文件操作 - pty.cpython-310.pyc
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文件: /snap/core22/2411/usr/lib/python3.10/__pycache__/pty.cpython-310.pyc
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o `�wi] � @ s� d Z ddlmZ ddlZddlZddlZddlmZmZ ddlmZmZm Z g d�Z dZ dZ dZ dZd d � Zd d � Zd d� Zdd� Zdd� Zdd� Zdd� Zeefdd�Zeefdd�ZdS )zPseudo terminal utilities.� )�selectN)�close�waitpid)�setraw� tcgetattr� tcsetattr)�openpty�fork�spawn� � c C s< zt �� W S ttfy Y nw t� \} }t|�}| |fS )zdopenpty() -> (master_fd, slave_fd) Open a pty master/slave pair, using os.openpty() if possible.)�osr �AttributeError�OSError�_open_terminal� slave_open)� master_fd� slave_name�slave_fd� r �/usr/lib/python3.10/pty.pyr s � r c C sH zt �� \} }W n ttfy Y t� S w t �|�}t �|� | |fS )z�master_open() -> (master_fd, slave_name) Open a pty master and return the fd, and the filename of the slave end. Deprecated, use openpty() instead.)r r r r �ttynamer r )r r r r r r � master_open& s � r c C sd dD ]+} dD ]&}d| | }z t �|t j�}W n ty Y qw |d| | f S qtd��)z1Open pty master and return (master_fd, tty_name).�pqrstuvwxyzPQRST�0123456789abcdefz/dev/ptyz/dev/ttyzout of pty devices)r �open�O_RDWRr )�x�y�pty_name�fdr r r r 6 s ��r c C sn t �| t j�}z ddlm}m} W n ty | Y S w z|||d� |||d� W |S ty6 Y |S w )z�slave_open(tty_name) -> slave_fd Open the pty slave and acquire the controlling terminal, returning opened filedescriptor. Deprecated, use openpty() instead.r )�ioctl�I_PUSH�ptem�ldterm)r r r �fcntlr! r" � ImportErrorr )�tty_name�resultr! r" r r r r B s � ��r c C s� zt �� \} }W n ttfy Y n w | tkr.z t �� W | |fS ty- Y | |fS w | |fS t� \}}t �� } | tkrvt �� t �|� t � |t � t � |t � t � |t � |t krct �|� t � t �t �t j�}t �|� | |fS t �|� | |fS )zdfork() -> (pid, master_fd) Fork and make the child a session leader with a controlling terminal.)r �forkptyr r �CHILD�setsidr r r �dup2� STDIN_FILENO� STDOUT_FILENO� STDERR_FILENOr r r )�pidr r r �tmp_fdr r r r T s: � �� �r c C s( |rt �| |�}||d� }|sdS dS )z#Write all the data to a descriptor.N)r �write)r �data�nr r r �_writen| s �r5 c C s t �| d�S )zDefault read function.i )r �read)r r r r �_read� s r7 c C s� | t g}|rHt|g g �\}}}| |v r/z|| �}W n ty$ d}Y nw |s)dS t�t|� t |v rD|t �}|s?|�t � nt| |� |sdS dS )z�Parent copy loop. Copies pty master -> standard output (master_read) standard input -> pty master (stdin_read)� N)r- r r r r2 r. �remover5 )r � master_read� stdin_read�fds�rfds�_wfds�_xfdsr3 r r r �_copy� s$ � �r@ c C s� t | �t d�kr | f} t�d| � t� \}}|tkr%tj| d g| �R � z tt�}t t� d}W n t j y= d}Y nw zt |||� W |rOt tt j|� n |rZt tt j|� w w t|� t|d�d S )zCreate a spawned process.� z pty.spawnr TFr )�type�sys�auditr r* r �execlpr r- r �tty�errorr@ r � TCSAFLUSHr r )�argvr: r; r0 r �mode�restorer r r r � s. ����r )�__doc__r r rC rF r r r r r �__all__r- r. r/ r* r r r r r r5 r7 r@ r r r r r �<module> s* (
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