manganiello 2019-10-13 12:29:39 +02:00
parent 4c72646759
commit 9914d4ef0b
1 changed files with 28 additions and 5 deletions
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33
platypush/backend/http/request/rss/__init__.py
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@ -99,12 +99,19 @@ class RssUpdates(HttpRequest):
self.title = feed.feed['title'] self.title = feed.feed['title']
source_record.title = self.title source_record.title = self.title
digest = u''' content = u'''
<h1 style="margin-top: 30px">{}</h1> <h1 style="margin-top: 30px">{}</h1>
<h2 style="margin-top: 10px; page-break-after: always"> <h2 style="margin-top: 10px; page-break-after: always">
Feeds digest generated on {} </h2>'''.format(self.title, Feeds digest generated on {} </h2>'''.format(self.title,
datetime.datetime.now().strftime('%d %B %Y, %H:%M')) datetime.datetime.now().strftime('%d %B %Y, %H:%M'))
style = '''
body {
font-size: 22px;
font-family: 'Merriweather', Georgia, 'Times New Roman', Times, serif;
}
'''
self.logger.info('Parsed {:d} items from RSS feed <{}>' self.logger.info('Parsed {:d} items from RSS feed <{}>'
.format(len(feed.entries), self.url)) .format(len(feed.entries), self.url))
@ -127,8 +134,8 @@ class RssUpdates(HttpRequest):
else: else:
entry.content = None entry.content = None
digest += '<h1 style="page-break-before: always">{}</h1>{}' \ content += u'''<h1 style="page-break-before: always">{}</h1>
.format(entry.title, entry.content) <div class="_parsed-content">{}</div>'''.format(entry.title, entry.content)
e = { e = {
'entry_id': entry.id, 'entry_id': entry.id,
@ -164,11 +171,27 @@ class RssUpdates(HttpRequest):
os.makedirs(os.path.dirname(digest_filename), exist_ok=True) os.makedirs(os.path.dirname(digest_filename), exist_ok=True)
if self.digest_format == 'html': if self.digest_format == 'html':
content = '''
<html>
<head>
<title>{title}</title>
<style>{style}</style>
</head>
<body>{{content}}</body>
</html>
'''.format(title=self.title, style=style, content=content)
with open(digest_filename, 'w', encoding='utf-8') as f: with open(digest_filename, 'w', encoding='utf-8') as f:
f.write(digest) f.write(content)
elif self.digest_format == 'pdf': elif self.digest_format == 'pdf':
import weasyprint import weasyprint
weasyprint.HTML(string=digest).write_pdf(digest_filename) from weasyprint.fonts import FontConfiguration
font_config = FontConfiguration()
css = [weasyprint.CSS('https://fonts.googleapis.com/css?family=Merriweather'),
weasyprint.CSS(string=style, font_config=font_config)]
weasyprint.HTML(string=content).write_pdf(digest_filename, stylesheets=css)
else: else:
raise RuntimeError('Unsupported format: {}. Supported formats: ' + raise RuntimeError('Unsupported format: {}. Supported formats: ' +
'html or pdf'.format(self.digest_format)) 'html or pdf'.format(self.digest_format))