openCom-Companion/sbapp/plyer/platforms/macosx/battery.py

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2022-09-16 18:07:57 +02:00
'''
Module of MacOS API for plyer.battery.
'''
from os import environ
from subprocess import Popen, PIPE
from plyer.facades import Battery
from plyer.utils import whereis_exe
class OSXBattery(Battery):
'''
Implementation of MacOS battery API.
'''
def _get_state(self):
old_lang = environ.get('LANG', '')
environ['LANG'] = 'C'
status = {"isCharging": None, "percentage": None}
ioreg_process = Popen(
["ioreg", "-rc", "AppleSmartBattery"],
stdout=PIPE
)
output = ioreg_process.communicate()[0]
environ['LANG'] = old_lang
if not output:
return status
is_charging = max_capacity = current_capacity = None
for line in output.decode('utf-8').splitlines():
if 'IsCharging' in line:
is_charging = line.rpartition('=')[-1].strip()
if 'MaxCapacity' in line:
max_capacity = float(line.rpartition('=')[-1].strip())
if 'CurrentCapacity' in line:
current_capacity = float(line.rpartition('=')[-1].strip())
if is_charging:
status['isCharging'] = is_charging == "Yes"
if current_capacity and max_capacity:
status['percentage'] = 100.0 * current_capacity / max_capacity
return status
def instance():
'''
Instance for facade proxy.
'''
import sys
if whereis_exe('ioreg'):
return OSXBattery()
sys.stderr.write("ioreg not found.")
return Battery()