U 7U @sPddlmZddlZddlZddlZddlZddlZddZGdddeZ dS))absolute_importNc Csjt|sdSztdt|tjd}Wn6ztj dtj df}WnYYdSXYnX|S)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. NZhhZhhhhZLINESZCOLUMNS) osisattyfilenostructZunpackfcntlZioctltermiosZ TIOCGWINSZenviron)fdZdimsr //usr/lib/python3/dist-packages/dockerpty/tty.pysizes r c@sJeZdZdZdddZddZddZd d Zd d Zd dZ ddZ 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() TcCs||_||_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 raworiginal_attributes)selfr rr r r __init__=s zTerminal.__init__cCs ||S)z? Invoked when a `with` block is first entered. )startrr r r __enter__KszTerminal.__enter__cGs |dS)z: Invoked when a `with` block is finished. N)stop)r_r r r __exit__TszTerminal.__exit__cCs|jS)zE Returns True if the TTY should operate in raw mode. )rrr r r israw\szTerminal.israwcCs6t|jr2|r2t|j|_t |jdS)z} Saves the current terminal attributes and makes the tty raw. This method returns None immediately. N) rrr rrrZ tcgetattrrttyZsetrawrr r r rdszTerminal.startcCs"|jdk rt|jtj|jdS)z Restores the terminal attributes back to before setting raw mode. If the raw terminal was not started, does nothing. N)rrZ tcsetattrr Z TCSADRAINrr r r rps  z Terminal.stopcCsdjt|j|j|jdS)Nz{cls}({fd}, raw={raw}))clsr r)formattype__name__r rrr r r __repr__~s zTerminal.__repr__N)T) r __module__ __qualname____doc__rrrrrrrr r r r r1s   r) Z __future__rrrrrrr objectrr r r r s