U
    ƒIÀd´‚  ã                   @   sò  d Z ddlZddlZddlZddlZddlZddlZddlZddlZddl	Z	ddl
Z
ddlZddlmZ ddlmZmZ ddlmZ ddlmZ ddlmZmZmZmZ dd	lmZmZmZmZmZmZ dd
lm Z! ddlm"Z"m#Z#m$Z$m%Z%m&Z&m'Z'm(Z( ddl)m*Z* ddl+m,Z,m-Z-m.Z.m/Z/ ddl0m1Z1 dZ2e 3¡ Z4dddœZ5d 6e 7dedd�d ¡¡Z8ej9dk�rvdd„ Z:dd„ Z"dd„ Z;dd „ Z<dtd"d#„Z=d$d%„ Z>d&d'„ Z?ej@d(d)„ ƒZAd*d+„ ZBd,d-„ ZCd.d/„ ZDd0d1„ ZEdud2d3„ZFd4d5„ ZGd6d7„ ZHd8d9„ ZId:d;„ ZJd<d=„ ZKd>d?„ ZLd@dA„ ZMdBdC„ ZNeOdDƒZPdEdF„ ZQdGdH„ ZRdIdJ„ ZSdKdL„ ZTdMdN„ ZUdOdP„ ZVej@dQdR„ ƒZWdSdT„ ZXdvdUdV„ZYdWdX„ ZZdwdYdZ„Z[dxd\d]„Z\d^d_„ Z]d`da„ Z^db _dc¡Z`e`dd Zae`de Zbdfdg„ Zcdhdi„ Zddjdk„ Zedldm„ Zfdndo„ Zgdpdq„ Zhdrds„ ZidS )yz”
requests.utils
~~~~~~~~~~~~~~

This module provides utility functions that are used within Requests
that are also useful for external consumption.
é    N)ÚOrderedDict)Úmake_headersÚ	parse_urlé   )Úcerts©Ú__version__)Ú_HEADER_VALIDATORS_BYTEÚ_HEADER_VALIDATORS_STRÚHEADER_VALIDATORSÚto_native_string)ÚMappingÚ
basestringÚbytesÚ
getproxiesÚgetproxies_environmentÚinteger_types)Úparse_http_list)Úproxy_bypassÚproxy_bypass_environmentÚquoteÚstrÚunquoteÚurlparseÚ
urlunparse©Úcookiejar_from_dict)ÚFileModeWarningÚInvalidHeaderÚ
InvalidURLÚUnrewindableBodyError)ÚCaseInsensitiveDict)z.netrcÚ_netrcéP   i»  )ÚhttpÚhttpsz, z,\s*T)Úaccept_encodingzaccept-encodingÚwin32c              	   C   sê   zdd l }W n tk
r"   Y dS X z6| |jd¡}t| |d¡d ƒ}| |d¡d }W n ttfk
rt   Y dS X |r~|s‚dS | d¡}|D ]T}|dkrªd| krª d	S | 	dd
¡}| 	dd¡}| 	dd¡}t
 || t
j¡r� d	S q�dS )Nr   Fz;Software\Microsoft\Windows\CurrentVersion\Internet SettingsZProxyEnableZProxyOverrideú;z<local>Ú.Tz\.Ú*z.*ú?)ÚwinregÚImportErrorÚOpenKeyÚHKEY_CURRENT_USERÚintÚQueryValueExÚOSErrorÚ
ValueErrorÚsplitÚreplaceÚreÚmatchÚI)Úhostr,   ZinternetSettingsZproxyEnableZproxyOverrideÚtest© r;   úS/home/sam/Atlas/atlas_env/lib/python3.8/site-packages/pip/_vendor/requests/utils.pyÚproxy_bypass_registryL   s4    þ
r=   c                 C   s   t ƒ rt| ƒS t| ƒS dS )zšReturn True, if the host should be bypassed.

        Checks proxy settings gathered from the environment, if specified,
        or the registry.
