U
    žV_(*  ã                   @   sØ   d dl mZ zd dlmZmZ W n$ ek
rD   d dlmZmZ Y nX zd dlmZ W n" ek
rx   G dd„ dƒZY nX d dlm	Z	 ddl
mZ dd	lmZmZmZ d
dgZeƒ ZG dd
„ d
eƒZG dd„ deƒZdS )é    )Úabsolute_import)ÚMappingÚMutableMapping)ÚRLockc                   @   s   e Zd Zdd„ Zdd„ ZdS )r   c                 C   s   d S ©N© ©Úselfr   r   ú8/tmp/pip-unpacked-wheel-0gzb0gzi/urllib3/_collections.pyÚ	__enter__   s    zRLock.__enter__c                 C   s   d S r   r   )r	   Úexc_typeÚ	exc_valueÚ	tracebackr   r   r
   Ú__exit__   s    zRLock.__exit__N)Ú__name__Ú
__module__Ú__qualname__r   r   r   r   r   r
   r      s   r   )ÚOrderedDicté   )ÚInvalidHeader)ÚiterkeysÚ
itervaluesÚPY3ÚRecentlyUsedContainerÚHTTPHeaderDictc                   @   sV   e Zd ZdZeZddd„Zdd„ Zdd	„ Zd
d„ Z	dd„ Z
dd„ Zdd„ Zdd„ ZdS )r   a‘  
    Provides a thread-safe dict-like container which maintains up to
    ``maxsize`` keys while throwing away the least-recently-used keys beyond
    ``maxsize``.

    :param maxsize:
        Maximum number of recent elements to retain.

    :param dispose_func:
        Every time an item is evicted from the container,
        ``dispose_func(value)`` is called.  Callback which will get called
    é
   Nc                 C   s"   || _ || _|  ¡ | _tƒ | _d S r   )Ú_maxsizeÚdispose_funcÚContainerClsÚ
_containerr   Úlock)r	   Úmaxsizer   r   r   r
   Ú__init__.   s    
zRecentlyUsedContainer.__init__c              
   C   s8   | j �( | j |¡}|| j|< |W  5 Q R £ S Q R X d S r   )r    r   Úpop)r	   ÚkeyÚitemr   r   r
   Ú__getitem__5   s    
z!RecentlyUsedContainer.__getitem__c              	   C   sl   t }| j�@ | j |t ¡}|| j|< t| jƒ| jkrF| jjdd�\}}W 5 Q R X | jrh|t k	rh|  |¡ d S )NF)Úlast)Ú_Nullr    r   ÚgetÚlenr   Úpopitemr   )r	   r$   ÚvalueÚevicted_valueÚ_keyr   r   r
   Ú__setitem__<   s    
z!RecentlyUsedContainer.__setitem__c              	   C   s2   | j � | j |¡}W 5 Q R X | jr.|  |¡ d S r   )r    r   r#   r   )r	   r$   r,   r   r   r
   Ú__delitem__K   s    z!RecentlyUsedContainer.__delitem__c              
   C   s(   | j � t| jƒW  5 Q R £ S Q R X d S r   )r    r*   r   r   r   r   r
   Ú__len__R   s    zRecentlyUsedContainer.__len__c                 C   s   t dƒ‚d S )Nz7Iteration over this class is unlikely to be threadsafe.)ÚNotImplementedErrorr   r   r   r
   Ú__iter__V   s    ÿzRecentlyUsedContainer.__iter__c              	   C   sH   | j � tt| jƒƒ}| j ¡  W 5 Q R X | jrD|D ]}|  |¡ q4d S r   )r    Úlistr   r   Úclearr   )r	   Úvaluesr,   r   r   r
   r5   [   s    zRecentlyUsedContainer.clearc              
   C   s,   | j � tt| jƒƒW  5 Q R £ S Q R X d S r   )r    r4   r   r   r   r   r   r
   Úkeyse   s    zRecentlyUsedContainer.keys)r   N)r   r   r   Ú__doc__r   r   r"   r&   r/   r0   r1   r3   r5   r7   r   r   r   r
   r      s   

c                       sô   e Zd ZdZd-‡ fdd„	Zdd„ Zdd„ Zd	d
„ Zdd„ Zdd„ Z	dd„ Z
esZejZejZeƒ Zdd„ Zdd„ Zefdd„Zdd„ Zdd„ Zdd„ Zefdd„ZeZeZeZeZdd „ Zd!d"„ Zd#d$„ Zd%d&„ Zd'd(„ Z d)d*„ Z!e"d+d,„ ƒZ#‡  Z$S ).r   ap  
    :param headers:
        An iterable of field-value pairs. Must not contain multiple field names
        when compared case-insensitively.

