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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
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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
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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/lib/python2.7/pty.pyR 1 s$
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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/lib/python2.7/pty.pyR H s
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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
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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/lib/python2.7/pty.pyt _writen� s c C s t j | d � S( s Default read function.i ( R t read( R ( ( s /usr/lib/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/lib/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
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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
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