#!/usr/bin/python

import sys, os

class WC :
    """"word count class"""
    def getWords(self, data):
        noise = ['\n', '\t', ',', '.', ';', ':', '-', '!', '?', '*', '(', ')', '{', '}', '[', ']', '|']
        for char in noise :
            data = data.replace(char, ' ')
        return data.split()

    def words(self, data) :
        return len(self.getWords(data))

    def strings(self, data) :
        return len(data.split('\n')) - 1

    def wordsDuplicates(self, data) :
        unique = {}
        for word in self.getWords(data) :
            if word in unique :
                unique[word] += 1
            else :
                unique[word] = 1
        return unique

    def bytes(self, data) :
        return sys.getsizeof(data)

keysAvailable = {
    "-l": 'strings',
    "-w": "words",
    "-W": "wordsDuplicates",
    "-b": "bytes"
}

arguments = sys.argv
arguments.pop(0)

keys = list(filter((lambda x: x.startswith("-")), sys.argv))
args = list(filter((lambda x: not x.startswith("-")), sys.argv))

if (len(args) != 1 ) :
    sys.exit("invalid arguments count");

filename = args[0]

if (os.path.exists(filename)) :
    try :
        with open(filename, 'r') as fo :
            data = fo.read()
    except IOError :
        sys.exit("Could not read file " + filename)
    finally :
        fo.close()
else :
    sys.exit("No such file " + filename)

wc = WC()

for key in keys :
    if key in keysAvailable :
        method = getattr(wc, keysAvailable.get(key))
        result = method(data)
        print(keysAvailable.get(key) + ': ' + str(result))