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|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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#-*- coding: utf-8 -*-
# collections.py
# Define various kind of collections
#
# Copyright (C) 2016 Jakub Kadlcik
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties 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, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#
from __future__ import absolute_import
from functools import cmp_to_key
from psutil import NoSuchProcess
class Collection(list):
def replace_values(self, attribute, source_value, required_value):
for app in self:
if getattr(app, attribute) == source_value:
app.update({attribute: required_value})
def sorted(self, attribute):
def _sort(app1, app2):
value1 = _value(app1, attribute)
value2 = _value(app2, attribute)
# Make sure the None values are at the end
# This shouldn't happen anyway but sometimes if does,
# for some reason, see #151 or #156
if not value1:
return 1
if not value2:
return -1
# https://stackoverflow.com/a/13239857/3285282
if value1 < value2:
return -1
if value1 > value2:
return 1
return 0
def _value(app, attribute):
if callable(getattr(self[0], attribute)):
return getattr(app, attribute)()
return getattr(app, attribute)
return sorted(self, key=cmp_to_key(_sort))
class ApplicationsCollection(Collection):
def with_helpers(self):
applications = filter(lambda app: app.helper, self)
return ApplicationsCollection(applications)
def without_helpers(self):
applications = filter(lambda app: not app.helper, self)
return ApplicationsCollection(applications)
def exclude_types(self, app_types):
"""app_types -- see Applications.TYPES"""
applications = filter(lambda app: app.type not in app_types, self)
return ApplicationsCollection(applications)
def filter_types(self, app_types):
"""app_types -- see Applications.TYPES"""
applications = filter(lambda app: app.type in app_types, self)
return ApplicationsCollection(applications)
def count_type(self, app_type):
count = 0
for application in self:
if application.type == app_type:
count += 1
return count
def unique(self):
return ApplicationsCollection(set(self))
class ProcessesCollection(Collection):
def owned_by(self, user):
if not user:
return self
return self.filtered(lambda process: process.username() == user)
def newer_than(self, timestamp):
return self.filtered(lambda process: process.create_time() >= timestamp)
def unique(self):
unique = set()
for process in self:
try: unique.add(process)
except NoSuchProcess: pass
return ProcessesCollection(unique)
def filtered(self, function):
processes = ProcessesCollection()
for process in self:
try:
if function(process):
processes.append(process)
except NoSuchProcess: pass
return processes
class AffectedProcessesCollection(ProcessesCollection):
def update(self, iterable):
for x in iterable:
if x in self:
self[self.index(x)].update(x)
else:
self.append(x)
class PackagesCollection(Collection):
_package_manager = None
def __init__(self, *args):
list.__init__(self, *args)
def intersection(self, packages):
if packages is not None:
return PackagesCollection(set(packages).intersection(self))
return self
@property
def files(self):
files = []
for package in self:
files.extend(self._package_manager.package_files(package.name))
return set(files)
def unique_newest(self):
packages = {}
for p in self:
if p.name in packages:
if packages[p.name].modified > p.modified:
continue
packages[p.name] = p
return PackagesCollection(packages.values())