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# -*- python -*-
'''
xpybar – xmobar replacement written in python
Copyright © 2014, 2015, 2016, 2017 Mattias Andrée (maandree@member.fsf.org)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
'''
from util import *
class VMStat:
'''
Various virtual memory statistics
@variable keys:list<str> List of avaiable keys
'''
def __init__(self):
'''
Constructor
'''
vmstat = None
with open('/proc/vmstat', 'rb') as file:
vmstat = file.read()
vmstat = vmstat.decode('utf-8', 'replace')
vmstat = map(lambda x : x.split(' '), filter(lambda x : not x == '', vmstat.split('\n')))
self.__info = {}
self.keys = []
for field, value in vmstat:
self.__info[field] = int(value)
self.keys.append(field)
def __contains__(self, key):
'''
Get whether or not a key is available
@param key:str The key
@return :bool The availability
'''
return key in self.__info
def __getitem__(self, key):
'''
Lookup a field from '/proc/vmstat'
@param key:str The field name
@return :int The value of the field
'''
return self.__info[key]
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