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from subprocess import Popen, PIPE
from plyer.facades import Battery
from plyer.utils import whereis_exe
from os import environ
class LinuxBattery(Battery):
def _get_state(self):
old_lang = environ.get('LANG')
environ['LANG'] = 'C'
status = {"isCharging": None, "percentage": None}
# We are supporting only one battery now
dev = "/org/freedesktop/UPower/device/battery_BAT0"
upower_process = Popen(["upower", "-d", dev],
stdout=PIPE)
output = upower_process.communicate()[0]
environ['LANG'] = old_lang
if not output:
return status
power_supply = percentage = None
for l in output.splitlines():
if 'power supply' in l:
power_supply = l.rpartition(':')[-1].strip()
if 'percentage' in l:
percentage = float(l.rpartition(':')[-1].strip()[:-1])
if(power_supply):
status['isCharging'] = power_supply != "yes"
status['percentage'] = percentage
return status
def instance():
import sys
if whereis_exe('upower'):
return LinuxBattery()
sys.stderr.write("upower not found.")
return Battery()
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