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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
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basestringÚinteger_typesÚis_py3Úproxy_bypass_environmentÚgetproxies_environmentÚMapping)Úcookiejar_from_dict)ÚCaseInsensitiveDict)Ú
InvalidURLÚInvalidHeaderÚFileModeWarningÚUnrewindableBodyErrorú.netrcÚ_netrcéP   i»  )ÚhttpÚhttpsz, z,\s*T)Úaccept_encodingzaccept-encodingÚwin32c             C   sô   yt rdd l}ndd l}W n tk
r.   dS X y6|j|jdƒ}t|j|dƒd ƒ}|j|dƒd }W n tk
rz   dS X | sˆ| rŒdS |j	dƒ}xX|D ]P}|dkr´d| kr´d	S |j
dd
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ddƒ}tj|| tjƒrœd	S qœW d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© r8   úE/var/www/agendate/envp3/lib/python3.6/site-packages/requests/utils.pyÚproxy_bypass_registry7   s8    


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:   )r6   r8   r8   r9   r   ^   s    r   c             C   s   t | dƒr| jƒ } | S )z/Returns an internal sequence dictionary update.Úitems)Úhasattrr;   )Údr8   r8   r9   Údict_to_sequencej   s    
r>   c             C   s6  d }d}t | dƒrt| ƒ}nft | dƒr.| j}nTt | dƒr‚y| jƒ }W n tjtfk
r^   Y n$X tj|ƒj}d| j	kr‚t
jdtƒ t | dƒ�ry| jƒ }W n$ ttfk
r¾   |d k	rº|}Y n\X t | dƒoÐ|d k�ry&| jdd	ƒ | jƒ }| j|pôdƒ 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<   r@   rA   ÚioÚUnsupportedOperationÚAttributeErrorÚosÚfstatÚst_sizeÚmodeÚwarningsÚwarnr   rC   r0   ÚIOErrorrD   Úmax)ÚoÚtotal_lengthÚcurrent_positionrA   r8   r8   r9   Ú	super_lens   s@    







rT   Fc             C   s>  t jjdƒ}|dk	r|f}ndd„ tD ƒ}yôddlm}m} d}xD|D ]<}yt jj|ƒ}W n tk
rn   dS X t jj	|ƒrF|}P qFW |dkr’dS t
| ƒ}	d}
t| tƒr²|
jdƒ}
|	jj|
ƒd }y6||ƒj|ƒ}|rö|d râdnd	}|| |d
 fS W n" |tfk
�r   |�r‚ Y nX W n ttfk
�r8   Y nX dS )z;Returns the Requests tuple auth for a given url from netrc.ÚNETRCNc             s   s   | ]}d j |ƒV  qdS )z~/{}N)Úformat)Ú.0Úfr8   r8   r9   ú	<genexpr>º   s    z!get_netrc_auth.<locals>.<genexpr>r   )ÚnetrcÚNetrcParseErroró   :Úasciir   rE   )rI   ÚenvironÚgetÚNETRC_FILESrZ   r[   ÚpathÚ
expanduserÚKeyErrorÚexistsr   Ú
isinstancer   ÚdecodeÚnetlocr1   ÚauthenticatorsrO   r+   rH   )ÚurlÚraise_errorsÚ
netrc_fileÚnetrc_locationsrZ   r[   Ú
netrc_pathrX   ÚlocÚriÚsplitstrr6   r   Úlogin_ir8   r8   r9   Úget_netrc_auth³   s@    


rr   c             C   sB   t | ddƒ}|r>t|tƒr>|d dkr>|d dkr>tjj|ƒS dS )z0Tries to guess the filename of the given object.ÚnameNr   ú<r   ú>éÿÿÿÿ)Úgetattrre   r   rI   ra   Úbasename)Úobjrs   r8   r8   r9   Úguess_filenameì   s    rz   c          
   C   sØ   t jj| ƒr| S t jj| ƒ\}}x:|rZt jj|ƒ rZt jj|ƒ\}}|sJP dj||gƒ}q"W tj|ƒsj| S tj|ƒ}||jƒ kr„| S t	j
ƒ }t jj||jdƒd ƒ}t jj|ƒsÔt|ƒ�}|j|j|ƒƒ W d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/r   Nrv   )rI   ra   rd   r1   ÚjoinÚzipfileÚ
is_zipfileÚZipFileÚnamelistÚtempfileÚ
gettempdirÚatomic_openÚwriteÚread)ra   ÚarchiveÚmemberÚprefixÚzip_fileÚtmpÚextracted_pathÚfile_handlerr8   r8   r9   Úextract_zipped_pathsô   s&    


