from __future__ import division

import re
import os

from math import floor


print '''
	Paprasta programa parodo kiek % yra baterijos.
	Testuota ant HP nx6325 + linux
	by kestaz 2007 @ priekule
'''

class get_battery_info:
	def __init__(self, p):
		self.__last_full_capacity = 0
        	self.__last_remaining_capacity = 0
		self.__battery_present = 0
		self.path = p
	def is_battery_present(self, s, line):
		p = re.compile(s + '\s + (.+)$')
		m = p.match(line)
		if m:
			self.__battery_present = m.group(1)
			
	def find_last_full_capacity(self, s,line):
		p = re.compile(s + '\s+([1-9]+)')
		m = p.match(line)
		if m:
			self.__last_full_capacity = int(m.group(1))

	def find_remaining_capacity(self, s, line):
		p = re.compile(s + '\s+([1-9]+)')
		m = p.match(line)
		if m:
			self.__last_remaining_capacity = int(m.group(1))
					
	def get(self):
		f = open(self.path + "info")
		while True:
			k = f.readline()
			if not k: break
			self.is_battery_present("present:", k)
			self.find_last_full_capacity("last full capacity:",k)
		f1 = open(self.path + "state")
		while True:
			k = f1.readline()
			if self.__battery_present == 'no': break
			if not k: break
			self.find_remaining_capacity("remaining capacity:", k)
	def get_percentage(self):
		k = self.__last_remaining_capacity
		p = self.__last_full_capacity
		if not self.__battery_present == 'no':
			if p == k: print "100%"
			else:
				m = ((p-1) / k) * 100.0 
				self.__battery_present = 0
				m = floor(m)
				print "%.0f" % m + "%"
		else: print "Baterija neprijungta!" 


class list_bat_files:
	def __init__(self, p):
		self.path = p 
		self.get_dirs()
	def get_dirs(self):
		for root, dirs, files in os.walk(self.path):
			if 'state' in files and 'info' in files:
				print "Bat: " + root
				f = get_battery_info(root + "/")
				f.get()
				m = f.get_percentage()
			
f = list_bat_files("/proc/acpi/battery")