#!/usr/bin/python
import urllib, re
from xml.sax.saxutils import escape

url = 'http://www.keithba.net/blog/' 
file = '/home/rubys/web/intertwingly.net/synfeeds/keithba.rss'

try:
  page=urllib.urlopen(url).read()
except IOError:
  page=''
except AssertionError:
  # I don't understand this, but...
  page=''

rss="""<?xml version="1.0" encoding="iso-8859-1"?>
<rss version="0.91">
  <channel>
    <title>KeithBa's Blog</title>
    <link>http://www.keithba.net/blog/</link>
    <description>An RSS feed kindly donated by Sam Ruby</description>
    <language>en-us</language>
"""

pattern = re.compile('<a name="\d+">&nbsp;</a><br>\s+(.*?)\s+<br><br>\s+<font color="#\d+" size="-2"><a href="(.*?)">',re.S)

for (description, link) in pattern.findall(page):
	rss+="\n<item>\n<link>%s%s</link>\n<description>%s</description>\n</item>" % (url, link, escape(description))

rss+="""
  </channel>
</rss>
"""

if page and rss<>open(file).read():
  fh=open(file,'w')
  fh.write(rss) 
  fh.close()