conch.py 文件源码

def run():
    global options, old
    args = sys.argv[1:]
    if '-l' in args: # cvs is an idiot
        i = args.index('-l')
        args = args[i:i+2]+args
        del args[i+2:i+4]
    for arg in args[:]:
        try:
            i = args.index(arg)
            if arg[:2] == '-o' and args[i+1][0]!='-':
                args[i:i+2] = [] # suck on it scp
        except ValueError:
            pass
    options = ClientOptions()
    try:
        options.parseOptions(args)
    except usage.UsageError, u:
        print 'ERROR: %s' % u
        options.opt_help()
        sys.exit(1)
    if options['log']:
        if options['logfile']:
            if options['logfile'] == '-':
                f = sys.stdout
            else:
                f = file(options['logfile'], 'a+')
        else:
            f = sys.stderr
        realout = sys.stdout
        log.startLogging(f)
        sys.stdout = realout
    else:
        log.discardLogs()
    doConnect()
    fd = sys.stdin.fileno()
    try:
        old = tty.tcgetattr(fd)
    except:
        old = None
    try:
        oldUSR1 = signal.signal(signal.SIGUSR1, lambda *a: reactor.callLater(0, reConnect))
    except:
        oldUSR1 = None
    try:
        reactor.run()
    finally:
        if old:
            tty.tcsetattr(fd, tty.TCSANOW, old)
        if oldUSR1:
            signal.signal(signal.SIGUSR1, oldUSR1)
        if (options['command'] and options['tty']) or not options['notty']:
            signal.signal(signal.SIGWINCH, signal.SIG_DFL)
    if sys.stdout.isatty() and not options['command']:
        print 'Connection to %s closed.' % options['host']
    sys.exit(exitStatus)