File: //proc/self/root/opt/alt/python35/lib64/python3.5/__pycache__/pty.cpython-35.pyc
��Yf� � @ s� d Z d d l m Z d d l Z d d l Z d d d g Z d Z d Z d Z d Z d d � Z d
d � Z
d d
� Z d d � Z d d � Z
d d � Z d d � Z e e d d � Z e e d d � Z d S)zPseudo terminal utilities.� )�selectN�openpty�fork�spawn� � c C sN y t j � SWn t t f k
r( Yn Xt � \ } } t | � } | | f S)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 �(/opt/alt/python35/lib64/python3.5/pty.pyr s c C s^ y t j � \ } } Wn t t f k
r0 Yn' Xt j | � } t j | � | | f St � S)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
�ttyname�closer )r
r r r r r � master_open! s
r c
C s� xm d D]e } x\ d D]T } d | | } y t j | t j � } Wn t k
rX w Yn X| d | | f SWq Wt d � � d S)z1Open pty master and return (master_fd, tty_name).ZpqrstuvwxyzPQRSTZ0123456789abcdefz/dev/ptyz/dev/ttyzout of pty devicesN)r �open�O_RDWRr
)�x�yZpty_name�fdr r r r 1 s
r c C s� t j | t j � } y d d l m } m } Wn t k
rG | SYn Xy$ | | | d � | | | d � Wn t k
r� Yn X| S)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_PUSHZptemZldterm)r r r Zfcntlr r � ImportErrorr
)Ztty_name�resultr r r r r r = s
r c C s6 y t j � \ } } Wn t t f k
r0 Yn: X| t k r` y t j � Wn t k
r_ Yn X| | f St � \ } } t j � } | t k r t j � t j | � t j | t
� t j | t � t j | t � | t k r� t j | � t j
t j t � t j � } t j | � n
t j | � | | f S)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 Ztmp_fdr r r r O s0
c C s3 x, | r. t j | | � } | | d � } q Wd S)z#Write all the data to a descriptor.N)r �write)r �data�nr r r �_writenw s r) c C s t j | d � S)zDefault read function.i )r �read)r r r r �_read} s r+ c C s� | t g } x� t | g g � \ } } } | | k rh | | � } | sX | j | � n t j t | � t | k r | t � } | s� | j t � q t | | � q Wd S)z�Parent copy loop.
Copies
pty master -> standard output (master_read)
standard input -> pty master (stdin_read)N)r" r �remover r& r# r) )r
� master_read�
stdin_readZfdsZrfdsZwfdsZxfdsr' r r r �_copy� s r/ c C s� t | � t d � k r! | f } t � \ } } | t k rP t j | d | � y& t j t � } t j t � d } Wn t j k
r� d } Yn Xy t
| | | � Wn. t k
r� | r� t j t t j
| � Yn Xt j | � t j | d � d S)zCreate a spawned process.� r r )�typer r r �execlp�ttyZ tcgetattrr" Zsetraw�errorr/ r
Z tcsetattrZ TCSAFLUSHr �waitpid)�argvr- r. r% r
�modeZrestorer r r r � s$
)�__doc__r r r3 �__all__r" r# r$ r r r r r r r) r+ r/ r r r r r �<module> s" (