B
    a\)                 @   s   d dl mZ yd dlmZmZ W n$ ek
rD   d dlmZmZ Y nX yd dlmZ W n" ek
rx   G dd d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 ZG dd
 d
eZG dd deZdS )    )absolute_import)MappingMutableMapping)RLockc               @   s   e Zd Zdd Zdd ZdS )r   c             C   s   d S )N )selfr   r   3lib/python3.7/site-packages/urllib3/_collections.py	__enter__
   s    zRLock.__enter__c             C   s   d S )Nr   )r   exc_type	exc_value	tracebackr   r   r   __exit__   s    zRLock.__exit__N)__name__
__module____qualname__r	   r   r   r   r   r   r   	   s   r   )OrderedDict   )InvalidHeader)iterkeys
itervaluesPY3RecentlyUsedContainer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
    
   Nc             C   s"   || _ || _|  | _t | _d S )N)_maxsizedispose_funcContainerCls
_containerr   lock)r   maxsizer   r   r   r   __init__,   s    
zRecentlyUsedContainer.__init__c          	   C   s,   | j  | j|}|| j|< |S Q R X d S )N)r   r   pop)r   keyitemr   r   r   __getitem__3   s    
z!RecentlyUsedContainer.__getitem__c          	   C   sl   t }| j@ | j|t }|| j|< t| j| jkrF| jjdd\}}W d Q R X | jrh|t k	rh| | d S )NF)Zlast)_Nullr   r   getlenr   popitemr   )r   r"   valueZevicted_valueZ_keyr   r   r   __setitem__:   s    
z!RecentlyUsedContainer.__setitem__c          	   C   s2   | j  | j|}W d Q R X | jr.| | d S )N)r   r   r!   r   )r   r"   r)   r   r   r   __delitem__I   s    z!RecentlyUsedContainer.__delitem__c          	   C   s   | j  t| jS Q R X d S )N)r   r'   r   )r   r   r   r   __len__P   s    zRecentlyUsedContainer.__len__c             C   s   t dd S )Nz7Iteration over this class is unlikely to be threadsafe.)NotImplementedError)r   r   r   r   __iter__T   s    zRecentlyUsedContainer.__iter__c          	   C   sL   | j  tt| j}| j  W d Q R X | jrHx|D ]}| | q6W d S )N)r   listr   r   clearr   )r   valuesr)   r   r   r   r0   W   s    
zRecentlyUsedContainer.clearc          	   C   s    | j  tt| jS Q R X d S )N)r   r/   r   r   )r   r   r   r   keysa   s    zRecentlyUsedContainer.keys)r   N)r   r   r   __doc__r   r   r    r$   r*   r+   r,   r.   r0   r2   r   r   r   r   r      s   

c                   s   e Zd ZdZd- fdd	Zdd Zdd Zd	d
 Zdd Zdd Z	dd Z
esZejZejZe Zdd Zdd ZefddZdd Zdd Zdd ZefddZeZeZeZeZdd  Zd!d" Zd#d$ Zd%d& Zd'd( Z d)d* Z!e"d+d, 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|   t | _|d k	r>t|tr4| | n
| | |rL| | d S )N)superr   r    r   r   
isinstance
_copy_fromextend)r   headerskwargs)	__class__r   r   r       s    

