# ORDINAL - last updated for NodeBox 1rc7

# Author: Tom De Smedt <tomdesmedt@organisms.be>

# See LICENSE.txt for details.

# Based on the Ruby Linguistics module by Michael Granger:

# http://www.deveiate.org/projects/Linguistics/wiki/English

ordinal_nth = {

0 : "th",

1 : "st",

2 : "nd",

3 : "rd",

4 : "th",

5 : "th",

6 : "th",

7 : "th",

8 : "th",

9 : "th",

11 : "th",

12 : "th",

13 : "th",

}

ordinal_suffixes = [

["ty$" , "tieth"],

["one$" , "first"],

["two$" , "second"],

["three$" , "third"],

["five$" , "fifth"],

["eight$" , "eighth"],

["nine$" , "ninth"],

["twelve$", "twelfth"],

["$" , "th"],

]

def ordinal(number):

""" Returns the ordinal word of a given number.

For example: 103 -> 103rd, twenty-one -> twenty first.

The given number can be either integer or string,

returns None otherwise.

"""

if isinstance(number, int):

if number%100 in ordinal_nth:

return str(number) + ordinal_nth[number%100]

else:

return str(number) + ordinal_nth[number%10]

if isinstance(number, str):

import re

for suffix, inflection in ordinal_suffixes:

if re.search(suffix, number) is not None:

return re.sub(suffix, inflection, number)

#print ordinal(103)

#print ordinal("twenty-one")