    :param kwargs:
        Additional field-value pairs to pass in to ``dict.update``.

    A ``dict`` like container for storing HTTP Headers.

    Field names are stored and compared case-insensitively in compliance with
    RFC 7230. Iteration provides the first case-sensitive key seen for each
    case-insensitive pair.

    Using ``__setitem__`` syntax overwrites fields that compare equal
    case-insensitively in order to maintain ``dict``'s api. For fields that
    compare equal, instead create a new ``HTTPHeaderDict`` and use ``.add``
    in a loop.

    If multiple fields that are equal case-insensitively are passed to the
    constructor or ``.update``, the behavior is undefined and some will be
    lost.

    >>> headers = HTTPHeaderDict()
    >>> headers.add('Set-Cookie', 'foo=bar')
    >>> headers.add('set-cookie', 'baz=quxx')
    >>> headers['content-length'] = '7'
    >>> headers['SET-cookie']
    'foo=bar, baz=quxx'
    >>> headers['Content-Length']
    '7'
    Nc                    sP   t t| ƒ ¡  tƒ | _|d k	r>t|tƒr4|  |¡ n
|  |¡ |rL|  |¡ d S r   )Úsuperr   r"   r   r   Ú
isinstanceÚ
_copy_fromÚextend)r	   ÚheadersÚkwargs©Ú	__class__r   r
   r"   Œ   s    

zHTTPHeaderDict.__init__c                 C   s    ||g| j | ¡ < | j | ¡  S r   ©r   Úlower©r	   r$   Úvalr   r   r
   r/   —   s    zHTTPHeaderDict.__setitem__c                 C   s    | j | ¡  }d |dd … ¡S )Nú, r   ©r   rB   ÚjoinrC   r   r   r
   r&   ›   s    zHTTPHeaderDict.__getitem__c                 C   s   | j | ¡ = d S r   rA   ©r	   r$   r   r   r
   r0   Ÿ   s    zHTTPHeaderDict.__delitem__c                 C   s   |  ¡ | jkS r   )rB   r   rH   r   r   r
   Ú__contains__¢   s    zHTTPHeaderDict.__contains__c                 C   s^   t |tƒst|dƒsdS t |t| ƒƒs2t| ƒ|ƒ}tdd„ |  ¡ D ƒƒtdd„ | ¡ D ƒƒkS )Nr7   Fc                 s   s   | ]\}}|  ¡ |fV  qd S r   )rB   )Ú.0ÚkÚvr   r   r
   Ú	<genexpr>ª   s     z(HTTPHeaderDict.__eq__.<locals>.<genexpr>)r:   r   ÚhasattrÚtypeÚdictÚ
itermerged©r	   Úotherr   r   r
   Ú__eq__¥   s    ÿzHTTPHeaderDict.__eq__c                 C   s   |   |¡ S r   )rT   rR   r   r   r
   Ú__ne__®   s    zHTTPHeaderDict.__ne__c                 C   s
   t | jƒS r   )r*   r   r   r   r   r
   r1   ·   s    zHTTPHeaderDict.__len__c                 c   s   | j  ¡ D ]}|d V  q
d S )Nr   )r   r6   )r	   Úvalsr   r   r
   r3   º   s    zHTTPHeaderDict.__iter__c                 C   s@   z| | }W n$ t k
r0   || jkr(‚ | Y S X | |= |S dS )z©D.pop(k[,d]) -> v, remove specified key and return the corresponding value.
          If key is not found, d is returned if given, otherwise KeyError is raised.
        N)ÚKeyErrorÚ_HTTPHeaderDict__marker)r	   r$   Údefaultr,   r   r   r
   r#   ¿   s    

zHTTPHeaderDict.popc                 C   s$   z
| |= W n t k
r   Y nX d S r   )rW   rH   r   r   r
   ÚdiscardÐ   s    
zHTTPHeaderDict.discardc                 C   s4   |  ¡ }||g}| j ||¡}||k	r0| |¡ dS )zâAdds a (name, value) pair, doesn't overwrite the value if it already
        exists.

