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#!/usr/bin/python2
import os
import select
import sys
import subprocess
import termios
import pty
from itertools import chain
def main(cmd=None):
(pipe_in, pipe_out) = pty.openpty()
pipe = os.fdopen(pipe_in)
mixer = subprocess.Popen(sys.argv[1], stdin=subprocess.PIPE,
stdout=pipe_out, stderr=subprocess.STDOUT,
shell=True, bufsize=0, close_fds=True)
input = iter(sys.stdin.readline, '')
if cmd is not None:
input = chain([cmd], input)
for line in input:
mixer.stdin.write(b"%s\n" % line)
mixer.stdin.flush()
termios.tcflush(pipe_in, termios.TCIFLUSH)
fds = select.select([pipe_in], [], [], 0.2)[0]
if len(fds) <= 0:
mixer.stdin.close()
mixer.wait()
if cmd is None or line != cmd:
return line
return None
if __name__ == '__main__':
cmd = None
while True:
cmd = main(cmd)
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