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tty.cpython-310.pyc
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o �7U� � @ sP d dl mZ d dlZd dlZd dlZd dlZd dlZdd� ZG dd� de�Z dS )� )�absolute_importNc C sd t �| �� �s dS zt�dt�| tjd��}W |S zt j d t j d f}W Y |S Y Y dS )z� Return a tuple (rows,cols) representing the size of the TTY `fd`. The provided file descriptor should be the stdout stream of the TTY. If the TTY size cannot be determined, returns None. N�hh�hhhh�LINES�COLUMNS) �os�isatty�fileno�struct�unpack�fcntl�ioctl�termios� TIOCGWINSZ�environ)�fd�dims� r �//usr/lib/python3/dist-packages/dockerpty/tty.py�size s ��r c @ sJ e Zd ZdZddd�Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dS )�Terminalz� Terminal provides wrapper functionality to temporarily make the tty raw. This is useful when streaming data from a pseudo-terminal into the tty. Example: with Terminal(sys.stdin, raw=True): do_things_in_raw_mode() Tc C s || _ || _d| _dS )a Initialize a terminal for the tty with stdin attached to `fd`. Initializing the Terminal has no immediate side effects. The `start()` method must be invoked, or `with raw_terminal:` used before the terminal is affected. N)r �raw�original_attributes)�selfr r r r r �__init__= s zTerminal.__init__c C s | � � | S )z? Invoked when a `with` block is first entered. )�start�r r r r � __enter__K s zTerminal.__enter__c G s | � � dS )z: Invoked when a `with` block is finished. N)�stop)r �_r r r �__exit__T s zTerminal.__exit__c C s | j S )zE Returns True if the TTY should operate in raw mode. )r r r r r �israw\ s zTerminal.israwc C s> t �| j�� �r| �� r t�| j�| _t� | j� dS dS dS )z} Saves the current terminal attributes and makes the tty raw. This method returns None immediately. N) r r r r r! r � tcgetattrr �tty�setrawr r r r r d s �zTerminal.startc C s& | j durt�| jtj| j � dS dS )z� Restores the terminal attributes back to before setting raw mode. If the raw terminal was not started, does nothing. N)r r � tcsetattrr � TCSADRAINr r r r r p s ��z Terminal.stopc C s dj t| �j| j| jd�S )Nz{cls}({fd}, raw={raw}))�clsr r )�format�type�__name__r r r r r r �__repr__~ s �zTerminal.__repr__N)T) r* � __module__� __qualname__�__doc__r r r r! r r r+ r r r r r 1 s r ) � __future__r r r r# r r r �objectr r r r r �<module> s