#!/usr/bin/python20
''' Braille-Applikation '''
class Braille:
        ''' Brailleklasse
        Synopsis:	sys.path.append("h:\\sc\\Python")
			import braille
			m = braille.Braille()
			m.str2br("Hallo Welt") '''
       
        def __init__(self):
                ''' Anlegen Klassenbezeichner '''
		import string
                self.code = "8ACD9EFB67"
                self.sgn = {}
                self.sgn["w"] = ".OOO.O"
                self.sgn[" "]  = "......"  #Fehlt: Leertaste
                for i in range(26):
		    if i <> 22:       #   "w" = 22
                        letter = string.letters[i]
                        r = self.itob(int(self.code[i%10],16))
                        r = r + self.itob((0,2,3)[int(i/10)]+4)[1:]
                        self.sgn[letter] = r
        def itob(self,i, b = "", chars=".O"):
                ''' Binaerumwandlung '''
                while i > 0:
                        b = chars[i%2] + b
                        i /= 2
                return b
        def str2br(self, txt=""):
                ''' Wandle Text in Braillezeichen um '''
                import re
                for i in txt.lower():
			print i
                        # insert linebreak after every 2nd sign
		        print re.sub("(..)","\g<1>\n", self.sgn[i])+"\n",