Say number due to language specific rules import re import os import s

"""Say number due to language specific rules"""
import re
import os
import sys

from itertools import imap
class Action:
    """Bogus action, does nothing"""
    def __init__(self):
        """Bogus init"""
        pass
    def act(self, number, ruletable):
        """Does nothing"""
        pass

class WriteAction:
    """The simplest action, yields param with which it was constructed"""
    def __init__(self, what):
        """Saves what for future use"""
        self.what = what
    def act(self, _number, _ruletable):
        """Yields previously saved param"""
        yield self.what

class NumberAction:
    """Yields number constructed from source number and additional suffix"""
    def __init__(self, index, num):
        """Saves index and num for future use.
        
        index -- index of char, that should be extracted from number
        num -- additional suffix
        """
        self.index = index
        self.num = num
    def act(self, number, _ruletable):
        """Yields char extracted from source number concatenated with suffix
        """
        yield number[int(self.index)] + self.num

class RecursiveAction:
    """Does recursive processing of number, constructed from list of indexes
       and additional suffix"""
    def __init__(self, indexes, num):
        """Saves indexes and num for future use.
        
        indexes -- list of indexes, that should be used for extracting chars from number
        num -- additional suffix
        """
        self.indexes = indexes
        self.num = num
    def act(self, number, ruletable):
        """Recursively parses constructed number with same rules"""
        for x in ruletable.parse(''.join(imap (lambda x:number[int(x)],
                                              self.indexes)) + self.num):
            yield x
            
class RuleTable:
    """Holds rules, provides ability to add new rules from string
       representation and ability for parsing numbers"""
    def __init__(self, lines):
        """Uses lines for rules creation"""
        self.rules = []
        self.recreate(lines)
    def recreate(self, lines):
        """Parses lines and creates internal representation of rules and 
           actions"""
        self.rules = []
        for x in lines:
            left, right = x.split(':', 1)
            expr = re.compile('^' + left + '$')
            action_list = right.split(';')
            actions = []
            for y in action_list:
                action = None
                if y[:9] == 'recursive':
                    params = y[10:-1].split('|', 1)
                    if len(params) == 1:
                        action = RecursiveAction(params[0].split(','), '')
                    else:
                        action = RecursiveAction(params[0].split(','),
                                                 params[1])
                elif y[:6] == 'number':
                    params = y[7:-1].split('|', 1)
                    if len(params)==1:
                        action = NumberAction(params[0], '')
                    else:
                        action = NumberAction(params[0], params[1])
                else:
                    action = WriteAction(y)
                actions.append(action)
            self.rules.append((expr, actions))
    def parse(self, number):
        """Parses numbers and yields fundamental parts of number"""
        for (pattern, actions) in self.rules:
            if pattern.match(number):
                for x in actions:
                    for y in x.act(number, self):
                        yield y
                return

def main():
    """Main function"""
    if len(sys.argv) < 3:
        sys.exit(0)

    conf_file = os.path.normpath(os.path.dirname(__file__)) + '/'+sys.argv[2]
    lines = open(conf_file,'r').readlines()
    ruletable = RuleTable(imap(lambda x: x.strip(), lines))

    try:
        while True:
            x = raw_input()
            if not x.strip():
                break
    except:
        pass

    sys.stdout.write('EXEC NOOP StartPySayNum\n')

    playstr = ''
    for x in ruletable.parse(sys.argv[1]):
        if playstr:
            playstr += '&'
        playstr += 'digits/%s' % (x,)
    sys.stdout.write('EXEC PLAYBACK ' + playstr)
    sys.stdout.flush()
    x = raw_input()

if __name__ == "__main__":
    main()