collate/_abcollator.py

   1 import collate._strings
   2
   3 class Collator(object):
   4     def cmp(self, string1, string2):
   5         """Return negative if a < b, zero if a == b, positive if a > b."""
   6         return cmp(self.key(string1), self.key(string2))
   7
   8     def words(self, string):
   9         """Split the string into separate words.
  10
  11         This split is done using Unicode's definition of whitespace.
  12         """
  13         return string.split()
  14
  15     def sortemes(self, string):
  16         return collate._strings.alnumsplit(string)
  17
  18     def sortemekey(self, string, invalid=float('inf')):
  19         words = []
  20         for sorteme in self.sortemes(string):
  21             num, alpha = collate._strings.numeric(sorteme, invalid)
  22             alpha = self.key(collate._strings.strip_punc(alpha))
  23             words.append((num, alpha))
  24         return words