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lmZ ddlmZmZmZmZmZmZmZm Z m!Z!m"Z"m#Z#m$Z$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Z0e 1¡ Z2dddœZ3d 4e 5dedd�d ¡¡Z6ej7dk�rndd„ Z8dd„ Zdd„ Z9dd „ Z:dtd"d#„Z;d$d%„ Z<d&d'„ Z=ej>d(d)„ ƒZ?d*d+„ Z@d,d-„ ZAd.d/„ ZBd0d1„ ZCdud2d3„ZDd4d5„ ZEd6d7„ ZFd8d9„ ZGd:d;„ ZHd<d=„ ZId>d?„ ZJd@dA„ ZKdBdC„ ZLeMdDƒZNdEdF„ ZOdGdH„ ZPdIdJ„ ZQdKdL„ ZRdMdN„ ZSdOdP„ ZTej>dQdR„ ƒZUdSdT„ ZVdvdUdV„ZWdWdX„ ZXdwdYdZ„ZYdxd\d]„ZZd^d_„ Z[d`da„ Z\db ]dc¡Z^e^dd Z_e^de Z`dfdg„ Zadhdi„ Zbdjdk„ Zce ddl¡Zee ddm¡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_headers)Ú	parse_urlé   ©Ú__version__)Úcerts)Úto_native_string)Úparse_http_list)ÚquoteÚurlparseÚbytesÚstrÚunquoteÚ
getproxiesÚproxy_bypassÚ
urlunparseÚ
basestringÚinteger_typesÚis_py3Úproxy_bypass_environmentÚgetproxies_environmentÚMapping©Úcookiejar_from_dict)ÚCaseInsensitiveDict)Ú
InvalidURLÚInvalidHeaderÚFileModeWarningÚUnrewindableBodyError)z.netrcÚ_netrcéP   i»  )ÚhttpÚhttpsz, z,\s*T)Úaccept_encodingzaccept-encodingÚwin32c                 C   sô   zt rdd l}ndd l}W n tk
r0   Y dS X z6| |jd¡}t| |d¡d ƒ}| |d¡d }W n tk
r~   Y dS X |rˆ|sŒdS | 	d¡}|D ]T}|dkr´d| kr´ d	S | 
dd
¡}| 
dd¡}| 
dd¡}t || tj¡rš d	S qšdS )Nr   Fz;Software\Microsoft\Windows\CurrentVersion\Internet SettingsZProxyEnableZProxyOverrideú;z<local>Ú.Tz\.Ú*z.*ú?)r   ÚwinregÚ_winregÚImportErrorÚOpenKeyÚHKEY_CURRENT_USERÚintÚQueryValueExÚOSErrorÚsplitÚreplaceÚreÚmatchÚI)Úhostr*   ZinternetSettingsZproxyEnableZproxyOverrideÚtest© r9   ú2/tmp/pip-unpacked-wheel-pr7jkl2n/requests/utils.pyÚproxy_bypass_registry7   sF    
ÿÿÿÿÿ
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;   )r7   r9   r9   r:   r   ^   s    r   c                 C   s   t | dƒr|  ¡ } | S )z/Returns an internal sequence dictionary update.Úitems)Úhasattrr<   )Údr9   r9   r:   Údict_to_sequencej   s    
r?   c              	   C   s8  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tfk
r¾   |d k	rº|}Y n^X t | dƒ�r|d k�rz&|  dd	¡ |  ¡ }|  |pöd¡ W n ttf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=   rA   rB   ÚioÚUnsupportedOperationÚAttributeErrorÚosÚfstatÚst_sizeÚmodeÚwarningsÚwarnr   rD   r1   ÚIOErrorrE   Úmax)ÚoÚtotal_lengthÚcurrent_positionrB   r9   r9   r:   Ú	super_lens   sB    




ù



rU   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.ZNETRCNc                 s   s   | ]}d   |¡V  qdS )z~/{}N)Úformat)Ú.0Úfr9   r9   r:   Ú	<genexpr>º   s     z!get_netrc_auth.<locals>.<genexpr>r   )ÚnetrcÚNetrcParseErroró   :Úasciir   rF   )rJ   ÚenvironÚgetÚNETRC_FILESrZ   r[   ÚpathÚ
expanduserÚKeyErrorÚexistsr   Ú
isinstancer   ÚdecodeÚnetlocr2   ÚauthenticatorsrP   r,   rI   )ÚurlÚraise_errorsZ
netrc_fileZnetrc_locationsrZ   r[   Ú
netrc_pathrX   ÚlocÚriÚsplitstrr7   r    Úlogin_ir9   r9   r:   Úget_netrc_auth³   s@    

rp   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getattrre   r   rJ   ra   Úbasename)Úobjrq   r9   r9   r:   Úguess_filenameì   s
    
