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import os
import sys
import string
import random
import time
import socket
import re
try:
import pwd
except ImportError:
import getpass
pwd = None
using_python_3 = True if sys.version_info.major == 3 else False
def get_current_user():
if pwd:
return pwd.getpwuid(os.geteuid()).pw_name
else:
return getpass.getuser()
def user_input():
if using_python_3:
return input()
else:
# using python version 2
return raw_input()
class random_id_gen:
"""
Emulated generator for creating a random chars id of specific length
:parameters:
length : int
the desired length of the generated id
default: 8
:return:
a random id with each next() request.
"""
def __init__(self, length=8):
self.id_chars = string.ascii_lowercase + string.digits
self.length = length
def next(self):
return ''.join(random.choice(self.id_chars) for _ in range(self.length))
__next__ = next
# try to get number from input, return None in case of fail
def get_number(input):
try:
return long(input)
except:
try:
return int(input)
except:
return None
def list_intersect(l1, l2):
return list(filter(lambda x: x in l2, l1))
# actually first list minus second
def list_difference (l1, l2):
return list(filter(lambda x: x not in l2, l1))
# symmetric diff
def list_xor(l1, l2):
return list(set(l1) ^ set(l2))
def is_sub_list (l1, l2):
return set(l1) <= set(l2)
# splits a timestamp in seconds to sec/usec
def sec_split_usec (ts):
return int(ts), int( (ts - int(ts)) * 1e6 )
# a simple passive timer
class PassiveTimer(object):
# timeout_sec = None means forever
def __init__ (self, timeout_sec):
if timeout_sec != None:
self.expr_sec = time.time() + timeout_sec
else:
self.expr_sec = None
def has_expired (self):
# if no timeout was set - return always false
if self.expr_sec == None:
return False
return (time.time() > self.expr_sec)
def is_valid_ipv4 (addr):
try:
socket.inet_pton(socket.AF_INET, addr)
return True
except (socket.error, TypeError):
return False
def is_valid_ipv6(addr):
try:
socket.inet_pton(socket.AF_INET6, addr)
return True
except (socket.error, TypeError):
return False
def is_valid_mac (mac):
return bool(re.match("[0-9a-f]{2}([-:])[0-9a-f]{2}(\\1[0-9a-f]{2}){4}$", mac.lower()))
def list_remove_dup (l):
tmp = list()
for x in l:
if not x in tmp:
tmp.append(x)
return tmp
def bitfield_to_list (bf):
rc = []
bitpos = 0
while bf > 0:
if bf & 0x1:
rc.append(bitpos)
bitpos += 1
bf = bf >> 1
return rc
def set_window_always_on_top (title):
# we need the GDK module, if not available - ignroe this command
try:
if sys.version_info < (3,0):
from gtk import gdk
else:
#from gi.repository import Gdk as gdk
return
except ImportError:
return
# search the window and set it as above
root = gdk.get_default_root_window()
for id in root.property_get('_NET_CLIENT_LIST')[2]:
w = gdk.window_foreign_new(id)
if w:
name = w.property_get('WM_NAME')[2]
if title in name:
w.set_keep_above(True)
gdk.window_process_all_updates()
break
def bitfield_to_str (bf):
lst = bitfield_to_list(bf)
return "-" if not lst else ', '.join([str(x) for x in lst])
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