U ¨Ãq`&ã@sPdZddlZddlZddlZddlmZmZGdd„deƒZGdd„de ƒZ dS)zÙ Attempt to generalize the "feeder" part of a `.Channel`: an object which can be read from and closed, but is reading from a buffer fed by another thread. The read operations are blocking and can have a timeout set. éN)ÚPY2Úbc@seZdZdZdS)Ú PipeTimeoutzP Indicates that a timeout was reached on a read from a `.BufferedPipe`. N)Ú__name__Ú __module__Ú __qualname__Ú__doc__©r r ú=/tmp/pip-target-nv4zd3e_/lib/python/paramiko/buffered_pipe.pyrsrc@s|eZdZdZdd„Zer,dd„Zddd„Znd d„Zdd d„Zd d „Zd d„Z dd„Z ddd„Z dd„Z dd„Z dd„ZdS)Ú BufferedPipezª A buffer that obeys normal read (with timeout) & close semantics for a file or socket, but is fed data from another thread. This is used by `.Channel`. cCs4t ¡|_t |j¡|_d|_t d¡|_d|_dS)NÚBF) Ú threadingÚLockÚ_lockÚ ConditionÚ_cvÚ_eventÚarrayÚ_bufferÚ_closed©Úselfr r r Ú__init__.s   zBufferedPipe.__init__cCs|j |¡dS©N)rÚ fromstring©rÚdatar r r Ú_buffer_frombytes7szBufferedPipe._buffer_frombytesNcCs|jd|… ¡Sr)rÚtostring©rÚlimitr r r Ú_buffer_tobytes:szBufferedPipe._buffer_tobytescCs|j |¡dSr)rZ frombytesrr r r r?scCs|jd|… ¡Sr)rÚtobytesrr r r r!BscCsL|j ¡z0||_|js&t|jƒdkr0| ¡n| ¡W5|j ¡XdS)a Set an event on this buffer. When data is ready to be read (or the buffer has been closed), the event will be set. When no data is ready, the event will be cleared. :param threading.Event event: the event to set/clear rN) rÚacquireÚreleaserrÚlenrÚsetÚclear)rÚeventr r r Ú set_eventEs   zBufferedPipe.set_eventcCsL|j ¡z0|jdk r |j ¡| t|ƒ¡|j ¡W5|j ¡XdS)zÑ Feed new data into this pipe. This method is assumed to be called from a separate thread, so synchronization is done. :param data: the data to add, as a ``str`` or ``bytes`` N) rr#r$rr&rrrÚ notifyAllrr r r Úfeed\s   zBufferedPipe.feedcCs:|j ¡zt|jƒdkr"W¢ dSW¢dS|j ¡XdS)ad Returns true if data is buffered and ready to be read from this feeder. A ``False`` result does not mean that the feeder has closed; it means you may need to wait before more data arrives. :return: ``True`` if a `read` call would immediately return at least one byte; ``False`` otherwise. rFTN©rr#r$r%rrr r r Ú read_readyls zBufferedPipe.read_readycCsôtƒ}|j ¡zÒt|jƒdkrŒ|jr.|W¢¸S|dkrs