        >>> headers = HTTPHeaderDict(foo='bar')
        >>> headers.add('Foo', 'baz')
        >>> headers['foo']
        'bar, baz'
        N)rB   r   Ú
setdefaultÚappend)r	   r$   rD   Ú	key_lowerÚnew_valsrV   r   r   r
   ÚaddÖ   s
    	zHTTPHeaderDict.addc                 O   sì   t |ƒdkrtd t |ƒ¡ƒ‚t |ƒdkr2|d nd}t|tƒr`| ¡ D ]\}}|  ||¡ qHnjt|tƒr†|D ]}|  ||| ¡ qnnDt|dƒr°| 	¡ D ]}|  ||| ¡ q˜n|D ]\}}|  ||¡ q´| 
¡ D ]\}}|  ||¡ qÒdS )zÀGeneric import function for any type of header-like object.
        Adapted version of MutableMapping.update in order to insert items
        with self.add instead of self.__setitem__
        r   z9extend() takes at most 1 positional arguments ({0} given)r   r   r7   N)r*   Ú	TypeErrorÚformatr:   r   Ú	iteritemsr_   r   rN   r7   Úitems)r	   Úargsr>   rS   r$   rD   r,   r   r   r
   r<   æ   s(    ÿÿ


zHTTPHeaderDict.extendc                 C   sN   z| j | ¡  }W n* tk
r<   || jkr4g  Y S | Y S X |dd… S dS )zmReturns a list of all the values for the named field. Returns an
        empty list if the key doesn't exist.r   N)r   rB   rW   rX   )r	   r$   rY   rV   r   r   r
   Úgetlist  s    

zHTTPHeaderDict.getlistc                 C   s   dt | ƒjt|  ¡ ƒf S )Nz%s(%s))rO   r   rP   rQ   r   r   r   r
   Ú__repr__  s    zHTTPHeaderDict.__repr__c                 C   s>   |D ]4}|  |¡}t|tƒr$t|ƒ}|g| | j| ¡ < qd S r   )re   r:   r4   r   rB   )r	   rS   r$   rD   r   r   r
   r;     s
    

zHTTPHeaderDict._copy_fromc                 C   s   t | ƒƒ }| | ¡ |S r   )rO   r;   )r	   Úcloner   r   r
   Úcopy!  s    

zHTTPHeaderDict.copyc                 c   s<   | D ]2}| j | ¡  }|dd… D ]}|d |fV  q"qdS )z8Iterate over all header lines, including duplicate ones.r   Nr   rA   )r	   r$   rV   rD   r   r   r
   rb   &  s    zHTTPHeaderDict.iteritemsc                 c   s8   | D ].}| j | ¡  }|d d |dd… ¡fV  qdS )z:Iterate over all headers, merging duplicate ones together.r   rE   r   NrF   rC   r   r   r
   rQ   -  s    zHTTPHeaderDict.itermergedc                 C   s   t |  ¡ ƒS r   )r4   rb   r   r   r   r
   rc   3  s    zHTTPHeaderDict.itemsc                 C   s€   d}g }|j D ]h}| |¡rT|s.td| ƒ‚n&|d \}}||d | ¡  f|d< q| dd¡\}}| || ¡ f¡ q| |ƒS )z4Read headers from a Python 2 httplib message object.)ú ú	z/Header continuation with no previous header: %séÿÿÿÿri   ú:r   )r=   Ú
startswithr   ÚstripÚsplitr\   )ÚclsÚmessageÚobs_fold_continued_leadersr=   Úliner$   r,   r   r   r
   Úfrom_httplib6  s    

ÿzHTTPHeaderDict.from_httplib)N)%r   r   r   r8   r"   r/   r&   r0   rI   rT   rU   r   r   r   r   ÚobjectrX   r1   r3   r#   rZ   r_   r<   re   Ú
getheadersÚgetallmatchingheadersÚigetÚget_allrf   r;   rh   rb   rQ   rc   Úclassmethodrt   Ú__classcell__r   r   r?   r
   r   j   s>   !	N)Ú
__future__r   Úcollections.abcr   r   ÚImportErrorÚcollectionsÚ	threadingr   r   Ú
exceptionsr   Zpackages.sixr   r   r   Ú__all__ru   r(   r   r   r   r   r   r
   Ú<module>   s   L