B
    -[                 @   s   d dl Z d dlZd dlZddlmZ ddlmZ dddZd	d
 Zdd Z	ej
ej d dZedZejZejZdd Zdd ZdS )    N   )	text_type)BadDatautf-8strictc             C   s   t | tr| ||} | S )N)
isinstancer   encode)sencodingerrors r   4lib/python3.7/site-packages/itsdangerous/encoding.py
want_bytes	   s    
r   c             C   s   t | } t| dS )z^Base64 encode a string of bytes or text. The resulting bytes are
    safe to use in URLs.
       =)r   base64Zurlsafe_b64encoderstrip)stringr   r   r   base64_encode   s    r   c          	   C   sT   t | ddd} | dt|  d  7 } y
t| S  ttfk
rN   tdY nX dS )zOBase64 decode a URL-safe string of bytes or text. The result is
    bytes.
    asciiignore)r
   r   r      zInvalid base64-encoded dataN)r   lenr   Zurlsafe_b64decode	TypeError
ValueErrorr   )r   r   r   r   base64_decode   s    
r   z-_=r   z>Qc             C   s   t | dS )N    )_int_to_byteslstrip)Znumr   r   r   int_to_bytes,   s    r   c             C   s   t | ddd S )N   r   r   )_bytes_to_intrjust)Zbytestrr   r   r   bytes_to_int0   s    r"   )r   r   )r   r   ZstructZ_compatr   excr   r   r   r   Zascii_lettersZdigitsr   Z_base64_alphabetZStructZ_int64_structZpackr   Zunpackr    r   r"   r   r   r   r   <module>   s   