r�   c             c   s„   t jd dkrtjntj}tjtjj| ƒd�\}}y,tj	|dƒ�}|V  W dQ R X ||| ƒ W n  t
k
r~   tj|ƒ ‚ Y nX dS )z-Write a file to the disk in an atomic fashionr   rE   )ÚdirÚwbN)ÚsysÚversion_inforI   Úrenamer2   r�   Úmkstempra   ÚdirnameÚfdopenÚBaseExceptionÚremove)ÚfilenameÚreplacerÚtmp_descriptorÚtmp_nameÚtmp_handlerr8   r8   r9   rƒ     s    
rƒ   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
    Nz+cannot encode objects that are not 2-tuples)re   r   r   Úboolr.   Ú
ValueErrorr   )Úvaluer8   r8   r9   Úfrom_key_val_list'  s
    r    c             C   s@   | dkrdS t | ttttfƒr&tdƒ‚t | tƒr8| jƒ } 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
    Nz+cannot encode objects that are not 2-tuples)	re   r   r   r�   r.   rž   r   r;   Úlist)rŸ   r8   r8   r9   Úto_key_val_listB  s    
r¢   c             C   s\   g }xRt | ƒD ]F}|dd… |dd…   ko4dkn  rJt|dd… ƒ}|j|ƒ qW |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   ú"rv   rv   )Ú_parse_list_headerÚunquote_header_valueÚappend)rŸ   ÚresultÚitemr8   r8   r9   Úparse_list_header`  s    (r©   c             C   s|   i }xrt | ƒD ]f}d|kr$d||< q|jddƒ\}} | dd… | dd…   koVdkn  rlt| dd… ƒ} | ||< qW |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   r£   rv   rv   )r¤   r1   r¥   )rŸ   r§   r¨   rs   r8   r8   r9   Úparse_dict_header€  s    (r«   c             C   s^   | rZ| d | d	   kodkn  rZ| dd
… } | sF| dd… dkrZ| j ddƒj ddƒ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   r   r£   NrE   z\\ú\z\"rv   rv   )r2   )rŸ   Úis_filenamer8   r8   r9   r¥   £  s
    $r¥   c             C   s"   i }x| D ]}|j ||j< q
W |S )z€Returns a key/value dictionary from a CookieJar.

    :param cj: CookieJar object to extract cookies from.
    :rtype: dict
    )rŸ   rs   )ÚcjÚcookie_dictÚcookier8   r8   r9   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   )r®   r¯   r8   r8   r9   Úadd_dict_to_cookiejarË  s    r²   c             C   sT   t jdtƒ tjdtjd�}tjdtjd�}tjdƒ}|j| ƒ|j| ƒ |j| ƒ 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=["\']*(.+?)["\'>])rM   rN   ÚDeprecationWarningr3   Úcompiler5   Úfindall)ÚcontentÚ
charset_reÚ	pragma_reÚxml_rer8   r8   r9   Úget_encodings_from_contentÖ  s    
r»   c       
      C   sž   | j dƒ}|d jƒ |dd…  }}i }d}xh|D ]`}|jƒ }|r2|d }}|jdƒ}	|	dkr†|d|	… j|ƒ}||	d d… j|ƒ}|||jƒ < q2W ||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"' Trª   rv   )r1   ÚstripÚfindÚlower)
ÚheaderÚtokensÚcontent_typeÚparamsÚparams_dictÚitems_to_stripÚparamÚkeyrŸ   Úindex_of_equalsr8   r8   r9   Ú_parse_content_type_headerê  s    



rÈ   c             C   sP   | j dƒ}|sdS t|ƒ\}}d|kr4|d jdƒ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/jsonzutf-8)r_   rÈ   r¼   )ÚheadersrÁ   rÂ   r8   r8   r9   Úget_encoding_from_headers  s    
rÌ   c             c   sr   |j dkr"x| D ]
}|V  qW dS tj|j ƒdd�}x | D ]}|j|ƒ}|r:|V  q:W |jddd�}|rn|V  dS )zStream decodes a iterator.Nr2   )Úerrorsó    T)Úfinal)ÚencodingÚcodecsÚgetincrementaldecoderrf   )ÚiteratorÚrr¨   ÚdecoderÚchunkÚrvr8   r8   r9   Ústream_decode_response_unicode  s    





