Find files with an emblem in Gnome

With the desktop on Ubuntu Linux (indeed, with any Gnome desktop) it’s possible to add emblems to any file. An emblem is a little reminder, a small icon that appears on top of the file. Think of it as a tag, perhaps, in this Web 2.0 world. The 'Sam presents' file has a 'money' emblem. Anyway, I needed a way of establishing which files had a particular emblem from a script. So here’s such a script. Call as follows:

aquarius@giles:~$ python money
/home/aquarius/Sam presents

The actual script is:

import re, glob, sys, urllib, os
from xml.dom import minidom

def grep(pattern, files):
  search = re.compile(pattern).search
  matches = []
  for file in files:
    for index, line in enumerate(open(file)):
      if search(line):
  return matches

def findEmblemedFiles(emblem):
  metafilesWithKeyword = grep('<keyword ', 
  retfiles = []
  for dirxmlfile in metafilesWithKeyword:
    dom = minidom.parse(dirxmlfile)
    filenodes = [x.parentNode.getAttribute('name') 
                 for x in dom.getElementsByTagName('keyword')
                 if x.getAttribute("name") == emblem]
    files = dict([(x,'') for x in filenodes]).keys()
    # turn /home/foo/.nautilus/metafiles/file:%2F%2F%2Fhome%2Ffoo%2FWork.xml
    # into /home/foo/Work/
    dirname = urllib.unquote(os.path.split(dirxmlfile)[1])[7:-4] + '/' 
    retfiles += [os.path.join(dirname,urllib.unquote(f)) for f in files]
  return retfiles

if __name__ == "__main__":
  print 'n'.join(findEmblemedFiles(sys.argv[1]))

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