        N)r   r   r=   )r9   r;   r;   r<   r   p   s    r   c                 C   s   t | dƒr|  ¡ } | S )z/Returns an internal sequence dictionary update.Úitems)Úhasattrr>   )Údr;   r;   r<   Údict_to_sequence|   s    
rA   c              	   C   s0  d }d}t | dƒrt| ƒ}nft | dƒr.| j}nTt | dƒr‚z|  ¡ }W n tjtfk
r^   Y n$X t |¡j}d| j	kr‚t
 dt¡ t | dƒ�rz|  ¡ }W n  tk
rº   |d k	r¶|}Y nZX t | dƒ�r|d k�rz&|  dd	¡ |  ¡ }|  |pòd¡ W n tk
�r   d}Y nX |d k�r"d}td|| ƒS )
Nr   Ú__len__ÚlenÚfilenoÚba%  Requests has determined the content-length for this request using the binary size of the file: however, the file has been opened in text mode (i.e. without the 'b' flag in the mode). This may lead to an incorrect content-length. In Requests 3.0, support will be removed for files in text mode.ÚtellÚseeké   )r?   rC   rD   ÚioÚUnsupportedOperationÚAttributeErrorÚosÚfstatÚst_sizeÚmodeÚwarningsÚwarnr   rF   r2   rG   Úmax)ÚoÚtotal_lengthÚcurrent_positionrD   r;   r;   r<   Ú	super_len…   sB    




÷


rV   Fc              	   C   sL  t j d¡}|dk	r|f}ndd„ tD ƒ}�z ddlm}m} d}|D ]D}zt j |¡}W n tk
rt   Y  W dS X t j 	|¡rF|} qŒqF|dkršW dS t
| ƒ}	d}
t| tƒrº|
 d¡}
|	j |
¡d }z<||ƒ |¡}|�r|d rìdnd	}|| |d
 fW W S W n" |tfk
�r(   |�r$‚ Y nX W n ttfk
�rF   Y nX dS )z;Returns the Requests tuple auth for a given url from netrc.ÚNETRCNc                 s   s   | ]}d |› �V  qdS )z~/Nr;   )Ú.0Úfr;   r;   r<   Ú	<genexpr>Î   s     z!get_netrc_auth.<locals>.<genexpr>r   )ÚNetrcParseErrorÚnetrcó   :Úasciir   rH   )rL   ÚenvironÚgetÚNETRC_FILESr\   r[   ÚpathÚ
expanduserÚKeyErrorÚexistsr   Ú
isinstancer   ÚdecodeÚnetlocr4   Úauthenticatorsr2   r-   rK   )ÚurlÚraise_errorsÚ
netrc_fileÚnetrc_locationsr[   r\   Ú
netrc_pathrY   ÚlocÚriÚsplitstrr9   r"   Úlogin_ir;   r;   r<   Úget_netrc_authÇ   s@    

rs   c                 C   sB   t | ddƒ}|r>t|tƒr>|d dkr>|d dkr>tj |¡S dS )z0Tries to guess the filename of the given object.ÚnameNr   ú<éÿÿÿÿú>)Úgetattrrf   r   rL   rb   Úbasename)Úobjrt   r;   r;   r<   Úguess_filename   s    &r{   c              	   C   sÒ   t j | ¡r| S t j | ¡\}}|rVt j |¡sVt j |¡\}}|sFqVd ||g¡}q t |¡sd| S t |¡}|| ¡ kr~| S t	 
¡ }t j || d¡d ¡}t j |¡sÎt|ƒ�}| | |¡¡ W 5 Q R X |S )zÄReplace nonexistent paths that look like they refer to a member of a zip
    archive with the location of an extracted copy of the target, or else
    just return the provided path unchanged.
    ú/rv   )rL   rb   re   r4   ÚjoinÚzipfileÚ
is_zipfileÚZipFileÚnamelistÚtempfileÚ
gettempdirÚatomic_openÚwriteÚread)rb   ÚarchiveÚmemberÚprefixÚzip_fileÚtmpÚextracted_pathÚfile_handlerr;   r;   r<   Úextract_zipped_paths  s&    


rŽ   c              	   c   sl   t jtj | ¡d�\}}z.t |d¡�}|V  W 5 Q R X t || ¡ W n  tk
rf   t |¡ ‚ Y nX dS )z-Write a file to the disk in an atomic fashion)ÚdirÚwbN)	r‚   ÚmkstemprL   rb   ÚdirnameÚfdopenr5   ÚBaseExceptionÚremove)ÚfilenameÚtmp_descriptorÚtmp_nameÚtmp_handlerr;   r;   r<   r„   ,  s    
r„   c                 C   s.   | dkrdS t | ttttfƒr&tdƒ‚t| ƒS )a  Take an object and test to see if it can be represented as a
    dictionary. Unless it can not be represented as such, return an
    OrderedDict, e.g.,

    ::

        >>> from_key_val_list([('key', 'val')])
        OrderedDict([('key', 'val')])
        >>> from_key_val_list('string')
        Traceback (most recent call last):
        ...
