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feeds.py
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feeds.py
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from feedgen.feed import FeedGenerator
import contents
from dateutil import parser
import markdown
import pytz
from datetime import datetime
def convert_dtstr_to_dt(date_str):
"""
Convert a naive or non-naive date/datetime string to a datetime object.
Naive datetime strings are assumed to be in GMT (UTC) timezone.
Args:
date_str (str): The date or datetime string to convert.
Returns:
datetime: The corresponding datetime object.
"""
try:
dt = parser.parse(date_str)
if dt.tzinfo is None:
# If the datetime object is naive, set it to GMT (UTC)
dt = dt.replace(tzinfo=pytz.UTC)
return dt
except (ValueError, TypeError) as e:
print(f"Error parsing date string: {e}")
return None
def filter_posts_by_tag(posts: list[dict], tag: str):
"""
Generator function that filters posts by a single tag.
"""
for post in posts:
post_tags = [x.lower() for x in post.get('tags', [])]
if tag in post_tags:
yield post
def github_markdown_to_html(markdown_str):
"""
Convert a GitHub-flavored Markdown string to HTML.
Args:
markdown_str (str): The GitHub-flavored Markdown string to convert.
Returns:
str: The resulting HTML string.
"""
html = markdown.markdown(
markdown_str,
extensions=['extra', 'codehilite', 'toc', 'tables']
)
return html
def add_entry(fg, raw):
content, metadata = contents.get_post(raw['slug'])
fe = fg.add_entry()
linker = f'https://daniel.feldroy.com/posts/{raw["slug"]}'
fe.id(linker)
fe.link(href=linker)
fe.title(metadata['title'])
fe.summary(metadata['description'] or '')
fe.content(content=github_markdown_to_html(content), type='CDATA')
fe.contributor([{'name': 'Daniel Roy Greenfeld', 'email': '[email protected]'}])
fe.author([{'name': 'Daniel Roy Greenfeld', 'email': '[email protected]'}])
fe.pubDate(convert_dtstr_to_dt(metadata['date']))
# Add tags to the entry
for tag in metadata.get('tags', []):
fe.category(term=tag)
def build_feed(content_tag: str | None = None):
fg = FeedGenerator()
fg.id('https://daniel.feldroy.com')
fg.title('Daniel Roy Greenfeld')
fg.author({'name': 'Daniel Roy Greenfeld', 'email': '[email protected]', 'uri':'https://daniel.feldroy.com'})
fg.link(href='https://daniel.feldroy.com', rel='alternate')
fg.title('Inside the head of Daniel Roy Greenfeld')
fg.logo('https://daniel.feldroy.com/images/pydanny-cartwheel.png')
fg.rights(f'All rights reserved {datetime.now().year}, Daniel Roy Greenfeld')
fg.language('en')
posts = contents.list_posts(published=True)
if content_tag is not None:
posts = list(filter_posts_by_tag(posts, content_tag))
for raw in posts[:3]:
add_entry(fg, raw)
if content_tag is not None:
fg.atom_file(f'feeds/{content_tag}.atom.xml', pretty=True)
else:
fg.atom_file('feeds/atom.xml', pretty=True)
if __name__ == '__main__':
import sys
content_tag = sys.argv[1] if len(sys.argv) > 1 else None
build_feed(content_tag)