#! python3
# -*- coding: utf-8 -*-

' utf8togbk '

__author__ = 'guanjianhe'

import sys


def utf8togbk(file):
    content = ''
    try:
        # 以utf-8编码读取
        with open(file, 'r', encoding='utf-8') as fp:
            content = fp.read()

    # 解码错误，则说明不是以utf-8编码，啥都不干
    except UnicodeDecodeError:
        sys.exit()

    else:  # 执行到这里，说明是以utf-8编码，则写入的时候以gbk编码写入
        with open(file, 'w', encoding='gbk') as fp:
            fp.write(content)


if __name__ == '__main__':
    # 这边参数只能有2个，一个是本脚本的参数，另外一个是要转换的文件路径
    if len(sys.argv) == 2:
        utf8togbk(sys.argv[1])
    else:
        pass