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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <nicolas@nicolargo.com>
#
# SPDX-License-Identifier: LGPL-3.0-only
#
# flake8: noqa
# pylint: skip-file
"""Python 2/3 compatibility shims."""
from __future__ import print_function, unicode_literals
import operator
import sys
import unicodedata
import types
import subprocess
import os
from datetime import datetime
from glances.logger import logger
PY3 = sys.version_info[0] == 3
if PY3:
import queue
from configparser import ConfigParser, NoOptionError, NoSectionError
from statistics import mean
from xmlrpc.client import Fault, ProtocolError, ServerProxy, Transport, Server
from xmlrpc.server import SimpleXMLRPCRequestHandler, SimpleXMLRPCServer
from urllib.request import Request, urlopen, base64
from urllib.error import HTTPError, URLError
from urllib.parse import urlparse
# Correct issue #1025 by monkey path the xmlrpc lib
from defusedxml.xmlrpc import monkey_patch
monkey_patch()
input = input
range = range
map = map
text_type = str
binary_type = bytes
bool_type = bool
long = int
PermissionError = OSError
viewkeys = operator.methodcaller('keys')
viewvalues = operator.methodcaller('values')
viewitems = operator.methodcaller('items')
def printandflush(string):
"""Print and flush (used by stdout* outputs modules)"""
print(string, flush=True)
def to_ascii(s):
"""Convert the bytes string to a ASCII string
Useful to remove accent (diacritics)
"""
if isinstance(s, binary_type):
return s.decode()
return s.encode('ascii', 'ignore').decode()
def listitems(d):
return list(d.items())
def listkeys(d):
return list(d.keys())
def listvalues(d):
return list(d.values())
def iteritems(d):
return iter(d.items())
def iterkeys(d):
return iter(d.keys())
def itervalues(d):
return iter(d.values())
def u(s, errors='replace'):
if isinstance(s, text_type):
return s
return s.decode('utf-8', errors=errors)
def b(s, errors='replace'):
if isinstance(s, binary_type):
return s
return s.encode('utf-8', errors=errors)
def n(s):
'''Only in Python 2...
from future.utils import bytes_to_native_str as n
'''
return s
def nativestr(s, errors='replace'):
if isinstance(s, text_type):
return s
elif isinstance(s, (int, float)):
return s.__str__()
else:
return s.decode('utf-8', errors=errors)
def system_exec(command):
"""Execute a system command and return the result as a str"""
try:
res = subprocess.run(command.split(' '), stdout=subprocess.PIPE).stdout.decode('utf-8')
except Exception as e:
logger.debug('Can not evaluate command {} ({})'.format(command, e))
res = ''
return res.rstrip()
else:
from future.utils import bytes_to_native_str as n
import Queue as queue
from itertools import imap as map
from ConfigParser import SafeConfigParser as ConfigParser, NoOptionError, NoSectionError
from SimpleXMLRPCServer import SimpleXMLRPCRequestHandler, SimpleXMLRPCServer
from xmlrpclib import Fault, ProtocolError, ServerProxy, Transport, Server
from urllib2 import Request, urlopen, HTTPError, URLError, base64
from urlparse import urlparse
# Correct issue #1025 by monkey path the xmlrpc lib
from defusedxml.xmlrpc import monkey_patch
monkey_patch()
input = raw_input
range = xrange
ConfigParser.read_file = ConfigParser.readfp
text_type = unicode
binary_type = str
bool_type = types.BooleanType
long = long
PermissionError = OSError
viewkeys = operator.methodcaller('viewkeys')
viewvalues = operator.methodcaller('viewvalues')
viewitems = operator.methodcaller('viewitems')
def printandflush(string):
"""Print and flush (used by stdout* outputs modules)"""
print(string)
sys.stdout.flush()
def mean(numbers):
return float(sum(numbers)) / max(len(numbers), 1)
def to_ascii(s):
"""Convert the unicode 's' to a ASCII string
Useful to remove accent (diacritics)
"""
if isinstance(s, binary_type):
return s
return unicodedata.normalize('NFKD', s).encode('ascii', 'ignore')
def listitems(d):
return d.items()
def listkeys(d):
return d.keys()
def listvalues(d):
return d.values()
def iteritems(d):
return d.iteritems()
def iterkeys(d):
return d.iterkeys()
def itervalues(d):
return d.itervalues()
def u(s, errors='replace'):
if isinstance(s, text_type):
return s.encode('utf-8', errors=errors)
return s.decode('utf-8', errors=errors)
def b(s, errors='replace'):
if isinstance(s, binary_type):
return s
return s.encode('utf-8', errors=errors)
def nativestr(s, errors='replace'):
if isinstance(s, binary_type):
return s
elif isinstance(s, (int, float)):
return s.__str__()
else:
return s.encode('utf-8', errors=errors)
def system_exec(command):
"""Execute a system command and return the result as a str"""
try:
res = subprocess.check_output(command.split(' '))
except Exception as e:
logger.debug('Can not execute command {} ({})'.format(command, e))
res = ''
return res.rstrip()
# Globals functions for both Python 2 and 3
def subsample(data, sampling):
"""Compute a simple mean subsampling.
