code.delx.au - monosys/blob - scripts/powerbook_battery

   1 #!/usr/bin/env python
   2
   3 import subprocess, re, sys
   4
   5 # Run ioreg to get the battery status line
   6 p = subprocess.Popen(args=["ioreg", "-w0", "-l"], stdout=subprocess.PIPE)
   7 for line in p.stdout.xreadlines():
   8         if line.find("IOBatteryInfo") >= 0:
   9                 p.stdout.close()
  10                 break
  11 else:
  12         print "IOBatteryInfo not found!"
  13         sys.exit(1)
  14
  15
  16 # Parse the line to a dict & calculate the percentage
  17 line = line.strip()
  18 m = re.compile('^.*"IOBatteryInfo" = ').match(line)
  19 line = line[m.end()+1:-1].replace("=", ":")
  20 exec "fields = " + line
  21 fields["Capacity%"] = int(100.0 * float(fields["Capacity"]) / float(fields["AbsoluteMaxCapacity"]))
  22
  23
  24 # Print to screen
  25 for field in ("Current", "Capacity", "Capacity%", "Cycle Count"):
  26         print "%s:\t%d" % (field, fields[field])
  27
  28