#!/usr/bin/env python
# coding=utf8
# ===============================================================================
#   Copyright (C) 2018 www.361way.com site All rights reserved.
#   Filename      ：convert.py
#   Author        ：yangbk <itybku@139.com>
#   Create Time   ：2017-08-15 10:41
#   Description   ：bin oct dec hex convert （进制转换）
# ===============================================================================
'''
bin 二进制
oct 八进制
dec 十进制
hex 十六进制
--------------------
>>> hex(10)
'0xa'
>>> oct(8) 
'010'
>>> oct(10)
'012'
>>> bin(10)
'0b1010'
>>> int('0xa',16)
10
>>> int('010',8) 
8
>>> int('0b1010',2)
10
>>> int('0xA',16)  
10
'''

import os,sys

# global definition
# base = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F]
base = [str(x) for x in range(10)] + [ chr(x) for x in range(ord('A'),ord('A')+6)]

# bin2dec
# 二进制 to 十进制: int(str,n=10) 
def bin2dec(string_num):
    return str(int(string_num, 2))

# hex2dec
# 十六进制 to 十进制
def hex2dec(string_num):
    return str(int(string_num.upper(), 16))

# dec2bin
# 十进制 to 二进制: bin() 
def dec2bin(string_num):
    num = int(string_num)
    mid = []
    while True:
        if num == 0: break
        num,rem = divmod(num, 2)
        mid.append(base[rem])

    return ''.join([str(x) for x in mid[::-1]])

# dec2hex
# 十进制 to 八进制: oct() 
# 十进制 to 十六进制: hex() 
def dec2hex(string_num):
    num = int(string_num)
    mid = []
    while True:
        if num == 0: break
        num,rem = divmod(num, 16)
        mid.append(base[rem])

    return ''.join([str(x) for x in mid[::-1]])

# hex2tobin
# 十六进制 to 二进制: bin(int(str,16)) 
def hex2bin(string_num):
    return dec2bin(hex2dec(string_num.upper()))

# bin2hex
# 二进制 to 十六进制: hex(int(str,2)) 
def bin2hex(string_num):
    return dec2hex(bin2dec(string_num))
