95 lines
2.3 KiB
Python
95 lines
2.3 KiB
Python
# -*- test-case-name: twisted.conch.test.test_manhole -*-
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# Copyright (c) Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""
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Asynchronous local terminal input handling
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@author: Jp Calderone
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"""
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import os, tty, sys, termios
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from twisted.internet import reactor, stdio, protocol, defer
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from twisted.python import failure, reflect, log
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from twisted.conch.insults.insults import ServerProtocol
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from twisted.conch.manhole import ColoredManhole
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class UnexpectedOutputError(Exception):
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pass
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class TerminalProcessProtocol(protocol.ProcessProtocol):
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def __init__(self, proto):
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self.proto = proto
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self.onConnection = defer.Deferred()
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def connectionMade(self):
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self.proto.makeConnection(self)
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self.onConnection.callback(None)
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self.onConnection = None
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def write(self, bytes):
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self.transport.write(bytes)
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def outReceived(self, bytes):
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self.proto.dataReceived(bytes)
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def errReceived(self, bytes):
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self.transport.loseConnection()
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if self.proto is not None:
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self.proto.connectionLost(failure.Failure(UnexpectedOutputError(bytes)))
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self.proto = None
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def childConnectionLost(self, childFD):
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if self.proto is not None:
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self.proto.childConnectionLost(childFD)
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def processEnded(self, reason):
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if self.proto is not None:
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self.proto.connectionLost(reason)
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self.proto = None
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class ConsoleManhole(ColoredManhole):
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"""
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A manhole protocol specifically for use with L{stdio.StandardIO}.
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"""
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def connectionLost(self, reason):
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"""
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When the connection is lost, there is nothing more to do. Stop the
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reactor so that the process can exit.
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"""
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reactor.stop()
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def runWithProtocol(klass):
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fd = sys.__stdin__.fileno()
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oldSettings = termios.tcgetattr(fd)
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tty.setraw(fd)
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try:
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p = ServerProtocol(klass)
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stdio.StandardIO(p)
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reactor.run()
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finally:
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termios.tcsetattr(fd, termios.TCSANOW, oldSettings)
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os.write(fd, "\r\x1bc\r")
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def main(argv=None):
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log.startLogging(file('child.log', 'w'))
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if argv is None:
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argv = sys.argv[1:]
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if argv:
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klass = reflect.namedClass(argv[0])
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else:
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klass = ConsoleManhole
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runWithProtocol(klass)
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if __name__ == '__main__':
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main()
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