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# -*- coding: utf-8 -*-
#
# File: portato/helper.py
# This file is part of the Portato-Project, a graphical portage-frontend.
#
# Copyright (C) 2006-2007 René 'Necoro' Neumann
# This is free software. You may redistribute copies of it under the terms of
# the GNU General Public License version 2.
# There is NO WARRANTY, to the extent permitted by law.
#
# Written by René 'Necoro' Neumann <necoro@necoro.net> et.al.
"""
Some nice functions used in the program.
"""
import os, signal, logging
debug = logging.getLogger("portatoLogger").debug
info = logging.getLogger("portatoLogger").info
warning = logging.getLogger("portatoLogger").warning
error = logging.getLogger("portatoLogger").error
critical = logging.getLogger("portatoLogger").critical
def N_ (s):
return s
def set_log_level (lvl):
logging.getLogger("portatoLogger").setLevel(lvl)
def send_signal_to_group (sig):
"""Sends a signal to all processes of our process group (w/o ourselves).
@param sig: signal number to send
@type sig: int"""
def handler (sig, stack):
"""Ignores the signal exactly one time and then restores the default."""
signal.signal(sig, signal.SIG_DFL)
signal.signal(sig, handler)
pgid = os.getpgrp()
os.killpg(pgid, sig)
def am_i_root ():
"""Returns True if the current user is root, False otherwise.
@rtype: boolean"""
from plugin import hook
@hook("am_i_root")
def __am_i_root():
if os.getuid() == 0:
return True
else:
return False
return __am_i_root()
def flatten (listOfLists):
"""Flattens the given list of lists.
@param listOfLists: the list of lists to flatten
@type listOfLists: list of lists
@returns: flattend list
@rtype: list"""
if not isinstance(listOfLists, list):
return [listOfLists]
ret = []
for r in listOfLists:
ret.extend(flatten(r))
return ret
def unique_array(s):
"""Stolen from portage_utils:
lifted from python cookbook, credit: Tim Peters
Return a list of the elements in s in arbitrary order, sans duplicates"""
n = len(s)
# assume all elements are hashable, if so, it's linear
try:
return list(set(s))
except TypeError:
pass
# so much for linear. abuse sort.
try:
t = list(s)
t.sort()
except TypeError:
pass
else:
assert n > 0
last = t[0]
lasti = i = 1
while i < n:
if t[i] != last:
t[lasti] = last = t[i]
lasti += 1
i += 1
return t[:lasti]
# blah. back to original portage.unique_array
u = []
for x in s:
if x not in u:
u.append(x)
return u
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