Initial proof-of-concept implementation.

gemfeed.py

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+import datetime
+import glob
+import os.path
+
+from feedgen.feed import FeedGenerator
+
+base_url = "gemini://gemini.circumlunar.space/"
+
+feed = FeedGenerator()
+feed.id(base_url)
+feed.title('A Gemini feed.')
+feed.link( href=base_url, rel='alternate' )
+feed.link( href=base_url + "atom.xml", rel='self' )
+
+files = []
+for extension in ("gmi", "gem", "gemini"):
+    files.extend(glob.glob("*.{}".format(extension)))
+    index = "index.{}".format(extension)
+    if index in files:
+        files.remove(index)
+
+latest_update = datetime.datetime.fromtimestamp(0, tz=datetime.timezone.utc)
+
+for filename in files:
+    entry = feed.add_entry()
+    url = base_url + filename
+    entry.guid(url)
+    entry.link(href=url)
+    updated = os.path.getctime(filename)
+    updated = datetime.datetime.fromtimestamp(updated, tz=datetime.timezone.utc)
+    entry.updated(updated)
+    if updated > latest_update:
+        latest_update = updated
+    with open(filename) as fp:
+        for line in fp:
+            if line.startswith("#"):
+                while line[0] == "#":
+                    line = line[1:]
+                title = line.strip()
+                break
+        else:
+            title = filename
+    print("Adding {} with title '{}'...".format(filename, title))
+    entry.title(title)
+
+feed.updated(latest_update)
+feed.atom_file('atom.xml', pretty=True)