export-google-reader-subscriptions.py

#!/usr/bin/env python
# coding: utf8
"""Export your Google Reader subscriptions to OPML format.

2011 by Michael Elsdörfer. Consider this public domain.


This script depends on the libgreader library:

 https://github.com/askedrelic/libgreader/

Which be installed via:

 $ easy_install libgreader


Usage:

 $ export-google-reader-subscriptions username password

If the password is not given, it is queried via stdin. The final
OPML is written to stdout.
"""

import sys
import xml.etree.ElementTree as ET
try:
 import libgreader
except ImportError:
 print "libgreader not installed. Use easy_install libgreader"
else:
 from libgreader import GoogleReader, ClientAuthMethod


def main():
 if len(sys.argv) <= 1 or len(sys.argv) > 3:
 print("Usage: %s username [password]" % (sys.argv[0]))
 return 1

 username = sys.argv[1]
 if len(sys.argv) == 2:
 sys.stderr.write('Password for %s: ' % username)
 password = raw_input()
 else:
 password = sys.argv[2]

 auth = ClientAuthMethod(username, password)
 reader = GoogleReader(auth)

 root = ET.Element('opml')
 head = ET.SubElement(root, 'head')
 ET.SubElement(head, 'title').text = \
 '%s subscriptions in Google Reader' % username
 body = ET.SubElement(root, 'body')

 category_els = {}

 reader.buildSubscriptionList()
 for feed in reader.getSubscriptionList():
 if feed.getCategories():
 for category in feed.getCategories():
 # Create category element
 if not category.id in category_els:
 category_el = ET.SubElement(body, 'outline')
 category_el.set('text', category.label)
 category_el.set('title', category.label)
 category_els[category.id] = category_el
 make_feed_el(feed, category_els[category.id])
 else:
 make_feed_el(feed, body)

 tree = ET.ElementTree(root)
 tree.write(sys.stdout, xml_declaration=True)


def make_feed_el(feed, parent):
 feed_el = ET.SubElement(parent, 'outline')
 feed_el.set('text', feed.title)
 feed_el.set('title', feed.title)
 feed_el.set('type', 'rss')
 feed_el.set('xmlUrl', feed.feedUrl)
 # seems to be always empty; possible a bug in libgreader?
 feed_el.set('htmlUrl', feed.siteUrl or '')


if __name__ == '__main__':
 sys.exit(main() or 0)