        ValueError: cannot encode objects that are not 2-tuples
        >>> from_key_val_list({'key': 'val'})
        OrderedDict([('key', 'val')])

    :rtype: OrderedDict
    Nú+cannot encode objects that are not 2-tuples)rf   r   r   Úboolr0   r3   r   ©Úvaluer;   r;   r<   Úfrom_key_val_list9  s
    rž   c                 C   s@   | dkrdS t | ttttfƒr&tdƒ‚t | tƒr8|  ¡ } t| ƒS )aÂ  Take an object and test to see if it can be represented as a
    dictionary. If it can be, return a list of tuples, e.g.,

    ::

        >>> to_key_val_list([('key', 'val')])
        [('key', 'val')]
        >>> to_key_val_list({'key': 'val'})
        [('key', 'val')]
        >>> to_key_val_list('string')
        Traceback (most recent call last):
        ...
        ValueError: cannot encode objects that are not 2-tuples

    :rtype: list
    Nrš   )	rf   r   r   r›   r0   r3   r   r>   Úlistrœ   r;   r;   r<   Úto_key_val_listT  s    
r    c                 C   sX   g }t | ƒD ]F}|dd… |dd…   kr4dkrHn nt|dd… ƒ}| |¡ q|S )a  Parse lists as described by RFC 2068 Section 2.

    In particular, parse comma-separated lists where the elements of
    the list may include quoted-strings.  A quoted-string could
    contain a comma.  A non-quoted string could have quotes in the
    middle.  Quotes are removed automatically after parsing.

    It basically works like :func:`parse_set_header` just that items
    may appear multiple times and case sensitivity is preserved.

    The return value is a standard :class:`list`:

    >>> parse_list_header('token, "quoted value"')
    ['token', 'quoted value']

    To create a header from the :class:`list` again, use the
    :func:`dump_header` function.

    :param value: a string with a list header.
    :return: :class:`list`
    :rtype: list
    Nr   rv   ú")Ú_parse_list_headerÚunquote_header_valueÚappend)r�   ÚresultÚitemr;   r;   r<   Úparse_list_headerr  s    (r§   c                 C   sx   i }t | ƒD ]f}d|kr"d||< q| dd¡\}} | dd… | dd…   krVdkrjn nt| dd… ƒ} | ||< q|S )a^  Parse lists of key, value pairs as described by RFC 2068 Section 2 and
    convert them into a python dict:

    >>> d = parse_dict_header('foo="is a fish", bar="as well"')
    >>> type(d) is dict
    True
    >>> sorted(d.items())
    [('bar', 'as well'), ('foo', 'is a fish')]

    If there is no value for a key it will be `None`:

    >>> parse_dict_header('key_without_value')
    {'key_without_value': None}

    To create a header from the :class:`dict` again, use the
    :func:`dump_header` function.

    :param value: a string with a dict header.
    :return: :class:`dict`
    :rtype: dict
    ú=Nr   rv   r¡   )r¢   r4   r£   )r�   r¥   r¦   rt   r;   r;   r<   Úparse_dict_header’  s    (
r©   c                 C   s\   | rX| d | d   kr dkrXn n4| dd… } |rD| dd… dkrX|   dd¡  d	d¡S | S )
zçUnquotes a header value.  (Reversal of :func:`quote_header_value`).
    This does not use the real unquoting but what browsers are actually
    using for quoting.

    :param value: the header value to unquote.
    :rtype: str
    r   rv   r¡   r   NrH   z\\ú\z\")r5   )r�   Úis_filenamer;   r;   r<   r£   µ  s
    $r£   c                 C   s   i }| D ]}|j ||j< q|S )z€Returns a key/value dictionary from a CookieJar.

    :param cj: CookieJar object to extract cookies from.
