Current File : /usr/lib/python3.8/site-packages/pip/_vendor/cachecontrol/__pycache__//filewrapper.cpython-38.pyc
U
��.e� � @ s d dl mZ G dd� de�ZdS )� )�BytesIOc @ sB e Zd ZdZdd� Zdd� Zdd� Zdd � Zdd d �Zd
d� Z d
S )�CallbackFileWrapperav
Small wrapper around a fp object which will tee everything read into a
buffer, and when that file is closed it will execute a callback with the
contents of that buffer.
All attributes are proxied to the underlying file object.
This class uses members with a double underscore (__) leading prefix so as
not to accidentally shadow an attribute.
c C s t � | _|| _|| _d S �N)r �_CallbackFileWrapper__buf�_CallbackFileWrapper__fp� _CallbackFileWrapper__callback)�self�fp�callback� r �H/usr/lib/python3.8/site-packages/pip/_vendor/cachecontrol/filewrapper.py�__init__ s z CallbackFileWrapper.__init__c C s | � d�}t||�S )Nr )�__getattribute__�getattr)r �namer r r r � __getattr__ s
z CallbackFileWrapper.__getattr__c C sH z| j jd kW S tk
r" Y nX z
| j jW S tk
rB Y nX dS )NF)r r �AttributeError�closed�r r r r Z__is_fp_closed! s
z"CallbackFileWrapper.__is_fp_closedc C s | j r| � | j�� � d | _ d S r )r r �getvaluer r r r �_close2 s zCallbackFileWrapper._closeNc C s, | j �|�}| j�|� | �� r(| �� |S r )r �readr �write�"_CallbackFileWrapper__is_fp_closedr �r Zamt�datar r r r = s
zCallbackFileWrapper.readc C s@ | j �|�}|dkr |dkr |S | j�|� | �� r<| �� |S )N� s
)r �
_safe_readr r r r r r r r r E s z CallbackFileWrapper._safe_read)N)
�__name__�
__module__� __qualname__�__doc__r
r r r r r r r r r r s
r N)�ior �objectr r r r r �<module> s 