+def __mkpatchname(name, suffix):
+ if name.lower().endswith(suffix.lower()):
+ return name[:-len(suffix)]
+ return name
+
+def __get_handle_and_name(filename):
+ """Return a file object and a patch name derived from filename
+ """
+ # see if it's a gzip'ed or bzip2'ed patch
+ import bz2, gzip
+ for copen, ext in [(gzip.open, '.gz'), (bz2.BZ2File, '.bz2')]:
+ try:
+ f = copen(filename)
+ f.read(1)
+ f.seek(0)
+ return (f, __mkpatchname(filename, ext))
+ except IOError, e:
+ pass
+
+ # plain old file...
+ return (open(filename), filename)
+