#!/usr/bin/python
# -*- coding: utf-8 -*-
# vim: fileencoding=utf-8

import os , sys

DIR_NAME = 'C:\\Program Files\\'
OUTPUT_NAME = 'result_file_encoding_list.txt'

TARGET_ENCODING_LIST = [
    'utf-8',
    'shift-jis',
    'euc-jp',
    'iso2022-jp'
]

FLAG_STDOUT = True
#FLAG_STDOUT = False

import os, sys

write = sys.stdout.write

def guess_charset(data):
    file = lambda d, encoding: d.decode(encoding) and encoding
    for enc in TARGET_ENCODING_LIST:
        try:
            file(data, enc)
            return enc
        except:
            pass
    return 'binary'

out = open(OUTPUT_NAME, 'w')
for dirpath, dirs, files in os.walk(DIR_NAME):
    for fn in files:
        path = os.path.join(dirpath, fn)
        fobj = file(path, 'rU')
        data = fobj.read()
        fobj.close()
        try:
            enc = guess_charset(data)
        except:
            continue
        str = path + ',' + enc + '\n'
        try:
            if FLAG_STDOUT == True:
                write(str)
            out.write(str)
        except:
            continue