def _parse_tagfile(filename, function):
pdict = {}
if filename[-3:] == '.gz':
tagfile = gunzip(filename)
elif filename[-4:] == '.bz2':
tagfile = bunzip(filename)
else:
tagfile = file(filename)
parser = TagFile(tagfile)
while parser.Step():
k, v = function(parser.Section)
pdict[k] = v
return pdict