zHTTPHeaderDict.__init__c             C   s    ||g| j | < | j |  S )N)r   lower)r   r"   valr   r   r   r*      s    zHTTPHeaderDict.__setitem__c             C   s    | j |  }d|dd  S )Nz, r   )r   r;   join)r   r"   r<   r   r   r   r$      s    zHTTPHeaderDict.__getitem__c             C   s   | j | = d S )N)r   r;   )r   r"   r   r   r   r+      s    zHTTPHeaderDict.__delitem__c             C   s   |  | jkS )N)r;   r   )r   r"   r   r   r   __contains__   s    zHTTPHeaderDict.__contains__c             C   s^   t |tst|dsdS t |t| s2t| |}tdd |  D tdd | D kS )Nr2   Fc             s   s   | ]\}}|  |fV  qd S )N)r;   ).0kvr   r   r   	<genexpr>   s    z(HTTPHeaderDict.__eq__.<locals>.<genexpr>c             s   s   | ]\}}|  |fV  qd S )N)r;   )r?   r@   rA   r   r   r   rB      s    )r5   r   hasattrtypedict
itermerged)r   otherr   r   r   __eq__   s    zHTTPHeaderDict.__eq__c             C   s   |  | S )N)rH   )r   rG   r   r   r   __ne__   s    zHTTPHeaderDict.__ne__c             C   s
   t | jS )N)r'   r   )r   r   r   r   r,      s    zHTTPHeaderDict.__len__c             c   s"   x| j  D ]}|d V  qW d S )Nr   )r   r1   )r   valsr   r   r   r.      s    zHTTPHeaderDict.__iter__c             C   s<   y| | }W n  t k
r,   || jkr( |S X | |= |S dS )zD.pop(k[,d]) -> v, remove specified key and return the corresponding value.
          If key is not found, d is returned if given, otherwise KeyError is raised.
        N)KeyError_HTTPHeaderDict__marker)r   r"   defaultr)   r   r   r   r!      s    
zHTTPHeaderDict.popc             C   s$   y
| |= W n t k
r   Y nX d S )N)rK   )r   r"   r   r   r   discard   s    
zHTTPHeaderDict.discardc             C   s4   |  }||g}| j||}||k	r0|| dS )zAdds 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)r;   r   
setdefaultappend)r   r"   r<   Z	key_lowerZnew_valsrJ   r   r   r   add   s
    	zHTTPHeaderDict.addc             O   s   t |dkrtdt |t |dkr2|d nd}t|trdx| D ]\}}| || qJW nvt|trxj|D ]}| |||  qtW nLt|drx@|	 D ]}| |||  qW nx|D ]\}}| || qW x |
 D ]\}}| || qW dS )zGeneric 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   r2   N)r'   	TypeErrorformatr5   r   	iteritemsrQ   r   rC   r2   items)r   argsr9   rG   r"   r<   r)   r   r   r   r7      s"    



zHTTPHeaderDict.extendc             C   sF   y| j |  }W n" tk
r4   || jkr0g S |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   r;   rK   rL   )r   r"   rM   rJ   r   r   r   getlist   s    
zHTTPHeaderDict.getlistc             C   s   dt | jt|  f S )Nz%s(%s))rD   r   rE   rF   )r   r   r   r   __repr__  s    zHTTPHeaderDict.__repr__c             C   sB   x<|D ]4}| |}t|tr&t|}|g| | j| < qW d S )N)rW   r5   r/   r   r;   )r   rG   r"   r<   r   r   r   r6     s
    


zHTTPHeaderDict._copy_fromc             C   s   t |  }||  |S )N)rD   r6   )r   Zcloner   r   r   copy  s    

zHTTPHeaderDict.copyc             c   sD   x>| D ]6}| j |  }x"|dd D ]}|d |fV  q&W qW dS )z8Iterate over all header lines, including duplicate ones.r   Nr   )r   r;   )r   r"   rJ   r<   r   r   r   rT     s    
zHTTPHeaderDict.iteritemsc             c   s<   x6| D ].}| j |  }|d d|dd fV  qW dS )z:Iterate over all headers, merging duplicate ones together.r   z, r   N)r   r;   r=   )r   r"   r<   r   r   r   rF   &  s    
zHTTPHeaderDict.itermergedc             C   s   t |  S )N)r/   rT   )r   r   r   r   rU   ,  s    zHTTPHeaderDict.itemsc             C   s   d}g }xr|j D ]h}||rV|s0td| n&|d \}}||d |  f|d< q|dd\}}||| f qW | |S )z4Read headers from a Python 2 httplib message object.) 	z/Header continuation with no previous header: %srZ   :r   )r8   
startswithr   stripsplitrP   )clsmessageZobs_fold_continued_leadersr8   liner"   r)   r   r   r   from_httplib/  s    
zHTTPHeaderDict.from_httplib)N)%r   r   r   r3   r    r*   r$   r+   r>   rH   rI   r   r   r   r   objectrL   r,   r.   r!   rN   rQ   r7   rW   Z
getheadersZgetallmatchingheadersZigetZget_allrX   r6   rY   rT   rF   rU   classmethodrd   __classcell__r   r   )r:   r   r   f   s<    N)Z
__future__r   Zcollections.abcr   r   ImportErrorcollectionsZ	threadingr   r   
exceptionsr   Zpackages.sixr   r   r   __all__re   r%   r   r   r   r   r   r   <module>   s   J