Data should be a list of numerical itervalues
:return: a sub-sampled list of sampling length
"""
if len(data) <= sampling:
return data
sampling_length = int(round(len(data) / float(sampling)))
return [mean(data[s * sampling_length : (s + 1) * sampling_length]) for s in range(0, sampling)]
def time_serie_subsample(data, sampling):
"""Compute a simple mean subsampling.
Data should be a list of set (time, value)
:return: a sub-sampled list of sampling length
"""
if len(data) <= sampling:
return data
t = [t[0] for t in data]
v = [t[1] for t in data]
sampling_length = int(round(len(data) / float(sampling)))
t_sub_sampled = [t[s * sampling_length : (s + 1) * sampling_length][0] for s in range(0, sampling)]
v_sub_sampled = [mean(v[s * sampling_length : (s + 1) * sampling_length]) for s in range(0, sampling)]
return list(zip(t_sub_sampled, v_sub_sampled))
def to_fahrenheit(celsius):
"""Convert Celsius to Fahrenheit."""
return celsius * 1.8 + 32
def is_admin():
"""Return if current user is an admin or not
The inner function fails unless you have Windows XP SP2 or higher.
The failure causes a traceback to be printed and this function to return False.
https://stackoverflow.com/a/19719292
:return: True if the current user is an 'Admin' whatever that means (root on Unix), otherwise False.
"""
if os.name == 'nt':
import ctypes
import traceback
# WARNING: requires Windows XP SP2 or higher!
try:
return ctypes.windll.shell32.IsUserAnAdmin()
except Exception as e:
traceback.print_exc()
return False
else:
# Check for root on Posix
return os.getuid() == 0
def key_exist_value_not_none(k, d):
# Return True if:
# - key k exists
# - d[k] is not None
return k in d and d[k] is not None
def key_exist_value_not_none_not_v(k, d, v=''):
# Return True if:
# - key k exists
# - d[k] is not None
# - d[k] != v
return k in d and d[k] is not None and d[k] != v
def disable(class_name, var):
"""Set disable_<var> to True in the class class_name."""
setattr(class_name, 'enable_' + var, False)
setattr(class_name, 'disable_' + var, True)
def enable(class_name, var):
"""Set disable_<var> to False in the class class_name."""
setattr(class_name, 'enable_' + var, True)
setattr(class_name, 'disable_' + var, False)
def pretty_date(time=False):
"""
Get a datetime object or a int() Epoch timestamp and return a
pretty string like 'an hour ago', 'Yesterday', '3 months ago',
'just now', etc
Source: https://stackoverflow.com/questions/1551382/user-friendly-time-format-in-python
"""
now = datetime.now()
if type(time) is int:
diff = now - datetime.fromtimestamp(time)
elif isinstance(time, datetime):
diff = now - time
elif not time:
diff = 0
second_diff = diff.seconds
day_diff = diff.days
if day_diff < 0:
return ''
if day_diff == 0:
if second_diff < 10:
return "just now"
if second_diff < 60:
return str(second_diff) + " secs"
if second_diff < 120:
return "a min"
if second_diff < 3600:
return str(second_diff // 60) + " mins"
if second_diff < 7200:
return "an hour"
if second_diff < 86400:
return str(second_diff // 3600) + " hours"
if day_diff == 1:
return "yesterday"
if day_diff < 7:
return str(day_diff) + " days"
if day_diff < 31:
return str(day_diff // 7) + " weeks"
if day_diff < 365:
return str(day_diff // 30) + " months"
return str(day_diff // 365) + " years"
def urlopen_auth(url, username, password):
"""Open a url with basic auth"""
return urlopen(
Request(
url,
headers={'Authorization': 'Basic ' + base64.b64encode(('%s:%s' % (username, password)).encode()).decode()},
)
)