๓
jทร^c           @@  sด   d  d l  m Z d  d l m Z d d l m Z m Z d d l m Z d Z	 y d  d l
 Z Wn e k
 ro n Xe	 d 7Z	 e   Z d d d d d d d	  Z d
   Z d   Z d S(   i    (   t   absolute_import(   t	   b64encodei   (   t   bt   integer_types(   t   UnrewindableBodyErrors   gzip,deflateNs   ,brc         C@  s็   i  } | rR t  | t  r n' t  | t  r? d j |  } n t } | | d <n  | re | | d <n  |  rx d | d <n  | rค d t t |   j d  | d <n  | rะ d t t |   j d  | d	 <n  | rใ d
 | d <n  | S(   s  
    Shortcuts for generating request headers.

    :param keep_alive:
        If ``True``, adds 'connection: keep-alive' header.

    :param accept_encoding:
        Can be a boolean, list, or string.
        ``True`` translates to 'gzip,deflate'.
        List will get joined by comma.
        String will be used as provided.

    :param user_agent:
        String representing the user-agent you want, such as
        "python-urllib3/0.6"

    :param basic_auth:
        Colon-separated username:password string for 'authorization: basic ...'
        auth header.

    :param proxy_basic_auth:
        Colon-separated username:password string for 'proxy-authorization: basic ...'
        auth header.

    :param disable_cache:
        If ``True``, adds 'cache-control: no-cache' header.

    Example::

        >>> make_headers(keep_alive=True, user_agent="Batman/1.0")
        {'connection': 'keep-alive', 'user-agent': 'Batman/1.0'}
        >>> make_headers(accept_encoding=True)
        {'accept-encoding': 'gzip,deflate'}
    t   ,s   accept-encodings
   user-agents
   keep-alivet
   connections   Basic s   utf-8t   authorizations   proxy-authorizations   no-caches   cache-control(   t
   isinstancet   strt   listt   joint   ACCEPT_ENCODINGR   R   t   decode(   t
   keep_alivet   accept_encodingt
   user_agentt
   basic_autht   proxy_basic_autht   disable_cachet   headers(    (    s1   site-packages/pip/_vendor/urllib3/util/request.pyt   make_headers   s*    *&c         C@  sk   | d k	 r t |  |  nK t |  d d  d k	 rg y |  j   } Wqg t t f k
 rc t } qg Xn  | S(   s   
    If a position is provided, move file to that point.
    Otherwise, we'll attempt to record a position for future use.
    t   tellN(   t   Nonet   rewind_bodyt   getattrR   t   IOErrort   OSErrort   _FAILEDTELL(   t   bodyt   pos(    (    s1   site-packages/pip/_vendor/urllib3/util/request.pyt   set_file_positionZ   s    c         C@  s   t  |  d d  } | d k	 rd t | t  rd y | |  Wq t t f k
 r` t d   q Xn1 | t k r t d   n t d t	 |    d S(   sๆ   
    Attempt to rewind body to a certain position.
    Primarily used for request redirects and retries.

    :param body:
        File-like object that supports seek.

    :param int pos:
        Position to seek to in file.
    t   seeksA   An error occurred when rewinding request body for redirect/retry.sR   Unable to record file position for rewinding request body during a redirect/retry.s4   body_pos must be of type integer, instead it was %s.N(
   R   R   R   R   R   R   R   R   t
   ValueErrort   type(   R   t   body_post	   body_seek(    (    s1   site-packages/pip/_vendor/urllib3/util/request.pyR   l   s    (   t
   __future__R    t   base64R   t   packages.sixR   R   t
   exceptionsR   R   t   brotlit   _unused_module_brotlit   ImportErrort   objectR   R   R   R   R   (    (    (    s1   site-packages/pip/_vendor/urllib3/util/request.pyt   <module>   s$   
	B	