"""Doc String"""

import string

t_t=['',]*256
for i in range(256):
    if i < 48 or 57 < i < 65 or 90 < i < 97 or 122<i<127: t_t[i] = ' '
    #One can control which char will be treated as white space in the 
    #above line.
    else: t_t[i]= chr(i)
tt=string.join(t_t,'')


translate = string.translate
split = string.split
find = string.find

class Splitter:
        """Doc String"""

        def __init__(self, insrc, stop_word_dic={}):

                self.isrc = translate(insrc, tt)
                tempsrc = split(self.isrc, ' ')
                stop_words = stop_word_dic.keys()
                xx=[]
                llen=len
                lower = string.lower
                for x in tempsrc:
                        if x and llen(x) > 1 and not x in stop_words : xx.append(lower(x))
                self.src = xx


        def __getslice__(self, a, b):
                return self.src[a:b]

        def __getitem__(self, a):
                return self.src[a]

        def __len__(self):
                return len(self.src)

        def indexes(self, a):
                res =[]
                for i in range(len(self)):
                        if self[i]==a:
                                res.append(i)
                return res

        def pos(self, a):
                i = int(a/2)
                x = find(self.isrc, self[i])
                return (x, x+len(self[i]) )