    :rtype: dict
    )r�   rt   )ÚcjÚcookie_dictÚcookier;   r;   r<   Údict_from_cookiejarÎ  s    r¯   c                 C   s
   t || ƒS )zÂReturns a CookieJar from a key/value dictionary.

    :param cj: CookieJar to insert cookies into.
    :param cookie_dict: Dict of key/values to insert into CookieJar.
    :rtype: CookieJar
    r   )r¬   r­   r;   r;   r<   Úadd_dict_to_cookiejarÝ  s    r°   c                 C   sT   t  dt¡ tjdtjd�}tjdtjd�}t d¡}| | ¡| | ¡ | | ¡ S )zlReturns encodings from given content string.

    :param content: bytestring to extract encodings from.
    z¤In requests 3.0, get_encodings_from_content will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)z!<meta.*?charset=["\']*(.+?)["\'>])Úflagsz+<meta.*?content=["\']*;?charset=(.+?)["\'>]z$^<\?xml.*?encoding=["\']*(.+?)["\'>])rP   rQ   ÚDeprecationWarningr6   Úcompiler8   Úfindall)ÚcontentÚ
charset_reÚ	pragma_reÚxml_rer;   r;   r<   Úget_encodings_from_contentè  s    ú	
ÿþÿr¹   c           
      C   sš   |   d¡}|d  ¡ |dd…  }}i }d}|D ]`}| ¡ }|r0|d }}| d¡}	|	dkr„|d|	…  |¡}||	d d…  |¡}||| ¡ < q0||fS )	z¦Returns content type and parameters from given header

    :param header: string
    :return: tuple containing content type and dictionary of
         parameters
    r(   r   r   Nz"' Tr¨   rv   )r4   ÚstripÚfindÚlower)
ÚheaderÚtokensÚcontent_typeÚparamsÚparams_dictÚitems_to_stripÚparamÚkeyr�   Úindex_of_equalsr;   r;   r<   Ú_parse_content_type_header  s    


rÆ   c                 C   sP   |   d¡}|sdS t|ƒ\}}d|kr4|d  d¡S d|kr@dS d|krLdS dS )	z}Returns encodings from given HTTP Header Dict.

    :param headers: dictionary to extract encoding from.
    :rtype: str
    zcontent-typeNÚcharsetz'"Útextz
ISO-8859-1zapplication/jsonúutf-8)r`   rÆ   rº   )Úheadersr¿   rÀ   r;   r;   r<   Úget_encoding_from_headers  s    
rË   c                 c   sd   |j dkr| E dH  dS t |j ¡dd�}| D ]}| |¡}|r.|V  q.|jddd�}|r`|V  dS )zStream decodes an iterator.Nr5   ©Úerrorsó    T)Úfinal)ÚencodingÚcodecsÚgetincrementaldecoderrg   )ÚiteratorÚrÚdecoderÚchunkÚrvr;   r;   r<   Ústream_decode_response_unicode3  s    


rØ   c                 c   sH   d}|dks|dkrt | ƒ}|t | ƒk rD| ||| … V  ||7 }qdS )z Iterate over slices of a string.r   N)rC   )ÚstringÚslice_lengthÚposr;   r;   r<   Úiter_slicesD  s    rÜ   c                 C   s~   t  dt¡ g }t| jƒ}|rLzt| j|ƒW S  tk
rJ   | |¡ Y nX zt| j|dd�W S  t	k
rx   | j Y S X dS )zâReturns the requested content back in unicode.

    :param r: Response object to get unicode content from.

    Tried:

    1. charset from content-type
    2. fall back and replace all unicode characters

    :rtype: str
    z£In requests 3.0, get_unicode_from_response will be removed. For more information, please see the discussion on issue #2266. (This warning should only appear once.)r5   rÌ   N)
rP   rQ   r²   rË   rÊ   r   rµ   ÚUnicodeErrorr¤   Ú	TypeError)rÔ   Útried_encodingsrÐ   r;   r;   r<   Úget_unicode_from_responseN  s    ú	
rà   zBABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~c              	   C   sÌ   |   d¡}tdt|ƒƒD ]¨}|| dd… }t|ƒdkr®| ¡ r®ztt|dƒƒ}W n$ tk
rv   td|› d�ƒ‚Y nX |tkrš||| dd…  ||< qÀd|| › �||< qd|| › �||< qd	 	|¡S )
z¨Un-escape any percent-escape sequences in a URI that are unreserved
    characters. This leaves all reserved, illegal and non-ASCII bytes encoded.

