Initial commit

examples/ytfeed.aggregate

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+# 2025 dtb. public domain
+import re, sys, xml.etree.ElementTree as ET
+ET.register_namespace("",      "http://www.w3.org/2005/Atom")
+ET.register_namespace("media", "http://search.yahoo.com/mrss/")
+ET.register_namespace("yt",    "http://www.youtube.com/xml/schemas/2015")
+def sortby(entry):
+    return entry.findall("{http://www.w3.org/2005/Atom}published")[0].text
+macrofeed = ET.Element('feed')
+macrofeed.extend(
+    sorted([
+            entry
+            # Split the input by file.
+            for feed in re.split(r'<\?xml.*?\?>', sys.stdin.read())[1:]
+            # Get the entries out of each file.
+            for entry
+                in ET.fromstring(feed)
+                    .findall("{http://www.w3.org/2005/Atom}entry")
+        ],
+        # Gets the publication date and sorts the entries from old to new.
+        key = lambda entry
+           : entry.findall("{http://www.w3.org/2005/Atom}published")[0].text,
+        reverse = False # toggle this to switch the order
+    )
+)
+print(ET.tostring(macrofeed, encoding="unicode"))