simple decoding tool

enc.bat

@echo off
python %~dp0\enc.py %*

enc.py

import sys

if len(sys.argv) != 2:
    print('USAGE: python .py file', file=sys.stderr)
    sys.exit(1)

#
filename = sys.argv[1]
with open(filename, mode='rb') as fin:
    raw_data = fin.read()

code = 'utf-8'
if raw_data[:3] == b'\xef\xbb\xbf':     # BOM
    code = 'utf-8-sig'

print(raw_data.decode(code))