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68 lines
1.6 KiB
Python
68 lines
1.6 KiB
Python
'''
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Module of Linux API for plyer.battery.
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'''
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import os
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from math import floor
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from os import environ
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from os.path import exists, join
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from subprocess import Popen, PIPE
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from plyer.facades import Battery
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from plyer.utils import whereis_exe
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class LinuxBattery(Battery):
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'''
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Implementation of Linux battery API via accessing the sysclass power_supply
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path from the kernel.
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'''
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def _get_state(self):
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status = {"isCharging": None, "percentage": None}
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kernel_bat_path = join('/sys', 'class', 'power_supply', self.node_name)
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uevent = join(kernel_bat_path, 'uevent')
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with open(uevent, "rb") as fle:
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lines = [
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line.decode('utf-8').strip()
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for line in fle.readlines()
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]
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output = {
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line.split('=')[0]: line.split('=')[1]
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for line in lines
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}
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is_charging = output['POWER_SUPPLY_STATUS'] == 'Charging'
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charge_percent = float(output['POWER_SUPPLY_CAPACITY'])
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status['percentage'] = charge_percent
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status['isCharging'] = is_charging
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return status
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def instance():
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'''
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Instance for facade proxy.
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'''
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import sys
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# if whereis_exe('upower'):
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# return UPowerBattery()
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# sys.stderr.write("upower not found.")
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node_exists = False
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bn = 0
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node_name = None
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for bi in range(0,10):
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path = join('/sys', 'class', 'power_supply', 'BAT'+str(bi))
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if os.path.isdir(path):
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node_name = "BAT"+str(bi)
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break
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if node_name:
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b = LinuxBattery()
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b.node_name = node_name
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return b
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return Battery()
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