77 lines
2.1 KiB
Python
77 lines
2.1 KiB
Python
# Taken from https://gitlab.com/jvadair/pyscreen
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# All credit goes to the original author, jvadair
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__all__ = ['Screen', 'create', 'kill', 'exists', 'ls']
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import os
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import signal
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import subprocess
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from datetime import datetime
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class ScreenNotFound(Exception):
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pass
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class Screen:
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def __init__(self, pid, kill_on_exit=False):
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"""
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:param pid: The process ID of the screen
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Creates a new Screen object
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"""
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if not exists(pid):
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raise ScreenNotFound(f"No screen with pid {pid}")
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self.pid = pid
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self.kill_on_exit = kill_on_exit
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def __del__(self): # Destroy screen process when object deleted
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if self.kill_on_exit:
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kill(self.pid)
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def send(self, command: str, end="\r") -> None:
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"""
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:param command: The command to be run
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:param end: Appended to the end of the command - the default value is a carriage return
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"""
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os.system(f'screen -S {self.pid} -X stuff {command}{end}')
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def create(name, shell=os.environ['SHELL'], logfile=None, title=None) -> Screen:
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command = ["screen", "-DmS", name, '-s', shell]
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if logfile:
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command.append('-Logfile')
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command.append(logfile)
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if title:
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command.append('-t')
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command.append(title)
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process = subprocess.Popen(command)
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while not process.pid: pass
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return Screen(process.pid)
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def kill(pid):
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os.kill(pid, signal.SIGTERM)
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def exists(pid: int) -> int:
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command = f"screen -S {str(pid)} -Q select .".split()
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pop = subprocess.Popen(command, stdout=subprocess.DEVNULL)
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pop.wait()
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code = pop.returncode
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return False if code else True
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def ls() -> dict:
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out = subprocess.check_output(["screen", "-ls"]).decode()
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out = out.replace('\t', '')
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out = out.split('\n')
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out = out[1:len(out) - 2]
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out = [i.replace(")", "").split("(") for i in out]
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final = {}
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for item in out:
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process = item[0].split('.')
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pid = process[0]
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final[pid] = {'name': process[1]} # final: {pid:{...}, ... }
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final[pid]['time'] = datetime.strptime(item[1], '%m/%d/%Y %X %p')
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return final
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