    :rtype: str
    ú%r   r   rH   é   z"Invalid percent-escape sequence: 'ú'NÚ )
r4   ÚrangerC   ÚisalnumÚchrr0   r3   r   ÚUNRESERVED_SETr}   )ÚuriÚpartsÚiÚhÚcr;   r;   r<   Úunquote_unreserved{  s    
rî   c                 C   s@   d}d}zt t| ƒ|d�W S  tk
r:   t | |d� Y S X dS )z¬Re-quote the given URI.

    This function passes the given URI through an unquote/quote cycle to
    ensure that it is fully and consistently quoted.

    :rtype: str
    z!#$%&'()*+,/:;=?@[]~z!#$&'()*+,/:;=?@[]~)ÚsafeN)r   rî   r   )ré   Úsafe_with_percentÚsafe_without_percentr;   r;   r<   Úrequote_uri“  s    rò   c                 C   sl   t  dt | ¡¡d }| d¡\}}t  dt tt|ƒƒ¡¡d }t  dt |¡¡d |@ }||@ ||@ kS )zïThis function allows you to check if an IP belongs to a network subnet

    Example: returns True if ip = 192.168.1.1 and net = 192.168.1.0/24
             returns False if ip = 192.168.1.1 and net = 192.168.100.0/24

    :rtype: bool
    z=Lr   r|   )ÚstructÚunpackÚsocketÚ	inet_atonr4   Údotted_netmaskr0   )ÚipÚnetÚipaddrÚnetaddrÚbitsÚnetmaskÚnetworkr;   r;   r<   Úaddress_in_network©  s
    rÿ   c                 C   s&   ddd|  > d A }t  t d|¡¡S )z�Converts mask from /xx format to xxx.xxx.xxx.xxx

    Example: if mask is 24 function returns 255.255.255.0

    :rtype: str
    l   ÿÿ r   é    z>I)rõ   Ú	inet_ntoaró   Úpack)Úmaskrü   r;   r;   r<   r÷   ¸  s    r÷   c                 C   s*   zt  | ¡ W n tk
r$   Y dS X dS )z
    :rtype: bool
    FT)rõ   rö   r2   )Ú	string_ipr;   r;   r<   Úis_ipv4_addressÃ  s
    r  c                 C   sŠ   |   d¡dkr‚zt|  d¡d ƒ}W n tk
r:   Y dS X |dk sL|dkrPdS zt |  d¡d ¡ W q† tk
r~   Y dS X ndS dS )zV
    Very simple check of the cidr format in no_proxy variable.

    :rtype: bool
    r|   r   Fr   r   T)Úcountr0   r4   r3   rõ   rö   r2   )Ústring_networkr  r;   r;   r<   Úis_valid_cidrÎ  s    
r  c              	   c   sT   |dk	}|r"t j | ¡}|t j| < z
dV  W 5 |rN|dkrDt j| = n
|t j| < X dS )zÎSet the environment variable 'env_name' to 'value'

    Save previous value, yield, and then restore the previous value stored in
    the environment variable 'env_name'.

    If 'value' is None, do nothingN)rL   r_   r`   )Úenv_namer�   Úvalue_changedÚ	old_valuer;   r;   r<   Úset_environæ  s    


r  c           	   
   C   s*  dd„ }|}|dkr|dƒ}t | ƒ}|jdkr2dS |rÖdd„ | dd	¡ d
¡D ƒ}t|jƒr”|D ]0}t|ƒr€t|j|ƒr� dS q`|j|kr` dS q`nB|j}|jr°|d|j› �7 }|D ] }|j |¡sÎ| |¡r´ dS q´t	d|ƒ�6 zt
|jƒ}W n  ttjfk
�r   d}Y nX W 5 Q R X |�r&dS dS )zL
    Returns whether we should bypass proxies or not.

