#!/usr/bin/python
'''Display memory statistics from vm_stat, converted to bytes
Output order is: free, active, inactive, wired, pageIns, pageOuts'''
import re
import os

pipe = os.popen('/usr/bin/vm_stat')
vm_stat_out = pipe.read(10000)
pipe.close()
lines = vm_stat_out.split('\n')

# Adjust if necessary; this defines what is printed, in what order
printOrder = [\
	'free',
	'active',
	'inactive',
	'wired',
	'Pageins',
	'Pageouts']

# dict for data storage
data = {}

def addData(line, label) :
        data[label] = (page_size * int(re.search('\d+', line).group(0)))

for line in lines :
	if 'page size' in line :
		page_size = int(re.search('\d+', line).group(0))
	if 'Pages free' in line : addData(line, 'free')
	if 'Pages active' in line : addData(line, 'active')
	if 'Pages inactive' in line : addData(line, 'inactive')
	if 'Pages wired' in line : addData(line, 'wired')
	if 'Pageins' in line : addData(line, 'Pageins')
	if 'Pageouts' in line : addData(line, 'Pageouts')

for item in printOrder :
	print data[item]