Create a simple RSS feed for use in Slack

scripts/render-all.sh

@@ -21,4 +21,4 @@ do
 done
 
 ./venv/bin/python3 ./scripts/render-indices.py
-./venv/bin/python3 ./scripts/render-feed.py
+./venv/bin/python3 ./scripts/render-feeds.py

scripts/render-feeds.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+
+import datetime
+from html.parser import HTMLParser
+from io import StringIO
+from pathlib import Path
+import re
+
+from feedgenerator import DefaultFeed
+import mistune
+
+
+def strip_tags(html):
+    class MLStripper(HTMLParser):
+        def __init__(self):
+            super().__init__()
+            self.reset()
+            self.strict = False
+            self.convert_charrefs= True
+            self.text = StringIO()
+
+        def handle_data(self, d):
+            self.text.write(d)
+
+        def get_data(self):
+            return self.text.getvalue()
+
+    s = MLStripper()
+    s.feed(html)
+    return s.get_data()
+
+FEED_ARGS = {
+    "title": "SR(A)WN",
+    "link": "https://studentrobotics.org/srawn/",
+    "description": "Student Robotics (Almost) Weekly Newsletter",
+    "author_name": "Student Robotics"
+}
+
+
+working_dir = Path('.')
+feed = DefaultFeed(**FEED_ARGS)
+simple_feed = DefaultFeed(**FEED_ARGS)
+md = mistune.create_markdown()
+
+
+for md_path in sorted(working_dir.glob("SR20*/*.md")):
+    filename_match = re.match("^(20\d{2}-\d{2}-\d{2})-srawn-(\d{2})$", md_path.stem)
+    if not filename_match:
+        exit(f"{md_path.stem} does not match format. Run the linter.")
+    date, issue = filename_match.groups()
+
+    folder_match = re.match("^(SR20\d{2})$", md_path.parent.name)
+    if not folder_match:
+        exit(f"{md_path.parent.name} does not match format. Run the linter.")
+    sryear, = folder_match.groups()
+
+    link = f"https://studentrobotics.org/srawn/{md_path.parent.stem}/{md_path.stem}.html"
+    content = md(md_path.read_text())
+    title = f"{sryear} Issue {issue}"
+    publish_date = datetime.date.fromisoformat(date)
+
+    feed.add_item(
+        title=title,
+        link=link,
+        unique_id=link,
+        pubdate=publish_date,
+        description=content,
+    )
+    simple_feed.add_item(
+        title=title,
+        link=link,
+        unique_id=link,
+        pubdate=publish_date,
+        description=strip_tags(content),
+    )
+
+with (working_dir / "out" / "html" / "rss.xml").open("w") as f:
+    feed.write(f, "utf-8")
+
+with (working_dir / "out" / "html" / "rss-simple.xml").open("w") as f:
+    simple_feed.write(f, "utf-8")