    :rtype: bool
    c                 S   s   t j | ¡pt j |  ¡ ¡S ©N)rL   r_   r`   Úupper)rÄ   r;   r;   r<   Ú	get_proxy  s    z(should_bypass_proxies.<locals>.get_proxyNÚno_proxyTc                 s   s   | ]}|r|V  qd S r  r;   )rX   r9   r;   r;   r<   rZ     s      z(should_bypass_proxies.<locals>.<genexpr>ú rä   ú,ú:F)r   Úhostnamer5   r4   r  r  rÿ   ÚportÚendswithr  r   rÞ   rõ   Úgaierror)	rj   r  r  Úno_proxy_argÚparsedÚproxy_ipÚhost_with_portr9   Úbypassr;   r;   r<   Úshould_bypass_proxiesü  s<    



r  c                 C   s   t | |d�ri S tƒ S dS )zA
    Return a dict of environment proxies.

    :rtype: dict
    ©r  N)r  r   )rj   r  r;   r;   r<   Úget_environ_proxies8  s    r  c                 C   st   |pi }t | ƒ}|jdkr.| |j| d¡¡S |jd |j |jd|j dg}d}|D ]}||krV|| } qpqV|S )z­Select a proxy for the url, if applicable.

    :param url: The url being for the request
    :param proxies: A dictionary of schemes or schemes and hosts to proxy URLs
    NÚallz://zall://)r   r  r`   Úscheme)rj   ÚproxiesÚurlpartsÚ
proxy_keysÚproxyÚ	proxy_keyr;   r;   r<   Úselect_proxyD  s    
ür'  c           	      C   st   |dk	r|ni }| j }t|ƒj}| d¡}| ¡ }|rpt||d�spt||d�}| || d¡¡}|rp| ||¡ |S )a¨  This method takes proxy information from a request and configuration
    input to resolve a mapping of target proxies. This will consider settings
    such a NO_PROXY to strip proxy configurations.

    :param request: Request or PreparedRequest
    :param proxies: A dictionary of schemes or schemes and hosts to proxy URLs
    :param trust_env: Boolean declaring whether to trust environment configs

    :rtype: dict
    Nr  r  r   )rj   r   r!  r`   Úcopyr  r  Ú
setdefault)	Úrequestr"  Ú	trust_envrj   r!  r  Únew_proxiesÚenviron_proxiesr%  r;   r;   r<   Úresolve_proxies^  s    

r.  úpython-requestsc                 C   s   | › dt › �S )zO
    Return a string representing the default user agent.

    :rtype: str
    r|   r   )rt   r;   r;   r<   Údefault_user_agenty  s    r0  c                   C   s   t tƒ tdddœƒS )z9
    :rtype: requests.structures.CaseInsensitiveDict
    z*/*z
keep-alive)z
User-AgentzAccept-EncodingÚAcceptÚ
Connection)r!   r0  ÚDEFAULT_ACCEPT_ENCODINGr;   r;   r;   r<   Údefault_headers‚  s    üÿr4  c           	   
   C   sÎ   g }d}|   |¡} | s|S t d| ¡D ]¢}z| dd¡\}}W n tk
r\   |d }}Y nX d|  d¡i}| d¡D ]F}z| d¡\}} W n tk
r¦   Y  q¾Y nX |   |¡||  |¡< qv| |¡ q&|S )	z¼Return a list of parsed link headers proxies.

    i.e. Link: <http:/.../front.jpeg>; rel=front; type="image/jpeg",<http://.../back.jpeg>; rel=back;type="image/jpeg"

    :rtype: list
    z '"z, *<r(   r   rä   rj   z<> '"r¨   )rº   r6   r4   r3   r¤   )	r�   ÚlinksÚreplace_charsÚvalrj   rÀ   ÚlinkrÃ   rÄ   r;   r;   r<   Úparse_header_links�  s&    
r9  ú r^   rH   é   c                 C   sÐ   | dd… }|t jt jfkr dS |dd… t jkr6dS |dd… t jt jfkrRdS | t¡}|dkrhd	S |dkrœ|ddd… tkr†d
S |ddd… tkrœdS |dkrÌ|dd… t	kr¸dS |dd… t	krÌdS dS )z
    :rtype: str
    Né   zutf-32r;  z	utf-8-sigrH   zutf-16r   rÉ   z	utf-16-ber   z	utf-16-lez	utf-32-bez	utf-32-le)
rÑ   ÚBOM_UTF32_LEÚBOM_UTF32_BEÚBOM_UTF8ÚBOM_UTF16_LEÚBOM_UTF16_BEr  Ú_nullÚ_null2Ú_null3)ÚdataÚsampleÚ	nullcountr;   r;   r<   Úguess_json_utf»  s*    
rH  c                 C   sl   t | ƒ}|\}}}}}}}	|j}
|
s.||
 }
}|r@d ||
g¡}
|dkrL|}|dkrXd}t||
|d||	fƒS )zªGiven a URL that may or may not have a scheme, prepend the given scheme.
