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64 lines
1.7 KiB
Python
Executable File
64 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Copyright (C) 2018-2022 K4YT3X and contributors.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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Name: PIPE Printer
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Author: K4YT3X
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Date Created: February 27, 2022
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Last Modified: February 28, 2022
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"""
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import os
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import sys
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import threading
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import time
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from typing import IO
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class PipePrinter(threading.Thread):
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def __init__(self, stderr: IO[bytes]) -> None:
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threading.Thread.__init__(self)
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self.stderr = stderr
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self.running = False
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# set read mode to non-blocking
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os.set_blocking(self.stderr.fileno(), False)
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def _print_output(self) -> None:
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output = self.stderr.read()
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if output is not None and len(output) != 0:
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print(output.decode(), file=sys.stderr)
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def run(self) -> None:
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self.running = True
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# keep printing contents in the PIPE
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while self.running:
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time.sleep(0.5)
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try:
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self._print_output()
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# pipe closed
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except ValueError:
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break
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return super().run()
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def stop(self) -> None:
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self.running = False
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