#!/usr/bin/python
"""
 Exercise 13, page 380 of Zelle's "Intro Python"
 Jim Mahoney, Nov 6 2006

 This one uses the playing_card.py to define the card itself.
"""

from playing_card import Playing_Card

def compare(card1, card2):
    """ sort cards first by rank, then by suit """
    if card1.getRank() != card2.getRank():
        return cmp(card1.getRank(), card2.getRank())
    else:
        return cmp(card1.getSuit(), card2,getSuit())

class Card_Stack:
    """ A stack of cards. """

    def __init__( self, string='', filename='' ):
        """ Create a stack from a string or (if no string is given) a file,
            or (if neither is given), return an empty stack.
            Each card is given by a rank and suit separated by a space,
            i.e. '1 s' for the ace of spades.
            The cards in the input may be separated by commas or newlines. """
        if string:
            lines = string.split("/n")
        elif filename:
            lines = open(filename,'r').readlines()
        else:
            lines = []
        self.cards = []
        for line in lines:                             # e.g. line = '1 s, 2 d, 3 c'
            for rank_suit in line.split(','):          # e.g. rank_suit = '1 s'
                rank_suit_tuple = rank_suit.split()    # e.g. ('1', 's')
                if len(rank_suit_tuple)==2:
                    (rank, suit) = rank_suit.split()   # e.g. rank='1', suit='s'
                    self.cards.append( Playing_Card(int(rank), suit) )

    def __str__(self):
        card_strings = []
        for card in self.cards:
            card_strings.append(str(card))
        return ', '.join(card_strings)

                
    def sort(self):
        self.cards.sort(compare)


print Card_Stack('1 s, 2 d, 3 c')
a = Card_Stack(filename='cards.txt')
print a
a.sort()
print a