rØ   c             c   sL   d}|dks|dkrt | ƒ}x*|t | ƒk rF| ||| … V  ||7 }qW dS )z Iterate over slices of a string.r   N)r@   )ÚstringÚslice_lengthÚposr8   r8   r9   Úiter_slices.  s    rÜ   c             C   sv   t jdtƒ g }t| jƒ}|rJyt| j|ƒS  tk
rH   |j|ƒ Y nX yt| j|dd�S  t	k
rp   | j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.)r2   )rÍ   N)
rM   rN   r´   rÌ   rË   r   r·   ÚUnicodeErrorr¦   Ú	TypeError)rÔ   Útried_encodingsrÐ   r8   r8   r9   Úget_unicode_from_response8  s    
rà   Z4ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzz0123456789-._~c             C   sÈ   | j dƒ}x²tdt|ƒƒD ] }|| dd… }t|ƒdkrª|jƒ rªytt|dƒƒ}W n  tk
rt   td| ƒ‚Y nX |tkr˜||| dd…  ||< qºd||  ||< qd||  ||< qW dj	|ƒ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   rE   é   z%Invalid percent-escape sequence: '%s'NÚ )
r1   Úranger@   ÚisalnumÚchrr.   rž   r   ÚUNRESERVED_SETr|   )ÚuriÚpartsÚiÚhÚcr8   r8   r9   Úunquote_unreserveda  s    
rí   c             C   s:   d}d}yt t| ƒ|d�S  tk
r4   t | |d�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
   rí   r   )rè   Úsafe_with_percentÚsafe_without_percentr8   r8   r9   Úrequote_uriy  s    rñ   c             C   sl   t jdtj| ƒƒd }|jdƒ\}}t jdtjtt|ƒƒƒƒd }t jdtj|ƒƒ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_atonr1   Údotted_netmaskr.   )ÚipÚnetÚipaddrÚnetaddrÚbitsÚnetmaskÚnetworkr8   r8   r9   Úaddress_in_network�  s
    rþ   c             C   s&   ddd|  > d A }t jtjd|ƒƒ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)rô   Ú	inet_ntoarò   Úpack)Úmaskrû   r8   r8   r9   rö   ž  s    rö   c             C   s*   yt j| ƒ W n t jk
r$   dS X dS )z
    :rtype: bool
    FT)rô   rõ   Úerror)Ú	string_ipr8   r8   r9   Úis_ipv4_address©  s
    r  c             C   sˆ   | j dƒdkr€yt| jdƒd ƒ}W n tk
r8   dS X |dk sJ|dkrNdS ytj| jdƒd ƒ W q„ tjk
r|   dS X ndS dS )zV
    Very simple check of the cidr format in no_proxy variable.

    :rtype: bool
    r{   r   Frÿ   r   T)Úcountr.   r1   rž   rô   rõ   r  )Ústring_networkr  r8   r8   r9   Úis_valid_cidr´  s    r  c             c   sT   |dk	}|r"t jj| ƒ}|t j| < z
dV  W d|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)rI   r^   r_   )Úenv_namerŸ   Úvalue_changedÚ	old_valuer8   r8   r9   Úset_environÌ  s    


r  c       	      C   s,  dd„ }|}|dkr|dƒ}t | ƒ}|jdkr2dS |rØdd„ |jdd	ƒjd
ƒD ƒ}t|jƒr”xz|D ],}t|ƒr€t|j|ƒrŽdS qb|j|krbdS qbW nD|j}|jr°|dj|jƒ7 }x&|D ]}|jj	|ƒsÐ|j	|ƒr¶dS q¶W t
d|ƒ�6 yt|jƒ}W n  ttjfk
�r   d}Y nX W dQ R X |�r(dS dS )zL
    Returns whether we should bypass proxies or not.

