podcasts.py

#!/usr/bin/env python3

# Escape from Apple Podcasts.
# python3 podcasts.py ~/Library/Containers/com.apple.podcasts/Data/Documents/PodcastsDB.plist > ~/Downloads/export.opml

import os
import sys

import typing as t
import xml.etree.ElementTree as ET

def main(args: t.List[str], env: t.Dict[str, str]) -> None:
    tree = ET.parse(args[1])
    root = tree.getroot()
    
    opml = ET.Element("opml")
    opml.set("version", "1.0")
    head = ET.SubElement(opml, "head")
    title = ET.SubElement(head, "title")
    title.text = "Apple Podcast Export"
    body = ET.SubElement(opml, "body")
    
    for item in items(root):
        title = item.get("title")
        url = item.get("feedUrl")
        if None in (title, url):
            continue
        outline = ET.SubElement(body, "outline")
        outline.set("type", "rss")
        outline.set("text", title)
        outline.set("title", title)
        outline.set("xmlUrl", url)
        outline.set("htmlUrl", url)
    
    sys.stdout.write(ET.tostring(opml, encoding="utf8", method="xml").decode("utf-8"))

def items(root):
    for item in root.findall("./array/dict/array/dict/array/dict"):
        yield asdict(item)

def asdict(element):
    items = [x.text for x in element]
    return dict(zip(items[::2], items[1::2]))

if __name__ == "__main__":
    sys.exit(main(list(sys.argv), dict(os.environ)))