ÿrx   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/rs   )rJ   ra   rd   r2   ÚjoinÚzipfileÚ
is_zipfileÚZipFileÚnamelistÚtempfileÚ
gettempdirÚatomic_openÚwriteÚread)ra   ÚarchiveÚmemberÚprefixÚzip_fileÚtmpÚextracted_pathZfile_handlerr9   r9   r:   Úextract_zipped_pathsô   s&    


rŠ   c              	   c   s„   t jd dkrtjntj}tjtj | ¡d�\}}z,t 	|d¡�}|V  W 5 Q R X ||| ƒ W n  t
k
r~   t |¡ ‚ Y nX dS )z-Write a file to the disk in an atomic fashionr   rF   )ÚdirÚwbN)ÚsysÚversion_inforJ   Úrenamer3   r   Úmkstempra   ÚdirnameÚfdopenÚBaseExceptionÚremove)ÚfilenameÚreplacerZtmp_descriptorZtmp_nameZtmp_handlerr9   r9   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)re   r   r   Úboolr/   Ú
ValueErrorr   ©Úvaluer9   r9   r:   Úfrom_key_val_list'  s
    rœ   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
    Nr—   )	re   r   r   r˜   r/   r™   r   r<   Úlistrš   r9   r9   r:   Úto_key_val_listB  s    
rž   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   rs   ú")Ú_parse_list_headerÚunquote_header_valueÚappend)r›   ÚresultÚitemr9   r9   r:   Úparse_list_header`  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   rs   rŸ   )r    r2   r¡   )r›   r£   r¤   rq   r9   r9   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   rs   rŸ   r   NrF   z\\ú\z\")r3   )r›   Úis_filenamer9   r9   r:   r¡   £  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›   rq   )ÚcjÚcookie_dictÚcookier9   r9   r:   Údict_from_cookiejar¼  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   )rª   r«   r9   r9   r:   Úadd_dict_to_cookiejarË  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=["\']*(.+?)["\'>])rN   rO   ÚDeprecationWarningr4   Úcompiler6   Úfindall)ÚcontentÚ
charset_reÚ	pragma_reÚxml_rer9   r9   r:   Úget_encodings_from_contentÖ  s    ü
ÿþr·   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¦   rs   )r2   ÚstripÚfindÚlower)
ÚheaderÚtokensÚcontent_typeÚparamsÚparams_dictÚitems_to_stripÚparamÚkeyr›   Úindex_of_equalsr9   r9   r:   Ú_parse_content_type_headerê  s    


rÄ   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_   rÄ   r¸   )Úheadersr½   r¾   r9   r9   r:   Úget_encoding_from_headers  s    
rÉ   c                 c   sj   |j dkr| D ]
}|V  qdS t |j ¡dd�}| D ]}| |¡}|r4|V  q4|jddd�}|rf|V  dS )zStream decodes a iterator.Nr3   ©Úerrorsó    T)Úfinal)ÚencodingÚcodecsÚgetincrementaldecoderrf   )ÚiteratorÚrr¤   ÚdecoderÚchunkÚrvr9   r9   r:   Ústream_decode_response_unicode  s    

rÖ   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)rA   )ÚstringÚslice_lengthÚposr9   r9   r:   Úiter_slices.  s    rÚ   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.)r3   rÊ   N)
rN   rO   r°   rÉ   rÈ   r   r³   ÚUnicodeErrorr¢   Ú	TypeError)rÒ   Útried_encodingsrÎ   r9   r9   r:   Úget_unicode_from_response8  s    ü
rÞ   zBABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~c              	   C   sÄ   |   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
rr   td| ƒ‚Y nX |tkr–||| dd…  ||< q¸d||  ||< 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   rF   é   z%Invalid percent-escape sequence: '%s'NÚ )
r2   ÚrangerA   ÚisalnumÚchrr/   r™   r   ÚUNRESERVED_SETrz   )ÚuriÚpartsÚiÚhÚcr9   r9   r:   Úunquote_unreserveda  s    
rë   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   rë   r   )ræ   Úsafe_with_percentÚsafe_without_percentr9   r9   r:   Úrequote_uriy  s    rï   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   ry   )ÚstructÚunpackÚsocketÚ	inet_atonr2   Údotted_netmaskr/   )ÚipÚnetÚipaddrÚnetaddrÚbitsÚnetmaskÚnetworkr9   r9   r:   Úaddress_in_network�  s
    rü   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)rò   Ú	inet_ntoarð   Úpack)Úmaskrù   r9   r9   r:   rô   ž  s    rô   c                 C   s,   zt  | ¡ W n t jk
r&   Y dS X dS )z
    :rtype: bool
    FT)rò   ró   Úerror)Ú	string_ipr9   r9   r:   Úis_ipv4_address©  s
    r  c                 C   sŒ   |   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 qˆ tj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
    ry   r   Frý   r   T)Úcountr/   r2   r™   rò   ró   r  )Ústring_networkr   r9   r9   r:   Úis_valid_cidr´  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)rJ   r^   r_   )Úenv_namer›   Úvalue_changedÚ	old_valuer9   r9   r:   Úset_environÌ  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)rJ   r^   r_   Úupper)Úkr9   r9   r:   Ú<lambda>ê  rÌ   z'should_bypass_proxies.<locals>.<lambda>NÚno_proxyTc                 s   s   | ]}|r|V  qd S r  r9   )rW   r7   r9   r9   r:   rY   ú  s     z(should_bypass_proxies.<locals>.<genexpr>ú rá   ú,z:{}F)r   Úhostnamer3   r2   r  r  rü   ÚportrV   Úendswithr
  r   rÜ   rò   Úgaierror)	ri   r  Ú	get_proxyÚno_proxy_argÚparsedÚproxy_ipÚhost_with_portr7   Úbypassr9   r9   r:   Úshould_bypass_proxiesâ  s@    
ÿ