    :rtype: bool
    c             S   s   t jj| ƒpt jj| jƒ ƒS )N)rI   r^   r_   Úupper)Úkr8   r8   r9   Ú<lambda>ê  s    z'should_bypass_proxies.<locals>.<lambda>NÚno_proxyTc             s   s   | ]}|r|V  qd S )Nr8   )rW   r6   r8   r8   r9   rY   û  s    z(should_bypass_proxies.<locals>.<genexpr>ú rã   ú,z:{}F)r   Úhostnamer2   r1   r  r  rþ   ÚportrV   Úendswithr  r   rÞ   rô   Úgaierror)	ri   r  Ú	get_proxyÚno_proxy_argÚparsedÚproxy_ipÚhost_with_portr6   Úbypassr8   r8   r9   Úshould_bypass_proxiesâ  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   )ri   r  r8   r8   r9   Úget_environ_proxies  s    r  c             C   sv   |pi }t | ƒ}|jdkr.|j|j|jdƒƒS |jd |j |jd|j dg}d}x|D ]}||krX|| }P qXW |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_keyr8   r8   r9   Úselect_proxy+  s    

r&  c       	      C   sv   |dk	r|ni }| j }t|ƒj}|jdƒ}|jƒ }|rrt||d� rrt||d�}|j||jdƒƒ}|rr|j||ƒ |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$  r8   r8   r9   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/%s)r   )rs   r8   r8   r9   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_ENCODINGr8   r8   r8   r9   Údefault_headersi  s
    r3  c       	      C   sÒ   g }d}| j |ƒ} | s|S x²tjd| ƒD ]¢}y|jddƒ\}}W n tk
r^   |d }}Y nX d|j dƒi}xP|jdƒD ]B}y|jdƒ\}} W n tk
r¦   P Y nX | j |ƒ||j |ƒ< qzW |j|ƒ q(W |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   rã   ri   z<> '"rª   )r¼   r3   r1   rž   r¦   )	rŸ   ÚlinksÚreplace_charsÚvalri   rÂ   ÚlinkrÅ   rÆ   r8   r8   r9   Úparse_header_linksu  s&    
r8  ú r]   rE   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 |jtƒ}|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-sigrE   zutf-16r   zutf-8z	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	nullcountr8   r8   r9   Úguess_json_utf   s*    
rG  c             C   sl   t | ƒ}|\}}}}}}}	|j}
|
s.||
 }
}|r@dj||
gƒ}
|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@Nrã   )r   rg   r|   r   )ri   Ú
new_schemer  r   Úauthr6   r  ra   ÚqueryÚfragmentrg   r8   r8   r9   Úprepend_scheme_if_neededÀ  s    
rM  c             C   sB   t | ƒ}y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)
    rã   )rã   rã   )r   r   ÚusernameÚpasswordrH   rÞ   )ri   r  rJ  r8   r8   r9   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}y|j|ƒ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_STRr4   r   rÞ   Útype)r¿   rs   rŸ   Úpatr8   r8   r9   Úcheck_header_validityò  s    

rU  c             C   sF   t | ƒ\}}}}}}|s"|| }}|jddƒd }t|||||dfƒS )zW
    Given a url remove the fragment and the authentication part.

    :rtype: str
    rH  r   rã   rv   )r   Úrsplitr   )ri   r   rg   ra   rÂ   rK  rL  r8   r8   r9   Úurldefragauth  s
    
rW  c             C   s`   t | jddƒ}|dk	rTt| jtƒrTy|| 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.
    rD   Nz;An error occurred when rewinding request body for redirect.z+Unable to rewind request body for redirect.)rw   Úbodyre   Ú_body_positionr   rO   r0   r   )Úprepared_requestÚ	body_seekr8   r8   r9   Úrewind_body  s    r\  )r   r   )F)FzBABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~)N)T)r.  )jÚ__doc__rÑ   Ú
contextlibrF   rI   r3   rô   rò   r�   r�   rM   r}   Úcollectionsr   Zurllib3.utilr   r   r   rã   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_PORTSr|   r1   r2  Úplatformr:   r>   rT   rr   rz   r�   Úcontextmanagerrƒ   r    r¢   r©   r«   r¥   r±   r²   r»   rÈ   rÌ   rØ   rÜ   rà   Ú	frozensetrç   rí   rñ   rþ   rö   r  r  r  r  r  r&  r-  r/  r3  r8  ÚencoderA  rB  rC  rG  rM  rP  rµ   rQ  rR  rU  rW  r\  r8   r8   r8   r9   Ú<module>	   s˜   @
'	@
9% #

%=


	&
 

