74 lines
2.7 KiB
Python
74 lines
2.7 KiB
Python
# pylint: disable=C0111,R0903,W1401
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""" Execute command in shell and print result
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Few command examples:
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'ping -c 1 1.1.1.1 | grep -Po '(?<=time=)\d+(\.\d+)? ms''
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'echo 'BTC=$(curl -s rate.sx/1BTC | grep -Po \'^\d+\')USD''
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'curl -s https://wttr.in/London?format=%l+%t+%h+%w'
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'pip3 freeze | wc -l'
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'any_custom_script.sh | grep arguments'
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Parameters:
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* shell.command: Command to execute
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Use single parentheses if evaluating anything inside (sh-style)
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For example shell.command='echo $(date +'%H:%M:%S')'
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But NOT shell.command='echo $(date +'%H:%M:%S')'
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Second one will be evaluated only once at startup
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* shell.interval: Update interval in seconds
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(defaults to 1s == every bumblebee-status update)
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* shell.async: Run update in async mode. Won't run next thread if
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previous one didn't finished yet. Useful for long
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running scripts to avoid bumblebee-status freezes
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(defaults to False)
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"""
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import os
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import subprocess
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import threading
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import core.module
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import core.widget
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import core.input
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import util.format
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import util.cli
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class Module(core.module.Module):
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def __init__(self, config):
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super().__init__(config, core.widget.Widget(self.get_output))
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self.__command = self.parameter('command')
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self.__async = util.format.asbool(self.parameter('async'))
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if self.__async:
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self.__output = 'please wait...'
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self.__current_thread = threading.Thread()
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# LMB and RMB will update output regardless of timer
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core.input.register(self, button=core.input.LEFT_MOUSE, cmd=self.update)
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core.input.register(self, button=core.input.RIGHT_MOUSE, cmd=self.update)
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def set_output(self, value):
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self.__output = value
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def get_output(self, _):
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return self.__output
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def update(self):
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# if requested then run not async version and just execute command in this thread
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if not self.__async:
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self.__output = util.cli.execute(self.__command, ignore_errors=True)
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return
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# if previous thread didn't end yet then don't do anything
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if self.__current_thread.is_alive():
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return
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# spawn new thread to execute command and pass callback method to get output from it
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self.__current_thread = threading.Thread(
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target=lambda obj, cmd: obj.set_output(util.cli.execute(cmd, ignore_errors=True)),
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args=(self, self.__command)
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)
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self.__current_thread.start()
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# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
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