    Does not replace a present scheme with the one provided as an argument.

    :rtype: str
    ú@Nrä   )r   rh   r}   r   )rj   Ú
new_schemer  r!  Úauthr9   r  rb   ÚqueryÚfragmentrh   r;   r;   r<   Úprepend_scheme_if_neededÛ  s    
rN  c              	   C   sB   t | ƒ}zt|jƒt|jƒf}W n ttfk
r<   d}Y nX |S )z{Given a url with authentication components, extract them into a tuple of
    username,password.

    :rtype: (str,str)
    )rä   rä   )r   r   ÚusernameÚpasswordrK   rÞ   )rj   r  rK  r;   r;   r<   Úget_auth_from_urlø  s    
rQ  c                 C   s$   | \}}t | |dƒ t | |dƒ dS )z§Verifies that header parts don't contain leading whitespace
    reserved characters, or return characters.

    :param header: tuple, in the format (name, value).
    r   r   N)Ú_validate_header_part)r½   rt   r�   r;   r;   r<   Úcheck_header_validity  s    rS  c                 C   sx   t |tƒrt| }n2t |tƒr(t| }ntd|›d| › dt|ƒ› �ƒ‚| |¡st|dkr\dnd}td|› d|›�ƒ‚d S )	NzHeader part (z) from z# must be of type str or bytes, not r   rt   r�   zSInvalid leading whitespace, reserved character(s), or returncharacter(s) in header z: )rf   r   r
   r   r	   r   Útyper7   )r½   Úheader_partZheader_validator_indexÚ	validatorÚheader_kindr;   r;   r<   rR    s    



ÿ
ÿrR  c                 C   sF   t | ƒ\}}}}}}|s"|| }}| dd¡d }t|||||dfƒS )zW
    Given a url remove the fragment and the authentication part.

    :rtype: str
    rI  r   rv   rä   )r   Úrsplitr   )rj   r!  rh   rb   rÀ   rL  rM  r;   r;   r<   Úurldefragauth&  s
    
rY  c                 C   s\   t | jddƒ}|dk	rPt| jtƒrPz|| jƒ W qX tk
rL   tdƒ‚Y qXX ntdƒ‚dS )zfMove file pointer back to its recorded starting position
    so it can be read again on redirect.
    rG   Nz;An error occurred when rewinding request body for redirect.z+Unable to rewind request body for redirect.)rx   Úbodyrf   Ú_body_positionr   r2   r    )Úprepared_requestÚ	body_seekr;   r;   r<   Úrewind_body7  s    
 ÿÿr^  )F)F)N)T)r/  )jÚ__doc__rÑ   Ú
contextlibrI   rL   r6   rõ   ró   Úsysr‚   rP   r~   Úcollectionsr   Úpip._vendor.urllib3.utilr   r   rä   r   r   Ú_internal_utilsr	   r
   r   r   Úcompatr   r   r   r   r   r   r   r¢   r   r   r   r   r   r   r   Úcookiesr   Ú
exceptionsr   r   r   r    Ú
structuresr!   ra   ÚwhereÚDEFAULT_CA_BUNDLE_PATHÚDEFAULT_PORTSr}   r4   r3  Úplatformr=   rA   rV   rs   r{   rŽ   Úcontextmanagerr„   rž   r    r§   r©   r£   r¯   r°   r¹   rÆ   rË   rØ   rÜ   rà   Ú	frozensetrè   rî   rò   rÿ   r÷   r  r  r  r  r  r'  r.  r0  r4  r9  ÚencoderB  rC  rD  rH  rN  rQ  rS  rR  rY  r^  r;   r;   r;   r<   Ú<module>   sž    $	
ÿ$	B
9%
 #

(ÿ
<


	&
 