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   )ri   r  r9   r9   r:   Úget_environ_proxies  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)ri   ÚproxiesÚurlpartsÚ
proxy_keysÚproxyÚ	proxy_keyr9   r9   r:   Úselect_proxy+  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  )ri   r   r   r_   Úcopyr  r  Ú
setdefault)	Úrequestr!  Ú	trust_envri   r   r  Únew_proxiesÚenviron_proxiesr$  r9   r9   r:   Úresolve_proxiesE  s    

r-  úpython-requestsc                 C   s   d| t f S )zO
    Return a string representing the default user agent.

    :rtype: str
    z%s/%sr   )rq   r9   r9   r:   Údefault_user_agent`  s    r/  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   r/  ÚDEFAULT_ACCEPT_ENCODINGr9   r9   r9   r:   Údefault_headersi  s    ür3  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   rá   ri   z<> '"r¦   )r¸   r4   r2   r™   r¢   )	r›   ÚlinksÚreplace_charsÚvalri   r¾   ÚlinkrÁ   rÂ   r9   r9   r:   Úparse_header_linksu  s&    
r8  ú r]   rF   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-sigrF   zutf-16r   rÇ   z	utf-16-ber   z	utf-16-lez	utf-32-bez	utf-32-le)
rÏ   ÚBOM_UTF32_LEÚBOM_UTF32_BEÚBOM_UTF8ÚBOM_UTF16_LEÚBOM_UTF16_BEr  Ú_nullÚ_null2Ú_null3)ÚdataÚsampleÚ	nullcountr9   r9   r:   Úguess_json_utf   s*    
rG  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@Nrá   )r   rg   rz   r   )ri   Ú
new_schemer  r   Úauthr7   r  ra   ÚqueryÚfragmentrg   r9   r9   r:   Úprepend_scheme_if_neededÀ  s    
rM  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)
    )rá   rá   )r   r   ÚusernameÚpasswordrI   rÜ   )ri   r  rJ  r9   r9   r:   Úget_auth_from_urlÝ  s    
rP  s   ^\S[^\r\n]*$|^$z^\S[^\r\n]*$|^$c              	   C   sf   | \}}t |tƒrt}nt}z| |¡s4td| ƒ‚W n* tk
r`   td||t|ƒf ƒ‚Y nX dS )zÕVerifies that header value is a string which doesn't contain
    leading whitespace or return characters. This prevents unintended
    header injection.

    :param header: tuple, in the format (name, value).
    z7Invalid return character or leading space in header: %sz>Value for header {%s: %s} must be of type str or bytes, not %sN)re   r   Ú_CLEAN_HEADER_REGEX_BYTEÚ_CLEAN_HEADER_REGEX_STRr5   r   rÜ   Útype)r»   rq   r›   Úpatr9   r9   r:   Úcheck_header_validityò  s    

ÿrU  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
    rH  r   rs   rá   )r   Úrsplitr   )ri   r   rg   ra   r¾   rK  rL  r9   r9   r:   Úurldefragauth  s
    
rW  c              	   C   s`   t | jddƒ}|dk	rTt| jtƒrTz|| jƒ W q\ ttfk
rP   tdƒ‚Y q\X ntdƒ‚dS )zfMove file pointer back to its recorded starting position
    so it can be read again on redirect.
    rE   Nz;An error occurred when rewinding request body for redirect.z+Unable to rewind request body for redirect.)ru   Úbodyre   Ú_body_positionr   rP   r1   r   )Úprepared_requestÚ	body_seekr9   r9   r:   Úrewind_body  s    r\  )F)F)N)T)r.  )jÚ__doc__rÏ   Ú
contextlibrG   rJ   r4   rò   rð   r�   r   rN   r{   Úcollectionsr   Zurllib3.utilr   r   r   rá   r   Ú_internal_utilsr	   Úcompatr
   r    r   r   r   r   r   r   r   r   r   r   r   r   r   r   Úcookiesr   Ú
structuresr   Ú
exceptionsr   r   r   r   r`   ÚwhereÚDEFAULT_CA_BUNDLE_PATHÚDEFAULT_PORTSrz   r2   r2  Úplatformr;   r?   rU   rp   rx   rŠ   Úcontextmanagerr�   rœ   rž   r¥   r§   r¡   r­   r®   r·   rÄ   rÉ   rÖ   rÚ   rÞ   Ú	frozensetrå   rë   rï   rü   rô   r  r  r
  r  r  r&  r-  r/  r3  r8  ÚencoderA  rB  rC  rG  rM  rP  r±   rQ  rR  rU  rW  r\  r9   r9   r9   r:   Ú<module>   s    @
ÿ'	@
9%
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