data_test_script.py

Enable keyboard shortcuts

#!/usr/bin/env python3

import os

import signal

import struct

import sys

def output(line, stream=sys.stdout, print_only=False):

    if isinstance(line, str):

        line = line.encode("utf-8", "surrogateescape")

    if not print_only:

        stream.buffer.write(struct.pack("@I", len(line)))

    stream.buffer.write(line)

    stream.flush()

def echo_loop():

    while True:

        line = sys.stdin.buffer.readline()

        if not line:

            break

        output(line)

if sys.platform == "win32":

    import msvcrt

    msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)

cmd = sys.argv[1]

if cmd == "echo":

    echo_loop()

elif cmd == "exit":

    sys.exit(int(sys.argv[2]))

elif cmd == "env":

    for var in sys.argv[2:]:

        output(os.environ.get(var, "!"))

elif cmd == "pwd":

    output(os.path.abspath(os.curdir))

elif cmd == "print_args":

    for arg in sys.argv[2:]:

        output(arg)

elif cmd == "ignore_sigterm":

    signal.signal(signal.SIGTERM, signal.SIG_IGN)

    output("Ready")

    while True:

        try:

            signal.pause()

        except AttributeError:

            import time

            time.sleep(3600)

elif cmd == "print":

    output(sys.argv[2], stream=sys.stdout, print_only=True)

    output(sys.argv[3], stream=sys.stderr, print_only=True)