图片>>base64>>二进制文本 转换

pic_bin.py

#coding=utf-8
__author__ = 'beginman'
__describe__ = '图片>>base64>>二进制文本 转换'

import binascii
import re

def pic2bin(data):
    b64 = binascii.b2a_base64(data)
    j = 0
    f = open('data.txt', 'w')
    for i in b64:
        # hex to int to bin then padding '0' for 8 digit
        bins = bin(int(binascii.b2a_hex(i), 16))[2:].rjust(8, '0')
        handle_bins = "".join([bins, " "])
        f.write(handle_bins)
        j += 1
        if j % 6 == 0:      # every row with 6 cols, every col with 8 digit
            f.write('\n')
    f.close()


def bin2pic(data):
    result = re.split(r'[ \n]', data)   # 按照能够匹配的子串将string分割后返回列表
    b64 = ""
    for i in result:
        if i:
            # binary to int to hex then padding '0' for 2 digit
            hex_src = str(hex(int(i, 2)))[2:].rjust(2, "0")
            # 16进制转ascii码
            b64 = "".join([b64, binascii.a2b_hex(hex_src)])

    bin_data = binascii.a2b_base64(b64)
    f = open("new.png", 'wb')
    f.write(bin_data)
    f.close()


def main():
    f = open("test.png", "rb")
    data = f.read()
    pic2bin(data)
    f.close()

    f = open("data.txt")
    data = f.read()
    bin2pic(data)
    f.close()

if __name__ == "__main__":
    main()