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� m��fc @ 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 � Z d � Z d � Z d � Z d � Z d � Z d � Z e e d � Z e e d � Z d S( s Pseudo terminal utilities.i����( t selectNt openptyt forkt spawni i i c C sM y t j � SWn t t f k r' n Xt � \ } } t | � } | | f S( sd openpty() -> (master_fd, slave_fd) Open a pty master/slave pair, using os.openpty() if possible.( t osR t AttributeErrort OSErrort _open_terminalt slave_open( t master_fdt slave_namet slave_fd( ( s /usr/lib64/python2.7/pty.pyR s c C s] y t j � \ } } Wn t t f k r/ n' Xt j | � } t j | � | | f St � S( s� 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 t ttynamet closeR ( R R R ( ( s /usr/lib64/python2.7/pty.pyt master_open! s c C s� y d d l } Wn t k r# nO Xy" | j t j d d � \ } } Wn t k rg } t j | � n X| | f Sxo d D]g } x^ d D]V } d | | } y t j | t j � } Wn t j k r� q� n X| d | | f SWqy Wt j d � d S( sl Open pty master and return (master_fd, tty_name). SGI and generic BSD version, for when openpty() fails.i����Ni� i t pqrstuvwxyzPQRSTt 0123456789abcdefs /dev/ptys /dev/ttys out of pty devices( t sgit ImportErrort _getptyR t O_RDWRt IOErrort errort open( R t tty_nameR t msgt xt yt pty_namet fd( ( s /usr/lib64/python2.7/pty.pyR 1 s$ " c C s� t j | t j � } y d d l m } m } Wn t k rC | SXy$ | | | d � | | | d � Wn t k r{ n X| S( s� slave_open(tty_name) -> slave_fd Open the pty slave and acquire the controlling terminal, returning opened filedescriptor. Deprecated, use openpty() instead.i����( t ioctlt I_PUSHt ptemt ldterm( R R R t fcntlR R R R ( R t resultR R ( ( s /usr/lib64/python2.7/pty.pyR H s c C s: y t j � \ } } Wn t t f k r/ n< X| t k ra y t j � Wqa t k r] qa Xn | | 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 | � n t j t j t � t j � } t j | � n t j | � | | f S( sd fork() -> (pid, master_fd) Fork and make the child a session leader with a controlling terminal.( R t forkptyR R t CHILDt setsidR R R t dup2t STDIN_FILENOt STDOUT_FILENOt STDERR_FILENOR R R ( t pidR R R t tmp_fd( ( s /usr/lib64/python2.7/pty.pyR Z s0 c C s3 x, | d k r. t j | | � } | | } q Wd S( s# Write all the data to a descriptor.t N( R t write( R t datat n( ( s /usr/lib64/python2.7/pty.pyt _writen� s c C s t j | d � S( s Default read function.i ( R t read( R ( ( s /usr/lib64/python2.7/pty.pyt _read� s c C s� | t g } x� t r� t | g g � \ } } } | | k rq | | � } | s^ | j | � qq t j t | � n t | k r | t � } | s� | j t � q� t | | � q q Wd S( s� Parent copy loop. Copies pty master -> standard output (master_read) standard input -> pty master (stdin_read)N( R( t TrueR t removeR R. R) R1 ( R t master_readt stdin_readt fdst rfdst wfdst xfdsR/ ( ( s /usr/lib64/python2.7/pty.pyt _copy� s c C s� t | � t d � k r$ | f } n t � \ } } | t k rV t j | d | � n y& t j t � } t j t � d } Wn t j k r� d } n Xy t | | | � Wn6 t t f k r� | r� t j t t j | � q� n Xt j | � d S( s Create a spawned process.R- i i N( t typeR R% R t execlpt ttyt tcgetattrR( t setrawR R< R R t tcsetattrt TCSAFLUSHR ( t argvR6 R7 R+ R t modet restore( ( s /usr/lib64/python2.7/pty.pyR � s" ( t __doc__R R R? t __all__R( R) R* R% R R R R R R1 R3 R< R ( ( ( s /usr/lib64/python2.7/pty.pyt <module> s" (